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+Produced by Suzanne Lybarger, steve harris, Josephine
+Paolucci and the Online Distributed Proofreading Team at
+http://www.pgdp.net.
+
+
+
+
+
+
+OPTICKS:
+
+OR, A
+
+TREATISE
+
+OF THE
+
+_Reflections_, _Refractions_,
+_Inflections_ and _Colours_
+
+OF
+
+LIGHT.
+
+_The_ FOURTH EDITION, _corrected_.
+
+By Sir _ISAAC NEWTON_, Knt.
+
+LONDON:
+
+Printed for WILLIAM INNYS at the West-End of St. _Paul's_. MDCCXXX.
+
+TITLE PAGE OF THE 1730 EDITION
+
+
+
+
+SIR ISAAC NEWTON'S ADVERTISEMENTS
+
+
+
+
+Advertisement I
+
+
+_Part of the ensuing Discourse about Light was written at the Desire of
+some Gentlemen of the_ Royal-Society, _in the Year 1675, and then sent
+to their Secretary, and read at their Meetings, and the rest was added
+about twelve Years after to complete the Theory; except the third Book,
+and the last Proposition of the Second, which were since put together
+out of scatter'd Papers. To avoid being engaged in Disputes about these
+Matters, I have hitherto delayed the printing, and should still have
+delayed it, had not the Importunity of Friends prevailed upon me. If any
+other Papers writ on this Subject are got out of my Hands they are
+imperfect, and were perhaps written before I had tried all the
+Experiments here set down, and fully satisfied my self about the Laws of
+Refractions and Composition of Colours. I have here publish'd what I
+think proper to come abroad, wishing that it may not be translated into
+another Language without my Consent._
+
+_The Crowns of Colours, which sometimes appear about the Sun and Moon, I
+have endeavoured to give an Account of; but for want of sufficient
+Observations leave that Matter to be farther examined. The Subject of
+the Third Book I have also left imperfect, not having tried all the
+Experiments which I intended when I was about these Matters, nor
+repeated some of those which I did try, until I had satisfied my self
+about all their Circumstances. To communicate what I have tried, and
+leave the rest to others for farther Enquiry, is all my Design in
+publishing these Papers._
+
+_In a Letter written to Mr._ Leibnitz _in the year 1679, and published
+by Dr._ Wallis, _I mention'd a Method by which I had found some general
+Theorems about squaring Curvilinear Figures, or comparing them with the
+Conic Sections, or other the simplest Figures with which they may be
+compared. And some Years ago I lent out a Manuscript containing such
+Theorems, and having since met with some Things copied out of it, I have
+on this Occasion made it publick, prefixing to it an_ Introduction, _and
+subjoining a_ Scholium _concerning that Method. And I have joined with
+it another small Tract concerning the Curvilinear Figures of the Second
+Kind, which was also written many Years ago, and made known to some
+Friends, who have solicited the making it publick._
+
+                                        _I. N._
+
+April 1, 1704.
+
+
+Advertisement II
+
+_In this Second Edition of these Opticks I have omitted the Mathematical
+Tracts publish'd at the End of the former Edition, as not belonging to
+the Subject. And at the End of the Third Book I have added some
+Questions. And to shew that I do not take Gravity for an essential
+Property of Bodies, I have added one Question concerning its Cause,
+chusing to propose it by way of a Question, because I am not yet
+satisfied about it for want of Experiments._
+
+                                        _I. N._
+
+July 16, 1717.
+
+
+Advertisement to this Fourth Edition
+
+_This new Edition of Sir_ Isaac Newton's Opticks _is carefully printed
+from the Third Edition, as it was corrected by the Author's own Hand,
+and left before his Death with the Bookseller. Since Sir_ Isaac's
+Lectiones Opticæ, _which he publickly read in the University of_
+Cambridge _in the Years 1669, 1670, and 1671, are lately printed, it has
+been thought proper to make at the bottom of the Pages several Citations
+from thence, where may be found the Demonstrations, which the Author
+omitted in these_ Opticks.
+
+       *       *       *       *       *
+
+Transcriber's Note: There are several greek letters used in the
+descriptions of the illustrations. They are signified by [Greek:
+letter]. Square roots are noted by the letters sqrt before the equation.
+
+       *       *       *       *       *
+
+THE FIRST BOOK OF OPTICKS
+
+
+
+
+_PART I._
+
+
+My Design in this Book is not to explain the Properties of Light by
+Hypotheses, but to propose and prove them by Reason and Experiments: In
+order to which I shall premise the following Definitions and Axioms.
+
+
+
+
+_DEFINITIONS_
+
+
+DEFIN. I.
+
+_By the Rays of Light I understand its least Parts, and those as well
+Successive in the same Lines, as Contemporary in several Lines._ For it
+is manifest that Light consists of Parts, both Successive and
+Contemporary; because in the same place you may stop that which comes
+one moment, and let pass that which comes presently after; and in the
+same time you may stop it in any one place, and let it pass in any
+other. For that part of Light which is stopp'd cannot be the same with
+that which is let pass. The least Light or part of Light, which may be
+stopp'd alone without the rest of the Light, or propagated alone, or do
+or suffer any thing alone, which the rest of the Light doth not or
+suffers not, I call a Ray of Light.
+
+
+DEFIN. II.
+
+_Refrangibility of the Rays of Light, is their Disposition to be
+refracted or turned out of their Way in passing out of one transparent
+Body or Medium into another. And a greater or less Refrangibility of
+Rays, is their Disposition to be turned more or less out of their Way in
+like Incidences on the same Medium._ Mathematicians usually consider the
+Rays of Light to be Lines reaching from the luminous Body to the Body
+illuminated, and the refraction of those Rays to be the bending or
+breaking of those lines in their passing out of one Medium into another.
+And thus may Rays and Refractions be considered, if Light be propagated
+in an instant. But by an Argument taken from the Æquations of the times
+of the Eclipses of _Jupiter's Satellites_, it seems that Light is
+propagated in time, spending in its passage from the Sun to us about
+seven Minutes of time: And therefore I have chosen to define Rays and
+Refractions in such general terms as may agree to Light in both cases.
+
+
+DEFIN. III.
+
+_Reflexibility of Rays, is their Disposition to be reflected or turned
+back into the same Medium from any other Medium upon whose Surface they
+fall. And Rays are more or less reflexible, which are turned back more
+or less easily._ As if Light pass out of a Glass into Air, and by being
+inclined more and more to the common Surface of the Glass and Air,
+begins at length to be totally reflected by that Surface; those sorts of
+Rays which at like Incidences are reflected most copiously, or by
+inclining the Rays begin soonest to be totally reflected, are most
+reflexible.
+
+
+DEFIN. IV.
+
+_The Angle of Incidence is that Angle, which the Line described by the
+incident Ray contains with the Perpendicular to the reflecting or
+refracting Surface at the Point of Incidence._
+
+
+DEFIN. V.
+
+_The Angle of Reflexion or Refraction, is the Angle which the line
+described by the reflected or refracted Ray containeth with the
+Perpendicular to the reflecting or refracting Surface at the Point of
+Incidence._
+
+
+DEFIN. VI.
+
+_The Sines of Incidence, Reflexion, and Refraction, are the Sines of the
+Angles of Incidence, Reflexion, and Refraction._
+
+
+DEFIN. VII
+
+_The Light whose Rays are all alike Refrangible, I call Simple,
+Homogeneal and Similar; and that whose Rays are some more Refrangible
+than others, I call Compound, Heterogeneal and Dissimilar._ The former
+Light I call Homogeneal, not because I would affirm it so in all
+respects, but because the Rays which agree in Refrangibility, agree at
+least in all those their other Properties which I consider in the
+following Discourse.
+
+
+DEFIN. VIII.
+
+_The Colours of Homogeneal Lights, I call Primary, Homogeneal and
+Simple; and those of Heterogeneal Lights, Heterogeneal and Compound._
+For these are always compounded of the colours of Homogeneal Lights; as
+will appear in the following Discourse.
+
+
+
+
+_AXIOMS._
+
+
+AX. I.
+
+_The Angles of Reflexion and Refraction, lie in one and the same Plane
+with the Angle of Incidence._
+
+
+AX. II.
+
+_The Angle of Reflexion is equal to the Angle of Incidence._
+
+
+AX. III.
+
+_If the refracted Ray be returned directly back to the Point of
+Incidence, it shall be refracted into the Line before described by the
+incident Ray._
+
+
+AX. IV.
+
+_Refraction out of the rarer Medium into the denser, is made towards the
+Perpendicular; that is, so that the Angle of Refraction be less than the
+Angle of Incidence._
+
+
+AX. V.
+
+_The Sine of Incidence is either accurately or very nearly in a given
+Ratio to the Sine of Refraction._
+
+Whence if that Proportion be known in any one Inclination of the
+incident Ray, 'tis known in all the Inclinations, and thereby the
+Refraction in all cases of Incidence on the same refracting Body may be
+determined. Thus if the Refraction be made out of Air into Water, the
+Sine of Incidence of the red Light is to the Sine of its Refraction as 4
+to 3. If out of Air into Glass, the Sines are as 17 to 11. In Light of
+other Colours the Sines have other Proportions: but the difference is so
+little that it need seldom be considered.
+
+[Illustration: FIG. 1]
+
+Suppose therefore, that RS [in _Fig._ 1.] represents the Surface of
+stagnating Water, and that C is the point of Incidence in which any Ray
+coming in the Air from A in the Line AC is reflected or refracted, and I
+would know whither this Ray shall go after Reflexion or Refraction: I
+erect upon the Surface of the Water from the point of Incidence the
+Perpendicular CP and produce it downwards to Q, and conclude by the
+first Axiom, that the Ray after Reflexion and Refraction, shall be
+found somewhere in the Plane of the Angle of Incidence ACP produced. I
+let fall therefore upon the Perpendicular CP the Sine of Incidence AD;
+and if the reflected Ray be desired, I produce AD to B so that DB be
+equal to AD, and draw CB. For this Line CB shall be the reflected Ray;
+the Angle of Reflexion BCP and its Sine BD being equal to the Angle and
+Sine of Incidence, as they ought to be by the second Axiom, But if the
+refracted Ray be desired, I produce AD to H, so that DH may be to AD as
+the Sine of Refraction to the Sine of Incidence, that is, (if the Light
+be red) as 3 to 4; and about the Center C and in the Plane ACP with the
+Radius CA describing a Circle ABE, I draw a parallel to the
+Perpendicular CPQ, the Line HE cutting the Circumference in E, and
+joining CE, this Line CE shall be the Line of the refracted Ray. For if
+EF be let fall perpendicularly on the Line PQ, this Line EF shall be the
+Sine of Refraction of the Ray CE, the Angle of Refraction being ECQ; and
+this Sine EF is equal to DH, and consequently in Proportion to the Sine
+of Incidence AD as 3 to 4.
+
+In like manner, if there be a Prism of Glass (that is, a Glass bounded
+with two Equal and Parallel Triangular ends, and three plain and well
+polished Sides, which meet in three Parallel Lines running from the
+three Angles of one end to the three Angles of the other end) and if the
+Refraction of the Light in passing cross this Prism be desired: Let ACB
+[in _Fig._ 2.] represent a Plane cutting this Prism transversly to its
+three Parallel lines or edges there where the Light passeth through it,
+and let DE be the Ray incident upon the first side of the Prism AC where
+the Light goes into the Glass; and by putting the Proportion of the Sine
+of Incidence to the Sine of Refraction as 17 to 11 find EF the first
+refracted Ray. Then taking this Ray for the Incident Ray upon the second
+side of the Glass BC where the Light goes out, find the next refracted
+Ray FG by putting the Proportion of the Sine of Incidence to the Sine of
+Refraction as 11 to 17. For if the Sine of Incidence out of Air into
+Glass be to the Sine of Refraction as 17 to 11, the Sine of Incidence
+out of Glass into Air must on the contrary be to the Sine of Refraction
+as 11 to 17, by the third Axiom.
+
+[Illustration: FIG. 2.]
+
+Much after the same manner, if ACBD [in _Fig._ 3.] represent a Glass
+spherically convex on both sides (usually called a _Lens_, such as is a
+Burning-glass, or Spectacle-glass, or an Object-glass of a Telescope)
+and it be required to know how Light falling upon it from any lucid
+point Q shall be refracted, let QM represent a Ray falling upon any
+point M of its first spherical Surface ACB, and by erecting a
+Perpendicular to the Glass at the point M, find the first refracted Ray
+MN by the Proportion of the Sines 17 to 11. Let that Ray in going out of
+the Glass be incident upon N, and then find the second refracted Ray
+N_q_ by the Proportion of the Sines 11 to 17. And after the same manner
+may the Refraction be found when the Lens is convex on one side and
+plane or concave on the other, or concave on both sides.
+
+[Illustration: FIG. 3.]
+
+
+AX. VI.
+
+_Homogeneal Rays which flow from several Points of any Object, and fall
+perpendicularly or almost perpendicularly on any reflecting or
+refracting Plane or spherical Surface, shall afterwards diverge from so
+many other Points, or be parallel to so many other Lines, or converge to
+so many other Points, either accurately or without any sensible Error.
+And the same thing will happen, if the Rays be reflected or refracted
+successively by two or three or more Plane or Spherical Surfaces._
+
+The Point from which Rays diverge or to which they converge may be
+called their _Focus_. And the Focus of the incident Rays being given,
+that of the reflected or refracted ones may be found by finding the
+Refraction of any two Rays, as above; or more readily thus.
+
+_Cas._ 1. Let ACB [in _Fig._ 4.] be a reflecting or refracting Plane,
+and Q the Focus of the incident Rays, and Q_q_C a Perpendicular to that
+Plane. And if this Perpendicular be produced to _q_, so that _q_C be
+equal to QC, the Point _q_ shall be the Focus of the reflected Rays: Or
+if _q_C be taken on the same side of the Plane with QC, and in
+proportion to QC as the Sine of Incidence to the Sine of Refraction, the
+Point _q_ shall be the Focus of the refracted Rays.
+
+[Illustration: FIG. 4.]
+
+_Cas._ 2. Let ACB [in _Fig._ 5.] be the reflecting Surface of any Sphere
+whose Centre is E. Bisect any Radius thereof, (suppose EC) in T, and if
+in that Radius on the same side the Point T you take the Points Q and
+_q_, so that TQ, TE, and T_q_, be continual Proportionals, and the Point
+Q be the Focus of the incident Rays, the Point _q_ shall be the Focus of
+the reflected ones.
+
+[Illustration: FIG. 5.]
+
+_Cas._ 3. Let ACB [in _Fig._ 6.] be the refracting Surface of any Sphere
+whose Centre is E. In any Radius thereof EC produced both ways take ET
+and C_t_ equal to one another and severally in such Proportion to that
+Radius as the lesser of the Sines of Incidence and Refraction hath to
+the difference of those Sines. And then if in the same Line you find any
+two Points Q and _q_, so that TQ be to ET as E_t_ to _tq_, taking _tq_
+the contrary way from _t_ which TQ lieth from T, and if the Point Q be
+the Focus of any incident Rays, the Point _q_ shall be the Focus of the
+refracted ones.
+
+[Illustration: FIG. 6.]
+
+And by the same means the Focus of the Rays after two or more Reflexions
+or Refractions may be found.
+
+[Illustration: FIG. 7.]
+
+_Cas._ 4. Let ACBD [in _Fig._ 7.] be any refracting Lens, spherically
+Convex or Concave or Plane on either side, and let CD be its Axis (that
+is, the Line which cuts both its Surfaces perpendicularly, and passes
+through the Centres of the Spheres,) and in this Axis produced let F and
+_f_ be the Foci of the refracted Rays found as above, when the incident
+Rays on both sides the Lens are parallel to the same Axis; and upon the
+Diameter F_f_ bisected in E, describe a Circle. Suppose now that any
+Point Q be the Focus of any incident Rays. Draw QE cutting the said
+Circle in T and _t_, and therein take _tq_ in such proportion to _t_E as
+_t_E or TE hath to TQ. Let _tq_ lie the contrary way from _t_ which TQ
+doth from T, and _q_ shall be the Focus of the refracted Rays without
+any sensible Error, provided the Point Q be not so remote from the Axis,
+nor the Lens so broad as to make any of the Rays fall too obliquely on
+the refracting Surfaces.[A]
+
+And by the like Operations may the reflecting or refracting Surfaces be
+found when the two Foci are given, and thereby a Lens be formed, which
+shall make the Rays flow towards or from what Place you please.[B]
+
+So then the Meaning of this Axiom is, that if Rays fall upon any Plane
+or Spherical Surface or Lens, and before their Incidence flow from or
+towards any Point Q, they shall after Reflexion or Refraction flow from
+or towards the Point _q_ found by the foregoing Rules. And if the
+incident Rays flow from or towards several points Q, the reflected or
+refracted Rays shall flow from or towards so many other Points _q_
+found by the same Rules. Whether the reflected and refracted Rays flow
+from or towards the Point _q_ is easily known by the situation of that
+Point. For if that Point be on the same side of the reflecting or
+refracting Surface or Lens with the Point Q, and the incident Rays flow
+from the Point Q, the reflected flow towards the Point _q_ and the
+refracted from it; and if the incident Rays flow towards Q, the
+reflected flow from _q_, and the refracted towards it. And the contrary
+happens when _q_ is on the other side of the Surface.
+
+
+AX. VII.
+
+_Wherever the Rays which come from all the Points of any Object meet
+again in so many Points after they have been made to converge by
+Reflection or Refraction, there they will make a Picture of the Object
+upon any white Body on which they fall._
+
+So if PR [in _Fig._ 3.] represent any Object without Doors, and AB be a
+Lens placed at a hole in the Window-shut of a dark Chamber, whereby the
+Rays that come from any Point Q of that Object are made to converge and
+meet again in the Point _q_; and if a Sheet of white Paper be held at
+_q_ for the Light there to fall upon it, the Picture of that Object PR
+will appear upon the Paper in its proper shape and Colours. For as the
+Light which comes from the Point Q goes to the Point _q_, so the Light
+which comes from other Points P and R of the Object, will go to so many
+other correspondent Points _p_ and _r_ (as is manifest by the sixth
+Axiom;) so that every Point of the Object shall illuminate a
+correspondent Point of the Picture, and thereby make a Picture like the
+Object in Shape and Colour, this only excepted, that the Picture shall
+be inverted. And this is the Reason of that vulgar Experiment of casting
+the Species of Objects from abroad upon a Wall or Sheet of white Paper
+in a dark Room.
+
+In like manner, when a Man views any Object PQR, [in _Fig._ 8.] the
+Light which comes from the several Points of the Object is so refracted
+by the transparent skins and humours of the Eye, (that is, by the
+outward coat EFG, called the _Tunica Cornea_, and by the crystalline
+humour AB which is beyond the Pupil _mk_) as to converge and meet again
+in so many Points in the bottom of the Eye, and there to paint the
+Picture of the Object upon that skin (called the _Tunica Retina_) with
+which the bottom of the Eye is covered. For Anatomists, when they have
+taken off from the bottom of the Eye that outward and most thick Coat
+called the _Dura Mater_, can then see through the thinner Coats, the
+Pictures of Objects lively painted thereon. And these Pictures,
+propagated by Motion along the Fibres of the Optick Nerves into the
+Brain, are the cause of Vision. For accordingly as these Pictures are
+perfect or imperfect, the Object is seen perfectly or imperfectly. If
+the Eye be tinged with any colour (as in the Disease of the _Jaundice_)
+so as to tinge the Pictures in the bottom of the Eye with that Colour,
+then all Objects appear tinged with the same Colour. If the Humours of
+the Eye by old Age decay, so as by shrinking to make the _Cornea_ and
+Coat of the _Crystalline Humour_ grow flatter than before, the Light
+will not be refracted enough, and for want of a sufficient Refraction
+will not converge to the bottom of the Eye but to some place beyond it,
+and by consequence paint in the bottom of the Eye a confused Picture,
+and according to the Indistinctness of this Picture the Object will
+appear confused. This is the reason of the decay of sight in old Men,
+and shews why their Sight is mended by Spectacles. For those Convex
+glasses supply the defect of plumpness in the Eye, and by increasing the
+Refraction make the Rays converge sooner, so as to convene distinctly at
+the bottom of the Eye if the Glass have a due degree of convexity. And
+the contrary happens in short-sighted Men whose Eyes are too plump. For
+the Refraction being now too great, the Rays converge and convene in the
+Eyes before they come at the bottom; and therefore the Picture made in
+the bottom and the Vision caused thereby will not be distinct, unless
+the Object be brought so near the Eye as that the place where the
+converging Rays convene may be removed to the bottom, or that the
+plumpness of the Eye be taken off and the Refractions diminished by a
+Concave-glass of a due degree of Concavity, or lastly that by Age the
+Eye grow flatter till it come to a due Figure: For short-sighted Men see
+remote Objects best in Old Age, and therefore they are accounted to have
+the most lasting Eyes.
+
+[Illustration: FIG. 8.]
+
+
+AX. VIII.
+
+_An Object seen by Reflexion or Refraction, appears in that place from
+whence the Rays after their last Reflexion or Refraction diverge in
+falling on the Spectator's Eye._
+
+[Illustration: FIG. 9.]
+
+If the Object A [in FIG. 9.] be seen by Reflexion of a Looking-glass
+_mn_, it shall appear, not in its proper place A, but behind the Glass
+at _a_, from whence any Rays AB, AC, AD, which flow from one and the
+same Point of the Object, do after their Reflexion made in the Points B,
+C, D, diverge in going from the Glass to E, F, G, where they are
+incident on the Spectator's Eyes. For these Rays do make the same
+Picture in the bottom of the Eyes as if they had come from the Object
+really placed at _a_ without the Interposition of the Looking-glass; and
+all Vision is made according to the place and shape of that Picture.
+
+In like manner the Object D [in FIG. 2.] seen through a Prism, appears
+not in its proper place D, but is thence translated to some other place
+_d_ situated in the last refracted Ray FG drawn backward from F to _d_.
+
+[Illustration: FIG. 10.]
+
+And so the Object Q [in FIG. 10.] seen through the Lens AB, appears at
+the place _q_ from whence the Rays diverge in passing from the Lens to
+the Eye. Now it is to be noted, that the Image of the Object at _q_ is
+so much bigger or lesser than the Object it self at Q, as the distance
+of the Image at _q_ from the Lens AB is bigger or less than the distance
+of the Object at Q from the same Lens. And if the Object be seen through
+two or more such Convex or Concave-glasses, every Glass shall make a new
+Image, and the Object shall appear in the place of the bigness of the
+last Image. Which consideration unfolds the Theory of Microscopes and
+Telescopes. For that Theory consists in almost nothing else than the
+describing such Glasses as shall make the last Image of any Object as
+distinct and large and luminous as it can conveniently be made.
+
+I have now given in Axioms and their Explications the sum of what hath
+hitherto been treated of in Opticks. For what hath been generally
+agreed on I content my self to assume under the notion of Principles, in
+order to what I have farther to write. And this may suffice for an
+Introduction to Readers of quick Wit and good Understanding not yet
+versed in Opticks: Although those who are already acquainted with this
+Science, and have handled Glasses, will more readily apprehend what
+followeth.
+
+FOOTNOTES:
+
+[A] In our Author's _Lectiones Opticæ_, Part I. Sect. IV. Prop 29, 30,
+there is an elegant Method of determining these _Foci_; not only in
+spherical Surfaces, but likewise in any other curved Figure whatever:
+And in Prop. 32, 33, the same thing is done for any Ray lying out of the
+Axis.
+
+[B] _Ibid._ Prop. 34.
+
+
+
+
+_PROPOSITIONS._
+
+
+
+_PROP._ I. THEOR. I.
+
+_Lights which differ in Colour, differ also in Degrees of
+Refrangibility._
+
+The PROOF by Experiments.
+
+_Exper._ 1.
+
+I took a black oblong stiff Paper terminated by Parallel Sides, and with
+a Perpendicular right Line drawn cross from one Side to the other,
+distinguished it into two equal Parts. One of these parts I painted with
+a red colour and the other with a blue. The Paper was very black, and
+the Colours intense and thickly laid on, that the Phænomenon might be
+more conspicuous. This Paper I view'd through a Prism of solid Glass,
+whose two Sides through which the Light passed to the Eye were plane and
+well polished, and contained an Angle of about sixty degrees; which
+Angle I call the refracting Angle of the Prism. And whilst I view'd it,
+I held it and the Prism before a Window in such manner that the Sides of
+the Paper were parallel to the Prism, and both those Sides and the Prism
+were parallel to the Horizon, and the cross Line was also parallel to
+it: and that the Light which fell from the Window upon the Paper made an
+Angle with the Paper, equal to that Angle which was made with the same
+Paper by the Light reflected from it to the Eye. Beyond the Prism was
+the Wall of the Chamber under the Window covered over with black Cloth,
+and the Cloth was involved in Darkness that no Light might be reflected
+from thence, which in passing by the Edges of the Paper to the Eye,
+might mingle itself with the Light of the Paper, and obscure the
+Phænomenon thereof. These things being thus ordered, I found that if the
+refracting Angle of the Prism be turned upwards, so that the Paper may
+seem to be lifted upwards by the Refraction, its blue half will be
+lifted higher by the Refraction than its red half. But if the refracting
+Angle of the Prism be turned downward, so that the Paper may seem to be
+carried lower by the Refraction, its blue half will be carried something
+lower thereby than its red half. Wherefore in both Cases the Light which
+comes from the blue half of the Paper through the Prism to the Eye, does
+in like Circumstances suffer a greater Refraction than the Light which
+comes from the red half, and by consequence is more refrangible.
+
+_Illustration._ In the eleventh Figure, MN represents the Window, and DE
+the Paper terminated with parallel Sides DJ and HE, and by the
+transverse Line FG distinguished into two halfs, the one DG of an
+intensely blue Colour, the other FE of an intensely red. And BAC_cab_
+represents the Prism whose refracting Planes AB_ba_ and AC_ca_ meet in
+the Edge of the refracting Angle A_a_. This Edge A_a_ being upward, is
+parallel both to the Horizon, and to the Parallel-Edges of the Paper DJ
+and HE, and the transverse Line FG is perpendicular to the Plane of the
+Window. And _de_ represents the Image of the Paper seen by Refraction
+upwards in such manner, that the blue half DG is carried higher to _dg_
+than the red half FE is to _fe_, and therefore suffers a greater
+Refraction. If the Edge of the refracting Angle be turned downward, the
+Image of the Paper will be refracted downward; suppose to [Greek: de],
+and the blue half will be refracted lower to [Greek: dg] than the red
+half is to [Greek: pe].
+
+[Illustration: FIG. 11.]
+
+_Exper._ 2. About the aforesaid Paper, whose two halfs were painted over
+with red and blue, and which was stiff like thin Pasteboard, I lapped
+several times a slender Thred of very black Silk, in such manner that
+the several parts of the Thred might appear upon the Colours like so
+many black Lines drawn over them, or like long and slender dark Shadows
+cast upon them. I might have drawn black Lines with a Pen, but the
+Threds were smaller and better defined. This Paper thus coloured and
+lined I set against a Wall perpendicularly to the Horizon, so that one
+of the Colours might stand to the Right Hand, and the other to the Left.
+Close before the Paper, at the Confine of the Colours below, I placed a
+Candle to illuminate the Paper strongly: For the Experiment was tried in
+the Night. The Flame of the Candle reached up to the lower edge of the
+Paper, or a very little higher. Then at the distance of six Feet, and
+one or two Inches from the Paper upon the Floor I erected a Glass Lens
+four Inches and a quarter broad, which might collect the Rays coming
+from the several Points of the Paper, and make them converge towards so
+many other Points at the same distance of six Feet, and one or two
+Inches on the other side of the Lens, and so form the Image of the
+coloured Paper upon a white Paper placed there, after the same manner
+that a Lens at a Hole in a Window casts the Images of Objects abroad
+upon a Sheet of white Paper in a dark Room. The aforesaid white Paper,
+erected perpendicular to the Horizon, and to the Rays which fell upon it
+from the Lens, I moved sometimes towards the Lens, sometimes from it, to
+find the Places where the Images of the blue and red Parts of the
+coloured Paper appeared most distinct. Those Places I easily knew by the
+Images of the black Lines which I had made by winding the Silk about the
+Paper. For the Images of those fine and slender Lines (which by reason
+of their Blackness were like Shadows on the Colours) were confused and
+scarce visible, unless when the Colours on either side of each Line were
+terminated most distinctly, Noting therefore, as diligently as I could,
+the Places where the Images of the red and blue halfs of the coloured
+Paper appeared most distinct, I found that where the red half of the
+Paper appeared distinct, the blue half appeared confused, so that the
+black Lines drawn upon it could scarce be seen; and on the contrary,
+where the blue half appeared most distinct, the red half appeared
+confused, so that the black Lines upon it were scarce visible. And
+between the two Places where these Images appeared distinct there was
+the distance of an Inch and a half; the distance of the white Paper from
+the Lens, when the Image of the red half of the coloured Paper appeared
+most distinct, being greater by an Inch and an half than the distance of
+the same white Paper from the Lens, when the Image of the blue half
+appeared most distinct. In like Incidences therefore of the blue and red
+upon the Lens, the blue was refracted more by the Lens than the red, so
+as to converge sooner by an Inch and a half, and therefore is more
+refrangible.
+
+_Illustration._ In the twelfth Figure (p. 27), DE signifies the coloured
+Paper, DG the blue half, FE the red half, MN the Lens, HJ the white
+Paper in that Place where the red half with its black Lines appeared
+distinct, and _hi_ the same Paper in that Place where the blue half
+appeared distinct. The Place _hi_ was nearer to the Lens MN than the
+Place HJ by an Inch and an half.
+
+_Scholium._ The same Things succeed, notwithstanding that some of the
+Circumstances be varied; as in the first Experiment when the Prism and
+Paper are any ways inclined to the Horizon, and in both when coloured
+Lines are drawn upon very black Paper. But in the Description of these
+Experiments, I have set down such Circumstances, by which either the
+Phænomenon might be render'd more conspicuous, or a Novice might more
+easily try them, or by which I did try them only. The same Thing, I have
+often done in the following Experiments: Concerning all which, this one
+Admonition may suffice. Now from these Experiments it follows not, that
+all the Light of the blue is more refrangible than all the Light of the
+red: For both Lights are mixed of Rays differently refrangible, so that
+in the red there are some Rays not less refrangible than those of the
+blue, and in the blue there are some Rays not more refrangible than
+those of the red: But these Rays, in proportion to the whole Light, are
+but few, and serve to diminish the Event of the Experiment, but are not
+able to destroy it. For, if the red and blue Colours were more dilute
+and weak, the distance of the Images would be less than an Inch and a
+half; and if they were more intense and full, that distance would be
+greater, as will appear hereafter. These Experiments may suffice for the
+Colours of Natural Bodies. For in the Colours made by the Refraction of
+Prisms, this Proposition will appear by the Experiments which are now to
+follow in the next Proposition.
+
+
+_PROP._ II. THEOR. II.
+
+_The Light of the Sun consists of Rays differently Refrangible._
+
+The PROOF by Experiments.
+
+[Illustration: FIG. 12.]
+
+[Illustration: FIG. 13.]
+
+_Exper._ 3.
+
+In a very dark Chamber, at a round Hole, about one third Part of an Inch
+broad, made in the Shut of a Window, I placed a Glass Prism, whereby the
+Beam of the Sun's Light, which came in at that Hole, might be refracted
+upwards toward the opposite Wall of the Chamber, and there form a
+colour'd Image of the Sun. The Axis of the Prism (that is, the Line
+passing through the middle of the Prism from one end of it to the other
+end parallel to the edge of the Refracting Angle) was in this and the
+following Experiments perpendicular to the incident Rays. About this
+Axis I turned the Prism slowly, and saw the refracted Light on the Wall,
+or coloured Image of the Sun, first to descend, and then to ascend.
+Between the Descent and Ascent, when the Image seemed Stationary, I
+stopp'd the Prism, and fix'd it in that Posture, that it should be moved
+no more. For in that Posture the Refractions of the Light at the two
+Sides of the refracting Angle, that is, at the Entrance of the Rays into
+the Prism, and at their going out of it, were equal to one another.[C]
+So also in other Experiments, as often as I would have the Refractions
+on both sides the Prism to be equal to one another, I noted the Place
+where the Image of the Sun formed by the refracted Light stood still
+between its two contrary Motions, in the common Period of its Progress
+and Regress; and when the Image fell upon that Place, I made fast the
+Prism. And in this Posture, as the most convenient, it is to be
+understood that all the Prisms are placed in the following Experiments,
+unless where some other Posture is described. The Prism therefore being
+placed in this Posture, I let the refracted Light fall perpendicularly
+upon a Sheet of white Paper at the opposite Wall of the Chamber, and
+observed the Figure and Dimensions of the Solar Image formed on the
+Paper by that Light. This Image was Oblong and not Oval, but terminated
+with two Rectilinear and Parallel Sides, and two Semicircular Ends. On
+its Sides it was bounded pretty distinctly, but on its Ends very
+confusedly and indistinctly, the Light there decaying and vanishing by
+degrees. The Breadth of this Image answered to the Sun's Diameter, and
+was about two Inches and the eighth Part of an Inch, including the
+Penumbra. For the Image was eighteen Feet and an half distant from the
+Prism, and at this distance that Breadth, if diminished by the Diameter
+of the Hole in the Window-shut, that is by a quarter of an Inch,
+subtended an Angle at the Prism of about half a Degree, which is the
+Sun's apparent Diameter. But the Length of the Image was about ten
+Inches and a quarter, and the Length of the Rectilinear Sides about
+eight Inches; and the refracting Angle of the Prism, whereby so great a
+Length was made, was 64 degrees. With a less Angle the Length of the
+Image was less, the Breadth remaining the same. If the Prism was turned
+about its Axis that way which made the Rays emerge more obliquely out of
+the second refracting Surface of the Prism, the Image soon became an
+Inch or two longer, or more; and if the Prism was turned about the
+contrary way, so as to make the Rays fall more obliquely on the first
+refracting Surface, the Image soon became an Inch or two shorter. And
+therefore in trying this Experiment, I was as curious as I could be in
+placing the Prism by the above-mention'd Rule exactly in such a Posture,
+that the Refractions of the Rays at their Emergence out of the Prism
+might be equal to that at their Incidence on it. This Prism had some
+Veins running along within the Glass from one end to the other, which
+scattered some of the Sun's Light irregularly, but had no sensible
+Effect in increasing the Length of the coloured Spectrum. For I tried
+the same Experiment with other Prisms with the same Success. And
+particularly with a Prism which seemed free from such Veins, and whose
+refracting Angle was 62-1/2 Degrees, I found the Length of the Image
+9-3/4 or 10 Inches at the distance of 18-1/2 Feet from the Prism, the
+Breadth of the Hole in the Window-shut being 1/4 of an Inch, as before.
+And because it is easy to commit a Mistake in placing the Prism in its
+due Posture, I repeated the Experiment four or five Times, and always
+found the Length of the Image that which is set down above. With another
+Prism of clearer Glass and better Polish, which seemed free from Veins,
+and whose refracting Angle was 63-1/2 Degrees, the Length of this Image
+at the same distance of 18-1/2 Feet was also about 10 Inches, or 10-1/8.
+Beyond these Measures for about a 1/4 or 1/3 of an Inch at either end of
+the Spectrum the Light of the Clouds seemed to be a little tinged with
+red and violet, but so very faintly, that I suspected that Tincture
+might either wholly, or in great Measure arise from some Rays of the
+Spectrum scattered irregularly by some Inequalities in the Substance and
+Polish of the Glass, and therefore I did not include it in these
+Measures. Now the different Magnitude of the hole in the Window-shut,
+and different thickness of the Prism where the Rays passed through it,
+and different inclinations of the Prism to the Horizon, made no sensible
+changes in the length of the Image. Neither did the different matter of
+the Prisms make any: for in a Vessel made of polished Plates of Glass
+cemented together in the shape of a Prism and filled with Water, there
+is the like Success of the Experiment according to the quantity of the
+Refraction. It is farther to be observed, that the Rays went on in right
+Lines from the Prism to the Image, and therefore at their very going out
+of the Prism had all that Inclination to one another from which the
+length of the Image proceeded, that is, the Inclination of more than two
+degrees and an half. And yet according to the Laws of Opticks vulgarly
+received, they could not possibly be so much inclined to one another.[D]
+For let EG [_Fig._ 13. (p. 27)] represent the Window-shut, F the hole
+made therein through which a beam of the Sun's Light was transmitted
+into the darkened Chamber, and ABC a Triangular Imaginary Plane whereby
+the Prism is feigned to be cut transversely through the middle of the
+Light. Or if you please, let ABC represent the Prism it self, looking
+directly towards the Spectator's Eye with its nearer end: And let XY be
+the Sun, MN the Paper upon which the Solar Image or Spectrum is cast,
+and PT the Image it self whose sides towards _v_ and _w_ are Rectilinear
+and Parallel, and ends towards P and T Semicircular. YKHP and XLJT are
+two Rays, the first of which comes from the lower part of the Sun to the
+higher part of the Image, and is refracted in the Prism at K and H, and
+the latter comes from the higher part of the Sun to the lower part of
+the Image, and is refracted at L and J. Since the Refractions on both
+sides the Prism are equal to one another, that is, the Refraction at K
+equal to the Refraction at J, and the Refraction at L equal to the
+Refraction at H, so that the Refractions of the incident Rays at K and L
+taken together, are equal to the Refractions of the emergent Rays at H
+and J taken together: it follows by adding equal things to equal things,
+that the Refractions at K and H taken together, are equal to the
+Refractions at J and L taken together, and therefore the two Rays being
+equally refracted, have the same Inclination to one another after
+Refraction which they had before; that is, the Inclination of half a
+Degree answering to the Sun's Diameter. For so great was the inclination
+of the Rays to one another before Refraction. So then, the length of the
+Image PT would by the Rules of Vulgar Opticks subtend an Angle of half a
+Degree at the Prism, and by Consequence be equal to the breadth _vw_;
+and therefore the Image would be round. Thus it would be were the two
+Rays XLJT and YKHP, and all the rest which form the Image P_w_T_v_,
+alike refrangible. And therefore seeing by Experience it is found that
+the Image is not round, but about five times longer than broad, the Rays
+which going to the upper end P of the Image suffer the greatest
+Refraction, must be more refrangible than those which go to the lower
+end T, unless the Inequality of Refraction be casual.
+
+This Image or Spectrum PT was coloured, being red at its least refracted
+end T, and violet at its most refracted end P, and yellow green and
+blue in the intermediate Spaces. Which agrees with the first
+Proposition, that Lights which differ in Colour, do also differ in
+Refrangibility. The length of the Image in the foregoing Experiments, I
+measured from the faintest and outmost red at one end, to the faintest
+and outmost blue at the other end, excepting only a little Penumbra,
+whose breadth scarce exceeded a quarter of an Inch, as was said above.
+
+_Exper._ 4. In the Sun's Beam which was propagated into the Room through
+the hole in the Window-shut, at the distance of some Feet from the hole,
+I held the Prism in such a Posture, that its Axis might be perpendicular
+to that Beam. Then I looked through the Prism upon the hole, and turning
+the Prism to and fro about its Axis, to make the Image of the Hole
+ascend and descend, when between its two contrary Motions it seemed
+Stationary, I stopp'd the Prism, that the Refractions of both sides of
+the refracting Angle might be equal to each other, as in the former
+Experiment. In this situation of the Prism viewing through it the said
+Hole, I observed the length of its refracted Image to be many times
+greater than its breadth, and that the most refracted part thereof
+appeared violet, the least refracted red, the middle parts blue, green
+and yellow in order. The same thing happen'd when I removed the Prism
+out of the Sun's Light, and looked through it upon the hole shining by
+the Light of the Clouds beyond it. And yet if the Refraction were done
+regularly according to one certain Proportion of the Sines of Incidence
+and Refraction as is vulgarly supposed, the refracted Image ought to
+have appeared round.
+
+So then, by these two Experiments it appears, that in Equal Incidences
+there is a considerable inequality of Refractions. But whence this
+inequality arises, whether it be that some of the incident Rays are
+refracted more, and others less, constantly, or by chance, or that one
+and the same Ray is by Refraction disturbed, shatter'd, dilated, and as
+it were split and spread into many diverging Rays, as _Grimaldo_
+supposes, does not yet appear by these Experiments, but will appear by
+those that follow.
+
+_Exper._ 5. Considering therefore, that if in the third Experiment the
+Image of the Sun should be drawn out into an oblong Form, either by a
+Dilatation of every Ray, or by any other casual inequality of the
+Refractions, the same oblong Image would by a second Refraction made
+sideways be drawn out as much in breadth by the like Dilatation of the
+Rays, or other casual inequality of the Refractions sideways, I tried
+what would be the Effects of such a second Refraction. For this end I
+ordered all things as in the third Experiment, and then placed a second
+Prism immediately after the first in a cross Position to it, that it
+might again refract the beam of the Sun's Light which came to it through
+the first Prism. In the first Prism this beam was refracted upwards, and
+in the second sideways. And I found that by the Refraction of the second
+Prism, the breadth of the Image was not increased, but its superior
+part, which in the first Prism suffered the greater Refraction, and
+appeared violet and blue, did again in the second Prism suffer a greater
+Refraction than its inferior part, which appeared red and yellow, and
+this without any Dilatation of the Image in breadth.
+
+[Illustration: FIG. 14]
+
+_Illustration._ Let S [_Fig._ 14, 15.] represent the Sun, F the hole in
+the Window, ABC the first Prism, DH the second Prism, Y the round Image
+of the Sun made by a direct beam of Light when the Prisms are taken
+away, PT the oblong Image of the Sun made by that beam passing through
+the first Prism alone, when the second Prism is taken away, and _pt_ the
+Image made by the cross Refractions of both Prisms together. Now if the
+Rays which tend towards the several Points of the round Image Y were
+dilated and spread by the Refraction of the first Prism, so that they
+should not any longer go in single Lines to single Points, but that
+every Ray being split, shattered, and changed from a Linear Ray to a
+Superficies of Rays diverging from the Point of Refraction, and lying in
+the Plane of the Angles of Incidence and Refraction, they should go in
+those Planes to so many Lines reaching almost from one end of the Image
+PT to the other, and if that Image should thence become oblong: those
+Rays and their several parts tending towards the several Points of the
+Image PT ought to be again dilated and spread sideways by the transverse
+Refraction of the second Prism, so as to compose a four square Image,
+such as is represented at [Greek: pt]. For the better understanding of
+which, let the Image PT be distinguished into five equal parts PQK,
+KQRL, LRSM, MSVN, NVT. And by the same irregularity that the orbicular
+Light Y is by the Refraction of the first Prism dilated and drawn out
+into a long Image PT, the Light PQK which takes up a space of the same
+length and breadth with the Light Y ought to be by the Refraction of the
+second Prism dilated and drawn out into the long Image _[Greek: p]qkp_,
+and the Light KQRL into the long Image _kqrl_, and the Lights LRSM,
+MSVN, NVT, into so many other long Images _lrsm_, _msvn_, _nvt[Greek:
+t]_; and all these long Images would compose the four square Images
+_[Greek: pt]_. Thus it ought to be were every Ray dilated by Refraction,
+and spread into a triangular Superficies of Rays diverging from the
+Point of Refraction. For the second Refraction would spread the Rays one
+way as much as the first doth another, and so dilate the Image in
+breadth as much as the first doth in length. And the same thing ought to
+happen, were some rays casually refracted more than others. But the
+Event is otherwise. The Image PT was not made broader by the Refraction
+of the second Prism, but only became oblique, as 'tis represented at
+_pt_, its upper end P being by the Refraction translated to a greater
+distance than its lower end T. So then the Light which went towards the
+upper end P of the Image, was (at equal Incidences) more refracted in
+the second Prism, than the Light which tended towards the lower end T,
+that is the blue and violet, than the red and yellow; and therefore was
+more refrangible. The same Light was by the Refraction of the first
+Prism translated farther from the place Y to which it tended before
+Refraction; and therefore suffered as well in the first Prism as in the
+second a greater Refraction than the rest of the Light, and by
+consequence was more refrangible than the rest, even before its
+incidence on the first Prism.
+
+Sometimes I placed a third Prism after the second, and sometimes also a
+fourth after the third, by all which the Image might be often refracted
+sideways: but the Rays which were more refracted than the rest in the
+first Prism were also more refracted in all the rest, and that without
+any Dilatation of the Image sideways: and therefore those Rays for their
+constancy of a greater Refraction are deservedly reputed more
+refrangible.
+
+[Illustration: FIG. 15]
+
+But that the meaning of this Experiment may more clearly appear, it is
+to be considered that the Rays which are equally refrangible do fall
+upon a Circle answering to the Sun's Disque. For this was proved in the
+third Experiment. By a Circle I understand not here a perfect
+geometrical Circle, but any orbicular Figure whose length is equal to
+its breadth, and which, as to Sense, may seem circular. Let therefore AG
+[in _Fig._ 15.] represent the Circle which all the most refrangible Rays
+propagated from the whole Disque of the Sun, would illuminate and paint
+upon the opposite Wall if they were alone; EL the Circle which all the
+least refrangible Rays would in like manner illuminate and paint if they
+were alone; BH, CJ, DK, the Circles which so many intermediate sorts of
+Rays would successively paint upon the Wall, if they were singly
+propagated from the Sun in successive order, the rest being always
+intercepted; and conceive that there are other intermediate Circles
+without Number, which innumerable other intermediate sorts of Rays would
+successively paint upon the Wall if the Sun should successively emit
+every sort apart. And seeing the Sun emits all these sorts at once, they
+must all together illuminate and paint innumerable equal Circles, of all
+which, being according to their degrees of Refrangibility placed in
+order in a continual Series, that oblong Spectrum PT is composed which I
+described in the third Experiment. Now if the Sun's circular Image Y [in
+_Fig._ 15.] which is made by an unrefracted beam of Light was by any
+Dilation of the single Rays, or by any other irregularity in the
+Refraction of the first Prism, converted into the oblong Spectrum, PT:
+then ought every Circle AG, BH, CJ, &c. in that Spectrum, by the cross
+Refraction of the second Prism again dilating or otherwise scattering
+the Rays as before, to be in like manner drawn out and transformed into
+an oblong Figure, and thereby the breadth of the Image PT would be now
+as much augmented as the length of the Image Y was before by the
+Refraction of the first Prism; and thus by the Refractions of both
+Prisms together would be formed a four square Figure _p[Greek:
+p]t[Greek: t]_, as I described above. Wherefore since the breadth of the
+Spectrum PT is not increased by the Refraction sideways, it is certain
+that the Rays are not split or dilated, or otherways irregularly
+scatter'd by that Refraction, but that every Circle is by a regular and
+uniform Refraction translated entire into another Place, as the Circle
+AG by the greatest Refraction into the place _ag_, the Circle BH by a
+less Refraction into the place _bh_, the Circle CJ by a Refraction still
+less into the place _ci_, and so of the rest; by which means a new
+Spectrum _pt_ inclined to the former PT is in like manner composed of
+Circles lying in a right Line; and these Circles must be of the same
+bigness with the former, because the breadths of all the Spectrums Y, PT
+and _pt_ at equal distances from the Prisms are equal.
+
+I considered farther, that by the breadth of the hole F through which
+the Light enters into the dark Chamber, there is a Penumbra made in the
+Circuit of the Spectrum Y, and that Penumbra remains in the rectilinear
+Sides of the Spectrums PT and _pt_. I placed therefore at that hole a
+Lens or Object-glass of a Telescope which might cast the Image of the
+Sun distinctly on Y without any Penumbra at all, and found that the
+Penumbra of the rectilinear Sides of the oblong Spectrums PT and _pt_
+was also thereby taken away, so that those Sides appeared as distinctly
+defined as did the Circumference of the first Image Y. Thus it happens
+if the Glass of the Prisms be free from Veins, and their sides be
+accurately plane and well polished without those numberless Waves or
+Curles which usually arise from Sand-holes a little smoothed in
+polishing with Putty. If the Glass be only well polished and free from
+Veins, and the Sides not accurately plane, but a little Convex or
+Concave, as it frequently happens; yet may the three Spectrums Y, PT and
+_pt_ want Penumbras, but not in equal distances from the Prisms. Now
+from this want of Penumbras, I knew more certainly that every one of the
+Circles was refracted according to some most regular, uniform and
+constant Law. For if there were any irregularity in the Refraction, the
+right Lines AE and GL, which all the Circles in the Spectrum PT do
+touch, could not by that Refraction be translated into the Lines _ae_
+and _gl_ as distinct and straight as they were before, but there would
+arise in those translated Lines some Penumbra or Crookedness or
+Undulation, or other sensible Perturbation contrary to what is found by
+Experience. Whatsoever Penumbra or Perturbation should be made in the
+Circles by the cross Refraction of the second Prism, all that Penumbra
+or Perturbation would be conspicuous in the right Lines _ae_ and _gl_
+which touch those Circles. And therefore since there is no such Penumbra
+or Perturbation in those right Lines, there must be none in the
+Circles. Since the distance between those Tangents or breadth of the
+Spectrum is not increased by the Refractions, the Diameters of the
+Circles are not increased thereby. Since those Tangents continue to be
+right Lines, every Circle which in the first Prism is more or less
+refracted, is exactly in the same proportion more or less refracted in
+the second. And seeing all these things continue to succeed after the
+same manner when the Rays are again in a third Prism, and again in a
+fourth refracted sideways, it is evident that the Rays of one and the
+same Circle, as to their degree of Refrangibility, continue always
+uniform and homogeneal to one another, and that those of several Circles
+do differ in degree of Refrangibility, and that in some certain and
+constant Proportion. Which is the thing I was to prove.
+
+There is yet another Circumstance or two of this Experiment by which it
+becomes still more plain and convincing. Let the second Prism DH [in
+_Fig._ 16.] be placed not immediately after the first, but at some
+distance from it; suppose in the mid-way between it and the Wall on
+which the oblong Spectrum PT is cast, so that the Light from the first
+Prism may fall upon it in the form of an oblong Spectrum [Greek: pt]
+parallel to this second Prism, and be refracted sideways to form the
+oblong Spectrum _pt_ upon the Wall. And you will find as before, that
+this Spectrum _pt_ is inclined to that Spectrum PT, which the first
+Prism forms alone without the second; the blue ends P and _p_ being
+farther distant from one another than the red ones T and _t_, and by
+consequence that the Rays which go to the blue end [Greek: p] of the
+Image [Greek: pt], and which therefore suffer the greatest Refraction in
+the first Prism, are again in the second Prism more refracted than the
+rest.
+
+[Illustration: FIG. 16.]
+
+[Illustration: FIG. 17.]
+
+The same thing I try'd also by letting the Sun's Light into a dark Room
+through two little round holes F and [Greek: ph] [in _Fig._ 17.] made in
+the Window, and with two parallel Prisms ABC and [Greek: abg] placed at
+those holes (one at each) refracting those two beams of Light to the
+opposite Wall of the Chamber, in such manner that the two colour'd
+Images PT and MN which they there painted were joined end to end and lay
+in one straight Line, the red end T of the one touching the blue end M
+of the other. For if these two refracted Beams were again by a third
+Prism DH placed cross to the two first, refracted sideways, and the
+Spectrums thereby translated to some other part of the Wall of the
+Chamber, suppose the Spectrum PT to _pt_ and the Spectrum MN to _mn_,
+these translated Spectrums _pt_ and _mn_ would not lie in one straight
+Line with their ends contiguous as before, but be broken off from one
+another and become parallel, the blue end _m_ of the Image _mn_ being by
+a greater Refraction translated farther from its former place MT, than
+the red end _t_ of the other Image _pt_ from the same place MT; which
+puts the Proposition past Dispute. And this happens whether the third
+Prism DH be placed immediately after the two first, or at a great
+distance from them, so that the Light refracted in the two first Prisms
+be either white and circular, or coloured and oblong when it falls on
+the third.
+
+_Exper._ 6. In the middle of two thin Boards I made round holes a third
+part of an Inch in diameter, and in the Window-shut a much broader hole
+being made to let into my darkned Chamber a large Beam of the Sun's
+Light; I placed a Prism behind the Shut in that beam to refract it
+towards the opposite Wall, and close behind the Prism I fixed one of the
+Boards, in such manner that the middle of the refracted Light might pass
+through the hole made in it, and the rest be intercepted by the Board.
+Then at the distance of about twelve Feet from the first Board I fixed
+the other Board in such manner that the middle of the refracted Light
+which came through the hole in the first Board, and fell upon the
+opposite Wall, might pass through the hole in this other Board, and the
+rest being intercepted by the Board might paint upon it the coloured
+Spectrum of the Sun. And close behind this Board I fixed another Prism
+to refract the Light which came through the hole. Then I returned
+speedily to the first Prism, and by turning it slowly to and fro about
+its Axis, I caused the Image which fell upon the second Board to move up
+and down upon that Board, that all its parts might successively pass
+through the hole in that Board and fall upon the Prism behind it. And in
+the mean time, I noted the places on the opposite Wall to which that
+Light after its Refraction in the second Prism did pass; and by the
+difference of the places I found that the Light which being most
+refracted in the first Prism did go to the blue end of the Image, was
+again more refracted in the second Prism than the Light which went to
+the red end of that Image, which proves as well the first Proposition as
+the second. And this happened whether the Axis of the two Prisms were
+parallel, or inclined to one another, and to the Horizon in any given
+Angles.
+
+_Illustration._ Let F [in _Fig._ 18.] be the wide hole in the
+Window-shut, through which the Sun shines upon the first Prism ABC, and
+let the refracted Light fall upon the middle of the Board DE, and the
+middle part of that Light upon the hole G made in the middle part of
+that Board. Let this trajected part of that Light fall again upon the
+middle of the second Board _de_, and there paint such an oblong coloured
+Image of the Sun as was described in the third Experiment. By turning
+the Prism ABC slowly to and fro about its Axis, this Image will be made
+to move up and down the Board _de_, and by this means all its parts from
+one end to the other may be made to pass successively through the hole
+_g_ which is made in the middle of that Board. In the mean while another
+Prism _abc_ is to be fixed next after that hole _g_, to refract the
+trajected Light a second time. And these things being thus ordered, I
+marked the places M and N of the opposite Wall upon which the refracted
+Light fell, and found that whilst the two Boards and second Prism
+remained unmoved, those places by turning the first Prism about its Axis
+were changed perpetually. For when the lower part of the Light which
+fell upon the second Board _de_ was cast through the hole _g_, it went
+to a lower place M on the Wall and when the higher part of that Light
+was cast through the same hole _g_, it went to a higher place N on the
+Wall, and when any intermediate part of the Light was cast through that
+hole, it went to some place on the Wall between M and N. The unchanged
+Position of the holes in the Boards, made the Incidence of the Rays upon
+the second Prism to be the same in all cases. And yet in that common
+Incidence some of the Rays were more refracted, and others less. And
+those were more refracted in this Prism, which by a greater Refraction
+in the first Prism were more turned out of the way, and therefore for
+their Constancy of being more refracted are deservedly called more
+refrangible.
+
+[Illustration: FIG. 18.]
+
+[Illustration: FIG. 20.]
+
+_Exper._ 7. At two holes made near one another in my Window-shut I
+placed two Prisms, one at each, which might cast upon the opposite Wall
+(after the manner of the third Experiment) two oblong coloured Images of
+the Sun. And at a little distance from the Wall I placed a long slender
+Paper with straight and parallel edges, and ordered the Prisms and Paper
+so, that the red Colour of one Image might fall directly upon one half
+of the Paper, and the violet Colour of the other Image upon the other
+half of the same Paper; so that the Paper appeared of two Colours, red
+and violet, much after the manner of the painted Paper in the first and
+second Experiments. Then with a black Cloth I covered the Wall behind
+the Paper, that no Light might be reflected from it to disturb the
+Experiment, and viewing the Paper through a third Prism held parallel
+to it, I saw that half of it which was illuminated by the violet Light
+to be divided from the other half by a greater Refraction, especially
+when I went a good way off from the Paper. For when I viewed it too near
+at hand, the two halfs of the Paper did not appear fully divided from
+one another, but seemed contiguous at one of their Angles like the
+painted Paper in the first Experiment. Which also happened when the
+Paper was too broad.
+
+[Illustration: FIG. 19.]
+
+Sometimes instead of the Paper I used a white Thred, and this appeared
+through the Prism divided into two parallel Threds as is represented in
+the nineteenth Figure, where DG denotes the Thred illuminated with
+violet Light from D to E and with red Light from F to G, and _defg_ are
+the parts of the Thred seen by Refraction. If one half of the Thred be
+constantly illuminated with red, and the other half be illuminated with
+all the Colours successively, (which may be done by causing one of the
+Prisms to be turned about its Axis whilst the other remains unmoved)
+this other half in viewing the Thred through the Prism, will appear in
+a continual right Line with the first half when illuminated with red,
+and begin to be a little divided from it when illuminated with Orange,
+and remove farther from it when illuminated with yellow, and still
+farther when with green, and farther when with blue, and go yet farther
+off when illuminated with Indigo, and farthest when with deep violet.
+Which plainly shews, that the Lights of several Colours are more and
+more refrangible one than another, in this Order of their Colours, red,
+orange, yellow, green, blue, indigo, deep violet; and so proves as well
+the first Proposition as the second.
+
+I caused also the coloured Spectrums PT [in _Fig._ 17.] and MN made in a
+dark Chamber by the Refractions of two Prisms to lie in a Right Line end
+to end, as was described above in the fifth Experiment, and viewing them
+through a third Prism held parallel to their Length, they appeared no
+longer in a Right Line, but became broken from one another, as they are
+represented at _pt_ and _mn_, the violet end _m_ of the Spectrum _mn_
+being by a greater Refraction translated farther from its former Place
+MT than the red end _t_ of the other Spectrum _pt_.
+
+I farther caused those two Spectrums PT [in _Fig._ 20.] and MN to become
+co-incident in an inverted Order of their Colours, the red end of each
+falling on the violet end of the other, as they are represented in the
+oblong Figure PTMN; and then viewing them through a Prism DH held
+parallel to their Length, they appeared not co-incident, as when view'd
+with the naked Eye, but in the form of two distinct Spectrums _pt_ and
+_mn_ crossing one another in the middle after the manner of the Letter
+X. Which shews that the red of the one Spectrum and violet of the other,
+which were co-incident at PN and MT, being parted from one another by a
+greater Refraction of the violet to _p_ and _m_ than of the red to _n_
+and _t_, do differ in degrees of Refrangibility.
+
+I illuminated also a little Circular Piece of white Paper all over with
+the Lights of both Prisms intermixed, and when it was illuminated with
+the red of one Spectrum, and deep violet of the other, so as by the
+Mixture of those Colours to appear all over purple, I viewed the Paper,
+first at a less distance, and then at a greater, through a third Prism;
+and as I went from the Paper, the refracted Image thereof became more
+and more divided by the unequal Refraction of the two mixed Colours, and
+at length parted into two distinct Images, a red one and a violet one,
+whereof the violet was farthest from the Paper, and therefore suffered
+the greatest Refraction. And when that Prism at the Window, which cast
+the violet on the Paper was taken away, the violet Image disappeared;
+but when the other Prism was taken away the red vanished; which shews,
+that these two Images were nothing else than the Lights of the two
+Prisms, which had been intermixed on the purple Paper, but were parted
+again by their unequal Refractions made in the third Prism, through
+which the Paper was view'd. This also was observable, that if one of the
+Prisms at the Window, suppose that which cast the violet on the Paper,
+was turned about its Axis to make all the Colours in this order,
+violet, indigo, blue, green, yellow, orange, red, fall successively on
+the Paper from that Prism, the violet Image changed Colour accordingly,
+turning successively to indigo, blue, green, yellow and red, and in
+changing Colour came nearer and nearer to the red Image made by the
+other Prism, until when it was also red both Images became fully
+co-incident.
+
+I placed also two Paper Circles very near one another, the one in the
+red Light of one Prism, and the other in the violet Light of the other.
+The Circles were each of them an Inch in diameter, and behind them the
+Wall was dark, that the Experiment might not be disturbed by any Light
+coming from thence. These Circles thus illuminated, I viewed through a
+Prism, so held, that the Refraction might be made towards the red
+Circle, and as I went from them they came nearer and nearer together,
+and at length became co-incident; and afterwards when I went still
+farther off, they parted again in a contrary Order, the violet by a
+greater Refraction being carried beyond the red.
+
+_Exper._ 8. In Summer, when the Sun's Light uses to be strongest, I
+placed a Prism at the Hole of the Window-shut, as in the third
+Experiment, yet so that its Axis might be parallel to the Axis of the
+World, and at the opposite Wall in the Sun's refracted Light, I placed
+an open Book. Then going six Feet and two Inches from the Book, I placed
+there the above-mentioned Lens, by which the Light reflected from the
+Book might be made to converge and meet again at the distance of six
+Feet and two Inches behind the Lens, and there paint the Species of the
+Book upon a Sheet of white Paper much after the manner of the second
+Experiment. The Book and Lens being made fast, I noted the Place where
+the Paper was, when the Letters of the Book, illuminated by the fullest
+red Light of the Solar Image falling upon it, did cast their Species on
+that Paper most distinctly: And then I stay'd till by the Motion of the
+Sun, and consequent Motion of his Image on the Book, all the Colours
+from that red to the middle of the blue pass'd over those Letters; and
+when those Letters were illuminated by that blue, I noted again the
+Place of the Paper when they cast their Species most distinctly upon it:
+And I found that this last Place of the Paper was nearer to the Lens
+than its former Place by about two Inches and an half, or two and three
+quarters. So much sooner therefore did the Light in the violet end of
+the Image by a greater Refraction converge and meet, than the Light in
+the red end. But in trying this, the Chamber was as dark as I could make
+it. For, if these Colours be diluted and weakned by the Mixture of any
+adventitious Light, the distance between the Places of the Paper will
+not be so great. This distance in the second Experiment, where the
+Colours of natural Bodies were made use of, was but an Inch and an half,
+by reason of the Imperfection of those Colours. Here in the Colours of
+the Prism, which are manifestly more full, intense, and lively than
+those of natural Bodies, the distance is two Inches and three quarters.
+And were the Colours still more full, I question not but that the
+distance would be considerably greater. For the coloured Light of the
+Prism, by the interfering of the Circles described in the second Figure
+of the fifth Experiment, and also by the Light of the very bright Clouds
+next the Sun's Body intermixing with these Colours, and by the Light
+scattered by the Inequalities in the Polish of the Prism, was so very
+much compounded, that the Species which those faint and dark Colours,
+the indigo and violet, cast upon the Paper were not distinct enough to
+be well observed.
+
+_Exper._ 9. A Prism, whose two Angles at its Base were equal to one
+another, and half right ones, and the third a right one, I placed in a
+Beam of the Sun's Light let into a dark Chamber through a Hole in the
+Window-shut, as in the third Experiment. And turning the Prism slowly
+about its Axis, until all the Light which went through one of its
+Angles, and was refracted by it began to be reflected by its Base, at
+which till then it went out of the Glass, I observed that those Rays
+which had suffered the greatest Refraction were sooner reflected than
+the rest. I conceived therefore, that those Rays of the reflected Light,
+which were most refrangible, did first of all by a total Reflexion
+become more copious in that Light than the rest, and that afterwards the
+rest also, by a total Reflexion, became as copious as these. To try
+this, I made the reflected Light pass through another Prism, and being
+refracted by it to fall afterwards upon a Sheet of white Paper placed
+at some distance behind it, and there by that Refraction to paint the
+usual Colours of the Prism. And then causing the first Prism to be
+turned about its Axis as above, I observed that when those Rays, which
+in this Prism had suffered the greatest Refraction, and appeared of a
+blue and violet Colour began to be totally reflected, the blue and
+violet Light on the Paper, which was most refracted in the second Prism,
+received a sensible Increase above that of the red and yellow, which was
+least refracted; and afterwards, when the rest of the Light which was
+green, yellow, and red, began to be totally reflected in the first
+Prism, the Light of those Colours on the Paper received as great an
+Increase as the violet and blue had done before. Whence 'tis manifest,
+that the Beam of Light reflected by the Base of the Prism, being
+augmented first by the more refrangible Rays, and afterwards by the less
+refrangible ones, is compounded of Rays differently refrangible. And
+that all such reflected Light is of the same Nature with the Sun's Light
+before its Incidence on the Base of the Prism, no Man ever doubted; it
+being generally allowed, that Light by such Reflexions suffers no
+Alteration in its Modifications and Properties. I do not here take
+Notice of any Refractions made in the sides of the first Prism, because
+the Light enters it perpendicularly at the first side, and goes out
+perpendicularly at the second side, and therefore suffers none. So then,
+the Sun's incident Light being of the same Temper and Constitution with
+his emergent Light, and the last being compounded of Rays differently
+refrangible, the first must be in like manner compounded.
+
+[Illustration: FIG. 21.]
+
+_Illustration._ In the twenty-first Figure, ABC is the first Prism, BC
+its Base, B and C its equal Angles at the Base, each of 45 Degrees, A
+its rectangular Vertex, FM a beam of the Sun's Light let into a dark
+Room through a hole F one third part of an Inch broad, M its Incidence
+on the Base of the Prism, MG a less refracted Ray, MH a more refracted
+Ray, MN the beam of Light reflected from the Base, VXY the second Prism
+by which this beam in passing through it is refracted, N_t_ the less
+refracted Light of this beam, and N_p_ the more refracted part thereof.
+When the first Prism ABC is turned about its Axis according to the order
+of the Letters ABC, the Rays MH emerge more and more obliquely out of
+that Prism, and at length after their most oblique Emergence are
+reflected towards N, and going on to _p_ do increase the Number of the
+Rays N_p_. Afterwards by continuing the Motion of the first Prism, the
+Rays MG are also reflected to N and increase the number of the Rays
+N_t_. And therefore the Light MN admits into its Composition, first the
+more refrangible Rays, and then the less refrangible Rays, and yet after
+this Composition is of the same Nature with the Sun's immediate Light
+FM, the Reflexion of the specular Base BC causing no Alteration therein.
+
+_Exper._ 10. Two Prisms, which were alike in Shape, I tied so together,
+that their Axis and opposite Sides being parallel, they composed a
+Parallelopiped. And, the Sun shining into my dark Chamber through a
+little hole in the Window-shut, I placed that Parallelopiped in his beam
+at some distance from the hole, in such a Posture, that the Axes of the
+Prisms might be perpendicular to the incident Rays, and that those Rays
+being incident upon the first Side of one Prism, might go on through the
+two contiguous Sides of both Prisms, and emerge out of the last Side of
+the second Prism. This Side being parallel to the first Side of the
+first Prism, caused the emerging Light to be parallel to the incident.
+Then, beyond these two Prisms I placed a third, which might refract that
+emergent Light, and by that Refraction cast the usual Colours of the
+Prism upon the opposite Wall, or upon a sheet of white Paper held at a
+convenient Distance behind the Prism for that refracted Light to fall
+upon it. After this I turned the Parallelopiped about its Axis, and
+found that when the contiguous Sides of the two Prisms became so oblique
+to the incident Rays, that those Rays began all of them to be
+reflected, those Rays which in the third Prism had suffered the greatest
+Refraction, and painted the Paper with violet and blue, were first of
+all by a total Reflexion taken out of the transmitted Light, the rest
+remaining and on the Paper painting their Colours of green, yellow,
+orange and red, as before; and afterwards by continuing the Motion of
+the two Prisms, the rest of the Rays also by a total Reflexion vanished
+in order, according to their degrees of Refrangibility. The Light
+therefore which emerged out of the two Prisms is compounded of Rays
+differently refrangible, seeing the more refrangible Rays may be taken
+out of it, while the less refrangible remain. But this Light being
+trajected only through the parallel Superficies of the two Prisms, if it
+suffer'd any change by the Refraction of one Superficies it lost that
+Impression by the contrary Refraction of the other Superficies, and so
+being restor'd to its pristine Constitution, became of the same Nature
+and Condition as at first before its Incidence on those Prisms; and
+therefore, before its Incidence, was as much compounded of Rays
+differently refrangible, as afterwards.
+
+[Illustration: FIG. 22.]
+
+_Illustration._ In the twenty second Figure ABC and BCD are the two
+Prisms tied together in the form of a Parallelopiped, their Sides BC and
+CB being contiguous, and their Sides AB and CD parallel. And HJK is the
+third Prism, by which the Sun's Light propagated through the hole F into
+the dark Chamber, and there passing through those sides of the Prisms
+AB, BC, CB and CD, is refracted at O to the white Paper PT, falling
+there partly upon P by a greater Refraction, partly upon T by a less
+Refraction, and partly upon R and other intermediate places by
+intermediate Refractions. By turning the Parallelopiped ACBD about its
+Axis, according to the order of the Letters A, C, D, B, at length when
+the contiguous Planes BC and CB become sufficiently oblique to the Rays
+FM, which are incident upon them at M, there will vanish totally out of
+the refracted Light OPT, first of all the most refracted Rays OP, (the
+rest OR and OT remaining as before) then the Rays OR and other
+intermediate ones, and lastly, the least refracted Rays OT. For when
+the Plane BC becomes sufficiently oblique to the Rays incident upon it,
+those Rays will begin to be totally reflected by it towards N; and first
+the most refrangible Rays will be totally reflected (as was explained in
+the preceding Experiment) and by Consequence must first disappear at P,
+and afterwards the rest as they are in order totally reflected to N,
+they must disappear in the same order at R and T. So then the Rays which
+at O suffer the greatest Refraction, may be taken out of the Light MO
+whilst the rest of the Rays remain in it, and therefore that Light MO is
+compounded of Rays differently refrangible. And because the Planes AB
+and CD are parallel, and therefore by equal and contrary Refractions
+destroy one anothers Effects, the incident Light FM must be of the same
+Kind and Nature with the emergent Light MO, and therefore doth also
+consist of Rays differently refrangible. These two Lights FM and MO,
+before the most refrangible Rays are separated out of the emergent Light
+MO, agree in Colour, and in all other Properties so far as my
+Observation reaches, and therefore are deservedly reputed of the same
+Nature and Constitution, and by Consequence the one is compounded as
+well as the other. But after the most refrangible Rays begin to be
+totally reflected, and thereby separated out of the emergent Light MO,
+that Light changes its Colour from white to a dilute and faint yellow, a
+pretty good orange, a very full red successively, and then totally
+vanishes. For after the most refrangible Rays which paint the Paper at
+P with a purple Colour, are by a total Reflexion taken out of the beam
+of Light MO, the rest of the Colours which appear on the Paper at R and
+T being mix'd in the Light MO compound there a faint yellow, and after
+the blue and part of the green which appear on the Paper between P and R
+are taken away, the rest which appear between R and T (that is the
+yellow, orange, red and a little green) being mixed in the beam MO
+compound there an orange; and when all the Rays are by Reflexion taken
+out of the beam MO, except the least refrangible, which at T appear of a
+full red, their Colour is the same in that beam MO as afterwards at T,
+the Refraction of the Prism HJK serving only to separate the differently
+refrangible Rays, without making any Alteration in their Colours, as
+shall be more fully proved hereafter. All which confirms as well the
+first Proposition as the second.
+
+_Scholium._ If this Experiment and the former be conjoined and made one
+by applying a fourth Prism VXY [in _Fig._ 22.] to refract the reflected
+beam MN towards _tp_, the Conclusion will be clearer. For then the Light
+N_p_ which in the fourth Prism is more refracted, will become fuller and
+stronger when the Light OP, which in the third Prism HJK is more
+refracted, vanishes at P; and afterwards when the less refracted Light
+OT vanishes at T, the less refracted Light N_t_ will become increased
+whilst the more refracted Light at _p_ receives no farther increase. And
+as the trajected beam MO in vanishing is always of such a Colour as
+ought to result from the mixture of the Colours which fall upon the
+Paper PT, so is the reflected beam MN always of such a Colour as ought
+to result from the mixture of the Colours which fall upon the Paper
+_pt_. For when the most refrangible Rays are by a total Reflexion taken
+out of the beam MO, and leave that beam of an orange Colour, the Excess
+of those Rays in the reflected Light, does not only make the violet,
+indigo and blue at _p_ more full, but also makes the beam MN change from
+the yellowish Colour of the Sun's Light, to a pale white inclining to
+blue, and afterward recover its yellowish Colour again, so soon as all
+the rest of the transmitted Light MOT is reflected.
+
+Now seeing that in all this variety of Experiments, whether the Trial be
+made in Light reflected, and that either from natural Bodies, as in the
+first and second Experiment, or specular, as in the ninth; or in Light
+refracted, and that either before the unequally refracted Rays are by
+diverging separated from one another, and losing their whiteness which
+they have altogether, appear severally of several Colours, as in the
+fifth Experiment; or after they are separated from one another, and
+appear colour'd as in the sixth, seventh, and eighth Experiments; or in
+Light trajected through parallel Superficies, destroying each others
+Effects, as in the tenth Experiment; there are always found Rays, which
+at equal Incidences on the same Medium suffer unequal Refractions, and
+that without any splitting or dilating of single Rays, or contingence in
+the inequality of the Refractions, as is proved in the fifth and sixth
+Experiments. And seeing the Rays which differ in Refrangibility may be
+parted and sorted from one another, and that either by Refraction as in
+the third Experiment, or by Reflexion as in the tenth, and then the
+several sorts apart at equal Incidences suffer unequal Refractions, and
+those sorts are more refracted than others after Separation, which were
+more refracted before it, as in the sixth and following Experiments, and
+if the Sun's Light be trajected through three or more cross Prisms
+successively, those Rays which in the first Prism are refracted more
+than others, are in all the following Prisms refracted more than others
+in the same Rate and Proportion, as appears by the fifth Experiment;
+it's manifest that the Sun's Light is an heterogeneous Mixture of Rays,
+some of which are constantly more refrangible than others, as was
+proposed.
+
+
+_PROP._ III. THEOR. III.
+
+_The Sun's Light consists of Rays differing in Reflexibility, and those
+Rays are more reflexible than others which are more refrangible._
+
+This is manifest by the ninth and tenth Experiments: For in the ninth
+Experiment, by turning the Prism about its Axis, until the Rays within
+it which in going out into the Air were refracted by its Base, became so
+oblique to that Base, as to begin to be totally reflected thereby; those
+Rays became first of all totally reflected, which before at equal
+Incidences with the rest had suffered the greatest Refraction. And the
+same thing happens in the Reflexion made by the common Base of the two
+Prisms in the tenth Experiment.
+
+
+_PROP._ IV. PROB. I.
+
+_To separate from one another the heterogeneous Rays of compound Light._
+
+[Illustration: FIG. 23.]
+
+The heterogeneous Rays are in some measure separated from one another by
+the Refraction of the Prism in the third Experiment, and in the fifth
+Experiment, by taking away the Penumbra from the rectilinear sides of
+the coloured Image, that Separation in those very rectilinear sides or
+straight edges of the Image becomes perfect. But in all places between
+those rectilinear edges, those innumerable Circles there described,
+which are severally illuminated by homogeneal Rays, by interfering with
+one another, and being every where commix'd, do render the Light
+sufficiently compound. But if these Circles, whilst their Centers keep
+their Distances and Positions, could be made less in Diameter, their
+interfering one with another, and by Consequence the Mixture of the
+heterogeneous Rays would be proportionally diminish'd. In the twenty
+third Figure let AG, BH, CJ, DK, EL, FM be the Circles which so many
+sorts of Rays flowing from the same disque of the Sun, do in the third
+Experiment illuminate; of all which and innumerable other intermediate
+ones lying in a continual Series between the two rectilinear and
+parallel edges of the Sun's oblong Image PT, that Image is compos'd, as
+was explained in the fifth Experiment. And let _ag_, _bh_, _ci_, _dk_,
+_el_, _fm_ be so many less Circles lying in a like continual Series
+between two parallel right Lines _af_ and _gm_ with the same distances
+between their Centers, and illuminated by the same sorts of Rays, that
+is the Circle _ag_ with the same sort by which the corresponding Circle
+AG was illuminated, and the Circle _bh_ with the same sort by which the
+corresponding Circle BH was illuminated, and the rest of the Circles
+_ci_, _dk_, _el_, _fm_ respectively, with the same sorts of Rays by
+which the several corresponding Circles CJ, DK, EL, FM were illuminated.
+In the Figure PT composed of the greater Circles, three of those Circles
+AG, BH, CJ, are so expanded into one another, that the three sorts of
+Rays by which those Circles are illuminated, together with other
+innumerable sorts of intermediate Rays, are mixed at QR in the middle
+of the Circle BH. And the like Mixture happens throughout almost the
+whole length of the Figure PT. But in the Figure _pt_ composed of the
+less Circles, the three less Circles _ag_, _bh_, _ci_, which answer to
+those three greater, do not extend into one another; nor are there any
+where mingled so much as any two of the three sorts of Rays by which
+those Circles are illuminated, and which in the Figure PT are all of
+them intermingled at BH.
+
+Now he that shall thus consider it, will easily understand that the
+Mixture is diminished in the same Proportion with the Diameters of the
+Circles. If the Diameters of the Circles whilst their Centers remain the
+same, be made three times less than before, the Mixture will be also
+three times less; if ten times less, the Mixture will be ten times less,
+and so of other Proportions. That is, the Mixture of the Rays in the
+greater Figure PT will be to their Mixture in the less _pt_, as the
+Latitude of the greater Figure is to the Latitude of the less. For the
+Latitudes of these Figures are equal to the Diameters of their Circles.
+And hence it easily follows, that the Mixture of the Rays in the
+refracted Spectrum _pt_ is to the Mixture of the Rays in the direct and
+immediate Light of the Sun, as the breadth of that Spectrum is to the
+difference between the length and breadth of the same Spectrum.
+
+So then, if we would diminish the Mixture of the Rays, we are to
+diminish the Diameters of the Circles. Now these would be diminished if
+the Sun's Diameter to which they answer could be made less than it is,
+or (which comes to the same Purpose) if without Doors, at a great
+distance from the Prism towards the Sun, some opake Body were placed,
+with a round hole in the middle of it, to intercept all the Sun's Light,
+excepting so much as coming from the middle of his Body could pass
+through that Hole to the Prism. For so the Circles AG, BH, and the rest,
+would not any longer answer to the whole Disque of the Sun, but only to
+that Part of it which could be seen from the Prism through that Hole,
+that it is to the apparent Magnitude of that Hole view'd from the Prism.
+But that these Circles may answer more distinctly to that Hole, a Lens
+is to be placed by the Prism to cast the Image of the Hole, (that is,
+every one of the Circles AG, BH, &c.) distinctly upon the Paper at PT,
+after such a manner, as by a Lens placed at a Window, the Species of
+Objects abroad are cast distinctly upon a Paper within the Room, and the
+rectilinear Sides of the oblong Solar Image in the fifth Experiment
+became distinct without any Penumbra. If this be done, it will not be
+necessary to place that Hole very far off, no not beyond the Window. And
+therefore instead of that Hole, I used the Hole in the Window-shut, as
+follows.
+
+_Exper._ 11. In the Sun's Light let into my darken'd Chamber through a
+small round Hole in my Window-shut, at about ten or twelve Feet from the
+Window, I placed a Lens, by which the Image of the Hole might be
+distinctly cast upon a Sheet of white Paper, placed at the distance of
+six, eight, ten, or twelve Feet from the Lens. For, according to the
+difference of the Lenses I used various distances, which I think not
+worth the while to describe. Then immediately after the Lens I placed a
+Prism, by which the trajected Light might be refracted either upwards or
+sideways, and thereby the round Image, which the Lens alone did cast
+upon the Paper might be drawn out into a long one with Parallel Sides,
+as in the third Experiment. This oblong Image I let fall upon another
+Paper at about the same distance from the Prism as before, moving the
+Paper either towards the Prism or from it, until I found the just
+distance where the Rectilinear Sides of the Image became most distinct.
+For in this Case, the Circular Images of the Hole, which compose that
+Image after the same manner that the Circles _ag_, _bh_, _ci_, &c. do
+the Figure _pt_ [in _Fig._ 23.] were terminated most distinctly without
+any Penumbra, and therefore extended into one another the least that
+they could, and by consequence the Mixture of the heterogeneous Rays was
+now the least of all. By this means I used to form an oblong Image (such
+as is _pt_) [in _Fig._ 23, and 24.] of Circular Images of the Hole,
+(such as are _ag_, _bh_, _ci_, &c.) and by using a greater or less Hole
+in the Window-shut, I made the Circular Images _ag_, _bh_, _ci_, &c. of
+which it was formed, to become greater or less at pleasure, and thereby
+the Mixture of the Rays in the Image _pt_ to be as much, or as little as
+I desired.
+
+[Illustration: FIG. 24.]
+
+_Illustration._ In the twenty-fourth Figure, F represents the Circular
+Hole in the Window-shut, MN the Lens, whereby the Image or Species of
+that Hole is cast distinctly upon a Paper at J, ABC the Prism, whereby
+the Rays are at their emerging out of the Lens refracted from J towards
+another Paper at _pt_, and the round Image at J is turned into an oblong
+Image _pt_ falling on that other Paper. This Image _pt_ consists of
+Circles placed one after another in a Rectilinear Order, as was
+sufficiently explained in the fifth Experiment; and these Circles are
+equal to the Circle J, and consequently answer in magnitude to the Hole
+F; and therefore by diminishing that Hole they may be at pleasure
+diminished, whilst their Centers remain in their Places. By this means I
+made the Breadth of the Image _pt_ to be forty times, and sometimes
+sixty or seventy times less than its Length. As for instance, if the
+Breadth of the Hole F be one tenth of an Inch, and MF the distance of
+the Lens from the Hole be 12 Feet; and if _p_B or _p_M the distance of
+the Image _pt_ from the Prism or Lens be 10 Feet, and the refracting
+Angle of the Prism be 62 Degrees, the Breadth of the Image _pt_ will be
+one twelfth of an Inch, and the Length about six Inches, and therefore
+the Length to the Breadth as 72 to 1, and by consequence the Light of
+this Image 71 times less compound than the Sun's direct Light. And Light
+thus far simple and homogeneal, is sufficient for trying all the
+Experiments in this Book about simple Light. For the Composition of
+heterogeneal Rays is in this Light so little, that it is scarce to be
+discovered and perceiv'd by Sense, except perhaps in the indigo and
+violet. For these being dark Colours do easily suffer a sensible Allay
+by that little scattering Light which uses to be refracted irregularly
+by the Inequalities of the Prism.
+
+Yet instead of the Circular Hole F, 'tis better to substitute an oblong
+Hole shaped like a long Parallelogram with its Length parallel to the
+Prism ABC. For if this Hole be an Inch or two long, and but a tenth or
+twentieth Part of an Inch broad, or narrower; the Light of the Image
+_pt_ will be as simple as before, or simpler, and the Image will become
+much broader, and therefore more fit to have Experiments try'd in its
+Light than before.
+
+Instead of this Parallelogram Hole may be substituted a triangular one
+of equal Sides, whose Base, for instance, is about the tenth Part of an
+Inch, and its Height an Inch or more. For by this means, if the Axis of
+the Prism be parallel to the Perpendicular of the Triangle, the Image
+_pt_ [in _Fig._ 25.] will now be form'd of equicrural Triangles _ag_,
+_bh_, _ci_, _dk_, _el_, _fm_, &c. and innumerable other intermediate
+ones answering to the triangular Hole in Shape and Bigness, and lying
+one after another in a continual Series between two Parallel Lines _af_
+and _gm_. These Triangles are a little intermingled at their Bases, but
+not at their Vertices; and therefore the Light on the brighter Side _af_
+of the Image, where the Bases of the Triangles are, is a little
+compounded, but on the darker Side _gm_ is altogether uncompounded, and
+in all Places between the Sides the Composition is proportional to the
+distances of the Places from that obscurer Side _gm_. And having a
+Spectrum _pt_ of such a Composition, we may try Experiments either in
+its stronger and less simple Light near the Side _af_, or in its weaker
+and simpler Light near the other Side _gm_, as it shall seem most
+convenient.
+
+[Illustration: FIG. 25.]
+
+But in making Experiments of this kind, the Chamber ought to be made as
+dark as can be, lest any Foreign Light mingle it self with the Light of
+the Spectrum _pt_, and render it compound; especially if we would try
+Experiments in the more simple Light next the Side _gm_ of the Spectrum;
+which being fainter, will have a less proportion to the Foreign Light;
+and so by the mixture of that Light be more troubled, and made more
+compound. The Lens also ought to be good, such as may serve for optical
+Uses, and the Prism ought to have a large Angle, suppose of 65 or 70
+Degrees, and to be well wrought, being made of Glass free from Bubbles
+and Veins, with its Sides not a little convex or concave, as usually
+happens, but truly plane, and its Polish elaborate, as in working
+Optick-glasses, and not such as is usually wrought with Putty, whereby
+the edges of the Sand-holes being worn away, there are left all over the
+Glass a numberless Company of very little convex polite Risings like
+Waves. The edges also of the Prism and Lens, so far as they may make any
+irregular Refraction, must be covered with a black Paper glewed on. And
+all the Light of the Sun's Beam let into the Chamber, which is useless
+and unprofitable to the Experiment, ought to be intercepted with black
+Paper, or other black Obstacles. For otherwise the useless Light being
+reflected every way in the Chamber, will mix with the oblong Spectrum,
+and help to disturb it. In trying these Things, so much diligence is not
+altogether necessary, but it will promote the Success of the
+Experiments, and by a very scrupulous Examiner of Things deserves to be
+apply'd. It's difficult to get Glass Prisms fit for this Purpose, and
+therefore I used sometimes prismatick Vessels made with pieces of broken
+Looking-glasses, and filled with Rain Water. And to increase the
+Refraction, I sometimes impregnated the Water strongly with _Saccharum
+Saturni_.
+
+
+_PROP._ V. THEOR. IV.
+
+_Homogeneal Light is refracted regularly without any Dilatation
+splitting or shattering of the Rays, and the confused Vision of Objects
+seen through refracting Bodies by heterogeneal Light arises from the
+different Refrangibility of several sorts of Rays._
+
+The first Part of this Proposition has been already sufficiently proved
+in the fifth Experiment, and will farther appear by the Experiments
+which follow.
+
+_Exper._ 12. In the middle of a black Paper I made a round Hole about a
+fifth or sixth Part of an Inch in diameter. Upon this Paper I caused the
+Spectrum of homogeneal Light described in the former Proposition, so to
+fall, that some part of the Light might pass through the Hole of the
+Paper. This transmitted part of the Light I refracted with a Prism
+placed behind the Paper, and letting this refracted Light fall
+perpendicularly upon a white Paper two or three Feet distant from the
+Prism, I found that the Spectrum formed on the Paper by this Light was
+not oblong, as when 'tis made (in the third Experiment) by refracting
+the Sun's compound Light, but was (so far as I could judge by my Eye)
+perfectly circular, the Length being no greater than the Breadth. Which
+shews, that this Light is refracted regularly without any Dilatation of
+the Rays.
+
+_Exper._ 13. In the homogeneal Light I placed a Paper Circle of a
+quarter of an Inch in diameter, and in the Sun's unrefracted
+heterogeneal white Light I placed another Paper Circle of the same
+Bigness. And going from the Papers to the distance of some Feet, I
+viewed both Circles through a Prism. The Circle illuminated by the Sun's
+heterogeneal Light appeared very oblong, as in the fourth Experiment,
+the Length being many times greater than the Breadth; but the other
+Circle, illuminated with homogeneal Light, appeared circular and
+distinctly defined, as when 'tis view'd with the naked Eye. Which proves
+the whole Proposition.
+
+_Exper._ 14. In the homogeneal Light I placed Flies, and such-like
+minute Objects, and viewing them through a Prism, I saw their Parts as
+distinctly defined, as if I had viewed them with the naked Eye. The same
+Objects placed in the Sun's unrefracted heterogeneal Light, which was
+white, I viewed also through a Prism, and saw them most confusedly
+defined, so that I could not distinguish their smaller Parts from one
+another. I placed also the Letters of a small print, one while in the
+homogeneal Light, and then in the heterogeneal, and viewing them through
+a Prism, they appeared in the latter Case so confused and indistinct,
+that I could not read them; but in the former they appeared so distinct,
+that I could read readily, and thought I saw them as distinct, as when I
+view'd them with my naked Eye. In both Cases I view'd the same Objects,
+through the same Prism at the same distance from me, and in the same
+Situation. There was no difference, but in the Light by which the
+Objects were illuminated, and which in one Case was simple, and in the
+other compound; and therefore, the distinct Vision in the former Case,
+and confused in the latter, could arise from nothing else than from that
+difference of the Lights. Which proves the whole Proposition.
+
+And in these three Experiments it is farther very remarkable, that the
+Colour of homogeneal Light was never changed by the Refraction.
+
+
+_PROP._ VI. THEOR. V.
+
+_The Sine of Incidence of every Ray considered apart, is to its Sine of
+Refraction in a given Ratio._
+
+That every Ray consider'd apart, is constant to it self in some degree
+of Refrangibility, is sufficiently manifest out of what has been said.
+Those Rays, which in the first Refraction, are at equal Incidences most
+refracted, are also in the following Refractions at equal Incidences
+most refracted; and so of the least refrangible, and the rest which have
+any mean Degree of Refrangibility, as is manifest by the fifth, sixth,
+seventh, eighth, and ninth Experiments. And those which the first Time
+at like Incidences are equally refracted, are again at like Incidences
+equally and uniformly refracted, and that whether they be refracted
+before they be separated from one another, as in the fifth Experiment,
+or whether they be refracted apart, as in the twelfth, thirteenth and
+fourteenth Experiments. The Refraction therefore of every Ray apart is
+regular, and what Rule that Refraction observes we are now to shew.[E]
+
+The late Writers in Opticks teach, that the Sines of Incidence are in a
+given Proportion to the Sines of Refraction, as was explained in the
+fifth Axiom, and some by Instruments fitted for measuring of
+Refractions, or otherwise experimentally examining this Proportion, do
+acquaint us that they have found it accurate. But whilst they, not
+understanding the different Refrangibility of several Rays, conceived
+them all to be refracted according to one and the same Proportion, 'tis
+to be presumed that they adapted their Measures only to the middle of
+the refracted Light; so that from their Measures we may conclude only
+that the Rays which have a mean Degree of Refrangibility, that is, those
+which when separated from the rest appear green, are refracted according
+to a given Proportion of their Sines. And therefore we are now to shew,
+that the like given Proportions obtain in all the rest. That it should
+be so is very reasonable, Nature being ever conformable to her self; but
+an experimental Proof is desired. And such a Proof will be had, if we
+can shew that the Sines of Refraction of Rays differently refrangible
+are one to another in a given Proportion when their Sines of Incidence
+are equal. For, if the Sines of Refraction of all the Rays are in given
+Proportions to the Sine of Refractions of a Ray which has a mean Degree
+of Refrangibility, and this Sine is in a given Proportion to the equal
+Sines of Incidence, those other Sines of Refraction will also be in
+given Proportions to the equal Sines of Incidence. Now, when the Sines
+of Incidence are equal, it will appear by the following Experiment, that
+the Sines of Refraction are in a given Proportion to one another.
+
+[Illustration: FIG. 26.]
+
+_Exper._ 15. The Sun shining into a dark Chamber through a little round
+Hole in the Window-shut, let S [in _Fig._ 26.] represent his round white
+Image painted on the opposite Wall by his direct Light, PT his oblong
+coloured Image made by refracting that Light with a Prism placed at the
+Window; and _pt_, or _2p 2t_, _3p 3t_, his oblong colour'd Image made by
+refracting again the same Light sideways with a second Prism placed
+immediately after the first in a cross Position to it, as was explained
+in the fifth Experiment; that is to say, _pt_ when the Refraction of the
+second Prism is small, _2p 2t_ when its Refraction is greater, and _3p
+3t_ when it is greatest. For such will be the diversity of the
+Refractions, if the refracting Angle of the second Prism be of various
+Magnitudes; suppose of fifteen or twenty Degrees to make the Image _pt_,
+of thirty or forty to make the Image _2p 2t_, and of sixty to make the
+Image _3p 3t_. But for want of solid Glass Prisms with Angles of
+convenient Bignesses, there may be Vessels made of polished Plates of
+Glass cemented together in the form of Prisms and filled with Water.
+These things being thus ordered, I observed that all the solar Images or
+coloured Spectrums PT, _pt_, _2p 2t_, _3p 3t_ did very nearly converge
+to the place S on which the direct Light of the Sun fell and painted his
+white round Image when the Prisms were taken away. The Axis of the
+Spectrum PT, that is the Line drawn through the middle of it parallel to
+its rectilinear Sides, did when produced pass exactly through the middle
+of that white round Image S. And when the Refraction of the second Prism
+was equal to the Refraction of the first, the refracting Angles of them
+both being about 60 Degrees, the Axis of the Spectrum _3p 3t_ made by
+that Refraction, did when produced pass also through the middle of the
+same white round Image S. But when the Refraction of the second Prism
+was less than that of the first, the produced Axes of the Spectrums _tp_
+or _2t 2p_ made by that Refraction did cut the produced Axis of the
+Spectrum TP in the points _m_ and _n_, a little beyond the Center of
+that white round Image S. Whence the proportion of the Line 3_t_T to the
+Line 3_p_P was a little greater than the Proportion of 2_t_T or 2_p_P,
+and this Proportion a little greater than that of _t_T to _p_P. Now when
+the Light of the Spectrum PT falls perpendicularly upon the Wall, those
+Lines 3_t_T, 3_p_P, and 2_t_T, and 2_p_P, and _t_T, _p_P, are the
+Tangents of the Refractions, and therefore by this Experiment the
+Proportions of the Tangents of the Refractions are obtained, from whence
+the Proportions of the Sines being derived, they come out equal, so far
+as by viewing the Spectrums, and using some mathematical Reasoning I
+could estimate. For I did not make an accurate Computation. So then the
+Proposition holds true in every Ray apart, so far as appears by
+Experiment. And that it is accurately true, may be demonstrated upon
+this Supposition. _That Bodies refract Light by acting upon its Rays in
+Lines perpendicular to their Surfaces._ But in order to this
+Demonstration, I must distinguish the Motion of every Ray into two
+Motions, the one perpendicular to the refracting Surface, the other
+parallel to it, and concerning the perpendicular Motion lay down the
+following Proposition.
+
+If any Motion or moving thing whatsoever be incident with any Velocity
+on any broad and thin space terminated on both sides by two parallel
+Planes, and in its Passage through that space be urged perpendicularly
+towards the farther Plane by any force which at given distances from the
+Plane is of given Quantities; the perpendicular velocity of that Motion
+or Thing, at its emerging out of that space, shall be always equal to
+the square Root of the sum of the square of the perpendicular velocity
+of that Motion or Thing at its Incidence on that space; and of the
+square of the perpendicular velocity which that Motion or Thing would
+have at its Emergence, if at its Incidence its perpendicular velocity
+was infinitely little.
+
+And the same Proposition holds true of any Motion or Thing
+perpendicularly retarded in its passage through that space, if instead
+of the sum of the two Squares you take their difference. The
+Demonstration Mathematicians will easily find out, and therefore I shall
+not trouble the Reader with it.
+
+Suppose now that a Ray coming most obliquely in the Line MC [in _Fig._
+1.] be refracted at C by the Plane RS into the Line CN, and if it be
+required to find the Line CE, into which any other Ray AC shall be
+refracted; let MC, AD, be the Sines of Incidence of the two Rays, and
+NG, EF, their Sines of Refraction, and let the equal Motions of the
+incident Rays be represented by the equal Lines MC and AC, and the
+Motion MC being considered as parallel to the refracting Plane, let the
+other Motion AC be distinguished into two Motions AD and DC, one of
+which AD is parallel, and the other DC perpendicular to the refracting
+Surface. In like manner, let the Motions of the emerging Rays be
+distinguish'd into two, whereof the perpendicular ones are MC/NG × CG
+and AD/EF × CF. And if the force of the refracting Plane begins to act
+upon the Rays either in that Plane or at a certain distance from it on
+the one side, and ends at a certain distance from it on the other side,
+and in all places between those two limits acts upon the Rays in Lines
+perpendicular to that refracting Plane, and the Actions upon the Rays at
+equal distances from the refracting Plane be equal, and at unequal ones
+either equal or unequal according to any rate whatever; that Motion of
+the Ray which is parallel to the refracting Plane, will suffer no
+Alteration by that Force; and that Motion which is perpendicular to it
+will be altered according to the rule of the foregoing Proposition. If
+therefore for the perpendicular velocity of the emerging Ray CN you
+write MC/NG × CG as above, then the perpendicular velocity of any other
+emerging Ray CE which was AD/EF × CF, will be equal to the square Root
+of CD_q_ + (_MCq/NGq_ × CG_q_). And by squaring these Equals, and adding
+to them the Equals AD_q_ and MC_q_ - CD_q_, and dividing the Sums by the
+Equals CF_q_ + EF_q_ and CG_q_ + NG_q_, you will have _MCq/NGq_ equal to
+_ADq/EFq_. Whence AD, the Sine of Incidence, is to EF the Sine of
+Refraction, as MC to NG, that is, in a given _ratio_. And this
+Demonstration being general, without determining what Light is, or by
+what kind of Force it is refracted, or assuming any thing farther than
+that the refracting Body acts upon the Rays in Lines perpendicular to
+its Surface; I take it to be a very convincing Argument of the full
+truth of this Proposition.
+
+So then, if the _ratio_ of the Sines of Incidence and Refraction of any
+sort of Rays be found in any one case, 'tis given in all cases; and this
+may be readily found by the Method in the following Proposition.
+
+
+_PROP._ VII. THEOR. VI.
+
+_The Perfection of Telescopes is impeded by the different Refrangibility
+of the Rays of Light._
+
+The Imperfection of Telescopes is vulgarly attributed to the spherical
+Figures of the Glasses, and therefore Mathematicians have propounded to
+figure them by the conical Sections. To shew that they are mistaken, I
+have inserted this Proposition; the truth of which will appear by the
+measure of the Refractions of the several sorts of Rays; and these
+measures I thus determine.
+
+In the third Experiment of this first Part, where the refracting Angle
+of the Prism was 62-1/2 Degrees, the half of that Angle 31 deg. 15 min.
+is the Angle of Incidence of the Rays at their going out of the Glass
+into the Air[F]; and the Sine of this Angle is 5188, the Radius being
+10000. When the Axis of this Prism was parallel to the Horizon, and the
+Refraction of the Rays at their Incidence on this Prism equal to that at
+their Emergence out of it, I observed with a Quadrant the Angle which
+the mean refrangible Rays, (that is those which went to the middle of
+the Sun's coloured Image) made with the Horizon, and by this Angle and
+the Sun's altitude observed at the same time, I found the Angle which
+the emergent Rays contained with the incident to be 44 deg. and 40 min.
+and the half of this Angle added to the Angle of Incidence 31 deg. 15
+min. makes the Angle of Refraction, which is therefore 53 deg. 35 min.
+and its Sine 8047. These are the Sines of Incidence and Refraction of
+the mean refrangible Rays, and their Proportion in round Numbers is 20
+to 31. This Glass was of a Colour inclining to green. The last of the
+Prisms mentioned in the third Experiment was of clear white Glass. Its
+refracting Angle 63-1/2 Degrees. The Angle which the emergent Rays
+contained, with the incident 45 deg. 50 min. The Sine of half the first
+Angle 5262. The Sine of half the Sum of the Angles 8157. And their
+Proportion in round Numbers 20 to 31, as before.
+
+From the Length of the Image, which was about 9-3/4 or 10 Inches,
+subduct its Breadth, which was 2-1/8 Inches, and the Remainder 7-3/4
+Inches would be the Length of the Image were the Sun but a Point, and
+therefore subtends the Angle which the most and least refrangible Rays,
+when incident on the Prism in the same Lines, do contain with one
+another after their Emergence. Whence this Angle is 2 deg. 0´. 7´´. For
+the distance between the Image and the Prism where this Angle is made,
+was 18-1/2 Feet, and at that distance the Chord 7-3/4 Inches subtends an
+Angle of 2 deg. 0´. 7´´. Now half this Angle is the Angle which these
+emergent Rays contain with the emergent mean refrangible Rays, and a
+quarter thereof, that is 30´. 2´´. may be accounted the Angle which they
+would contain with the same emergent mean refrangible Rays, were they
+co-incident to them within the Glass, and suffered no other Refraction
+than that at their Emergence. For, if two equal Refractions, the one at
+the Incidence of the Rays on the Prism, the other at their Emergence,
+make half the Angle 2 deg. 0´. 7´´. then one of those Refractions will
+make about a quarter of that Angle, and this quarter added to, and
+subducted from the Angle of Refraction of the mean refrangible Rays,
+which was 53 deg. 35´, gives the Angles of Refraction of the most and
+least refrangible Rays 54 deg. 5´ 2´´, and 53 deg. 4´ 58´´, whose Sines
+are 8099 and 7995, the common Angle of Incidence being 31 deg. 15´, and
+its Sine 5188; and these Sines in the least round Numbers are in
+proportion to one another, as 78 and 77 to 50.
+
+Now, if you subduct the common Sine of Incidence 50 from the Sines of
+Refraction 77 and 78, the Remainders 27 and 28 shew, that in small
+Refractions the Refraction of the least refrangible Rays is to the
+Refraction of the most refrangible ones, as 27 to 28 very nearly, and
+that the difference of the Refractions of the least refrangible and most
+refrangible Rays is about the 27-1/2th Part of the whole Refraction of
+the mean refrangible Rays.
+
+Whence they that are skilled in Opticks will easily understand,[G] that
+the Breadth of the least circular Space, into which Object-glasses of
+Telescopes can collect all sorts of Parallel Rays, is about the 27-1/2th
+Part of half the Aperture of the Glass, or 55th Part of the whole
+Aperture; and that the Focus of the most refrangible Rays is nearer to
+the Object-glass than the Focus of the least refrangible ones, by about
+the 27-1/2th Part of the distance between the Object-glass and the Focus
+of the mean refrangible ones.
+
+And if Rays of all sorts, flowing from any one lucid Point in the Axis
+of any convex Lens, be made by the Refraction of the Lens to converge to
+Points not too remote from the Lens, the Focus of the most refrangible
+Rays shall be nearer to the Lens than the Focus of the least refrangible
+ones, by a distance which is to the 27-1/2th Part of the distance of the
+Focus of the mean refrangible Rays from the Lens, as the distance
+between that Focus and the lucid Point, from whence the Rays flow, is to
+the distance between that lucid Point and the Lens very nearly.
+
+Now to examine whether the Difference between the Refractions, which the
+most refrangible and the least refrangible Rays flowing from the same
+Point suffer in the Object-glasses of Telescopes and such-like Glasses,
+be so great as is here described, I contrived the following Experiment.
+
+_Exper._ 16. The Lens which I used in the second and eighth Experiments,
+being placed six Feet and an Inch distant from any Object, collected the
+Species of that Object by the mean refrangible Rays at the distance of
+six Feet and an Inch from the Lens on the other side. And therefore by
+the foregoing Rule, it ought to collect the Species of that Object by
+the least refrangible Rays at the distance of six Feet and 3-2/3 Inches
+from the Lens, and by the most refrangible ones at the distance of five
+Feet and 10-1/3 Inches from it: So that between the two Places, where
+these least and most refrangible Rays collect the Species, there may be
+the distance of about 5-1/3 Inches. For by that Rule, as six Feet and an
+Inch (the distance of the Lens from the lucid Object) is to twelve Feet
+and two Inches (the distance of the lucid Object from the Focus of the
+mean refrangible Rays) that is, as One is to Two; so is the 27-1/2th
+Part of six Feet and an Inch (the distance between the Lens and the same
+Focus) to the distance between the Focus of the most refrangible Rays
+and the Focus of the least refrangible ones, which is therefore 5-17/55
+Inches, that is very nearly 5-1/3 Inches. Now to know whether this
+Measure was true, I repeated the second and eighth Experiment with
+coloured Light, which was less compounded than that I there made use of:
+For I now separated the heterogeneous Rays from one another by the
+Method I described in the eleventh Experiment, so as to make a coloured
+Spectrum about twelve or fifteen Times longer than broad. This Spectrum
+I cast on a printed Book, and placing the above-mentioned Lens at the
+distance of six Feet and an Inch from this Spectrum to collect the
+Species of the illuminated Letters at the same distance on the other
+side, I found that the Species of the Letters illuminated with blue were
+nearer to the Lens than those illuminated with deep red by about three
+Inches, or three and a quarter; but the Species of the Letters
+illuminated with indigo and violet appeared so confused and indistinct,
+that I could not read them: Whereupon viewing the Prism, I found it was
+full of Veins running from one end of the Glass to the other; so that
+the Refraction could not be regular. I took another Prism therefore
+which was free from Veins, and instead of the Letters I used two or
+three Parallel black Lines a little broader than the Strokes of the
+Letters, and casting the Colours upon these Lines in such manner, that
+the Lines ran along the Colours from one end of the Spectrum to the
+other, I found that the Focus where the indigo, or confine of this
+Colour and violet cast the Species of the black Lines most distinctly,
+to be about four Inches, or 4-1/4 nearer to the Lens than the Focus,
+where the deepest red cast the Species of the same black Lines most
+distinctly. The violet was so faint and dark, that I could not discern
+the Species of the Lines distinctly by that Colour; and therefore
+considering that the Prism was made of a dark coloured Glass inclining
+to green, I took another Prism of clear white Glass; but the Spectrum of
+Colours which this Prism made had long white Streams of faint Light
+shooting out from both ends of the Colours, which made me conclude that
+something was amiss; and viewing the Prism, I found two or three little
+Bubbles in the Glass, which refracted the Light irregularly. Wherefore I
+covered that Part of the Glass with black Paper, and letting the Light
+pass through another Part of it which was free from such Bubbles, the
+Spectrum of Colours became free from those irregular Streams of Light,
+and was now such as I desired. But still I found the violet so dark and
+faint, that I could scarce see the Species of the Lines by the violet,
+and not at all by the deepest Part of it, which was next the end of the
+Spectrum. I suspected therefore, that this faint and dark Colour might
+be allayed by that scattering Light which was refracted, and reflected
+irregularly, partly by some very small Bubbles in the Glasses, and
+partly by the Inequalities of their Polish; which Light, tho' it was but
+little, yet it being of a white Colour, might suffice to affect the
+Sense so strongly as to disturb the Phænomena of that weak and dark
+Colour the violet, and therefore I tried, as in the 12th, 13th, and 14th
+Experiments, whether the Light of this Colour did not consist of a
+sensible Mixture of heterogeneous Rays, but found it did not. Nor did
+the Refractions cause any other sensible Colour than violet to emerge
+out of this Light, as they would have done out of white Light, and by
+consequence out of this violet Light had it been sensibly compounded
+with white Light. And therefore I concluded, that the reason why I could
+not see the Species of the Lines distinctly by this Colour, was only
+the Darkness of this Colour, and Thinness of its Light, and its distance
+from the Axis of the Lens; I divided therefore those Parallel black
+Lines into equal Parts, by which I might readily know the distances of
+the Colours in the Spectrum from one another, and noted the distances of
+the Lens from the Foci of such Colours, as cast the Species of the Lines
+distinctly, and then considered whether the difference of those
+distances bear such proportion to 5-1/3 Inches, the greatest Difference
+of the distances, which the Foci of the deepest red and violet ought to
+have from the Lens, as the distance of the observed Colours from one
+another in the Spectrum bear to the greatest distance of the deepest red
+and violet measured in the Rectilinear Sides of the Spectrum, that is,
+to the Length of those Sides, or Excess of the Length of the Spectrum
+above its Breadth. And my Observations were as follows.
+
+When I observed and compared the deepest sensible red, and the Colour in
+the Confine of green and blue, which at the Rectilinear Sides of the
+Spectrum was distant from it half the Length of those Sides, the Focus
+where the Confine of green and blue cast the Species of the Lines
+distinctly on the Paper, was nearer to the Lens than the Focus, where
+the red cast those Lines distinctly on it by about 2-1/2 or 2-3/4
+Inches. For sometimes the Measures were a little greater, sometimes a
+little less, but seldom varied from one another above 1/3 of an Inch.
+For it was very difficult to define the Places of the Foci, without some
+little Errors. Now, if the Colours distant half the Length of the
+Image, (measured at its Rectilinear Sides) give 2-1/2 or 2-3/4
+Difference of the distances of their Foci from the Lens, then the
+Colours distant the whole Length ought to give 5 or 5-1/2 Inches
+difference of those distances.
+
+But here it's to be noted, that I could not see the red to the full end
+of the Spectrum, but only to the Center of the Semicircle which bounded
+that end, or a little farther; and therefore I compared this red not
+with that Colour which was exactly in the middle of the Spectrum, or
+Confine of green and blue, but with that which verged a little more to
+the blue than to the green: And as I reckoned the whole Length of the
+Colours not to be the whole Length of the Spectrum, but the Length of
+its Rectilinear Sides, so compleating the semicircular Ends into
+Circles, when either of the observed Colours fell within those Circles,
+I measured the distance of that Colour from the semicircular End of the
+Spectrum, and subducting half this distance from the measured distance
+of the two Colours, I took the Remainder for their corrected distance;
+and in these Observations set down this corrected distance for the
+difference of the distances of their Foci from the Lens. For, as the
+Length of the Rectilinear Sides of the Spectrum would be the whole
+Length of all the Colours, were the Circles of which (as we shewed) that
+Spectrum consists contracted and reduced to Physical Points, so in that
+Case this corrected distance would be the real distance of the two
+observed Colours.
+
+When therefore I farther observed the deepest sensible red, and that
+blue whose corrected distance from it was 7/12 Parts of the Length of
+the Rectilinear Sides of the Spectrum, the difference of the distances
+of their Foci from the Lens was about 3-1/4 Inches, and as 7 to 12, so
+is 3-1/4 to 5-4/7.
+
+When I observed the deepest sensible red, and that indigo whose
+corrected distance was 8/12 or 2/3 of the Length of the Rectilinear
+Sides of the Spectrum, the difference of the distances of their Foci
+from the Lens, was about 3-2/3 Inches, and as 2 to 3, so is 3-2/3 to
+5-1/2.
+
+When I observed the deepest sensible red, and that deep indigo whose
+corrected distance from one another was 9/12 or 3/4 of the Length of the
+Rectilinear Sides of the Spectrum, the difference of the distances of
+their Foci from the Lens was about 4 Inches; and as 3 to 4, so is 4 to
+5-1/3.
+
+When I observed the deepest sensible red, and that Part of the violet
+next the indigo, whose corrected distance from the red was 10/12 or 5/6
+of the Length of the Rectilinear Sides of the Spectrum, the difference
+of the distances of their Foci from the Lens was about 4-1/2 Inches, and
+as 5 to 6, so is 4-1/2 to 5-2/5. For sometimes, when the Lens was
+advantageously placed, so that its Axis respected the blue, and all
+Things else were well ordered, and the Sun shone clear, and I held my
+Eye very near to the Paper on which the Lens cast the Species of the
+Lines, I could see pretty distinctly the Species of those Lines by that
+Part of the violet which was next the indigo; and sometimes I could see
+them by above half the violet, For in making these Experiments I had
+observed, that the Species of those Colours only appear distinct, which
+were in or near the Axis of the Lens: So that if the blue or indigo were
+in the Axis, I could see their Species distinctly; and then the red
+appeared much less distinct than before. Wherefore I contrived to make
+the Spectrum of Colours shorter than before, so that both its Ends might
+be nearer to the Axis of the Lens. And now its Length was about 2-1/2
+Inches, and Breadth about 1/5 or 1/6 of an Inch. Also instead of the
+black Lines on which the Spectrum was cast, I made one black Line
+broader than those, that I might see its Species more easily; and this
+Line I divided by short cross Lines into equal Parts, for measuring the
+distances of the observed Colours. And now I could sometimes see the
+Species of this Line with its Divisions almost as far as the Center of
+the semicircular violet End of the Spectrum, and made these farther
+Observations.
+
+When I observed the deepest sensible red, and that Part of the violet,
+whose corrected distance from it was about 8/9 Parts of the Rectilinear
+Sides of the Spectrum, the Difference of the distances of the Foci of
+those Colours from the Lens, was one time 4-2/3, another time 4-3/4,
+another time 4-7/8 Inches; and as 8 to 9, so are 4-2/3, 4-3/4, 4-7/8, to
+5-1/4, 5-11/32, 5-31/64 respectively.
+
+When I observed the deepest sensible red, and deepest sensible violet,
+(the corrected distance of which Colours, when all Things were ordered
+to the best Advantage, and the Sun shone very clear, was about 11/12 or
+15/16 Parts of the Length of the Rectilinear Sides of the coloured
+Spectrum) I found the Difference of the distances of their Foci from the
+Lens sometimes 4-3/4 sometimes 5-1/4, and for the most part 5 Inches or
+thereabouts; and as 11 to 12, or 15 to 16, so is five Inches to 5-2/2 or
+5-1/3 Inches.
+
+And by this Progression of Experiments I satisfied my self, that had the
+Light at the very Ends of the Spectrum been strong enough to make the
+Species of the black Lines appear plainly on the Paper, the Focus of the
+deepest violet would have been found nearer to the Lens, than the Focus
+of the deepest red, by about 5-1/3 Inches at least. And this is a
+farther Evidence, that the Sines of Incidence and Refraction of the
+several sorts of Rays, hold the same Proportion to one another in the
+smallest Refractions which they do in the greatest.
+
+My Progress in making this nice and troublesome Experiment I have set
+down more at large, that they that shall try it after me may be aware of
+the Circumspection requisite to make it succeed well. And if they cannot
+make it succeed so well as I did, they may notwithstanding collect by
+the Proportion of the distance of the Colours of the Spectrum, to the
+Difference of the distances of their Foci from the Lens, what would be
+the Success in the more distant Colours by a better trial. And yet, if
+they use a broader Lens than I did, and fix it to a long strait Staff,
+by means of which it may be readily and truly directed to the Colour
+whose Focus is desired, I question not but the Experiment will succeed
+better with them than it did with me. For I directed the Axis as nearly
+as I could to the middle of the Colours, and then the faint Ends of the
+Spectrum being remote from the Axis, cast their Species less distinctly
+on the Paper than they would have done, had the Axis been successively
+directed to them.
+
+Now by what has been said, it's certain that the Rays which differ in
+Refrangibility do not converge to the same Focus; but if they flow from
+a lucid Point, as far from the Lens on one side as their Foci are on the
+other, the Focus of the most refrangible Rays shall be nearer to the
+Lens than that of the least refrangible, by above the fourteenth Part of
+the whole distance; and if they flow from a lucid Point, so very remote
+from the Lens, that before their Incidence they may be accounted
+parallel, the Focus of the most refrangible Rays shall be nearer to the
+Lens than the Focus of the least refrangible, by about the 27th or 28th
+Part of their whole distance from it. And the Diameter of the Circle in
+the middle Space between those two Foci which they illuminate, when they
+fall there on any Plane, perpendicular to the Axis (which Circle is the
+least into which they can all be gathered) is about the 55th Part of the
+Diameter of the Aperture of the Glass. So that 'tis a wonder, that
+Telescopes represent Objects so distinct as they do. But were all the
+Rays of Light equally refrangible, the Error arising only from the
+Sphericalness of the Figures of Glasses would be many hundred times
+less. For, if the Object-glass of a Telescope be Plano-convex, and the
+Plane side be turned towards the Object, and the Diameter of the
+Sphere, whereof this Glass is a Segment, be called D, and the
+Semi-diameter of the Aperture of the Glass be called S, and the Sine of
+Incidence out of Glass into Air, be to the Sine of Refraction as I to R;
+the Rays which come parallel to the Axis of the Glass, shall in the
+Place where the Image of the Object is most distinctly made, be
+scattered all over a little Circle, whose Diameter is _(Rq/Iq) × (S
+cub./D quad.)_ very nearly,[H] as I gather by computing the Errors of
+the Rays by the Method of infinite Series, and rejecting the Terms,
+whose Quantities are inconsiderable. As for instance, if the Sine of
+Incidence I, be to the Sine of Refraction R, as 20 to 31, and if D the
+Diameter of the Sphere, to which the Convex-side of the Glass is ground,
+be 100 Feet or 1200 Inches, and S the Semi-diameter of the Aperture be
+two Inches, the Diameter of the little Circle, (that is (_Rq × S
+cub.)/(Iq × D quad._)) will be (31 × 31 × 8)/(20 × 20 × 1200 × 1200) (or
+961/72000000) Parts of an Inch. But the Diameter of the little Circle,
+through which these Rays are scattered by unequal Refrangibility, will
+be about the 55th Part of the Aperture of the Object-glass, which here
+is four Inches. And therefore, the Error arising from the Spherical
+Figure of the Glass, is to the Error arising from the different
+Refrangibility of the Rays, as 961/72000000 to 4/55, that is as 1 to
+5449; and therefore being in comparison so very little, deserves not to
+be considered.
+
+[Illustration: FIG. 27.]
+
+But you will say, if the Errors caused by the different Refrangibility
+be so very great, how comes it to pass, that Objects appear through
+Telescopes so distinct as they do? I answer, 'tis because the erring
+Rays are not scattered uniformly over all that Circular Space, but
+collected infinitely more densely in the Center than in any other Part
+of the Circle, and in the Way from the Center to the Circumference, grow
+continually rarer and rarer, so as at the Circumference to become
+infinitely rare; and by reason of their Rarity are not strong enough to
+be visible, unless in the Center and very near it. Let ADE [in _Fig._
+27.] represent one of those Circles described with the Center C, and
+Semi-diameter AC, and let BFG be a smaller Circle concentrick to the
+former, cutting with its Circumference the Diameter AC in B, and bisect
+AC in N; and by my reckoning, the Density of the Light in any Place B,
+will be to its Density in N, as AB to BC; and the whole Light within the
+lesser Circle BFG, will be to the whole Light within the greater AED, as
+the Excess of the Square of AC above the Square of AB, is to the Square
+of AC. As if BC be the fifth Part of AC, the Light will be four times
+denser in B than in N, and the whole Light within the less Circle, will
+be to the whole Light within the greater, as nine to twenty-five. Whence
+it's evident, that the Light within the less Circle, must strike the
+Sense much more strongly, than that faint and dilated Light round about
+between it and the Circumference of the greater.
+
+But it's farther to be noted, that the most luminous of the Prismatick
+Colours are the yellow and orange. These affect the Senses more strongly
+than all the rest together, and next to these in strength are the red
+and green. The blue compared with these is a faint and dark Colour, and
+the indigo and violet are much darker and fainter, so that these
+compared with the stronger Colours are little to be regarded. The Images
+of Objects are therefore to be placed, not in the Focus of the mean
+refrangible Rays, which are in the Confine of green and blue, but in the
+Focus of those Rays which are in the middle of the orange and yellow;
+there where the Colour is most luminous and fulgent, that is in the
+brightest yellow, that yellow which inclines more to orange than to
+green. And by the Refraction of these Rays (whose Sines of Incidence and
+Refraction in Glass are as 17 and 11) the Refraction of Glass and
+Crystal for Optical Uses is to be measured. Let us therefore place the
+Image of the Object in the Focus of these Rays, and all the yellow and
+orange will fall within a Circle, whose Diameter is about the 250th
+Part of the Diameter of the Aperture of the Glass. And if you add the
+brighter half of the red, (that half which is next the orange) and the
+brighter half of the green, (that half which is next the yellow) about
+three fifth Parts of the Light of these two Colours will fall within the
+same Circle, and two fifth Parts will fall without it round about; and
+that which falls without will be spread through almost as much more
+space as that which falls within, and so in the gross be almost three
+times rarer. Of the other half of the red and green, (that is of the
+deep dark red and willow green) about one quarter will fall within this
+Circle, and three quarters without, and that which falls without will be
+spread through about four or five times more space than that which falls
+within; and so in the gross be rarer, and if compared with the whole
+Light within it, will be about 25 times rarer than all that taken in the
+gross; or rather more than 30 or 40 times rarer, because the deep red in
+the end of the Spectrum of Colours made by a Prism is very thin and
+rare, and the willow green is something rarer than the orange and
+yellow. The Light of these Colours therefore being so very much rarer
+than that within the Circle, will scarce affect the Sense, especially
+since the deep red and willow green of this Light, are much darker
+Colours than the rest. And for the same reason the blue and violet being
+much darker Colours than these, and much more rarified, may be
+neglected. For the dense and bright Light of the Circle, will obscure
+the rare and weak Light of these dark Colours round about it, and
+render them almost insensible. The sensible Image of a lucid Point is
+therefore scarce broader than a Circle, whose Diameter is the 250th Part
+of the Diameter of the Aperture of the Object-glass of a good Telescope,
+or not much broader, if you except a faint and dark misty Light round
+about it, which a Spectator will scarce regard. And therefore in a
+Telescope, whose Aperture is four Inches, and Length an hundred Feet, it
+exceeds not 2´´ 45´´´, or 3´´. And in a Telescope whose Aperture is two
+Inches, and Length 20 or 30 Feet, it may be 5´´ or 6´´, and scarce
+above. And this answers well to Experience: For some Astronomers have
+found the Diameters of the fix'd Stars, in Telescopes of between 20 and
+60 Feet in length, to be about 5´´ or 6´´, or at most 8´´ or 10´´ in
+diameter. But if the Eye-Glass be tincted faintly with the Smoak of a
+Lamp or Torch, to obscure the Light of the Star, the fainter Light in
+the Circumference of the Star ceases to be visible, and the Star (if the
+Glass be sufficiently soiled with Smoak) appears something more like a
+mathematical Point. And for the same Reason, the enormous Part of the
+Light in the Circumference of every lucid Point ought to be less
+discernible in shorter Telescopes than in longer, because the shorter
+transmit less Light to the Eye.
+
+Now, that the fix'd Stars, by reason of their immense Distance, appear
+like Points, unless so far as their Light is dilated by Refraction, may
+appear from hence; that when the Moon passes over them and eclipses
+them, their Light vanishes, not gradually like that of the Planets, but
+all at once; and in the end of the Eclipse it returns into Sight all at
+once, or certainly in less time than the second of a Minute; the
+Refraction of the Moon's Atmosphere a little protracting the time in
+which the Light of the Star first vanishes, and afterwards returns into
+Sight.
+
+Now, if we suppose the sensible Image of a lucid Point, to be even 250
+times narrower than the Aperture of the Glass; yet this Image would be
+still much greater than if it were only from the spherical Figure of the
+Glass. For were it not for the different Refrangibility of the Rays, its
+breadth in an 100 Foot Telescope whose aperture is 4 Inches, would be
+but 961/72000000 parts of an Inch, as is manifest by the foregoing
+Computation. And therefore in this case the greatest Errors arising from
+the spherical Figure of the Glass, would be to the greatest sensible
+Errors arising from the different Refrangibility of the Rays as
+961/72000000 to 4/250 at most, that is only as 1 to 1200. And this
+sufficiently shews that it is not the spherical Figures of Glasses, but
+the different Refrangibility of the Rays which hinders the perfection of
+Telescopes.
+
+There is another Argument by which it may appear that the different
+Refrangibility of Rays, is the true cause of the imperfection of
+Telescopes. For the Errors of the Rays arising from the spherical
+Figures of Object-glasses, are as the Cubes of the Apertures of the
+Object Glasses; and thence to make Telescopes of various Lengths magnify
+with equal distinctness, the Apertures of the Object-glasses, and the
+Charges or magnifying Powers ought to be as the Cubes of the square
+Roots of their lengths; which doth not answer to Experience. But the
+Errors of the Rays arising from the different Refrangibility, are as the
+Apertures of the Object-glasses; and thence to make Telescopes of
+various lengths, magnify with equal distinctness, their Apertures and
+Charges ought to be as the square Roots of their lengths; and this
+answers to Experience, as is well known. For Instance, a Telescope of 64
+Feet in length, with an Aperture of 2-2/3 Inches, magnifies about 120
+times, with as much distinctness as one of a Foot in length, with 1/3 of
+an Inch aperture, magnifies 15 times.
+
+[Illustration: FIG. 28.]
+
+Now were it not for this different Refrangibility of Rays, Telescopes
+might be brought to a greater perfection than we have yet describ'd, by
+composing the Object-glass of two Glasses with Water between them. Let
+ADFC [in _Fig._ 28.] represent the Object-glass composed of two Glasses
+ABED and BEFC, alike convex on the outsides AGD and CHF, and alike
+concave on the insides BME, BNE, with Water in the concavity BMEN. Let
+the Sine of Incidence out of Glass into Air be as I to R, and out of
+Water into Air, as K to R, and by consequence out of Glass into Water,
+as I to K: and let the Diameter of the Sphere to which the convex sides
+AGD and CHF are ground be D, and the Diameter of the Sphere to which the
+concave sides BME and BNE, are ground be to D, as the Cube Root of
+KK--KI to the Cube Root of RK--RI: and the Refractions on the concave
+sides of the Glasses, will very much correct the Errors of the
+Refractions on the convex sides, so far as they arise from the
+sphericalness of the Figure. And by this means might Telescopes be
+brought to sufficient perfection, were it not for the different
+Refrangibility of several sorts of Rays. But by reason of this different
+Refrangibility, I do not yet see any other means of improving Telescopes
+by Refractions alone, than that of increasing their lengths, for which
+end the late Contrivance of _Hugenius_ seems well accommodated. For very
+long Tubes are cumbersome, and scarce to be readily managed, and by
+reason of their length are very apt to bend, and shake by bending, so as
+to cause a continual trembling in the Objects, whereby it becomes
+difficult to see them distinctly: whereas by his Contrivance the Glasses
+are readily manageable, and the Object-glass being fix'd upon a strong
+upright Pole becomes more steady.
+
+Seeing therefore the Improvement of Telescopes of given lengths by
+Refractions is desperate; I contrived heretofore a Perspective by
+Reflexion, using instead of an Object-glass a concave Metal. The
+diameter of the Sphere to which the Metal was ground concave was about
+25 _English_ Inches, and by consequence the length of the Instrument
+about six Inches and a quarter. The Eye-glass was Plano-convex, and the
+diameter of the Sphere to which the convex side was ground was about 1/5
+of an Inch, or a little less, and by consequence it magnified between 30
+and 40 times. By another way of measuring I found that it magnified
+about 35 times. The concave Metal bore an Aperture of an Inch and a
+third part; but the Aperture was limited not by an opake Circle,
+covering the Limb of the Metal round about, but by an opake Circle
+placed between the Eyeglass and the Eye, and perforated in the middle
+with a little round hole for the Rays to pass through to the Eye. For
+this Circle by being placed here, stopp'd much of the erroneous Light,
+which otherwise would have disturbed the Vision. By comparing it with a
+pretty good Perspective of four Feet in length, made with a concave
+Eye-glass, I could read at a greater distance with my own Instrument
+than with the Glass. Yet Objects appeared much darker in it than in the
+Glass, and that partly because more Light was lost by Reflexion in the
+Metal, than by Refraction in the Glass, and partly because my Instrument
+was overcharged. Had it magnified but 30 or 25 times, it would have made
+the Object appear more brisk and pleasant. Two of these I made about 16
+Years ago, and have one of them still by me, by which I can prove the
+truth of what I write. Yet it is not so good as at the first. For the
+concave has been divers times tarnished and cleared again, by rubbing
+it with very soft Leather. When I made these an Artist in _London_
+undertook to imitate it; but using another way of polishing them than I
+did, he fell much short of what I had attained to, as I afterwards
+understood by discoursing the Under-workman he had employed. The Polish
+I used was in this manner. I had two round Copper Plates, each six
+Inches in Diameter, the one convex, the other concave, ground very true
+to one another. On the convex I ground the Object-Metal or Concave which
+was to be polish'd, 'till it had taken the Figure of the Convex and was
+ready for a Polish. Then I pitched over the convex very thinly, by
+dropping melted Pitch upon it, and warming it to keep the Pitch soft,
+whilst I ground it with the concave Copper wetted to make it spread
+eavenly all over the convex. Thus by working it well I made it as thin
+as a Groat, and after the convex was cold I ground it again to give it
+as true a Figure as I could. Then I took Putty which I had made very
+fine by washing it from all its grosser Particles, and laying a little
+of this upon the Pitch, I ground it upon the Pitch with the concave
+Copper, till it had done making a Noise; and then upon the Pitch I
+ground the Object-Metal with a brisk motion, for about two or three
+Minutes of time, leaning hard upon it. Then I put fresh Putty upon the
+Pitch, and ground it again till it had done making a noise, and
+afterwards ground the Object-Metal upon it as before. And this Work I
+repeated till the Metal was polished, grinding it the last time with all
+my strength for a good while together, and frequently breathing upon
+the Pitch, to keep it moist without laying on any more fresh Putty. The
+Object-Metal was two Inches broad, and about one third part of an Inch
+thick, to keep it from bending. I had two of these Metals, and when I
+had polished them both, I tried which was best, and ground the other
+again, to see if I could make it better than that which I kept. And thus
+by many Trials I learn'd the way of polishing, till I made those two
+reflecting Perspectives I spake of above. For this Art of polishing will
+be better learn'd by repeated Practice than by my Description. Before I
+ground the Object-Metal on the Pitch, I always ground the Putty on it
+with the concave Copper, till it had done making a noise, because if the
+Particles of the Putty were not by this means made to stick fast in the
+Pitch, they would by rolling up and down grate and fret the Object-Metal
+and fill it full of little holes.
+
+But because Metal is more difficult to polish than Glass, and is
+afterwards very apt to be spoiled by tarnishing, and reflects not so
+much Light as Glass quick-silver'd over does: I would propound to use
+instead of the Metal, a Glass ground concave on the foreside, and as
+much convex on the backside, and quick-silver'd over on the convex side.
+The Glass must be every where of the same thickness exactly. Otherwise
+it will make Objects look colour'd and indistinct. By such a Glass I
+tried about five or six Years ago to make a reflecting Telescope of four
+Feet in length to magnify about 150 times, and I satisfied my self that
+there wants nothing but a good Artist to bring the Design to
+perfection. For the Glass being wrought by one of our _London_ Artists
+after such a manner as they grind Glasses for Telescopes, though it
+seemed as well wrought as the Object-glasses use to be, yet when it was
+quick-silver'd, the Reflexion discovered innumerable Inequalities all
+over the Glass. And by reason of these Inequalities, Objects appeared
+indistinct in this Instrument. For the Errors of reflected Rays caused
+by any Inequality of the Glass, are about six times greater than the
+Errors of refracted Rays caused by the like Inequalities. Yet by this
+Experiment I satisfied my self that the Reflexion on the concave side of
+the Glass, which I feared would disturb the Vision, did no sensible
+prejudice to it, and by consequence that nothing is wanting to perfect
+these Telescopes, but good Workmen who can grind and polish Glasses
+truly spherical. An Object-glass of a fourteen Foot Telescope, made by
+an Artificer at _London_, I once mended considerably, by grinding it on
+Pitch with Putty, and leaning very easily on it in the grinding, lest
+the Putty should scratch it. Whether this way may not do well enough for
+polishing these reflecting Glasses, I have not yet tried. But he that
+shall try either this or any other way of polishing which he may think
+better, may do well to make his Glasses ready for polishing, by grinding
+them without that Violence, wherewith our _London_ Workmen press their
+Glasses in grinding. For by such violent pressure, Glasses are apt to
+bend a little in the grinding, and such bending will certainly spoil
+their Figure. To recommend therefore the consideration of these
+reflecting Glasses to such Artists as are curious in figuring Glasses, I
+shall describe this optical Instrument in the following Proposition.
+
+
+_PROP._ VIII. PROB. II.
+
+_To shorten Telescopes._
+
+Let ABCD [in _Fig._ 29.] represent a Glass spherically concave on the
+foreside AB, and as much convex on the backside CD, so that it be every
+where of an equal thickness. Let it not be thicker on one side than on
+the other, lest it make Objects appear colour'd and indistinct, and let
+it be very truly wrought and quick-silver'd over on the backside; and
+set in the Tube VXYZ which must be very black within. Let EFG represent
+a Prism of Glass or Crystal placed near the other end of the Tube, in
+the middle of it, by means of a handle of Brass or Iron FGK, to the end
+of which made flat it is cemented. Let this Prism be rectangular at E,
+and let the other two Angles at F and G be accurately equal to each
+other, and by consequence equal to half right ones, and let the plane
+sides FE and GE be square, and by consequence the third side FG a
+rectangular Parallelogram, whose length is to its breadth in a
+subduplicate proportion of two to one. Let it be so placed in the Tube,
+that the Axis of the Speculum may pass through the middle of the square
+side EF perpendicularly and by consequence through the middle of the
+side FG at an Angle of 45 Degrees, and let the side EF be turned towards
+the Speculum, and the distance of this Prism from the Speculum be such
+that the Rays of the Light PQ, RS, &c. which are incident upon the
+Speculum in Lines parallel to the Axis thereof, may enter the Prism at
+the side EF, and be reflected by the side FG, and thence go out of it
+through the side GE, to the Point T, which must be the common Focus of
+the Speculum ABDC, and of a Plano-convex Eye-glass H, through which
+those Rays must pass to the Eye. And let the Rays at their coming out of
+the Glass pass through a small round hole, or aperture made in a little
+plate of Lead, Brass, or Silver, wherewith the Glass is to be covered,
+which hole must be no bigger than is necessary for Light enough to pass
+through. For so it will render the Object distinct, the Plate in which
+'tis made intercepting all the erroneous part of the Light which comes
+from the verges of the Speculum AB. Such an Instrument well made, if it
+be six Foot long, (reckoning the length from the Speculum to the Prism,
+and thence to the Focus T) will bear an aperture of six Inches at the
+Speculum, and magnify between two and three hundred times. But the hole
+H here limits the aperture with more advantage, than if the aperture was
+placed at the Speculum. If the Instrument be made longer or shorter, the
+aperture must be in proportion as the Cube of the square-square Root of
+the length, and the magnifying as the aperture. But it's convenient that
+the Speculum be an Inch or two broader than the aperture at the least,
+and that the Glass of the Speculum be thick, that it bend not in the
+working. The Prism EFG must be no bigger than is necessary, and its back
+side FG must not be quick-silver'd over. For without quicksilver it will
+reflect all the Light incident on it from the Speculum.
+
+[Illustration: FIG. 29.]
+
+In this Instrument the Object will be inverted, but may be erected by
+making the square sides FF and EG of the Prism EFG not plane but
+spherically convex, that the Rays may cross as well before they come at
+it as afterwards between it and the Eye-glass. If it be desired that the
+Instrument bear a larger aperture, that may be also done by composing
+the Speculum of two Glasses with Water between them.
+
+If the Theory of making Telescopes could at length be fully brought into
+Practice, yet there would be certain Bounds beyond which Telescopes
+could not perform. For the Air through which we look upon the Stars, is
+in a perpetual Tremor; as may be seen by the tremulous Motion of Shadows
+cast from high Towers, and by the twinkling of the fix'd Stars. But
+these Stars do not twinkle when viewed through Telescopes which have
+large apertures. For the Rays of Light which pass through divers parts
+of the aperture, tremble each of them apart, and by means of their
+various and sometimes contrary Tremors, fall at one and the same time
+upon different points in the bottom of the Eye, and their trembling
+Motions are too quick and confused to be perceived severally. And all
+these illuminated Points constitute one broad lucid Point, composed of
+those many trembling Points confusedly and insensibly mixed with one
+another by very short and swift Tremors, and thereby cause the Star to
+appear broader than it is, and without any trembling of the whole. Long
+Telescopes may cause Objects to appear brighter and larger than short
+ones can do, but they cannot be so formed as to take away that confusion
+of the Rays which arises from the Tremors of the Atmosphere. The only
+Remedy is a most serene and quiet Air, such as may perhaps be found on
+the tops of the highest Mountains above the grosser Clouds.
+
+FOOTNOTES:
+
+[C] _See our_ Author's Lectiones Opticæ § 10. _Sect. II. § 29. and Sect.
+III. Prop. 25._
+
+[D] See our Author's _Lectiones Opticæ_, Part. I. Sect. 1. §5.
+
+[E] _This is very fully treated of in our_ Author's Lect. Optic. _Part_
+I. _Sect._ II.
+
+[F] _See our_ Author's Lect. Optic. Part I. Sect. II. § 29.
+
+[G] _This is demonstrated in our_ Author's Lect. Optic. _Part_ I.
+_Sect._ IV. _Prop._ 37.
+
+[H] _How to do this, is shewn in our_ Author's Lect. Optic. _Part_ I.
+_Sect._ IV. _Prop._ 31.
+
+
+
+
+THE FIRST BOOK OF OPTICKS
+
+
+
+
+_PART II._
+
+
+_PROP._ I. THEOR. I.
+
+_The Phænomena of Colours in refracted or reflected Light are not caused
+by new Modifications of the Light variously impress'd, according to the
+various Terminations of the Light and Shadow_.
+
+The PROOF by Experiments.
+
+_Exper._ 1. For if the Sun shine into a very dark Chamber through an
+oblong hole F, [in _Fig._ 1.] whose breadth is the sixth or eighth part
+of an Inch, or something less; and his beam FH do afterwards pass first
+through a very large Prism ABC, distant about 20 Feet from the hole, and
+parallel to it, and then (with its white part) through an oblong hole H,
+whose breadth is about the fortieth or sixtieth part of an Inch, and
+which is made in a black opake Body GI, and placed at the distance of
+two or three Feet from the Prism, in a parallel Situation both to the
+Prism and to the former hole, and if this white Light thus transmitted
+through the hole H, fall afterwards upon a white Paper _pt_, placed
+after that hole H, at the distance of three or four Feet from it, and
+there paint the usual Colours of the Prism, suppose red at _t_, yellow
+at _s_, green at _r_, blue at _q_, and violet at _p_; you may with an
+Iron Wire, or any such like slender opake Body, whose breadth is about
+the tenth part of an Inch, by intercepting the Rays at _k_, _l_, _m_,
+_n_ or _o_, take away any one of the Colours at _t_, _s_, _r_, _q_ or
+_p_, whilst the other Colours remain upon the Paper as before; or with
+an Obstacle something bigger you may take away any two, or three, or
+four Colours together, the rest remaining: So that any one of the
+Colours as well as violet may become outmost in the Confine of the
+Shadow towards _p_, and any one of them as well as red may become
+outmost in the Confine of the Shadow towards _t_, and any one of them
+may also border upon the Shadow made within the Colours by the Obstacle
+R intercepting some intermediate part of the Light; and, lastly, any one
+of them by being left alone, may border upon the Shadow on either hand.
+All the Colours have themselves indifferently to any Confines of Shadow,
+and therefore the differences of these Colours from one another, do not
+arise from the different Confines of Shadow, whereby Light is variously
+modified, as has hitherto been the Opinion of Philosophers. In trying
+these things 'tis to be observed, that by how much the holes F and H are
+narrower, and the Intervals between them and the Prism greater, and the
+Chamber darker, by so much the better doth the Experiment succeed;
+provided the Light be not so far diminished, but that the Colours at
+_pt_ be sufficiently visible. To procure a Prism of solid Glass large
+enough for this Experiment will be difficult, and therefore a prismatick
+Vessel must be made of polish'd Glass Plates cemented together, and
+filled with salt Water or clear Oil.
+
+[Illustration: FIG. 1.]
+
+_Exper._ 2. The Sun's Light let into a dark Chamber through the round
+hole F, [in _Fig._ 2.] half an Inch wide, passed first through the Prism
+ABC placed at the hole, and then through a Lens PT something more than
+four Inches broad, and about eight Feet distant from the Prism, and
+thence converged to O the Focus of the Lens distant from it about three
+Feet, and there fell upon a white Paper DE. If that Paper was
+perpendicular to that Light incident upon it, as 'tis represented in the
+posture DE, all the Colours upon it at O appeared white. But if the
+Paper being turned about an Axis parallel to the Prism, became very much
+inclined to the Light, as 'tis represented in the Positions _de_ and
+_[Greek: de]_; the same Light in the one case appeared yellow and red,
+in the other blue. Here one and the same part of the Light in one and
+the same place, according to the various Inclinations of the Paper,
+appeared in one case white, in another yellow or red, in a third blue,
+whilst the Confine of Light and shadow, and the Refractions of the Prism
+in all these cases remained the same.
+
+[Illustration: FIG. 2.]
+
+[Illustration: FIG. 3.]
+
+_Exper._ 3. Such another Experiment may be more easily tried as follows.
+Let a broad beam of the Sun's Light coming into a dark Chamber through a
+hole in the Window-shut be refracted by a large Prism ABC, [in _Fig._
+3.] whose refracting Angle C is more than 60 Degrees, and so soon as it
+comes out of the Prism, let it fall upon the white Paper DE glewed upon
+a stiff Plane; and this Light, when the Paper is perpendicular to it, as
+'tis represented in DE, will appear perfectly white upon the Paper; but
+when the Paper is very much inclin'd to it in such a manner as to keep
+always parallel to the Axis of the Prism, the whiteness of the whole
+Light upon the Paper will according to the inclination of the Paper this
+way or that way, change either into yellow and red, as in the posture
+_de_, or into blue and violet, as in the posture [Greek: de]. And if the
+Light before it fall upon the Paper be twice refracted the same way by
+two parallel Prisms, these Colours will become the more conspicuous.
+Here all the middle parts of the broad beam of white Light which fell
+upon the Paper, did without any Confine of Shadow to modify it, become
+colour'd all over with one uniform Colour, the Colour being always the
+same in the middle of the Paper as at the edges, and this Colour changed
+according to the various Obliquity of the reflecting Paper, without any
+change in the Refractions or Shadow, or in the Light which fell upon the
+Paper. And therefore these Colours are to be derived from some other
+Cause than the new Modifications of Light by Refractions and Shadows.
+
+If it be asked, what then is their Cause? I answer, That the Paper in
+the posture _de_, being more oblique to the more refrangible Rays than
+to the less refrangible ones, is more strongly illuminated by the latter
+than by the former, and therefore the less refrangible Rays are
+predominant in the reflected Light. And where-ever they are predominant
+in any Light, they tinge it with red or yellow, as may in some measure
+appear by the first Proposition of the first Part of this Book, and will
+more fully appear hereafter. And the contrary happens in the posture of
+the Paper [Greek: de], the more refrangible Rays being then predominant
+which always tinge Light with blues and violets.
+
+_Exper._ 4. The Colours of Bubbles with which Children play are various,
+and change their Situation variously, without any respect to any Confine
+or Shadow. If such a Bubble be cover'd with a concave Glass, to keep it
+from being agitated by any Wind or Motion of the Air, the Colours will
+slowly and regularly change their situation, even whilst the Eye and the
+Bubble, and all Bodies which emit any Light, or cast any Shadow, remain
+unmoved. And therefore their Colours arise from some regular Cause which
+depends not on any Confine of Shadow. What this Cause is will be shewed
+in the next Book.
+
+To these Experiments may be added the tenth Experiment of the first Part
+of this first Book, where the Sun's Light in a dark Room being
+trajected through the parallel Superficies of two Prisms tied together
+in the form of a Parallelopipede, became totally of one uniform yellow
+or red Colour, at its emerging out of the Prisms. Here, in the
+production of these Colours, the Confine of Shadow can have nothing to
+do. For the Light changes from white to yellow, orange and red
+successively, without any alteration of the Confine of Shadow: And at
+both edges of the emerging Light where the contrary Confines of Shadow
+ought to produce different Effects, the Colour is one and the same,
+whether it be white, yellow, orange or red: And in the middle of the
+emerging Light, where there is no Confine of Shadow at all, the Colour
+is the very same as at the edges, the whole Light at its very first
+Emergence being of one uniform Colour, whether white, yellow, orange or
+red, and going on thence perpetually without any change of Colour, such
+as the Confine of Shadow is vulgarly supposed to work in refracted Light
+after its Emergence. Neither can these Colours arise from any new
+Modifications of the Light by Refractions, because they change
+successively from white to yellow, orange and red, while the Refractions
+remain the same, and also because the Refractions are made contrary ways
+by parallel Superficies which destroy one another's Effects. They arise
+not therefore from any Modifications of Light made by Refractions and
+Shadows, but have some other Cause. What that Cause is we shewed above
+in this tenth Experiment, and need not here repeat it.
+
+There is yet another material Circumstance of this Experiment. For this
+emerging Light being by a third Prism HIK [in _Fig._ 22. _Part_ I.][I]
+refracted towards the Paper PT, and there painting the usual Colours of
+the Prism, red, yellow, green, blue, violet: If these Colours arose from
+the Refractions of that Prism modifying the Light, they would not be in
+the Light before its Incidence on that Prism. And yet in that Experiment
+we found, that when by turning the two first Prisms about their common
+Axis all the Colours were made to vanish but the red; the Light which
+makes that red being left alone, appeared of the very same red Colour
+before its Incidence on the third Prism. And in general we find by other
+Experiments, that when the Rays which differ in Refrangibility are
+separated from one another, and any one Sort of them is considered
+apart, the Colour of the Light which they compose cannot be changed by
+any Refraction or Reflexion whatever, as it ought to be were Colours
+nothing else than Modifications of Light caused by Refractions, and
+Reflexions, and Shadows. This Unchangeableness of Colour I am now to
+describe in the following Proposition.
+
+
+_PROP._ II. THEOR. II.
+
+_All homogeneal Light has its proper Colour answering to its Degree of
+Refrangibility, and that Colour cannot be changed by Reflexions and
+Refractions._
+
+In the Experiments of the fourth Proposition of the first Part of this
+first Book, when I had separated the heterogeneous Rays from one
+another, the Spectrum _pt_ formed by the separated Rays, did in the
+Progress from its End _p_, on which the most refrangible Rays fell, unto
+its other End _t_, on which the least refrangible Rays fell, appear
+tinged with this Series of Colours, violet, indigo, blue, green, yellow,
+orange, red, together with all their intermediate Degrees in a continual
+Succession perpetually varying. So that there appeared as many Degrees
+of Colours, as there were sorts of Rays differing in Refrangibility.
+
+_Exper._ 5. Now, that these Colours could not be changed by Refraction,
+I knew by refracting with a Prism sometimes one very little Part of this
+Light, sometimes another very little Part, as is described in the
+twelfth Experiment of the first Part of this Book. For by this
+Refraction the Colour of the Light was never changed in the least. If
+any Part of the red Light was refracted, it remained totally of the same
+red Colour as before. No orange, no yellow, no green or blue, no other
+new Colour was produced by that Refraction. Neither did the Colour any
+ways change by repeated Refractions, but continued always the same red
+entirely as at first. The like Constancy and Immutability I found also
+in the blue, green, and other Colours. So also, if I looked through a
+Prism upon any Body illuminated with any part of this homogeneal Light,
+as in the fourteenth Experiment of the first Part of this Book is
+described; I could not perceive any new Colour generated this way. All
+Bodies illuminated with compound Light appear through Prisms confused,
+(as was said above) and tinged with various new Colours, but those
+illuminated with homogeneal Light appeared through Prisms neither less
+distinct, nor otherwise colour'd, than when viewed with the naked Eyes.
+Their Colours were not in the least changed by the Refraction of the
+interposed Prism. I speak here of a sensible Change of Colour: For the
+Light which I here call homogeneal, being not absolutely homogeneal,
+there ought to arise some little Change of Colour from its
+Heterogeneity. But, if that Heterogeneity was so little as it might be
+made by the said Experiments of the fourth Proposition, that Change was
+not sensible, and therefore in Experiments, where Sense is Judge, ought
+to be accounted none at all.
+
+_Exper._ 6. And as these Colours were not changeable by Refractions, so
+neither were they by Reflexions. For all white, grey, red, yellow,
+green, blue, violet Bodies, as Paper, Ashes, red Lead, Orpiment, Indico
+Bise, Gold, Silver, Copper, Grass, blue Flowers, Violets, Bubbles of
+Water tinged with various Colours, Peacock's Feathers, the Tincture of
+_Lignum Nephriticum_, and such-like, in red homogeneal Light appeared
+totally red, in blue Light totally blue, in green Light totally green,
+and so of other Colours. In the homogeneal Light of any Colour they all
+appeared totally of that same Colour, with this only Difference, that
+some of them reflected that Light more strongly, others more faintly. I
+never yet found any Body, which by reflecting homogeneal Light could
+sensibly change its Colour.
+
+From all which it is manifest, that if the Sun's Light consisted of but
+one sort of Rays, there would be but one Colour in the whole World, nor
+would it be possible to produce any new Colour by Reflexions and
+Refractions, and by consequence that the variety of Colours depends upon
+the Composition of Light.
+
+
+_DEFINITION._
+
+The homogeneal Light and Rays which appear red, or rather make Objects
+appear so, I call Rubrifick or Red-making; those which make Objects
+appear yellow, green, blue, and violet, I call Yellow-making,
+Green-making, Blue-making, Violet-making, and so of the rest. And if at
+any time I speak of Light and Rays as coloured or endued with Colours, I
+would be understood to speak not philosophically and properly, but
+grossly, and accordingly to such Conceptions as vulgar People in seeing
+all these Experiments would be apt to frame. For the Rays to speak
+properly are not coloured. In them there is nothing else than a certain
+Power and Disposition to stir up a Sensation of this or that Colour.
+For as Sound in a Bell or musical String, or other sounding Body, is
+nothing but a trembling Motion, and in the Air nothing but that Motion
+propagated from the Object, and in the Sensorium 'tis a Sense of that
+Motion under the Form of Sound; so Colours in the Object are nothing but
+a Disposition to reflect this or that sort of Rays more copiously than
+the rest; in the Rays they are nothing but their Dispositions to
+propagate this or that Motion into the Sensorium, and in the Sensorium
+they are Sensations of those Motions under the Forms of Colours.
+
+
+_PROP._ III. PROB. I.
+
+_To define the Refrangibility of the several sorts of homogeneal Light
+answering to the several Colours._
+
+For determining this Problem I made the following Experiment.[J]
+
+_Exper._ 7. When I had caused the Rectilinear Sides AF, GM, [in _Fig._
+4.] of the Spectrum of Colours made by the Prism to be distinctly
+defined, as in the fifth Experiment of the first Part of this Book is
+described, there were found in it all the homogeneal Colours in the same
+Order and Situation one among another as in the Spectrum of simple
+Light, described in the fourth Proposition of that Part. For the Circles
+of which the Spectrum of compound Light PT is composed, and which in
+the middle Parts of the Spectrum interfere, and are intermix'd with one
+another, are not intermix'd in their outmost Parts where they touch
+those Rectilinear Sides AF and GM. And therefore, in those Rectilinear
+Sides when distinctly defined, there is no new Colour generated by
+Refraction. I observed also, that if any where between the two outmost
+Circles TMF and PGA a Right Line, as [Greek: gd], was cross to the
+Spectrum, so as both Ends to fall perpendicularly upon its Rectilinear
+Sides, there appeared one and the same Colour, and degree of Colour from
+one End of this Line to the other. I delineated therefore in a Paper the
+Perimeter of the Spectrum FAP GMT, and in trying the third Experiment of
+the first Part of this Book, I held the Paper so that the Spectrum might
+fall upon this delineated Figure, and agree with it exactly, whilst an
+Assistant, whose Eyes for distinguishing Colours were more critical than
+mine, did by Right Lines [Greek: ab, gd, ez,] &c. drawn cross the
+Spectrum, note the Confines of the Colours, that is of the red M[Greek:
+ab]F, of the orange [Greek: agdb], of the yellow [Greek: gezd], of the
+green [Greek: eêthz], of the blue [Greek: êikth], of the indico [Greek:
+ilmk], and of the violet [Greek: l]GA[Greek: m]. And this Operation
+being divers times repeated both in the same, and in several Papers, I
+found that the Observations agreed well enough with one another, and
+that the Rectilinear Sides MG and FA were by the said cross Lines
+divided after the manner of a Musical Chord. Let GM be produced to X,
+that MX may be equal to GM, and conceive GX, [Greek: l]X, [Greek: i]X,
+[Greek: ê]X, [Greek: e]X, [Greek: g]X, [Greek: a]X, MX, to be in
+proportion to one another, as the Numbers, 1, 8/9, 5/6, 3/4, 2/3, 3/5,
+9/16, 1/2, and so to represent the Chords of the Key, and of a Tone, a
+third Minor, a fourth, a fifth, a sixth Major, a seventh and an eighth
+above that Key: And the Intervals M[Greek: a], [Greek: ag], [Greek: ge],
+[Greek: eê], [Greek: êi], [Greek: il], and [Greek: l]G, will be the
+Spaces which the several Colours (red, orange, yellow, green, blue,
+indigo, violet) take up.
+
+[Illustration: FIG. 4.]
+
+[Illustration: FIG. 5.]
+
+Now these Intervals or Spaces subtending the Differences of the
+Refractions of the Rays going to the Limits of those Colours, that is,
+to the Points M, [Greek: a], [Greek: g], [Greek: e], [Greek: ê], [Greek:
+i], [Greek: l], G, may without any sensible Error be accounted
+proportional to the Differences of the Sines of Refraction of those Rays
+having one common Sine of Incidence, and therefore since the common Sine
+of Incidence of the most and least refrangible Rays out of Glass into
+Air was (by a Method described above) found in proportion to their Sines
+of Refraction, as 50 to 77 and 78, divide the Difference between the
+Sines of Refraction 77 and 78, as the Line GM is divided by those
+Intervals, and you will have 77, 77-1/8, 77-1/5, 77-1/3, 77-1/2, 77-2/3,
+77-7/9, 78, the Sines of Refraction of those Rays out of Glass into Air,
+their common Sine of Incidence being 50. So then the Sines of the
+Incidences of all the red-making Rays out of Glass into Air, were to the
+Sines of their Refractions, not greater than 50 to 77, nor less than 50
+to 77-1/8, but they varied from one another according to all
+intermediate Proportions. And the Sines of the Incidences of the
+green-making Rays were to the Sines of their Refractions in all
+Proportions from that of 50 to 77-1/3, unto that of 50 to 77-1/2. And
+by the like Limits above-mentioned were the Refractions of the Rays
+belonging to the rest of the Colours defined, the Sines of the
+red-making Rays extending from 77 to 77-1/8, those of the orange-making
+from 77-1/8 to 77-1/5, those of the yellow-making from 77-1/5 to 77-1/3,
+those of the green-making from 77-1/3 to 77-1/2, those of the
+blue-making from 77-1/2 to 77-2/3, those of the indigo-making from
+77-2/3 to 77-7/9, and those of the violet from 77-7/9, to 78.
+
+These are the Laws of the Refractions made out of Glass into Air, and
+thence by the third Axiom of the first Part of this Book, the Laws of
+the Refractions made out of Air into Glass are easily derived.
+
+_Exper._ 8. I found moreover, that when Light goes out of Air through
+several contiguous refracting Mediums as through Water and Glass, and
+thence goes out again into Air, whether the refracting Superficies be
+parallel or inclin'd to one another, that Light as often as by contrary
+Refractions 'tis so corrected, that it emergeth in Lines parallel to
+those in which it was incident, continues ever after to be white. But if
+the emergent Rays be inclined to the incident, the Whiteness of the
+emerging Light will by degrees in passing on from the Place of
+Emergence, become tinged in its Edges with Colours. This I try'd by
+refracting Light with Prisms of Glass placed within a Prismatick Vessel
+of Water. Now those Colours argue a diverging and separation of the
+heterogeneous Rays from one another by means of their unequal
+Refractions, as in what follows will more fully appear. And, on the
+contrary, the permanent whiteness argues, that in like Incidences of the
+Rays there is no such separation of the emerging Rays, and by
+consequence no inequality of their whole Refractions. Whence I seem to
+gather the two following Theorems.
+
+1. The Excesses of the Sines of Refraction of several sorts of Rays
+above their common Sine of Incidence when the Refractions are made out
+of divers denser Mediums immediately into one and the same rarer Medium,
+suppose of Air, are to one another in a given Proportion.
+
+2. The Proportion of the Sine of Incidence to the Sine of Refraction of
+one and the same sort of Rays out of one Medium into another, is
+composed of the Proportion of the Sine of Incidence to the Sine of
+Refraction out of the first Medium into any third Medium, and of the
+Proportion of the Sine of Incidence to the Sine of Refraction out of
+that third Medium into the second Medium.
+
+By the first Theorem the Refractions of the Rays of every sort made out
+of any Medium into Air are known by having the Refraction of the Rays of
+any one sort. As for instance, if the Refractions of the Rays of every
+sort out of Rain-water into Air be desired, let the common Sine of
+Incidence out of Glass into Air be subducted from the Sines of
+Refraction, and the Excesses will be 27, 27-1/8, 27-1/5, 27-1/3, 27-1/2,
+27-2/3, 27-7/9, 28. Suppose now that the Sine of Incidence of the least
+refrangible Rays be to their Sine of Refraction out of Rain-water into
+Air as 3 to 4, and say as 1 the difference of those Sines is to 3 the
+Sine of Incidence, so is 27 the least of the Excesses above-mentioned to
+a fourth Number 81; and 81 will be the common Sine of Incidence out of
+Rain-water into Air, to which Sine if you add all the above-mentioned
+Excesses, you will have the desired Sines of the Refractions 108,
+108-1/8, 108-1/5, 108-1/3, 108-1/2, 108-2/3, 108-7/9, 109.
+
+By the latter Theorem the Refraction out of one Medium into another is
+gathered as often as you have the Refractions out of them both into any
+third Medium. As if the Sine of Incidence of any Ray out of Glass into
+Air be to its Sine of Refraction, as 20 to 31, and the Sine of Incidence
+of the same Ray out of Air into Water, be to its Sine of Refraction as 4
+to 3; the Sine of Incidence of that Ray out of Glass into Water will be
+to its Sine of Refraction as 20 to 31 and 4 to 3 jointly, that is, as
+the Factum of 20 and 4 to the Factum of 31 and 3, or as 80 to 93.
+
+And these Theorems being admitted into Opticks, there would be scope
+enough of handling that Science voluminously after a new manner,[K] not
+only by teaching those things which tend to the perfection of Vision,
+but also by determining mathematically all kinds of Phænomena of Colours
+which could be produced by Refractions. For to do this, there is nothing
+else requisite than to find out the Separations of heterogeneous Rays,
+and their various Mixtures and Proportions in every Mixture. By this
+way of arguing I invented almost all the Phænomena described in these
+Books, beside some others less necessary to the Argument; and by the
+successes I met with in the Trials, I dare promise, that to him who
+shall argue truly, and then try all things with good Glasses and
+sufficient Circumspection, the expected Event will not be wanting. But
+he is first to know what Colours will arise from any others mix'd in any
+assigned Proportion.
+
+
+_PROP._ IV. THEOR. III.
+
+_Colours may be produced by Composition which shall be like to the
+Colours of homogeneal Light as to the Appearance of Colour, but not as
+to the Immutability of Colour and Constitution of Light. And those
+Colours by how much they are more compounded by so much are they less
+full and intense, and by too much Composition they maybe diluted and
+weaken'd till they cease, and the Mixture becomes white or grey. There
+may be also Colours produced by Composition, which are not fully like
+any of the Colours of homogeneal Light._
+
+For a Mixture of homogeneal red and yellow compounds an Orange, like in
+appearance of Colour to that orange which in the series of unmixed
+prismatick Colours lies between them; but the Light of one orange is
+homogeneal as to Refrangibility, and that of the other is heterogeneal,
+and the Colour of the one, if viewed through a Prism, remains unchanged,
+that of the other is changed and resolved into its component Colours red
+and yellow. And after the same manner other neighbouring homogeneal
+Colours may compound new Colours, like the intermediate homogeneal ones,
+as yellow and green, the Colour between them both, and afterwards, if
+blue be added, there will be made a green the middle Colour of the three
+which enter the Composition. For the yellow and blue on either hand, if
+they are equal in quantity they draw the intermediate green equally
+towards themselves in Composition, and so keep it as it were in
+Æquilibrion, that it verge not more to the yellow on the one hand, and
+to the blue on the other, but by their mix'd Actions remain still a
+middle Colour. To this mix'd green there may be farther added some red
+and violet, and yet the green will not presently cease, but only grow
+less full and vivid, and by increasing the red and violet, it will grow
+more and more dilute, until by the prevalence of the added Colours it be
+overcome and turned into whiteness, or some other Colour. So if to the
+Colour of any homogeneal Light, the Sun's white Light composed of all
+sorts of Rays be added, that Colour will not vanish or change its
+Species, but be diluted, and by adding more and more white it will be
+diluted more and more perpetually. Lastly, If red and violet be mingled,
+there will be generated according to their various Proportions various
+Purples, such as are not like in appearance to the Colour of any
+homogeneal Light, and of these Purples mix'd with yellow and blue may be
+made other new Colours.
+
+
+_PROP._ V. THEOR. IV.
+
+_Whiteness and all grey Colours between white and black, may be
+compounded of Colours, and the whiteness of the Sun's Light is
+compounded of all the primary Colours mix'd in a due Proportion._
+
+The PROOF by Experiments.
+
+_Exper._ 9. The Sun shining into a dark Chamber through a little round
+hole in the Window-shut, and his Light being there refracted by a Prism
+to cast his coloured Image PT [in _Fig._ 5.] upon the opposite Wall: I
+held a white Paper V to that image in such manner that it might be
+illuminated by the colour'd Light reflected from thence, and yet not
+intercept any part of that Light in its passage from the Prism to the
+Spectrum. And I found that when the Paper was held nearer to any Colour
+than to the rest, it appeared of that Colour to which it approached
+nearest; but when it was equally or almost equally distant from all the
+Colours, so that it might be equally illuminated by them all it appeared
+white. And in this last situation of the Paper, if some Colours were
+intercepted, the Paper lost its white Colour, and appeared of the Colour
+of the rest of the Light which was not intercepted. So then the Paper
+was illuminated with Lights of various Colours, namely, red, yellow,
+green, blue and violet, and every part of the Light retained its proper
+Colour, until it was incident on the Paper, and became reflected thence
+to the Eye; so that if it had been either alone (the rest of the Light
+being intercepted) or if it had abounded most, and been predominant in
+the Light reflected from the Paper, it would have tinged the Paper with
+its own Colour; and yet being mixed with the rest of the Colours in a
+due proportion, it made the Paper look white, and therefore by a
+Composition with the rest produced that Colour. The several parts of the
+coloured Light reflected from the Spectrum, whilst they are propagated
+from thence through the Air, do perpetually retain their proper Colours,
+because wherever they fall upon the Eyes of any Spectator, they make the
+several parts of the Spectrum to appear under their proper Colours. They
+retain therefore their proper Colours when they fall upon the Paper V,
+and so by the confusion and perfect mixture of those Colours compound
+the whiteness of the Light reflected from thence.
+
+_Exper._ 10. Let that Spectrum or solar Image PT [in _Fig._ 6.] fall now
+upon the Lens MN above four Inches broad, and about six Feet distant
+from the Prism ABC and so figured that it may cause the coloured Light
+which divergeth from the Prism to converge and meet again at its Focus
+G, about six or eight Feet distant from the Lens, and there to fall
+perpendicularly upon a white Paper DE. And if you move this Paper to and
+fro, you will perceive that near the Lens, as at _de_, the whole solar
+Image (suppose at _pt_) will appear upon it intensely coloured after the
+manner above-explained, and that by receding from the Lens those Colours
+will perpetually come towards one another, and by mixing more and more
+dilute one another continually, until at length the Paper come to the
+Focus G, where by a perfect mixture they will wholly vanish and be
+converted into whiteness, the whole Light appearing now upon the Paper
+like a little white Circle. And afterwards by receding farther from the
+Lens, the Rays which before converged will now cross one another in the
+Focus G, and diverge from thence, and thereby make the Colours to appear
+again, but yet in a contrary order; suppose at [Greek: de], where the
+red _t_ is now above which before was below, and the violet _p_ is below
+which before was above.
+
+Let us now stop the Paper at the Focus G, where the Light appears
+totally white and circular, and let us consider its whiteness. I say,
+that this is composed of the converging Colours. For if any of those
+Colours be intercepted at the Lens, the whiteness will cease and
+degenerate into that Colour which ariseth from the composition of the
+other Colours which are not intercepted. And then if the intercepted
+Colours be let pass and fall upon that compound Colour, they mix with
+it, and by their mixture restore the whiteness. So if the violet, blue
+and green be intercepted, the remaining yellow, orange and red will
+compound upon the Paper an orange, and then if the intercepted Colours
+be let pass, they will fall upon this compounded orange, and together
+with it decompound a white. So also if the red and violet be
+intercepted, the remaining yellow, green and blue, will compound a green
+upon the Paper, and then the red and violet being let pass will fall
+upon this green, and together with it decompound a white. And that in
+this Composition of white the several Rays do not suffer any Change in
+their colorific Qualities by acting upon one another, but are only
+mixed, and by a mixture of their Colours produce white, may farther
+appear by these Arguments.
+
+[Illustration: FIG. 6.]
+
+If the Paper be placed beyond the Focus G, suppose at [Greek: de], and
+then the red Colour at the Lens be alternately intercepted, and let pass
+again, the violet Colour on the Paper will not suffer any Change
+thereby, as it ought to do if the several sorts of Rays acted upon one
+another in the Focus G, where they cross. Neither will the red upon the
+Paper be changed by any alternate stopping, and letting pass the violet
+which crosseth it.
+
+And if the Paper be placed at the Focus G, and the white round Image at
+G be viewed through the Prism HIK, and by the Refraction of that Prism
+be translated to the place _rv_, and there appear tinged with various
+Colours, namely, the violet at _v_ and red at _r_, and others between,
+and then the red Colours at the Lens be often stopp'd and let pass by
+turns, the red at _r_ will accordingly disappear, and return as often,
+but the violet at _v_ will not thereby suffer any Change. And so by
+stopping and letting pass alternately the blue at the Lens, the blue at
+_v_ will accordingly disappear and return, without any Change made in
+the red at _r_. The red therefore depends on one sort of Rays, and the
+blue on another sort, which in the Focus G where they are commix'd, do
+not act on one another. And there is the same Reason of the other
+Colours.
+
+I considered farther, that when the most refrangible Rays P_p_, and the
+least refrangible ones T_t_, are by converging inclined to one another,
+the Paper, if held very oblique to those Rays in the Focus G, might
+reflect one sort of them more copiously than the other sort, and by that
+Means the reflected Light would be tinged in that Focus with the Colour
+of the predominant Rays, provided those Rays severally retained their
+Colours, or colorific Qualities in the Composition of White made by them
+in that Focus. But if they did not retain them in that White, but became
+all of them severally endued there with a Disposition to strike the
+Sense with the Perception of White, then they could never lose their
+Whiteness by such Reflexions. I inclined therefore the Paper to the Rays
+very obliquely, as in the second Experiment of this second Part of the
+first Book, that the most refrangible Rays, might be more copiously
+reflected than the rest, and the Whiteness at Length changed
+successively into blue, indigo, and violet. Then I inclined it the
+contrary Way, that the least refrangible Rays might be more copious in
+the reflected Light than the rest, and the Whiteness turned successively
+to yellow, orange, and red.
+
+Lastly, I made an Instrument XY in fashion of a Comb, whose Teeth being
+in number sixteen, were about an Inch and a half broad, and the
+Intervals of the Teeth about two Inches wide. Then by interposing
+successively the Teeth of this Instrument near the Lens, I intercepted
+Part of the Colours by the interposed Tooth, whilst the rest of them
+went on through the Interval of the Teeth to the Paper DE, and there
+painted a round Solar Image. But the Paper I had first placed so, that
+the Image might appear white as often as the Comb was taken away; and
+then the Comb being as was said interposed, that Whiteness by reason of
+the intercepted Part of the Colours at the Lens did always change into
+the Colour compounded of those Colours which were not intercepted, and
+that Colour was by the Motion of the Comb perpetually varied so, that in
+the passing of every Tooth over the Lens all these Colours, red, yellow,
+green, blue, and purple, did always succeed one another. I caused
+therefore all the Teeth to pass successively over the Lens, and when the
+Motion was slow, there appeared a perpetual Succession of the Colours
+upon the Paper: But if I so much accelerated the Motion, that the
+Colours by reason of their quick Succession could not be distinguished
+from one another, the Appearance of the single Colours ceased. There was
+no red, no yellow, no green, no blue, nor purple to be seen any longer,
+but from a Confusion of them all there arose one uniform white Colour.
+Of the Light which now by the Mixture of all the Colours appeared white,
+there was no Part really white. One Part was red, another yellow, a
+third green, a fourth blue, a fifth purple, and every Part retains its
+proper Colour till it strike the Sensorium. If the Impressions follow
+one another slowly, so that they may be severally perceived, there is
+made a distinct Sensation of all the Colours one after another in a
+continual Succession. But if the Impressions follow one another so
+quickly, that they cannot be severally perceived, there ariseth out of
+them all one common Sensation, which is neither of this Colour alone nor
+of that alone, but hath it self indifferently to 'em all, and this is a
+Sensation of Whiteness. By the Quickness of the Successions, the
+Impressions of the several Colours are confounded in the Sensorium, and
+out of that Confusion ariseth a mix'd Sensation. If a burning Coal be
+nimbly moved round in a Circle with Gyrations continually repeated, the
+whole Circle will appear like Fire; the reason of which is, that the
+Sensation of the Coal in the several Places of that Circle remains
+impress'd on the Sensorium, until the Coal return again to the same
+Place. And so in a quick Consecution of the Colours the Impression of
+every Colour remains in the Sensorium, until a Revolution of all the
+Colours be compleated, and that first Colour return again. The
+Impressions therefore of all the successive Colours are at once in the
+Sensorium, and jointly stir up a Sensation of them all; and so it is
+manifest by this Experiment, that the commix'd Impressions of all the
+Colours do stir up and beget a Sensation of white, that is, that
+Whiteness is compounded of all the Colours.
+
+And if the Comb be now taken away, that all the Colours may at once pass
+from the Lens to the Paper, and be there intermixed, and together
+reflected thence to the Spectator's Eyes; their Impressions on the
+Sensorium being now more subtilly and perfectly commixed there, ought
+much more to stir up a Sensation of Whiteness.
+
+You may instead of the Lens use two Prisms HIK and LMN, which by
+refracting the coloured Light the contrary Way to that of the first
+Refraction, may make the diverging Rays converge and meet again in G, as
+you see represented in the seventh Figure. For where they meet and mix,
+they will compose a white Light, as when a Lens is used.
+
+_Exper._ 11. Let the Sun's coloured Image PT [in _Fig._ 8.] fall upon
+the Wall of a dark Chamber, as in the third Experiment of the first
+Book, and let the same be viewed through a Prism _abc_, held parallel to
+the Prism ABC, by whose Refraction that Image was made, and let it now
+appear lower than before, suppose in the Place S over-against the red
+Colour T. And if you go near to the Image PT, the Spectrum S will appear
+oblong and coloured like the Image PT; but if you recede from it, the
+Colours of the spectrum S will be contracted more and more, and at
+length vanish, that Spectrum S becoming perfectly round and white; and
+if you recede yet farther, the Colours will emerge again, but in a
+contrary Order. Now that Spectrum S appears white in that Case, when the
+Rays of several sorts which converge from the several Parts of the Image
+PT, to the Prism _abc_, are so refracted unequally by it, that in their
+Passage from the Prism to the Eye they may diverge from one and the same
+Point of the Spectrum S, and so fall afterwards upon one and the same
+Point in the bottom of the Eye, and there be mingled.
+
+[Illustration: FIG. 7.]
+
+[Illustration: FIG. 8.]
+
+And farther, if the Comb be here made use of, by whose Teeth the Colours
+at the Image PT may be successively intercepted; the Spectrum S, when
+the Comb is moved slowly, will be perpetually tinged with successive
+Colours: But when by accelerating the Motion of the Comb, the Succession
+of the Colours is so quick that they cannot be severally seen, that
+Spectrum S, by a confused and mix'd Sensation of them all, will appear
+white.
+
+_Exper._ 12. The Sun shining through a large Prism ABC [in _Fig._ 9.]
+upon a Comb XY, placed immediately behind the Prism, his Light which
+passed through the Interstices of the Teeth fell upon a white Paper DE.
+The Breadths of the Teeth were equal to their Interstices, and seven
+Teeth together with their Interstices took up an Inch in Breadth. Now,
+when the Paper was about two or three Inches distant from the Comb, the
+Light which passed through its several Interstices painted so many
+Ranges of Colours, _kl_, _mn_, _op_, _qr_, &c. which were parallel to
+one another, and contiguous, and without any Mixture of white. And these
+Ranges of Colours, if the Comb was moved continually up and down with a
+reciprocal Motion, ascended and descended in the Paper, and when the
+Motion of the Comb was so quick, that the Colours could not be
+distinguished from one another, the whole Paper by their Confusion and
+Mixture in the Sensorium appeared white.
+
+[Illustration: FIG. 9.]
+
+Let the Comb now rest, and let the Paper be removed farther from the
+Prism, and the several Ranges of Colours will be dilated and expanded
+into one another more and more, and by mixing their Colours will dilute
+one another, and at length, when the distance of the Paper from the Comb
+is about a Foot, or a little more (suppose in the Place 2D 2E) they will
+so far dilute one another, as to become white.
+
+With any Obstacle, let all the Light be now stopp'd which passes through
+any one Interval of the Teeth, so that the Range of Colours which comes
+from thence may be taken away, and you will see the Light of the rest of
+the Ranges to be expanded into the Place of the Range taken away, and
+there to be coloured. Let the intercepted Range pass on as before, and
+its Colours falling upon the Colours of the other Ranges, and mixing
+with them, will restore the Whiteness.
+
+Let the Paper 2D 2E be now very much inclined to the Rays, so that the
+most refrangible Rays may be more copiously reflected than the rest, and
+the white Colour of the Paper through the Excess of those Rays will be
+changed into blue and violet. Let the Paper be as much inclined the
+contrary way, that the least refrangible Rays may be now more copiously
+reflected than the rest, and by their Excess the Whiteness will be
+changed into yellow and red. The several Rays therefore in that white
+Light do retain their colorific Qualities, by which those of any sort,
+whenever they become more copious than the rest, do by their Excess and
+Predominance cause their proper Colour to appear.
+
+And by the same way of arguing, applied to the third Experiment of this
+second Part of the first Book, it may be concluded, that the white
+Colour of all refracted Light at its very first Emergence, where it
+appears as white as before its Incidence, is compounded of various
+Colours.
+
+[Illustration: FIG. 10.]
+
+_Exper._ 13. In the foregoing Experiment the several Intervals of the
+Teeth of the Comb do the Office of so many Prisms, every Interval
+producing the Phænomenon of one Prism. Whence instead of those Intervals
+using several Prisms, I try'd to compound Whiteness by mixing their
+Colours, and did it by using only three Prisms, as also by using only
+two as follows. Let two Prisms ABC and _abc_, [in _Fig._ 10.] whose
+refracting Angles B and _b_ are equal, be so placed parallel to one
+another, that the refracting Angle B of the one may touch the Angle _c_
+at the Base of the other, and their Planes CB and _cb_, at which the
+Rays emerge, may lie in Directum. Then let the Light trajected through
+them fall upon the Paper MN, distant about 8 or 12 Inches from the
+Prisms. And the Colours generated by the interior Limits B and _c_ of
+the two Prisms, will be mingled at PT, and there compound white. For if
+either Prism be taken away, the Colours made by the other will appear in
+that Place PT, and when the Prism is restored to its Place again, so
+that its Colours may there fall upon the Colours of the other, the
+Mixture of them both will restore the Whiteness.
+
+This Experiment succeeds also, as I have tried, when the Angle _b_ of
+the lower Prism, is a little greater than the Angle B of the upper, and
+between the interior Angles B and _c_, there intercedes some Space B_c_,
+as is represented in the Figure, and the refracting Planes BC and _bc_,
+are neither in Directum, nor parallel to one another. For there is
+nothing more requisite to the Success of this Experiment, than that the
+Rays of all sorts may be uniformly mixed upon the Paper in the Place PT.
+If the most refrangible Rays coming from the superior Prism take up all
+the Space from M to P, the Rays of the same sort which come from the
+inferior Prism ought to begin at P, and take up all the rest of the
+Space from thence towards N. If the least refrangible Rays coming from
+the superior Prism take up the Space MT, the Rays of the same kind which
+come from the other Prism ought to begin at T, and take up the
+remaining Space TN. If one sort of the Rays which have intermediate
+Degrees of Refrangibility, and come from the superior Prism be extended
+through the Space MQ, and another sort of those Rays through the Space
+MR, and a third sort of them through the Space MS, the same sorts of
+Rays coming from the lower Prism, ought to illuminate the remaining
+Spaces QN, RN, SN, respectively. And the same is to be understood of all
+the other sorts of Rays. For thus the Rays of every sort will be
+scattered uniformly and evenly through the whole Space MN, and so being
+every where mix'd in the same Proportion, they must every where produce
+the same Colour. And therefore, since by this Mixture they produce white
+in the Exterior Spaces MP and TN, they must also produce white in the
+Interior Space PT. This is the reason of the Composition by which
+Whiteness was produced in this Experiment, and by what other way soever
+I made the like Composition, the Result was Whiteness.
+
+Lastly, If with the Teeth of a Comb of a due Size, the coloured Lights
+of the two Prisms which fall upon the Space PT be alternately
+intercepted, that Space PT, when the Motion of the Comb is slow, will
+always appear coloured, but by accelerating the Motion of the Comb so
+much that the successive Colours cannot be distinguished from one
+another, it will appear white.
+
+_Exper._ 14. Hitherto I have produced Whiteness by mixing the Colours of
+Prisms. If now the Colours of natural Bodies are to be mingled, let
+Water a little thicken'd with Soap be agitated to raise a Froth, and
+after that Froth has stood a little, there will appear to one that shall
+view it intently various Colours every where in the Surfaces of the
+several Bubbles; but to one that shall go so far off, that he cannot
+distinguish the Colours from one another, the whole Froth will grow
+white with a perfect Whiteness.
+
+_Exper._ 15. Lastly, In attempting to compound a white, by mixing the
+coloured Powders which Painters use, I consider'd that all colour'd
+Powders do suppress and stop in them a very considerable Part of the
+Light by which they are illuminated. For they become colour'd by
+reflecting the Light of their own Colours more copiously, and that of
+all other Colours more sparingly, and yet they do not reflect the Light
+of their own Colours so copiously as white Bodies do. If red Lead, for
+instance, and a white Paper, be placed in the red Light of the colour'd
+Spectrum made in a dark Chamber by the Refraction of a Prism, as is
+described in the third Experiment of the first Part of this Book; the
+Paper will appear more lucid than the red Lead, and therefore reflects
+the red-making Rays more copiously than red Lead doth. And if they be
+held in the Light of any other Colour, the Light reflected by the Paper
+will exceed the Light reflected by the red Lead in a much greater
+Proportion. And the like happens in Powders of other Colours. And
+therefore by mixing such Powders, we are not to expect a strong and
+full White, such as is that of Paper, but some dusky obscure one, such
+as might arise from a Mixture of Light and Darkness, or from white and
+black, that is, a grey, or dun, or russet brown, such as are the Colours
+of a Man's Nail, of a Mouse, of Ashes, of ordinary Stones, of Mortar, of
+Dust and Dirt in High-ways, and the like. And such a dark white I have
+often produced by mixing colour'd Powders. For thus one Part of red
+Lead, and five Parts of _Viride Æris_, composed a dun Colour like that
+of a Mouse. For these two Colours were severally so compounded of
+others, that in both together were a Mixture of all Colours; and there
+was less red Lead used than _Viride Æris_, because of the Fulness of its
+Colour. Again, one Part of red Lead, and four Parts of blue Bise,
+composed a dun Colour verging a little to purple, and by adding to this
+a certain Mixture of Orpiment and _Viride Æris_ in a due Proportion, the
+Mixture lost its purple Tincture, and became perfectly dun. But the
+Experiment succeeded best without Minium thus. To Orpiment I added by
+little and little a certain full bright purple, which Painters use,
+until the Orpiment ceased to be yellow, and became of a pale red. Then I
+diluted that red by adding a little _Viride Æris_, and a little more
+blue Bise than _Viride Æris_, until it became of such a grey or pale
+white, as verged to no one of the Colours more than to another. For thus
+it became of a Colour equal in Whiteness to that of Ashes, or of Wood
+newly cut, or of a Man's Skin. The Orpiment reflected more Light than
+did any other of the Powders, and therefore conduced more to the
+Whiteness of the compounded Colour than they. To assign the Proportions
+accurately may be difficult, by reason of the different Goodness of
+Powders of the same kind. Accordingly, as the Colour of any Powder is
+more or less full and luminous, it ought to be used in a less or greater
+Proportion.
+
+Now, considering that these grey and dun Colours may be also produced by
+mixing Whites and Blacks, and by consequence differ from perfect Whites,
+not in Species of Colours, but only in degree of Luminousness, it is
+manifest that there is nothing more requisite to make them perfectly
+white than to increase their Light sufficiently; and, on the contrary,
+if by increasing their Light they can be brought to perfect Whiteness,
+it will thence also follow, that they are of the same Species of Colour
+with the best Whites, and differ from them only in the Quantity of
+Light. And this I tried as follows. I took the third of the
+above-mention'd grey Mixtures, (that which was compounded of Orpiment,
+Purple, Bise, and _Viride Æris_) and rubbed it thickly upon the Floor of
+my Chamber, where the Sun shone upon it through the opened Casement; and
+by it, in the shadow, I laid a Piece of white Paper of the same Bigness.
+Then going from them to the distance of 12 or 18 Feet, so that I could
+not discern the Unevenness of the Surface of the Powder, nor the little
+Shadows let fall from the gritty Particles thereof; the Powder appeared
+intensely white, so as to transcend even the Paper it self in Whiteness,
+especially if the Paper were a little shaded from the Light of the
+Clouds, and then the Paper compared with the Powder appeared of such a
+grey Colour as the Powder had done before. But by laying the Paper where
+the Sun shines through the Glass of the Window, or by shutting the
+Window that the Sun might shine through the Glass upon the Powder, and
+by such other fit Means of increasing or decreasing the Lights wherewith
+the Powder and Paper were illuminated, the Light wherewith the Powder is
+illuminated may be made stronger in such a due Proportion than the Light
+wherewith the Paper is illuminated, that they shall both appear exactly
+alike in Whiteness. For when I was trying this, a Friend coming to visit
+me, I stopp'd him at the Door, and before I told him what the Colours
+were, or what I was doing; I asked him, Which of the two Whites were the
+best, and wherein they differed? And after he had at that distance
+viewed them well, he answer'd, that they were both good Whites, and that
+he could not say which was best, nor wherein their Colours differed.
+Now, if you consider, that this White of the Powder in the Sun-shine was
+compounded of the Colours which the component Powders (Orpiment, Purple,
+Bise, and _Viride Æris_) have in the same Sun-shine, you must
+acknowledge by this Experiment, as well as by the former, that perfect
+Whiteness may be compounded of Colours.
+
+From what has been said it is also evident, that the Whiteness of the
+Sun's Light is compounded of all the Colours wherewith the several sorts
+of Rays whereof that Light consists, when by their several
+Refrangibilities they are separated from one another, do tinge Paper or
+any other white Body whereon they fall. For those Colours (by _Prop._
+II. _Part_ 2.) are unchangeable, and whenever all those Rays with those
+their Colours are mix'd again, they reproduce the same white Light as
+before.
+
+
+_PROP._ VI. PROB. II.
+
+_In a mixture of Primary Colours, the Quantity and Quality of each being
+given, to know the Colour of the Compound._
+
+[Illustration: FIG. 11.]
+
+With the Center O [in _Fig._ 11.] and Radius OD describe a Circle ADF,
+and distinguish its Circumference into seven Parts DE, EF, FG, GA, AB,
+BC, CD, proportional to the seven Musical Tones or Intervals of the
+eight Sounds, _Sol_, _la_, _fa_, _sol_, _la_, _mi_, _fa_, _sol_,
+contained in an eight, that is, proportional to the Number 1/9, 1/16,
+1/10, 1/9, 1/16, 1/16, 1/9. Let the first Part DE represent a red
+Colour, the second EF orange, the third FG yellow, the fourth CA green,
+the fifth AB blue, the sixth BC indigo, and the seventh CD violet. And
+conceive that these are all the Colours of uncompounded Light gradually
+passing into one another, as they do when made by Prisms; the
+Circumference DEFGABCD, representing the whole Series of Colours from
+one end of the Sun's colour'd Image to the other, so that from D to E be
+all degrees of red, at E the mean Colour between red and orange, from E
+to F all degrees of orange, at F the mean between orange and yellow,
+from F to G all degrees of yellow, and so on. Let _p_ be the Center of
+Gravity of the Arch DE, and _q_, _r_, _s_, _t_, _u_, _x_, the Centers of
+Gravity of the Arches EF, FG, GA, AB, BC, and CD respectively, and about
+those Centers of Gravity let Circles proportional to the Number of Rays
+of each Colour in the given Mixture be describ'd: that is, the Circle
+_p_ proportional to the Number of the red-making Rays in the Mixture,
+the Circle _q_ proportional to the Number of the orange-making Rays in
+the Mixture, and so of the rest. Find the common Center of Gravity of
+all those Circles, _p_, _q_, _r_, _s_, _t_, _u_, _x_. Let that Center be
+Z; and from the Center of the Circle ADF, through Z to the
+Circumference, drawing the Right Line OY, the Place of the Point Y in
+the Circumference shall shew the Colour arising from the Composition of
+all the Colours in the given Mixture, and the Line OZ shall be
+proportional to the Fulness or Intenseness of the Colour, that is, to
+its distance from Whiteness. As if Y fall in the middle between F and G,
+the compounded Colour shall be the best yellow; if Y verge from the
+middle towards F or G, the compound Colour shall accordingly be a
+yellow, verging towards orange or green. If Z fall upon the
+Circumference, the Colour shall be intense and florid in the highest
+Degree; if it fall in the mid-way between the Circumference and Center,
+it shall be but half so intense, that is, it shall be such a Colour as
+would be made by diluting the intensest yellow with an equal quantity of
+whiteness; and if it fall upon the center O, the Colour shall have lost
+all its intenseness, and become a white. But it is to be noted, That if
+the point Z fall in or near the line OD, the main ingredients being the
+red and violet, the Colour compounded shall not be any of the prismatick
+Colours, but a purple, inclining to red or violet, accordingly as the
+point Z lieth on the side of the line DO towards E or towards C, and in
+general the compounded violet is more bright and more fiery than the
+uncompounded. Also if only two of the primary Colours which in the
+circle are opposite to one another be mixed in an equal proportion, the
+point Z shall fall upon the center O, and yet the Colour compounded of
+those two shall not be perfectly white, but some faint anonymous Colour.
+For I could never yet by mixing only two primary Colours produce a
+perfect white. Whether it may be compounded of a mixture of three taken
+at equal distances in the circumference I do not know, but of four or
+five I do not much question but it may. But these are Curiosities of
+little or no moment to the understanding the Phænomena of Nature. For in
+all whites produced by Nature, there uses to be a mixture of all sorts
+of Rays, and by consequence a composition of all Colours.
+
+To give an instance of this Rule; suppose a Colour is compounded of
+these homogeneal Colours, of violet one part, of indigo one part, of
+blue two parts, of green three parts, of yellow five parts, of orange
+six parts, and of red ten parts. Proportional to these parts describe
+the Circles _x_, _v_, _t_, _s_, _r_, _q_, _p_, respectively, that is, so
+that if the Circle _x_ be one, the Circle _v_ may be one, the Circle _t_
+two, the Circle _s_ three, and the Circles _r_, _q_ and _p_, five, six
+and ten. Then I find Z the common center of gravity of these Circles,
+and through Z drawing the Line OY, the Point Y falls upon the
+circumference between E and F, something nearer to E than to F, and
+thence I conclude, that the Colour compounded of these Ingredients will
+be an orange, verging a little more to red than to yellow. Also I find
+that OZ is a little less than one half of OY, and thence I conclude,
+that this orange hath a little less than half the fulness or intenseness
+of an uncompounded orange; that is to say, that it is such an orange as
+may be made by mixing an homogeneal orange with a good white in the
+proportion of the Line OZ to the Line ZY, this Proportion being not of
+the quantities of mixed orange and white Powders, but of the quantities
+of the Lights reflected from them.
+
+This Rule I conceive accurate enough for practice, though not
+mathematically accurate; and the truth of it may be sufficiently proved
+to Sense, by stopping any of the Colours at the Lens in the tenth
+Experiment of this Book. For the rest of the Colours which are not
+stopp'd, but pass on to the Focus of the Lens, will there compound
+either accurately or very nearly such a Colour, as by this Rule ought to
+result from their Mixture.
+
+
+_PROP._ VII. THEOR. V.
+
+_All the Colours in the Universe which are made by Light, and depend not
+on the Power of Imagination, are either the Colours of homogeneal
+Lights, or compounded of these, and that either accurately or very
+nearly, according to the Rule of the foregoing Problem._
+
+For it has been proved (in _Prop. 1. Part 2._) that the changes of
+Colours made by Refractions do not arise from any new Modifications of
+the Rays impress'd by those Refractions, and by the various Terminations
+of Light and Shadow, as has been the constant and general Opinion of
+Philosophers. It has also been proved that the several Colours of the
+homogeneal Rays do constantly answer to their degrees of Refrangibility,
+(_Prop._ 1. _Part_ 1. and _Prop._ 2. _Part_ 2.) and that their degrees
+of Refrangibility cannot be changed by Refractions and Reflexions
+(_Prop._ 2. _Part_ 1.) and by consequence that those their Colours are
+likewise immutable. It has also been proved directly by refracting and
+reflecting homogeneal Lights apart, that their Colours cannot be
+changed, (_Prop._ 2. _Part_ 2.) It has been proved also, that when the
+several sorts of Rays are mixed, and in crossing pass through the same
+space, they do not act on one another so as to change each others
+colorific qualities. (_Exper._ 10. _Part_ 2.) but by mixing their
+Actions in the Sensorium beget a Sensation differing from what either
+would do apart, that is a Sensation of a mean Colour between their
+proper Colours; and particularly when by the concourse and mixtures of
+all sorts of Rays, a white Colour is produced, the white is a mixture of
+all the Colours which the Rays would have apart, (_Prop._ 5. _Part_ 2.)
+The Rays in that mixture do not lose or alter their several colorific
+qualities, but by all their various kinds of Actions mix'd in the
+Sensorium, beget a Sensation of a middling Colour between all their
+Colours, which is whiteness. For whiteness is a mean between all
+Colours, having it self indifferently to them all, so as with equal
+facility to be tinged with any of them. A red Powder mixed with a little
+blue, or a blue with a little red, doth not presently lose its Colour,
+but a white Powder mix'd with any Colour is presently tinged with that
+Colour, and is equally capable of being tinged with any Colour whatever.
+It has been shewed also, that as the Sun's Light is mix'd of all sorts
+of Rays, so its whiteness is a mixture of the Colours of all sorts of
+Rays; those Rays having from the beginning their several colorific
+qualities as well as their several Refrangibilities, and retaining them
+perpetually unchanged notwithstanding any Refractions or Reflexions they
+may at any time suffer, and that whenever any sort of the Sun's Rays is
+by any means (as by Reflexion in _Exper._ 9, and 10. _Part_ 1. or by
+Refraction as happens in all Refractions) separated from the rest, they
+then manifest their proper Colours. These things have been prov'd, and
+the sum of all this amounts to the Proposition here to be proved. For if
+the Sun's Light is mix'd of several sorts of Rays, each of which have
+originally their several Refrangibilities and colorific Qualities, and
+notwithstanding their Refractions and Reflexions, and their various
+Separations or Mixtures, keep those their original Properties
+perpetually the same without alteration; then all the Colours in the
+World must be such as constantly ought to arise from the original
+colorific qualities of the Rays whereof the Lights consist by which
+those Colours are seen. And therefore if the reason of any Colour
+whatever be required, we have nothing else to do than to consider how
+the Rays in the Sun's Light have by Reflexions or Refractions, or other
+causes, been parted from one another, or mixed together; or otherwise to
+find out what sorts of Rays are in the Light by which that Colour is
+made, and in what Proportion; and then by the last Problem to learn the
+Colour which ought to arise by mixing those Rays (or their Colours) in
+that proportion. I speak here of Colours so far as they arise from
+Light. For they appear sometimes by other Causes, as when by the power
+of Phantasy we see Colours in a Dream, or a Mad-man sees things before
+him which are not there; or when we see Fire by striking the Eye, or see
+Colours like the Eye of a Peacock's Feather, by pressing our Eyes in
+either corner whilst we look the other way. Where these and such like
+Causes interpose not, the Colour always answers to the sort or sorts of
+the Rays whereof the Light consists, as I have constantly found in
+whatever Phænomena of Colours I have hitherto been able to examine. I
+shall in the following Propositions give instances of this in the
+Phænomena of chiefest note.
+
+
+_PROP._ VIII. PROB. III.
+
+_By the discovered Properties of Light to explain the Colours made by
+Prisms._
+
+Let ABC [in _Fig._ 12.] represent a Prism refracting the Light of the
+Sun, which comes into a dark Chamber through a hole F[Greek: ph] almost
+as broad as the Prism, and let MN represent a white Paper on which the
+refracted Light is cast, and suppose the most refrangible or deepest
+violet-making Rays fall upon the Space P[Greek: p], the least
+refrangible or deepest red-making Rays upon the Space T[Greek: t], the
+middle sort between the indigo-making and blue-making Rays upon the
+Space Q[Greek: ch], the middle sort of the green-making Rays upon the
+Space R, the middle sort between the yellow-making and orange-making
+Rays upon the Space S[Greek: s], and other intermediate sorts upon
+intermediate Spaces. For so the Spaces upon which the several sorts
+adequately fall will by reason of the different Refrangibility of those
+sorts be one lower than another. Now if the Paper MN be so near the
+Prism that the Spaces PT and [Greek: pt] do not interfere with one
+another, the distance between them T[Greek: p] will be illuminated by
+all the sorts of Rays in that proportion to one another which they have
+at their very first coming out of the Prism, and consequently be white.
+But the Spaces PT and [Greek: pt] on either hand, will not be
+illuminated by them all, and therefore will appear coloured. And
+particularly at P, where the outmost violet-making Rays fall alone, the
+Colour must be the deepest violet. At Q where the violet-making and
+indigo-making Rays are mixed, it must be a violet inclining much to
+indigo. At R where the violet-making, indigo-making, blue-making, and
+one half of the green-making Rays are mixed, their Colours must (by the
+construction of the second Problem) compound a middle Colour between
+indigo and blue. At S where all the Rays are mixed, except the
+red-making and orange-making, their Colours ought by the same Rule to
+compound a faint blue, verging more to green than indigo. And in the
+progress from S to T, this blue will grow more and more faint and
+dilute, till at T, where all the Colours begin to be mixed, it ends in
+whiteness.
+
+[Illustration: FIG. 12.]
+
+So again, on the other side of the white at [Greek: t], where the least
+refrangible or utmost red-making Rays are alone, the Colour must be the
+deepest red. At [Greek: s] the mixture of red and orange will compound a
+red inclining to orange. At [Greek: r] the mixture of red, orange,
+yellow, and one half of the green must compound a middle Colour between
+orange and yellow. At [Greek: ch] the mixture of all Colours but violet
+and indigo will compound a faint yellow, verging more to green than to
+orange. And this yellow will grow more faint and dilute continually in
+its progress from [Greek: ch] to [Greek: p], where by a mixture of all
+sorts of Rays it will become white.
+
+These Colours ought to appear were the Sun's Light perfectly white: But
+because it inclines to yellow, the Excess of the yellow-making Rays
+whereby 'tis tinged with that Colour, being mixed with the faint blue
+between S and T, will draw it to a faint green. And so the Colours in
+order from P to [Greek: t] ought to be violet, indigo, blue, very faint
+green, white, faint yellow, orange, red. Thus it is by the computation:
+And they that please to view the Colours made by a Prism will find it so
+in Nature.
+
+These are the Colours on both sides the white when the Paper is held
+between the Prism and the Point X where the Colours meet, and the
+interjacent white vanishes. For if the Paper be held still farther off
+from the Prism, the most refrangible and least refrangible Rays will be
+wanting in the middle of the Light, and the rest of the Rays which are
+found there, will by mixture produce a fuller green than before. Also
+the yellow and blue will now become less compounded, and by consequence
+more intense than before. And this also agrees with experience.
+
+And if one look through a Prism upon a white Object encompassed with
+blackness or darkness, the reason of the Colours arising on the edges is
+much the same, as will appear to one that shall a little consider it. If
+a black Object be encompassed with a white one, the Colours which appear
+through the Prism are to be derived from the Light of the white one,
+spreading into the Regions of the black, and therefore they appear in a
+contrary order to that, when a white Object is surrounded with black.
+And the same is to be understood when an Object is viewed, whose parts
+are some of them less luminous than others. For in the borders of the
+more and less luminous Parts, Colours ought always by the same
+Principles to arise from the Excess of the Light of the more luminous,
+and to be of the same kind as if the darker parts were black, but yet to
+be more faint and dilute.
+
+What is said of Colours made by Prisms may be easily applied to Colours
+made by the Glasses of Telescopes or Microscopes, or by the Humours of
+the Eye. For if the Object-glass of a Telescope be thicker on one side
+than on the other, or if one half of the Glass, or one half of the Pupil
+of the Eye be cover'd with any opake substance; the Object-glass, or
+that part of it or of the Eye which is not cover'd, may be consider'd as
+a Wedge with crooked Sides, and every Wedge of Glass or other pellucid
+Substance has the effect of a Prism in refracting the Light which passes
+through it.[L]
+
+How the Colours in the ninth and tenth Experiments of the first Part
+arise from the different Reflexibility of Light, is evident by what was
+there said. But it is observable in the ninth Experiment, that whilst
+the Sun's direct Light is yellow, the Excess of the blue-making Rays in
+the reflected beam of Light MN, suffices only to bring that yellow to a
+pale white inclining to blue, and not to tinge it with a manifestly blue
+Colour. To obtain therefore a better blue, I used instead of the yellow
+Light of the Sun the white Light of the Clouds, by varying a little the
+Experiment, as follows.
+
+[Illustration: FIG. 13.]
+
+_Exper._ 16 Let HFG [in _Fig._ 13.] represent a Prism in the open Air,
+and S the Eye of the Spectator, viewing the Clouds by their Light coming
+into the Prism at the Plane Side FIGK, and reflected in it by its Base
+HEIG, and thence going out through its Plane Side HEFK to the Eye. And
+when the Prism and Eye are conveniently placed, so that the Angles of
+Incidence and Reflexion at the Base may be about 40 Degrees, the
+Spectator will see a Bow MN of a blue Colour, running from one End of
+the Base to the other, with the Concave Side towards him, and the Part
+of the Base IMNG beyond this Bow will be brighter than the other Part
+EMNH on the other Side of it. This blue Colour MN being made by nothing
+else than by Reflexion of a specular Superficies, seems so odd a
+Phænomenon, and so difficult to be explained by the vulgar Hypothesis of
+Philosophers, that I could not but think it deserved to be taken Notice
+of. Now for understanding the Reason of it, suppose the Plane ABC to cut
+the Plane Sides and Base of the Prism perpendicularly. From the Eye to
+the Line BC, wherein that Plane cuts the Base, draw the Lines S_p_ and
+S_t_, in the Angles S_pc_ 50 degr. 1/9, and S_tc_ 49 degr. 1/28, and the
+Point _p_ will be the Limit beyond which none of the most refrangible
+Rays can pass through the Base of the Prism, and be refracted, whose
+Incidence is such that they may be reflected to the Eye; and the Point
+_t_ will be the like Limit for the least refrangible Rays, that is,
+beyond which none of them can pass through the Base, whose Incidence is
+such that by Reflexion they may come to the Eye. And the Point _r_ taken
+in the middle Way between _p_ and _t_, will be the like Limit for the
+meanly refrangible Rays. And therefore all the least refrangible Rays
+which fall upon the Base beyond _t_, that is, between _t_ and B, and can
+come from thence to the Eye, will be reflected thither: But on this side
+_t_, that is, between _t_ and _c_, many of these Rays will be
+transmitted through the Base. And all the most refrangible Rays which
+fall upon the Base beyond _p_, that is, between, _p_ and B, and can by
+Reflexion come from thence to the Eye, will be reflected thither, but
+every where between _p_ and _c_, many of these Rays will get through the
+Base, and be refracted; and the same is to be understood of the meanly
+refrangible Rays on either side of the Point _r_. Whence it follows,
+that the Base of the Prism must every where between _t_ and B, by a
+total Reflexion of all sorts of Rays to the Eye, look white and bright.
+And every where between _p_ and C, by reason of the Transmission of many
+Rays of every sort, look more pale, obscure, and dark. But at _r_, and
+in other Places between _p_ and _t_, where all the more refrangible Rays
+are reflected to the Eye, and many of the less refrangible are
+transmitted, the Excess of the most refrangible in the reflected Light
+will tinge that Light with their Colour, which is violet and blue. And
+this happens by taking the Line C _prt_ B any where between the Ends of
+the Prism HG and EI.
+
+
+_PROP._ IX. PROB. IV.
+
+_By the discovered Properties of Light to explain the Colours of the
+Rain-bow._
+
+[Illustration: FIG. 14.]
+
+This Bow never appears, but where it rains in the Sun-shine, and may be
+made artificially by spouting up Water which may break aloft, and
+scatter into Drops, and fall down like Rain. For the Sun shining upon
+these Drops certainly causes the Bow to appear to a Spectator standing
+in a due Position to the Rain and Sun. And hence it is now agreed upon,
+that this Bow is made by Refraction of the Sun's Light in drops of
+falling Rain. This was understood by some of the Antients, and of late
+more fully discover'd and explain'd by the famous _Antonius de Dominis_
+Archbishop of _Spalato_, in his book _De Radiis Visûs & Lucis_,
+published by his Friend _Bartolus_ at _Venice_, in the Year 1611, and
+written above 20 Years before. For he teaches there how the interior Bow
+is made in round Drops of Rain by two Refractions of the Sun's Light,
+and one Reflexion between them, and the exterior by two Refractions, and
+two sorts of Reflexions between them in each Drop of Water, and proves
+his Explications by Experiments made with a Phial full of Water, and
+with Globes of Glass filled with Water, and placed in the Sun to make
+the Colours of the two Bows appear in them. The same Explication
+_Des-Cartes_ hath pursued in his Meteors, and mended that of the
+exterior Bow. But whilst they understood not the true Origin of Colours,
+it's necessary to pursue it here a little farther. For understanding
+therefore how the Bow is made, let a Drop of Rain, or any other
+spherical transparent Body be represented by the Sphere BNFG, [in _Fig._
+14.] described with the Center C, and Semi-diameter CN. And let AN be
+one of the Sun's Rays incident upon it at N, and thence refracted to F,
+where let it either go out of the Sphere by Refraction towards V, or be
+reflected to G; and at G let it either go out by Refraction to R, or be
+reflected to H; and at H let it go out by Refraction towards S, cutting
+the incident Ray in Y. Produce AN and RG, till they meet in X, and upon
+AX and NF, let fall the Perpendiculars CD and CE, and produce CD till it
+fall upon the Circumference at L. Parallel to the incident Ray AN draw
+the Diameter BQ, and let the Sine of Incidence out of Air into Water be
+to the Sine of Refraction as I to R. Now, if you suppose the Point of
+Incidence N to move from the Point B, continually till it come to L, the
+Arch QF will first increase and then decrease, and so will the Angle AXR
+which the Rays AN and GR contain; and the Arch QF and Angle AXR will be
+biggest when ND is to CN as sqrt(II - RR) to sqrt(3)RR, in which
+case NE will be to ND as 2R to I. Also the Angle AYS, which the Rays AN
+and HS contain will first decrease, and then increase and grow least
+when ND is to CN as sqrt(II - RR) to sqrt(8)RR, in which case NE
+will be to ND, as 3R to I. And so the Angle which the next emergent Ray
+(that is, the emergent Ray after three Reflexions) contains with the
+incident Ray AN will come to its Limit when ND is to CN as sqrt(II -
+RR) to sqrt(15)RR, in which case NE will be to ND as 4R to I. And the
+Angle which the Ray next after that Emergent, that is, the Ray emergent
+after four Reflexions, contains with the Incident, will come to its
+Limit, when ND is to CN as sqrt(II - RR) to sqrt(24)RR, in which
+case NE will be to ND as 5R to I; and so on infinitely, the Numbers 3,
+8, 15, 24, &c. being gather'd by continual Addition of the Terms of the
+arithmetical Progression 3, 5, 7, 9, &c. The Truth of all this
+Mathematicians will easily examine.[M]
+
+Now it is to be observed, that as when the Sun comes to his Tropicks,
+Days increase and decrease but a very little for a great while together;
+so when by increasing the distance CD, these Angles come to their
+Limits, they vary their quantity but very little for some time together,
+and therefore a far greater number of the Rays which fall upon all the
+Points N in the Quadrant BL, shall emerge in the Limits of these Angles,
+than in any other Inclinations. And farther it is to be observed, that
+the Rays which differ in Refrangibility will have different Limits of
+their Angles of Emergence, and by consequence according to their
+different Degrees of Refrangibility emerge most copiously in different
+Angles, and being separated from one another appear each in their proper
+Colours. And what those Angles are may be easily gather'd from the
+foregoing Theorem by Computation.
+
+For in the least refrangible Rays the Sines I and R (as was found above)
+are 108 and 81, and thence by Computation the greatest Angle AXR will be
+found 42 Degrees and 2 Minutes, and the least Angle AYS, 50 Degrees and
+57 Minutes. And in the most refrangible Rays the Sines I and R are 109
+and 81, and thence by Computation the greatest Angle AXR will be found
+40 Degrees and 17 Minutes, and the least Angle AYS 54 Degrees and 7
+Minutes.
+
+Suppose now that O [in _Fig._ 15.] is the Spectator's Eye, and OP a Line
+drawn parallel to the Sun's Rays and let POE, POF, POG, POH, be Angles
+of 40 Degr. 17 Min. 42 Degr. 2 Min. 50 Degr. 57 Min. and 54 Degr. 7 Min.
+respectively, and these Angles turned about their common Side OP, shall
+with their other Sides OE, OF; OG, OH, describe the Verges of two
+Rain-bows AF, BE and CHDG. For if E, F, G, H, be drops placed any where
+in the conical Superficies described by OE, OF, OG, OH, and be
+illuminated by the Sun's Rays SE, SF, SG, SH; the Angle SEO being equal
+to the Angle POE, or 40 Degr. 17 Min. shall be the greatest Angle in
+which the most refrangible Rays can after one Reflexion be refracted to
+the Eye, and therefore all the Drops in the Line OE shall send the most
+refrangible Rays most copiously to the Eye, and thereby strike the
+Senses with the deepest violet Colour in that Region. And in like
+manner the Angle SFO being equal to the Angle POF, or 42 Degr. 2 Min.
+shall be the greatest in which the least refrangible Rays after one
+Reflexion can emerge out of the Drops, and therefore those Rays shall
+come most copiously to the Eye from the Drops in the Line OF, and strike
+the Senses with the deepest red Colour in that Region. And by the same
+Argument, the Rays which have intermediate Degrees of Refrangibility
+shall come most copiously from Drops between E and F, and strike the
+Senses with the intermediate Colours, in the Order which their Degrees
+of Refrangibility require, that is in the Progress from E to F, or from
+the inside of the Bow to the outside in this order, violet, indigo,
+blue, green, yellow, orange, red. But the violet, by the mixture of the
+white Light of the Clouds, will appear faint and incline to purple.
+
+[Illustration: FIG. 15.]
+
+Again, the Angle SGO being equal to the Angle POG, or 50 Gr. 51 Min.
+shall be the least Angle in which the least refrangible Rays can after
+two Reflexions emerge out of the Drops, and therefore the least
+refrangible Rays shall come most copiously to the Eye from the Drops in
+the Line OG, and strike the Sense with the deepest red in that Region.
+And the Angle SHO being equal to the Angle POH, or 54 Gr. 7 Min. shall
+be the least Angle, in which the most refrangible Rays after two
+Reflexions can emerge out of the Drops; and therefore those Rays shall
+come most copiously to the Eye from the Drops in the Line OH, and strike
+the Senses with the deepest violet in that Region. And by the same
+Argument, the Drops in the Regions between G and H shall strike the
+Sense with the intermediate Colours in the Order which their Degrees of
+Refrangibility require, that is, in the Progress from G to H, or from
+the inside of the Bow to the outside in this order, red, orange, yellow,
+green, blue, indigo, violet. And since these four Lines OE, OF, OG, OH,
+may be situated any where in the above-mention'd conical Superficies;
+what is said of the Drops and Colours in these Lines is to be understood
+of the Drops and Colours every where in those Superficies.
+
+Thus shall there be made two Bows of Colours, an interior and stronger,
+by one Reflexion in the Drops, and an exterior and fainter by two; for
+the Light becomes fainter by every Reflexion. And their Colours shall
+lie in a contrary Order to one another, the red of both Bows bordering
+upon the Space GF, which is between the Bows. The Breadth of the
+interior Bow EOF measured cross the Colours shall be 1 Degr. 45 Min. and
+the Breadth of the exterior GOH shall be 3 Degr. 10 Min. and the
+distance between them GOF shall be 8 Gr. 15 Min. the greatest
+Semi-diameter of the innermost, that is, the Angle POF being 42 Gr. 2
+Min. and the least Semi-diameter of the outermost POG, being 50 Gr. 57
+Min. These are the Measures of the Bows, as they would be were the Sun
+but a Point; for by the Breadth of his Body, the Breadth of the Bows
+will be increased, and their Distance decreased by half a Degree, and so
+the breadth of the interior Iris will be 2 Degr. 15 Min. that of the
+exterior 3 Degr. 40 Min. their distance 8 Degr. 25 Min. the greatest
+Semi-diameter of the interior Bow 42 Degr. 17 Min. and the least of the
+exterior 50 Degr. 42 Min. And such are the Dimensions of the Bows in the
+Heavens found to be very nearly, when their Colours appear strong and
+perfect. For once, by such means as I then had, I measured the greatest
+Semi-diameter of the interior Iris about 42 Degrees, and the breadth of
+the red, yellow and green in that Iris 63 or 64 Minutes, besides the
+outmost faint red obscured by the brightness of the Clouds, for which we
+may allow 3 or 4 Minutes more. The breadth of the blue was about 40
+Minutes more besides the violet, which was so much obscured by the
+brightness of the Clouds, that I could not measure its breadth. But
+supposing the breadth of the blue and violet together to equal that of
+the red, yellow and green together, the whole breadth of this Iris will
+be about 2-1/4 Degrees, as above. The least distance between this Iris
+and the exterior Iris was about 8 Degrees and 30 Minutes. The exterior
+Iris was broader than the interior, but so faint, especially on the blue
+side, that I could not measure its breadth distinctly. At another time
+when both Bows appeared more distinct, I measured the breadth of the
+interior Iris 2 Gr. 10´, and the breadth of the red, yellow and green in
+the exterior Iris, was to the breadth of the same Colours in the
+interior as 3 to 2.
+
+This Explication of the Rain-bow is yet farther confirmed by the known
+Experiment (made by _Antonius de Dominis_ and _Des-Cartes_) of hanging
+up any where in the Sun-shine a Glass Globe filled with Water, and
+viewing it in such a posture, that the Rays which come from the Globe to
+the Eye may contain with the Sun's Rays an Angle of either 42 or 50
+Degrees. For if the Angle be about 42 or 43 Degrees, the Spectator
+(suppose at O) shall see a full red Colour in that side of the Globe
+opposed to the Sun as 'tis represented at F, and if that Angle become
+less (suppose by depressing the Globe to E) there will appear other
+Colours, yellow, green and blue successive in the same side of the
+Globe. But if the Angle be made about 50 Degrees (suppose by lifting up
+the Globe to G) there will appear a red Colour in that side of the Globe
+towards the Sun, and if the Angle be made greater (suppose by lifting
+up the Globe to H) the red will turn successively to the other Colours,
+yellow, green and blue. The same thing I have tried, by letting a Globe
+rest, and raising or depressing the Eye, or otherwise moving it to make
+the Angle of a just magnitude.
+
+I have heard it represented, that if the Light of a Candle be refracted
+by a Prism to the Eye; when the blue Colour falls upon the Eye, the
+Spectator shall see red in the Prism, and when the red falls upon the
+Eye he shall see blue; and if this were certain, the Colours of the
+Globe and Rain-bow ought to appear in a contrary order to what we find.
+But the Colours of the Candle being very faint, the mistake seems to
+arise from the difficulty of discerning what Colours fall on the Eye.
+For, on the contrary, I have sometimes had occasion to observe in the
+Sun's Light refracted by a Prism, that the Spectator always sees that
+Colour in the Prism which falls upon his Eye. And the same I have found
+true also in Candle-light. For when the Prism is moved slowly from the
+Line which is drawn directly from the Candle to the Eye, the red appears
+first in the Prism and then the blue, and therefore each of them is seen
+when it falls upon the Eye. For the red passes over the Eye first, and
+then the blue.
+
+The Light which comes through drops of Rain by two Refractions without
+any Reflexion, ought to appear strongest at the distance of about 26
+Degrees from the Sun, and to decay gradually both ways as the distance
+from him increases and decreases. And the same is to be understood of
+Light transmitted through spherical Hail-stones. And if the Hail be a
+little flatted, as it often is, the Light transmitted may grow so strong
+at a little less distance than that of 26 Degrees, as to form a Halo
+about the Sun or Moon; which Halo, as often as the Hail-stones are duly
+figured may be colour'd, and then it must be red within by the least
+refrangible Rays, and blue without by the most refrangible ones,
+especially if the Hail-stones have opake Globules of Snow in their
+center to intercept the Light within the Halo (as _Hugenius_ has
+observ'd) and make the inside thereof more distinctly defined than it
+would otherwise be. For such Hail-stones, though spherical, by
+terminating the Light by the Snow, may make a Halo red within and
+colourless without, and darker in the red than without, as Halos used to
+be. For of those Rays which pass close by the Snow the Rubriform will be
+least refracted, and so come to the Eye in the directest Lines.
+
+The Light which passes through a drop of Rain after two Refractions, and
+three or more Reflexions, is scarce strong enough to cause a sensible
+Bow; but in those Cylinders of Ice by which _Hugenius_ explains the
+_Parhelia_, it may perhaps be sensible.
+
+
+_PROP._ X. PROB. V.
+
+_By the discovered Properties of Light to explain the permanent Colours
+of Natural Bodies._
+
+These Colours arise from hence, that some natural Bodies reflect some
+sorts of Rays, others other sorts more copiously than the rest. Minium
+reflects the least refrangible or red-making Rays most copiously, and
+thence appears red. Violets reflect the most refrangible most copiously,
+and thence have their Colour, and so of other Bodies. Every Body
+reflects the Rays of its own Colour more copiously than the rest, and
+from their excess and predominance in the reflected Light has its
+Colour.
+
+_Exper._ 17. For if in the homogeneal Lights obtained by the solution of
+the Problem proposed in the fourth Proposition of the first Part of this
+Book, you place Bodies of several Colours, you will find, as I have
+done, that every Body looks most splendid and luminous in the Light of
+its own Colour. Cinnaber in the homogeneal red Light is most
+resplendent, in the green Light it is manifestly less resplendent, and
+in the blue Light still less. Indigo in the violet blue Light is most
+resplendent, and its splendor is gradually diminish'd, as it is removed
+thence by degrees through the green and yellow Light to the red. By a
+Leek the green Light, and next that the blue and yellow which compound
+green, are more strongly reflected than the other Colours red and
+violet, and so of the rest. But to make these Experiments the more
+manifest, such Bodies ought to be chosen as have the fullest and most
+vivid Colours, and two of those Bodies are to be compared together.
+Thus, for instance, if Cinnaber and _ultra_-marine blue, or some other
+full blue be held together in the red homogeneal Light, they will both
+appear red, but the Cinnaber will appear of a strongly luminous and
+resplendent red, and the _ultra_-marine blue of a faint obscure and dark
+red; and if they be held together in the blue homogeneal Light, they
+will both appear blue, but the _ultra_-marine will appear of a strongly
+luminous and resplendent blue, and the Cinnaber of a faint and dark
+blue. Which puts it out of dispute that the Cinnaber reflects the red
+Light much more copiously than the _ultra_-marine doth, and the
+_ultra_-marine reflects the blue Light much more copiously than the
+Cinnaber doth. The same Experiment may be tried successfully with red
+Lead and Indigo, or with any other two colour'd Bodies, if due allowance
+be made for the different strength or weakness of their Colour and
+Light.
+
+And as the reason of the Colours of natural Bodies is evident by these
+Experiments, so it is farther confirmed and put past dispute by the two
+first Experiments of the first Part, whereby 'twas proved in such Bodies
+that the reflected Lights which differ in Colours do differ also in
+degrees of Refrangibility. For thence it's certain, that some Bodies
+reflect the more refrangible, others the less refrangible Rays more
+copiously.
+
+And that this is not only a true reason of these Colours, but even the
+only reason, may appear farther from this Consideration, that the Colour
+of homogeneal Light cannot be changed by the Reflexion of natural
+Bodies.
+
+For if Bodies by Reflexion cannot in the least change the Colour of any
+one sort of Rays, they cannot appear colour'd by any other means than by
+reflecting those which either are of their own Colour, or which by
+mixture must produce it.
+
+But in trying Experiments of this kind care must be had that the Light
+be sufficiently homogeneal. For if Bodies be illuminated by the ordinary
+prismatick Colours, they will appear neither of their own Day-light
+Colours, nor of the Colour of the Light cast on them, but of some middle
+Colour between both, as I have found by Experience. Thus red Lead (for
+instance) illuminated with the ordinary prismatick green will not appear
+either red or green, but orange or yellow, or between yellow and green,
+accordingly as the green Light by which 'tis illuminated is more or less
+compounded. For because red Lead appears red when illuminated with white
+Light, wherein all sorts of Rays are equally mix'd, and in the green
+Light all sorts of Rays are not equally mix'd, the Excess of the
+yellow-making, green-making and blue-making Rays in the incident green
+Light, will cause those Rays to abound so much in the reflected Light,
+as to draw the Colour from red towards their Colour. And because the red
+Lead reflects the red-making Rays most copiously in proportion to their
+number, and next after them the orange-making and yellow-making Rays;
+these Rays in the reflected Light will be more in proportion to the
+Light than they were in the incident green Light, and thereby will draw
+the reflected Light from green towards their Colour. And therefore the
+red Lead will appear neither red nor green, but of a Colour between
+both.
+
+In transparently colour'd Liquors 'tis observable, that their Colour
+uses to vary with their thickness. Thus, for instance, a red Liquor in a
+conical Glass held between the Light and the Eye, looks of a pale and
+dilute yellow at the bottom where 'tis thin, and a little higher where
+'tis thicker grows orange, and where 'tis still thicker becomes red, and
+where 'tis thickest the red is deepest and darkest. For it is to be
+conceiv'd that such a Liquor stops the indigo-making and violet-making
+Rays most easily, the blue-making Rays more difficultly, the
+green-making Rays still more difficultly, and the red-making most
+difficultly: And that if the thickness of the Liquor be only so much as
+suffices to stop a competent number of the violet-making and
+indigo-making Rays, without diminishing much the number of the rest, the
+rest must (by _Prop._ 6. _Part_ 2.) compound a pale yellow. But if the
+Liquor be so much thicker as to stop also a great number of the
+blue-making Rays, and some of the green-making, the rest must compound
+an orange; and where it is so thick as to stop also a great number of
+the green-making and a considerable number of the yellow-making, the
+rest must begin to compound a red, and this red must grow deeper and
+darker as the yellow-making and orange-making Rays are more and more
+stopp'd by increasing the thickness of the Liquor, so that few Rays
+besides the red-making can get through.
+
+Of this kind is an Experiment lately related to me by Mr. _Halley_, who,
+in diving deep into the Sea in a diving Vessel, found in a clear
+Sun-shine Day, that when he was sunk many Fathoms deep into the Water
+the upper part of his Hand on which the Sun shone directly through the
+Water and through a small Glass Window in the Vessel appeared of a red
+Colour, like that of a Damask Rose, and the Water below and the under
+part of his Hand illuminated by Light reflected from the Water below
+look'd green. For thence it may be gather'd, that the Sea-Water reflects
+back the violet and blue-making Rays most easily, and lets the
+red-making Rays pass most freely and copiously to great Depths. For
+thereby the Sun's direct Light at all great Depths, by reason of the
+predominating red-making Rays, must appear red; and the greater the
+Depth is, the fuller and intenser must that red be. And at such Depths
+as the violet-making Rays scarce penetrate unto, the blue-making,
+green-making, and yellow-making Rays being reflected from below more
+copiously than the red-making ones, must compound a green.
+
+Now, if there be two Liquors of full Colours, suppose a red and blue,
+and both of them so thick as suffices to make their Colours sufficiently
+full; though either Liquor be sufficiently transparent apart, yet will
+you not be able to see through both together. For, if only the
+red-making Rays pass through one Liquor, and only the blue-making
+through the other, no Rays can pass through both. This Mr. _Hook_ tried
+casually with Glass Wedges filled with red and blue Liquors, and was
+surprized at the unexpected Event, the reason of it being then unknown;
+which makes me trust the more to his Experiment, though I have not tried
+it my self. But he that would repeat it, must take care the Liquors be
+of very good and full Colours.
+
+Now, whilst Bodies become coloured by reflecting or transmitting this or
+that sort of Rays more copiously than the rest, it is to be conceived
+that they stop and stifle in themselves the Rays which they do not
+reflect or transmit. For, if Gold be foliated and held between your Eye
+and the Light, the Light looks of a greenish blue, and therefore massy
+Gold lets into its Body the blue-making Rays to be reflected to and fro
+within it till they be stopp'd and stifled, whilst it reflects the
+yellow-making outwards, and thereby looks yellow. And much after the
+same manner that Leaf Gold is yellow by reflected, and blue by
+transmitted Light, and massy Gold is yellow in all Positions of the Eye;
+there are some Liquors, as the Tincture of _Lignum Nephriticum_, and
+some sorts of Glass which transmit one sort of Light most copiously, and
+reflect another sort, and thereby look of several Colours, according to
+the Position of the Eye to the Light. But, if these Liquors or Glasses
+were so thick and massy that no Light could get through them, I question
+not but they would like all other opake Bodies appear of one and the
+same Colour in all Positions of the Eye, though this I cannot yet affirm
+by Experience. For all colour'd Bodies, so far as my Observation
+reaches, may be seen through if made sufficiently thin, and therefore
+are in some measure transparent, and differ only in degrees of
+Transparency from tinged transparent Liquors; these Liquors, as well as
+those Bodies, by a sufficient Thickness becoming opake. A transparent
+Body which looks of any Colour by transmitted Light, may also look of
+the same Colour by reflected Light, the Light of that Colour being
+reflected by the farther Surface of the Body, or by the Air beyond it.
+And then the reflected Colour will be diminished, and perhaps cease, by
+making the Body very thick, and pitching it on the backside to diminish
+the Reflexion of its farther Surface, so that the Light reflected from
+the tinging Particles may predominate. In such Cases, the Colour of the
+reflected Light will be apt to vary from that of the Light transmitted.
+But whence it is that tinged Bodies and Liquors reflect some sort of
+Rays, and intromit or transmit other sorts, shall be said in the next
+Book. In this Proposition I content my self to have put it past dispute,
+that Bodies have such Properties, and thence appear colour'd.
+
+
+_PROP._ XI. PROB. VI.
+
+_By mixing colour'd Lights to compound a beam of Light of the same
+Colour and Nature with a beam of the Sun's direct Light, and therein to
+experience the Truth of the foregoing Propositions._
+
+[Illustration: FIG. 16.]
+
+Let ABC _abc_ [in _Fig._ 16.] represent a Prism, by which the Sun's
+Light let into a dark Chamber through the Hole F, may be refracted
+towards the Lens MN, and paint upon it at _p_, _q_, _r_, _s_, and _t_,
+the usual Colours violet, blue, green, yellow, and red, and let the
+diverging Rays by the Refraction of this Lens converge again towards X,
+and there, by the mixture of all those their Colours, compound a white
+according to what was shewn above. Then let another Prism DEG _deg_,
+parallel to the former, be placed at X, to refract that white Light
+upwards towards Y. Let the refracting Angles of the Prisms, and their
+distances from the Lens be equal, so that the Rays which converged from
+the Lens towards X, and without Refraction, would there have crossed and
+diverged again, may by the Refraction of the second Prism be reduced
+into Parallelism and diverge no more. For then those Rays will recompose
+a beam of white Light XY. If the refracting Angle of either Prism be the
+bigger, that Prism must be so much the nearer to the Lens. You will know
+when the Prisms and the Lens are well set together, by observing if the
+beam of Light XY, which comes out of the second Prism be perfectly white
+to the very edges of the Light, and at all distances from the Prism
+continue perfectly and totally white like a beam of the Sun's Light. For
+till this happens, the Position of the Prisms and Lens to one another
+must be corrected; and then if by the help of a long beam of Wood, as is
+represented in the Figure, or by a Tube, or some other such Instrument,
+made for that Purpose, they be made fast in that Situation, you may try
+all the same Experiments in this compounded beam of Light XY, which have
+been made in the Sun's direct Light. For this compounded beam of Light
+has the same appearance, and is endow'd with all the same Properties
+with a direct beam of the Sun's Light, so far as my Observation reaches.
+And in trying Experiments in this beam you may by stopping any of the
+Colours, _p_, _q_, _r_, _s_, and _t_, at the Lens, see how the Colours
+produced in the Experiments are no other than those which the Rays had
+at the Lens before they entered the Composition of this Beam: And by
+consequence, that they arise not from any new Modifications of the Light
+by Refractions and Reflexions, but from the various Separations and
+Mixtures of the Rays originally endow'd with their colour-making
+Qualities.
+
+So, for instance, having with a Lens 4-1/4 Inches broad, and two Prisms
+on either hand 6-1/4 Feet distant from the Lens, made such a beam of
+compounded Light; to examine the reason of the Colours made by Prisms, I
+refracted this compounded beam of Light XY with another Prism HIK _kh_,
+and thereby cast the usual Prismatick Colours PQRST upon the Paper LV
+placed behind. And then by stopping any of the Colours _p_, _q_, _r_,
+_s_, _t_, at the Lens, I found that the same Colour would vanish at the
+Paper. So if the Purple _p_ was stopp'd at the Lens, the Purple P upon
+the Paper would vanish, and the rest of the Colours would remain
+unalter'd, unless perhaps the blue, so far as some purple latent in it
+at the Lens might be separated from it by the following Refractions. And
+so by intercepting the green upon the Lens, the green R upon the Paper
+would vanish, and so of the rest; which plainly shews, that as the white
+beam of Light XY was compounded of several Lights variously colour'd at
+the Lens, so the Colours which afterwards emerge out of it by new
+Refractions are no other than those of which its Whiteness was
+compounded. The Refraction of the Prism HIK _kh_ generates the Colours
+PQRST upon the Paper, not by changing the colorific Qualities of the
+Rays, but by separating the Rays which had the very same colorific
+Qualities before they enter'd the Composition of the refracted beam of
+white Light XY. For otherwise the Rays which were of one Colour at the
+Lens might be of another upon the Paper, contrary to what we find.
+
+So again, to examine the reason of the Colours of natural Bodies, I
+placed such Bodies in the Beam of Light XY, and found that they all
+appeared there of those their own Colours which they have in Day-light,
+and that those Colours depend upon the Rays which had the same Colours
+at the Lens before they enter'd the Composition of that beam. Thus, for
+instance, Cinnaber illuminated by this beam appears of the same red
+Colour as in Day-light; and if at the Lens you intercept the
+green-making and blue-making Rays, its redness will become more full and
+lively: But if you there intercept the red-making Rays, it will not any
+longer appear red, but become yellow or green, or of some other Colour,
+according to the sorts of Rays which you do not intercept. So Gold in
+this Light XY appears of the same yellow Colour as in Day-light, but by
+intercepting at the Lens a due Quantity of the yellow-making Rays it
+will appear white like Silver (as I have tried) which shews that its
+yellowness arises from the Excess of the intercepted Rays tinging that
+Whiteness with their Colour when they are let pass. So the Infusion of
+_Lignum Nephriticum_ (as I have also tried) when held in this beam of
+Light XY, looks blue by the reflected Part of the Light, and red by the
+transmitted Part of it, as when 'tis view'd in Day-light; but if you
+intercept the blue at the Lens the Infusion will lose its reflected blue
+Colour, whilst its transmitted red remains perfect, and by the loss of
+some blue-making Rays, wherewith it was allay'd, becomes more intense
+and full. And, on the contrary, if the red and orange-making Rays be
+intercepted at the Lens, the Infusion will lose its transmitted red,
+whilst its blue will remain and become more full and perfect. Which
+shews, that the Infusion does not tinge the Rays with blue and red, but
+only transmits those most copiously which were red-making before, and
+reflects those most copiously which were blue-making before. And after
+the same manner may the Reasons of other Phænomena be examined, by
+trying them in this artificial beam of Light XY.
+
+FOOTNOTES:
+
+[I] See p. 59.
+
+[J] _See our_ Author's Lect. Optic. _Part_ II. _Sect._ II. _p._ 239.
+
+[K] _As is done in our_ Author's Lect. Optic. _Part_ I. _Sect._ III.
+_and_ IV. _and Part_ II. _Sect._ II.
+
+[L] _See our_ Author's Lect. Optic. _Part_ II. _Sect._ II. _pag._ 269,
+&c.
+
+[M] _This is demonstrated in our_ Author's Lect. Optic. _Part_ I.
+_Sect._ IV. _Prop._ 35 _and_ 36.
+
+
+
+
+THE
+
+SECOND BOOK
+
+OF
+
+OPTICKS
+
+
+
+
+_PART I._
+
+_Observations concerning the Reflexions, Refractions, and Colours of
+thin transparent Bodies._
+
+
+It has been observed by others, that transparent Substances, as Glass,
+Water, Air, &c. when made very thin by being blown into Bubbles, or
+otherwise formed into Plates, do exhibit various Colours according to
+their various thinness, altho' at a greater thickness they appear very
+clear and colourless. In the former Book I forbore to treat of these
+Colours, because they seemed of a more difficult Consideration, and were
+not necessary for establishing the Properties of Light there discoursed
+of. But because they may conduce to farther Discoveries for compleating
+the Theory of Light, especially as to the constitution of the parts of
+natural Bodies, on which their Colours or Transparency depend; I have
+here set down an account of them. To render this Discourse short and
+distinct, I have first described the principal of my Observations, and
+then consider'd and made use of them. The Observations are these.
+
+_Obs._ 1. Compressing two Prisms hard together that their sides (which
+by chance were a very little convex) might somewhere touch one another:
+I found the place in which they touched to become absolutely
+transparent, as if they had there been one continued piece of Glass. For
+when the Light fell so obliquely on the Air, which in other places was
+between them, as to be all reflected; it seemed in that place of contact
+to be wholly transmitted, insomuch that when look'd upon, it appeared
+like a black or dark spot, by reason that little or no sensible Light
+was reflected from thence, as from other places; and when looked through
+it seemed (as it were) a hole in that Air which was formed into a thin
+Plate, by being compress'd between the Glasses. And through this hole
+Objects that were beyond might be seen distinctly, which could not at
+all be seen through other parts of the Glasses where the Air was
+interjacent. Although the Glasses were a little convex, yet this
+transparent spot was of a considerable breadth, which breadth seemed
+principally to proceed from the yielding inwards of the parts of the
+Glasses, by reason of their mutual pressure. For by pressing them very
+hard together it would become much broader than otherwise.
+
+_Obs._ 2. When the Plate of Air, by turning the Prisms about their
+common Axis, became so little inclined to the incident Rays, that some
+of them began to be transmitted, there arose in it many slender Arcs of
+Colours which at first were shaped almost like the Conchoid, as you see
+them delineated in the first Figure. And by continuing the Motion of the
+Prisms, these Arcs increased and bended more and more about the said
+transparent spot, till they were compleated into Circles or Rings
+incompassing it, and afterwards continually grew more and more
+contracted.
+
+[Illustration: FIG. 1.]
+
+These Arcs at their first appearance were of a violet and blue Colour,
+and between them were white Arcs of Circles, which presently by
+continuing the Motion of the Prisms became a little tinged in their
+inward Limbs with red and yellow, and to their outward Limbs the blue
+was adjacent. So that the order of these Colours from the central dark
+spot, was at that time white, blue, violet; black, red, orange, yellow,
+white, blue, violet, &c. But the yellow and red were much fainter than
+the blue and violet.
+
+The Motion of the Prisms about their Axis being continued, these Colours
+contracted more and more, shrinking towards the whiteness on either
+side of it, until they totally vanished into it. And then the Circles in
+those parts appear'd black and white, without any other Colours
+intermix'd. But by farther moving the Prisms about, the Colours again
+emerged out of the whiteness, the violet and blue at its inward Limb,
+and at its outward Limb the red and yellow. So that now their order from
+the central Spot was white, yellow, red; black; violet, blue, white,
+yellow, red, &c. contrary to what it was before.
+
+_Obs._ 3. When the Rings or some parts of them appeared only black and
+white, they were very distinct and well defined, and the blackness
+seemed as intense as that of the central Spot. Also in the Borders of
+the Rings, where the Colours began to emerge out of the whiteness, they
+were pretty distinct, which made them visible to a very great multitude.
+I have sometimes number'd above thirty Successions (reckoning every
+black and white Ring for one Succession) and seen more of them, which by
+reason of their smalness I could not number. But in other Positions of
+the Prisms, at which the Rings appeared of many Colours, I could not
+distinguish above eight or nine of them, and the Exterior of those were
+very confused and dilute.
+
+In these two Observations to see the Rings distinct, and without any
+other Colour than Black and white, I found it necessary to hold my Eye
+at a good distance from them. For by approaching nearer, although in the
+same inclination of my Eye to the Plane of the Rings, there emerged a
+bluish Colour out of the white, which by dilating it self more and more
+into the black, render'd the Circles less distinct, and left the white a
+little tinged with red and yellow. I found also by looking through a
+slit or oblong hole, which was narrower than the pupil of my Eye, and
+held close to it parallel to the Prisms, I could see the Circles much
+distincter and visible to a far greater number than otherwise.
+
+_Obs._ 4. To observe more nicely the order of the Colours which arose
+out of the white Circles as the Rays became less and less inclined to
+the Plate of Air; I took two Object-glasses, the one a Plano-convex for
+a fourteen Foot Telescope, and the other a large double Convex for one
+of about fifty Foot; and upon this, laying the other with its plane side
+downwards, I pressed them slowly together, to make the Colours
+successively emerge in the middle of the Circles, and then slowly lifted
+the upper Glass from the lower to make them successively vanish again in
+the same place. The Colour, which by pressing the Glasses together,
+emerged last in the middle of the other Colours, would upon its first
+appearance look like a Circle of a Colour almost uniform from the
+circumference to the center and by compressing the Glasses still more,
+grow continually broader until a new Colour emerged in its center, and
+thereby it became a Ring encompassing that new Colour. And by
+compressing the Glasses still more, the diameter of this Ring would
+increase, and the breadth of its Orbit or Perimeter decrease until
+another new Colour emerged in the center of the last: And so on until a
+third, a fourth, a fifth, and other following new Colours successively
+emerged there, and became Rings encompassing the innermost Colour, the
+last of which was the black Spot. And, on the contrary, by lifting up
+the upper Glass from the lower, the diameter of the Rings would
+decrease, and the breadth of their Orbit increase, until their Colours
+reached successively to the center; and then they being of a
+considerable breadth, I could more easily discern and distinguish their
+Species than before. And by this means I observ'd their Succession and
+Quantity to be as followeth.
+
+Next to the pellucid central Spot made by the contact of the Glasses
+succeeded blue, white, yellow, and red. The blue was so little in
+quantity, that I could not discern it in the Circles made by the Prisms,
+nor could I well distinguish any violet in it, but the yellow and red
+were pretty copious, and seemed about as much in extent as the white,
+and four or five times more than the blue. The next Circuit in order of
+Colours immediately encompassing these were violet, blue, green, yellow,
+and red: and these were all of them copious and vivid, excepting the
+green, which was very little in quantity, and seemed much more faint and
+dilute than the other Colours. Of the other four, the violet was the
+least in extent, and the blue less than the yellow or red. The third
+Circuit or Order was purple, blue, green, yellow, and red; in which the
+purple seemed more reddish than the violet in the former Circuit, and
+the green was much more conspicuous, being as brisk and copious as any
+of the other Colours, except the yellow, but the red began to be a
+little faded, inclining very much to purple. After this succeeded the
+fourth Circuit of green and red. The green was very copious and lively,
+inclining on the one side to blue, and on the other side to yellow. But
+in this fourth Circuit there was neither violet, blue, nor yellow, and
+the red was very imperfect and dirty. Also the succeeding Colours became
+more and more imperfect and dilute, till after three or four revolutions
+they ended in perfect whiteness. Their form, when the Glasses were most
+compress'd so as to make the black Spot appear in the center, is
+delineated in the second Figure; where _a_, _b_, _c_, _d_, _e_: _f_,
+_g_, _h_, _i_, _k_: _l_, _m_, _n_, _o_, _p_: _q_, _r_: _s_, _t_: _v_,
+_x_: _y_, _z_, denote the Colours reckon'd in order from the center,
+black, blue, white, yellow, red: violet, blue, green, yellow, red:
+purple, blue, green, yellow, red: green, red: greenish blue, red:
+greenish blue, pale red: greenish blue, reddish white.
+
+[Illustration: FIG. 2.]
+
+_Obs._ 5. To determine the interval of the Glasses, or thickness of the
+interjacent Air, by which each Colour was produced, I measured the
+Diameters of the first six Rings at the most lucid part of their Orbits,
+and squaring them, I found their Squares to be in the arithmetical
+Progression of the odd Numbers, 1, 3, 5, 7, 9, 11. And since one of
+these Glasses was plane, and the other spherical, their Intervals at
+those Rings must be in the same Progression. I measured also the
+Diameters of the dark or faint Rings between the more lucid Colours, and
+found their Squares to be in the arithmetical Progression of the even
+Numbers, 2, 4, 6, 8, 10, 12. And it being very nice and difficult to
+take these measures exactly; I repeated them divers times at divers
+parts of the Glasses, that by their Agreement I might be confirmed in
+them. And the same method I used in determining some others of the
+following Observations.
+
+_Obs._ 6. The Diameter of the sixth Ring at the most lucid part of its
+Orbit was 58/100 parts of an Inch, and the Diameter of the Sphere on
+which the double convex Object-glass was ground was about 102 Feet, and
+hence I gathered the thickness of the Air or Aereal Interval of the
+Glasses at that Ring. But some time after, suspecting that in making
+this Observation I had not determined the Diameter of the Sphere with
+sufficient accurateness, and being uncertain whether the Plano-convex
+Glass was truly plane, and not something concave or convex on that side
+which I accounted plane; and whether I had not pressed the Glasses
+together, as I often did, to make them touch; (For by pressing such
+Glasses together their parts easily yield inwards, and the Rings thereby
+become sensibly broader than they would be, did the Glasses keep their
+Figures.) I repeated the Experiment, and found the Diameter of the sixth
+lucid Ring about 55/100 parts of an Inch. I repeated the Experiment also
+with such an Object-glass of another Telescope as I had at hand. This
+was a double Convex ground on both sides to one and the same Sphere, and
+its Focus was distant from it 83-2/5 Inches. And thence, if the Sines of
+Incidence and Refraction of the bright yellow Light be assumed in
+proportion as 11 to 17, the Diameter of the Sphere to which the Glass
+was figured will by computation be found 182 Inches. This Glass I laid
+upon a flat one, so that the black Spot appeared in the middle of the
+Rings of Colours without any other Pressure than that of the weight of
+the Glass. And now measuring the Diameter of the fifth dark Circle as
+accurately as I could, I found it the fifth part of an Inch precisely.
+This Measure was taken with the points of a pair of Compasses on the
+upper Surface on the upper Glass, and my Eye was about eight or nine
+Inches distance from the Glass, almost perpendicularly over it, and the
+Glass was 1/6 of an Inch thick, and thence it is easy to collect that
+the true Diameter of the Ring between the Glasses was greater than its
+measur'd Diameter above the Glasses in the Proportion of 80 to 79, or
+thereabouts, and by consequence equal to 16/79 parts of an Inch, and its
+true Semi-diameter equal to 8/79 parts. Now as the Diameter of the
+Sphere (182 Inches) is to the Semi-diameter of this fifth dark Ring
+(8/79 parts of an Inch) so is this Semi-diameter to the thickness of the
+Air at this fifth dark Ring; which is therefore 32/567931 or
+100/1774784. Parts of an Inch; and the fifth Part thereof, _viz._ the
+1/88739 Part of an Inch, is the Thickness of the Air at the first of
+these dark Rings.
+
+The same Experiment I repeated with another double convex Object-glass
+ground on both sides to one and the same Sphere. Its Focus was distant
+from it 168-1/2 Inches, and therefore the Diameter of that Sphere was
+184 Inches. This Glass being laid upon the same plain Glass, the
+Diameter of the fifth of the dark Rings, when the black Spot in their
+Center appear'd plainly without pressing the Glasses, was by the measure
+of the Compasses upon the upper Glass 121/600 Parts of an Inch, and by
+consequence between the Glasses it was 1222/6000: For the upper Glass
+was 1/8 of an Inch thick, and my Eye was distant from it 8 Inches. And a
+third proportional to half this from the Diameter of the Sphere is
+5/88850 Parts of an Inch. This is therefore the Thickness of the Air at
+this Ring, and a fifth Part thereof, _viz._ the 1/88850th Part of an
+Inch is the Thickness thereof at the first of the Rings, as above.
+
+I tried the same Thing, by laying these Object-glasses upon flat Pieces
+of a broken Looking-glass, and found the same Measures of the Rings:
+Which makes me rely upon them till they can be determin'd more
+accurately by Glasses ground to larger Spheres, though in such Glasses
+greater care must be taken of a true Plane.
+
+These Dimensions were taken, when my Eye was placed almost
+perpendicularly over the Glasses, being about an Inch, or an Inch and a
+quarter, distant from the incident Rays, and eight Inches distant from
+the Glass; so that the Rays were inclined to the Glass in an Angle of
+about four Degrees. Whence by the following Observation you will
+understand, that had the Rays been perpendicular to the Glasses, the
+Thickness of the Air at these Rings would have been less in the
+Proportion of the Radius to the Secant of four Degrees, that is, of
+10000 to 10024. Let the Thicknesses found be therefore diminish'd in
+this Proportion, and they will become 1/88952 and 1/89063, or (to use
+the nearest round Number) the 1/89000th Part of an Inch. This is the
+Thickness of the Air at the darkest Part of the first dark Ring made by
+perpendicular Rays; and half this Thickness multiplied by the
+Progression, 1, 3, 5, 7, 9, 11, &c. gives the Thicknesses of the Air at
+the most luminous Parts of all the brightest Rings, _viz._ 1/178000,
+3/178000, 5/178000, 7/178000, &c. their arithmetical Means 2/178000,
+4/178000, 6/178000, &c. being its Thicknesses at the darkest Parts of
+all the dark ones.
+
+_Obs._ 7. The Rings were least, when my Eye was placed perpendicularly
+over the Glasses in the Axis of the Rings: And when I view'd them
+obliquely they became bigger, continually swelling as I removed my Eye
+farther from the Axis. And partly by measuring the Diameter of the same
+Circle at several Obliquities of my Eye, partly by other Means, as also
+by making use of the two Prisms for very great Obliquities, I found its
+Diameter, and consequently the Thickness of the Air at its Perimeter in
+all those Obliquities to be very nearly in the Proportions express'd in
+this Table.
+
+-------------------+--------------------+----------+----------
+Angle of Incidence |Angle of Refraction |Diameter  |Thickness
+        on         |         into       |  of the  |   of the
+      the Air.     |       the Air.     |   Ring.  |    Air.
+-------------------+--------------------+----------+----------
+    Deg.    Min.   |                    |          |
+                   |                    |          |
+    00      00     |     00      00     |  10      |  10
+                   |                    |          |
+    06      26     |     10      00     |  10-1/13 |  10-2/13
+                   |                    |          |
+    12      45     |     20      00     |  10-1/3  |  10-2/3
+                   |                    |          |
+    18      49     |     30      00     |  10-3/4  |  11-1/2
+                   |                    |          |
+    24      30     |     40      00     |  11-2/5  |  13
+                   |                    |          |
+    29      37     |     50      00     |  12-1/2  |  15-1/2
+                   |                    |          |
+    33      58     |     60      00     |  14      |  20
+                   |                    |          |
+    35      47     |     65      00     |  15-1/4  |  23-1/4
+                   |                    |          |
+    37      19     |     70      00     |  16-4/5  |  28-1/4
+                   |                    |          |
+    38      33     |     75      00     |  19-1/4  |  37
+                   |                    |          |
+    39      27     |     80      00     |  22-6/7  |  52-1/4
+                   |                    |          |
+    40      00     |     85      00     |  29      |  84-1/12
+                   |                    |          |
+    40      11     |     90      00     |  35      | 122-1/2
+-------------------+--------------------+----------+----------
+
+In the two first Columns are express'd the Obliquities of the incident
+and emergent Rays to the Plate of the Air, that is, their Angles of
+Incidence and Refraction. In the third Column the Diameter of any
+colour'd Ring at those Obliquities is expressed in Parts, of which ten
+constitute that Diameter when the Rays are perpendicular. And in the
+fourth Column the Thickness of the Air at the Circumference of that Ring
+is expressed in Parts, of which also ten constitute its Thickness when
+the Rays are perpendicular.
+
+And from these Measures I seem to gather this Rule: That the Thickness
+of the Air is proportional to the Secant of an Angle, whose Sine is a
+certain mean Proportional between the Sines of Incidence and Refraction.
+And that mean Proportional, so far as by these Measures I can determine
+it, is the first of an hundred and six arithmetical mean Proportionals
+between those Sines counted from the bigger Sine, that is, from the Sine
+of Refraction when the Refraction is made out of the Glass into the
+Plate of Air, or from the Sine of Incidence when the Refraction is made
+out of the Plate of Air into the Glass.
+
+_Obs._ 8. The dark Spot in the middle of the Rings increased also by the
+Obliquation of the Eye, although almost insensibly. But, if instead of
+the Object-glasses the Prisms were made use of, its Increase was more
+manifest when viewed so obliquely that no Colours appear'd about it. It
+was least when the Rays were incident most obliquely on the interjacent
+Air, and as the obliquity decreased it increased more and more until the
+colour'd Rings appear'd, and then decreased again, but not so much as it
+increased before. And hence it is evident, that the Transparency was
+not only at the absolute Contact of the Glasses, but also where they had
+some little Interval. I have sometimes observed the Diameter of that
+Spot to be between half and two fifth parts of the Diameter of the
+exterior Circumference of the red in the first Circuit or Revolution of
+Colours when view'd almost perpendicularly; whereas when view'd
+obliquely it hath wholly vanish'd and become opake and white like the
+other parts of the Glass; whence it may be collected that the Glasses
+did then scarcely, or not at all, touch one another, and that their
+Interval at the perimeter of that Spot when view'd perpendicularly was
+about a fifth or sixth part of their Interval at the circumference of
+the said red.
+
+_Obs._ 9. By looking through the two contiguous Object-glasses, I found
+that the interjacent Air exhibited Rings of Colours, as well by
+transmitting Light as by reflecting it. The central Spot was now white,
+and from it the order of the Colours were yellowish red; black, violet,
+blue, white, yellow, red; violet, blue, green, yellow, red, &c. But
+these Colours were very faint and dilute, unless when the Light was
+trajected very obliquely through the Glasses: For by that means they
+became pretty vivid. Only the first yellowish red, like the blue in the
+fourth Observation, was so little and faint as scarcely to be discern'd.
+Comparing the colour'd Rings made by Reflexion, with these made by
+transmission of the Light; I found that white was opposite to black, red
+to blue, yellow to violet, and green to a Compound of red and violet.
+That is, those parts of the Glass were black when looked through, which
+when looked upon appeared white, and on the contrary. And so those which
+in one case exhibited blue, did in the other case exhibit red. And the
+like of the other Colours. The manner you have represented in the third
+Figure, where AB, CD, are the Surfaces of the Glasses contiguous at E,
+and the black Lines between them are their Distances in arithmetical
+Progression, and the Colours written above are seen by reflected Light,
+and those below by Light transmitted (p. 209).
+
+_Obs._ 10. Wetting the Object-glasses a little at their edges, the Water
+crept in slowly between them, and the Circles thereby became less and
+the Colours more faint: Insomuch that as the Water crept along, one half
+of them at which it first arrived would appear broken off from the other
+half, and contracted into a less Room. By measuring them I found the
+Proportions of their Diameters to the Diameters of the like Circles made
+by Air to be about seven to eight, and consequently the Intervals of the
+Glasses at like Circles, caused by those two Mediums Water and Air, are
+as about three to four. Perhaps it may be a general Rule, That if any
+other Medium more or less dense than Water be compress'd between the
+Glasses, their Intervals at the Rings caused thereby will be to their
+Intervals caused by interjacent Air, as the Sines are which measure the
+Refraction made out of that Medium into Air.
+
+_Obs._ 11. When the Water was between the Glasses, if I pressed the
+upper Glass variously at its edges to make the Rings move nimbly from
+one place to another, a little white Spot would immediately follow the
+center of them, which upon creeping in of the ambient Water into that
+place would presently vanish. Its appearance was such as interjacent Air
+would have caused, and it exhibited the same Colours. But it was not
+air, for where any Bubbles of Air were in the Water they would not
+vanish. The Reflexion must have rather been caused by a subtiler Medium,
+which could recede through the Glasses at the creeping in of the Water.
+
+_Obs._ 12. These Observations were made in the open Air. But farther to
+examine the Effects of colour'd Light falling on the Glasses, I darken'd
+the Room, and view'd them by Reflexion of the Colours of a Prism cast on
+a Sheet of white Paper, my Eye being so placed that I could see the
+colour'd Paper by Reflexion in the Glasses, as in a Looking-glass. And
+by this means the Rings became distincter and visible to a far greater
+number than in the open Air. I have sometimes seen more than twenty of
+them, whereas in the open Air I could not discern above eight or nine.
+
+[Illustration: FIG. 3.]
+
+_Obs._ 13. Appointing an Assistant to move the Prism to and fro about
+its Axis, that all the Colours might successively fall on that part of
+the Paper which I saw by Reflexion from that part of the Glasses, where
+the Circles appear'd, so that all the Colours might be successively
+reflected from the Circles to my Eye, whilst I held it immovable, I
+found the Circles which the red Light made to be manifestly bigger than
+those which were made by the blue and violet. And it was very pleasant
+to see them gradually swell or contract accordingly as the Colour of the
+Light was changed. The Interval of the Glasses at any of the Rings when
+they were made by the utmost red Light, was to their Interval at the
+same Ring when made by the utmost violet, greater than as 3 to 2, and
+less than as 13 to 8. By the most of my Observations it was as 14 to 9.
+And this Proportion seem'd very nearly the same in all Obliquities of my
+Eye; unless when two Prisms were made use of instead of the
+Object-glasses. For then at a certain great obliquity of my Eye, the
+Rings made by the several Colours seem'd equal, and at a greater
+obliquity those made by the violet would be greater than the same Rings
+made by the red: the Refraction of the Prism in this case causing the
+most refrangible Rays to fall more obliquely on that plate of the Air
+than the least refrangible ones. Thus the Experiment succeeded in the
+colour'd Light, which was sufficiently strong and copious to make the
+Rings sensible. And thence it may be gather'd, that if the most
+refrangible and least refrangible Rays had been copious enough to make
+the Rings sensible without the mixture of other Rays, the Proportion
+which here was 14 to 9 would have been a little greater, suppose 14-1/4
+or 14-1/3 to 9.
+
+_Obs._ 14. Whilst the Prism was turn'd about its Axis with an uniform
+Motion, to make all the several Colours fall successively upon the
+Object-glasses, and thereby to make the Rings contract and dilate: The
+Contraction or Dilatation of each Ring thus made by the variation of its
+Colour was swiftest in the red, and slowest in the violet, and in the
+intermediate Colours it had intermediate degrees of Celerity. Comparing
+the quantity of Contraction and Dilatation made by all the degrees of
+each Colour, I found that it was greatest in the red; less in the
+yellow, still less in the blue, and least in the violet. And to make as
+just an Estimation as I could of the Proportions of their Contractions
+or Dilatations, I observ'd that the whole Contraction or Dilatation of
+the Diameter of any Ring made by all the degrees of red, was to that of
+the Diameter of the same Ring made by all the degrees of violet, as
+about four to three, or five to four, and that when the Light was of the
+middle Colour between yellow and green, the Diameter of the Ring was
+very nearly an arithmetical Mean between the greatest Diameter of the
+same Ring made by the outmost red, and the least Diameter thereof made
+by the outmost violet: Contrary to what happens in the Colours of the
+oblong Spectrum made by the Refraction of a Prism, where the red is most
+contracted, the violet most expanded, and in the midst of all the
+Colours is the Confine of green and blue. And hence I seem to collect
+that the thicknesses of the Air between the Glasses there, where the
+Ring is successively made by the limits of the five principal Colours
+(red, yellow, green, blue, violet) in order (that is, by the extreme
+red, by the limit of red and yellow in the middle of the orange, by the
+limit of yellow and green, by the limit of green and blue, by the limit
+of blue and violet in the middle of the indigo, and by the extreme
+violet) are to one another very nearly as the sixth lengths of a Chord
+which found the Notes in a sixth Major, _sol_, _la_, _mi_, _fa_, _sol_,
+_la_. But it agrees something better with the Observation to say, that
+the thicknesses of the Air between the Glasses there, where the Rings
+are successively made by the limits of the seven Colours, red, orange,
+yellow, green, blue, indigo, violet in order, are to one another as the
+Cube Roots of the Squares of the eight lengths of a Chord, which found
+the Notes in an eighth, _sol_, _la_, _fa_, _sol_, _la_, _mi_, _fa_,
+_sol_; that is, as the Cube Roots of the Squares of the Numbers, 1, 8/9,
+5/6, 3/4, 2/3, 3/5, 9/16, 1/2.
+
+_Obs._ 15. These Rings were not of various Colours like those made in
+the open Air, but appeared all over of that prismatick Colour only with
+which they were illuminated. And by projecting the prismatick Colours
+immediately upon the Glasses, I found that the Light which fell on the
+dark Spaces which were between the Colour'd Rings was transmitted
+through the Glasses without any variation of Colour. For on a white
+Paper placed behind, it would paint Rings of the same Colour with those
+which were reflected, and of the bigness of their immediate Spaces. And
+from thence the origin of these Rings is manifest; namely, that the Air
+between the Glasses, according to its various thickness, is disposed in
+some places to reflect, and in others to transmit the Light of any one
+Colour (as you may see represented in the fourth Figure) and in the same
+place to reflect that of one Colour where it transmits that of another.
+
+[Illustration: FIG. 4.]
+
+_Obs._ 16. The Squares of the Diameters of these Rings made by any
+prismatick Colour were in arithmetical Progression, as in the fifth
+Observation. And the Diameter of the sixth Circle, when made by the
+citrine yellow, and viewed almost perpendicularly was about 58/100 parts
+of an Inch, or a little less, agreeable to the sixth Observation.
+
+The precedent Observations were made with a rarer thin Medium,
+terminated by a denser, such as was Air or Water compress'd between two
+Glasses. In those that follow are set down the Appearances of a denser
+Medium thin'd within a rarer, such as are Plates of Muscovy Glass,
+Bubbles of Water, and some other thin Substances terminated on all sides
+with air.
+
+_Obs._ 17. If a Bubble be blown with Water first made tenacious by
+dissolving a little Soap in it, 'tis a common Observation, that after a
+while it will appear tinged with a great variety of Colours. To defend
+these Bubbles from being agitated by the external Air (whereby their
+Colours are irregularly moved one among another, so that no accurate
+Observation can be made of them,) as soon as I had blown any of them I
+cover'd it with a clear Glass, and by that means its Colours emerged in
+a very regular order, like so many concentrick Rings encompassing the
+top of the Bubble. And as the Bubble grew thinner by the continual
+subsiding of the Water, these Rings dilated slowly and overspread the
+whole Bubble, descending in order to the bottom of it, where they
+vanish'd successively. In the mean while, after all the Colours were
+emerged at the top, there grew in the center of the Rings a small round
+black Spot, like that in the first Observation, which continually
+dilated it self till it became sometimes more than 1/2 or 3/4 of an Inch
+in breadth before the Bubble broke. At first I thought there had been no
+Light reflected from the Water in that place, but observing it more
+curiously, I saw within it several smaller round Spots, which appeared
+much blacker and darker than the rest, whereby I knew that there was
+some Reflexion at the other places which were not so dark as those
+Spots. And by farther Tryal I found that I could see the Images of some
+things (as of a Candle or the Sun) very faintly reflected, not only from
+the great black Spot, but also from the little darker Spots which were
+within it.
+
+Besides the aforesaid colour'd Rings there would often appear small
+Spots of Colours, ascending and descending up and down the sides of the
+Bubble, by reason of some Inequalities in the subsiding of the Water.
+And sometimes small black Spots generated at the sides would ascend up
+to the larger black Spot at the top of the Bubble, and unite with it.
+
+_Obs._ 18. Because the Colours of these Bubbles were more extended and
+lively than those of the Air thinn'd between two Glasses, and so more
+easy to be distinguish'd, I shall here give you a farther description of
+their order, as they were observ'd in viewing them by Reflexion of the
+Skies when of a white Colour, whilst a black substance was placed
+behind the Bubble. And they were these, red, blue; red, blue; red, blue;
+red, green; red, yellow, green, blue, purple; red, yellow, green, blue,
+violet; red, yellow, white, blue, black.
+
+The three first Successions of red and blue were very dilute and dirty,
+especially the first, where the red seem'd in a manner to be white.
+Among these there was scarce any other Colour sensible besides red and
+blue, only the blues (and principally the second blue) inclined a little
+to green.
+
+The fourth red was also dilute and dirty, but not so much as the former
+three; after that succeeded little or no yellow, but a copious green,
+which at first inclined a little to yellow, and then became a pretty
+brisk and good willow green, and afterwards changed to a bluish Colour;
+but there succeeded neither blue nor violet.
+
+The fifth red at first inclined very much to purple, and afterwards
+became more bright and brisk, but yet not very pure. This was succeeded
+with a very bright and intense yellow, which was but little in quantity,
+and soon chang'd to green: But that green was copious and something more
+pure, deep and lively, than the former green. After that follow'd an
+excellent blue of a bright Sky-colour, and then a purple, which was less
+in quantity than the blue, and much inclined to red.
+
+The sixth red was at first of a very fair and lively scarlet, and soon
+after of a brighter Colour, being very pure and brisk, and the best of
+all the reds. Then after a lively orange follow'd an intense bright and
+copious yellow, which was also the best of all the yellows, and this
+changed first to a greenish yellow, and then to a greenish blue; but the
+green between the yellow and the blue, was very little and dilute,
+seeming rather a greenish white than a green. The blue which succeeded
+became very good, and of a very bright Sky-colour, but yet something
+inferior to the former blue; and the violet was intense and deep with
+little or no redness in it. And less in quantity than the blue.
+
+In the last red appeared a tincture of scarlet next to violet, which
+soon changed to a brighter Colour, inclining to an orange; and the
+yellow which follow'd was at first pretty good and lively, but
+afterwards it grew more dilute until by degrees it ended in perfect
+whiteness. And this whiteness, if the Water was very tenacious and
+well-temper'd, would slowly spread and dilate it self over the greater
+part of the Bubble; continually growing paler at the top, where at
+length it would crack in many places, and those cracks, as they dilated,
+would appear of a pretty good, but yet obscure and dark Sky-colour; the
+white between the blue Spots diminishing, until it resembled the Threds
+of an irregular Net-work, and soon after vanish'd, and left all the
+upper part of the Bubble of the said dark blue Colour. And this Colour,
+after the aforesaid manner, dilated it self downwards, until sometimes
+it hath overspread the whole Bubble. In the mean while at the top, which
+was of a darker blue than the bottom, and appear'd also full of many
+round blue Spots, something darker than the rest, there would emerge
+one or more very black Spots, and within those, other Spots of an
+intenser blackness, which I mention'd in the former Observation; and
+these continually dilated themselves until the Bubble broke.
+
+If the Water was not very tenacious, the black Spots would break forth
+in the white, without any sensible intervention of the blue. And
+sometimes they would break forth within the precedent yellow, or red, or
+perhaps within the blue of the second order, before the intermediate
+Colours had time to display themselves.
+
+By this description you may perceive how great an affinity these Colours
+have with those of Air described in the fourth Observation, although set
+down in a contrary order, by reason that they begin to appear when the
+Bubble is thickest, and are most conveniently reckon'd from the lowest
+and thickest part of the Bubble upwards.
+
+_Obs._ 19. Viewing in several oblique Positions of my Eye the Rings of
+Colours emerging on the top of the Bubble, I found that they were
+sensibly dilated by increasing the obliquity, but yet not so much by far
+as those made by thinn'd Air in the seventh Observation. For there they
+were dilated so much as, when view'd most obliquely, to arrive at a part
+of the Plate more than twelve times thicker than that where they
+appear'd when viewed perpendicularly; whereas in this case the thickness
+of the Water, at which they arrived when viewed most obliquely, was to
+that thickness which exhibited them by perpendicular Rays, something
+less than as 8 to 5. By the best of my Observations it was between 15
+and 15-1/2 to 10; an increase about 24 times less than in the other
+case.
+
+Sometimes the Bubble would become of an uniform thickness all over,
+except at the top of it near the black Spot, as I knew, because it would
+exhibit the same appearance of Colours in all Positions of the Eye. And
+then the Colours which were seen at its apparent circumference by the
+obliquest Rays, would be different from those that were seen in other
+places, by Rays less oblique to it. And divers Spectators might see the
+same part of it of differing Colours, by viewing it at very differing
+Obliquities. Now observing how much the Colours at the same places of
+the Bubble, or at divers places of equal thickness, were varied by the
+several Obliquities of the Rays; by the assistance of the 4th, 14th,
+16th and 18th Observations, as they are hereafter explain'd, I collect
+the thickness of the Water requisite to exhibit any one and the same
+Colour, at several Obliquities, to be very nearly in the Proportion
+expressed in this Table.
+
+-----------------+------------------+----------------
+  Incidence on   | Refraction into  | Thickness of
+   the Water.    |    the Water.    |   the Water.
+-----------------+------------------+----------------
+   Deg.    Min.  |    Deg.    Min.  |
+                 |                  |
+    00     00    |     00     00    |    10
+                 |                  |
+    15     00    |     11     11    |    10-1/4
+                 |                  |
+    30     00    |     22      1    |    10-4/5
+                 |                  |
+    45     00    |     32      2    |    11-4/5
+                 |                  |
+    60     00    |     40     30    |    13
+                 |                  |
+    75     00    |     46     25    |    14-1/2
+                 |                  |
+    90     00    |     48     35    |    15-1/5
+-----------------+------------------+----------------
+
+In the two first Columns are express'd the Obliquities of the Rays to
+the Superficies of the Water, that is, their Angles of Incidence and
+Refraction. Where I suppose, that the Sines which measure them are in
+round Numbers, as 3 to 4, though probably the Dissolution of Soap in the
+Water, may a little alter its refractive Virtue. In the third Column,
+the Thickness of the Bubble, at which any one Colour is exhibited in
+those several Obliquities, is express'd in Parts, of which ten
+constitute its Thickness when the Rays are perpendicular. And the Rule
+found by the seventh Observation agrees well with these Measures, if
+duly apply'd; namely, that the Thickness of a Plate of Water requisite
+to exhibit one and the same Colour at several Obliquities of the Eye, is
+proportional to the Secant of an Angle, whose Sine is the first of an
+hundred and six arithmetical mean Proportionals between the Sines of
+Incidence and Refraction counted from the lesser Sine, that is, from the
+Sine of Refraction when the Refraction is made out of Air into Water,
+otherwise from the Sine of Incidence.
+
+I have sometimes observ'd, that the Colours which arise on polish'd
+Steel by heating it, or on Bell-metal, and some other metalline
+Substances, when melted and pour'd on the Ground, where they may cool in
+the open Air, have, like the Colours of Water-bubbles, been a little
+changed by viewing them at divers Obliquities, and particularly that a
+deep blue, or violet, when view'd very obliquely, hath been changed to a
+deep red. But the Changes of these Colours are not so great and
+sensible as of those made by Water. For the Scoria, or vitrified Part of
+the Metal, which most Metals when heated or melted do continually
+protrude, and send out to their Surface, and which by covering the
+Metals in form of a thin glassy Skin, causes these Colours, is much
+denser than Water; and I find that the Change made by the Obliquation of
+the Eye is least in Colours of the densest thin Substances.
+
+_Obs._ 20. As in the ninth Observation, so here, the Bubble, by
+transmitted Light, appear'd of a contrary Colour to that, which it
+exhibited by Reflexion. Thus when the Bubble being look'd on by the
+Light of the Clouds reflected from it, seemed red at its apparent
+Circumference, if the Clouds at the same time, or immediately after,
+were view'd through it, the Colour at its Circumference would be blue.
+And, on the contrary, when by reflected Light it appeared blue, it would
+appear red by transmitted Light.
+
+_Obs._ 21. By wetting very thin Plates of _Muscovy_ Glass, whose
+thinness made the like Colours appear, the Colours became more faint and
+languid, especially by wetting the Plates on that side opposite to the
+Eye: But I could not perceive any variation of their Species. So then
+the thickness of a Plate requisite to produce any Colour, depends only
+on the density of the Plate, and not on that of the ambient Medium. And
+hence, by the 10th and 16th Observations, may be known the thickness
+which Bubbles of Water, or Plates of _Muscovy_ Glass, or other
+Substances, have at any Colour produced by them.
+
+_Obs._ 22. A thin transparent Body, which is denser than its ambient
+Medium, exhibits more brisk and vivid Colours than that which is so much
+rarer; as I have particularly observed in the Air and Glass. For blowing
+Glass very thin at a Lamp Furnace, those Plates encompassed with Air did
+exhibit Colours much more vivid than those of Air made thin between two
+Glasses.
+
+_Obs._ 23. Comparing the quantity of Light reflected from the several
+Rings, I found that it was most copious from the first or inmost, and in
+the exterior Rings became gradually less and less. Also the whiteness of
+the first Ring was stronger than that reflected from those parts of the
+thin Medium or Plate which were without the Rings; as I could manifestly
+perceive by viewing at a distance the Rings made by the two
+Object-glasses; or by comparing two Bubbles of Water blown at distant
+Times, in the first of which the Whiteness appear'd, which succeeded all
+the Colours, and in the other, the Whiteness which preceded them all.
+
+_Obs._ 24. When the two Object-glasses were lay'd upon one another, so
+as to make the Rings of the Colours appear, though with my naked Eye I
+could not discern above eight or nine of those Rings, yet by viewing
+them through a Prism I have seen a far greater Multitude, insomuch that
+I could number more than forty, besides many others, that were so very
+small and close together, that I could not keep my Eye steady on them
+severally so as to number them, but by their Extent I have sometimes
+estimated them to be more than an hundred. And I believe the Experiment
+may be improved to the Discovery of far greater Numbers. For they seem
+to be really unlimited, though visible only so far as they can be
+separated by the Refraction of the Prism, as I shall hereafter explain.
+
+[Illustration: FIG. 5.]
+
+But it was but one side of these Rings, namely, that towards which the
+Refraction was made, which by that Refraction was render'd distinct, and
+the other side became more confused than when view'd by the naked Eye,
+insomuch that there I could not discern above one or two, and sometimes
+none of those Rings, of which I could discern eight or nine with my
+naked Eye. And their Segments or Arcs, which on the other side appear'd
+so numerous, for the most part exceeded not the third Part of a Circle.
+If the Refraction was very great, or the Prism very distant from the
+Object-glasses, the middle Part of those Arcs became also confused, so
+as to disappear and constitute an even Whiteness, whilst on either side
+their Ends, as also the whole Arcs farthest from the Center, became
+distincter than before, appearing in the Form as you see them design'd
+in the fifth Figure.
+
+The Arcs, where they seem'd distinctest, were only white and black
+successively, without any other Colours intermix'd. But in other Places
+there appeared Colours, whose Order was inverted by the refraction in
+such manner, that if I first held the Prism very near the
+Object-glasses, and then gradually removed it farther off towards my
+Eye, the Colours of the 2d, 3d, 4th, and following Rings, shrunk towards
+the white that emerged between them, until they wholly vanish'd into it
+at the middle of the Arcs, and afterwards emerged again in a contrary
+Order. But at the Ends of the Arcs they retain'd their Order unchanged.
+
+I have sometimes so lay'd one Object-glass upon the other, that to the
+naked Eye they have all over seem'd uniformly white, without the least
+Appearance of any of the colour'd Rings; and yet by viewing them through
+a Prism, great Multitudes of those Rings have discover'd themselves. And
+in like manner Plates of _Muscovy_ Glass, and Bubbles of Glass blown at
+a Lamp-Furnace, which were not so thin as to exhibit any Colours to the
+naked Eye, have through the Prism exhibited a great Variety of them
+ranged irregularly up and down in the Form of Waves. And so Bubbles of
+Water, before they began to exhibit their Colours to the naked Eye of a
+Bystander, have appeared through a Prism, girded about with many
+parallel and horizontal Rings; to produce which Effect, it was necessary
+to hold the Prism parallel, or very nearly parallel to the Horizon, and
+to dispose it so that the Rays might be refracted upwards.
+
+
+
+
+THE
+
+SECOND BOOK
+
+OF
+
+OPTICKS
+
+
+_PART II._
+
+_Remarks upon the foregoing Observations._
+
+
+Having given my Observations of these Colours, before I make use of them
+to unfold the Causes of the Colours of natural Bodies, it is convenient
+that by the simplest of them, such as are the 2d, 3d, 4th, 9th, 12th,
+18th, 20th, and 24th, I first explain the more compounded. And first to
+shew how the Colours in the fourth and eighteenth Observations are
+produced, let there be taken in any Right Line from the Point Y, [in
+_Fig._ 6.] the Lengths YA, YB, YC, YD, YE, YF, YG, YH, in proportion to
+one another, as the Cube-Roots of the Squares of the Numbers, 1/2, 9/16,
+3/5, 2/3, 3/4, 5/6, 8/9, 1, whereby the Lengths of a Musical Chord to
+sound all the Notes in an eighth are represented; that is, in the
+Proportion of the Numbers 6300, 6814, 7114, 7631, 8255, 8855, 9243,
+10000. And at the Points A, B, C, D, E, F, G, H, let Perpendiculars
+A[Greek: a], B[Greek: b], &c. be erected, by whose Intervals the Extent
+of the several Colours set underneath against them, is to be
+represented. Then divide the Line _A[Greek: a]_ in such Proportion as
+the Numbers 1, 2, 3, 5, 6, 7, 9, 10, 11, &c. set at the Points of
+Division denote. And through those Divisions from Y draw Lines 1I, 2K,
+3L, 5M, 6N, 7O, &c.
+
+Now, if A2 be supposed to represent the Thickness of any thin
+transparent Body, at which the outmost Violet is most copiously
+reflected in the first Ring, or Series of Colours, then by the 13th
+Observation, HK will represent its Thickness, at which the utmost Red is
+most copiously reflected in the same Series. Also by the 5th and 16th
+Observations, A6 and HN will denote the Thicknesses at which those
+extreme Colours are most copiously reflected in the second Series, and
+A10 and HQ the Thicknesses at which they are most copiously reflected in
+the third Series, and so on. And the Thickness at which any of the
+intermediate Colours are reflected most copiously, will, according to
+the 14th Observation, be defined by the distance of the Line AH from the
+intermediate parts of the Lines 2K, 6N, 10Q, &c. against which the Names
+of those Colours are written below.
+
+[Illustration: FIG. 6.]
+
+But farther, to define the Latitude of these Colours in each Ring or
+Series, let A1 design the least thickness, and A3 the greatest
+thickness, at which the extreme violet in the first Series is reflected,
+and let HI, and HL, design the like limits for the extreme red, and let
+the intermediate Colours be limited by the intermediate parts of the
+Lines 1I, and 3L, against which the Names of those Colours are written,
+and so on: But yet with this caution, that the Reflexions be supposed
+strongest at the intermediate Spaces, 2K, 6N, 10Q, &c. and from thence
+to decrease gradually towards these limits, 1I, 3L, 5M, 7O, &c. on
+either side; where you must not conceive them to be precisely limited,
+but to decay indefinitely. And whereas I have assign'd the same Latitude
+to every Series, I did it, because although the Colours in the first
+Series seem to be a little broader than the rest, by reason of a
+stronger Reflexion there, yet that inequality is so insensible as
+scarcely to be determin'd by Observation.
+
+Now according to this Description, conceiving that the Rays originally
+of several Colours are by turns reflected at the Spaces 1I, L3, 5M, O7,
+9PR11, &c. and transmitted at the Spaces AHI1, 3LM5, 7OP9, &c. it is
+easy to know what Colour must in the open Air be exhibited at any
+thickness of a transparent thin Body. For if a Ruler be applied parallel
+to AH, at that distance from it by which the thickness of the Body is
+represented, the alternate Spaces 1IL3, 5MO7, &c. which it crosseth will
+denote the reflected original Colours, of which the Colour exhibited in
+the open Air is compounded. Thus if the constitution of the green in the
+third Series of Colours be desired, apply the Ruler as you see at
+[Greek: prsph], and by its passing through some of the blue at [Greek:
+p] and yellow at [Greek: s], as well as through the green at [Greek: r],
+you may conclude that the green exhibited at that thickness of the Body
+is principally constituted of original green, but not without a mixture
+of some blue and yellow.
+
+By this means you may know how the Colours from the center of the Rings
+outward ought to succeed in order as they were described in the 4th and
+18th Observations. For if you move the Ruler gradually from AH through
+all distances, having pass'd over the first Space which denotes little
+or no Reflexion to be made by thinnest Substances, it will first arrive
+at 1 the violet, and then very quickly at the blue and green, which
+together with that violet compound blue, and then at the yellow and red,
+by whose farther addition that blue is converted into whiteness, which
+whiteness continues during the transit of the edge of the Ruler from I
+to 3, and after that by the successive deficience of its component
+Colours, turns first to compound yellow, and then to red, and last of
+all the red ceaseth at L. Then begin the Colours of the second Series,
+which succeed in order during the transit of the edge of the Ruler from
+5 to O, and are more lively than before, because more expanded and
+severed. And for the same reason instead of the former white there
+intercedes between the blue and yellow a mixture of orange, yellow,
+green, blue and indigo, all which together ought to exhibit a dilute and
+imperfect green. So the Colours of the third Series all succeed in
+order; first, the violet, which a little interferes with the red of the
+second order, and is thereby inclined to a reddish purple; then the blue
+and green, which are less mix'd with other Colours, and consequently
+more lively than before, especially the green: Then follows the yellow,
+some of which towards the green is distinct and good, but that part of
+it towards the succeeding red, as also that red is mix'd with the violet
+and blue of the fourth Series, whereby various degrees of red very much
+inclining to purple are compounded. This violet and blue, which should
+succeed this red, being mixed with, and hidden in it, there succeeds a
+green. And this at first is much inclined to blue, but soon becomes a
+good green, the only unmix'd and lively Colour in this fourth Series.
+For as it verges towards the yellow, it begins to interfere with the
+Colours of the fifth Series, by whose mixture the succeeding yellow and
+red are very much diluted and made dirty, especially the yellow, which
+being the weaker Colour is scarce able to shew it self. After this the
+several Series interfere more and more, and their Colours become more
+and more intermix'd, till after three or four more revolutions (in which
+the red and blue predominate by turns) all sorts of Colours are in all
+places pretty equally blended, and compound an even whiteness.
+
+And since by the 15th Observation the Rays endued with one Colour are
+transmitted, where those of another Colour are reflected, the reason of
+the Colours made by the transmitted Light in the 9th and 20th
+Observations is from hence evident.
+
+If not only the Order and Species of these Colours, but also the precise
+thickness of the Plate, or thin Body at which they are exhibited, be
+desired in parts of an Inch, that may be also obtained by assistance of
+the 6th or 16th Observations. For according to those Observations the
+thickness of the thinned Air, which between two Glasses exhibited the
+most luminous parts of the first six Rings were 1/178000, 3/178000,
+5/178000, 7/178000, 9/178000, 11/178000 parts of an Inch. Suppose the
+Light reflected most copiously at these thicknesses be the bright
+citrine yellow, or confine of yellow and orange, and these thicknesses
+will be F[Greek: l], F[Greek: m], F[Greek: u], F[Greek: x], F[Greek: o],
+F[Greek: t]. And this being known, it is easy to determine what
+thickness of Air is represented by G[Greek: ph], or by any other
+distance of the Ruler from AH.
+
+But farther, since by the 10th Observation the thickness of Air was to
+the thickness of Water, which between the same Glasses exhibited the
+same Colour, as 4 to 3, and by the 21st Observation the Colours of thin
+Bodies are not varied by varying the ambient Medium; the thickness of a
+Bubble of Water, exhibiting any Colour, will be 3/4 of the thickness of
+Air producing the same Colour. And so according to the same 10th and
+21st Observations, the thickness of a Plate of Glass, whose Refraction
+of the mean refrangible Ray, is measured by the proportion of the Sines
+31 to 20, may be 20/31 of the thickness of Air producing the same
+Colours; and the like of other Mediums. I do not affirm, that this
+proportion of 20 to 31, holds in all the Rays; for the Sines of other
+sorts of Rays have other Proportions. But the differences of those
+Proportions are so little that I do not here consider them. On these
+Grounds I have composed the following Table, wherein the thickness of
+Air, Water, and Glass, at which each Colour is most intense and
+specifick, is expressed in parts of an Inch divided into ten hundred
+thousand equal parts.
+
+Now if this Table be compared with the 6th Scheme, you will there see
+the constitution of each Colour, as to its Ingredients, or the original
+Colours of which it is compounded, and thence be enabled to judge of its
+Intenseness or Imperfection; which may suffice in explication of the 4th
+and 18th Observations, unless it be farther desired to delineate the
+manner how the Colours appear, when the two Object-glasses are laid upon
+one another. To do which, let there be described a large Arc of a
+Circle, and a streight Line which may touch that Arc, and parallel to
+that Tangent several occult Lines, at such distances from it, as the
+Numbers set against the several Colours in the Table denote. For the
+Arc, and its Tangent, will represent the Superficies of the Glasses
+terminating the interjacent Air; and the places where the occult Lines
+cut the Arc will show at what distances from the center, or Point of
+contact, each Colour is reflected.
+
+_The thickness of colour'd Plates and Particles of_
+                                          _____________|_______________
+                                         /                             \
+                                            Air.      Water.     Glass.
+                                        |---------+----------+----------+
+                       {Very black      |    1/2  |    3/8   |  10/31   |
+                       {Black           |  1      |    3/4   |  20/31   |
+                       {Beginning of    |         |          |          |
+                       {  Black         |  2      |  1-1/2   |  1-2/7   |
+Their Colours of the   {Blue            |  2-2/5  |  1-4/5   |  1-11/22 |
+first Order,           {White           |  5-1/4  |  3-7/8   |  3-2/5   |
+                       {Yellow          |  7-1/9  |  5-1/3   |  4-3/5   |
+                       {Orange          |  8      |  6       |  5-1/6   |
+                       {Red             |  9      |  6-3/4   |  5-4/5   |
+                                        |---------+----------+----------|
+                       {Violet          | 11-1/6  |  8-3/8   |  7-1/5   |
+                       {Indigo          | 12-5/6  |  9-5/8   |  8-2/11  |
+                       {Blue            | 14      |  10-1/2  |  9       |
+                       {Green           | 15-1/8  | 11-2/3   |  9-5/7   |
+Of the second order,   {Yellow          | 16-2/7  | 12-1/5   | 10-2/5   |
+                       {Orange          | 17-2/9  | 13       | 11-1/9   |
+                       {Bright red      | 18-1/3  | 13-3/4   | 11-5/6   |
+                       {Scarlet         | 19-2/3  | 14-3/4   | 12-2/3   |
+                                        |---------+----------+----------|
+                       {Purple          | 21      | 15-3/4   | 13-11/20 |
+                       {Indigo          | 22-1/10 | 16-4/7   | 14-1/4   |
+                       {Blue            | 23-2/5  | 17-11/20 | 15-1/10  |
+Of the third Order,    {Green           | 25-1/5  | 18-9/10  | 16-1/4   |
+                       {Yellow          | 27-1/7  | 20-1/3   | 17-1/2   |
+                       {Red             | 29      | 21-3/4   | 18-5/7   |
+                       {Bluish red      | 32      | 24       | 20-2/3   |
+                                        |---------+----------+----------|
+                       {Bluish green    | 34      | 25-1/2   | 22       |
+                       {Green           | 35-2/7  | 26-1/2   | 22-3/4   |
+Of the fourth Order,   {Yellowish green | 36      | 27       | 23-2/9   |
+                       {Red             | 40-1/3  | 30-1/4   | 26       |
+                                        |---------+----------+----------|
+                       {Greenish blue   | 46      | 34-1/2   | 29-2/3   |
+Of the fifth Order,    {Red             | 52-1/2  | 39-3/8   | 34       |
+                                        |---------+----------+----------|
+                       {Greenish blue   | 58-3/4  | 44       | 38       |
+Of the sixth Order,    {Red             | 65      | 48-3/4   | 42       |
+                                        |---------+----------+----------|
+Of the seventh Order,  {Greenish blue   | 71      | 53-1/4   | 45-4/5   |
+                       {Ruddy White     | 77      | 57-3/4   | 49-2/3   |
+                                        |---------+----------+----------|
+
+There are also other Uses of this Table: For by its assistance the
+thickness of the Bubble in the 19th Observation was determin'd by the
+Colours which it exhibited. And so the bigness of the parts of natural
+Bodies may be conjectured by their Colours, as shall be hereafter shewn.
+Also, if two or more very thin Plates be laid one upon another, so as to
+compose one Plate equalling them all in thickness, the resulting Colour
+may be hereby determin'd. For instance, Mr. _Hook_ observed, as is
+mentioned in his _Micrographia_, that a faint yellow Plate of _Muscovy_
+Glass laid upon a blue one, constituted a very deep purple. The yellow
+of the first Order is a faint one, and the thickness of the Plate
+exhibiting it, according to the Table is 4-3/5, to which add 9, the
+thickness exhibiting blue of the second Order, and the Sum will be
+13-3/5, which is the thickness exhibiting the purple of the third Order.
+
+To explain, in the next place, the circumstances of the 2d and 3d
+Observations; that is, how the Rings of the Colours may (by turning the
+Prisms about their common Axis the contrary way to that expressed in
+those Observations) be converted into white and black Rings, and
+afterwards into Rings of Colours again, the Colours of each Ring lying
+now in an inverted order; it must be remember'd, that those Rings of
+Colours are dilated by the obliquation of the Rays to the Air which
+intercedes the Glasses, and that according to the Table in the 7th
+Observation, their Dilatation or Increase of their Diameter is most
+manifest and speedy when they are obliquest. Now the Rays of yellow
+being more refracted by the first Superficies of the said Air than those
+of red, are thereby made more oblique to the second Superficies, at
+which they are reflected to produce the colour'd Rings, and consequently
+the yellow Circle in each Ring will be more dilated than the red; and
+the Excess of its Dilatation will be so much the greater, by how much
+the greater is the obliquity of the Rays, until at last it become of
+equal extent with the red of the same Ring. And for the same reason the
+green, blue and violet, will be also so much dilated by the still
+greater obliquity of their Rays, as to become all very nearly of equal
+extent with the red, that is, equally distant from the center of the
+Rings. And then all the Colours of the same Ring must be co-incident,
+and by their mixture exhibit a white Ring. And these white Rings must
+have black and dark Rings between them, because they do not spread and
+interfere with one another, as before. And for that reason also they
+must become distincter, and visible to far greater numbers. But yet the
+violet being obliquest will be something more dilated, in proportion to
+its extent, than the other Colours, and so very apt to appear at the
+exterior Verges of the white.
+
+Afterwards, by a greater obliquity of the Rays, the violet and blue
+become more sensibly dilated than the red and yellow, and so being
+farther removed from the center of the Rings, the Colours must emerge
+out of the white in an order contrary to that which they had before; the
+violet and blue at the exterior Limbs of each Ring, and the red and
+yellow at the interior. And the violet, by reason of the greatest
+obliquity of its Rays, being in proportion most of all expanded, will
+soonest appear at the exterior Limb of each white Ring, and become more
+conspicuous than the rest. And the several Series of Colours belonging
+to the several Rings, will, by their unfolding and spreading, begin
+again to interfere, and thereby render the Rings less distinct, and not
+visible to so great numbers.
+
+If instead of the Prisms the Object-glasses be made use of, the Rings
+which they exhibit become not white and distinct by the obliquity of the
+Eye, by reason that the Rays in their passage through that Air which
+intercedes the Glasses are very nearly parallel to those Lines in which
+they were first incident on the Glasses, and consequently the Rays
+endued with several Colours are not inclined one more than another to
+that Air, as it happens in the Prisms.
+
+There is yet another circumstance of these Experiments to be consider'd,
+and that is why the black and white Rings which when view'd at a
+distance appear distinct, should not only become confused by viewing
+them near at hand, but also yield a violet Colour at both the edges of
+every white Ring. And the reason is, that the Rays which enter the Eye
+at several parts of the Pupil, have several Obliquities to the Glasses,
+and those which are most oblique, if consider'd apart, would represent
+the Rings bigger than those which are the least oblique. Whence the
+breadth of the Perimeter of every white Ring is expanded outwards by the
+obliquest Rays, and inwards by the least oblique. And this Expansion is
+so much the greater by how much the greater is the difference of the
+Obliquity; that is, by how much the Pupil is wider, or the Eye nearer to
+the Glasses. And the breadth of the violet must be most expanded,
+because the Rays apt to excite a Sensation of that Colour are most
+oblique to a second or farther Superficies of the thinn'd Air at which
+they are reflected, and have also the greatest variation of Obliquity,
+which makes that Colour soonest emerge out of the edges of the white.
+And as the breadth of every Ring is thus augmented, the dark Intervals
+must be diminish'd, until the neighbouring Rings become continuous, and
+are blended, the exterior first, and then those nearer the center; so
+that they can no longer be distinguish'd apart, but seem to constitute
+an even and uniform whiteness.
+
+Among all the Observations there is none accompanied with so odd
+circumstances as the twenty-fourth. Of those the principal are, that in
+thin Plates, which to the naked Eye seem of an even and uniform
+transparent whiteness, without any terminations of Shadows, the
+Refraction of a Prism should make Rings of Colours appear, whereas it
+usually makes Objects appear colour'd only there where they are
+terminated with Shadows, or have parts unequally luminous; and that it
+should make those Rings exceedingly distinct and white, although it
+usually renders Objects confused and coloured. The Cause of these things
+you will understand by considering, that all the Rings of Colours are
+really in the Plate, when view'd with the naked Eye, although by reason
+of the great breadth of their Circumferences they so much interfere and
+are blended together, that they seem to constitute an uniform whiteness.
+But when the Rays pass through the Prism to the Eye, the Orbits of the
+several Colours in every Ring are refracted, some more than others,
+according to their degrees of Refrangibility: By which means the Colours
+on one side of the Ring (that is in the circumference on one side of its
+center), become more unfolded and dilated, and those on the other side
+more complicated and contracted. And where by a due Refraction they are
+so much contracted, that the several Rings become narrower than to
+interfere with one another, they must appear distinct, and also white,
+if the constituent Colours be so much contracted as to be wholly
+co-incident. But on the other side, where the Orbit of every Ring is
+made broader by the farther unfolding of its Colours, it must interfere
+more with other Rings than before, and so become less distinct.
+
+[Illustration: FIG. 7.]
+
+To explain this a little farther, suppose the concentrick Circles AV,
+and BX, [in _Fig._ 7.] represent the red and violet of any Order, which,
+together with the intermediate Colours, constitute any one of these
+Rings. Now these being view'd through a Prism, the violet Circle BX,
+will, by a greater Refraction, be farther translated from its place than
+the red AV, and so approach nearer to it on that side of the Circles,
+towards which the Refractions are made. For instance, if the red be
+translated to _av_, the violet may be translated to _bx_, so as to
+approach nearer to it at _x_ than before; and if the red be farther
+translated to av, the violet may be so much farther translated to bx as
+to convene with it at x; and if the red be yet farther translated to
+[Greek: aY], the violet may be still so much farther translated to
+[Greek: bx] as to pass beyond it at [Greek: x], and convene with it at
+_e_ and _f_. And this being understood not only of the red and violet,
+but of all the other intermediate Colours, and also of every revolution
+of those Colours, you will easily perceive how those of the same
+revolution or order, by their nearness at _xv_ and [Greek: Yx], and
+their coincidence at xv, _e_ and _f_, ought to constitute pretty
+distinct Arcs of Circles, especially at xv, or at _e_ and _f_; and that
+they will appear severally at _x_[Greek: u] and at xv exhibit whiteness
+by their coincidence, and again appear severally at [Greek: Yx], but yet
+in a contrary order to that which they had before, and still retain
+beyond _e_ and _f_. But on the other side, at _ab_, ab, or [Greek: ab],
+these Colours must become much more confused by being dilated and spread
+so as to interfere with those of other Orders. And the same confusion
+will happen at [Greek: Ux] between _e_ and _f_, if the Refraction be
+very great, or the Prism very distant from the Object-glasses: In which
+case no parts of the Rings will be seen, save only two little Arcs at
+_e_ and _f_, whose distance from one another will be augmented by
+removing the Prism still farther from the Object-glasses: And these
+little Arcs must be distinctest and whitest at their middle, and at
+their ends, where they begin to grow confused, they must be colour'd.
+And the Colours at one end of every Arc must be in a contrary order to
+those at the other end, by reason that they cross in the intermediate
+white; namely, their ends, which verge towards [Greek: Ux], will be red
+and yellow on that side next the center, and blue and violet on the
+other side. But their other ends which verge from [Greek: Ux], will on
+the contrary be blue and violet on that side towards the center, and on
+the other side red and yellow.
+
+Now as all these things follow from the properties of Light by a
+mathematical way of reasoning, so the truth of them may be manifested by
+Experiments. For in a dark Room, by viewing these Rings through a Prism,
+by reflexion of the several prismatick Colours, which an assistant
+causes to move to and fro upon a Wall or Paper from whence they are
+reflected, whilst the Spectator's Eye, the Prism, and the
+Object-glasses, (as in the 13th Observation,) are placed steady; the
+Position of the Circles made successively by the several Colours, will
+be found such, in respect of one another, as I have described in the
+Figures _abxv_, or abxv, or _[Greek: abxU]_. And by the same method the
+truth of the Explications of other Observations may be examined.
+
+By what hath been said, the like Phænomena of Water and thin Plates of
+Glass may be understood. But in small fragments of those Plates there is
+this farther observable, that where they lie flat upon a Table, and are
+turned about their centers whilst they are view'd through a Prism, they
+will in some postures exhibit Waves of various Colours; and some of them
+exhibit these Waves in one or two Positions only, but the most of them
+do in all Positions exhibit them, and make them for the most part appear
+almost all over the Plates. The reason is, that the Superficies of such
+Plates are not even, but have many Cavities and Swellings, which, how
+shallow soever, do a little vary the thickness of the Plate. For at the
+several sides of those Cavities, for the Reasons newly described, there
+ought to be produced Waves in several postures of the Prism. Now though
+it be but some very small and narrower parts of the Glass, by which
+these Waves for the most part are caused, yet they may seem to extend
+themselves over the whole Glass, because from the narrowest of those
+parts there are Colours of several Orders, that is, of several Rings,
+confusedly reflected, which by Refraction of the Prism are unfolded,
+separated, and, according to their degrees of Refraction, dispersed to
+several places, so as to constitute so many several Waves, as there were
+divers orders of Colours promiscuously reflected from that part of the
+Glass.
+
+These are the principal Phænomena of thin Plates or Bubbles, whose
+Explications depend on the properties of Light, which I have heretofore
+deliver'd. And these you see do necessarily follow from them, and agree
+with them, even to their very least circumstances; and not only so, but
+do very much tend to their proof. Thus, by the 24th Observation it
+appears, that the Rays of several Colours, made as well by thin Plates
+or Bubbles, as by Refractions of a Prism, have several degrees of
+Refrangibility; whereby those of each order, which at the reflexion from
+the Plate or Bubble are intermix'd with those of other orders, are
+separated from them by Refraction, and associated together so as to
+become visible by themselves like Arcs of Circles. For if the Rays were
+all alike refrangible, 'tis impossible that the whiteness, which to the
+naked Sense appears uniform, should by Refraction have its parts
+transposed and ranged into those black and white Arcs.
+
+It appears also that the unequal Refractions of difform Rays proceed not
+from any contingent irregularities; such as are Veins, an uneven Polish,
+or fortuitous Position of the Pores of Glass; unequal and casual Motions
+in the Air or Æther, the spreading, breaking, or dividing the same Ray
+into many diverging parts; or the like. For, admitting any such
+irregularities, it would be impossible for Refractions to render those
+Rings so very distinct, and well defined, as they do in the 24th
+Observation. It is necessary therefore that every Ray have its proper
+and constant degree of Refrangibility connate with it, according to
+which its refraction is ever justly and regularly perform'd; and that
+several Rays have several of those degrees.
+
+And what is said of their Refrangibility may be also understood of their
+Reflexibility, that is, of their Dispositions to be reflected, some at a
+greater, and others at a less thickness of thin Plates or Bubbles;
+namely, that those Dispositions are also connate with the Rays, and
+immutable; as may appear by the 13th, 14th, and 15th Observations,
+compared with the fourth and eighteenth.
+
+By the Precedent Observations it appears also, that whiteness is a
+dissimilar mixture of all Colours, and that Light is a mixture of Rays
+endued with all those Colours. For, considering the multitude of the
+Rings of Colours in the 3d, 12th, and 24th Observations, it is manifest,
+that although in the 4th and 18th Observations there appear no more than
+eight or nine of those Rings, yet there are really a far greater number,
+which so much interfere and mingle with one another, as after those
+eight or nine revolutions to dilute one another wholly, and constitute
+an even and sensibly uniform whiteness. And consequently that whiteness
+must be allow'd a mixture of all Colours, and the Light which conveys it
+to the Eye must be a mixture of Rays endued with all those Colours.
+
+But farther; by the 24th Observation it appears, that there is a
+constant relation between Colours and Refrangibility; the most
+refrangible Rays being violet, the least refrangible red, and those of
+intermediate Colours having proportionably intermediate degrees of
+Refrangibility. And by the 13th, 14th, and 15th Observations, compared
+with the 4th or 18th there appears to be the same constant relation
+between Colour and Reflexibility; the violet being in like circumstances
+reflected at least thicknesses of any thin Plate or Bubble, the red at
+greatest thicknesses, and the intermediate Colours at intermediate
+thicknesses. Whence it follows, that the colorifick Dispositions of
+Rays are also connate with them, and immutable; and by consequence, that
+all the Productions and Appearances of Colours in the World are derived,
+not from any physical Change caused in Light by Refraction or Reflexion,
+but only from the various Mixtures or Separations of Rays, by virtue of
+their different Refrangibility or Reflexibility. And in this respect the
+Science of Colours becomes a Speculation as truly mathematical as any
+other part of Opticks. I mean, so far as they depend on the Nature of
+Light, and are not produced or alter'd by the Power of Imagination, or
+by striking or pressing the Eye.
+
+
+
+
+THE
+
+SECOND BOOK
+
+OF
+
+OPTICKS
+
+
+_PART III._
+
+_Of the permanent Colours of natural Bodies, and the Analogy between
+them and the Colours of thin transparent Plates._
+
+I am now come to another part of this Design, which is to consider how
+the Phænomena of thin transparent Plates stand related to those of all
+other natural Bodies. Of these Bodies I have already told you that they
+appear of divers Colours, accordingly as they are disposed to reflect
+most copiously the Rays originally endued with those Colours. But their
+Constitutions, whereby they reflect some Rays more copiously than
+others, remain to be discover'd; and these I shall endeavour to manifest
+in the following Propositions.
+
+
+PROP. I.
+
+_Those Superficies of transparent Bodies reflect the greatest quantity
+of Light, which have the greatest refracting Power; that is, which
+intercede Mediums that differ most in their refractive Densities. And in
+the Confines of equally refracting Mediums there is no Reflexion._
+
+The Analogy between Reflexion and Refraction will appear by considering,
+that when Light passeth obliquely out of one Medium into another which
+refracts from the perpendicular, the greater is the difference of their
+refractive Density, the less Obliquity of Incidence is requisite to
+cause a total Reflexion. For as the Sines are which measure the
+Refraction, so is the Sine of Incidence at which the total Reflexion
+begins, to the Radius of the Circle; and consequently that Angle of
+Incidence is least where there is the greatest difference of the Sines.
+Thus in the passing of Light out of Water into Air, where the Refraction
+is measured by the Ratio of the Sines 3 to 4, the total Reflexion begins
+when the Angle of Incidence is about 48 Degrees 35 Minutes. In passing
+out of Glass into Air, where the Refraction is measured by the Ratio of
+the Sines 20 to 31, the total Reflexion begins when the Angle of
+Incidence is 40 Degrees 10 Minutes; and so in passing out of Crystal, or
+more strongly refracting Mediums into Air, there is still a less
+obliquity requisite to cause a total reflexion. Superficies therefore
+which refract most do soonest reflect all the Light which is incident on
+them, and so must be allowed most strongly reflexive.
+
+But the truth of this Proposition will farther appear by observing, that
+in the Superficies interceding two transparent Mediums, (such as are
+Air, Water, Oil, common Glass, Crystal, metalline Glasses, Island
+Glasses, white transparent Arsenick, Diamonds, &c.) the Reflexion is
+stronger or weaker accordingly, as the Superficies hath a greater or
+less refracting Power. For in the Confine of Air and Sal-gem 'tis
+stronger than in the Confine of Air and Water, and still stronger in the
+Confine of Air and common Glass or Crystal, and stronger in the Confine
+of Air and a Diamond. If any of these, and such like transparent Solids,
+be immerged in Water, its Reflexion becomes, much weaker than before;
+and still weaker if they be immerged in the more strongly refracting
+Liquors of well rectified Oil of Vitriol or Spirit of Turpentine. If
+Water be distinguish'd into two parts by any imaginary Surface, the
+Reflexion in the Confine of those two parts is none at all. In the
+Confine of Water and Ice 'tis very little; in that of Water and Oil 'tis
+something greater; in that of Water and Sal-gem still greater; and in
+that of Water and Glass, or Crystal or other denser Substances still
+greater, accordingly as those Mediums differ more or less in their
+refracting Powers. Hence in the Confine of common Glass and Crystal,
+there ought to be a weak Reflexion, and a stronger Reflexion in the
+Confine of common and metalline Glass; though I have not yet tried
+this. But in the Confine of two Glasses of equal density, there is not
+any sensible Reflexion; as was shewn in the first Observation. And the
+same may be understood of the Superficies interceding two Crystals, or
+two Liquors, or any other Substances in which no Refraction is caused.
+So then the reason why uniform pellucid Mediums (such as Water, Glass,
+or Crystal,) have no sensible Reflexion but in their external
+Superficies, where they are adjacent to other Mediums of a different
+density, is because all their contiguous parts have one and the same
+degree of density.
+
+
+PROP. II.
+
+_The least parts of almost all natural Bodies are in some measure
+transparent: And the Opacity of those Bodies ariseth from the multitude
+of Reflexions caused in their internal Parts._
+
+That this is so has been observed by others, and will easily be granted
+by them that have been conversant with Microscopes. And it may be also
+tried by applying any substance to a hole through which some Light is
+immitted into a dark Room. For how opake soever that Substance may seem
+in the open Air, it will by that means appear very manifestly
+transparent, if it be of a sufficient thinness. Only white metalline
+Bodies must be excepted, which by reason of their excessive density seem
+to reflect almost all the Light incident on their first Superficies;
+unless by solution in Menstruums they be reduced into very small
+Particles, and then they become transparent.
+
+
+PROP. III.
+
+_Between the parts of opake and colour'd Bodies are many Spaces, either
+empty, or replenish'd with Mediums of other Densities; as Water between
+the tinging Corpuscles wherewith any Liquor is impregnated, Air between
+the aqueous Globules that constitute Clouds or Mists; and for the most
+part Spaces void of both Air and Water, but yet perhaps not wholly void
+of all Substance, between the parts of hard Bodies._
+
+The truth of this is evinced by the two precedent Propositions: For by
+the second Proposition there are many Reflexions made by the internal
+parts of Bodies, which, by the first Proposition, would not happen if
+the parts of those Bodies were continued without any such Interstices
+between them; because Reflexions are caused only in Superficies, which
+intercede Mediums of a differing density, by _Prop._ 1.
+
+But farther, that this discontinuity of parts is the principal Cause of
+the opacity of Bodies, will appear by considering, that opake Substances
+become transparent by filling their Pores with any Substance of equal or
+almost equal density with their parts. Thus Paper dipped in Water or
+Oil, the _Oculus Mundi_ Stone steep'd in Water, Linnen Cloth oiled or
+varnish'd, and many other Substances soaked in such Liquors as will
+intimately pervade their little Pores, become by that means more
+transparent than otherwise; so, on the contrary, the most transparent
+Substances, may, by evacuating their Pores, or separating their parts,
+be render'd sufficiently opake; as Salts or wet Paper, or the _Oculus
+Mundi_ Stone by being dried, Horn by being scraped, Glass by being
+reduced to Powder, or otherwise flawed; Turpentine by being stirred
+about with Water till they mix imperfectly, and Water by being form'd
+into many small Bubbles, either alone in the form of Froth, or by
+shaking it together with Oil of Turpentine, or Oil Olive, or with some
+other convenient Liquor, with which it will not perfectly incorporate.
+And to the increase of the opacity of these Bodies, it conduces
+something, that by the 23d Observation the Reflexions of very thin
+transparent Substances are considerably stronger than those made by the
+same Substances of a greater thickness.
+
+
+PROP. IV.
+
+_The Parts of Bodies and their Interstices must not be less than of some
+definite bigness, to render them opake and colour'd._
+
+For the opakest Bodies, if their parts be subtilly divided, (as Metals,
+by being dissolved in acid Menstruums, &c.) become perfectly
+transparent. And you may also remember, that in the eighth Observation
+there was no sensible reflexion at the Superficies of the
+Object-glasses, where they were very near one another, though they did
+not absolutely touch. And in the 17th Observation the Reflexion of the
+Water-bubble where it became thinnest was almost insensible, so as to
+cause very black Spots to appear on the top of the Bubble, by the want
+of reflected Light.
+
+On these grounds I perceive it is that Water, Salt, Glass, Stones, and
+such like Substances, are transparent. For, upon divers Considerations,
+they seem to be as full of Pores or Interstices between their parts as
+other Bodies are, but yet their Parts and Interstices to be too small to
+cause Reflexions in their common Surfaces.
+
+
+PROP. V.
+
+_The transparent parts of Bodies, according to their several sizes,
+reflect Rays of one Colour, and transmit those of another, on the same
+grounds that thin Plates or Bubbles do reflect or transmit those Rays.
+And this I take to be the ground of all their Colours._
+
+For if a thinn'd or plated Body, which being of an even thickness,
+appears all over of one uniform Colour, should be slit into Threads, or
+broken into Fragments, of the same thickness with the Plate; I see no
+reason why every Thread or Fragment should not keep its Colour, and by
+consequence why a heap of those Threads or Fragments should not
+constitute a Mass or Powder of the same Colour, which the Plate
+exhibited before it was broken. And the parts of all natural Bodies
+being like so many Fragments of a Plate, must on the same grounds
+exhibit the same Colours.
+
+Now, that they do so will appear by the affinity of their Properties.
+The finely colour'd Feathers of some Birds, and particularly those of
+Peacocks Tails, do, in the very same part of the Feather, appear of
+several Colours in several Positions of the Eye, after the very same
+manner that thin Plates were found to do in the 7th and 19th
+Observations, and therefore their Colours arise from the thinness of the
+transparent parts of the Feathers; that is, from the slenderness of the
+very fine Hairs, or _Capillamenta_, which grow out of the sides of the
+grosser lateral Branches or Fibres of those Feathers. And to the same
+purpose it is, that the Webs of some Spiders, by being spun very fine,
+have appeared colour'd, as some have observ'd, and that the colour'd
+Fibres of some Silks, by varying the Position of the Eye, do vary their
+Colour. Also the Colours of Silks, Cloths, and other Substances, which
+Water or Oil can intimately penetrate, become more faint and obscure by
+being immerged in those Liquors, and recover their Vigor again by being
+dried; much after the manner declared of thin Bodies in the 10th and
+21st Observations. Leaf-Gold, some sorts of painted Glass, the Infusion
+of _Lignum Nephriticum_, and some other Substances, reflect one Colour,
+and transmit another; like thin Bodies in the 9th and 20th Observations.
+And some of those colour'd Powders which Painters use, may have their
+Colours a little changed, by being very elaborately and finely ground.
+Where I see not what can be justly pretended for those changes, besides
+the breaking of their parts into less parts by that contrition, after
+the same manner that the Colour of a thin Plate is changed by varying
+its thickness. For which reason also it is that the colour'd Flowers of
+Plants and Vegetables, by being bruised, usually become more transparent
+than before, or at least in some degree or other change their Colours.
+Nor is it much less to my purpose, that, by mixing divers Liquors, very
+odd and remarkable Productions and Changes of Colours may be effected,
+of which no cause can be more obvious and rational than that the saline
+Corpuscles of one Liquor do variously act upon or unite with the tinging
+Corpuscles of another, so as to make them swell, or shrink, (whereby not
+only their bulk but their density also may be changed,) or to divide
+them into smaller Corpuscles, (whereby a colour'd Liquor may become
+transparent,) or to make many of them associate into one cluster,
+whereby two transparent Liquors may compose a colour'd one. For we see
+how apt those saline Menstruums are to penetrate and dissolve Substances
+to which they are applied, and some of them to precipitate what others
+dissolve. In like manner, if we consider the various Phænomena of the
+Atmosphere, we may observe, that when Vapours are first raised, they
+hinder not the transparency of the Air, being divided into parts too
+small to cause any Reflexion in their Superficies. But when in order to
+compose drops of Rain they begin to coalesce and constitute Globules of
+all intermediate sizes, those Globules, when they become of convenient
+size to reflect some Colours and transmit others, may constitute Clouds
+of various Colours according to their sizes. And I see not what can be
+rationally conceived in so transparent a Substance as Water for the
+production of these Colours, besides the various sizes of its fluid and
+globular Parcels.
+
+
+PROP. VI.
+
+_The parts of Bodies on which their Colours depend, are denser than the
+Medium which pervades their Interstices._
+
+This will appear by considering, that the Colour of a Body depends not
+only on the Rays which are incident perpendicularly on its parts, but on
+those also which are incident at all other Angles. And that according to
+the 7th Observation, a very little variation of obliquity will change
+the reflected Colour, where the thin Body or small Particles is rarer
+than the ambient Medium, insomuch that such a small Particle will at
+diversly oblique Incidences reflect all sorts of Colours, in so great a
+variety that the Colour resulting from them all, confusedly reflected
+from a heap of such Particles, must rather be a white or grey than any
+other Colour, or at best it must be but a very imperfect and dirty
+Colour. Whereas if the thin Body or small Particle be much denser than
+the ambient Medium, the Colours, according to the 19th Observation, are
+so little changed by the variation of obliquity, that the Rays which
+are reflected least obliquely may predominate over the rest, so much as
+to cause a heap of such Particles to appear very intensely of their
+Colour.
+
+It conduces also something to the confirmation of this Proposition,
+that, according to the 22d Observation, the Colours exhibited by the
+denser thin Body within the rarer, are more brisk than those exhibited
+by the rarer within the denser.
+
+
+PROP. VII.
+
+_The bigness of the component parts of natural Bodies may be conjectured
+by their Colours._
+
+For since the parts of these Bodies, by _Prop._ 5. do most probably
+exhibit the same Colours with a Plate of equal thickness, provided they
+have the same refractive density; and since their parts seem for the
+most part to have much the same density with Water or Glass, as by many
+circumstances is obvious to collect; to determine the sizes of those
+parts, you need only have recourse to the precedent Tables, in which the
+thickness of Water or Glass exhibiting any Colour is expressed. Thus if
+it be desired to know the diameter of a Corpuscle, which being of equal
+density with Glass shall reflect green of the third Order; the Number
+16-1/4 shews it to be (16-1/4)/10000 parts of an Inch.
+
+The greatest difficulty is here to know of what Order the Colour of any
+Body is. And for this end we must have recourse to the 4th and 18th
+Observations; from whence may be collected these particulars.
+
+_Scarlets_, and other _reds_, _oranges_, and _yellows_, if they be pure
+and intense, are most probably of the second order. Those of the first
+and third order also may be pretty good; only the yellow of the first
+order is faint, and the orange and red of the third Order have a great
+Mixture of violet and blue.
+
+There may be good _Greens_ of the fourth Order, but the purest are of
+the third. And of this Order the green of all Vegetables seems to be,
+partly by reason of the Intenseness of their Colours, and partly because
+when they wither some of them turn to a greenish yellow, and others to a
+more perfect yellow or orange, or perhaps to red, passing first through
+all the aforesaid intermediate Colours. Which Changes seem to be
+effected by the exhaling of the Moisture which may leave the tinging
+Corpuscles more dense, and something augmented by the Accretion of the
+oily and earthy Part of that Moisture. Now the green, without doubt, is
+of the same Order with those Colours into which it changeth, because the
+Changes are gradual, and those Colours, though usually not very full,
+yet are often too full and lively to be of the fourth Order.
+
+_Blues_ and _Purples_ may be either of the second or third Order, but
+the best are of the third. Thus the Colour of Violets seems to be of
+that Order, because their Syrup by acid Liquors turns red, and by
+urinous and alcalizate turns green. For since it is of the Nature of
+Acids to dissolve or attenuate, and of Alcalies to precipitate or
+incrassate, if the Purple Colour of the Syrup was of the second Order,
+an acid Liquor by attenuating its tinging Corpuscles would change it to
+a red of the first Order, and an Alcali by incrassating them would
+change it to a green of the second Order; which red and green,
+especially the green, seem too imperfect to be the Colours produced by
+these Changes. But if the said Purple be supposed of the third Order,
+its Change to red of the second, and green of the third, may without any
+Inconvenience be allow'd.
+
+If there be found any Body of a deeper and less reddish Purple than that
+of the Violets, its Colour most probably is of the second Order. But yet
+there being no Body commonly known whose Colour is constantly more deep
+than theirs, I have made use of their Name to denote the deepest and
+least reddish Purples, such as manifestly transcend their Colour in
+purity.
+
+The _blue_ of the first Order, though very faint and little, may
+possibly be the Colour of some Substances; and particularly the azure
+Colour of the Skies seems to be of this Order. For all Vapours when they
+begin to condense and coalesce into small Parcels, become first of that
+Bigness, whereby such an Azure must be reflected before they can
+constitute Clouds of other Colours. And so this being the first Colour
+which Vapours begin to reflect, it ought to be the Colour of the finest
+and most transparent Skies, in which Vapours are not arrived to that
+Grossness requisite to reflect other Colours, as we find it is by
+Experience.
+
+_Whiteness_, if most intense and luminous, is that of the first Order,
+if less strong and luminous, a Mixture of the Colours of several Orders.
+Of this last kind is the Whiteness of Froth, Paper, Linnen, and most
+white Substances; of the former I reckon that of white Metals to be. For
+whilst the densest of Metals, Gold, if foliated, is transparent, and all
+Metals become transparent if dissolved in Menstruums or vitrified, the
+Opacity of white Metals ariseth not from their Density alone. They being
+less dense than Gold would be more transparent than it, did not some
+other Cause concur with their Density to make them opake. And this Cause
+I take to be such a Bigness of their Particles as fits them to reflect
+the white of the first order. For, if they be of other Thicknesses they
+may reflect other Colours, as is manifest by the Colours which appear
+upon hot Steel in tempering it, and sometimes upon the Surface of melted
+Metals in the Skin or Scoria which arises upon them in their cooling.
+And as the white of the first order is the strongest which can be made
+by Plates of transparent Substances, so it ought to be stronger in the
+denser Substances of Metals than in the rarer of Air, Water, and Glass.
+Nor do I see but that metallick Substances of such a Thickness as may
+fit them to reflect the white of the first order, may, by reason of
+their great Density (according to the Tenor of the first of these
+Propositions) reflect all the Light incident upon them, and so be as
+opake and splendent as it's possible for any Body to be. Gold, or Copper
+mix'd with less than half their Weight of Silver, or Tin, or Regulus of
+Antimony, in fusion, or amalgamed with a very little Mercury, become
+white; which shews both that the Particles of white Metals have much
+more Superficies, and so are smaller, than those of Gold and Copper, and
+also that they are so opake as not to suffer the Particles of Gold or
+Copper to shine through them. Now it is scarce to be doubted but that
+the Colours of Gold and Copper are of the second and third order, and
+therefore the Particles of white Metals cannot be much bigger than is
+requisite to make them reflect the white of the first order. The
+Volatility of Mercury argues that they are not much bigger, nor may they
+be much less, lest they lose their Opacity, and become either
+transparent as they do when attenuated by Vitrification, or by Solution
+in Menstruums, or black as they do when ground smaller, by rubbing
+Silver, or Tin, or Lead, upon other Substances to draw black Lines. The
+first and only Colour which white Metals take by grinding their
+Particles smaller, is black, and therefore their white ought to be that
+which borders upon the black Spot in the Center of the Rings of Colours,
+that is, the white of the first order. But, if you would hence gather
+the Bigness of metallick Particles, you must allow for their Density.
+For were Mercury transparent, its Density is such that the Sine of
+Incidence upon it (by my Computation) would be to the Sine of its
+Refraction, as 71 to 20, or 7 to 2. And therefore the Thickness of its
+Particles, that they may exhibit the same Colours with those of Bubbles
+of Water, ought to be less than the Thickness of the Skin of those
+Bubbles in the Proportion of 2 to 7. Whence it's possible, that the
+Particles of Mercury may be as little as the Particles of some
+transparent and volatile Fluids, and yet reflect the white of the first
+order.
+
+Lastly, for the production of _black_, the Corpuscles must be less than
+any of those which exhibit Colours. For at all greater sizes there is
+too much Light reflected to constitute this Colour. But if they be
+supposed a little less than is requisite to reflect the white and very
+faint blue of the first order, they will, according to the 4th, 8th,
+17th and 18th Observations, reflect so very little Light as to appear
+intensely black, and yet may perhaps variously refract it to and fro
+within themselves so long, until it happen to be stifled and lost, by
+which means they will appear black in all positions of the Eye without
+any transparency. And from hence may be understood why Fire, and the
+more subtile dissolver Putrefaction, by dividing the Particles of
+Substances, turn them to black, why small quantities of black Substances
+impart their Colour very freely and intensely to other Substances to
+which they are applied; the minute Particles of these, by reason of
+their very great number, easily overspreading the gross Particles of
+others; why Glass ground very elaborately with Sand on a Copper Plate,
+'till it be well polish'd, makes the Sand, together with what is worn
+off from the Glass and Copper, become very black: why black Substances
+do soonest of all others become hot in the Sun's Light and burn, (which
+Effect may proceed partly from the multitude of Refractions in a little
+room, and partly from the easy Commotion of so very small Corpuscles;)
+and why blacks are usually a little inclined to a bluish Colour. For
+that they are so may be seen by illuminating white Paper by Light
+reflected from black Substances. For the Paper will usually appear of a
+bluish white; and the reason is, that black borders in the obscure blue
+of the order described in the 18th Observation, and therefore reflects
+more Rays of that Colour than of any other.
+
+In these Descriptions I have been the more particular, because it is not
+impossible but that Microscopes may at length be improved to the
+discovery of the Particles of Bodies on which their Colours depend, if
+they are not already in some measure arrived to that degree of
+perfection. For if those Instruments are or can be so far improved as
+with sufficient distinctness to represent Objects five or six hundred
+times bigger than at a Foot distance they appear to our naked Eyes, I
+should hope that we might be able to discover some of the greatest of
+those Corpuscles. And by one that would magnify three or four thousand
+times perhaps they might all be discover'd, but those which produce
+blackness. In the mean while I see nothing material in this Discourse
+that may rationally be doubted of, excepting this Position: That
+transparent Corpuscles of the same thickness and density with a Plate,
+do exhibit the same Colour. And this I would have understood not without
+some Latitude, as well because those Corpuscles may be of irregular
+Figures, and many Rays must be obliquely incident on them, and so have
+a shorter way through them than the length of their Diameters, as
+because the straitness of the Medium put in on all sides within such
+Corpuscles may a little alter its Motions or other qualities on which
+the Reflexion depends. But yet I cannot much suspect the last, because I
+have observed of some small Plates of Muscovy Glass which were of an
+even thickness, that through a Microscope they have appeared of the same
+Colour at their edges and corners where the included Medium was
+terminated, which they appeared of in other places. However it will add
+much to our Satisfaction, if those Corpuscles can be discover'd with
+Microscopes; which if we shall at length attain to, I fear it will be
+the utmost improvement of this Sense. For it seems impossible to see the
+more secret and noble Works of Nature within the Corpuscles by reason of
+their transparency.
+
+
+PROP. VIII.
+
+_The Cause of Reflexion is not the impinging of Light on the solid or
+impervious parts of Bodies, as is commonly believed._
+
+This will appear by the following Considerations. First, That in the
+passage of Light out of Glass into Air there is a Reflexion as strong as
+in its passage out of Air into Glass, or rather a little stronger, and
+by many degrees stronger than in its passage out of Glass into Water.
+And it seems not probable that Air should have more strongly reflecting
+parts than Water or Glass. But if that should possibly be supposed, yet
+it will avail nothing; for the Reflexion is as strong or stronger when
+the Air is drawn away from the Glass, (suppose by the Air-Pump invented
+by _Otto Gueriet_, and improved and made useful by Mr. _Boyle_) as when
+it is adjacent to it. Secondly, If Light in its passage out of Glass
+into Air be incident more obliquely than at an Angle of 40 or 41 Degrees
+it is wholly reflected, if less obliquely it is in great measure
+transmitted. Now it is not to be imagined that Light at one degree of
+obliquity should meet with Pores enough in the Air to transmit the
+greater part of it, and at another degree of obliquity should meet with
+nothing but parts to reflect it wholly, especially considering that in
+its passage out of Air into Glass, how oblique soever be its Incidence,
+it finds Pores enough in the Glass to transmit a great part of it. If
+any Man suppose that it is not reflected by the Air, but by the outmost
+superficial parts of the Glass, there is still the same difficulty:
+Besides, that such a Supposition is unintelligible, and will also appear
+to be false by applying Water behind some part of the Glass instead of
+Air. For so in a convenient obliquity of the Rays, suppose of 45 or 46
+Degrees, at which they are all reflected where the Air is adjacent to
+the Glass, they shall be in great measure transmitted where the Water is
+adjacent to it; which argues, that their Reflexion or Transmission
+depends on the constitution of the Air and Water behind the Glass, and
+not on the striking of the Rays upon the parts of the Glass. Thirdly,
+If the Colours made by a Prism placed at the entrance of a Beam of Light
+into a darken'd Room be successively cast on a second Prism placed at a
+greater distance from the former, in such manner that they are all alike
+incident upon it, the second Prism may be so inclined to the incident
+Rays, that those which are of a blue Colour shall be all reflected by
+it, and yet those of a red Colour pretty copiously transmitted. Now if
+the Reflexion be caused by the parts of Air or Glass, I would ask, why
+at the same Obliquity of Incidence the blue should wholly impinge on
+those parts, so as to be all reflected, and yet the red find Pores
+enough to be in a great measure transmitted. Fourthly, Where two Glasses
+touch one another, there is no sensible Reflexion, as was declared in
+the first Observation; and yet I see no reason why the Rays should not
+impinge on the parts of Glass, as much when contiguous to other Glass as
+when contiguous to Air. Fifthly, When the top of a Water-Bubble (in the
+17th Observation,) by the continual subsiding and exhaling of the Water
+grew very thin, there was such a little and almost insensible quantity
+of Light reflected from it, that it appeared intensely black; whereas
+round about that black Spot, where the Water was thicker, the Reflexion
+was so strong as to make the Water seem very white. Nor is it only at
+the least thickness of thin Plates or Bubbles, that there is no manifest
+Reflexion, but at many other thicknesses continually greater and
+greater. For in the 15th Observation the Rays of the same Colour were by
+turns transmitted at one thickness, and reflected at another thickness,
+for an indeterminate number of Successions. And yet in the Superficies
+of the thinned Body, where it is of any one thickness, there are as many
+parts for the Rays to impinge on, as where it is of any other thickness.
+Sixthly, If Reflexion were caused by the parts of reflecting Bodies, it
+would be impossible for thin Plates or Bubbles, at one and the same
+place, to reflect the Rays of one Colour, and transmit those of another,
+as they do according to the 13th and 15th Observations. For it is not to
+be imagined that at one place the Rays which, for instance, exhibit a
+blue Colour, should have the fortune to dash upon the parts, and those
+which exhibit a red to hit upon the Pores of the Body; and then at
+another place, where the Body is either a little thicker or a little
+thinner, that on the contrary the blue should hit upon its pores, and
+the red upon its parts. Lastly, Were the Rays of Light reflected by
+impinging on the solid parts of Bodies, their Reflexions from polish'd
+Bodies could not be so regular as they are. For in polishing Glass with
+Sand, Putty, or Tripoly, it is not to be imagined that those Substances
+can, by grating and fretting the Glass, bring all its least Particles to
+an accurate Polish; so that all their Surfaces shall be truly plain or
+truly spherical, and look all the same way, so as together to compose
+one even Surface. The smaller the Particles of those Substances are, the
+smaller will be the Scratches by which they continually fret and wear
+away the Glass until it be polish'd; but be they never so small they can
+wear away the Glass no otherwise than by grating and scratching it, and
+breaking the Protuberances; and therefore polish it no otherwise than by
+bringing its roughness to a very fine Grain, so that the Scratches and
+Frettings of the Surface become too small to be visible. And therefore
+if Light were reflected by impinging upon the solid parts of the Glass,
+it would be scatter'd as much by the most polish'd Glass as by the
+roughest. So then it remains a Problem, how Glass polish'd by fretting
+Substances can reflect Light so regularly as it does. And this Problem
+is scarce otherwise to be solved, than by saying, that the Reflexion of
+a Ray is effected, not by a single point of the reflecting Body, but by
+some power of the Body which is evenly diffused all over its Surface,
+and by which it acts upon the Ray without immediate Contact. For that
+the parts of Bodies do act upon Light at a distance shall be shewn
+hereafter.
+
+Now if Light be reflected, not by impinging on the solid parts of
+Bodies, but by some other principle; it's probable that as many of its
+Rays as impinge on the solid parts of Bodies are not reflected but
+stifled and lost in the Bodies. For otherwise we must allow two sorts of
+Reflexions. Should all the Rays be reflected which impinge on the
+internal parts of clear Water or Crystal, those Substances would rather
+have a cloudy Colour than a clear Transparency. To make Bodies look
+black, it's necessary that many Rays be stopp'd, retained, and lost in
+them; and it seems not probable that any Rays can be stopp'd and
+stifled in them which do not impinge on their parts.
+
+And hence we may understand that Bodies are much more rare and porous
+than is commonly believed. Water is nineteen times lighter, and by
+consequence nineteen times rarer than Gold; and Gold is so rare as very
+readily and without the least opposition to transmit the magnetick
+Effluvia, and easily to admit Quicksilver into its Pores, and to let
+Water pass through it. For a concave Sphere of Gold filled with Water,
+and solder'd up, has, upon pressing the Sphere with great force, let the
+Water squeeze through it, and stand all over its outside in multitudes
+of small Drops, like Dew, without bursting or cracking the Body of the
+Gold, as I have been inform'd by an Eye witness. From all which we may
+conclude, that Gold has more Pores than solid parts, and by consequence
+that Water has above forty times more Pores than Parts. And he that
+shall find out an Hypothesis, by which Water may be so rare, and yet not
+be capable of compression by force, may doubtless by the same Hypothesis
+make Gold, and Water, and all other Bodies, as much rarer as he pleases;
+so that Light may find a ready passage through transparent Substances.
+
+The Magnet acts upon Iron through all dense Bodies not magnetick nor red
+hot, without any diminution of its Virtue; as for instance, through
+Gold, Silver, Lead, Glass, Water. The gravitating Power of the Sun is
+transmitted through the vast Bodies of the Planets without any
+diminution, so as to act upon all their parts to their very centers
+with the same Force and according to the same Laws, as if the part upon
+which it acts were not surrounded with the Body of the Planet, The Rays
+of Light, whether they be very small Bodies projected, or only Motion or
+Force propagated, are moved in right Lines; and whenever a Ray of Light
+is by any Obstacle turned out of its rectilinear way, it will never
+return into the same rectilinear way, unless perhaps by very great
+accident. And yet Light is transmitted through pellucid solid Bodies in
+right Lines to very great distances. How Bodies can have a sufficient
+quantity of Pores for producing these Effects is very difficult to
+conceive, but perhaps not altogether impossible. For the Colours of
+Bodies arise from the Magnitudes of the Particles which reflect them, as
+was explained above. Now if we conceive these Particles of Bodies to be
+so disposed amongst themselves, that the Intervals or empty Spaces
+between them may be equal in magnitude to them all; and that these
+Particles may be composed of other Particles much smaller, which have as
+much empty Space between them as equals all the Magnitudes of these
+smaller Particles: And that in like manner these smaller Particles are
+again composed of others much smaller, all which together are equal to
+all the Pores or empty Spaces between them; and so on perpetually till
+you come to solid Particles, such as have no Pores or empty Spaces
+within them: And if in any gross Body there be, for instance, three such
+degrees of Particles, the least of which are solid; this Body will have
+seven times more Pores than solid Parts. But if there be four such
+degrees of Particles, the least of which are solid, the Body will have
+fifteen times more Pores than solid Parts. If there be five degrees, the
+Body will have one and thirty times more Pores than solid Parts. If six
+degrees, the Body will have sixty and three times more Pores than solid
+Parts. And so on perpetually. And there are other ways of conceiving how
+Bodies may be exceeding porous. But what is really their inward Frame is
+not yet known to us.
+
+
+PROP. IX.
+
+_Bodies reflect and refract Light by one and the same power, variously
+exercised in various Circumstances._
+
+This appears by several Considerations. First, Because when Light goes
+out of Glass into Air, as obliquely as it can possibly do. If its
+Incidence be made still more oblique, it becomes totally reflected. For
+the power of the Glass after it has refracted the Light as obliquely as
+is possible, if the Incidence be still made more oblique, becomes too
+strong to let any of its Rays go through, and by consequence causes
+total Reflexions. Secondly, Because Light is alternately reflected and
+transmitted by thin Plates of Glass for many Successions, accordingly as
+the thickness of the Plate increases in an arithmetical Progression. For
+here the thickness of the Glass determines whether that Power by which
+Glass acts upon Light shall cause it to be reflected, or suffer it to
+be transmitted. And, Thirdly, because those Surfaces of transparent
+Bodies which have the greatest refracting power, reflect the greatest
+quantity of Light, as was shewn in the first Proposition.
+
+
+PROP. X.
+
+_If Light be swifter in Bodies than in Vacuo, in the proportion of the
+Sines which measure the Refraction of the Bodies, the Forces of the
+Bodies to reflect and refract Light, are very nearly proportional to the
+densities of the same Bodies; excepting that unctuous and sulphureous
+Bodies refract more than others of this same density._
+
+[Illustration: FIG. 8.]
+
+Let AB represent the refracting plane Surface of any Body, and IC a Ray
+incident very obliquely upon the Body in C, so that the Angle ACI may be
+infinitely little, and let CR be the refracted Ray. From a given Point B
+perpendicular to the refracting Surface erect BR meeting with the
+refracting Ray CR in R, and if CR represent the Motion of the refracted
+Ray, and this Motion be distinguish'd into two Motions CB and BR,
+whereof CB is parallel to the refracting Plane, and BR perpendicular to
+it: CB shall represent the Motion of the incident Ray, and BR the
+Motion generated by the Refraction, as Opticians have of late explain'd.
+
+Now if any Body or Thing, in moving through any Space of a given breadth
+terminated on both sides by two parallel Planes, be urged forward in all
+parts of that Space by Forces tending directly forwards towards the last
+Plane, and before its Incidence on the first Plane, had no Motion
+towards it, or but an infinitely little one; and if the Forces in all
+parts of that Space, between the Planes, be at equal distances from the
+Planes equal to one another, but at several distances be bigger or less
+in any given Proportion, the Motion generated by the Forces in the whole
+passage of the Body or thing through that Space shall be in a
+subduplicate Proportion of the Forces, as Mathematicians will easily
+understand. And therefore, if the Space of activity of the refracting
+Superficies of the Body be consider'd as such a Space, the Motion of the
+Ray generated by the refracting Force of the Body, during its passage
+through that Space, that is, the Motion BR, must be in subduplicate
+Proportion of that refracting Force. I say therefore, that the Square of
+the Line BR, and by consequence the refracting Force of the Body, is
+very nearly as the density of the same Body. For this will appear by the
+following Table, wherein the Proportion of the Sines which measure the
+Refractions of several Bodies, the Square of BR, supposing CB an unite,
+the Densities of the Bodies estimated by their Specifick Gravities, and
+their Refractive Power in respect of their Densities are set down in
+several Columns.
+
+---------------------+----------------+----------------+----------+-----------
+                     |                |                |          |
+                     |                | The Square     | The      | The
+                     |                | of BR, to      | density  | refractive
+                     | The Proportion | which the      | and      | Power of
+                     | of the Sines of| refracting     | specifick| the Body
+                     | Incidence and  | force of the   | gravity  | in respect
+   The refracting    | Refraction of  | Body is        | of the   | of its
+      Bodies.        | yellow Light.  | proportionate. | Body.    | density.
+---------------------+----------------+----------------+----------+-----------
+A Pseudo-Topazius,   |                |                |          |
+  being a natural,   |                |                |          |
+  pellucid, brittle, |   23 to   14   |    1'699       |  4'27    |   3979
+  hairy Stone, of a  |                |                |          |
+  yellow Colour.     |                |                |          |
+Air.                 | 3201 to 3200   |    0'000625    |  0'0012  |   5208
+Glass of Antimony.   |   17 to    9   |    2'568       |  5'28    |   4864
+A Selenitis.         |   61 to   41   |    1'213       |  2'252   |   5386
+Glass vulgar.        |   31 to   20   |    1'4025      |  2'58    |   5436
+Crystal of the Rock. |   25 to   16   |    1'445       |  2'65    |   5450
+Island Crystal.      |    5 to    3   |    1'778       |  2'72    |   6536
+Sal Gemmæ.           |   17 to   11   |    1'388       |  2'143   |   6477
+Alume.               |   35 to   24   |    1'1267      |  1'714   |   6570
+Borax.               |   22 to   15   |    1'1511      |  1'714   |   6716
+Niter.               |   32 to   21   |    1'345       |  1'9     |   7079
+Dantzick Vitriol.    |  303 to  200   |    1'295       |  1'715   |   7551
+Oil of Vitriol.      |   10 to    7   |    1'041       |  1'7     |   6124
+Rain Water.          |  529 to  396   |    0'7845      |  1'      |   7845
+Gum Arabick.         |   31 to   21   |    1'179       |  1'375   |   8574
+Spirit of Wine well  |                |                |          |
+  rectified.         |  100 to   73   |    0'8765      |  0'866   |  10121
+Camphire.            |    3 to    2   |    1'25        |  0'996   |  12551
+Oil Olive.           |   22 to   15   |    1'1511      |  0'913   |  12607
+Linseed Oil.         |   40 to   27   |    1'1948      |  0'932   |  12819
+Spirit of Turpentine.|   25 to   17   |    1'1626      |  0'874   |  13222
+Amber.               |   14 to    9   |    1'42        |  1'04    |  13654
+A Diamond.           |  100 to   41   |    4'949       |  3'4     |  14556
+---------------------+----------------+----------------+----------+-----------
+
+The Refraction of the Air in this Table is determin'd by that of the
+Atmosphere observed by Astronomers. For, if Light pass through many
+refracting Substances or Mediums gradually denser and denser, and
+terminated with parallel Surfaces, the Sum of all the Refractions will
+be equal to the single Refraction which it would have suffer'd in
+passing immediately out of the first Medium into the last. And this
+holds true, though the Number of the refracting Substances be increased
+to Infinity, and the Distances from one another as much decreased, so
+that the Light may be refracted in every Point of its Passage, and by
+continual Refractions bent into a Curve-Line. And therefore the whole
+Refraction of Light in passing through the Atmosphere from the highest
+and rarest Part thereof down to the lowest and densest Part, must be
+equal to the Refraction which it would suffer in passing at like
+Obliquity out of a Vacuum immediately into Air of equal Density with
+that in the lowest Part of the Atmosphere.
+
+Now, although a Pseudo-Topaz, a Selenitis, Rock Crystal, Island Crystal,
+Vulgar Glass (that is, Sand melted together) and Glass of Antimony,
+which are terrestrial stony alcalizate Concretes, and Air which probably
+arises from such Substances by Fermentation, be Substances very
+differing from one another in Density, yet by this Table, they have
+their refractive Powers almost in the same Proportion to one another as
+their Densities are, excepting that the Refraction of that strange
+Substance, Island Crystal is a little bigger than the rest. And
+particularly Air, which is 3500 Times rarer than the Pseudo-Topaz, and
+4400 Times rarer than Glass of Antimony, and 2000 Times rarer than the
+Selenitis, Glass vulgar, or Crystal of the Rock, has notwithstanding its
+rarity the same refractive Power in respect of its Density which those
+very dense Substances have in respect of theirs, excepting so far as
+those differ from one another.
+
+Again, the Refraction of Camphire, Oil Olive, Linseed Oil, Spirit of
+Turpentine and Amber, which are fat sulphureous unctuous Bodies, and a
+Diamond, which probably is an unctuous Substance coagulated, have their
+refractive Powers in Proportion to one another as their Densities
+without any considerable Variation. But the refractive Powers of these
+unctuous Substances are two or three Times greater in respect of their
+Densities than the refractive Powers of the former Substances in respect
+of theirs.
+
+Water has a refractive Power in a middle degree between those two sorts
+of Substances, and probably is of a middle nature. For out of it grow
+all vegetable and animal Substances, which consist as well of
+sulphureous fat and inflamable Parts, as of earthy lean and alcalizate
+ones.
+
+Salts and Vitriols have refractive Powers in a middle degree between
+those of earthy Substances and Water, and accordingly are composed of
+those two sorts of Substances. For by distillation and rectification of
+their Spirits a great Part of them goes into Water, and a great Part
+remains behind in the form of a dry fix'd Earth capable of
+Vitrification.
+
+Spirit of Wine has a refractive Power in a middle degree between those
+of Water and oily Substances, and accordingly seems to be composed of
+both, united by Fermentation; the Water, by means of some saline Spirits
+with which 'tis impregnated, dissolving the Oil, and volatizing it by
+the Action. For Spirit of Wine is inflamable by means of its oily Parts,
+and being distilled often from Salt of Tartar, grow by every
+distillation more and more aqueous and phlegmatick. And Chymists
+observe, that Vegetables (as Lavender, Rue, Marjoram, &c.) distilled
+_per se_, before fermentation yield Oils without any burning Spirits,
+but after fermentation yield ardent Spirits without Oils: Which shews,
+that their Oil is by fermentation converted into Spirit. They find also,
+that if Oils be poured in a small quantity upon fermentating Vegetables,
+they distil over after fermentation in the form of Spirits.
+
+So then, by the foregoing Table, all Bodies seem to have their
+refractive Powers proportional to their Densities, (or very nearly;)
+excepting so far as they partake more or less of sulphureous oily
+Particles, and thereby have their refractive Power made greater or less.
+Whence it seems rational to attribute the refractive Power of all Bodies
+chiefly, if not wholly, to the sulphureous Parts with which they abound.
+For it's probable that all Bodies abound more or less with Sulphurs. And
+as Light congregated by a Burning-glass acts most upon sulphureous
+Bodies, to turn them into Fire and Flame; so, since all Action is
+mutual, Sulphurs ought to act most upon Light. For that the action
+between Light and Bodies is mutual, may appear from this Consideration;
+That the densest Bodies which refract and reflect Light most strongly,
+grow hottest in the Summer Sun, by the action of the refracted or
+reflected Light.
+
+I have hitherto explain'd the power of Bodies to reflect and refract,
+and shew'd, that thin transparent Plates, Fibres, and Particles, do,
+according to their several thicknesses and densities, reflect several
+sorts of Rays, and thereby appear of several Colours; and by consequence
+that nothing more is requisite for producing all the Colours of natural
+Bodies, than the several sizes and densities of their transparent
+Particles. But whence it is that these Plates, Fibres, and Particles,
+do, according to their several thicknesses and densities, reflect
+several sorts of Rays, I have not yet explain'd. To give some insight
+into this matter, and make way for understanding the next part of this
+Book, I shall conclude this part with a few more Propositions. Those
+which preceded respect the nature of Bodies, these the nature of Light:
+For both must be understood, before the reason of their Actions upon one
+another can be known. And because the last Proposition depended upon the
+velocity of Light, I will begin with a Proposition of that kind.
+
+
+PROP. XI.
+
+_Light is propagated from luminous Bodies in time, and spends about
+seven or eight Minutes of an Hour in passing from the Sun to the Earth._
+
+This was observed first by _Roemer_, and then by others, by means of the
+Eclipses of the Satellites of _Jupiter_. For these Eclipses, when the
+Earth is between the Sun and _Jupiter_, happen about seven or eight
+Minutes sooner than they ought to do by the Tables, and when the Earth
+is beyond the Sun they happen about seven or eight Minutes later than
+they ought to do; the reason being, that the Light of the Satellites has
+farther to go in the latter case than in the former by the Diameter of
+the Earth's Orbit. Some inequalities of time may arise from the
+Excentricities of the Orbs of the Satellites; but those cannot answer in
+all the Satellites, and at all times to the Position and Distance of the
+Earth from the Sun. The mean motions of _Jupiter_'s Satellites is also
+swifter in his descent from his Aphelium to his Perihelium, than in his
+ascent in the other half of his Orb. But this inequality has no respect
+to the position of the Earth, and in the three interior Satellites is
+insensible, as I find by computation from the Theory of their Gravity.
+
+
+PROP. XII.
+
+_Every Ray of Light in its passage through any refracting Surface is put
+into a certain transient Constitution or State, which in the progress of
+the Ray returns at equal Intervals, and disposes the Ray at every return
+to be easily transmitted through the next refracting Surface, and
+between the returns to be easily reflected by it._
+
+This is manifest by the 5th, 9th, 12th, and 15th Observations. For by
+those Observations it appears, that one and the same sort of Rays at
+equal Angles of Incidence on any thin transparent Plate, is alternately
+reflected and transmitted for many Successions accordingly as the
+thickness of the Plate increases in arithmetical Progression of the
+Numbers, 0, 1, 2, 3, 4, 5, 6, 7, 8, &c. so that if the first Reflexion
+(that which makes the first or innermost of the Rings of Colours there
+described) be made at the thickness 1, the Rays shall be transmitted at
+the thicknesses 0, 2, 4, 6, 8, 10, 12, &c. and thereby make the central
+Spot and Rings of Light, which appear by transmission, and be reflected
+at the thickness 1, 3, 5, 7, 9, 11, &c. and thereby make the Rings which
+appear by Reflexion. And this alternate Reflexion and Transmission, as I
+gather by the 24th Observation, continues for above an hundred
+vicissitudes, and by the Observations in the next part of this Book, for
+many thousands, being propagated from one Surface of a Glass Plate to
+the other, though the thickness of the Plate be a quarter of an Inch or
+above: So that this alternation seems to be propagated from every
+refracting Surface to all distances without end or limitation.
+
+This alternate Reflexion and Refraction depends on both the Surfaces of
+every thin Plate, because it depends on their distance. By the 21st
+Observation, if either Surface of a thin Plate of _Muscovy_ Glass be
+wetted, the Colours caused by the alternate Reflexion and Refraction
+grow faint, and therefore it depends on them both.
+
+It is therefore perform'd at the second Surface; for if it were
+perform'd at the first, before the Rays arrive at the second, it would
+not depend on the second.
+
+It is also influenced by some action or disposition, propagated from the
+first to the second, because otherwise at the second it would not depend
+on the first. And this action or disposition, in its propagation,
+intermits and returns by equal Intervals, because in all its progress it
+inclines the Ray at one distance from the first Surface to be reflected
+by the second, at another to be transmitted by it, and that by equal
+Intervals for innumerable vicissitudes. And because the Ray is disposed
+to Reflexion at the distances 1, 3, 5, 7, 9, &c. and to Transmission at
+the distances 0, 2, 4, 6, 8, 10, &c. (for its transmission through the
+first Surface, is at the distance 0, and it is transmitted through both
+together, if their distance be infinitely little or much less than 1)
+the disposition to be transmitted at the distances 2, 4, 6, 8, 10, &c.
+is to be accounted a return of the same disposition which the Ray first
+had at the distance 0, that is at its transmission through the first
+refracting Surface. All which is the thing I would prove.
+
+What kind of action or disposition this is; Whether it consists in a
+circulating or a vibrating motion of the Ray, or of the Medium, or
+something else, I do not here enquire. Those that are averse from
+assenting to any new Discoveries, but such as they can explain by an
+Hypothesis, may for the present suppose, that as Stones by falling upon
+Water put the Water into an undulating Motion, and all Bodies by
+percussion excite vibrations in the Air; so the Rays of Light, by
+impinging on any refracting or reflecting Surface, excite vibrations in
+the refracting or reflecting Medium or Substance, and by exciting them
+agitate the solid parts of the refracting or reflecting Body, and by
+agitating them cause the Body to grow warm or hot; that the vibrations
+thus excited are propagated in the refracting or reflecting Medium or
+Substance, much after the manner that vibrations are propagated in the
+Air for causing Sound, and move faster than the Rays so as to overtake
+them; and that when any Ray is in that part of the vibration which
+conspires with its Motion, it easily breaks through a refracting
+Surface, but when it is in the contrary part of the vibration which
+impedes its Motion, it is easily reflected; and, by consequence, that
+every Ray is successively disposed to be easily reflected, or easily
+transmitted, by every vibration which overtakes it. But whether this
+Hypothesis be true or false I do not here consider. I content my self
+with the bare Discovery, that the Rays of Light are by some cause or
+other alternately disposed to be reflected or refracted for many
+vicissitudes.
+
+
+DEFINITION.
+
+_The returns of the disposition of any Ray to be reflected I will call
+its_ Fits of easy Reflexion, _and those of its disposition to be
+transmitted its_ Fits of easy Transmission, _and the space it passes
+between every return and the next return, the_ Interval of its Fits.
+
+
+PROP. XIII.
+
+_The reason why the Surfaces of all thick transparent Bodies reflect
+part of the Light incident on them, and refract the rest, is, that some
+Rays at their Incidence are in Fits of easy Reflexion, and others in
+Fits of easy Transmission._
+
+This may be gather'd from the 24th Observation, where the Light
+reflected by thin Plates of Air and Glass, which to the naked Eye
+appear'd evenly white all over the Plate, did through a Prism appear
+waved with many Successions of Light and Darkness made by alternate Fits
+of easy Reflexion and easy Transmission, the Prism severing and
+distinguishing the Waves of which the white reflected Light was
+composed, as was explain'd above.
+
+And hence Light is in Fits of easy Reflexion and easy Transmission,
+before its Incidence on transparent Bodies. And probably it is put into
+such fits at its first emission from luminous Bodies, and continues in
+them during all its progress. For these Fits are of a lasting nature, as
+will appear by the next part of this Book.
+
+In this Proposition I suppose the transparent Bodies to be thick;
+because if the thickness of the Body be much less than the Interval of
+the Fits of easy Reflexion and Transmission of the Rays, the Body loseth
+its reflecting power. For if the Rays, which at their entering into the
+Body are put into Fits of easy Transmission, arrive at the farthest
+Surface of the Body before they be out of those Fits, they must be
+transmitted. And this is the reason why Bubbles of Water lose their
+reflecting power when they grow very thin; and why all opake Bodies,
+when reduced into very small parts, become transparent.
+
+
+PROP. XIV.
+
+_Those Surfaces of transparent Bodies, which if the Ray be in a Fit of
+Refraction do refract it most strongly, if the Ray be in a Fit of
+Reflexion do reflect it most easily._
+
+For we shewed above, in _Prop._ 8. that the cause of Reflexion is not
+the impinging of Light on the solid impervious parts of Bodies, but some
+other power by which those solid parts act on Light at a distance. We
+shewed also in _Prop._ 9. that Bodies reflect and refract Light by one
+and the same power, variously exercised in various circumstances; and in
+_Prop._ 1. that the most strongly refracting Surfaces reflect the most
+Light: All which compared together evince and rarify both this and the
+last Proposition.
+
+
+PROP. XV.
+
+_In any one and the same sort of Rays, emerging in any Angle out of any
+refracting Surface into one and the same Medium, the Interval of the
+following Fits of easy Reflexion and Transmission are either accurately
+or very nearly, as the Rectangle of the Secant of the Angle of
+Refraction, and of the Secant of another Angle, whose Sine is the first
+of 106 arithmetical mean Proportionals, between the Sines of Incidence
+and Refraction, counted from the Sine of Refraction._
+
+This is manifest by the 7th and 19th Observations.
+
+
+PROP. XVI.
+
+_In several sorts of Rays emerging in equal Angles out of any refracting
+Surface into the same Medium, the Intervals of the following Fits of
+easy Reflexion and easy Transmission are either accurately, or very
+nearly, as the Cube-Roots of the Squares of the lengths of a Chord,
+which found the Notes in an Eight_, sol, la, fa, sol, la, mi, fa, sol,
+_with all their intermediate degrees answering to the Colours of those
+Rays, according to the Analogy described in the seventh Experiment of
+the second Part of the first Book._
+
+This is manifest by the 13th and 14th Observations.
+
+
+PROP. XVII.
+
+_If Rays of any sort pass perpendicularly into several Mediums, the
+Intervals of the Fits of easy Reflexion and Transmission in any one
+Medium, are to those Intervals in any other, as the Sine of Incidence to
+the Sine of Refraction, when the Rays pass out of the first of those two
+Mediums into the second._
+
+This is manifest by the 10th Observation.
+
+
+PROP. XVIII.
+
+_If the Rays which paint the Colour in the Confine of yellow and orange
+pass perpendicularly out of any Medium into Air, the Intervals of their
+Fits of easy Reflexion are the 1/89000th part of an Inch. And of the
+same length are the Intervals of their Fits of easy Transmission._
+
+This is manifest by the 6th Observation. From these Propositions it is
+easy to collect the Intervals of the Fits of easy Reflexion and easy
+Transmission of any sort of Rays refracted in any angle into any Medium;
+and thence to know, whether the Rays shall be reflected or transmitted
+at their subsequent Incidence upon any other pellucid Medium. Which
+thing, being useful for understanding the next part of this Book, was
+here to be set down. And for the same reason I add the two following
+Propositions.
+
+
+PROP. XIX.
+
+_If any sort of Rays falling on the polite Surface of any pellucid
+Medium be reflected back, the Fits of easy Reflexion, which they have at
+the point of Reflexion, shall still continue to return; and the Returns
+shall be at distances from the point of Reflexion in the arithmetical
+progression of the Numbers 2, 4, 6, 8, 10, 12, &c. and between these
+Fits the Rays shall be in Fits of easy Transmission._
+
+For since the Fits of easy Reflexion and easy Transmission are of a
+returning nature, there is no reason why these Fits, which continued
+till the Ray arrived at the reflecting Medium, and there inclined the
+Ray to Reflexion, should there cease. And if the Ray at the point of
+Reflexion was in a Fit of easy Reflexion, the progression of the
+distances of these Fits from that point must begin from 0, and so be of
+the Numbers 0, 2, 4, 6, 8, &c. And therefore the progression of the
+distances of the intermediate Fits of easy Transmission, reckon'd from
+the same point, must be in the progression of the odd Numbers 1, 3, 5,
+7, 9, &c. contrary to what happens when the Fits are propagated from
+points of Refraction.
+
+
+PROP. XX.
+
+_The Intervals of the Fits of easy Reflexion and easy Transmission,
+propagated from points of Reflexion into any Medium, are equal to the
+Intervals of the like Fits, which the same Rays would have, if refracted
+into the same Medium in Angles of Refraction equal to their Angles of
+Reflexion._
+
+For when Light is reflected by the second Surface of thin Plates, it
+goes out afterwards freely at the first Surface to make the Rings of
+Colours which appear by Reflexion; and, by the freedom of its egress,
+makes the Colours of these Rings more vivid and strong than those which
+appear on the other side of the Plates by the transmitted Light. The
+reflected Rays are therefore in Fits of easy Transmission at their
+egress; which would not always happen, if the Intervals of the Fits
+within the Plate after Reflexion were not equal, both in length and
+number, to their Intervals before it. And this confirms also the
+proportions set down in the former Proposition. For if the Rays both in
+going in and out at the first Surface be in Fits of easy Transmission,
+and the Intervals and Numbers of those Fits between the first and second
+Surface, before and after Reflexion, be equal, the distances of the Fits
+of easy Transmission from either Surface, must be in the same
+progression after Reflexion as before; that is, from the first Surface
+which transmitted them in the progression of the even Numbers 0, 2, 4,
+6, 8, &c. and from the second which reflected them, in that of the odd
+Numbers 1, 3, 5, 7, &c. But these two Propositions will become much more
+evident by the Observations in the following part of this Book.
+
+
+
+
+THE
+
+SECOND BOOK
+
+OF
+
+OPTICKS
+
+
+_PART IV._
+
+_Observations concerning the Reflexions and Colours of thick transparent
+polish'd Plates._
+
+There is no Glass or Speculum how well soever polished, but, besides the
+Light which it refracts or reflects regularly, scatters every way
+irregularly a faint Light, by means of which the polish'd Surface, when
+illuminated in a dark room by a beam of the Sun's Light, may be easily
+seen in all positions of the Eye. There are certain Phænomena of this
+scatter'd Light, which when I first observed them, seem'd very strange
+and surprizing to me. My Observations were as follows.
+
+_Obs._ 1. The Sun shining into my darken'd Chamber through a hole one
+third of an Inch wide, I let the intromitted beam of Light fall
+perpendicularly upon a Glass Speculum ground concave on one side and
+convex on the other, to a Sphere of five Feet and eleven Inches Radius,
+and Quick-silver'd over on the convex side. And holding a white opake
+Chart, or a Quire of Paper at the center of the Spheres to which the
+Speculum was ground, that is, at the distance of about five Feet and
+eleven Inches from the Speculum, in such manner, that the beam of Light
+might pass through a little hole made in the middle of the Chart to the
+Speculum, and thence be reflected back to the same hole: I observed upon
+the Chart four or five concentric Irises or Rings of Colours, like
+Rain-bows, encompassing the hole much after the manner that those, which
+in the fourth and following Observations of the first part of this Book
+appear'd between the Object-glasses, encompassed the black Spot, but yet
+larger and fainter than those. These Rings as they grew larger and
+larger became diluter and fainter, so that the fifth was scarce visible.
+Yet sometimes, when the Sun shone very clear, there appear'd faint
+Lineaments of a sixth and seventh. If the distance of the Chart from the
+Speculum was much greater or much less than that of six Feet, the Rings
+became dilute and vanish'd. And if the distance of the Speculum from the
+Window was much greater than that of six Feet, the reflected beam of
+Light would be so broad at the distance of six Feet from the Speculum
+where the Rings appear'd, as to obscure one or two of the innermost
+Rings. And therefore I usually placed the Speculum at about six Feet
+from the Window; so that its Focus might there fall in with the center
+of its concavity at the Rings upon the Chart. And this Posture is always
+to be understood in the following Observations where no other is
+express'd.
+
+_Obs._ 2. The Colours of these Rain-bows succeeded one another from the
+center outwards, in the same form and order with those which were made
+in the ninth Observation of the first Part of this Book by Light not
+reflected, but transmitted through the two Object-glasses. For, first,
+there was in their common center a white round Spot of faint Light,
+something broader than the reflected beam of Light, which beam sometimes
+fell upon the middle of the Spot, and sometimes by a little inclination
+of the Speculum receded from the middle, and left the Spot white to the
+center.
+
+This white Spot was immediately encompassed with a dark grey or russet,
+and that dark grey with the Colours of the first Iris; which Colours on
+the inside next the dark grey were a little violet and indigo, and next
+to that a blue, which on the outside grew pale, and then succeeded a
+little greenish yellow, and after that a brighter yellow, and then on
+the outward edge of the Iris a red which on the outside inclined to
+purple.
+
+This Iris was immediately encompassed with a second, whose Colours were
+in order from the inside outwards, purple, blue, green, yellow, light
+red, a red mix'd with purple.
+
+Then immediately follow'd the Colours of the third Iris, which were in
+order outwards a green inclining to purple, a good green, and a red more
+bright than that of the former Iris.
+
+The fourth and fifth Iris seem'd of a bluish green within, and red
+without, but so faintly that it was difficult to discern the Colours.
+
+_Obs._ 3. Measuring the Diameters of these Rings upon the Chart as
+accurately as I could, I found them also in the same proportion to one
+another with the Rings made by Light transmitted through the two
+Object-glasses. For the Diameters of the four first of the bright Rings
+measured between the brightest parts of their Orbits, at the distance of
+six Feet from the Speculum were 1-11/16, 2-3/8, 2-11/12, 3-3/8 Inches,
+whose Squares are in arithmetical progression of the numbers 1, 2, 3, 4.
+If the white circular Spot in the middle be reckon'd amongst the Rings,
+and its central Light, where it seems to be most luminous, be put
+equipollent to an infinitely little Ring; the Squares of the Diameters
+of the Rings will be in the progression 0, 1, 2, 3, 4, &c. I measured
+also the Diameters of the dark Circles between these luminous ones, and
+found their Squares in the progression of the numbers 1/2, 1-1/2, 2-1/2,
+3-1/2, &c. the Diameters of the first four at the distance of six Feet
+from the Speculum, being 1-3/16, 2-1/16, 2-2/3, 3-3/20 Inches. If the
+distance of the Chart from the Speculum was increased or diminished, the
+Diameters of the Circles were increased or diminished proportionally.
+
+_Obs._ 4. By the analogy between these Rings and those described in the
+Observations of the first Part of this Book, I suspected that there
+were many more of them which spread into one another, and by interfering
+mix'd their Colours, and diluted one another so that they could not be
+seen apart. I viewed them therefore through a Prism, as I did those in
+the 24th Observation of the first Part of this Book. And when the Prism
+was so placed as by refracting the Light of their mix'd Colours to
+separate them, and distinguish the Rings from one another, as it did
+those in that Observation, I could then see them distincter than before,
+and easily number eight or nine of them, and sometimes twelve or
+thirteen. And had not their Light been so very faint, I question not but
+that I might have seen many more.
+
+_Obs._ 5. Placing a Prism at the Window to refract the intromitted beam
+of Light, and cast the oblong Spectrum of Colours on the Speculum: I
+covered the Speculum with a black Paper which had in the middle of it a
+hole to let any one of the Colours pass through to the Speculum, whilst
+the rest were intercepted by the Paper. And now I found Rings of that
+Colour only which fell upon the Speculum. If the Speculum was
+illuminated with red, the Rings were totally red with dark Intervals, if
+with blue they were totally blue, and so of the other Colours. And when
+they were illuminated with any one Colour, the Squares of their
+Diameters measured between their most luminous Parts, were in the
+arithmetical Progression of the Numbers, 0, 1, 2, 3, 4 and the Squares
+of the Diameters of their dark Intervals in the Progression of the
+intermediate Numbers 1/2, 1-1/2, 2-1/2, 3-1/2. But if the Colour was
+varied, they varied their Magnitude. In the red they were largest, in
+the indigo and violet least, and in the intermediate Colours yellow,
+green, and blue, they were of several intermediate Bignesses answering
+to the Colour, that is, greater in yellow than in green, and greater in
+green than in blue. And hence I knew, that when the Speculum was
+illuminated with white Light, the red and yellow on the outside of the
+Rings were produced by the least refrangible Rays, and the blue and
+violet by the most refrangible, and that the Colours of each Ring spread
+into the Colours of the neighbouring Rings on either side, after the
+manner explain'd in the first and second Part of this Book, and by
+mixing diluted one another so that they could not be distinguish'd,
+unless near the Center where they were least mix'd. For in this
+Observation I could see the Rings more distinctly, and to a greater
+Number than before, being able in the yellow Light to number eight or
+nine of them, besides a faint shadow of a tenth. To satisfy my self how
+much the Colours of the several Rings spread into one another, I
+measured the Diameters of the second and third Rings, and found them
+when made by the Confine of the red and orange to be to the same
+Diameters when made by the Confine of blue and indigo, as 9 to 8, or
+thereabouts. For it was hard to determine this Proportion accurately.
+Also the Circles made successively by the red, yellow, and green,
+differ'd more from one another than those made successively by the
+green, blue, and indigo. For the Circle made by the violet was too dark
+to be seen. To carry on the Computation, let us therefore suppose that
+the Differences of the Diameters of the Circles made by the outmost red,
+the Confine of red and orange, the Confine of orange and yellow, the
+Confine of yellow and green, the Confine of green and blue, the Confine
+of blue and indigo, the Confine of indigo and violet, and outmost
+violet, are in proportion as the Differences of the Lengths of a
+Monochord which sound the Tones in an Eight; _sol_, _la_, _fa_, _sol_,
+_la_, _mi_, _fa_, _sol_, that is, as the Numbers 1/9, 1/18, 1/12, 1/12,
+2/27, 1/27, 1/18. And if the Diameter of the Circle made by the Confine
+of red and orange be 9A, and that of the Circle made by the Confine of
+blue and indigo be 8A as above; their difference 9A-8A will be to the
+difference of the Diameters of the Circles made by the outmost red, and
+by the Confine of red and orange, as 1/18 + 1/12 + 1/12 + 2/27 to 1/9,
+that is as 8/27 to 1/9, or 8 to 3, and to the difference of the Circles
+made by the outmost violet, and by the Confine of blue and indigo, as
+1/18 + 1/12 + 1/12 + 2/27 to 1/27 + 1/18, that is, as 8/27 to 5/54, or
+as 16 to 5. And therefore these differences will be 3/8A and 5/16A. Add
+the first to 9A and subduct the last from 8A, and you will have the
+Diameters of the Circles made by the least and most refrangible Rays
+75/8A and ((61-1/2)/8)A. These diameters are therefore to one another as
+75 to 61-1/2 or 50 to 41, and their Squares as 2500 to 1681, that is, as
+3 to 2 very nearly. Which proportion differs not much from the
+proportion of the Diameters of the Circles made by the outmost red and
+outmost violet, in the 13th Observation of the first part of this Book.
+
+_Obs._ 6. Placing my Eye where these Rings appear'd plainest, I saw the
+Speculum tinged all over with Waves of Colours, (red, yellow, green,
+blue;) like those which in the Observations of the first part of this
+Book appeared between the Object-glasses, and upon Bubbles of Water, but
+much larger. And after the manner of those, they were of various
+magnitudes in various Positions of the Eye, swelling and shrinking as I
+moved my Eye this way and that way. They were formed like Arcs of
+concentrick Circles, as those were; and when my Eye was over against the
+center of the concavity of the Speculum, (that is, 5 Feet and 10 Inches
+distant from the Speculum,) their common center was in a right Line with
+that center of concavity, and with the hole in the Window. But in other
+postures of my Eye their center had other positions. They appear'd by
+the Light of the Clouds propagated to the Speculum through the hole in
+the Window; and when the Sun shone through that hole upon the Speculum,
+his Light upon it was of the Colour of the Ring whereon it fell, but by
+its splendor obscured the Rings made by the Light of the Clouds, unless
+when the Speculum was removed to a great distance from the Window, so
+that his Light upon it might be broad and faint. By varying the position
+of my Eye, and moving it nearer to or farther from the direct beam of
+the Sun's Light, the Colour of the Sun's reflected Light constantly
+varied upon the Speculum, as it did upon my Eye, the same Colour always
+appearing to a Bystander upon my Eye which to me appear'd upon the
+Speculum. And thence I knew that the Rings of Colours upon the Chart
+were made by these reflected Colours, propagated thither from the
+Speculum in several Angles, and that their production depended not upon
+the termination of Light and Shadow.
+
+_Obs._ 7. By the Analogy of all these Phænomena with those of the like
+Rings of Colours described in the first part of this Book, it seemed to
+me that these Colours were produced by this thick Plate of Glass, much
+after the manner that those were produced by very thin Plates. For, upon
+trial, I found that if the Quick-silver were rubb'd off from the
+backside of the Speculum, the Glass alone would cause the same Rings of
+Colours, but much more faint than before; and therefore the Phænomenon
+depends not upon the Quick-silver, unless so far as the Quick-silver by
+increasing the Reflexion of the backside of the Glass increases the
+Light of the Rings of Colours. I found also that a Speculum of Metal
+without Glass made some Years since for optical uses, and very well
+wrought, produced none of those Rings; and thence I understood that
+these Rings arise not from one specular Surface alone, but depend upon
+the two Surfaces of the Plate of Glass whereof the Speculum was made,
+and upon the thickness of the Glass between them. For as in the 7th and
+19th Observations of the first part of this Book a thin Plate of Air,
+Water, or Glass of an even thickness appeared of one Colour when the
+Rays were perpendicular to it, of another when they were a little
+oblique, of another when more oblique, of another when still more
+oblique, and so on; so here, in the sixth Observation, the Light which
+emerged out of the Glass in several Obliquities, made the Glass appear
+of several Colours, and being propagated in those Obliquities to the
+Chart, there painted Rings of those Colours. And as the reason why a
+thin Plate appeared of several Colours in several Obliquities of the
+Rays, was, that the Rays of one and the same sort are reflected by the
+thin Plate at one obliquity and transmitted at another, and those of
+other sorts transmitted where these are reflected, and reflected where
+these are transmitted: So the reason why the thick Plate of Glass
+whereof the Speculum was made did appear of various Colours in various
+Obliquities, and in those Obliquities propagated those Colours to the
+Chart, was, that the Rays of one and the same sort did at one Obliquity
+emerge out of the Glass, at another did not emerge, but were reflected
+back towards the Quick-silver by the hither Surface of the Glass, and
+accordingly as the Obliquity became greater and greater, emerged and
+were reflected alternately for many Successions; and that in one and the
+same Obliquity the Rays of one sort were reflected, and those of another
+transmitted. This is manifest by the fifth Observation of this part of
+this Book. For in that Observation, when the Speculum was illuminated by
+any one of the prismatick Colours, that Light made many Rings of the
+same Colour upon the Chart with dark Intervals, and therefore at its
+emergence out of the Speculum was alternately transmitted and not
+transmitted from the Speculum to the Chart for many Successions,
+according to the various Obliquities of its Emergence. And when the
+Colour cast on the Speculum by the Prism was varied, the Rings became of
+the Colour cast on it, and varied their bigness with their Colour, and
+therefore the Light was now alternately transmitted and not transmitted
+from the Speculum to the Chart at other Obliquities than before. It
+seemed to me therefore that these Rings were of one and the same
+original with those of thin Plates, but yet with this difference, that
+those of thin Plates are made by the alternate Reflexions and
+Transmissions of the Rays at the second Surface of the Plate, after one
+passage through it; but here the Rays go twice through the Plate before
+they are alternately reflected and transmitted. First, they go through
+it from the first Surface to the Quick-silver, and then return through
+it from the Quick-silver to the first Surface, and there are either
+transmitted to the Chart or reflected back to the Quick-silver,
+accordingly as they are in their Fits of easy Reflexion or Transmission
+when they arrive at that Surface. For the Intervals of the Fits of the
+Rays which fall perpendicularly on the Speculum, and are reflected back
+in the same perpendicular Lines, by reason of the equality of these
+Angles and Lines, are of the same length and number within the Glass
+after Reflexion as before, by the 19th Proposition of the third part of
+this Book. And therefore since all the Rays that enter through the
+first Surface are in their Fits of easy Transmission at their entrance,
+and as many of these as are reflected by the second are in their Fits of
+easy Reflexion there, all these must be again in their Fits of easy
+Transmission at their return to the first, and by consequence there go
+out of the Glass to the Chart, and form upon it the white Spot of Light
+in the center of the Rings. For the reason holds good in all sorts of
+Rays, and therefore all sorts must go out promiscuously to that Spot,
+and by their mixture cause it to be white. But the Intervals of the Fits
+of those Rays which are reflected more obliquely than they enter, must
+be greater after Reflexion than before, by the 15th and 20th
+Propositions. And thence it may happen that the Rays at their return to
+the first Surface, may in certain Obliquities be in Fits of easy
+Reflexion, and return back to the Quick-silver, and in other
+intermediate Obliquities be again in Fits of easy Transmission, and so
+go out to the Chart, and paint on it the Rings of Colours about the
+white Spot. And because the Intervals of the Fits at equal obliquities
+are greater and fewer in the less refrangible Rays, and less and more
+numerous in the more refrangible, therefore the less refrangible at
+equal obliquities shall make fewer Rings than the more refrangible, and
+the Rings made by those shall be larger than the like number of Rings
+made by these; that is, the red Rings shall be larger than the yellow,
+the yellow than the green, the green than the blue, and the blue than
+the violet, as they were really found to be in the fifth Observation.
+And therefore the first Ring of all Colours encompassing the white Spot
+of Light shall be red without any violet within, and yellow, and green,
+and blue in the middle, as it was found in the second Observation; and
+these Colours in the second Ring, and those that follow, shall be more
+expanded, till they spread into one another, and blend one another by
+interfering.
+
+These seem to be the reasons of these Rings in general; and this put me
+upon observing the thickness of the Glass, and considering whether the
+dimensions and proportions of the Rings may be truly derived from it by
+computation.
+
+_Obs._ 8. I measured therefore the thickness of this concavo-convex
+Plate of Glass, and found it every where 1/4 of an Inch precisely. Now,
+by the sixth Observation of the first Part of this Book, a thin Plate of
+Air transmits the brightest Light of the first Ring, that is, the bright
+yellow, when its thickness is the 1/89000th part of an Inch; and by the
+tenth Observation of the same Part, a thin Plate of Glass transmits the
+same Light of the same Ring, when its thickness is less in proportion of
+the Sine of Refraction to the Sine of Incidence, that is, when its
+thickness is the 11/1513000th or 1/137545th part of an Inch, supposing
+the Sines are as 11 to 17. And if this thickness be doubled, it
+transmits the same bright Light of the second Ring; if tripled, it
+transmits that of the third, and so on; the bright yellow Light in all
+these cases being in its Fits of Transmission. And therefore if its
+thickness be multiplied 34386 times, so as to become 1/4 of an Inch, it
+transmits the same bright Light of the 34386th Ring. Suppose this be the
+bright yellow Light transmitted perpendicularly from the reflecting
+convex side of the Glass through the concave side to the white Spot in
+the center of the Rings of Colours on the Chart: And by a Rule in the
+7th and 19th Observations in the first Part of this Book, and by the
+15th and 20th Propositions of the third Part of this Book, if the Rays
+be made oblique to the Glass, the thickness of the Glass requisite to
+transmit the same bright Light of the same Ring in any obliquity, is to
+this thickness of 1/4 of an Inch, as the Secant of a certain Angle to
+the Radius, the Sine of which Angle is the first of an hundred and six
+arithmetical Means between the Sines of Incidence and Refraction,
+counted from the Sine of Incidence when the Refraction is made out of
+any plated Body into any Medium encompassing it; that is, in this case,
+out of Glass into Air. Now if the thickness of the Glass be increased by
+degrees, so as to bear to its first thickness, (_viz._ that of a quarter
+of an Inch,) the Proportions which 34386 (the number of Fits of the
+perpendicular Rays in going through the Glass towards the white Spot in
+the center of the Rings,) hath to 34385, 34384, 34383, and 34382, (the
+numbers of the Fits of the oblique Rays in going through the Glass
+towards the first, second, third, and fourth Rings of Colours,) and if
+the first thickness be divided into 100000000 equal parts, the increased
+thicknesses will be 100002908, 100005816, 100008725, and 100011633, and
+the Angles of which these thicknesses are Secants will be 26´ 13´´, 37´
+5´´, 45´ 6´´, and 52´ 26´´, the Radius being 100000000; and the Sines of
+these Angles are 762, 1079, 1321, and 1525, and the proportional Sines
+of Refraction 1172, 1659, 2031, and 2345, the Radius being 100000. For
+since the Sines of Incidence out of Glass into Air are to the Sines of
+Refraction as 11 to 17, and to the above-mentioned Secants as 11 to the
+first of 106 arithmetical Means between 11 and 17, that is, as 11 to
+11-6/106, those Secants will be to the Sines of Refraction as 11-6/106,
+to 17, and by this Analogy will give these Sines. So then, if the
+obliquities of the Rays to the concave Surface of the Glass be such that
+the Sines of their Refraction in passing out of the Glass through that
+Surface into the Air be 1172, 1659, 2031, 2345, the bright Light of the
+34386th Ring shall emerge at the thicknesses of the Glass, which are to
+1/4 of an Inch as 34386 to 34385, 34384, 34383, 34382, respectively. And
+therefore, if the thickness in all these Cases be 1/4 of an Inch (as it
+is in the Glass of which the Speculum was made) the bright Light of the
+34385th Ring shall emerge where the Sine of Refraction is 1172, and that
+of the 34384th, 34383th, and 34382th Ring where the Sine is 1659, 2031,
+and 2345 respectively. And in these Angles of Refraction the Light of
+these Rings shall be propagated from the Speculum to the Chart, and
+there paint Rings about the white central round Spot of Light which we
+said was the Light of the 34386th Ring. And the Semidiameters of these
+Rings shall subtend the Angles of Refraction made at the
+Concave-Surface of the Speculum, and by consequence their Diameters
+shall be to the distance of the Chart from the Speculum as those Sines
+of Refraction doubled are to the Radius, that is, as 1172, 1659, 2031,
+and 2345, doubled are to 100000. And therefore, if the distance of the
+Chart from the Concave-Surface of the Speculum be six Feet (as it was in
+the third of these Observations) the Diameters of the Rings of this
+bright yellow Light upon the Chart shall be 1'688, 2'389, 2'925, 3'375
+Inches: For these Diameters are to six Feet, as the above-mention'd
+Sines doubled are to the Radius. Now, these Diameters of the bright
+yellow Rings, thus found by Computation are the very same with those
+found in the third of these Observations by measuring them, _viz._ with
+1-11/16, 2-3/8, 2-11/12, and 3-3/8 Inches, and therefore the Theory of
+deriving these Rings from the thickness of the Plate of Glass of which
+the Speculum was made, and from the Obliquity of the emerging Rays
+agrees with the Observation. In this Computation I have equalled the
+Diameters of the bright Rings made by Light of all Colours, to the
+Diameters of the Rings made by the bright yellow. For this yellow makes
+the brightest Part of the Rings of all Colours. If you desire the
+Diameters of the Rings made by the Light of any other unmix'd Colour,
+you may find them readily by putting them to the Diameters of the bright
+yellow ones in a subduplicate Proportion of the Intervals of the Fits of
+the Rays of those Colours when equally inclined to the refracting or
+reflecting Surface which caused those Fits, that is, by putting the
+Diameters of the Rings made by the Rays in the Extremities and Limits of
+the seven Colours, red, orange, yellow, green, blue, indigo, violet,
+proportional to the Cube-roots of the Numbers, 1, 8/9, 5/6, 3/4, 2/3,
+3/5, 9/16, 1/2, which express the Lengths of a Monochord sounding the
+Notes in an Eighth: For by this means the Diameters of the Rings of
+these Colours will be found pretty nearly in the same Proportion to one
+another, which they ought to have by the fifth of these Observations.
+
+And thus I satisfy'd my self, that these Rings were of the same kind and
+Original with those of thin Plates, and by consequence that the Fits or
+alternate Dispositions of the Rays to be reflected and transmitted are
+propagated to great distances from every reflecting and refracting
+Surface. But yet to put the matter out of doubt, I added the following
+Observation.
+
+_Obs._ 9. If these Rings thus depend on the thickness of the Plate of
+Glass, their Diameters at equal distances from several Speculums made of
+such concavo-convex Plates of Glass as are ground on the same Sphere,
+ought to be reciprocally in a subduplicate Proportion of the thicknesses
+of the Plates of Glass. And if this Proportion be found true by
+experience it will amount to a demonstration that these Rings (like
+those formed in thin Plates) do depend on the thickness of the Glass. I
+procured therefore another concavo-convex Plate of Glass ground on both
+sides to the same Sphere with the former Plate. Its thickness was 5/62
+Parts of an Inch; and the Diameters of the three first bright Rings
+measured between the brightest Parts of their Orbits at the distance of
+six Feet from the Glass were 3·4-1/6·5-1/8· Inches. Now, the thickness
+of the other Glass being 1/4 of an Inch was to the thickness of this
+Glass as 1/4 to 5/62, that is as 31 to 10, or 310000000 to 100000000,
+and the Roots of these Numbers are 17607 and 10000, and in the
+Proportion of the first of these Roots to the second are the Diameters
+of the bright Rings made in this Observation by the thinner Glass,
+3·4-1/6·5-1/8, to the Diameters of the same Rings made in the third of
+these Observations by the thicker Glass 1-11/16, 2-3/8. 2-11/12, that
+is, the Diameters of the Rings are reciprocally in a subduplicate
+Proportion of the thicknesses of the Plates of Glass.
+
+So then in Plates of Glass which are alike concave on one side, and
+alike convex on the other side, and alike quick-silver'd on the convex
+sides, and differ in nothing but their thickness, the Diameters of the
+Rings are reciprocally in a subduplicate Proportion of the thicknesses
+of the Plates. And this shews sufficiently that the Rings depend on both
+the Surfaces of the Glass. They depend on the convex Surface, because
+they are more luminous when that Surface is quick-silver'd over than
+when it is without Quick-silver. They depend also upon the concave
+Surface, because without that Surface a Speculum makes them not. They
+depend on both Surfaces, and on the distances between them, because
+their bigness is varied by varying only that distance. And this
+dependence is of the same kind with that which the Colours of thin
+Plates have on the distance of the Surfaces of those Plates, because the
+bigness of the Rings, and their Proportion to one another, and the
+variation of their bigness arising from the variation of the thickness
+of the Glass, and the Orders of their Colours, is such as ought to
+result from the Propositions in the end of the third Part of this Book,
+derived from the Phænomena of the Colours of thin Plates set down in the
+first Part.
+
+There are yet other Phænomena of these Rings of Colours, but such as
+follow from the same Propositions, and therefore confirm both the Truth
+of those Propositions, and the Analogy between these Rings and the Rings
+of Colours made by very thin Plates. I shall subjoin some of them.
+
+_Obs._ 10. When the beam of the Sun's Light was reflected back from the
+Speculum not directly to the hole in the Window, but to a place a little
+distant from it, the common center of that Spot, and of all the Rings of
+Colours fell in the middle way between the beam of the incident Light,
+and the beam of the reflected Light, and by consequence in the center of
+the spherical concavity of the Speculum, whenever the Chart on which the
+Rings of Colours fell was placed at that center. And as the beam of
+reflected Light by inclining the Speculum receded more and more from the
+beam of incident Light and from the common center of the colour'd Rings
+between them, those Rings grew bigger and bigger, and so also did the
+white round Spot, and new Rings of Colours emerged successively out of
+their common center, and the white Spot became a white Ring
+encompassing them; and the incident and reflected beams of Light always
+fell upon the opposite parts of this white Ring, illuminating its
+Perimeter like two mock Suns in the opposite parts of an Iris. So then
+the Diameter of this Ring, measured from the middle of its Light on one
+side to the middle of its Light on the other side, was always equal to
+the distance between the middle of the incident beam of Light, and the
+middle of the reflected beam measured at the Chart on which the Rings
+appeared: And the Rays which form'd this Ring were reflected by the
+Speculum in Angles equal to their Angles of Incidence, and by
+consequence to their Angles of Refraction at their entrance into the
+Glass, but yet their Angles of Reflexion were not in the same Planes
+with their Angles of Incidence.
+
+_Obs._ 11. The Colours of the new Rings were in a contrary order to
+those of the former, and arose after this manner. The white round Spot
+of Light in the middle of the Rings continued white to the center till
+the distance of the incident and reflected beams at the Chart was about
+7/8 parts of an Inch, and then it began to grow dark in the middle. And
+when that distance was about 1-3/16 of an Inch, the white Spot was
+become a Ring encompassing a dark round Spot which in the middle
+inclined to violet and indigo. And the luminous Rings encompassing it
+were grown equal to those dark ones which in the four first Observations
+encompassed them, that is to say, the white Spot was grown a white Ring
+equal to the first of those dark Rings, and the first of those luminous
+Rings was now grown equal to the second of those dark ones, and the
+second of those luminous ones to the third of those dark ones, and so
+on. For the Diameters of the luminous Rings were now 1-3/16, 2-1/16,
+2-2/3, 3-3/20, &c. Inches.
+
+When the distance between the incident and reflected beams of Light
+became a little bigger, there emerged out of the middle of the dark Spot
+after the indigo a blue, and then out of that blue a pale green, and
+soon after a yellow and red. And when the Colour at the center was
+brightest, being between yellow and red, the bright Rings were grown
+equal to those Rings which in the four first Observations next
+encompassed them; that is to say, the white Spot in the middle of those
+Rings was now become a white Ring equal to the first of those bright
+Rings, and the first of those bright ones was now become equal to the
+second of those, and so on. For the Diameters of the white Ring, and of
+the other luminous Rings encompassing it, were now 1-11/16, 2-3/8,
+2-11/12, 3-3/8, &c. or thereabouts.
+
+When the distance of the two beams of Light at the Chart was a little
+more increased, there emerged out of the middle in order after the red,
+a purple, a blue, a green, a yellow, and a red inclining much to purple,
+and when the Colour was brightest being between yellow and red, the
+former indigo, blue, green, yellow and red, were become an Iris or Ring
+of Colours equal to the first of those luminous Rings which appeared in
+the four first Observations, and the white Ring which was now become
+the second of the luminous Rings was grown equal to the second of those,
+and the first of those which was now become the third Ring was become
+equal to the third of those, and so on. For their Diameters were
+1-11/16, 2-3/8, 2-11/12, 3-3/8 Inches, the distance of the two beams of
+Light, and the Diameter of the white Ring being 2-3/8 Inches.
+
+When these two beams became more distant there emerged out of the middle
+of the purplish red, first a darker round Spot, and then out of the
+middle of that Spot a brighter. And now the former Colours (purple,
+blue, green, yellow, and purplish red) were become a Ring equal to the
+first of the bright Rings mentioned in the four first Observations, and
+the Rings about this Ring were grown equal to the Rings about that
+respectively; the distance between the two beams of Light and the
+Diameter of the white Ring (which was now become the third Ring) being
+about 3 Inches.
+
+The Colours of the Rings in the middle began now to grow very dilute,
+and if the distance between the two Beams was increased half an Inch, or
+an Inch more, they vanish'd whilst the white Ring, with one or two of
+the Rings next it on either side, continued still visible. But if the
+distance of the two beams of Light was still more increased, these also
+vanished: For the Light which coming from several parts of the hole in
+the Window fell upon the Speculum in several Angles of Incidence, made
+Rings of several bignesses, which diluted and blotted out one another,
+as I knew by intercepting some part of that Light. For if I intercepted
+that part which was nearest to the Axis of the Speculum the Rings would
+be less, if the other part which was remotest from it they would be
+bigger.
+
+_Obs._ 12. When the Colours of the Prism were cast successively on the
+Speculum, that Ring which in the two last Observations was white, was of
+the same bigness in all the Colours, but the Rings without it were
+greater in the green than in the blue, and still greater in the yellow,
+and greatest in the red. And, on the contrary, the Rings within that
+white Circle were less in the green than in the blue, and still less in
+the yellow, and least in the red. For the Angles of Reflexion of those
+Rays which made this Ring, being equal to their Angles of Incidence, the
+Fits of every reflected Ray within the Glass after Reflexion are equal
+in length and number to the Fits of the same Ray within the Glass before
+its Incidence on the reflecting Surface. And therefore since all the
+Rays of all sorts at their entrance into the Glass were in a Fit of
+Transmission, they were also in a Fit of Transmission at their returning
+to the same Surface after Reflexion; and by consequence were
+transmitted, and went out to the white Ring on the Chart. This is the
+reason why that Ring was of the same bigness in all the Colours, and why
+in a mixture of all it appears white. But in Rays which are reflected in
+other Angles, the Intervals of the Fits of the least refrangible being
+greatest, make the Rings of their Colour in their progress from this
+white Ring, either outwards or inwards, increase or decrease by the
+greatest steps; so that the Rings of this Colour without are greatest,
+and within least. And this is the reason why in the last Observation,
+when the Speculum was illuminated with white Light, the exterior Rings
+made by all Colours appeared red without and blue within, and the
+interior blue without and red within.
+
+These are the Phænomena of thick convexo-concave Plates of Glass, which
+are every where of the same thickness. There are yet other Phænomena
+when these Plates are a little thicker on one side than on the other,
+and others when the Plates are more or less concave than convex, or
+plano-convex, or double-convex. For in all these cases the Plates make
+Rings of Colours, but after various manners; all which, so far as I have
+yet observed, follow from the Propositions in the end of the third part
+of this Book, and so conspire to confirm the truth of those
+Propositions. But the Phænomena are too various, and the Calculations
+whereby they follow from those Propositions too intricate to be here
+prosecuted. I content my self with having prosecuted this kind of
+Phænomena so far as to discover their Cause, and by discovering it to
+ratify the Propositions in the third Part of this Book.
+
+_Obs._ 13. As Light reflected by a Lens quick-silver'd on the backside
+makes the Rings of Colours above described, so it ought to make the like
+Rings of Colours in passing through a drop of Water. At the first
+Reflexion of the Rays within the drop, some Colours ought to be
+transmitted, as in the case of a Lens, and others to be reflected back
+to the Eye. For instance, if the Diameter of a small drop or globule of
+Water be about the 500th part of an Inch, so that a red-making Ray in
+passing through the middle of this globule has 250 Fits of easy
+Transmission within the globule, and that all the red-making Rays which
+are at a certain distance from this middle Ray round about it have 249
+Fits within the globule, and all the like Rays at a certain farther
+distance round about it have 248 Fits, and all those at a certain
+farther distance 247 Fits, and so on; these concentrick Circles of Rays
+after their transmission, falling on a white Paper, will make
+concentrick Rings of red upon the Paper, supposing the Light which
+passes through one single globule, strong enough to be sensible. And, in
+like manner, the Rays of other Colours will make Rings of other Colours.
+Suppose now that in a fair Day the Sun shines through a thin Cloud of
+such globules of Water or Hail, and that the globules are all of the
+same bigness; and the Sun seen through this Cloud shall appear
+encompassed with the like concentrick Rings of Colours, and the Diameter
+of the first Ring of red shall be 7-1/4 Degrees, that of the second
+10-1/4 Degrees, that of the third 12 Degrees 33 Minutes. And accordingly
+as the Globules of Water are bigger or less, the Rings shall be less or
+bigger. This is the Theory, and Experience answers it. For in _June_
+1692, I saw by reflexion in a Vessel of stagnating Water three Halos,
+Crowns, or Rings of Colours about the Sun, like three little Rain-bows,
+concentrick to his Body. The Colours of the first or innermost Crown
+were blue next the Sun, red without, and white in the middle between the
+blue and red. Those of the second Crown were purple and blue within, and
+pale red without, and green in the middle. And those of the third were
+pale blue within, and pale red without; these Crowns enclosed one
+another immediately, so that their Colours proceeded in this continual
+order from the Sun outward: blue, white, red; purple, blue, green, pale
+yellow and red; pale blue, pale red. The Diameter of the second Crown
+measured from the middle of the yellow and red on one side of the Sun,
+to the middle of the same Colour on the other side was 9-1/3 Degrees, or
+thereabouts. The Diameters of the first and third I had not time to
+measure, but that of the first seemed to be about five or six Degrees,
+and that of the third about twelve. The like Crowns appear sometimes
+about the Moon; for in the beginning of the Year 1664, _Febr._ 19th at
+Night, I saw two such Crowns about her. The Diameter of the first or
+innermost was about three Degrees, and that of the second about five
+Degrees and an half. Next about the Moon was a Circle of white, and next
+about that the inner Crown, which was of a bluish green within next the
+white, and of a yellow and red without, and next about these Colours
+were blue and green on the inside of the outward Crown, and red on the
+outside of it. At the same time there appear'd a Halo about 22 Degrees
+35´ distant from the center of the Moon. It was elliptical, and its long
+Diameter was perpendicular to the Horizon, verging below farthest from
+the Moon. I am told that the Moon has sometimes three or more
+concentrick Crowns of Colours encompassing one another next about her
+Body. The more equal the globules of Water or Ice are to one another,
+the more Crowns of Colours will appear, and the Colours will be the more
+lively. The Halo at the distance of 22-1/2 Degrees from the Moon is of
+another sort. By its being oval and remoter from the Moon below than
+above, I conclude, that it was made by Refraction in some sort of Hail
+or Snow floating in the Air in an horizontal posture, the refracting
+Angle being about 58 or 60 Degrees.
+
+
+
+
+THE
+
+THIRD BOOK
+
+OF
+
+OPTICKS
+
+
+_PART I._
+
+_Observations concerning the Inflexions of the Rays of Light, and the
+Colours made thereby._
+
+Grimaldo has inform'd us, that if a beam of the Sun's Light be let into
+a dark Room through a very small hole, the Shadows of things in this
+Light will be larger than they ought to be if the Rays went on by the
+Bodies in straight Lines, and that these Shadows have three parallel
+Fringes, Bands or Ranks of colour'd Light adjacent to them. But if the
+Hole be enlarged the Fringes grow broad and run into one another, so
+that they cannot be distinguish'd. These broad Shadows and Fringes have
+been reckon'd by some to proceed from the ordinary refraction of the
+Air, but without due examination of the Matter. For the circumstances of
+the Phænomenon, so far as I have observed them, are as follows.
+
+_Obs._ 1. I made in a piece of Lead a small Hole with a Pin, whose
+breadth was the 42d part of an Inch. For 21 of those Pins laid together
+took up the breadth of half an Inch. Through this Hole I let into my
+darken'd Chamber a beam of the Sun's Light, and found that the Shadows
+of Hairs, Thred, Pins, Straws, and such like slender Substances placed
+in this beam of Light, were considerably broader than they ought to be,
+if the Rays of Light passed on by these Bodies in right Lines. And
+particularly a Hair of a Man's Head, whose breadth was but the 280th
+part of an Inch, being held in this Light, at the distance of about
+twelve Feet from the Hole, did cast a Shadow which at the distance of
+four Inches from the Hair was the sixtieth part of an Inch broad, that
+is, above four times broader than the Hair, and at the distance of two
+Feet from the Hair was about the eight and twentieth part of an Inch
+broad, that is, ten times broader than the Hair, and at the distance of
+ten Feet was the eighth part of an Inch broad, that is 35 times broader.
+
+Nor is it material whether the Hair be encompassed with Air, or with any
+other pellucid Substance. For I wetted a polish'd Plate of Glass, and
+laid the Hair in the Water upon the Glass, and then laying another
+polish'd Plate of Glass upon it, so that the Water might fill up the
+space between the Glasses, I held them in the aforesaid beam of Light,
+so that the Light might pass through them perpendicularly, and the
+Shadow of the Hair was at the same distances as big as before. The
+Shadows of Scratches made in polish'd Plates of Glass were also much
+broader than they ought to be, and the Veins in polish'd Plates of Glass
+did also cast the like broad Shadows. And therefore the great breadth of
+these Shadows proceeds from some other cause than the Refraction of the
+Air.
+
+Let the Circle X [in _Fig._ 1.] represent the middle of the Hair; ADG,
+BEH, CFI, three Rays passing by one side of the Hair at several
+distances; KNQ, LOR, MPS, three other Rays passing by the other side of
+the Hair at the like distances; D, E, F, and N, O, P, the places where
+the Rays are bent in their passage by the Hair; G, H, I, and Q, R, S,
+the places where the Rays fall on a Paper GQ; IS the breadth of the
+Shadow of the Hair cast on the Paper, and TI, VS, two Rays passing to
+the Points I and S without bending when the Hair is taken away. And it's
+manifest that all the Light between these two Rays TI and VS is bent in
+passing by the Hair, and turned aside from the Shadow IS, because if any
+part of this Light were not bent it would fall on the Paper within the
+Shadow, and there illuminate the Paper, contrary to experience. And
+because when the Paper is at a great distance from the Hair, the Shadow
+is broad, and therefore the Rays TI and VS are at a great distance from
+one another, it follows that the Hair acts upon the Rays of Light at a
+good distance in their passing by it. But the Action is strongest on the
+Rays which pass by at least distances, and grows weaker and weaker
+accordingly as the Rays pass by at distances greater and greater, as is
+represented in the Scheme: For thence it comes to pass, that the Shadow
+of the Hair is much broader in proportion to the distance of the Paper
+from the Hair, when the Paper is nearer the Hair, than when it is at a
+great distance from it.
+
+_Obs._ 2. The Shadows of all Bodies (Metals, Stones, Glass, Wood, Horn,
+Ice, &c.) in this Light were border'd with three Parallel Fringes or
+Bands of colour'd Light, whereof that which was contiguous to the Shadow
+was broadest and most luminous, and that which was remotest from it was
+narrowest, and so faint, as not easily to be visible. It was difficult
+to distinguish the Colours, unless when the Light fell very obliquely
+upon a smooth Paper, or some other smooth white Body, so as to make them
+appear much broader than they would otherwise do. And then the Colours
+were plainly visible in this Order: The first or innermost Fringe was
+violet and deep blue next the Shadow, and then light blue, green, and
+yellow in the middle, and red without. The second Fringe was almost
+contiguous to the first, and the third to the second, and both were blue
+within, and yellow and red without, but their Colours were very faint,
+especially those of the third. The Colours therefore proceeded in this
+order from the Shadow; violet, indigo, pale blue, green, yellow, red;
+blue, yellow, red; pale blue, pale yellow and red. The Shadows made by
+Scratches and Bubbles in polish'd Plates of Glass were border'd with the
+like Fringes of colour'd Light. And if Plates of Looking-glass sloop'd
+off near the edges with a Diamond-cut, be held in the same beam of
+Light, the Light which passes through the parallel Planes of the Glass
+will be border'd with the like Fringes of Colours where those Planes
+meet with the Diamond-cut, and by this means there will sometimes appear
+four or five Fringes of Colours. Let AB, CD [in _Fig._ 2.] represent the
+parallel Planes of a Looking-glass, and BD the Plane of the Diamond-cut,
+making at B a very obtuse Angle with the Plane AB. And let all the Light
+between the Rays ENI and FBM pass directly through the parallel Planes
+of the Glass, and fall upon the Paper between I and M, and all the Light
+between the Rays GO and HD be refracted by the oblique Plane of the
+Diamond-cut BD, and fall upon the Paper between K and L; and the Light
+which passes directly through the parallel Planes of the Glass, and
+falls upon the Paper between I and M, will be border'd with three or
+more Fringes at M.
+
+[Illustration: FIG. 1.]
+
+[Illustration: FIG. 2.]
+
+So by looking on the Sun through a Feather or black Ribband held close
+to the Eye, several Rain-bows will appear; the Shadows which the Fibres
+or Threds cast on the _Tunica Retina_, being border'd with the like
+Fringes of Colours.
+
+_Obs._ 3. When the Hair was twelve Feet distant from this Hole, and its
+Shadow fell obliquely upon a flat white Scale of Inches and Parts of an
+Inch placed half a Foot beyond it, and also when the Shadow fell
+perpendicularly upon the same Scale placed nine Feet beyond it; I
+measured the breadth of the Shadow and Fringes as accurately as I could,
+and found them in Parts of an Inch as follows.
+
+-------------------------------------------+-----------+--------
+                                           |  half a   | Nine
+                      At the Distance of   |   Foot    |  Feet
+-------------------------------------------+-----------+--------
+The breadth of the Shadow                  |   1/54    |  1/9
+-------------------------------------------+-----------+--------
+The breadth between the Middles of the     |   1/38    |
+  brightest Light of the innermost Fringes |    or     |
+  on either side the Shadow                |   1/39    |  7/50
+-------------------------------------------+-----------+--------
+The breadth between the Middles of the     |           |
+  brightest Light of the middlemost Fringes|           |
+  on either side the Shadow                | 1/23-1/2  |  4/17
+-------------------------------------------+-----------+--------
+The breadth between the Middles of the     |  1/18     |
+  brightest Light of the outmost Fringes   |   or      |
+  on either side the Shadow                | 1/18-1/2  |  3/10
+-------------------------------------------+-----------+--------
+The distance between the Middles of the    |           |
+  brightest Light of the first and second  |           |
+  Fringes                                  |  1/120    |  1/21
+-------------------------------------------+-----------+--------
+The distance between the Middles of the    |           |
+  brightest Light of the second and third  |           |
+  Fringes                                  |  1/170    |  1/31
+-------------------------------------------+-----------+--------
+The breadth of the luminous Part (green,   |           |
+  white, yellow, and red) of the first     |           |
+  Fringe                                   |  1/170    |  1/32
+-------------------------------------------+-----------+--------
+The breadth of the darker Space between    |           |
+  the first and second Fringes             |  1/240    |  1/45
+-------------------------------------------+-----------+--------
+The breadth of the luminous Part of the    |           |
+  second Fringe                            |  1/290    |  1/55
+-------------------------------------------+-----------+--------
+The breadth of the darker Space between    |           |
+  the second and third Fringes             |  1/340    |  1/63
+-------------------------------------------+-----------+--------
+
+These Measures I took by letting the Shadow of the Hair, at half a Foot
+distance, fall so obliquely on the Scale, as to appear twelve times
+broader than when it fell perpendicularly on it at the same distance,
+and setting down in this Table the twelfth part of the Measures I then
+took.
+
+_Obs._ 4. When the Shadow and Fringes were cast obliquely upon a smooth
+white Body, and that Body was removed farther and farther from the Hair,
+the first Fringe began to appear and look brighter than the rest of the
+Light at the distance of less than a quarter of an Inch from the Hair,
+and the dark Line or Shadow between that and the second Fringe began to
+appear at a less distance from the Hair than that of the third part of
+an Inch. The second Fringe began to appear at a distance from the Hair
+of less than half an Inch, and the Shadow between that and the third
+Fringe at a distance less than an inch, and the third Fringe at a
+distance less than three Inches. At greater distances they became much
+more sensible, but kept very nearly the same proportion of their
+breadths and intervals which they had at their first appearing. For the
+distance between the middle of the first, and middle of the second
+Fringe, was to the distance between the middle of the second and middle
+of the third Fringe, as three to two, or ten to seven. And the last of
+these two distances was equal to the breadth of the bright Light or
+luminous part of the first Fringe. And this breadth was to the breadth
+of the bright Light of the second Fringe as seven to four, and to the
+dark Interval of the first and second Fringe as three to two, and to
+the like dark Interval between the second and third as two to one. For
+the breadths of the Fringes seem'd to be in the progression of the
+Numbers 1, sqrt(1/3), sqrt(1/5), and their Intervals to be in the
+same progression with them; that is, the Fringes and their Intervals
+together to be in the continual progression of the Numbers 1,
+sqrt(1/2), sqrt(1/3), sqrt(1/4), sqrt(1/5), or thereabouts. And
+these Proportions held the same very nearly at all distances from the
+Hair; the dark Intervals of the Fringes being as broad in proportion to
+the breadth of the Fringes at their first appearance as afterwards at
+great distances from the Hair, though not so dark and distinct.
+
+_Obs._ 5. The Sun shining into my darken'd Chamber through a hole a
+quarter of an Inch broad, I placed at the distance of two or three Feet
+from the Hole a Sheet of Pasteboard, which was black'd all over on both
+sides, and in the middle of it had a hole about three quarters of an
+Inch square for the Light to pass through. And behind the hole I
+fasten'd to the Pasteboard with Pitch the blade of a sharp Knife, to
+intercept some part of the Light which passed through the hole. The
+Planes of the Pasteboard and blade of the Knife were parallel to one
+another, and perpendicular to the Rays. And when they were so placed
+that none of the Sun's Light fell on the Pasteboard, but all of it
+passed through the hole to the Knife, and there part of it fell upon the
+blade of the Knife, and part of it passed by its edge; I let this part
+of the Light which passed by, fall on a white Paper two or three Feet
+beyond the Knife, and there saw two streams of faint Light shoot out
+both ways from the beam of Light into the shadow, like the Tails of
+Comets. But because the Sun's direct Light by its brightness upon the
+Paper obscured these faint streams, so that I could scarce see them, I
+made a little hole in the midst of the Paper for that Light to pass
+through and fall on a black Cloth behind it; and then I saw the two
+streams plainly. They were like one another, and pretty nearly equal in
+length, and breadth, and quantity of Light. Their Light at that end next
+the Sun's direct Light was pretty strong for the space of about a
+quarter of an Inch, or half an Inch, and in all its progress from that
+direct Light decreased gradually till it became insensible. The whole
+length of either of these streams measured upon the paper at the
+distance of three Feet from the Knife was about six or eight Inches; so
+that it subtended an Angle at the edge of the Knife of about 10 or 12,
+or at most 14 Degrees. Yet sometimes I thought I saw it shoot three or
+four Degrees farther, but with a Light so very faint that I could scarce
+perceive it, and suspected it might (in some measure at least) arise
+from some other cause than the two streams did. For placing my Eye in
+that Light beyond the end of that stream which was behind the Knife, and
+looking towards the Knife, I could see a line of Light upon its edge,
+and that not only when my Eye was in the line of the Streams, but also
+when it was without that line either towards the point of the Knife, or
+towards the handle. This line of Light appear'd contiguous to the edge
+of the Knife, and was narrower than the Light of the innermost Fringe,
+and narrowest when my Eye was farthest from the direct Light, and
+therefore seem'd to pass between the Light of that Fringe and the edge
+of the Knife, and that which passed nearest the edge to be most bent,
+though not all of it.
+
+_Obs._ 6. I placed another Knife by this, so that their edges might be
+parallel, and look towards one another, and that the beam of Light might
+fall upon both the Knives, and some part of it pass between their edges.
+And when the distance of their edges was about the 400th part of an
+Inch, the stream parted in the middle, and left a Shadow between the two
+parts. This Shadow was so black and dark that all the Light which passed
+between the Knives seem'd to be bent, and turn'd aside to the one hand
+or to the other. And as the Knives still approach'd one another the
+Shadow grew broader, and the streams shorter at their inward ends which
+were next the Shadow, until upon the contact of the Knives the whole
+Light vanish'd, leaving its place to the Shadow.
+
+And hence I gather that the Light which is least bent, and goes to the
+inward ends of the streams, passes by the edges of the Knives at the
+greatest distance, and this distance when the Shadow begins to appear
+between the streams, is about the 800th part of an Inch. And the Light
+which passes by the edges of the Knives at distances still less and
+less, is more and more bent, and goes to those parts of the streams
+which are farther and farther from the direct Light; because when the
+Knives approach one another till they touch, those parts of the streams
+vanish last which are farthest from the direct Light.
+
+_Obs._ 7. In the fifth Observation the Fringes did not appear, but by
+reason of the breadth of the hole in the Window became so broad as to
+run into one another, and by joining, to make one continued Light in the
+beginning of the streams. But in the sixth, as the Knives approached one
+another, a little before the Shadow appeared between the two streams,
+the Fringes began to appear on the inner ends of the Streams on either
+side of the direct Light; three on one side made by the edge of one
+Knife, and three on the other side made by the edge of the other Knife.
+They were distinctest when the Knives were placed at the greatest
+distance from the hole in the Window, and still became more distinct by
+making the hole less, insomuch that I could sometimes see a faint
+lineament of a fourth Fringe beyond the three above mention'd. And as
+the Knives continually approach'd one another, the Fringes grew
+distincter and larger, until they vanish'd. The outmost Fringe vanish'd
+first, and the middlemost next, and the innermost last. And after they
+were all vanish'd, and the line of Light which was in the middle between
+them was grown very broad, enlarging it self on both sides into the
+streams of Light described in the fifth Observation, the above-mention'd
+Shadow began to appear in the middle of this line, and divide it along
+the middle into two lines of Light, and increased until the whole Light
+vanish'd. This enlargement of the Fringes was so great that the Rays
+which go to the innermost Fringe seem'd to be bent above twenty times
+more when this Fringe was ready to vanish, than when one of the Knives
+was taken away.
+
+And from this and the former Observation compared, I gather, that the
+Light of the first Fringe passed by the edge of the Knife at a distance
+greater than the 800th part of an Inch, and the Light of the second
+Fringe passed by the edge of the Knife at a greater distance than the
+Light of the first Fringe did, and that of the third at a greater
+distance than that of the second, and that of the streams of Light
+described in the fifth and sixth Observations passed by the edges of the
+Knives at less distances than that of any of the Fringes.
+
+_Obs._ 8. I caused the edges of two Knives to be ground truly strait,
+and pricking their points into a Board so that their edges might look
+towards one another, and meeting near their points contain a rectilinear
+Angle, I fasten'd their Handles together with Pitch to make this Angle
+invariable. The distance of the edges of the Knives from one another at
+the distance of four Inches from the angular Point, where the edges of
+the Knives met, was the eighth part of an Inch; and therefore the Angle
+contain'd by the edges was about one Degree 54: The Knives thus fix'd
+together I placed in a beam of the Sun's Light, let into my darken'd
+Chamber through a Hole the 42d Part of an Inch wide, at the distance of
+10 or 15 Feet from the Hole, and let the Light which passed between
+their edges fall very obliquely upon a smooth white Ruler at the
+distance of half an Inch, or an Inch from the Knives, and there saw the
+Fringes by the two edges of the Knives run along the edges of the
+Shadows of the Knives in Lines parallel to those edges without growing
+sensibly broader, till they met in Angles equal to the Angle contained
+by the edges of the Knives, and where they met and joined they ended
+without crossing one another. But if the Ruler was held at a much
+greater distance from the Knives, the Fringes where they were farther
+from the Place of their Meeting, were a little narrower, and became
+something broader and broader as they approach'd nearer and nearer to
+one another, and after they met they cross'd one another, and then
+became much broader than before.
+
+Whence I gather that the distances at which the Fringes pass by the
+Knives are not increased nor alter'd by the approach of the Knives, but
+the Angles in which the Rays are there bent are much increased by that
+approach; and that the Knife which is nearest any Ray determines which
+way the Ray shall be bent, and the other Knife increases the bent.
+
+_Obs._ 9. When the Rays fell very obliquely upon the Ruler at the
+distance of the third Part of an Inch from the Knives, the dark Line
+between the first and second Fringe of the Shadow of one Knife, and the
+dark Line between the first and second Fringe of the Shadow of the other
+knife met with one another, at the distance of the fifth Part of an Inch
+from the end of the Light which passed between the Knives at the
+concourse of their edges. And therefore the distance of the edges of the
+Knives at the meeting of these dark Lines was the 160th Part of an Inch.
+For as four Inches to the eighth Part of an Inch, so is any Length of
+the edges of the Knives measured from the point of their concourse to
+the distance of the edges of the Knives at the end of that Length, and
+so is the fifth Part of an Inch to the 160th Part. So then the dark
+Lines above-mention'd meet in the middle of the Light which passes
+between the Knives where they are distant the 160th Part of an Inch, and
+the one half of that Light passes by the edge of one Knife at a distance
+not greater than the 320th Part of an Inch, and falling upon the Paper
+makes the Fringes of the Shadow of that Knife, and the other half passes
+by the edge of the other Knife, at a distance not greater than the 320th
+Part of an Inch, and falling upon the Paper makes the Fringes of the
+Shadow of the other Knife. But if the Paper be held at a distance from
+the Knives greater than the third Part of an Inch, the dark Lines
+above-mention'd meet at a greater distance than the fifth Part of an
+Inch from the end of the Light which passed between the Knives at the
+concourse of their edges; and therefore the Light which falls upon the
+Paper where those dark Lines meet passes between the Knives where the
+edges are distant above the 160th part of an Inch.
+
+For at another time, when the two Knives were distant eight Feet and
+five Inches from the little hole in the Window, made with a small Pin as
+above, the Light which fell upon the Paper where the aforesaid dark
+lines met, passed between the Knives, where the distance between their
+edges was as in the following Table, when the distance of the Paper from
+the Knives was also as follows.
+
+-----------------------------+------------------------------
+                             | Distances between the edges
+ Distances of the Paper      |  of the Knives in millesimal
+ from the Knives in Inches.  |      parts of an Inch.
+-----------------------------+------------------------------
+          1-1/2.             |             0'012
+          3-1/3.             |             0'020
+          8-3/5.             |             0'034
+         32.                 |             0'057
+         96.                 |             0'081
+        131.                 |             0'087
+_____________________________|______________________________
+
+And hence I gather, that the Light which makes the Fringes upon the
+Paper is not the same Light at all distances of the Paper from the
+Knives, but when the Paper is held near the Knives, the Fringes are made
+by Light which passes by the edges of the Knives at a less distance, and
+is more bent than when the Paper is held at a greater distance from the
+Knives.
+
+[Illustration: FIG. 3.]
+
+_Obs._ 10. When the Fringes of the Shadows of the Knives fell
+perpendicularly upon a Paper at a great distance from the Knives, they
+were in the form of Hyperbola's, and their Dimensions were as follows.
+Let CA, CB [in _Fig._ 3.] represent Lines drawn upon the Paper parallel
+to the edges of the Knives, and between which all the Light would fall,
+if it passed between the edges of the Knives without inflexion; DE a
+Right Line drawn through C making the Angles ACD, BCE, equal to one
+another, and terminating all the Light which falls upon the Paper from
+the point where the edges of the Knives meet; _eis_, _fkt_, and _glv_,
+three hyperbolical Lines representing the Terminus of the Shadow of one
+of the Knives, the dark Line between the first and second Fringes of
+that Shadow, and the dark Line between the second and third Fringes of
+the same Shadow; _xip_, _ykq_, and _zlr_, three other hyperbolical Lines
+representing the Terminus of the Shadow of the other Knife, the dark
+Line between the first and second Fringes of that Shadow, and the dark
+line between the second and third Fringes of the same Shadow. And
+conceive that these three Hyperbola's are like and equal to the former
+three, and cross them in the points _i_, _k_, and _l_, and that the
+Shadows of the Knives are terminated and distinguish'd from the first
+luminous Fringes by the lines _eis_ and _xip_, until the meeting and
+crossing of the Fringes, and then those lines cross the Fringes in the
+form of dark lines, terminating the first luminous Fringes within side,
+and distinguishing them from another Light which begins to appear at
+_i_, and illuminates all the triangular space _ip_DE_s_ comprehended by
+these dark lines, and the right line DE. Of these Hyperbola's one
+Asymptote is the line DE, and their other Asymptotes are parallel to the
+lines CA and CB. Let _rv_ represent a line drawn any where upon the
+Paper parallel to the Asymptote DE, and let this line cross the right
+lines AC in _m_, and BC in _n_, and the six dark hyperbolical lines in
+_p_, _q_, _r_; _s_, _t_, _v_; and by measuring the distances _ps_, _qt_,
+_rv_, and thence collecting the lengths of the Ordinates _np_, _nq_,
+_nr_ or _ms_, _mt_, _mv_, and doing this at several distances of the
+line _rv_ from the Asymptote DD, you may find as many points of these
+Hyperbola's as you please, and thereby know that these curve lines are
+Hyperbola's differing little from the conical Hyperbola. And by
+measuring the lines C_i_, C_k_, C_l_, you may find other points of these
+Curves.
+
+For instance; when the Knives were distant from the hole in the Window
+ten Feet, and the Paper from the Knives nine Feet, and the Angle
+contained by the edges of the Knives to which the Angle ACB is equal,
+was subtended by a Chord which was to the Radius as 1 to 32, and the
+distance of the line _rv_ from the Asymptote DE was half an Inch: I
+measured the lines _ps_, _qt_, _rv_, and found them 0'35, 0'65, 0'98
+Inches respectively; and by adding to their halfs the line 1/2 _mn_,
+(which here was the 128th part of an Inch, or 0'0078 Inches,) the Sums
+_np_, _nq_, _nr_, were 0'1828, 0'3328, 0'4978 Inches. I measured also
+the distances of the brightest parts of the Fringes which run between
+_pq_ and _st_, _qr_ and _tv_, and next beyond _r_ and _v_, and found
+them 0'5, 0'8, and 1'17 Inches.
+
+_Obs._ 11. The Sun shining into my darken'd Room through a small round
+hole made in a Plate of Lead with a slender Pin, as above; I placed at
+the hole a Prism to refract the Light, and form on the opposite Wall the
+Spectrum of Colours, described in the third Experiment of the first
+Book. And then I found that the Shadows of all Bodies held in the
+colour'd Light between the Prism and the Wall, were border'd with
+Fringes of the Colour of that Light in which they were held. In the full
+red Light they were totally red without any sensible blue or violet, and
+in the deep blue Light they were totally blue without any sensible red
+or yellow; and so in the green Light they were totally green, excepting
+a little yellow and blue, which were mixed in the green Light of the
+Prism. And comparing the Fringes made in the several colour'd Lights, I
+found that those made in the red Light were largest, those made in the
+violet were least, and those made in the green were of a middle bigness.
+For the Fringes with which the Shadow of a Man's Hair were bordered,
+being measured cross the Shadow at the distance of six Inches from the
+Hair, the distance between the middle and most luminous part of the
+first or innermost Fringe on one side of the Shadow, and that of the
+like Fringe on the other side of the Shadow, was in the full red Light
+1/37-1/4 of an Inch, and in the full violet 7/46. And the like distance
+between the middle and most luminous parts of the second Fringes on
+either side the Shadow was in the full red Light 1/22, and in the violet
+1/27 of an Inch. And these distances of the Fringes held the same
+proportion at all distances from the Hair without any sensible
+variation.
+
+So then the Rays which made these Fringes in the red Light passed by the
+Hair at a greater distance than those did which made the like Fringes in
+the violet; and therefore the Hair in causing these Fringes acted alike
+upon the red Light or least refrangible Rays at a greater distance, and
+upon the violet or most refrangible Rays at a less distance, and by
+those actions disposed the red Light into Larger Fringes, and the violet
+into smaller, and the Lights of intermediate Colours into Fringes of
+intermediate bignesses without changing the Colour of any sort of Light.
+
+When therefore the Hair in the first and second of these Observations
+was held in the white beam of the Sun's Light, and cast a Shadow which
+was border'd with three Fringes of coloured Light, those Colours arose
+not from any new modifications impress'd upon the Rays of Light by the
+Hair, but only from the various inflexions whereby the several Sorts of
+Rays were separated from one another, which before separation, by the
+mixture of all their Colours, composed the white beam of the Sun's
+Light, but whenever separated compose Lights of the several Colours
+which they are originally disposed to exhibit. In this 11th Observation,
+where the Colours are separated before the Light passes by the Hair, the
+least refrangible Rays, which when separated from the rest make red,
+were inflected at a greater distance from the Hair, so as to make three
+red Fringes at a greater distance from the middle of the Shadow of the
+Hair; and the most refrangible Rays which when separated make violet,
+were inflected at a less distance from the Hair, so as to make three
+violet Fringes at a less distance from the middle of the Shadow of the
+Hair. And other Rays of intermediate degrees of Refrangibility were
+inflected at intermediate distances from the Hair, so as to make Fringes
+of intermediate Colours at intermediate distances from the middle of the
+Shadow of the Hair. And in the second Observation, where all the Colours
+are mix'd in the white Light which passes by the Hair, these Colours are
+separated by the various inflexions of the Rays, and the Fringes which
+they make appear all together, and the innermost Fringes being
+contiguous make one broad Fringe composed of all the Colours in due
+order, the violet lying on the inside of the Fringe next the Shadow, the
+red on the outside farthest from the Shadow, and the blue, green, and
+yellow, in the middle. And, in like manner, the middlemost Fringes of
+all the Colours lying in order, and being contiguous, make another broad
+Fringe composed of all the Colours; and the outmost Fringes of all the
+Colours lying in order, and being contiguous, make a third broad Fringe
+composed of all the Colours. These are the three Fringes of colour'd
+Light with which the Shadows of all Bodies are border'd in the second
+Observation.
+
+When I made the foregoing Observations, I design'd to repeat most of
+them with more care and exactness, and to make some new ones for
+determining the manner how the Rays of Light are bent in their passage
+by Bodies, for making the Fringes of Colours with the dark lines between
+them. But I was then interrupted, and cannot now think of taking these
+things into farther Consideration. And since I have not finish'd this
+part of my Design, I shall conclude with proposing only some Queries, in
+order to a farther search to be made by others.
+
+_Query_ 1. Do not Bodies act upon Light at a distance, and by their
+action bend its Rays; and is not this action (_cæteris paribus_)
+strongest at the least distance?
+
+_Qu._ 2. Do not the Rays which differ in Refrangibility differ also in
+Flexibity; and are they not by their different Inflexions separated from
+one another, so as after separation to make the Colours in the three
+Fringes above described? And after what manner are they inflected to
+make those Fringes?
+
+_Qu._ 3. Are not the Rays of Light in passing by the edges and sides of
+Bodies, bent several times backwards and forwards, with a motion like
+that of an Eel? And do not the three Fringes of colour'd Light
+above-mention'd arise from three such bendings?
+
+_Qu._ 4. Do not the Rays of Light which fall upon Bodies, and are
+reflected or refracted, begin to bend before they arrive at the Bodies;
+and are they not reflected, refracted, and inflected, by one and the
+same Principle, acting variously in various Circumstances?
+
+_Qu._ 5. Do not Bodies and Light act mutually upon one another; that is
+to say, Bodies upon Light in emitting, reflecting, refracting and
+inflecting it, and Light upon Bodies for heating them, and putting their
+parts into a vibrating motion wherein heat consists?
+
+_Qu._ 6. Do not black Bodies conceive heat more easily from Light than
+those of other Colours do, by reason that the Light falling on them is
+not reflected outwards, but enters the Bodies, and is often reflected
+and refracted within them, until it be stifled and lost?
+
+_Qu._ 7. Is not the strength and vigor of the action between Light and
+sulphureous Bodies observed above, one reason why sulphureous Bodies
+take fire more readily, and burn more vehemently than other Bodies do?
+
+_Qu._ 8. Do not all fix'd Bodies, when heated beyond a certain degree,
+emit Light and shine; and is not this Emission perform'd by the
+vibrating motions of their parts? And do not all Bodies which abound
+with terrestrial parts, and especially with sulphureous ones, emit Light
+as often as those parts are sufficiently agitated; whether that
+agitation be made by Heat, or by Friction, or Percussion, or
+Putrefaction, or by any vital Motion, or any other Cause? As for
+instance; Sea-Water in a raging Storm; Quick-silver agitated in _vacuo_;
+the Back of a Cat, or Neck of a Horse, obliquely struck or rubbed in a
+dark place; Wood, Flesh and Fish while they putrefy; Vapours arising
+from putrefy'd Waters, usually call'd _Ignes Fatui_; Stacks of moist Hay
+or Corn growing hot by fermentation; Glow-worms and the Eyes of some
+Animals by vital Motions; the vulgar _Phosphorus_ agitated by the
+attrition of any Body, or by the acid Particles of the Air; Amber and
+some Diamonds by striking, pressing or rubbing them; Scrapings of Steel
+struck off with a Flint; Iron hammer'd very nimbly till it become so hot
+as to kindle Sulphur thrown upon it; the Axletrees of Chariots taking
+fire by the rapid rotation of the Wheels; and some Liquors mix'd with
+one another whose Particles come together with an Impetus, as Oil of
+Vitriol distilled from its weight of Nitre, and then mix'd with twice
+its weight of Oil of Anniseeds. So also a Globe of Glass about 8 or 10
+Inches in diameter, being put into a Frame where it may be swiftly
+turn'd round its Axis, will in turning shine where it rubs against the
+palm of ones Hand apply'd to it: And if at the same time a piece of
+white Paper or white Cloth, or the end of ones Finger be held at the
+distance of about a quarter of an Inch or half an Inch from that part of
+the Glass where it is most in motion, the electrick Vapour which is
+excited by the friction of the Glass against the Hand, will by dashing
+against the white Paper, Cloth or Finger, be put into such an agitation
+as to emit Light, and make the white Paper, Cloth or Finger, appear
+lucid like a Glowworm; and in rushing out of the Glass will sometimes
+push against the finger so as to be felt. And the same things have been
+found by rubbing a long and large Cylinder or Glass or Amber with a
+Paper held in ones hand, and continuing the friction till the Glass grew
+warm.
+
+_Qu._ 9. Is not Fire a Body heated so hot as to emit Light copiously?
+For what else is a red hot Iron than Fire? And what else is a burning
+Coal than red hot Wood?
+
+_Qu._ 10. Is not Flame a Vapour, Fume or Exhalation heated red hot, that
+is, so hot as to shine? For Bodies do not flame without emitting a
+copious Fume, and this Fume burns in the Flame. The _Ignis Fatuus_ is a
+Vapour shining without heat, and is there not the same difference
+between this Vapour and Flame, as between rotten Wood shining without
+heat and burning Coals of Fire? In distilling hot Spirits, if the Head
+of the Still be taken off, the Vapour which ascends out of the Still
+will take fire at the Flame of a Candle, and turn into Flame, and the
+Flame will run along the Vapour from the Candle to the Still. Some
+Bodies heated by Motion, or Fermentation, if the heat grow intense, fume
+copiously, and if the heat be great enough the Fumes will shine and
+become Flame. Metals in fusion do not flame for want of a copious Fume,
+except Spelter, which fumes copiously, and thereby flames. All flaming
+Bodies, as Oil, Tallow, Wax, Wood, fossil Coals, Pitch, Sulphur, by
+flaming waste and vanish into burning Smoke, which Smoke, if the Flame
+be put out, is very thick and visible, and sometimes smells strongly,
+but in the Flame loses its smell by burning, and according to the nature
+of the Smoke the Flame is of several Colours, as that of Sulphur blue,
+that of Copper open'd with sublimate green, that of Tallow yellow, that
+of Camphire white. Smoke passing through Flame cannot but grow red hot,
+and red hot Smoke can have no other appearance than that of Flame. When
+Gun-powder takes fire, it goes away into Flaming Smoke. For the Charcoal
+and Sulphur easily take fire, and set fire to the Nitre, and the Spirit
+of the Nitre being thereby rarified into Vapour, rushes out with
+Explosion much after the manner that the Vapour of Water rushes out of
+an Æolipile; the Sulphur also being volatile is converted into Vapour,
+and augments the Explosion. And the acid Vapour of the Sulphur (namely
+that which distils under a Bell into Oil of Sulphur,) entring violently
+into the fix'd Body of the Nitre, sets loose the Spirit of the Nitre,
+and excites a great Fermentation, whereby the Heat is farther augmented,
+and the fix'd Body of the Nitre is also rarified into Fume, and the
+Explosion is thereby made more vehement and quick. For if Salt of Tartar
+be mix'd with Gun-powder, and that Mixture be warm'd till it takes fire,
+the Explosion will be more violent and quick than that of Gun-powder
+alone; which cannot proceed from any other cause than the action of the
+Vapour of the Gun-powder upon the Salt of Tartar, whereby that Salt is
+rarified. The Explosion of Gun-powder arises therefore from the violent
+action whereby all the Mixture being quickly and vehemently heated, is
+rarified and converted into Fume and Vapour: which Vapour, by the
+violence of that action, becoming so hot as to shine, appears in the
+form of Flame.
+
+_Qu._ 11. Do not great Bodies conserve their heat the longest, their
+parts heating one another, and may not great dense and fix'd Bodies,
+when heated beyond a certain degree, emit Light so copiously, as by the
+Emission and Re-action of its Light, and the Reflexions and Refractions
+of its Rays within its Pores to grow still hotter, till it comes to a
+certain period of heat, such as is that of the Sun? And are not the Sun
+and fix'd Stars great Earths vehemently hot, whose heat is conserved by
+the greatness of the Bodies, and the mutual Action and Reaction between
+them, and the Light which they emit, and whose parts are kept from
+fuming away, not only by their fixity, but also by the vast weight and
+density of the Atmospheres incumbent upon them; and very strongly
+compressing them, and condensing the Vapours and Exhalations which arise
+from them? For if Water be made warm in any pellucid Vessel emptied of
+Air, that Water in the _Vacuum_ will bubble and boil as vehemently as it
+would in the open Air in a Vessel set upon the Fire till it conceives a
+much greater heat. For the weight of the incumbent Atmosphere keeps down
+the Vapours, and hinders the Water from boiling, until it grow much
+hotter than is requisite to make it boil _in vacuo_. Also a mixture of
+Tin and Lead being put upon a red hot Iron _in vacuo_ emits a Fume and
+Flame, but the same Mixture in the open Air, by reason of the incumbent
+Atmosphere, does not so much as emit any Fume which can be perceived by
+Sight. In like manner the great weight of the Atmosphere which lies upon
+the Globe of the Sun may hinder Bodies there from rising up and going
+away from the Sun in the form of Vapours and Fumes, unless by means of a
+far greater heat than that which on the Surface of our Earth would very
+easily turn them into Vapours and Fumes. And the same great weight may
+condense those Vapours and Exhalations as soon as they shall at any time
+begin to ascend from the Sun, and make them presently fall back again
+into him, and by that action increase his Heat much after the manner
+that in our Earth the Air increases the Heat of a culinary Fire. And the
+same weight may hinder the Globe of the Sun from being diminish'd,
+unless by the Emission of Light, and a very small quantity of Vapours
+and Exhalations.
+
+_Qu._ 12. Do not the Rays of Light in falling upon the bottom of the Eye
+excite Vibrations in the _Tunica Retina_? Which Vibrations, being
+propagated along the solid Fibres of the optick Nerves into the Brain,
+cause the Sense of seeing. For because dense Bodies conserve their Heat
+a long time, and the densest Bodies conserve their Heat the longest, the
+Vibrations of their parts are of a lasting nature, and therefore may be
+propagated along solid Fibres of uniform dense Matter to a great
+distance, for conveying into the Brain the impressions made upon all the
+Organs of Sense. For that Motion which can continue long in one and the
+same part of a Body, can be propagated a long way from one part to
+another, supposing the Body homogeneal, so that the Motion may not be
+reflected, refracted, interrupted or disorder'd by any unevenness of the
+Body.
+
+_Qu._ 13. Do not several sorts of Rays make Vibrations of several
+bignesses, which according to their bignesses excite Sensations of
+several Colours, much after the manner that the Vibrations of the Air,
+according to their several bignesses excite Sensations of several
+Sounds? And particularly do not the most refrangible Rays excite the
+shortest Vibrations for making a Sensation of deep violet, the least
+refrangible the largest for making a Sensation of deep red, and the
+several intermediate sorts of Rays, Vibrations of several intermediate
+bignesses to make Sensations of the several intermediate Colours?
+
+_Qu._ 14. May not the harmony and discord of Colours arise from the
+proportions of the Vibrations propagated through the Fibres of the
+optick Nerves into the Brain, as the harmony and discord of Sounds arise
+from the proportions of the Vibrations of the Air? For some Colours, if
+they be view'd together, are agreeable to one another, as those of Gold
+and Indigo, and others disagree.
+
+_Qu._ 15. Are not the Species of Objects seen with both Eyes united
+where the optick Nerves meet before they come into the Brain, the Fibres
+on the right side of both Nerves uniting there, and after union going
+thence into the Brain in the Nerve which is on the right side of the
+Head, and the Fibres on the left side of both Nerves uniting in the same
+place, and after union going into the Brain in the Nerve which is on the
+left side of the Head, and these two Nerves meeting in the Brain in such
+a manner that their Fibres make but one entire Species or Picture, half
+of which on the right side of the Sensorium comes from the right side of
+both Eyes through the right side of both optick Nerves to the place
+where the Nerves meet, and from thence on the right side of the Head
+into the Brain, and the other half on the left side of the Sensorium
+comes in like manner from the left side of both Eyes. For the optick
+Nerves of such Animals as look the same way with both Eyes (as of Men,
+Dogs, Sheep, Oxen, &c.) meet before they come into the Brain, but the
+optick Nerves of such Animals as do not look the same way with both Eyes
+(as of Fishes, and of the Chameleon,) do not meet, if I am rightly
+inform'd.
+
+_Qu._ 16. When a Man in the dark presses either corner of his Eye with
+his Finger, and turns his Eye away from his Finger, he will see a Circle
+of Colours like those in the Feather of a Peacock's Tail. If the Eye and
+the Finger remain quiet these Colours vanish in a second Minute of Time,
+but if the Finger be moved with a quavering Motion they appear again. Do
+not these Colours arise from such Motions excited in the bottom of the
+Eye by the Pressure and Motion of the Finger, as, at other times are
+excited there by Light for causing Vision? And do not the Motions once
+excited continue about a Second of Time before they cease? And when a
+Man by a stroke upon his Eye sees a flash of Light, are not the like
+Motions excited in the _Retina_ by the stroke? And when a Coal of Fire
+moved nimbly in the circumference of a Circle, makes the whole
+circumference appear like a Circle of Fire; is it not because the
+Motions excited in the bottom of the Eye by the Rays of Light are of a
+lasting nature, and continue till the Coal of Fire in going round
+returns to its former place? And considering the lastingness of the
+Motions excited in the bottom of the Eye by Light, are they not of a
+vibrating nature?
+
+_Qu._ 17. If a stone be thrown into stagnating Water, the Waves excited
+thereby continue some time to arise in the place where the Stone fell
+into the Water, and are propagated from thence in concentrick Circles
+upon the Surface of the Water to great distances. And the Vibrations or
+Tremors excited in the Air by percussion, continue a little time to move
+from the place of percussion in concentrick Spheres to great distances.
+And in like manner, when a Ray of Light falls upon the Surface of any
+pellucid Body, and is there refracted or reflected, may not Waves of
+Vibrations, or Tremors, be thereby excited in the refracting or
+reflecting Medium at the point of Incidence, and continue to arise
+there, and to be propagated from thence as long as they continue to
+arise and be propagated, when they are excited in the bottom of the Eye
+by the Pressure or Motion of the Finger, or by the Light which comes
+from the Coal of Fire in the Experiments above-mention'd? and are not
+these Vibrations propagated from the point of Incidence to great
+distances? And do they not overtake the Rays of Light, and by overtaking
+them successively, do they not put them into the Fits of easy Reflexion
+and easy Transmission described above? For if the Rays endeavour to
+recede from the densest part of the Vibration, they may be alternately
+accelerated and retarded by the Vibrations overtaking them.
+
+_Qu._ 18. If in two large tall cylindrical Vessels of Glass inverted,
+two little Thermometers be suspended so as not to touch the Vessels, and
+the Air be drawn out of one of these Vessels, and these Vessels thus
+prepared be carried out of a cold place into a warm one; the Thermometer
+_in vacuo_ will grow warm as much, and almost as soon as the Thermometer
+which is not _in vacuo_. And when the Vessels are carried back into the
+cold place, the Thermometer _in vacuo_ will grow cold almost as soon as
+the other Thermometer. Is not the Heat of the warm Room convey'd through
+the _Vacuum_ by the Vibrations of a much subtiler Medium than Air, which
+after the Air was drawn out remained in the _Vacuum_? And is not this
+Medium the same with that Medium by which Light is refracted and
+reflected, and by whose Vibrations Light communicates Heat to Bodies,
+and is put into Fits of easy Reflexion and easy Transmission? And do not
+the Vibrations of this Medium in hot Bodies contribute to the
+intenseness and duration of their Heat? And do not hot Bodies
+communicate their Heat to contiguous cold ones, by the Vibrations of
+this Medium propagated from them into the cold ones? And is not this
+Medium exceedingly more rare and subtile than the Air, and exceedingly
+more elastick and active? And doth it not readily pervade all Bodies?
+And is it not (by its elastick force) expanded through all the Heavens?
+
+_Qu._ 19. Doth not the Refraction of Light proceed from the different
+density of this Æthereal Medium in different places, the Light receding
+always from the denser parts of the Medium? And is not the density
+thereof greater in free and open Spaces void of Air and other grosser
+Bodies, than within the Pores of Water, Glass, Crystal, Gems, and other
+compact Bodies? For when Light passes through Glass or Crystal, and
+falling very obliquely upon the farther Surface thereof is totally
+reflected, the total Reflexion ought to proceed rather from the density
+and vigour of the Medium without and beyond the Glass, than from the
+rarity and weakness thereof.
+
+_Qu._ 20. Doth not this Æthereal Medium in passing out of Water, Glass,
+Crystal, and other compact and dense Bodies into empty Spaces, grow
+denser and denser by degrees, and by that means refract the Rays of
+Light not in a point, but by bending them gradually in curve Lines? And
+doth not the gradual condensation of this Medium extend to some distance
+from the Bodies, and thereby cause the Inflexions of the Rays of Light,
+which pass by the edges of dense Bodies, at some distance from the
+Bodies?
+
+_Qu._ 21. Is not this Medium much rarer within the dense Bodies of the
+Sun, Stars, Planets and Comets, than in the empty celestial Spaces
+between them? And in passing from them to great distances, doth it not
+grow denser and denser perpetually, and thereby cause the gravity of
+those great Bodies towards one another, and of their parts towards the
+Bodies; every Body endeavouring to go from the denser parts of the
+Medium towards the rarer? For if this Medium be rarer within the Sun's
+Body than at its Surface, and rarer there than at the hundredth part of
+an Inch from its Body, and rarer there than at the fiftieth part of an
+Inch from its Body, and rarer there than at the Orb of _Saturn_; I see
+no reason why the Increase of density should stop any where, and not
+rather be continued through all distances from the Sun to _Saturn_, and
+beyond. And though this Increase of density may at great distances be
+exceeding slow, yet if the elastick force of this Medium be exceeding
+great, it may suffice to impel Bodies from the denser parts of the
+Medium towards the rarer, with all that power which we call Gravity. And
+that the elastick force of this Medium is exceeding great, may be
+gather'd from the swiftness of its Vibrations. Sounds move about 1140
+_English_ Feet in a second Minute of Time, and in seven or eight Minutes
+of Time they move about one hundred _English_ Miles. Light moves from
+the Sun to us in about seven or eight Minutes of Time, which distance is
+about 70,000,000 _English_ Miles, supposing the horizontal Parallax of
+the Sun to be about 12´´. And the Vibrations or Pulses of this Medium,
+that they may cause the alternate Fits of easy Transmission and easy
+Reflexion, must be swifter than Light, and by consequence above 700,000
+times swifter than Sounds. And therefore the elastick force of this
+Medium, in proportion to its density, must be above 700000 x 700000
+(that is, above 490,000,000,000) times greater than the elastick force
+of the Air is in proportion to its density. For the Velocities of the
+Pulses of elastick Mediums are in a subduplicate _Ratio_ of the
+Elasticities and the Rarities of the Mediums taken together.
+
+As Attraction is stronger in small Magnets than in great ones in
+proportion to their Bulk, and Gravity is greater in the Surfaces of
+small Planets than in those of great ones in proportion to their bulk,
+and small Bodies are agitated much more by electric attraction than
+great ones; so the smallness of the Rays of Light may contribute very
+much to the power of the Agent by which they are refracted. And so if
+any one should suppose that _Æther_ (like our Air) may contain Particles
+which endeavour to recede from one another (for I do not know what this
+_Æther_ is) and that its Particles are exceedingly smaller than those of
+Air, or even than those of Light: The exceeding smallness of its
+Particles may contribute to the greatness of the force by which those
+Particles may recede from one another, and thereby make that Medium
+exceedingly more rare and elastick than Air, and by consequence
+exceedingly less able to resist the motions of Projectiles, and
+exceedingly more able to press upon gross Bodies, by endeavouring to
+expand it self.
+
+_Qu._ 22. May not Planets and Comets, and all gross Bodies, perform
+their Motions more freely, and with less resistance in this Æthereal
+Medium than in any Fluid, which fills all Space adequately without
+leaving any Pores, and by consequence is much denser than Quick-silver
+or Gold? And may not its resistance be so small, as to be
+inconsiderable? For instance; If this _Æther_ (for so I will call it)
+should be supposed 700000 times more elastick than our Air, and above
+700000 times more rare; its resistance would be above 600,000,000 times
+less than that of Water. And so small a resistance would scarce make any
+sensible alteration in the Motions of the Planets in ten thousand
+Years. If any one would ask how a Medium can be so rare, let him tell me
+how the Air, in the upper parts of the Atmosphere, can be above an
+hundred thousand thousand times rarer than Gold. Let him also tell me,
+how an electrick Body can by Friction emit an Exhalation so rare and
+subtile, and yet so potent, as by its Emission to cause no sensible
+Diminution of the weight of the electrick Body, and to be expanded
+through a Sphere, whose Diameter is above two Feet, and yet to be able
+to agitate and carry up Leaf Copper, or Leaf Gold, at the distance of
+above a Foot from the electrick Body? And how the Effluvia of a Magnet
+can be so rare and subtile, as to pass through a Plate of Glass without
+any Resistance or Diminution of their Force, and yet so potent as to
+turn a magnetick Needle beyond the Glass?
+
+_Qu._ 23. Is not Vision perform'd chiefly by the Vibrations of this
+Medium, excited in the bottom of the Eye by the Rays of Light, and
+propagated through the solid, pellucid and uniform Capillamenta of the
+optick Nerves into the place of Sensation? And is not Hearing perform'd
+by the Vibrations either of this or some other Medium, excited in the
+auditory Nerves by the Tremors of the Air, and propagated through the
+solid, pellucid and uniform Capillamenta of those Nerves into the place
+of Sensation? And so of the other Senses.
+
+_Qu._ 24. Is not Animal Motion perform'd by the Vibrations of this
+Medium, excited in the Brain by the power of the Will, and propagated
+from thence through the solid, pellucid and uniform Capillamenta of the
+Nerves into the Muscles, for contracting and dilating them? I suppose
+that the Capillamenta of the Nerves are each of them solid and uniform,
+that the vibrating Motion of the Æthereal Medium may be propagated along
+them from one end to the other uniformly, and without interruption: For
+Obstructions in the Nerves create Palsies. And that they may be
+sufficiently uniform, I suppose them to be pellucid when view'd singly,
+tho' the Reflexions in their cylindrical Surfaces may make the whole
+Nerve (composed of many Capillamenta) appear opake and white. For
+opacity arises from reflecting Surfaces, such as may disturb and
+interrupt the Motions of this Medium.
+
+[Sidenote: _See the following Scheme, p. 356._]
+
+_Qu._ 25. Are there not other original Properties of the Rays of Light,
+besides those already described? An instance of another original
+Property we have in the Refraction of Island Crystal, described first by
+_Erasmus Bartholine_, and afterwards more exactly by _Hugenius_, in his
+Book _De la Lumiere_. This Crystal is a pellucid fissile Stone, clear as
+Water or Crystal of the Rock, and without Colour; enduring a red Heat
+without losing its transparency, and in a very strong Heat calcining
+without Fusion. Steep'd a Day or two in Water, it loses its natural
+Polish. Being rubb'd on Cloth, it attracts pieces of Straws and other
+light things, like Ambar or Glass; and with _Aqua fortis_ it makes an
+Ebullition. It seems to be a sort of Talk, and is found in form of an
+oblique Parallelopiped, with six parallelogram Sides and eight solid
+Angles. The obtuse Angles of the Parallelograms are each of them 101
+Degrees and 52 Minutes; the acute ones 78 Degrees and 8 Minutes. Two of
+the solid Angles opposite to one another, as C and E, are compassed each
+of them with three of these obtuse Angles, and each of the other six
+with one obtuse and two acute ones. It cleaves easily in planes parallel
+to any of its Sides, and not in any other Planes. It cleaves with a
+glossy polite Surface not perfectly plane, but with some little
+unevenness. It is easily scratch'd, and by reason of its softness it
+takes a Polish very difficultly. It polishes better upon polish'd
+Looking-glass than upon Metal, and perhaps better upon Pitch, Leather or
+Parchment. Afterwards it must be rubb'd with a little Oil or white of an
+Egg, to fill up its Scratches; whereby it will become very transparent
+and polite. But for several Experiments, it is not necessary to polish
+it. If a piece of this crystalline Stone be laid upon a Book, every
+Letter of the Book seen through it will appear double, by means of a
+double Refraction. And if any beam of Light falls either
+perpendicularly, or in any oblique Angle upon any Surface of this
+Crystal, it becomes divided into two beams by means of the same double
+Refraction. Which beams are of the same Colour with the incident beam of
+Light, and seem equal to one another in the quantity of their Light, or
+very nearly equal. One of these Refractions is perform'd by the usual
+Rule of Opticks, the Sine of Incidence out of Air into this Crystal
+being to the Sine of Refraction, as five to three. The other
+Refraction, which may be called the unusual Refraction, is perform'd by
+the following Rule.
+
+[Illustration: FIG. 4.]
+
+Let ADBC represent the refracting Surface of the Crystal, C the biggest
+solid Angle at that Surface, GEHF the opposite Surface, and CK a
+perpendicular on that Surface. This perpendicular makes with the edge of
+the Crystal CF, an Angle of 19 Degr. 3'. Join KF, and in it take KL, so
+that the Angle KCL be 6 Degr. 40'. and the Angle LCF 12 Degr. 23'. And
+if ST represent any beam of Light incident at T in any Angle upon the
+refracting Surface ADBC, let TV be the refracted beam determin'd by the
+given Portion of the Sines 5 to 3, according to the usual Rule of
+Opticks. Draw VX parallel and equal to KL. Draw it the same way from V
+in which L lieth from K; and joining TX, this line TX shall be the other
+refracted beam carried from T to X, by the unusual Refraction.
+
+If therefore the incident beam ST be perpendicular to the refracting
+Surface, the two beams TV and TX, into which it shall become divided,
+shall be parallel to the lines CK and CL; one of those beams going
+through the Crystal perpendicularly, as it ought to do by the usual Laws
+of Opticks, and the other TX by an unusual Refraction diverging from the
+perpendicular, and making with it an Angle VTX of about 6-2/3 Degrees,
+as is found by Experience. And hence, the Plane VTX, and such like
+Planes which are parallel to the Plane CFK, may be called the Planes of
+perpendicular Refraction. And the Coast towards which the lines KL and
+VX are drawn, may be call'd the Coast of unusual Refraction.
+
+In like manner Crystal of the Rock has a double Refraction: But the
+difference of the two Refractions is not so great and manifest as in
+Island Crystal.
+
+When the beam ST incident on Island Crystal is divided into two beams TV
+and TX, and these two beams arrive at the farther Surface of the Glass;
+the beam TV, which was refracted at the first Surface after the usual
+manner, shall be again refracted entirely after the usual manner at the
+second Surface; and the beam TX, which was refracted after the unusual
+manner in the first Surface, shall be again refracted entirely after the
+unusual manner in the second Surface; so that both these beams shall
+emerge out of the second Surface in lines parallel to the first incident
+beam ST.
+
+And if two pieces of Island Crystal be placed one after another, in such
+manner that all the Surfaces of the latter be parallel to all the
+corresponding Surfaces of the former: The Rays which are refracted after
+the usual manner in the first Surface of the first Crystal, shall be
+refracted after the usual manner in all the following Surfaces; and the
+Rays which are refracted after the unusual manner in the first Surface,
+shall be refracted after the unusual manner in all the following
+Surfaces. And the same thing happens, though the Surfaces of the
+Crystals be any ways inclined to one another, provided that their Planes
+of perpendicular Refraction be parallel to one another.
+
+And therefore there is an original difference in the Rays of Light, by
+means of which some Rays are in this Experiment constantly refracted
+after the usual manner, and others constantly after the unusual manner:
+For if the difference be not original, but arises from new Modifications
+impress'd on the Rays at their first Refraction, it would be alter'd by
+new Modifications in the three following Refractions; whereas it suffers
+no alteration, but is constant, and has the same effect upon the Rays in
+all the Refractions. The unusual Refraction is therefore perform'd by an
+original property of the Rays. And it remains to be enquired, whether
+the Rays have not more original Properties than are yet discover'd.
+
+_Qu._ 26. Have not the Rays of Light several sides, endued with several
+original Properties? For if the Planes of perpendicular Refraction of
+the second Crystal be at right Angles with the Planes of perpendicular
+Refraction of the first Crystal, the Rays which are refracted after the
+usual manner in passing through the first Crystal, will be all of them
+refracted after the unusual manner in passing through the second
+Crystal; and the Rays which are refracted after the unusual manner in
+passing through the first Crystal, will be all of them refracted after
+the usual manner in passing through the second Crystal. And therefore
+there are not two sorts of Rays differing in their nature from one
+another, one of which is constantly and in all Positions refracted after
+the usual manner, and the other constantly and in all Positions after
+the unusual manner. The difference between the two sorts of Rays in the
+Experiment mention'd in the 25th Question, was only in the Positions of
+the Sides of the Rays to the Planes of perpendicular Refraction. For one
+and the same Ray is here refracted sometimes after the usual, and
+sometimes after the unusual manner, according to the Position which its
+Sides have to the Crystals. If the Sides of the Ray are posited the same
+way to both Crystals, it is refracted after the same manner in them
+both: But if that side of the Ray which looks towards the Coast of the
+unusual Refraction of the first Crystal, be 90 Degrees from that side of
+the same Ray which looks toward the Coast of the unusual Refraction of
+the second Crystal, (which may be effected by varying the Position of
+the second Crystal to the first, and by consequence to the Rays of
+Light,) the Ray shall be refracted after several manners in the several
+Crystals. There is nothing more required to determine whether the Rays
+of Light which fall upon the second Crystal shall be refracted after
+the usual or after the unusual manner, but to turn about this Crystal,
+so that the Coast of this Crystal's unusual Refraction may be on this or
+on that side of the Ray. And therefore every Ray may be consider'd as
+having four Sides or Quarters, two of which opposite to one another
+incline the Ray to be refracted after the unusual manner, as often as
+either of them are turn'd towards the Coast of unusual Refraction; and
+the other two, whenever either of them are turn'd towards the Coast of
+unusual Refraction, do not incline it to be otherwise refracted than
+after the usual manner. The two first may therefore be call'd the Sides
+of unusual Refraction. And since these Dispositions were in the Rays
+before their Incidence on the second, third, and fourth Surfaces of the
+two Crystals, and suffered no alteration (so far as appears,) by the
+Refraction of the Rays in their passage through those Surfaces, and the
+Rays were refracted by the same Laws in all the four Surfaces; it
+appears that those Dispositions were in the Rays originally, and
+suffer'd no alteration by the first Refraction, and that by means of
+those Dispositions the Rays were refracted at their Incidence on the
+first Surface of the first Crystal, some of them after the usual, and
+some of them after the unusual manner, accordingly as their Sides of
+unusual Refraction were then turn'd towards the Coast of the unusual
+Refraction of that Crystal, or sideways from it.
+
+Every Ray of Light has therefore two opposite Sides, originally endued
+with a Property on which the unusual Refraction depends, and the other
+two opposite Sides not endued with that Property. And it remains to be
+enquired, whether there are not more Properties of Light by which the
+Sides of the Rays differ, and are distinguished from one another.
+
+In explaining the difference of the Sides of the Rays above mention'd, I
+have supposed that the Rays fall perpendicularly on the first Crystal.
+But if they fall obliquely on it, the Success is the same. Those Rays
+which are refracted after the usual manner in the first Crystal, will be
+refracted after the unusual manner in the second Crystal, supposing the
+Planes of perpendicular Refraction to be at right Angles with one
+another, as above; and on the contrary.
+
+If the Planes of the perpendicular Refraction of the two Crystals be
+neither parallel nor perpendicular to one another, but contain an acute
+Angle: The two beams of Light which emerge out of the first Crystal,
+will be each of them divided into two more at their Incidence on the
+second Crystal. For in this case the Rays in each of the two beams will
+some of them have their Sides of unusual Refraction, and some of them
+their other Sides turn'd towards the Coast of the unusual Refraction of
+the second Crystal.
+
+_Qu._ 27. Are not all Hypotheses erroneous which have hitherto been
+invented for explaining the Phænomena of Light, by new Modifications of
+the Rays? For those Phænomena depend not upon new Modifications, as has
+been supposed, but upon the original and unchangeable Properties of the
+Rays.
+
+_Qu._ 28. Are not all Hypotheses erroneous, in which Light is supposed
+to consist in Pression or Motion, propagated through a fluid Medium? For
+in all these Hypotheses the Phænomena of Light have been hitherto
+explain'd by supposing that they arise from new Modifications of the
+Rays; which is an erroneous Supposition.
+
+If Light consisted only in Pression propagated without actual Motion, it
+would not be able to agitate and heat the Bodies which refract and
+reflect it. If it consisted in Motion propagated to all distances in an
+instant, it would require an infinite force every moment, in every
+shining Particle, to generate that Motion. And if it consisted in
+Pression or Motion, propagated either in an instant or in time, it would
+bend into the Shadow. For Pression or Motion cannot be propagated in a
+Fluid in right Lines, beyond an Obstacle which stops part of the Motion,
+but will bend and spread every way into the quiescent Medium which lies
+beyond the Obstacle. Gravity tends downwards, but the Pressure of Water
+arising from Gravity tends every way with equal Force, and is propagated
+as readily, and with as much force sideways as downwards, and through
+crooked passages as through strait ones. The Waves on the Surface of
+stagnating Water, passing by the sides of a broad Obstacle which stops
+part of them, bend afterwards and dilate themselves gradually into the
+quiet Water behind the Obstacle. The Waves, Pulses or Vibrations of the
+Air, wherein Sounds consist, bend manifestly, though not so much as the
+Waves of Water. For a Bell or a Cannon may be heard beyond a Hill which
+intercepts the sight of the sounding Body, and Sounds are propagated as
+readily through crooked Pipes as through streight ones. But Light is
+never known to follow crooked Passages nor to bend into the Shadow. For
+the fix'd Stars by the Interposition of any of the Planets cease to be
+seen. And so do the Parts of the Sun by the Interposition of the Moon,
+_Mercury_ or _Venus_. The Rays which pass very near to the edges of any
+Body, are bent a little by the action of the Body, as we shew'd above;
+but this bending is not towards but from the Shadow, and is perform'd
+only in the passage of the Ray by the Body, and at a very small distance
+from it. So soon as the Ray is past the Body, it goes right on.
+
+[Sidenote: _Mais pour dire comment cela se fait, je n'ay rien trove
+jusqu' ici qui me satisfasse._ C. H. de la lumiere, c. 5, p. 91.]
+
+To explain the unusual Refraction of Island Crystal by Pression or
+Motion propagated, has not hitherto been attempted (to my knowledge)
+except by _Huygens_, who for that end supposed two several vibrating
+Mediums within that Crystal. But when he tried the Refractions in two
+successive pieces of that Crystal, and found them such as is mention'd
+above; he confessed himself at a loss for explaining them. For Pressions
+or Motions, propagated from a shining Body through an uniform Medium,
+must be on all sides alike; whereas by those Experiments it appears,
+that the Rays of Light have different Properties in their different
+Sides. He suspected that the Pulses of _Æther_ in passing through the
+first Crystal might receive certain new Modifications, which might
+determine them to be propagated in this or that Medium within the
+second Crystal, according to the Position of that Crystal. But what
+Modifications those might be he could not say, nor think of any thing
+satisfactory in that Point. And if he had known that the unusual
+Refraction depends not on new Modifications, but on the original and
+unchangeable Dispositions of the Rays, he would have found it as
+difficult to explain how those Dispositions which he supposed to be
+impress'd on the Rays by the first Crystal, could be in them before
+their Incidence on that Crystal, and in general, how all Rays emitted by
+shining Bodies, can have those Dispositions in them from the beginning.
+To me, at least, this seems inexplicable, if Light be nothing else than
+Pression or Motion propagated through _Æther_.
+
+And it is as difficult to explain by these Hypotheses, how Rays can be
+alternately in Fits of easy Reflexion and easy Transmission; unless
+perhaps one might suppose that there are in all Space two Æthereal
+vibrating Mediums, and that the Vibrations of one of them constitute
+Light, and the Vibrations of the other are swifter, and as often as they
+overtake the Vibrations of the first, put them into those Fits. But how
+two _Æthers_ can be diffused through all Space, one of which acts upon
+the other, and by consequence is re-acted upon, without retarding,
+shattering, dispersing and confounding one anothers Motions, is
+inconceivable. And against filling the Heavens with fluid Mediums,
+unless they be exceeding rare, a great Objection arises from the regular
+and very lasting Motions of the Planets and Comets in all manner of
+Courses through the Heavens. For thence it is manifest, that the Heavens
+are void of all sensible Resistance, and by consequence of all sensible
+Matter.
+
+For the resisting Power of fluid Mediums arises partly from the
+Attrition of the Parts of the Medium, and partly from the _Vis inertiæ_
+of the Matter. That part of the Resistance of a spherical Body which
+arises from the Attrition of the Parts of the Medium is very nearly as
+the Diameter, or, at the most, as the _Factum_ of the Diameter, and the
+Velocity of the spherical Body together. And that part of the Resistance
+which arises from the _Vis inertiæ_ of the Matter, is as the Square of
+that _Factum_. And by this difference the two sorts of Resistance may be
+distinguish'd from one another in any Medium; and these being
+distinguish'd, it will be found that almost all the Resistance of Bodies
+of a competent Magnitude moving in Air, Water, Quick-silver, and such
+like Fluids with a competent Velocity, arises from the _Vis inertiæ_ of
+the Parts of the Fluid.
+
+Now that part of the resisting Power of any Medium which arises from the
+Tenacity, Friction or Attrition of the Parts of the Medium, may be
+diminish'd by dividing the Matter into smaller Parts, and making the
+Parts more smooth and slippery: But that part of the Resistance which
+arises from the _Vis inertiæ_, is proportional to the Density of the
+Matter, and cannot be diminish'd by dividing the Matter into smaller
+Parts, nor by any other means than by decreasing the Density of the
+Medium. And for these Reasons the Density of fluid Mediums is very
+nearly proportional to their Resistance. Liquors which differ not much
+in Density, as Water, Spirit of Wine, Spirit of Turpentine, hot Oil,
+differ not much in Resistance. Water is thirteen or fourteen times
+lighter than Quick-silver and by consequence thirteen or fourteen times
+rarer, and its Resistance is less than that of Quick-silver in the same
+Proportion, or thereabouts, as I have found by Experiments made with
+Pendulums. The open Air in which we breathe is eight or nine hundred
+times lighter than Water, and by consequence eight or nine hundred times
+rarer, and accordingly its Resistance is less than that of Water in the
+same Proportion, or thereabouts; as I have also found by Experiments
+made with Pendulums. And in thinner Air the Resistance is still less,
+and at length, by ratifying the Air, becomes insensible. For small
+Feathers falling in the open Air meet with great Resistance, but in a
+tall Glass well emptied of Air, they fall as fast as Lead or Gold, as I
+have seen tried several times. Whence the Resistance seems still to
+decrease in proportion to the Density of the Fluid. For I do not find by
+any Experiments, that Bodies moving in Quick-silver, Water or Air, meet
+with any other sensible Resistance than what arises from the Density and
+Tenacity of those sensible Fluids, as they would do if the Pores of
+those Fluids, and all other Spaces, were filled with a dense and
+subtile Fluid. Now if the Resistance in a Vessel well emptied of Air,
+was but an hundred times less than in the open Air, it would be about a
+million of times less than in Quick-silver. But it seems to be much less
+in such a Vessel, and still much less in the Heavens, at the height of
+three or four hundred Miles from the Earth, or above. For Mr. _Boyle_
+has shew'd that Air may be rarified above ten thousand times in Vessels
+of Glass; and the Heavens are much emptier of Air than any _Vacuum_ we
+can make below. For since the Air is compress'd by the Weight of the
+incumbent Atmosphere, and the Density of Air is proportional to the
+Force compressing it, it follows by Computation, that at the height of
+about seven and a half _English_ Miles from the Earth, the Air is four
+times rarer than at the Surface of the Earth; and at the height of 15
+Miles it is sixteen times rarer than that at the Surface of the Earth;
+and at the height of 22-1/2, 30, or 38 Miles, it is respectively 64,
+256, or 1024 times rarer, or thereabouts; and at the height of 76, 152,
+228 Miles, it is about 1000000, 1000000000000, or 1000000000000000000
+times rarer; and so on.
+
+Heat promotes Fluidity very much by diminishing the Tenacity of Bodies.
+It makes many Bodies fluid which are not fluid in cold, and increases
+the Fluidity of tenacious Liquids, as of Oil, Balsam, and Honey, and
+thereby decreases their Resistance. But it decreases not the Resistance
+of Water considerably, as it would do if any considerable part of the
+Resistance of Water arose from the Attrition or Tenacity of its Parts.
+And therefore the Resistance of Water arises principally and almost
+entirely from the _Vis inertiæ_ of its Matter; and by consequence, if
+the Heavens were as dense as Water, they would not have much less
+Resistance than Water; if as dense as Quick-silver, they would not have
+much less Resistance than Quick-silver; if absolutely dense, or full of
+Matter without any _Vacuum_, let the Matter be never so subtil and
+fluid, they would have a greater Resistance than Quick-silver. A solid
+Globe in such a Medium would lose above half its Motion in moving three
+times the length of its Diameter, and a Globe not solid (such as are the
+Planets,) would be retarded sooner. And therefore to make way for the
+regular and lasting Motions of the Planets and Comets, it's necessary to
+empty the Heavens of all Matter, except perhaps some very thin Vapours,
+Steams, or Effluvia, arising from the Atmospheres of the Earth, Planets,
+and Comets, and from such an exceedingly rare Æthereal Medium as we
+described above. A dense Fluid can be of no use for explaining the
+Phænomena of Nature, the Motions of the Planets and Comets being better
+explain'd without it. It serves only to disturb and retard the Motions
+of those great Bodies, and make the Frame of Nature languish: And in the
+Pores of Bodies, it serves only to stop the vibrating Motions of their
+Parts, wherein their Heat and Activity consists. And as it is of no use,
+and hinders the Operations of Nature, and makes her languish, so there
+is no evidence for its Existence, and therefore it ought to be rejected.
+And if it be rejected, the Hypotheses that Light consists in Pression
+or Motion, propagated through such a Medium, are rejected with it.
+
+And for rejecting such a Medium, we have the Authority of those the
+oldest and most celebrated Philosophers of _Greece_ and _Phoenicia_,
+who made a _Vacuum_, and Atoms, and the Gravity of Atoms, the first
+Principles of their Philosophy; tacitly attributing Gravity to some
+other Cause than dense Matter. Later Philosophers banish the
+Consideration of such a Cause out of natural Philosophy, feigning
+Hypotheses for explaining all things mechanically, and referring other
+Causes to Metaphysicks: Whereas the main Business of natural Philosophy
+is to argue from Phænomena without feigning Hypotheses, and to deduce
+Causes from Effects, till we come to the very first Cause, which
+certainly is not mechanical; and not only to unfold the Mechanism of the
+World, but chiefly to resolve these and such like Questions. What is
+there in places almost empty of Matter, and whence is it that the Sun
+and Planets gravitate towards one another, without dense Matter between
+them? Whence is it that Nature doth nothing in vain; and whence arises
+all that Order and Beauty which we see in the World? To what end are
+Comets, and whence is it that Planets move all one and the same way in
+Orbs concentrick, while Comets move all manner of ways in Orbs very
+excentrick; and what hinders the fix'd Stars from falling upon one
+another? How came the Bodies of Animals to be contrived with so much
+Art, and for what ends were their several Parts? Was the Eye contrived
+without Skill in Opticks, and the Ear without Knowledge of Sounds? How
+do the Motions of the Body follow from the Will, and whence is the
+Instinct in Animals? Is not the Sensory of Animals that place to which
+the sensitive Substance is present, and into which the sensible Species
+of Things are carried through the Nerves and Brain, that there they may
+be perceived by their immediate presence to that Substance? And these
+things being rightly dispatch'd, does it not appear from Phænomena that
+there is a Being incorporeal, living, intelligent, omnipresent, who in
+infinite Space, as it were in his Sensory, sees the things themselves
+intimately, and throughly perceives them, and comprehends them wholly by
+their immediate presence to himself: Of which things the Images only
+carried through the Organs of Sense into our little Sensoriums, are
+there seen and beheld by that which in us perceives and thinks. And
+though every true Step made in this Philosophy brings us not immediately
+to the Knowledge of the first Cause, yet it brings us nearer to it, and
+on that account is to be highly valued.
+
+_Qu._ 29. Are not the Rays of Light very small Bodies emitted from
+shining Substances? For such Bodies will pass through uniform Mediums in
+right Lines without bending into the Shadow, which is the Nature of the
+Rays of Light. They will also be capable of several Properties, and be
+able to conserve their Properties unchanged in passing through several
+Mediums, which is another Condition of the Rays of Light. Pellucid
+Substances act upon the Rays of Light at a distance in refracting,
+reflecting, and inflecting them, and the Rays mutually agitate the Parts
+of those Substances at a distance for heating them; and this Action and
+Re-action at a distance very much resembles an attractive Force between
+Bodies. If Refraction be perform'd by Attraction of the Rays, the Sines
+of Incidence must be to the Sines of Refraction in a given Proportion,
+as we shew'd in our Principles of Philosophy: And this Rule is true by
+Experience. The Rays of Light in going out of Glass into a _Vacuum_, are
+bent towards the Glass; and if they fall too obliquely on the _Vacuum_,
+they are bent backwards into the Glass, and totally reflected; and this
+Reflexion cannot be ascribed to the Resistance of an absolute _Vacuum_,
+but must be caused by the Power of the Glass attracting the Rays at
+their going out of it into the _Vacuum_, and bringing them back. For if
+the farther Surface of the Glass be moisten'd with Water or clear Oil,
+or liquid and clear Honey, the Rays which would otherwise be reflected
+will go into the Water, Oil, or Honey; and therefore are not reflected
+before they arrive at the farther Surface of the Glass, and begin to go
+out of it. If they go out of it into the Water, Oil, or Honey, they go
+on, because the Attraction of the Glass is almost balanced and rendered
+ineffectual by the contrary Attraction of the Liquor. But if they go out
+of it into a _Vacuum_ which has no Attraction to balance that of the
+Glass, the Attraction of the Glass either bends and refracts them, or
+brings them back and reflects them. And this is still more evident by
+laying together two Prisms of Glass, or two Object-glasses of very long
+Telescopes, the one plane, the other a little convex, and so compressing
+them that they do not fully touch, nor are too far asunder. For the
+Light which falls upon the farther Surface of the first Glass where the
+Interval between the Glasses is not above the ten hundred thousandth
+Part of an Inch, will go through that Surface, and through the Air or
+_Vacuum_ between the Glasses, and enter into the second Glass, as was
+explain'd in the first, fourth, and eighth Observations of the first
+Part of the second Book. But, if the second Glass be taken away, the
+Light which goes out of the second Surface of the first Glass into the
+Air or _Vacuum_, will not go on forwards, but turns back into the first
+Glass, and is reflected; and therefore it is drawn back by the Power of
+the first Glass, there being nothing else to turn it back. Nothing more
+is requisite for producing all the variety of Colours, and degrees of
+Refrangibility, than that the Rays of Light be Bodies of different
+Sizes, the least of which may take violet the weakest and darkest of the
+Colours, and be more easily diverted by refracting Surfaces from the
+right Course; and the rest as they are bigger and bigger, may make the
+stronger and more lucid Colours, blue, green, yellow, and red, and be
+more and more difficultly diverted. Nothing more is requisite for
+putting the Rays of Light into Fits of easy Reflexion and easy
+Transmission, than that they be small Bodies which by their attractive
+Powers, or some other Force, stir up Vibrations in what they act upon,
+which Vibrations being swifter than the Rays, overtake them
+successively, and agitate them so as by turns to increase and decrease
+their Velocities, and thereby put them into those Fits. And lastly, the
+unusual Refraction of Island-Crystal looks very much as if it were
+perform'd by some kind of attractive virtue lodged in certain Sides both
+of the Rays, and of the Particles of the Crystal. For were it not for
+some kind of Disposition or Virtue lodged in some Sides of the Particles
+of the Crystal, and not in their other Sides, and which inclines and
+bends the Rays towards the Coast of unusual Refraction, the Rays which
+fall perpendicularly on the Crystal, would not be refracted towards that
+Coast rather than towards any other Coast, both at their Incidence and
+at their Emergence, so as to emerge perpendicularly by a contrary
+Situation of the Coast of unusual Refraction at the second Surface; the
+Crystal acting upon the Rays after they have pass'd through it, and are
+emerging into the Air; or, if you please, into a _Vacuum_. And since the
+Crystal by this Disposition or Virtue does not act upon the Rays, unless
+when one of their Sides of unusual Refraction looks towards that Coast,
+this argues a Virtue or Disposition in those Sides of the Rays, which
+answers to, and sympathizes with that Virtue or Disposition of the
+Crystal, as the Poles of two Magnets answer to one another. And as
+Magnetism may be intended and remitted, and is found only in the Magnet
+and in Iron: So this Virtue of refracting the perpendicular Rays is
+greater in Island-Crystal, less in Crystal of the Rock, and is not yet
+found in other Bodies. I do not say that this Virtue is magnetical: It
+seems to be of another kind. I only say, that whatever it be, it's
+difficult to conceive how the Rays of Light, unless they be Bodies, can
+have a permanent Virtue in two of their Sides which is not in their
+other Sides, and this without any regard to their Position to the Space
+or Medium through which they pass.
+
+What I mean in this Question by a _Vacuum_, and by the Attractions of
+the Rays of Light towards Glass or Crystal, may be understood by what
+was said in the 18th, 19th, and 20th Questions.
+
+_Quest._ 30. Are not gross Bodies and Light convertible into one
+another, and may not Bodies receive much of their Activity from the
+Particles of Light which enter their Composition? For all fix'd Bodies
+being heated emit Light so long as they continue sufficiently hot, and
+Light mutually stops in Bodies as often as its Rays strike upon their
+Parts, as we shew'd above. I know no Body less apt to shine than Water;
+and yet Water by frequent Distillations changes into fix'd Earth, as Mr.
+_Boyle_ has try'd; and then this Earth being enabled to endure a
+sufficient Heat, shines by Heat like other Bodies.
+
+The changing of Bodies into Light, and Light into Bodies, is very
+conformable to the Course of Nature, which seems delighted with
+Transmutations. Water, which is a very fluid tasteless Salt, she changes
+by Heat into Vapour, which is a sort of Air, and by Cold into Ice, which
+is a hard, pellucid, brittle, fusible Stone; and this Stone returns into
+Water by Heat, and Vapour returns into Water by Cold. Earth by Heat
+becomes Fire, and by Cold returns into Earth. Dense Bodies by
+Fermentation rarify into several sorts of Air, and this Air by
+Fermentation, and sometimes without it, returns into dense Bodies.
+Mercury appears sometimes in the form of a fluid Metal, sometimes in the
+form of a hard brittle Metal, sometimes in the form of a corrosive
+pellucid Salt call'd Sublimate, sometimes in the form of a tasteless,
+pellucid, volatile white Earth, call'd _Mercurius Dulcis_; or in that of
+a red opake volatile Earth, call'd Cinnaber; or in that of a red or
+white Precipitate, or in that of a fluid Salt; and in Distillation it
+turns into Vapour, and being agitated _in Vacuo_, it shines like Fire.
+And after all these Changes it returns again into its first form of
+Mercury. Eggs grow from insensible Magnitudes, and change into Animals;
+Tadpoles into Frogs; and Worms into Flies. All Birds, Beasts and Fishes,
+Insects, Trees, and other Vegetables, with their several Parts, grow out
+of Water and watry Tinctures and Salts, and by Putrefaction return again
+into watry Substances. And Water standing a few Days in the open Air,
+yields a Tincture, which (like that of Malt) by standing longer yields a
+Sediment and a Spirit, but before Putrefaction is fit Nourishment for
+Animals and Vegetables. And among such various and strange
+Transmutations, why may not Nature change Bodies into Light, and Light
+into Bodies?
+
+_Quest._ 31. Have not the small Particles of Bodies certain Powers,
+Virtues, or Forces, by which they act at a distance, not only upon the
+Rays of Light for reflecting, refracting, and inflecting them, but also
+upon one another for producing a great Part of the Phænomena of Nature?
+For it's well known, that Bodies act one upon another by the Attractions
+of Gravity, Magnetism, and Electricity; and these Instances shew the
+Tenor and Course of Nature, and make it not improbable but that there
+may be more attractive Powers than these. For Nature is very consonant
+and conformable to her self. How these Attractions may be perform'd, I
+do not here consider. What I call Attraction may be perform'd by
+impulse, or by some other means unknown to me. I use that Word here to
+signify only in general any Force by which Bodies tend towards one
+another, whatsoever be the Cause. For we must learn from the Phænomena
+of Nature what Bodies attract one another, and what are the Laws and
+Properties of the Attraction, before we enquire the Cause by which the
+Attraction is perform'd. The Attractions of Gravity, Magnetism, and
+Electricity, reach to very sensible distances, and so have been observed
+by vulgar Eyes, and there may be others which reach to so small
+distances as hitherto escape Observation; and perhaps electrical
+Attraction may reach to such small distances, even without being excited
+by Friction.
+
+For when Salt of Tartar runs _per Deliquium_, is not this done by an
+Attraction between the Particles of the Salt of Tartar, and the
+Particles of the Water which float in the Air in the form of Vapours?
+And why does not common Salt, or Salt-petre, or Vitriol, run _per
+Deliquium_, but for want of such an Attraction? Or why does not Salt of
+Tartar draw more Water out of the Air than in a certain Proportion to
+its quantity, but for want of an attractive Force after it is satiated
+with Water? And whence is it but from this attractive Power that Water
+which alone distils with a gentle luke-warm Heat, will not distil from
+Salt of Tartar without a great Heat? And is it not from the like
+attractive Power between the Particles of Oil of Vitriol and the
+Particles of Water, that Oil of Vitriol draws to it a good quantity of
+Water out of the Air, and after it is satiated draws no more, and in
+Distillation lets go the Water very difficultly? And when Water and Oil
+of Vitriol poured successively into the same Vessel grow very hot in the
+mixing, does not this Heat argue a great Motion in the Parts of the
+Liquors? And does not this Motion argue, that the Parts of the two
+Liquors in mixing coalesce with Violence, and by consequence rush
+towards one another with an accelerated Motion? And when _Aqua fortis_,
+or Spirit of Vitriol poured upon Filings of Iron dissolves the Filings
+with a great Heat and Ebullition, is not this Heat and Ebullition
+effected by a violent Motion of the Parts, and does not that Motion
+argue that the acid Parts of the Liquor rush towards the Parts of the
+Metal with violence, and run forcibly into its Pores till they get
+between its outmost Particles, and the main Mass of the Metal, and
+surrounding those Particles loosen them from the main Mass, and set them
+at liberty to float off into the Water? And when the acid Particles,
+which alone would distil with an easy Heat, will not separate from the
+Particles of the Metal without a very violent Heat, does not this
+confirm the Attraction between them?
+
+When Spirit of Vitriol poured upon common Salt or Salt-petre makes an
+Ebullition with the Salt, and unites with it, and in Distillation the
+Spirit of the common Salt or Salt-petre comes over much easier than it
+would do before, and the acid part of the Spirit of Vitriol stays
+behind; does not this argue that the fix'd Alcaly of the Salt attracts
+the acid Spirit of the Vitriol more strongly than its own Spirit, and
+not being able to hold them both, lets go its own? And when Oil of
+Vitriol is drawn off from its weight of Nitre, and from both the
+Ingredients a compound Spirit of Nitre is distilled, and two parts of
+this Spirit are poured on one part of Oil of Cloves or Carraway Seeds,
+or of any ponderous Oil of vegetable or animal Substances, or Oil of
+Turpentine thicken'd with a little Balsam of Sulphur, and the Liquors
+grow so very hot in mixing, as presently to send up a burning Flame;
+does not this very great and sudden Heat argue that the two Liquors mix
+with violence, and that their Parts in mixing run towards one another
+with an accelerated Motion, and clash with the greatest Force? And is it
+not for the same reason that well rectified Spirit of Wine poured on the
+same compound Spirit flashes; and that the _Pulvis fulminans_, composed
+of Sulphur, Nitre, and Salt of Tartar, goes off with a more sudden and
+violent Explosion than Gun-powder, the acid Spirits of the Sulphur and
+Nitre rushing towards one another, and towards the Salt of Tartar, with
+so great a violence, as by the shock to turn the whole at once into
+Vapour and Flame? Where the Dissolution is slow, it makes a slow
+Ebullition and a gentle Heat; and where it is quicker, it makes a
+greater Ebullition with more heat; and where it is done at once, the
+Ebullition is contracted into a sudden Blast or violent Explosion, with
+a heat equal to that of Fire and Flame. So when a Drachm of the
+above-mention'd compound Spirit of Nitre was poured upon half a Drachm
+of Oil of Carraway Seeds _in vacuo_, the Mixture immediately made a
+flash like Gun-powder, and burst the exhausted Receiver, which was a
+Glass six Inches wide, and eight Inches deep. And even the gross Body of
+Sulphur powder'd, and with an equal weight of Iron Filings and a little
+Water made into Paste, acts upon the Iron, and in five or six hours
+grows too hot to be touch'd, and emits a Flame. And by these Experiments
+compared with the great quantity of Sulphur with which the Earth
+abounds, and the warmth of the interior Parts of the Earth, and hot
+Springs, and burning Mountains, and with Damps, mineral Coruscations,
+Earthquakes, hot suffocating Exhalations, Hurricanes, and Spouts; we may
+learn that sulphureous Steams abound in the Bowels of the Earth and
+ferment with Minerals, and sometimes take fire with a sudden Coruscation
+and Explosion; and if pent up in subterraneous Caverns, burst the
+Caverns with a great shaking of the Earth, as in springing of a Mine.
+And then the Vapour generated by the Explosion, expiring through the
+Pores of the Earth, feels hot and suffocates, and makes Tempests and
+Hurricanes, and sometimes causes the Land to slide, or the Sea to boil,
+and carries up the Water thereof in Drops, which by their weight fall
+down again in Spouts. Also some sulphureous Steams, at all times when
+the Earth is dry, ascending into the Air, ferment there with nitrous
+Acids, and sometimes taking fire cause Lightning and Thunder, and fiery
+Meteors. For the Air abounds with acid Vapours fit to promote
+Fermentations, as appears by the rusting of Iron and Copper in it, the
+kindling of Fire by blowing, and the beating of the Heart by means of
+Respiration. Now the above-mention'd Motions are so great and violent as
+to shew that in Fermentations the Particles of Bodies which almost rest,
+are put into new Motions by a very potent Principle, which acts upon
+them only when they approach one another, and causes them to meet and
+clash with great violence, and grow hot with the motion, and dash one
+another into pieces, and vanish into Air, and Vapour, and Flame.
+
+When Salt of Tartar _per deliquium_, being poured into the Solution of
+any Metal, precipitates the Metal and makes it fall down to the bottom
+of the Liquor in the form of Mud: Does not this argue that the acid
+Particles are attracted more strongly by the Salt of Tartar than by the
+Metal, and by the stronger Attraction go from the Metal to the Salt of
+Tartar? And so when a Solution of Iron in _Aqua fortis_ dissolves the
+_Lapis Calaminaris_, and lets go the Iron, or a Solution of Copper
+dissolves Iron immersed in it and lets go the Copper, or a Solution of
+Silver dissolves Copper and lets go the Silver, or a Solution of Mercury
+in _Aqua fortis_ being poured upon Iron, Copper, Tin, or Lead, dissolves
+the Metal and lets go the Mercury; does not this argue that the acid
+Particles of the _Aqua fortis_ are attracted more strongly by the _Lapis
+Calaminaris_ than by Iron, and more strongly by Iron than by Copper, and
+more strongly by Copper than by Silver, and more strongly by Iron,
+Copper, Tin, and Lead, than by Mercury? And is it not for the same
+reason that Iron requires more _Aqua fortis_ to dissolve it than Copper,
+and Copper more than the other Metals; and that of all Metals, Iron is
+dissolved most easily, and is most apt to rust; and next after Iron,
+Copper?
+
+When Oil of Vitriol is mix'd with a little Water, or is run _per
+deliquium_, and in Distillation the Water ascends difficultly, and
+brings over with it some part of the Oil of Vitriol in the form of
+Spirit of Vitriol, and this Spirit being poured upon Iron, Copper, or
+Salt of Tartar, unites with the Body and lets go the Water; doth not
+this shew that the acid Spirit is attracted by the Water, and more
+attracted by the fix'd Body than by the Water, and therefore lets go the
+Water to close with the fix'd Body? And is it not for the same reason
+that the Water and acid Spirits which are mix'd together in Vinegar,
+_Aqua fortis_, and Spirit of Salt, cohere and rise together in
+Distillation; but if the _Menstruum_ be poured on Salt of Tartar, or on
+Lead, or Iron, or any fix'd Body which it can dissolve, the Acid by a
+stronger Attraction adheres to the Body, and lets go the Water? And is
+it not also from a mutual Attraction that the Spirits of Soot and
+Sea-Salt unite and compose the Particles of Sal-armoniac, which are less
+volatile than before, because grosser and freer from Water; and that the
+Particles of Sal-armoniac in Sublimation carry up the Particles of
+Antimony, which will not sublime alone; and that the Particles of
+Mercury uniting with the acid Particles of Spirit of Salt compose
+Mercury sublimate, and with the Particles of Sulphur, compose Cinnaber;
+and that the Particles of Spirit of Wine and Spirit of Urine well
+rectified unite, and letting go the Water which dissolved them, compose
+a consistent Body; and that in subliming Cinnaber from Salt of Tartar,
+or from quick Lime, the Sulphur by a stronger Attraction of the Salt or
+Lime lets go the Mercury, and stays with the fix'd Body; and that when
+Mercury sublimate is sublimed from Antimony, or from Regulus of
+Antimony, the Spirit of Salt lets go the Mercury, and unites with the
+antimonial metal which attracts it more strongly, and stays with it till
+the Heat be great enough to make them both ascend together, and then
+carries up the Metal with it in the form of a very fusible Salt, called
+Butter of Antimony, although the Spirit of Salt alone be almost as
+volatile as Water, and the Antimony alone as fix'd as Lead?
+
+When _Aqua fortis_ dissolves Silver and not Gold, and _Aqua regia_
+dissolves Gold and not Silver, may it not be said that _Aqua fortis_ is
+subtil enough to penetrate Gold as well as Silver, but wants the
+attractive Force to give it Entrance; and that _Aqua regia_ is subtil
+enough to penetrate Silver as well as Gold, but wants the attractive
+Force to give it Entrance? For _Aqua regia_ is nothing else than _Aqua
+fortis_ mix'd with some Spirit of Salt, or with Sal-armoniac; and even
+common Salt dissolved in _Aqua fortis_, enables the _Menstruum_ to
+dissolve Gold, though the Salt be a gross Body. When therefore Spirit of
+Salt precipitates Silver out of _Aqua fortis_, is it not done by
+attracting and mixing with the _Aqua fortis_, and not attracting, or
+perhaps repelling Silver? And when Water precipitates Antimony out of
+the Sublimate of Antimony and Sal-armoniac, or out of Butter of
+Antimony, is it not done by its dissolving, mixing with, and weakening
+the Sal-armoniac or Spirit of Salt, and its not attracting, or perhaps
+repelling the Antimony? And is it not for want of an attractive virtue
+between the Parts of Water and Oil, of Quick-silver and Antimony, of
+Lead and Iron, that these Substances do not mix; and by a weak
+Attraction, that Quick-silver and Copper mix difficultly; and from a
+strong one, that Quick-silver and Tin, Antimony and Iron, Water and
+Salts, mix readily? And in general, is it not from the same Principle
+that Heat congregates homogeneal Bodies, and separates heterogeneal
+ones?
+
+When Arsenick with Soap gives a Regulus, and with Mercury sublimate a
+volatile fusible Salt, like Butter of Antimony, doth not this shew that
+Arsenick, which is a Substance totally volatile, is compounded of fix'd
+and volatile Parts, strongly cohering by a mutual Attraction, so that
+the volatile will not ascend without carrying up the fixed? And so, when
+an equal weight of Spirit of Wine and Oil of Vitriol are digested
+together, and in Distillation yield two fragrant and volatile Spirits
+which will not mix with one another, and a fix'd black Earth remains
+behind; doth not this shew that Oil of Vitriol is composed of volatile
+and fix'd Parts strongly united by Attraction, so as to ascend together
+in form of a volatile, acid, fluid Salt, until the Spirit of Wine
+attracts and separates the volatile Parts from the fixed? And therefore,
+since Oil of Sulphur _per Campanam_ is of the same Nature with Oil of
+Vitriol, may it not be inferred, that Sulphur is also a mixture of
+volatile and fix'd Parts so strongly cohering by Attraction, as to
+ascend together in Sublimation. By dissolving Flowers of Sulphur in Oil
+of Turpentine, and distilling the Solution, it is found that Sulphur is
+composed of an inflamable thick Oil or fat Bitumen, an acid Salt, a very
+fix'd Earth, and a little Metal. The three first were found not much
+unequal to one another, the fourth in so small a quantity as scarce to
+be worth considering. The acid Salt dissolved in Water, is the same with
+Oil of Sulphur _per Campanam_, and abounding much in the Bowels of the
+Earth, and particularly in Markasites, unites it self to the other
+Ingredients of the Markasite, which are, Bitumen, Iron, Copper, and
+Earth, and with them compounds Allum, Vitriol, and Sulphur. With the
+Earth alone it compounds Allum; with the Metal alone, or Metal and
+Earth together, it compounds Vitriol; and with the Bitumen and Earth it
+compounds Sulphur. Whence it comes to pass that Markasites abound with
+those three Minerals. And is it not from the mutual Attraction of the
+Ingredients that they stick together for compounding these Minerals, and
+that the Bitumen carries up the other Ingredients of the Sulphur, which
+without it would not sublime? And the same Question may be put
+concerning all, or almost all the gross Bodies in Nature. For all the
+Parts of Animals and Vegetables are composed of Substances volatile and
+fix'd, fluid and solid, as appears by their Analysis; and so are Salts
+and Minerals, so far as Chymists have been hitherto able to examine
+their Composition.
+
+When Mercury sublimate is re-sublimed with fresh Mercury, and becomes
+_Mercurius Dulcis_, which is a white tasteless Earth scarce dissolvable
+in Water, and _Mercurius Dulcis_ re-sublimed with Spirit of Salt returns
+into Mercury sublimate; and when Metals corroded with a little acid turn
+into rust, which is an Earth tasteless and indissolvable in Water, and
+this Earth imbibed with more acid becomes a metallick Salt; and when
+some Stones, as Spar of Lead, dissolved in proper _Menstruums_ become
+Salts; do not these things shew that Salts are dry Earth and watry Acid
+united by Attraction, and that the Earth will not become a Salt without
+so much acid as makes it dissolvable in Water? Do not the sharp and
+pungent Tastes of Acids arise from the strong Attraction whereby the
+acid Particles rush upon and agitate the Particles of the Tongue? And
+when Metals are dissolved in acid _Menstruums_, and the Acids in
+conjunction with the Metal act after a different manner, so that the
+Compound has a different Taste much milder than before, and sometimes a
+sweet one; is it not because the Acids adhere to the metallick
+Particles, and thereby lose much of their Activity? And if the Acid be
+in too small a Proportion to make the Compound dissolvable in Water,
+will it not by adhering strongly to the Metal become unactive and lose
+its Taste, and the Compound be a tasteless Earth? For such things as are
+not dissolvable by the Moisture of the Tongue, act not upon the Taste.
+
+As Gravity makes the Sea flow round the denser and weightier Parts of
+the Globe of the Earth, so the Attraction may make the watry Acid flow
+round the denser and compacter Particles of Earth for composing the
+Particles of Salt. For otherwise the Acid would not do the Office of a
+Medium between the Earth and common Water, for making Salts dissolvable
+in the Water; nor would Salt of Tartar readily draw off the Acid from
+dissolved Metals, nor Metals the Acid from Mercury. Now, as in the great
+Globe of the Earth and Sea, the densest Bodies by their Gravity sink
+down in Water, and always endeavour to go towards the Center of the
+Globe; so in Particles of Salt, the densest Matter may always endeavour
+to approach the Center of the Particle: So that a Particle of Salt may
+be compared to a Chaos; being dense, hard, dry, and earthy in the
+Center; and rare, soft, moist, and watry in the Circumference. And
+hence it seems to be that Salts are of a lasting Nature, being scarce
+destroy'd, unless by drawing away their watry Parts by violence, or by
+letting them soak into the Pores of the central Earth by a gentle Heat
+in Putrefaction, until the Earth be dissolved by the Water, and
+separated into smaller Particles, which by reason of their Smallness
+make the rotten Compound appear of a black Colour. Hence also it may be,
+that the Parts of Animals and Vegetables preserve their several Forms,
+and assimilate their Nourishment; the soft and moist Nourishment easily
+changing its Texture by a gentle Heat and Motion, till it becomes like
+the dense, hard, dry, and durable Earth in the Center of each Particle.
+But when the Nourishment grows unfit to be assimilated, or the central
+Earth grows too feeble to assimilate it, the Motion ends in Confusion,
+Putrefaction, and Death.
+
+If a very small quantity of any Salt or Vitriol be dissolved in a great
+quantity of Water, the Particles of the Salt or Vitriol will not sink to
+the bottom, though they be heavier in Specie than the Water, but will
+evenly diffuse themselves into all the Water, so as to make it as saline
+at the top as at the bottom. And does not this imply that the Parts of
+the Salt or Vitriol recede from one another, and endeavour to expand
+themselves, and get as far asunder as the quantity of Water in which
+they float, will allow? And does not this Endeavour imply that they have
+a repulsive Force by which they fly from one another, or at least, that
+they attract the Water more strongly than they do one another? For as
+all things ascend in Water which are less attracted than Water, by the
+gravitating Power of the Earth; so all the Particles of Salt which float
+in Water, and are less attracted than Water by any one Particle of Salt,
+must recede from that Particle, and give way to the more attracted
+Water.
+
+When any saline Liquor is evaporated to a Cuticle and let cool, the Salt
+concretes in regular Figures; which argues, that the Particles of the
+Salt before they concreted, floated in the Liquor at equal distances in
+rank and file, and by consequence that they acted upon one another by
+some Power which at equal distances is equal, at unequal distances
+unequal. For by such a Power they will range themselves uniformly, and
+without it they will float irregularly, and come together as
+irregularly. And since the Particles of Island-Crystal act all the same
+way upon the Rays of Light for causing the unusual Refraction, may it
+not be supposed that in the Formation of this Crystal, the Particles not
+only ranged themselves in rank and file for concreting in regular
+Figures, but also by some kind of polar Virtue turned their homogeneal
+Sides the same way.
+
+The Parts of all homogeneal hard Bodies which fully touch one another,
+stick together very strongly. And for explaining how this may be, some
+have invented hooked Atoms, which is begging the Question; and others
+tell us that Bodies are glued together by rest, that is, by an occult
+Quality, or rather by nothing; and others, that they stick together by
+conspiring Motions, that is, by relative rest amongst themselves. I had
+rather infer from their Cohesion, that their Particles attract one
+another by some Force, which in immediate Contact is exceeding strong,
+at small distances performs the chymical Operations above-mention'd, and
+reaches not far from the Particles with any sensible Effect.
+
+All Bodies seem to be composed of hard Particles: For otherwise Fluids
+would not congeal; as Water, Oils, Vinegar, and Spirit or Oil of Vitriol
+do by freezing; Mercury by Fumes of Lead; Spirit of Nitre and Mercury,
+by dissolving the Mercury and evaporating the Flegm; Spirit of Wine and
+Spirit of Urine, by deflegming and mixing them; and Spirit of Urine and
+Spirit of Salt, by subliming them together to make Sal-armoniac. Even
+the Rays of Light seem to be hard Bodies; for otherwise they would not
+retain different Properties in their different Sides. And therefore
+Hardness may be reckon'd the Property of all uncompounded Matter. At
+least, this seems to be as evident as the universal Impenetrability of
+Matter. For all Bodies, so far as Experience reaches, are either hard,
+or may be harden'd; and we have no other Evidence of universal
+Impenetrability, besides a large Experience without an experimental
+Exception. Now if compound Bodies are so very hard as we find some of
+them to be, and yet are very porous, and consist of Parts which are only
+laid together; the simple Particles which are void of Pores, and were
+never yet divided, must be much harder. For such hard Particles being
+heaped up together, can scarce touch one another in more than a few
+Points, and therefore must be separable by much less Force than is
+requisite to break a solid Particle, whose Parts touch in all the Space
+between them, without any Pores or Interstices to weaken their Cohesion.
+And how such very hard Particles which are only laid together and touch
+only in a few Points, can stick together, and that so firmly as they do,
+without the assistance of something which causes them to be attracted or
+press'd towards one another, is very difficult to conceive.
+
+The same thing I infer also from the cohering of two polish'd Marbles
+_in vacuo_, and from the standing of Quick-silver in the Barometer at
+the height of 50, 60 or 70 Inches, or above, when ever it is well-purged
+of Air and carefully poured in, so that its Parts be every where
+contiguous both to one another and to the Glass. The Atmosphere by its
+weight presses the Quick-silver into the Glass, to the height of 29 or
+30 Inches. And some other Agent raises it higher, not by pressing it
+into the Glass, but by making its Parts stick to the Glass, and to one
+another. For upon any discontinuation of Parts, made either by Bubbles
+or by shaking the Glass, the whole Mercury falls down to the height of
+29 or 30 Inches.
+
+And of the same kind with these Experiments are those that follow. If
+two plane polish'd Plates of Glass (suppose two pieces of a polish'd
+Looking-glass) be laid together, so that their sides be parallel and at
+a very small distance from one another, and then their lower edges be
+dipped into Water, the Water will rise up between them. And the less
+the distance of the Glasses is, the greater will be the height to which
+the Water will rise. If the distance be about the hundredth part of an
+Inch, the Water will rise to the height of about an Inch; and if the
+distance be greater or less in any Proportion, the height will be
+reciprocally proportional to the distance very nearly. For the
+attractive Force of the Glasses is the same, whether the distance
+between them be greater or less; and the weight of the Water drawn up is
+the same, if the height of it be reciprocally proportional to the
+distance of the Glasses. And in like manner, Water ascends between two
+Marbles polish'd plane, when their polish'd sides are parallel, and at a
+very little distance from one another, And if slender Pipes of Glass be
+dipped at one end into stagnating Water, the Water will rise up within
+the Pipe, and the height to which it rises will be reciprocally
+proportional to the Diameter of the Cavity of the Pipe, and will equal
+the height to which it rises between two Planes of Glass, if the
+Semi-diameter of the Cavity of the Pipe be equal to the distance between
+the Planes, or thereabouts. And these Experiments succeed after the same
+manner _in vacuo_ as in the open Air, (as hath been tried before the
+Royal Society,) and therefore are not influenced by the Weight or
+Pressure of the Atmosphere.
+
+And if a large Pipe of Glass be filled with sifted Ashes well pressed
+together in the Glass, and one end of the Pipe be dipped into stagnating
+Water, the Water will rise up slowly in the Ashes, so as in the space
+of a Week or Fortnight to reach up within the Glass, to the height of 30
+or 40 Inches above the stagnating Water. And the Water rises up to this
+height by the Action only of those Particles of the Ashes which are upon
+the Surface of the elevated Water; the Particles which are within the
+Water, attracting or repelling it as much downwards as upwards. And
+therefore the Action of the Particles is very strong. But the Particles
+of the Ashes being not so dense and close together as those of Glass,
+their Action is not so strong as that of Glass, which keeps Quick-silver
+suspended to the height of 60 or 70 Inches, and therefore acts with a
+Force which would keep Water suspended to the height of above 60 Feet.
+
+By the same Principle, a Sponge sucks in Water, and the Glands in the
+Bodies of Animals, according to their several Natures and Dispositions,
+suck in various Juices from the Blood.
+
+If two plane polish'd Plates of Glass three or four Inches broad, and
+twenty or twenty five long, be laid one of them parallel to the Horizon,
+the other upon the first, so as at one of their ends to touch one
+another, and contain an Angle of about 10 or 15 Minutes, and the same be
+first moisten'd on their inward sides with a clean Cloth dipp'd into Oil
+of Oranges or Spirit of Turpentine, and a Drop or two of the Oil or
+Spirit be let fall upon the lower Glass at the other; so soon as the
+upper Glass is laid down upon the lower, so as to touch it at one end as
+above, and to touch the Drop at the other end, making with the lower
+Glass an Angle of about 10 or 15 Minutes; the Drop will begin to move
+towards the Concourse of the Glasses, and will continue to move with an
+accelerated Motion, till it arrives at that Concourse of the Glasses.
+For the two Glasses attract the Drop, and make it run that way towards
+which the Attractions incline. And if when the Drop is in motion you
+lift up that end of the Glasses where they meet, and towards which the
+Drop moves, the Drop will ascend between the Glasses, and therefore is
+attracted. And as you lift up the Glasses more and more, the Drop will
+ascend slower and slower, and at length rest, being then carried
+downward by its Weight, as much as upwards by the Attraction. And by
+this means you may know the Force by which the Drop is attracted at all
+distances from the Concourse of the Glasses.
+
+Now by some Experiments of this kind, (made by Mr. _Hauksbee_) it has
+been found that the Attraction is almost reciprocally in a duplicate
+Proportion of the distance of the middle of the Drop from the Concourse
+of the Glasses, _viz._ reciprocally in a simple Proportion, by reason of
+the spreading of the Drop, and its touching each Glass in a larger
+Surface; and again reciprocally in a simple Proportion, by reason of the
+Attractions growing stronger within the same quantity of attracting
+Surface. The Attraction therefore within the same quantity of attracting
+Surface, is reciprocally as the distance between the Glasses. And
+therefore where the distance is exceeding small, the Attraction must be
+exceeding great. By the Table in the second Part of the second Book,
+wherein the thicknesses of colour'd Plates of Water between two Glasses
+are set down, the thickness of the Plate where it appears very black, is
+three eighths of the ten hundred thousandth part of an Inch. And where
+the Oil of Oranges between the Glasses is of this thickness, the
+Attraction collected by the foregoing Rule, seems to be so strong, as
+within a Circle of an Inch in diameter, to suffice to hold up a Weight
+equal to that of a Cylinder of Water of an Inch in diameter, and two or
+three Furlongs in length. And where it is of a less thickness the
+Attraction may be proportionally greater, and continue to increase,
+until the thickness do not exceed that of a single Particle of the Oil.
+There are therefore Agents in Nature able to make the Particles of
+Bodies stick together by very strong Attractions. And it is the Business
+of experimental Philosophy to find them out.
+
+Now the smallest Particles of Matter may cohere by the strongest
+Attractions, and compose bigger Particles of weaker Virtue; and many of
+these may cohere and compose bigger Particles whose Virtue is still
+weaker, and so on for divers Successions, until the Progression end in
+the biggest Particles on which the Operations in Chymistry, and the
+Colours of natural Bodies depend, and which by cohering compose Bodies
+of a sensible Magnitude. If the Body is compact, and bends or yields
+inward to Pression without any sliding of its Parts, it is hard and
+elastick, returning to its Figure with a Force rising from the mutual
+Attraction of its Parts. If the Parts slide upon one another, the Body
+is malleable or soft. If they slip easily, and are of a fit Size to be
+agitated by Heat, and the Heat is big enough to keep them in Agitation,
+the Body is fluid; and if it be apt to stick to things, it is humid; and
+the Drops of every fluid affect a round Figure by the mutual Attraction
+of their Parts, as the Globe of the Earth and Sea affects a round Figure
+by the mutual Attraction of its Parts by Gravity.
+
+Since Metals dissolved in Acids attract but a small quantity of the
+Acid, their attractive Force can reach but to a small distance from
+them. And as in Algebra, where affirmative Quantities vanish and cease,
+there negative ones begin; so in Mechanicks, where Attraction ceases,
+there a repulsive Virtue ought to succeed. And that there is such a
+Virtue, seems to follow from the Reflexions and Inflexions of the Rays
+of Light. For the Rays are repelled by Bodies in both these Cases,
+without the immediate Contact of the reflecting or inflecting Body. It
+seems also to follow from the Emission of Light; the Ray so soon as it
+is shaken off from a shining Body by the vibrating Motion of the Parts
+of the Body, and gets beyond the reach of Attraction, being driven away
+with exceeding great Velocity. For that Force which is sufficient to
+turn it back in Reflexion, may be sufficient to emit it. It seems also
+to follow from the Production of Air and Vapour. The Particles when they
+are shaken off from Bodies by Heat or Fermentation, so soon as they are
+beyond the reach of the Attraction of the Body, receding from it, and
+also from one another with great Strength, and keeping at a distance,
+so as sometimes to take up above a Million of Times more space than they
+did before in the form of a dense Body. Which vast Contraction and
+Expansion seems unintelligible, by feigning the Particles of Air to be
+springy and ramous, or rolled up like Hoops, or by any other means than
+a repulsive Power. The Particles of Fluids which do not cohere too
+strongly, and are of such a Smallness as renders them most susceptible
+of those Agitations which keep Liquors in a Fluor, are most easily
+separated and rarified into Vapour, and in the Language of the Chymists,
+they are volatile, rarifying with an easy Heat, and condensing with
+Cold. But those which are grosser, and so less susceptible of Agitation,
+or cohere by a stronger Attraction, are not separated without a stronger
+Heat, or perhaps not without Fermentation. And these last are the Bodies
+which Chymists call fix'd, and being rarified by Fermentation, become
+true permanent Air; those Particles receding from one another with the
+greatest Force, and being most difficultly brought together, which upon
+Contact cohere most strongly. And because the Particles of permanent Air
+are grosser, and arise from denser Substances than those of Vapours,
+thence it is that true Air is more ponderous than Vapour, and that a
+moist Atmosphere is lighter than a dry one, quantity for quantity. From
+the same repelling Power it seems to be that Flies walk upon the Water
+without wetting their Feet; and that the Object-glasses of long
+Telescopes lie upon one another without touching; and that dry Powders
+are difficultly made to touch one another so as to stick together,
+unless by melting them, or wetting them with Water, which by exhaling
+may bring them together; and that two polish'd Marbles, which by
+immediate Contact stick together, are difficultly brought so close
+together as to stick.
+
+And thus Nature will be very conformable to her self and very simple,
+performing all the great Motions of the heavenly Bodies by the
+Attraction of Gravity which intercedes those Bodies, and almost all the
+small ones of their Particles by some other attractive and repelling
+Powers which intercede the Particles. The _Vis inertiæ_ is a passive
+Principle by which Bodies persist in their Motion or Rest, receive
+Motion in proportion to the Force impressing it, and resist as much as
+they are resisted. By this Principle alone there never could have been
+any Motion in the World. Some other Principle was necessary for putting
+Bodies into Motion; and now they are in Motion, some other Principle is
+necessary for conserving the Motion. For from the various Composition of
+two Motions, 'tis very certain that there is not always the same
+quantity of Motion in the World. For if two Globes joined by a slender
+Rod, revolve about their common Center of Gravity with an uniform
+Motion, while that Center moves on uniformly in a right Line drawn in
+the Plane of their circular Motion; the Sum of the Motions of the two
+Globes, as often as the Globes are in the right Line described by their
+common Center of Gravity, will be bigger than the Sum of their Motions,
+when they are in a Line perpendicular to that right Line. By this
+Instance it appears that Motion may be got or lost. But by reason of the
+Tenacity of Fluids, and Attrition of their Parts, and the Weakness of
+Elasticity in Solids, Motion is much more apt to be lost than got, and
+is always upon the Decay. For Bodies which are either absolutely hard,
+or so soft as to be void of Elasticity, will not rebound from one
+another. Impenetrability makes them only stop. If two equal Bodies meet
+directly _in vacuo_, they will by the Laws of Motion stop where they
+meet, and lose all their Motion, and remain in rest, unless they be
+elastick, and receive new Motion from their Spring. If they have so much
+Elasticity as suffices to make them re-bound with a quarter, or half, or
+three quarters of the Force with which they come together, they will
+lose three quarters, or half, or a quarter of their Motion. And this may
+be try'd, by letting two equal Pendulums fall against one another from
+equal heights. If the Pendulums be of Lead or soft Clay, they will lose
+all or almost all their Motions: If of elastick Bodies they will lose
+all but what they recover from their Elasticity. If it be said, that
+they can lose no Motion but what they communicate to other Bodies, the
+consequence is, that _in vacuo_ they can lose no Motion, but when they
+meet they must go on and penetrate one another's Dimensions. If three
+equal round Vessels be filled, the one with Water, the other with Oil,
+the third with molten Pitch, and the Liquors be stirred about alike to
+give them a vortical Motion; the Pitch by its Tenacity will lose its
+Motion quickly, the Oil being less tenacious will keep it longer, and
+the Water being less tenacious will keep it longest, but yet will lose
+it in a short time. Whence it is easy to understand, that if many
+contiguous Vortices of molten Pitch were each of them as large as those
+which some suppose to revolve about the Sun and fix'd Stars, yet these
+and all their Parts would, by their Tenacity and Stiffness, communicate
+their Motion to one another till they all rested among themselves.
+Vortices of Oil or Water, or some fluider Matter, might continue longer
+in Motion; but unless the Matter were void of all Tenacity and Attrition
+of Parts, and Communication of Motion, (which is not to be supposed,)
+the Motion would constantly decay. Seeing therefore the variety of
+Motion which we find in the World is always decreasing, there is a
+necessity of conserving and recruiting it by active Principles, such as
+are the cause of Gravity, by which Planets and Comets keep their Motions
+in their Orbs, and Bodies acquire great Motion in falling; and the cause
+of Fermentation, by which the Heart and Blood of Animals are kept in
+perpetual Motion and Heat; the inward Parts of the Earth are constantly
+warm'd, and in some places grow very hot; Bodies burn and shine,
+Mountains take fire, the Caverns of the Earth are blown up, and the Sun
+continues violently hot and lucid, and warms all things by his Light.
+For we meet with very little Motion in the World, besides what is owing
+to these active Principles. And if it were not for these Principles, the
+Bodies of the Earth, Planets, Comets, Sun, and all things in them,
+would grow cold and freeze, and become inactive Masses; and all
+Putrefaction, Generation, Vegetation and Life would cease, and the
+Planets and Comets would not remain in their Orbs.
+
+All these things being consider'd, it seems probable to me, that God in
+the Beginning form'd Matter in solid, massy, hard, impenetrable,
+moveable Particles, of such Sizes and Figures, and with such other
+Properties, and in such Proportion to Space, as most conduced to the End
+for which he form'd them; and that these primitive Particles being
+Solids, are incomparably harder than any porous Bodies compounded of
+them; even so very hard, as never to wear or break in pieces; no
+ordinary Power being able to divide what God himself made one in the
+first Creation. While the Particles continue entire, they may compose
+Bodies of one and the same Nature and Texture in all Ages: But should
+they wear away, or break in pieces, the Nature of Things depending on
+them, would be changed. Water and Earth, composed of old worn Particles
+and Fragments of Particles, would not be of the same Nature and Texture
+now, with Water and Earth composed of entire Particles in the Beginning.
+And therefore, that Nature may be lasting, the Changes of corporeal
+Things are to be placed only in the various Separations and new
+Associations and Motions of these permanent Particles; compound Bodies
+being apt to break, not in the midst of solid Particles, but where those
+Particles are laid together, and only touch in a few Points.
+
+It seems to me farther, that these Particles have not only a _Vis
+inertiæ_, accompanied with such passive Laws of Motion as naturally
+result from that Force, but also that they are moved by certain active
+Principles, such as is that of Gravity, and that which causes
+Fermentation, and the Cohesion of Bodies. These Principles I consider,
+not as occult Qualities, supposed to result from the specifick Forms of
+Things, but as general Laws of Nature, by which the Things themselves
+are form'd; their Truth appearing to us by Phænomena, though their
+Causes be not yet discover'd. For these are manifest Qualities, and
+their Causes only are occult. And the _Aristotelians_ gave the Name of
+occult Qualities, not to manifest Qualities, but to such Qualities only
+as they supposed to lie hid in Bodies, and to be the unknown Causes of
+manifest Effects: Such as would be the Causes of Gravity, and of
+magnetick and electrick Attractions, and of Fermentations, if we should
+suppose that these Forces or Actions arose from Qualities unknown to us,
+and uncapable of being discovered and made manifest. Such occult
+Qualities put a stop to the Improvement of natural Philosophy, and
+therefore of late Years have been rejected. To tell us that every
+Species of Things is endow'd with an occult specifick Quality by which
+it acts and produces manifest Effects, is to tell us nothing: But to
+derive two or three general Principles of Motion from Phænomena, and
+afterwards to tell us how the Properties and Actions of all corporeal
+Things follow from those manifest Principles, would be a very great step
+in Philosophy, though the Causes of those Principles were not yet
+discover'd: And therefore I scruple not to propose the Principles of
+Motion above-mention'd, they being of very general Extent, and leave
+their Causes to be found out.
+
+Now by the help of these Principles, all material Things seem to have
+been composed of the hard and solid Particles above-mention'd, variously
+associated in the first Creation by the Counsel of an intelligent Agent.
+For it became him who created them to set them in order. And if he did
+so, it's unphilosophical to seek for any other Origin of the World, or
+to pretend that it might arise out of a Chaos by the mere Laws of
+Nature; though being once form'd, it may continue by those Laws for many
+Ages. For while Comets move in very excentrick Orbs in all manner of
+Positions, blind Fate could never make all the Planets move one and the
+same way in Orbs concentrick, some inconsiderable Irregularities
+excepted, which may have risen from the mutual Actions of Comets and
+Planets upon one another, and which will be apt to increase, till this
+System wants a Reformation. Such a wonderful Uniformity in the Planetary
+System must be allowed the Effect of Choice. And so must the Uniformity
+in the Bodies of Animals, they having generally a right and a left side
+shaped alike, and on either side of their Bodies two Legs behind, and
+either two Arms, or two Legs, or two Wings before upon their Shoulders,
+and between their Shoulders a Neck running down into a Back-bone, and a
+Head upon it; and in the Head two Ears, two Eyes, a Nose, a Mouth, and
+a Tongue, alike situated. Also the first Contrivance of those very
+artificial Parts of Animals, the Eyes, Ears, Brain, Muscles, Heart,
+Lungs, Midriff, Glands, Larynx, Hands, Wings, swimming Bladders, natural
+Spectacles, and other Organs of Sense and Motion; and the Instinct of
+Brutes and Insects, can be the effect of nothing else than the Wisdom
+and Skill of a powerful ever-living Agent, who being in all Places, is
+more able by his Will to move the Bodies within his boundless uniform
+Sensorium, and thereby to form and reform the Parts of the Universe,
+than we are by our Will to move the Parts of our own Bodies. And yet we
+are not to consider the World as the Body of God, or the several Parts
+thereof, as the Parts of God. He is an uniform Being, void of Organs,
+Members or Parts, and they are his Creatures subordinate to him, and
+subservient to his Will; and he is no more the Soul of them, than the
+Soul of Man is the Soul of the Species of Things carried through the
+Organs of Sense into the place of its Sensation, where it perceives them
+by means of its immediate Presence, without the Intervention of any
+third thing. The Organs of Sense are not for enabling the Soul to
+perceive the Species of Things in its Sensorium, but only for conveying
+them thither; and God has no need of such Organs, he being every where
+present to the Things themselves. And since Space is divisible _in
+infinitum_, and Matter is not necessarily in all places, it may be also
+allow'd that God is able to create Particles of Matter of several Sizes
+and Figures, and in several Proportions to Space, and perhaps of
+different Densities and Forces, and thereby to vary the Laws of Nature,
+and make Worlds of several sorts in several Parts of the Universe. At
+least, I see nothing of Contradiction in all this.
+
+As in Mathematicks, so in Natural Philosophy, the Investigation of
+difficult Things by the Method of Analysis, ought ever to precede the
+Method of Composition. This Analysis consists in making Experiments and
+Observations, and in drawing general Conclusions from them by Induction,
+and admitting of no Objections against the Conclusions, but such as are
+taken from Experiments, or other certain Truths. For Hypotheses are not
+to be regarded in experimental Philosophy. And although the arguing from
+Experiments and Observations by Induction be no Demonstration of general
+Conclusions; yet it is the best way of arguing which the Nature of
+Things admits of, and may be looked upon as so much the stronger, by how
+much the Induction is more general. And if no Exception occur from
+Phænomena, the Conclusion may be pronounced generally. But if at any
+time afterwards any Exception shall occur from Experiments, it may then
+begin to be pronounced with such Exceptions as occur. By this way of
+Analysis we may proceed from Compounds to Ingredients, and from Motions
+to the Forces producing them; and in general, from Effects to their
+Causes, and from particular Causes to more general ones, till the
+Argument end in the most general. This is the Method of Analysis: And
+the Synthesis consists in assuming the Causes discover'd, and
+establish'd as Principles, and by them explaining the Phænomena
+proceeding from them, and proving the Explanations.
+
+In the two first Books of these Opticks, I proceeded by this Analysis to
+discover and prove the original Differences of the Rays of Light in
+respect of Refrangibility, Reflexibility, and Colour, and their
+alternate Fits of easy Reflexion and easy Transmission, and the
+Properties of Bodies, both opake and pellucid, on which their Reflexions
+and Colours depend. And these Discoveries being proved, may be assumed
+in the Method of Composition for explaining the Phænomena arising from
+them: An Instance of which Method I gave in the End of the first Book.
+In this third Book I have only begun the Analysis of what remains to be
+discover'd about Light and its Effects upon the Frame of Nature, hinting
+several things about it, and leaving the Hints to be examin'd and
+improv'd by the farther Experiments and Observations of such as are
+inquisitive. And if natural Philosophy in all its Parts, by pursuing
+this Method, shall at length be perfected, the Bounds of Moral
+Philosophy will be also enlarged. For so far as we can know by natural
+Philosophy what is the first Cause, what Power he has over us, and what
+Benefits we receive from him, so far our Duty towards him, as well as
+that towards one another, will appear to us by the Light of Nature. And
+no doubt, if the Worship of false Gods had not blinded the Heathen,
+their moral Philosophy would have gone farther than to the four
+Cardinal Virtues; and instead of teaching the Transmigration of Souls,
+and to worship the Sun and Moon, and dead Heroes, they would have taught
+us to worship our true Author and Benefactor, as their Ancestors did
+under the Government of _Noah_ and his Sons before they corrupted
+themselves.
\ No newline at end of file
diff --git a/fluent-bit/lib/libbacktrace-8602fda/LICENSE b/fluent-bit/lib/libbacktrace-8602fda/LICENSE
new file mode 100644
index 000000000..097d2774e
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/LICENSE
@@ -0,0 +1,29 @@
+# Copyright (C) 2012-2016 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer. 
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.  
+    
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
diff --git a/fluent-bit/lib/libbacktrace-8602fda/Makefile.am b/fluent-bit/lib/libbacktrace-8602fda/Makefile.am
new file mode 100644
index 000000000..598e6cb5f
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/Makefile.am
@@ -0,0 +1,591 @@
+# Makefile.am -- Backtrace Makefile.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+ACLOCAL_AMFLAGS = -I config
+
+AM_CPPFLAGS =
+
+AM_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) $(PIC_FLAG)
+
+include_HEADERS = backtrace.h backtrace-supported.h
+
+lib_LTLIBRARIES = libbacktrace.la
+
+libbacktrace_la_SOURCES = \
+	backtrace.h \
+	atomic.c \
+	dwarf.c \
+	fileline.c \
+	internal.h \
+	posix.c \
+	print.c \
+	sort.c \
+	state.c
+
+BACKTRACE_FILES = \
+	backtrace.c \
+	simple.c \
+	nounwind.c
+
+FORMAT_FILES = \
+	elf.c \
+	macho.c \
+	pecoff.c \
+	unknown.c \
+	xcoff.c
+
+VIEW_FILES = \
+	read.c \
+	mmapio.c
+
+ALLOC_FILES = \
+	alloc.c \
+	mmap.c
+
+EXTRA_libbacktrace_la_SOURCES = \
+	$(BACKTRACE_FILES) \
+	$(FORMAT_FILES) \
+	$(VIEW_FILES) \
+	$(ALLOC_FILES)
+
+libbacktrace_la_LIBADD = \
+	$(BACKTRACE_FILE) \
+	$(FORMAT_FILE) \
+	$(VIEW_FILE) \
+	$(ALLOC_FILE)
+
+libbacktrace_la_DEPENDENCIES = $(libbacktrace_la_LIBADD)
+
+# Testsuite.
+
+# Add a test to this variable if you want it to be built as a program,
+# with SOURCES, etc.
+check_PROGRAMS =
+
+# Add a test to this variable if you want it to be run.
+TESTS =
+
+# Add a test to this variable if you want it to be built as a Makefile
+# target and run.
+MAKETESTS =
+
+# Add a test to this variable if you want it to be built as a program,
+# with SOURCES, etc., and run.
+BUILDTESTS =
+
+# Add a file to this variable if you want it to be built for testing.
+check_DATA =
+
+# Flags to use when compiling test programs.
+libbacktrace_TEST_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) -g
+
+if USE_DSYMUTIL
+
+%.dSYM: %
+	$(DSYMUTIL) $<
+
+endif USE_DSYMUTIL
+
+if NATIVE
+check_LTLIBRARIES = libbacktrace_alloc.la
+
+libbacktrace_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) read.lo alloc.lo
+
+libbacktrace_alloc_la_DEPENDENCIES = $(libbacktrace_alloc_la_LIBADD)
+
+check_LTLIBRARIES += libbacktrace_noformat.la
+
+libbacktrace_noformat_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_noformat_la_LIBADD = $(BACKTRACE_FILE) $(VIEW_FILE) $(ALLOC_FILE)
+
+libbacktrace_noformat_la_DEPENDENCIES = $(libbacktrace_noformat_la_LIBADD)
+
+if HAVE_ELF
+if HAVE_OBJCOPY_DEBUGLINK
+
+TEST_BUILD_ID_DIR=$(abs_builddir)/usr/lib/debug/.build-id/
+
+check_LTLIBRARIES += libbacktrace_elf_for_test.la
+
+libbacktrace_elf_for_test_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_elf_for_test_la_LIBADD = $(BACKTRACE_FILE) elf_for_test.lo \
+	$(VIEW_FILE) $(ALLOC_FILE)
+
+elf_for_test.c: elf.c
+	SEARCH='^#define SYSTEM_BUILD_ID_DIR.*$$'; \
+	REPLACE="#define SYSTEM_BUILD_ID_DIR \"$(TEST_BUILD_ID_DIR)\""; \
+	$(SED) "s%$$SEARCH%$$REPLACE%" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+endif HAVE_OBJCOPY_DEBUGLINK
+endif HAVE_ELF
+
+elf_%.c: elf.c
+	SEARCH='#error "Unknown BACKTRACE_ELF_SIZE"'; \
+	REPLACE='#undef BACKTRACE_ELF_SIZE\
+	#define BACKTRACE_ELF_SIZE'; \
+	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+xcoff_%.c: xcoff.c
+	SEARCH='#error "Unknown BACKTRACE_XCOFF_SIZE"'; \
+	REPLACE='#undef BACKTRACE_XCOFF_SIZE\
+	#define BACKTRACE_XCOFF_SIZE'; \
+	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+		$< \
+		> $@.tmp
+	mv $@.tmp $@
+
+test_elf_32_SOURCES = test_format.c testlib.c
+test_elf_32_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_elf_32_LDADD = libbacktrace_noformat.la elf_32.lo
+
+BUILDTESTS += test_elf_32
+
+test_elf_64_SOURCES = test_format.c testlib.c
+test_elf_64_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_elf_64_LDADD = libbacktrace_noformat.la elf_64.lo
+
+BUILDTESTS += test_elf_64
+
+test_macho_SOURCES = test_format.c testlib.c
+test_macho_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_macho_LDADD = libbacktrace_noformat.la macho.lo
+
+BUILDTESTS += test_macho
+
+test_xcoff_32_SOURCES = test_format.c testlib.c
+test_xcoff_32_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_xcoff_32_LDADD = libbacktrace_noformat.la xcoff_32.lo
+
+BUILDTESTS += test_xcoff_32
+
+test_xcoff_64_SOURCES = test_format.c testlib.c
+test_xcoff_64_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_xcoff_64_LDADD = libbacktrace_noformat.la xcoff_64.lo
+
+BUILDTESTS += test_xcoff_64
+
+test_pecoff_SOURCES = test_format.c testlib.c
+test_pecoff_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_pecoff_LDADD = libbacktrace_noformat.la pecoff.lo
+
+BUILDTESTS += test_pecoff
+
+test_unknown_SOURCES = test_format.c testlib.c
+test_unknown_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+test_unknown_LDADD = libbacktrace_noformat.la unknown.lo
+
+BUILDTESTS += test_unknown
+
+unittest_SOURCES = unittest.c testlib.c
+unittest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+unittest_LDADD = libbacktrace.la
+
+BUILDTESTS += unittest
+
+unittest_alloc_SOURCES = $(unittest_SOURCES)
+unittest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+unittest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += unittest_alloc
+
+check_LTLIBRARIES += libbacktrace_instrumented_alloc.la
+
+libbacktrace_instrumented_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+libbacktrace_instrumented_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) \
+	read.lo instrumented_alloc.lo
+
+libbacktrace_instrumented_alloc_la_DEPENDENCIES = \
+	$(libbacktrace_instrumented_alloc_la_LIBADD)
+
+instrumented_alloc.lo: alloc.c
+
+allocfail_SOURCES = allocfail.c testlib.c
+allocfail_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+allocfail_LDADD = libbacktrace_instrumented_alloc.la
+
+check_PROGRAMS += allocfail
+
+allocfail.sh: allocfail
+
+TESTS += allocfail.sh
+
+if USE_DSYMUTIL
+check_DATA += allocfail.dSYM
+endif USE_DSYMUTIL
+
+if HAVE_ELF
+if HAVE_OBJCOPY_DEBUGLINK
+
+b2test_SOURCES = $(btest_SOURCES)
+b2test_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+b2test_LDFLAGS = -Wl,--build-id
+b2test_LDADD = libbacktrace_elf_for_test.la
+
+check_PROGRAMS += b2test
+MAKETESTS += b2test_buildid
+
+if HAVE_DWZ
+
+b3test_SOURCES = $(btest_SOURCES)
+b3test_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+b3test_LDFLAGS = -Wl,--build-id
+b3test_LDADD = libbacktrace_elf_for_test.la
+
+check_PROGRAMS += b3test
+MAKETESTS += b3test_dwz_buildid
+
+endif HAVE_DWZ
+
+endif HAVE_OBJCOPY_DEBUGLINK
+endif HAVE_ELF
+
+btest_SOURCES = btest.c testlib.c
+btest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O
+btest_LDADD = libbacktrace.la
+
+BUILDTESTS += btest
+
+if USE_DSYMUTIL
+check_DATA += btest.dSYM
+endif USE_DSYMUTIL
+
+if HAVE_ELF
+
+btest_lto_SOURCES = btest.c testlib.c
+btest_lto_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O -flto
+btest_lto_LDADD = libbacktrace.la
+
+BUILDTESTS += btest_lto
+
+endif HAVE_ELF
+
+btest_alloc_SOURCES = $(btest_SOURCES)
+btest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+btest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += btest_alloc
+
+if USE_DSYMUTIL
+check_DATA += btest_alloc.dSYM
+endif USE_DSYMUTIL
+
+if HAVE_DWZ
+
+%_dwz: %
+	rm -f $@ $@_common.debug
+	cp $< $@_1
+	cp $< $@_2
+	if $(DWZ) -m $@_common.debug $@_1 $@_2; then \
+	  rm -f $@_2; \
+	  mv $@_1 $@; \
+	else \
+	  echo "Ignoring dwz errors, assuming that test passes"; \
+	  cp $< $@; \
+	fi
+
+MAKETESTS += btest_dwz
+
+if HAVE_OBJCOPY_DEBUGLINK
+
+MAKETESTS += btest_dwz_gnudebuglink
+
+endif HAVE_OBJCOPY_DEBUGLINK
+
+endif HAVE_DWZ
+
+stest_SOURCES = stest.c
+stest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+stest_LDADD = libbacktrace.la
+
+BUILDTESTS += stest
+
+if USE_DSYMUTIL
+check_DATA += stest.dSYM
+endif USE_DSYMUTIL
+
+stest_alloc_SOURCES = $(stest_SOURCES)
+stest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+stest_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += stest_alloc
+
+if USE_DSYMUTIL
+check_DATA += stest_alloc.dSYM
+endif USE_DSYMUTIL
+
+if HAVE_ELF
+
+ztest_SOURCES = ztest.c testlib.c
+ztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\"
+ztest_LDADD = libbacktrace.la
+ztest_alloc_LDADD = libbacktrace_alloc.la
+
+if HAVE_ZLIB
+ztest_LDADD += -lz
+ztest_alloc_LDADD += -lz
+endif
+ztest_LDADD += $(CLOCK_GETTIME_LINK)
+ztest_alloc_LDADD += $(CLOCK_GETTIME_LINK)
+
+BUILDTESTS += ztest
+
+ztest_alloc_SOURCES = $(ztest_SOURCES)
+ztest_alloc_CFLAGS = $(ztest_CFLAGS)
+
+BUILDTESTS += ztest_alloc
+
+endif HAVE_ELF
+
+edtest_SOURCES = edtest.c edtest2_build.c testlib.c
+edtest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+edtest_LDADD = libbacktrace.la
+
+BUILDTESTS += edtest
+
+if USE_DSYMUTIL
+check_DATA += edtest.dSYM
+endif USE_DSYMUTIL
+
+edtest_alloc_SOURCES = $(edtest_SOURCES)
+edtest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+edtest_alloc_LDADD = libbacktrace_alloc.la
+
+if USE_DSYMUTIL
+check_DATA += edtest_alloc.dSYM
+endif USE_DSYMUTIL
+
+BUILDTESTS += edtest_alloc
+
+edtest2_build.c: gen_edtest2_build; @true
+gen_edtest2_build: $(srcdir)/edtest2.c
+	cat $(srcdir)/edtest2.c > tmp-edtest2_build.c
+	$(SHELL) $(srcdir)/move-if-change tmp-edtest2_build.c edtest2_build.c
+	echo timestamp > $@
+
+if HAVE_PTHREAD
+
+BUILDTESTS += ttest
+
+ttest_SOURCES = ttest.c testlib.c
+ttest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -pthread
+ttest_LDADD = libbacktrace.la
+
+if USE_DSYMUTIL
+check_DATA += ttest.dSYM
+endif USE_DSYMUTIL
+
+BUILDTESTS += ttest_alloc
+
+ttest_alloc_SOURCES = $(ttest_SOURCES)
+ttest_alloc_CFLAGS = $(ttest_CFLAGS)
+ttest_alloc_LDADD = libbacktrace_alloc.la
+
+if USE_DSYMUTIL
+check_DATA += ttest_alloc.dSYM
+endif USE_DSYMUTIL
+
+endif HAVE_PTHREAD
+
+if HAVE_OBJCOPY_DEBUGLINK
+
+MAKETESTS += btest_gnudebuglink
+
+%_gnudebuglink: %
+	$(OBJCOPY) --only-keep-debug $< $@.debug
+	$(OBJCOPY) --strip-debug --add-gnu-debuglink=$@.debug $< $@
+
+endif HAVE_OBJCOPY_DEBUGLINK
+
+%_buildid: %
+	./install-debuginfo-for-buildid.sh \
+	  "$(TEST_BUILD_ID_DIR)" \
+	  $<
+	$(OBJCOPY) --strip-debug $< $@
+
+if HAVE_COMPRESSED_DEBUG
+
+ctestg_SOURCES = btest.c testlib.c
+ctestg_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+ctestg_LDFLAGS = -Wl,--compress-debug-sections=zlib-gnu
+ctestg_LDADD = libbacktrace.la
+
+ctesta_SOURCES = btest.c testlib.c
+ctesta_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+ctesta_LDFLAGS = -Wl,--compress-debug-sections=zlib-gabi
+ctesta_LDADD = libbacktrace.la
+
+BUILDTESTS += ctestg ctesta
+
+ctestg_alloc_SOURCES = $(ctestg_SOURCES)
+ctestg_alloc_CFLAGS = $(ctestg_CFLAGS)
+ctestg_alloc_LDFLAGS = $(ctestg_LDFLAGS)
+ctestg_alloc_LDADD = libbacktrace_alloc.la
+
+ctesta_alloc_SOURCES = $(ctesta_SOURCES)
+ctesta_alloc_CFLAGS = $(ctesta_CFLAGS)
+ctesta_alloc_LDFLAGS = $(ctesta_LDFLAGS)
+ctesta_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += ctestg_alloc ctesta_alloc
+
+endif
+
+if HAVE_DWARF5
+
+dwarf5_SOURCES = btest.c testlib.c
+dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5
+dwarf5_LDADD = libbacktrace.la
+
+BUILDTESTS += dwarf5
+
+if USE_DSYMUTIL
+check_DATA += dwarf5.dSYM
+endif USE_DSYMUTIL
+
+dwarf5_alloc_SOURCES = $(dwarf5_SOURCES)
+dwarf5_alloc_CFLAGS = $(dwarf5_CFLAGS)
+dwarf5_alloc_LDADD = libbacktrace_alloc.la
+
+BUILDTESTS += dwarf5_alloc
+
+if USE_DSYMUTIL
+check_DATA += dwarf5_alloc.dSYM
+endif USE_DSYMUTIL
+
+endif
+
+mtest_SOURCES = mtest.c testlib.c
+mtest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O
+mtest_LDADD = libbacktrace.la
+
+BUILDTESTS += mtest
+
+if USE_DSYMUTIL
+check_DATA += mtest.dSYM
+endif USE_DSYMUTIL
+
+if HAVE_MINIDEBUG
+
+MAKETESTS += mtest_minidebug
+
+%_minidebug: %
+	$(NM) -D $< -P --defined-only | $(AWK) '{ print $$1 }' | sort > $<.dsyms
+	$(NM) $< -P --defined-only | $(AWK) '{ if ($$2 == "T" || $$2 == "t" || $$2 == "D") print $$1 }' | sort > $<.fsyms
+	$(COMM) -13 $<.dsyms $<.fsyms > $<.keepsyms
+	$(OBJCOPY) --only-keep-debug $< $<.dbg
+	$(OBJCOPY) -S --remove-section .gdb_index --remove-section .comment --keep-symbols=$<.keepsyms $<.dbg $<.mdbg
+	$(OBJCOPY) --strip-all --remove-section ..comment $< $<.strip
+	rm -f $<.mdbg.xz
+	$(XZ) $<.mdbg
+	$(OBJCOPY) --add-section .gnu_debugdata=$<.mdbg.xz $<.strip
+	mv $<.strip $@
+
+endif HAVE_MINIDEBUG
+
+endif NATIVE
+
+if HAVE_ELF
+
+xztest_SOURCES = xztest.c testlib.c
+xztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\"
+xztest_LDADD = libbacktrace.la
+
+xztest_alloc_SOURCES = $(xztest_SOURCES)
+xztest_alloc_CFLAGS = $(xztest_CFLAGS)
+xztest_alloc_LDADD = libbacktrace_alloc.la
+
+if HAVE_LIBLZMA
+xztest_LDADD += -llzma
+xztest_alloc_LDADD += -llzma
+endif
+
+xztest_LDADD += $(CLOCK_GETTIME_LINK)
+xztest_alloc_LDADD += $(CLOCK_GETTIME_LINK)
+
+BUILDTESTS += xztest xztest_alloc
+
+endif HAVE_ELF
+
+check_PROGRAMS += $(BUILDTESTS)
+
+TESTS += $(MAKETESTS) $(BUILDTESTS)
+
+CLEANFILES = \
+	$(MAKETESTS) $(BUILDTESTS) *.debug elf_for_test.c edtest2_build.c \
+	gen_edtest2_build \
+	*.dsyms *.fsyms *.keepsyms *.dbg *.mdbg *.mdbg.xz *.strip
+
+clean-local:
+	-rm -rf usr
+
+# We can't use automake's automatic dependency tracking, because it
+# breaks when using bootstrap-lean.  Automatic dependency tracking
+# with GCC bootstrap will cause some of the objects to depend on
+# header files in prev-gcc/include, e.g., stddef.h and stdarg.h.  When
+# using bootstrap-lean, prev-gcc is removed after each stage.  When
+# running "make install", those header files will be gone, causing the
+# library to be rebuilt at install time.  That may not succeed.
+
+# These manual dependencies do not include dependencies on unwind.h,
+# even though that is part of GCC, because where to find it depends on
+# whether we are being built as a host library or a target library.
+
+alloc.lo: config.h backtrace.h internal.h
+backtrace.lo: config.h backtrace.h internal.h
+btest.lo: filenames.h backtrace.h backtrace-supported.h
+dwarf.lo: config.h filenames.h backtrace.h internal.h
+elf.lo: config.h backtrace.h internal.h
+fileline.lo: config.h backtrace.h internal.h
+macho.lo: config.h backtrace.h internal.h
+mmap.lo: config.h backtrace.h internal.h
+mmapio.lo: config.h backtrace.h internal.h
+mtest.lo: backtrace.h backtrace-supported.h
+nounwind.lo: config.h internal.h
+pecoff.lo: config.h backtrace.h internal.h
+posix.lo: config.h backtrace.h internal.h
+print.lo: config.h backtrace.h internal.h
+read.lo: config.h backtrace.h internal.h
+simple.lo: config.h backtrace.h internal.h
+sort.lo: config.h backtrace.h internal.h
+stest.lo: config.h backtrace.h internal.h
+state.lo: config.h backtrace.h backtrace-supported.h internal.h
+unknown.lo: config.h backtrace.h internal.h
+xcoff.lo: config.h backtrace.h internal.h
+xztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h
+ztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h
+
diff --git a/fluent-bit/lib/libbacktrace-8602fda/Makefile.in b/fluent-bit/lib/libbacktrace-8602fda/Makefile.in
new file mode 100644
index 000000000..e05b1497c
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/Makefile.in
@@ -0,0 +1,2544 @@
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2017 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Makefile.am -- Backtrace Makefile.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+
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+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@	libbacktrace_alloc.la
+dwarf5_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(dwarf5_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_edtest_OBJECTS = edtest-edtest.$(OBJEXT) \
+@NATIVE_TRUE@	edtest-edtest2_build.$(OBJEXT) \
+@NATIVE_TRUE@	edtest-testlib.$(OBJEXT)
+edtest_OBJECTS = $(am_edtest_OBJECTS)
+@NATIVE_TRUE@edtest_DEPENDENCIES = libbacktrace.la
+edtest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(edtest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am__objects_8 = edtest_alloc-edtest.$(OBJEXT) \
+@NATIVE_TRUE@	edtest_alloc-edtest2_build.$(OBJEXT) \
+@NATIVE_TRUE@	edtest_alloc-testlib.$(OBJEXT)
+@NATIVE_TRUE@am_edtest_alloc_OBJECTS = $(am__objects_8)
+edtest_alloc_OBJECTS = $(am_edtest_alloc_OBJECTS)
+@NATIVE_TRUE@edtest_alloc_DEPENDENCIES = libbacktrace_alloc.la
+edtest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(edtest_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_mtest_OBJECTS = mtest-mtest.$(OBJEXT) \
+@NATIVE_TRUE@	mtest-testlib.$(OBJEXT)
+mtest_OBJECTS = $(am_mtest_OBJECTS)
+@NATIVE_TRUE@mtest_DEPENDENCIES = libbacktrace.la
+mtest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(mtest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_stest_OBJECTS = stest-stest.$(OBJEXT)
+stest_OBJECTS = $(am_stest_OBJECTS)
+@NATIVE_TRUE@stest_DEPENDENCIES = libbacktrace.la
+stest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(stest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am__objects_9 = stest_alloc-stest.$(OBJEXT)
+@NATIVE_TRUE@am_stest_alloc_OBJECTS = $(am__objects_9)
+stest_alloc_OBJECTS = $(am_stest_alloc_OBJECTS)
+@NATIVE_TRUE@stest_alloc_DEPENDENCIES = libbacktrace_alloc.la
+stest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(stest_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_elf_32_OBJECTS =  \
+@NATIVE_TRUE@	test_elf_32-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_elf_32-testlib.$(OBJEXT)
+test_elf_32_OBJECTS = $(am_test_elf_32_OBJECTS)
+@NATIVE_TRUE@test_elf_32_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	elf_32.lo
+test_elf_32_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_elf_32_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_elf_64_OBJECTS =  \
+@NATIVE_TRUE@	test_elf_64-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_elf_64-testlib.$(OBJEXT)
+test_elf_64_OBJECTS = $(am_test_elf_64_OBJECTS)
+@NATIVE_TRUE@test_elf_64_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	elf_64.lo
+test_elf_64_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_elf_64_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_macho_OBJECTS = test_macho-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_macho-testlib.$(OBJEXT)
+test_macho_OBJECTS = $(am_test_macho_OBJECTS)
+@NATIVE_TRUE@test_macho_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	macho.lo
+test_macho_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_macho_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_pecoff_OBJECTS =  \
+@NATIVE_TRUE@	test_pecoff-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_pecoff-testlib.$(OBJEXT)
+test_pecoff_OBJECTS = $(am_test_pecoff_OBJECTS)
+@NATIVE_TRUE@test_pecoff_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	pecoff.lo
+test_pecoff_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_pecoff_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_unknown_OBJECTS =  \
+@NATIVE_TRUE@	test_unknown-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_unknown-testlib.$(OBJEXT)
+test_unknown_OBJECTS = $(am_test_unknown_OBJECTS)
+@NATIVE_TRUE@test_unknown_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	unknown.lo
+test_unknown_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_unknown_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_xcoff_32_OBJECTS =  \
+@NATIVE_TRUE@	test_xcoff_32-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_xcoff_32-testlib.$(OBJEXT)
+test_xcoff_32_OBJECTS = $(am_test_xcoff_32_OBJECTS)
+@NATIVE_TRUE@test_xcoff_32_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	xcoff_32.lo
+test_xcoff_32_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_xcoff_32_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_test_xcoff_64_OBJECTS =  \
+@NATIVE_TRUE@	test_xcoff_64-test_format.$(OBJEXT) \
+@NATIVE_TRUE@	test_xcoff_64-testlib.$(OBJEXT)
+test_xcoff_64_OBJECTS = $(am_test_xcoff_64_OBJECTS)
+@NATIVE_TRUE@test_xcoff_64_DEPENDENCIES = libbacktrace_noformat.la \
+@NATIVE_TRUE@	xcoff_64.lo
+test_xcoff_64_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(test_xcoff_64_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@am_ttest_OBJECTS =  \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	ttest-ttest.$(OBJEXT) \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	ttest-testlib.$(OBJEXT)
+ttest_OBJECTS = $(am_ttest_OBJECTS)
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_DEPENDENCIES = libbacktrace.la
+ttest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(ttest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@am__objects_10 =  \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	ttest_alloc-ttest.$(OBJEXT) \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	ttest_alloc-testlib.$(OBJEXT)
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@am_ttest_alloc_OBJECTS =  \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	$(am__objects_10)
+ttest_alloc_OBJECTS = $(am_ttest_alloc_OBJECTS)
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_alloc_DEPENDENCIES =  \
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@	libbacktrace_alloc.la
+ttest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(ttest_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am_unittest_OBJECTS = unittest-unittest.$(OBJEXT) \
+@NATIVE_TRUE@	unittest-testlib.$(OBJEXT)
+unittest_OBJECTS = $(am_unittest_OBJECTS)
+@NATIVE_TRUE@unittest_DEPENDENCIES = libbacktrace.la
+unittest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(unittest_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@NATIVE_TRUE@am__objects_11 = unittest_alloc-unittest.$(OBJEXT) \
+@NATIVE_TRUE@	unittest_alloc-testlib.$(OBJEXT)
+@NATIVE_TRUE@am_unittest_alloc_OBJECTS = $(am__objects_11)
+unittest_alloc_OBJECTS = $(am_unittest_alloc_OBJECTS)
+@NATIVE_TRUE@unittest_alloc_DEPENDENCIES = libbacktrace_alloc.la
+unittest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC \
+	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link $(CCLD) \
+	$(unittest_alloc_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o \
+	$@
+@HAVE_ELF_TRUE@am_xztest_OBJECTS = xztest-xztest.$(OBJEXT) \
+@HAVE_ELF_TRUE@	xztest-testlib.$(OBJEXT)
+xztest_OBJECTS = $(am_xztest_OBJECTS)
+@HAVE_ELF_TRUE@xztest_DEPENDENCIES = libbacktrace.la \
+@HAVE_ELF_TRUE@	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+xztest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(xztest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@HAVE_ELF_TRUE@am__objects_12 = xztest_alloc-xztest.$(OBJEXT) \
+@HAVE_ELF_TRUE@	xztest_alloc-testlib.$(OBJEXT)
+@HAVE_ELF_TRUE@am_xztest_alloc_OBJECTS = $(am__objects_12)
+xztest_alloc_OBJECTS = $(am_xztest_alloc_OBJECTS)
+@HAVE_ELF_TRUE@xztest_alloc_DEPENDENCIES = libbacktrace_alloc.la \
+@HAVE_ELF_TRUE@	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+xztest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(xztest_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+@HAVE_ELF_TRUE@@NATIVE_TRUE@am_ztest_OBJECTS = ztest-ztest.$(OBJEXT) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	ztest-testlib.$(OBJEXT)
+ztest_OBJECTS = $(am_ztest_OBJECTS)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_DEPENDENCIES = libbacktrace.la \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__DEPENDENCIES_1) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__DEPENDENCIES_1)
+ztest_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(ztest_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+@HAVE_ELF_TRUE@@NATIVE_TRUE@am__objects_13 =  \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	ztest_alloc-ztest.$(OBJEXT) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	ztest_alloc-testlib.$(OBJEXT)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@am_ztest_alloc_OBJECTS =  \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__objects_13)
+ztest_alloc_OBJECTS = $(am_ztest_alloc_OBJECTS)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_alloc_DEPENDENCIES =  \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	libbacktrace_alloc.la \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__DEPENDENCIES_1) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__DEPENDENCIES_1)
+ztest_alloc_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(ztest_alloc_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
+am__v_P_0 = false
+am__v_P_1 = :
+AM_V_GEN = $(am__v_GEN_@AM_V@)
+am__v_GEN_ = $(am__v_GEN_@AM_DEFAULT_V@)
+am__v_GEN_0 = @echo "  GEN     " $@;
+am__v_GEN_1 = 
+AM_V_at = $(am__v_at_@AM_V@)
+am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
+am__v_at_0 = @
+am__v_at_1 = 
+DEFAULT_INCLUDES = -I.@am__isrc@
+depcomp =
+am__depfiles_maybe =
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) \
+	$(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
+	$(AM_CFLAGS) $(CFLAGS)
+AM_V_CC = $(am__v_CC_@AM_V@)
+am__v_CC_ = $(am__v_CC_@AM_DEFAULT_V@)
+am__v_CC_0 = @echo "  CC      " $@;
+am__v_CC_1 = 
+CCLD = $(CC)
+LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(AM_LDFLAGS) $(LDFLAGS) -o $@
+AM_V_CCLD = $(am__v_CCLD_@AM_V@)
+am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
+am__v_CCLD_0 = @echo "  CCLD    " $@;
+am__v_CCLD_1 = 
+SOURCES = $(libbacktrace_la_SOURCES) $(EXTRA_libbacktrace_la_SOURCES) \
+	$(libbacktrace_alloc_la_SOURCES) \
+	$(libbacktrace_elf_for_test_la_SOURCES) \
+	$(libbacktrace_instrumented_alloc_la_SOURCES) \
+	$(libbacktrace_noformat_la_SOURCES) $(allocfail_SOURCES) \
+	$(b2test_SOURCES) $(b3test_SOURCES) $(btest_SOURCES) \
+	$(btest_alloc_SOURCES) $(btest_lto_SOURCES) $(ctesta_SOURCES) \
+	$(ctesta_alloc_SOURCES) $(ctestg_SOURCES) \
+	$(ctestg_alloc_SOURCES) $(dwarf5_SOURCES) \
+	$(dwarf5_alloc_SOURCES) $(edtest_SOURCES) \
+	$(edtest_alloc_SOURCES) $(mtest_SOURCES) $(stest_SOURCES) \
+	$(stest_alloc_SOURCES) $(test_elf_32_SOURCES) \
+	$(test_elf_64_SOURCES) $(test_macho_SOURCES) \
+	$(test_pecoff_SOURCES) $(test_unknown_SOURCES) \
+	$(test_xcoff_32_SOURCES) $(test_xcoff_64_SOURCES) \
+	$(ttest_SOURCES) $(ttest_alloc_SOURCES) $(unittest_SOURCES) \
+	$(unittest_alloc_SOURCES) $(xztest_SOURCES) \
+	$(xztest_alloc_SOURCES) $(ztest_SOURCES) \
+	$(ztest_alloc_SOURCES)
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
+HEADERS = $(include_HEADERS)
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) \
+	$(LISP)config.h.in
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
+    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+  done | $(am__uniquify_input)`
+ETAGS = etags
+CTAGS = ctags
+CSCOPE = cscope
+AM_RECURSIVE_TARGETS = cscope check recheck
+am__tty_colors_dummy = \
+  mgn= red= grn= lgn= blu= brg= std=; \
+  am__color_tests=no
+am__tty_colors = { \
+  $(am__tty_colors_dummy); \
+  if test "X$(AM_COLOR_TESTS)" = Xno; then \
+    am__color_tests=no; \
+  elif test "X$(AM_COLOR_TESTS)" = Xalways; then \
+    am__color_tests=yes; \
+  elif test "X$$TERM" != Xdumb && { test -t 1; } 2>/dev/null; then \
+    am__color_tests=yes; \
+  fi; \
+  if test $$am__color_tests = yes; then \
+    red=''; \
+    grn=''; \
+    lgn=''; \
+    blu=''; \
+    mgn=''; \
+    brg=''; \
+    std=''; \
+  fi; \
+}
+am__recheck_rx = ^[ 	]*:recheck:[ 	]*
+am__global_test_result_rx = ^[ 	]*:global-test-result:[ 	]*
+am__copy_in_global_log_rx = ^[ 	]*:copy-in-global-log:[ 	]*
+# A command that, given a newline-separated list of test names on the
+# standard input, print the name of the tests that are to be re-run
+# upon "make recheck".
+am__list_recheck_tests = $(AWK) '{ \
+  recheck = 1; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+        { \
+          if ((getline line2 < ($$0 ".log")) < 0) \
+	    recheck = 0; \
+          break; \
+        } \
+      else if (line ~ /$(am__recheck_rx)[nN][Oo]/) \
+        { \
+          recheck = 0; \
+          break; \
+        } \
+      else if (line ~ /$(am__recheck_rx)[yY][eE][sS]/) \
+        { \
+          break; \
+        } \
+    }; \
+  if (recheck) \
+    print $$0; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# A command that, given a newline-separated list of test names on the
+# standard input, create the global log from their .trs and .log files.
+am__create_global_log = $(AWK) ' \
+function fatal(msg) \
+{ \
+  print "fatal: making $@: " msg | "cat >&2"; \
+  exit 1; \
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+function rst_section(header) \
+{ \
+  print header; \
+  len = length(header); \
+  for (i = 1; i <= len; i = i + 1) \
+    printf "="; \
+  printf "\n\n"; \
+} \
+{ \
+  copy_in_global_log = 1; \
+  global_test_result = "RUN"; \
+  while ((rc = (getline line < ($$0 ".trs"))) != 0) \
+    { \
+      if (rc < 0) \
+         fatal("failed to read from " $$0 ".trs"); \
+      if (line ~ /$(am__global_test_result_rx)/) \
+        { \
+          sub("$(am__global_test_result_rx)", "", line); \
+          sub("[ 	]*$$", "", line); \
+          global_test_result = line; \
+        } \
+      else if (line ~ /$(am__copy_in_global_log_rx)[nN][oO]/) \
+        copy_in_global_log = 0; \
+    }; \
+  if (copy_in_global_log) \
+    { \
+      rst_section(global_test_result ": " $$0); \
+      while ((rc = (getline line < ($$0 ".log"))) != 0) \
+      { \
+        if (rc < 0) \
+          fatal("failed to read from " $$0 ".log"); \
+        print line; \
+      }; \
+      printf "\n"; \
+    }; \
+  close ($$0 ".trs"); \
+  close ($$0 ".log"); \
+}'
+# Restructured Text title.
+am__rst_title = { sed 's/.*/   &   /;h;s/./=/g;p;x;s/ *$$//;p;g' && echo; }
+# Solaris 10 'make', and several other traditional 'make' implementations,
+# pass "-e" to $(SHELL), and POSIX 2008 even requires this.  Work around it
+# by disabling -e (using the XSI extension "set +e") if it's set.
+am__sh_e_setup = case $$- in *e*) set +e;; esac
+# Default flags passed to test drivers.
+am__common_driver_flags = \
+  --color-tests "$$am__color_tests" \
+  --enable-hard-errors "$$am__enable_hard_errors" \
+  --expect-failure "$$am__expect_failure"
+# To be inserted before the command running the test.  Creates the
+# directory for the log if needed.  Stores in $dir the directory
+# containing $f, in $tst the test, in $log the log.  Executes the
+# developer- defined test setup AM_TESTS_ENVIRONMENT (if any), and
+# passes TESTS_ENVIRONMENT.  Set up options for the wrapper that
+# will run the test scripts (or their associated LOG_COMPILER, if
+# thy have one).
+am__check_pre = \
+$(am__sh_e_setup);					\
+$(am__vpath_adj_setup) $(am__vpath_adj)			\
+$(am__tty_colors);					\
+srcdir=$(srcdir); export srcdir;			\
+case "$@" in						\
+  */*) am__odir=`echo "./$@" | sed 's|/[^/]*$$||'`;;	\
+    *) am__odir=.;; 					\
+esac;							\
+test "x$$am__odir" = x"." || test -d "$$am__odir" 	\
+  || $(MKDIR_P) "$$am__odir" || exit $$?;		\
+if test -f "./$$f"; then dir=./;			\
+elif test -f "$$f"; then dir=;				\
+else dir="$(srcdir)/"; fi;				\
+tst=$$dir$$f; log='$@'; 				\
+if test -n '$(DISABLE_HARD_ERRORS)'; then		\
+  am__enable_hard_errors=no; 				\
+else							\
+  am__enable_hard_errors=yes; 				\
+fi; 							\
+case " $(XFAIL_TESTS) " in				\
+  *[\ \	]$$f[\ \	]* | *[\ \	]$$dir$$f[\ \	]*) \
+    am__expect_failure=yes;;				\
+  *)							\
+    am__expect_failure=no;;				\
+esac; 							\
+$(AM_TESTS_ENVIRONMENT) $(TESTS_ENVIRONMENT)
+# A shell command to get the names of the tests scripts with any registered
+# extension removed (i.e., equivalently, the names of the test logs, with
+# the '.log' extension removed).  The result is saved in the shell variable
+# '$bases'.  This honors runtime overriding of TESTS and TEST_LOGS.  Sadly,
+# we cannot use something simpler, involving e.g., "$(TEST_LOGS:.log=)",
+# since that might cause problem with VPATH rewrites for suffix-less tests.
+# See also 'test-harness-vpath-rewrite.sh' and 'test-trs-basic.sh'.
+am__set_TESTS_bases = \
+  bases='$(TEST_LOGS)'; \
+  bases=`for i in $$bases; do echo $$i; done | sed 's/\.log$$//'`; \
+  bases=`echo $$bases`
+RECHECK_LOGS = $(TEST_LOGS)
+TEST_SUITE_LOG = test-suite.log
+TEST_EXTENSIONS = @EXEEXT@ .test
+LOG_DRIVER = $(SHELL) $(top_srcdir)/test-driver
+LOG_COMPILE = $(LOG_COMPILER) $(AM_LOG_FLAGS) $(LOG_FLAGS)
+am__set_b = \
+  case '$@' in \
+    */*) \
+      case '$*' in \
+        */*) b='$*';; \
+          *) b=`echo '$@' | sed 's/\.log$$//'`; \
+       esac;; \
+    *) \
+      b='$*';; \
+  esac
+am__test_logs1 = $(TESTS:=.log)
+am__test_logs2 = $(am__test_logs1:@EXEEXT@.log=.log)
+TEST_LOGS = $(am__test_logs2:.test.log=.log)
+TEST_LOG_DRIVER = $(SHELL) $(top_srcdir)/test-driver
+TEST_LOG_COMPILE = $(TEST_LOG_COMPILER) $(AM_TEST_LOG_FLAGS) \
+	$(TEST_LOG_FLAGS)
+ACLOCAL = @ACLOCAL@
+ALLOC_FILE = @ALLOC_FILE@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AR = @AR@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BACKTRACE_FILE = @BACKTRACE_FILE@
+BACKTRACE_SUPPORTED = @BACKTRACE_SUPPORTED@
+BACKTRACE_SUPPORTS_DATA = @BACKTRACE_SUPPORTS_DATA@
+BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
+BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
+CC = @CC@
+CFLAGS = @CFLAGS@
+CLOCK_GETTIME_LINK = @CLOCK_GETTIME_LINK@
+COMM = @COMM@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
+DWZ = @DWZ@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+EXTRA_FLAGS = @EXTRA_FLAGS@
+FGREP = @FGREP@
+FORMAT_FILE = @FORMAT_FILE@
+GREP = @GREP@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LTLIBOBJS = @LTLIBOBJS@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJCOPY = @OBJCOPY@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PIC_FLAG = @PIC_FLAG@
+PTHREAD_CFLAGS = @PTHREAD_CFLAGS@
+RANLIB = @RANLIB@
+READELF = @READELF@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+VERSION = @VERSION@
+VIEW_FILE = @VIEW_FILE@
+WARN_FLAGS = @WARN_FLAGS@
+XZ = @XZ@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+am__leading_dot = @am__leading_dot@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+libtool_VERSION = @libtool_VERSION@
+localedir = @localedir@
+localstatedir = @localstatedir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+multi_basedir = @multi_basedir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+sysconfdir = @sysconfdir@
+target = @target@
+target_alias = @target_alias@
+target_cpu = @target_cpu@
+target_os = @target_os@
+target_vendor = @target_vendor@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+ACLOCAL_AMFLAGS = -I config
+AM_CPPFLAGS = 
+AM_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) $(PIC_FLAG)
+include_HEADERS = backtrace.h backtrace-supported.h
+lib_LTLIBRARIES = libbacktrace.la
+libbacktrace_la_SOURCES = \
+	backtrace.h \
+	atomic.c \
+	dwarf.c \
+	fileline.c \
+	internal.h \
+	posix.c \
+	print.c \
+	sort.c \
+	state.c
+
+BACKTRACE_FILES = \
+	backtrace.c \
+	simple.c \
+	nounwind.c
+
+FORMAT_FILES = \
+	elf.c \
+	macho.c \
+	pecoff.c \
+	unknown.c \
+	xcoff.c
+
+VIEW_FILES = \
+	read.c \
+	mmapio.c
+
+ALLOC_FILES = \
+	alloc.c \
+	mmap.c
+
+EXTRA_libbacktrace_la_SOURCES = \
+	$(BACKTRACE_FILES) \
+	$(FORMAT_FILES) \
+	$(VIEW_FILES) \
+	$(ALLOC_FILES)
+
+libbacktrace_la_LIBADD = \
+	$(BACKTRACE_FILE) \
+	$(FORMAT_FILE) \
+	$(VIEW_FILE) \
+	$(ALLOC_FILE)
+
+libbacktrace_la_DEPENDENCIES = $(libbacktrace_la_LIBADD)
+
+# Add a test to this variable if you want it to be built as a Makefile
+# target and run.
+MAKETESTS = $(am__append_7) $(am__append_9) $(am__append_12) \
+	$(am__append_13) $(am__append_20) $(am__append_26)
+
+# Add a test to this variable if you want it to be built as a program,
+# with SOURCES, etc., and run.
+BUILDTESTS = $(am__append_2) $(am__append_10) $(am__append_11) \
+	$(am__append_16) $(am__append_17) $(am__append_18) \
+	$(am__append_21) $(am__append_22) $(am__append_24) \
+	$(am__append_29)
+
+# Add a file to this variable if you want it to be built for testing.
+check_DATA = $(am__append_5) $(am__append_19) $(am__append_23) \
+	$(am__append_25)
+
+# Flags to use when compiling test programs.
+libbacktrace_TEST_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) -g
+@NATIVE_TRUE@check_LTLIBRARIES = libbacktrace_alloc.la \
+@NATIVE_TRUE@	libbacktrace_noformat.la $(am__append_1) \
+@NATIVE_TRUE@	libbacktrace_instrumented_alloc.la
+@NATIVE_TRUE@libbacktrace_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+@NATIVE_TRUE@libbacktrace_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) read.lo alloc.lo
+@NATIVE_TRUE@libbacktrace_alloc_la_DEPENDENCIES = $(libbacktrace_alloc_la_LIBADD)
+@NATIVE_TRUE@libbacktrace_noformat_la_SOURCES = $(libbacktrace_la_SOURCES)
+@NATIVE_TRUE@libbacktrace_noformat_la_LIBADD = $(BACKTRACE_FILE) $(VIEW_FILE) $(ALLOC_FILE)
+@NATIVE_TRUE@libbacktrace_noformat_la_DEPENDENCIES = $(libbacktrace_noformat_la_LIBADD)
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@TEST_BUILD_ID_DIR = $(abs_builddir)/usr/lib/debug/.build-id/
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@libbacktrace_elf_for_test_la_SOURCES = $(libbacktrace_la_SOURCES)
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@libbacktrace_elf_for_test_la_LIBADD = $(BACKTRACE_FILE) elf_for_test.lo \
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	$(VIEW_FILE) $(ALLOC_FILE)
+
+@NATIVE_TRUE@test_elf_32_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_elf_32_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_elf_32_LDADD = libbacktrace_noformat.la elf_32.lo
+@NATIVE_TRUE@test_elf_64_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_elf_64_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_elf_64_LDADD = libbacktrace_noformat.la elf_64.lo
+@NATIVE_TRUE@test_macho_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_macho_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_macho_LDADD = libbacktrace_noformat.la macho.lo
+@NATIVE_TRUE@test_xcoff_32_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_xcoff_32_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_xcoff_32_LDADD = libbacktrace_noformat.la xcoff_32.lo
+@NATIVE_TRUE@test_xcoff_64_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_xcoff_64_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_xcoff_64_LDADD = libbacktrace_noformat.la xcoff_64.lo
+@NATIVE_TRUE@test_pecoff_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_pecoff_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_pecoff_LDADD = libbacktrace_noformat.la pecoff.lo
+@NATIVE_TRUE@test_unknown_SOURCES = test_format.c testlib.c
+@NATIVE_TRUE@test_unknown_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@test_unknown_LDADD = libbacktrace_noformat.la unknown.lo
+@NATIVE_TRUE@unittest_SOURCES = unittest.c testlib.c
+@NATIVE_TRUE@unittest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@unittest_LDADD = libbacktrace.la
+@NATIVE_TRUE@unittest_alloc_SOURCES = $(unittest_SOURCES)
+@NATIVE_TRUE@unittest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@unittest_alloc_LDADD = libbacktrace_alloc.la
+@NATIVE_TRUE@libbacktrace_instrumented_alloc_la_SOURCES = $(libbacktrace_la_SOURCES)
+@NATIVE_TRUE@libbacktrace_instrumented_alloc_la_LIBADD = $(BACKTRACE_FILE) $(FORMAT_FILE) \
+@NATIVE_TRUE@	read.lo instrumented_alloc.lo
+
+@NATIVE_TRUE@libbacktrace_instrumented_alloc_la_DEPENDENCIES = \
+@NATIVE_TRUE@	$(libbacktrace_instrumented_alloc_la_LIBADD)
+
+@NATIVE_TRUE@allocfail_SOURCES = allocfail.c testlib.c
+@NATIVE_TRUE@allocfail_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@allocfail_LDADD = libbacktrace_instrumented_alloc.la
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b2test_SOURCES = $(btest_SOURCES)
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b2test_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b2test_LDFLAGS = -Wl,--build-id
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b2test_LDADD = libbacktrace_elf_for_test.la
+@HAVE_DWZ_TRUE@@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b3test_SOURCES = $(btest_SOURCES)
+@HAVE_DWZ_TRUE@@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b3test_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@HAVE_DWZ_TRUE@@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b3test_LDFLAGS = -Wl,--build-id
+@HAVE_DWZ_TRUE@@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@b3test_LDADD = libbacktrace_elf_for_test.la
+@NATIVE_TRUE@btest_SOURCES = btest.c testlib.c
+@NATIVE_TRUE@btest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O
+@NATIVE_TRUE@btest_LDADD = libbacktrace.la
+@HAVE_ELF_TRUE@@NATIVE_TRUE@btest_lto_SOURCES = btest.c testlib.c
+@HAVE_ELF_TRUE@@NATIVE_TRUE@btest_lto_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O -flto
+@HAVE_ELF_TRUE@@NATIVE_TRUE@btest_lto_LDADD = libbacktrace.la
+@NATIVE_TRUE@btest_alloc_SOURCES = $(btest_SOURCES)
+@NATIVE_TRUE@btest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@btest_alloc_LDADD = libbacktrace_alloc.la
+@NATIVE_TRUE@stest_SOURCES = stest.c
+@NATIVE_TRUE@stest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@stest_LDADD = libbacktrace.la
+@NATIVE_TRUE@stest_alloc_SOURCES = $(stest_SOURCES)
+@NATIVE_TRUE@stest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@stest_alloc_LDADD = libbacktrace_alloc.la
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_SOURCES = ztest.c testlib.c
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\"
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_LDADD = libbacktrace.la \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__append_14) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(CLOCK_GETTIME_LINK)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_alloc_LDADD = libbacktrace_alloc.la \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(am__append_15) \
+@HAVE_ELF_TRUE@@NATIVE_TRUE@	$(CLOCK_GETTIME_LINK)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_alloc_SOURCES = $(ztest_SOURCES)
+@HAVE_ELF_TRUE@@NATIVE_TRUE@ztest_alloc_CFLAGS = $(ztest_CFLAGS)
+@NATIVE_TRUE@edtest_SOURCES = edtest.c edtest2_build.c testlib.c
+@NATIVE_TRUE@edtest_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@edtest_LDADD = libbacktrace.la
+@NATIVE_TRUE@edtest_alloc_SOURCES = $(edtest_SOURCES)
+@NATIVE_TRUE@edtest_alloc_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@NATIVE_TRUE@edtest_alloc_LDADD = libbacktrace_alloc.la
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_SOURCES = ttest.c testlib.c
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -pthread
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_LDADD = libbacktrace.la
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_alloc_SOURCES = $(ttest_SOURCES)
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_alloc_CFLAGS = $(ttest_CFLAGS)
+@HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_alloc_LDADD = libbacktrace_alloc.la
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_SOURCES = btest.c testlib.c
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_LDFLAGS = -Wl,--compress-debug-sections=zlib-gnu
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_LDADD = libbacktrace.la
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_SOURCES = btest.c testlib.c
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_CFLAGS = $(libbacktrace_TEST_CFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_LDFLAGS = -Wl,--compress-debug-sections=zlib-gabi
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_LDADD = libbacktrace.la
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_alloc_SOURCES = $(ctestg_SOURCES)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_alloc_CFLAGS = $(ctestg_CFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_alloc_LDFLAGS = $(ctestg_LDFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctestg_alloc_LDADD = libbacktrace_alloc.la
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_alloc_SOURCES = $(ctesta_SOURCES)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_alloc_CFLAGS = $(ctesta_CFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_alloc_LDFLAGS = $(ctesta_LDFLAGS)
+@HAVE_COMPRESSED_DEBUG_TRUE@@NATIVE_TRUE@ctesta_alloc_LDADD = libbacktrace_alloc.la
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_SOURCES = btest.c testlib.c
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_CFLAGS = $(libbacktrace_TEST_CFLAGS) -gdwarf-5
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_LDADD = libbacktrace.la
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_SOURCES = $(dwarf5_SOURCES)
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_CFLAGS = $(dwarf5_CFLAGS)
+@HAVE_DWARF5_TRUE@@NATIVE_TRUE@dwarf5_alloc_LDADD = libbacktrace_alloc.la
+@NATIVE_TRUE@mtest_SOURCES = mtest.c testlib.c
+@NATIVE_TRUE@mtest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -O
+@NATIVE_TRUE@mtest_LDADD = libbacktrace.la
+@HAVE_ELF_TRUE@xztest_SOURCES = xztest.c testlib.c
+@HAVE_ELF_TRUE@xztest_CFLAGS = $(libbacktrace_TEST_CFLAGS) -DSRCDIR=\"$(srcdir)\"
+@HAVE_ELF_TRUE@xztest_LDADD = libbacktrace.la $(am__append_27) \
+@HAVE_ELF_TRUE@	$(CLOCK_GETTIME_LINK)
+@HAVE_ELF_TRUE@xztest_alloc_SOURCES = $(xztest_SOURCES)
+@HAVE_ELF_TRUE@xztest_alloc_CFLAGS = $(xztest_CFLAGS)
+@HAVE_ELF_TRUE@xztest_alloc_LDADD = libbacktrace_alloc.la \
+@HAVE_ELF_TRUE@	$(am__append_28) $(CLOCK_GETTIME_LINK)
+CLEANFILES = \
+	$(MAKETESTS) $(BUILDTESTS) *.debug elf_for_test.c edtest2_build.c \
+	gen_edtest2_build \
+	*.dsyms *.fsyms *.keepsyms *.dbg *.mdbg *.mdbg.xz *.strip
+
+all: config.h
+	$(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .log .o .obj .test .test$(EXEEXT) .trs
+am--refresh: Makefile
+	@:
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      echo ' cd $(srcdir) && $(AUTOMAKE) --foreign --ignore-deps'; \
+	      $(am__cd) $(srcdir) && $(AUTOMAKE) --foreign --ignore-deps \
+		&& exit 0; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign --ignore-deps Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign --ignore-deps Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    echo ' $(SHELL) ./config.status'; \
+	    $(SHELL) ./config.status;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	$(SHELL) ./config.status --recheck
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	$(am__cd) $(srcdir) && $(AUTOCONF)
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	$(am__cd) $(srcdir) && $(ACLOCAL) $(ACLOCAL_AMFLAGS)
+$(am__aclocal_m4_deps):
+
+config.h: stamp-h1
+	@test -f $@ || rm -f stamp-h1
+	@test -f $@ || $(MAKE) $(AM_MAKEFLAGS) stamp-h1
+
+stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
+	@rm -f stamp-h1
+	cd $(top_builddir) && $(SHELL) ./config.status config.h
+$(srcdir)/config.h.in: @MAINTAINER_MODE_TRUE@ $(am__configure_deps) 
+	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
+	rm -f stamp-h1
+	touch $@
+
+distclean-hdr:
+	-rm -f config.h stamp-h1
+backtrace-supported.h: $(top_builddir)/config.status $(srcdir)/backtrace-supported.h.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+install-debuginfo-for-buildid.sh: $(top_builddir)/config.status $(srcdir)/install-debuginfo-for-buildid.sh.in
+	cd $(top_builddir) && $(SHELL) ./config.status $@
+
+clean-checkLTLIBRARIES:
+	-test -z "$(check_LTLIBRARIES)" || rm -f $(check_LTLIBRARIES)
+	@list='$(check_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+install-libLTLIBRARIES: $(lib_LTLIBRARIES)
+	@$(NORMAL_INSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
+	}
+
+uninstall-libLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
+	done
+
+clean-libLTLIBRARIES:
+	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+
+libbacktrace.la: $(libbacktrace_la_OBJECTS) $(libbacktrace_la_DEPENDENCIES) $(EXTRA_libbacktrace_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) -rpath $(libdir) $(libbacktrace_la_OBJECTS) $(libbacktrace_la_LIBADD) $(LIBS)
+
+libbacktrace_alloc.la: $(libbacktrace_alloc_la_OBJECTS) $(libbacktrace_alloc_la_DEPENDENCIES) $(EXTRA_libbacktrace_alloc_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) $(am_libbacktrace_alloc_la_rpath) $(libbacktrace_alloc_la_OBJECTS) $(libbacktrace_alloc_la_LIBADD) $(LIBS)
+
+libbacktrace_elf_for_test.la: $(libbacktrace_elf_for_test_la_OBJECTS) $(libbacktrace_elf_for_test_la_DEPENDENCIES) $(EXTRA_libbacktrace_elf_for_test_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) $(am_libbacktrace_elf_for_test_la_rpath) $(libbacktrace_elf_for_test_la_OBJECTS) $(libbacktrace_elf_for_test_la_LIBADD) $(LIBS)
+
+libbacktrace_instrumented_alloc.la: $(libbacktrace_instrumented_alloc_la_OBJECTS) $(libbacktrace_instrumented_alloc_la_DEPENDENCIES) $(EXTRA_libbacktrace_instrumented_alloc_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) $(am_libbacktrace_instrumented_alloc_la_rpath) $(libbacktrace_instrumented_alloc_la_OBJECTS) $(libbacktrace_instrumented_alloc_la_LIBADD) $(LIBS)
+
+libbacktrace_noformat.la: $(libbacktrace_noformat_la_OBJECTS) $(libbacktrace_noformat_la_DEPENDENCIES) $(EXTRA_libbacktrace_noformat_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK) $(am_libbacktrace_noformat_la_rpath) $(libbacktrace_noformat_la_OBJECTS) $(libbacktrace_noformat_la_LIBADD) $(LIBS)
+
+clean-checkPROGRAMS:
+	@list='$(check_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+allocfail$(EXEEXT): $(allocfail_OBJECTS) $(allocfail_DEPENDENCIES) $(EXTRA_allocfail_DEPENDENCIES) 
+	@rm -f allocfail$(EXEEXT)
+	$(AM_V_CCLD)$(allocfail_LINK) $(allocfail_OBJECTS) $(allocfail_LDADD) $(LIBS)
+
+b2test$(EXEEXT): $(b2test_OBJECTS) $(b2test_DEPENDENCIES) $(EXTRA_b2test_DEPENDENCIES) 
+	@rm -f b2test$(EXEEXT)
+	$(AM_V_CCLD)$(b2test_LINK) $(b2test_OBJECTS) $(b2test_LDADD) $(LIBS)
+
+b3test$(EXEEXT): $(b3test_OBJECTS) $(b3test_DEPENDENCIES) $(EXTRA_b3test_DEPENDENCIES) 
+	@rm -f b3test$(EXEEXT)
+	$(AM_V_CCLD)$(b3test_LINK) $(b3test_OBJECTS) $(b3test_LDADD) $(LIBS)
+
+btest$(EXEEXT): $(btest_OBJECTS) $(btest_DEPENDENCIES) $(EXTRA_btest_DEPENDENCIES) 
+	@rm -f btest$(EXEEXT)
+	$(AM_V_CCLD)$(btest_LINK) $(btest_OBJECTS) $(btest_LDADD) $(LIBS)
+
+btest_alloc$(EXEEXT): $(btest_alloc_OBJECTS) $(btest_alloc_DEPENDENCIES) $(EXTRA_btest_alloc_DEPENDENCIES) 
+	@rm -f btest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(btest_alloc_LINK) $(btest_alloc_OBJECTS) $(btest_alloc_LDADD) $(LIBS)
+
+btest_lto$(EXEEXT): $(btest_lto_OBJECTS) $(btest_lto_DEPENDENCIES) $(EXTRA_btest_lto_DEPENDENCIES) 
+	@rm -f btest_lto$(EXEEXT)
+	$(AM_V_CCLD)$(btest_lto_LINK) $(btest_lto_OBJECTS) $(btest_lto_LDADD) $(LIBS)
+
+ctesta$(EXEEXT): $(ctesta_OBJECTS) $(ctesta_DEPENDENCIES) $(EXTRA_ctesta_DEPENDENCIES) 
+	@rm -f ctesta$(EXEEXT)
+	$(AM_V_CCLD)$(ctesta_LINK) $(ctesta_OBJECTS) $(ctesta_LDADD) $(LIBS)
+
+ctesta_alloc$(EXEEXT): $(ctesta_alloc_OBJECTS) $(ctesta_alloc_DEPENDENCIES) $(EXTRA_ctesta_alloc_DEPENDENCIES) 
+	@rm -f ctesta_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(ctesta_alloc_LINK) $(ctesta_alloc_OBJECTS) $(ctesta_alloc_LDADD) $(LIBS)
+
+ctestg$(EXEEXT): $(ctestg_OBJECTS) $(ctestg_DEPENDENCIES) $(EXTRA_ctestg_DEPENDENCIES) 
+	@rm -f ctestg$(EXEEXT)
+	$(AM_V_CCLD)$(ctestg_LINK) $(ctestg_OBJECTS) $(ctestg_LDADD) $(LIBS)
+
+ctestg_alloc$(EXEEXT): $(ctestg_alloc_OBJECTS) $(ctestg_alloc_DEPENDENCIES) $(EXTRA_ctestg_alloc_DEPENDENCIES) 
+	@rm -f ctestg_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(ctestg_alloc_LINK) $(ctestg_alloc_OBJECTS) $(ctestg_alloc_LDADD) $(LIBS)
+
+dwarf5$(EXEEXT): $(dwarf5_OBJECTS) $(dwarf5_DEPENDENCIES) $(EXTRA_dwarf5_DEPENDENCIES) 
+	@rm -f dwarf5$(EXEEXT)
+	$(AM_V_CCLD)$(dwarf5_LINK) $(dwarf5_OBJECTS) $(dwarf5_LDADD) $(LIBS)
+
+dwarf5_alloc$(EXEEXT): $(dwarf5_alloc_OBJECTS) $(dwarf5_alloc_DEPENDENCIES) $(EXTRA_dwarf5_alloc_DEPENDENCIES) 
+	@rm -f dwarf5_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(dwarf5_alloc_LINK) $(dwarf5_alloc_OBJECTS) $(dwarf5_alloc_LDADD) $(LIBS)
+
+edtest$(EXEEXT): $(edtest_OBJECTS) $(edtest_DEPENDENCIES) $(EXTRA_edtest_DEPENDENCIES) 
+	@rm -f edtest$(EXEEXT)
+	$(AM_V_CCLD)$(edtest_LINK) $(edtest_OBJECTS) $(edtest_LDADD) $(LIBS)
+
+edtest_alloc$(EXEEXT): $(edtest_alloc_OBJECTS) $(edtest_alloc_DEPENDENCIES) $(EXTRA_edtest_alloc_DEPENDENCIES) 
+	@rm -f edtest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(edtest_alloc_LINK) $(edtest_alloc_OBJECTS) $(edtest_alloc_LDADD) $(LIBS)
+
+mtest$(EXEEXT): $(mtest_OBJECTS) $(mtest_DEPENDENCIES) $(EXTRA_mtest_DEPENDENCIES) 
+	@rm -f mtest$(EXEEXT)
+	$(AM_V_CCLD)$(mtest_LINK) $(mtest_OBJECTS) $(mtest_LDADD) $(LIBS)
+
+stest$(EXEEXT): $(stest_OBJECTS) $(stest_DEPENDENCIES) $(EXTRA_stest_DEPENDENCIES) 
+	@rm -f stest$(EXEEXT)
+	$(AM_V_CCLD)$(stest_LINK) $(stest_OBJECTS) $(stest_LDADD) $(LIBS)
+
+stest_alloc$(EXEEXT): $(stest_alloc_OBJECTS) $(stest_alloc_DEPENDENCIES) $(EXTRA_stest_alloc_DEPENDENCIES) 
+	@rm -f stest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(stest_alloc_LINK) $(stest_alloc_OBJECTS) $(stest_alloc_LDADD) $(LIBS)
+
+test_elf_32$(EXEEXT): $(test_elf_32_OBJECTS) $(test_elf_32_DEPENDENCIES) $(EXTRA_test_elf_32_DEPENDENCIES) 
+	@rm -f test_elf_32$(EXEEXT)
+	$(AM_V_CCLD)$(test_elf_32_LINK) $(test_elf_32_OBJECTS) $(test_elf_32_LDADD) $(LIBS)
+
+test_elf_64$(EXEEXT): $(test_elf_64_OBJECTS) $(test_elf_64_DEPENDENCIES) $(EXTRA_test_elf_64_DEPENDENCIES) 
+	@rm -f test_elf_64$(EXEEXT)
+	$(AM_V_CCLD)$(test_elf_64_LINK) $(test_elf_64_OBJECTS) $(test_elf_64_LDADD) $(LIBS)
+
+test_macho$(EXEEXT): $(test_macho_OBJECTS) $(test_macho_DEPENDENCIES) $(EXTRA_test_macho_DEPENDENCIES) 
+	@rm -f test_macho$(EXEEXT)
+	$(AM_V_CCLD)$(test_macho_LINK) $(test_macho_OBJECTS) $(test_macho_LDADD) $(LIBS)
+
+test_pecoff$(EXEEXT): $(test_pecoff_OBJECTS) $(test_pecoff_DEPENDENCIES) $(EXTRA_test_pecoff_DEPENDENCIES) 
+	@rm -f test_pecoff$(EXEEXT)
+	$(AM_V_CCLD)$(test_pecoff_LINK) $(test_pecoff_OBJECTS) $(test_pecoff_LDADD) $(LIBS)
+
+test_unknown$(EXEEXT): $(test_unknown_OBJECTS) $(test_unknown_DEPENDENCIES) $(EXTRA_test_unknown_DEPENDENCIES) 
+	@rm -f test_unknown$(EXEEXT)
+	$(AM_V_CCLD)$(test_unknown_LINK) $(test_unknown_OBJECTS) $(test_unknown_LDADD) $(LIBS)
+
+test_xcoff_32$(EXEEXT): $(test_xcoff_32_OBJECTS) $(test_xcoff_32_DEPENDENCIES) $(EXTRA_test_xcoff_32_DEPENDENCIES) 
+	@rm -f test_xcoff_32$(EXEEXT)
+	$(AM_V_CCLD)$(test_xcoff_32_LINK) $(test_xcoff_32_OBJECTS) $(test_xcoff_32_LDADD) $(LIBS)
+
+test_xcoff_64$(EXEEXT): $(test_xcoff_64_OBJECTS) $(test_xcoff_64_DEPENDENCIES) $(EXTRA_test_xcoff_64_DEPENDENCIES) 
+	@rm -f test_xcoff_64$(EXEEXT)
+	$(AM_V_CCLD)$(test_xcoff_64_LINK) $(test_xcoff_64_OBJECTS) $(test_xcoff_64_LDADD) $(LIBS)
+
+ttest$(EXEEXT): $(ttest_OBJECTS) $(ttest_DEPENDENCIES) $(EXTRA_ttest_DEPENDENCIES) 
+	@rm -f ttest$(EXEEXT)
+	$(AM_V_CCLD)$(ttest_LINK) $(ttest_OBJECTS) $(ttest_LDADD) $(LIBS)
+
+ttest_alloc$(EXEEXT): $(ttest_alloc_OBJECTS) $(ttest_alloc_DEPENDENCIES) $(EXTRA_ttest_alloc_DEPENDENCIES) 
+	@rm -f ttest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(ttest_alloc_LINK) $(ttest_alloc_OBJECTS) $(ttest_alloc_LDADD) $(LIBS)
+
+unittest$(EXEEXT): $(unittest_OBJECTS) $(unittest_DEPENDENCIES) $(EXTRA_unittest_DEPENDENCIES) 
+	@rm -f unittest$(EXEEXT)
+	$(AM_V_CCLD)$(unittest_LINK) $(unittest_OBJECTS) $(unittest_LDADD) $(LIBS)
+
+unittest_alloc$(EXEEXT): $(unittest_alloc_OBJECTS) $(unittest_alloc_DEPENDENCIES) $(EXTRA_unittest_alloc_DEPENDENCIES) 
+	@rm -f unittest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(unittest_alloc_LINK) $(unittest_alloc_OBJECTS) $(unittest_alloc_LDADD) $(LIBS)
+
+xztest$(EXEEXT): $(xztest_OBJECTS) $(xztest_DEPENDENCIES) $(EXTRA_xztest_DEPENDENCIES) 
+	@rm -f xztest$(EXEEXT)
+	$(AM_V_CCLD)$(xztest_LINK) $(xztest_OBJECTS) $(xztest_LDADD) $(LIBS)
+
+xztest_alloc$(EXEEXT): $(xztest_alloc_OBJECTS) $(xztest_alloc_DEPENDENCIES) $(EXTRA_xztest_alloc_DEPENDENCIES) 
+	@rm -f xztest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(xztest_alloc_LINK) $(xztest_alloc_OBJECTS) $(xztest_alloc_LDADD) $(LIBS)
+
+ztest$(EXEEXT): $(ztest_OBJECTS) $(ztest_DEPENDENCIES) $(EXTRA_ztest_DEPENDENCIES) 
+	@rm -f ztest$(EXEEXT)
+	$(AM_V_CCLD)$(ztest_LINK) $(ztest_OBJECTS) $(ztest_LDADD) $(LIBS)
+
+ztest_alloc$(EXEEXT): $(ztest_alloc_OBJECTS) $(ztest_alloc_DEPENDENCIES) $(EXTRA_ztest_alloc_DEPENDENCIES) 
+	@rm -f ztest_alloc$(EXEEXT)
+	$(AM_V_CCLD)$(ztest_alloc_LINK) $(ztest_alloc_OBJECTS) $(ztest_alloc_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+.c.o:
+	$(AM_V_CC)$(COMPILE) -c -o $@ $<
+
+.c.obj:
+	$(AM_V_CC)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.c.lo:
+	$(AM_V_CC)$(LTCOMPILE) -c -o $@ $<
+
+allocfail-allocfail.o: allocfail.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(allocfail_CFLAGS) $(CFLAGS) -c -o allocfail-allocfail.o `test -f 'allocfail.c' || echo '$(srcdir)/'`allocfail.c
+
+allocfail-allocfail.obj: allocfail.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(allocfail_CFLAGS) $(CFLAGS) -c -o allocfail-allocfail.obj `if test -f 'allocfail.c'; then $(CYGPATH_W) 'allocfail.c'; else $(CYGPATH_W) '$(srcdir)/allocfail.c'; fi`
+
+allocfail-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(allocfail_CFLAGS) $(CFLAGS) -c -o allocfail-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+allocfail-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(allocfail_CFLAGS) $(CFLAGS) -c -o allocfail-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+b2test-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b2test_CFLAGS) $(CFLAGS) -c -o b2test-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+b2test-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b2test_CFLAGS) $(CFLAGS) -c -o b2test-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+b2test-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b2test_CFLAGS) $(CFLAGS) -c -o b2test-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+b2test-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b2test_CFLAGS) $(CFLAGS) -c -o b2test-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+b3test-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b3test_CFLAGS) $(CFLAGS) -c -o b3test-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+b3test-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b3test_CFLAGS) $(CFLAGS) -c -o b3test-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+b3test-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b3test_CFLAGS) $(CFLAGS) -c -o b3test-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+b3test-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(b3test_CFLAGS) $(CFLAGS) -c -o b3test-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+btest-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_CFLAGS) $(CFLAGS) -c -o btest-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+btest-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_CFLAGS) $(CFLAGS) -c -o btest-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+btest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_CFLAGS) $(CFLAGS) -c -o btest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+btest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_CFLAGS) $(CFLAGS) -c -o btest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+btest_alloc-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_alloc_CFLAGS) $(CFLAGS) -c -o btest_alloc-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+btest_alloc-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_alloc_CFLAGS) $(CFLAGS) -c -o btest_alloc-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+btest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_alloc_CFLAGS) $(CFLAGS) -c -o btest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+btest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_alloc_CFLAGS) $(CFLAGS) -c -o btest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+btest_lto-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_lto_CFLAGS) $(CFLAGS) -c -o btest_lto-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+btest_lto-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_lto_CFLAGS) $(CFLAGS) -c -o btest_lto-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+btest_lto-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_lto_CFLAGS) $(CFLAGS) -c -o btest_lto-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+btest_lto-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(btest_lto_CFLAGS) $(CFLAGS) -c -o btest_lto-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ctesta-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_CFLAGS) $(CFLAGS) -c -o ctesta-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+ctesta-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_CFLAGS) $(CFLAGS) -c -o ctesta-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+ctesta-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_CFLAGS) $(CFLAGS) -c -o ctesta-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ctesta-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_CFLAGS) $(CFLAGS) -c -o ctesta-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ctesta_alloc-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_alloc_CFLAGS) $(CFLAGS) -c -o ctesta_alloc-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+ctesta_alloc-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_alloc_CFLAGS) $(CFLAGS) -c -o ctesta_alloc-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+ctesta_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_alloc_CFLAGS) $(CFLAGS) -c -o ctesta_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ctesta_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctesta_alloc_CFLAGS) $(CFLAGS) -c -o ctesta_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ctestg-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_CFLAGS) $(CFLAGS) -c -o ctestg-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+ctestg-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_CFLAGS) $(CFLAGS) -c -o ctestg-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+ctestg-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_CFLAGS) $(CFLAGS) -c -o ctestg-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ctestg-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_CFLAGS) $(CFLAGS) -c -o ctestg-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ctestg_alloc-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_alloc_CFLAGS) $(CFLAGS) -c -o ctestg_alloc-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+ctestg_alloc-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_alloc_CFLAGS) $(CFLAGS) -c -o ctestg_alloc-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+ctestg_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_alloc_CFLAGS) $(CFLAGS) -c -o ctestg_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ctestg_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ctestg_alloc_CFLAGS) $(CFLAGS) -c -o ctestg_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+dwarf5-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_CFLAGS) $(CFLAGS) -c -o dwarf5-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+dwarf5-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_CFLAGS) $(CFLAGS) -c -o dwarf5-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+dwarf5-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_CFLAGS) $(CFLAGS) -c -o dwarf5-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+dwarf5-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_CFLAGS) $(CFLAGS) -c -o dwarf5-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+dwarf5_alloc-btest.o: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_alloc_CFLAGS) $(CFLAGS) -c -o dwarf5_alloc-btest.o `test -f 'btest.c' || echo '$(srcdir)/'`btest.c
+
+dwarf5_alloc-btest.obj: btest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_alloc_CFLAGS) $(CFLAGS) -c -o dwarf5_alloc-btest.obj `if test -f 'btest.c'; then $(CYGPATH_W) 'btest.c'; else $(CYGPATH_W) '$(srcdir)/btest.c'; fi`
+
+dwarf5_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_alloc_CFLAGS) $(CFLAGS) -c -o dwarf5_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+dwarf5_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(dwarf5_alloc_CFLAGS) $(CFLAGS) -c -o dwarf5_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+edtest-edtest.o: edtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-edtest.o `test -f 'edtest.c' || echo '$(srcdir)/'`edtest.c
+
+edtest-edtest.obj: edtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-edtest.obj `if test -f 'edtest.c'; then $(CYGPATH_W) 'edtest.c'; else $(CYGPATH_W) '$(srcdir)/edtest.c'; fi`
+
+edtest-edtest2_build.o: edtest2_build.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-edtest2_build.o `test -f 'edtest2_build.c' || echo '$(srcdir)/'`edtest2_build.c
+
+edtest-edtest2_build.obj: edtest2_build.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-edtest2_build.obj `if test -f 'edtest2_build.c'; then $(CYGPATH_W) 'edtest2_build.c'; else $(CYGPATH_W) '$(srcdir)/edtest2_build.c'; fi`
+
+edtest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+edtest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_CFLAGS) $(CFLAGS) -c -o edtest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+edtest_alloc-edtest.o: edtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-edtest.o `test -f 'edtest.c' || echo '$(srcdir)/'`edtest.c
+
+edtest_alloc-edtest.obj: edtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-edtest.obj `if test -f 'edtest.c'; then $(CYGPATH_W) 'edtest.c'; else $(CYGPATH_W) '$(srcdir)/edtest.c'; fi`
+
+edtest_alloc-edtest2_build.o: edtest2_build.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-edtest2_build.o `test -f 'edtest2_build.c' || echo '$(srcdir)/'`edtest2_build.c
+
+edtest_alloc-edtest2_build.obj: edtest2_build.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-edtest2_build.obj `if test -f 'edtest2_build.c'; then $(CYGPATH_W) 'edtest2_build.c'; else $(CYGPATH_W) '$(srcdir)/edtest2_build.c'; fi`
+
+edtest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+edtest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(edtest_alloc_CFLAGS) $(CFLAGS) -c -o edtest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+mtest-mtest.o: mtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-mtest.o `test -f 'mtest.c' || echo '$(srcdir)/'`mtest.c
+
+mtest-mtest.obj: mtest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-mtest.obj `if test -f 'mtest.c'; then $(CYGPATH_W) 'mtest.c'; else $(CYGPATH_W) '$(srcdir)/mtest.c'; fi`
+
+mtest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+mtest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(mtest_CFLAGS) $(CFLAGS) -c -o mtest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+stest-stest.o: stest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(stest_CFLAGS) $(CFLAGS) -c -o stest-stest.o `test -f 'stest.c' || echo '$(srcdir)/'`stest.c
+
+stest-stest.obj: stest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(stest_CFLAGS) $(CFLAGS) -c -o stest-stest.obj `if test -f 'stest.c'; then $(CYGPATH_W) 'stest.c'; else $(CYGPATH_W) '$(srcdir)/stest.c'; fi`
+
+stest_alloc-stest.o: stest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(stest_alloc_CFLAGS) $(CFLAGS) -c -o stest_alloc-stest.o `test -f 'stest.c' || echo '$(srcdir)/'`stest.c
+
+stest_alloc-stest.obj: stest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(stest_alloc_CFLAGS) $(CFLAGS) -c -o stest_alloc-stest.obj `if test -f 'stest.c'; then $(CYGPATH_W) 'stest.c'; else $(CYGPATH_W) '$(srcdir)/stest.c'; fi`
+
+test_elf_32-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_32_CFLAGS) $(CFLAGS) -c -o test_elf_32-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_elf_32-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_32_CFLAGS) $(CFLAGS) -c -o test_elf_32-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_elf_32-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_32_CFLAGS) $(CFLAGS) -c -o test_elf_32-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_elf_32-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_32_CFLAGS) $(CFLAGS) -c -o test_elf_32-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_elf_64-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_64_CFLAGS) $(CFLAGS) -c -o test_elf_64-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_elf_64-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_64_CFLAGS) $(CFLAGS) -c -o test_elf_64-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_elf_64-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_64_CFLAGS) $(CFLAGS) -c -o test_elf_64-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_elf_64-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_elf_64_CFLAGS) $(CFLAGS) -c -o test_elf_64-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_macho-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_macho_CFLAGS) $(CFLAGS) -c -o test_macho-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_macho-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_macho_CFLAGS) $(CFLAGS) -c -o test_macho-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_macho-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_macho_CFLAGS) $(CFLAGS) -c -o test_macho-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_macho-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_macho_CFLAGS) $(CFLAGS) -c -o test_macho-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_pecoff-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_pecoff_CFLAGS) $(CFLAGS) -c -o test_pecoff-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_pecoff-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_pecoff_CFLAGS) $(CFLAGS) -c -o test_pecoff-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_pecoff-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_pecoff_CFLAGS) $(CFLAGS) -c -o test_pecoff-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_pecoff-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_pecoff_CFLAGS) $(CFLAGS) -c -o test_pecoff-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_unknown-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_unknown_CFLAGS) $(CFLAGS) -c -o test_unknown-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_unknown-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_unknown_CFLAGS) $(CFLAGS) -c -o test_unknown-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_unknown-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_unknown_CFLAGS) $(CFLAGS) -c -o test_unknown-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_unknown-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_unknown_CFLAGS) $(CFLAGS) -c -o test_unknown-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_xcoff_32-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_32_CFLAGS) $(CFLAGS) -c -o test_xcoff_32-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_xcoff_32-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_32_CFLAGS) $(CFLAGS) -c -o test_xcoff_32-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_xcoff_32-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_32_CFLAGS) $(CFLAGS) -c -o test_xcoff_32-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_xcoff_32-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_32_CFLAGS) $(CFLAGS) -c -o test_xcoff_32-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+test_xcoff_64-test_format.o: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_64_CFLAGS) $(CFLAGS) -c -o test_xcoff_64-test_format.o `test -f 'test_format.c' || echo '$(srcdir)/'`test_format.c
+
+test_xcoff_64-test_format.obj: test_format.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_64_CFLAGS) $(CFLAGS) -c -o test_xcoff_64-test_format.obj `if test -f 'test_format.c'; then $(CYGPATH_W) 'test_format.c'; else $(CYGPATH_W) '$(srcdir)/test_format.c'; fi`
+
+test_xcoff_64-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_64_CFLAGS) $(CFLAGS) -c -o test_xcoff_64-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+test_xcoff_64-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(test_xcoff_64_CFLAGS) $(CFLAGS) -c -o test_xcoff_64-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ttest-ttest.o: ttest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_CFLAGS) $(CFLAGS) -c -o ttest-ttest.o `test -f 'ttest.c' || echo '$(srcdir)/'`ttest.c
+
+ttest-ttest.obj: ttest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_CFLAGS) $(CFLAGS) -c -o ttest-ttest.obj `if test -f 'ttest.c'; then $(CYGPATH_W) 'ttest.c'; else $(CYGPATH_W) '$(srcdir)/ttest.c'; fi`
+
+ttest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_CFLAGS) $(CFLAGS) -c -o ttest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ttest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_CFLAGS) $(CFLAGS) -c -o ttest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ttest_alloc-ttest.o: ttest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_alloc_CFLAGS) $(CFLAGS) -c -o ttest_alloc-ttest.o `test -f 'ttest.c' || echo '$(srcdir)/'`ttest.c
+
+ttest_alloc-ttest.obj: ttest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_alloc_CFLAGS) $(CFLAGS) -c -o ttest_alloc-ttest.obj `if test -f 'ttest.c'; then $(CYGPATH_W) 'ttest.c'; else $(CYGPATH_W) '$(srcdir)/ttest.c'; fi`
+
+ttest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_alloc_CFLAGS) $(CFLAGS) -c -o ttest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ttest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ttest_alloc_CFLAGS) $(CFLAGS) -c -o ttest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+unittest-unittest.o: unittest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_CFLAGS) $(CFLAGS) -c -o unittest-unittest.o `test -f 'unittest.c' || echo '$(srcdir)/'`unittest.c
+
+unittest-unittest.obj: unittest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_CFLAGS) $(CFLAGS) -c -o unittest-unittest.obj `if test -f 'unittest.c'; then $(CYGPATH_W) 'unittest.c'; else $(CYGPATH_W) '$(srcdir)/unittest.c'; fi`
+
+unittest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_CFLAGS) $(CFLAGS) -c -o unittest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+unittest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_CFLAGS) $(CFLAGS) -c -o unittest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+unittest_alloc-unittest.o: unittest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_alloc_CFLAGS) $(CFLAGS) -c -o unittest_alloc-unittest.o `test -f 'unittest.c' || echo '$(srcdir)/'`unittest.c
+
+unittest_alloc-unittest.obj: unittest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_alloc_CFLAGS) $(CFLAGS) -c -o unittest_alloc-unittest.obj `if test -f 'unittest.c'; then $(CYGPATH_W) 'unittest.c'; else $(CYGPATH_W) '$(srcdir)/unittest.c'; fi`
+
+unittest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_alloc_CFLAGS) $(CFLAGS) -c -o unittest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+unittest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(unittest_alloc_CFLAGS) $(CFLAGS) -c -o unittest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+xztest-xztest.o: xztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-xztest.o `test -f 'xztest.c' || echo '$(srcdir)/'`xztest.c
+
+xztest-xztest.obj: xztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-xztest.obj `if test -f 'xztest.c'; then $(CYGPATH_W) 'xztest.c'; else $(CYGPATH_W) '$(srcdir)/xztest.c'; fi`
+
+xztest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+xztest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_CFLAGS) $(CFLAGS) -c -o xztest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+xztest_alloc-xztest.o: xztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-xztest.o `test -f 'xztest.c' || echo '$(srcdir)/'`xztest.c
+
+xztest_alloc-xztest.obj: xztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-xztest.obj `if test -f 'xztest.c'; then $(CYGPATH_W) 'xztest.c'; else $(CYGPATH_W) '$(srcdir)/xztest.c'; fi`
+
+xztest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+xztest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(xztest_alloc_CFLAGS) $(CFLAGS) -c -o xztest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ztest-ztest.o: ztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_CFLAGS) $(CFLAGS) -c -o ztest-ztest.o `test -f 'ztest.c' || echo '$(srcdir)/'`ztest.c
+
+ztest-ztest.obj: ztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_CFLAGS) $(CFLAGS) -c -o ztest-ztest.obj `if test -f 'ztest.c'; then $(CYGPATH_W) 'ztest.c'; else $(CYGPATH_W) '$(srcdir)/ztest.c'; fi`
+
+ztest-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_CFLAGS) $(CFLAGS) -c -o ztest-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ztest-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_CFLAGS) $(CFLAGS) -c -o ztest-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+ztest_alloc-ztest.o: ztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_alloc_CFLAGS) $(CFLAGS) -c -o ztest_alloc-ztest.o `test -f 'ztest.c' || echo '$(srcdir)/'`ztest.c
+
+ztest_alloc-ztest.obj: ztest.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_alloc_CFLAGS) $(CFLAGS) -c -o ztest_alloc-ztest.obj `if test -f 'ztest.c'; then $(CYGPATH_W) 'ztest.c'; else $(CYGPATH_W) '$(srcdir)/ztest.c'; fi`
+
+ztest_alloc-testlib.o: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_alloc_CFLAGS) $(CFLAGS) -c -o ztest_alloc-testlib.o `test -f 'testlib.c' || echo '$(srcdir)/'`testlib.c
+
+ztest_alloc-testlib.obj: testlib.c
+	$(AM_V_CC)$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(ztest_alloc_CFLAGS) $(CFLAGS) -c -o ztest_alloc-testlib.obj `if test -f 'testlib.c'; then $(CYGPATH_W) 'testlib.c'; else $(CYGPATH_W) '$(srcdir)/testlib.c'; fi`
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+distclean-libtool:
+	-rm -f libtool config.lt
+install-includeHEADERS: $(include_HEADERS)
+	@$(NORMAL_INSTALL)
+	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(includedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(includedir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(includedir)'"; \
+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(includedir)" || exit $$?; \
+	done
+
+uninstall-includeHEADERS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(includedir)'; $(am__uninstall_files_from_dir)
+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	set x; \
+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscope: cscope.files
+	test ! -s cscope.files \
+	  || $(CSCOPE) -b -q $(AM_CSCOPEFLAGS) $(CSCOPEFLAGS) -i cscope.files $(CSCOPE_ARGS)
+clean-cscope:
+	-rm -f cscope.files
+cscope.files: clean-cscope cscopelist
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
+
+# Recover from deleted '.trs' file; this should ensure that
+# "rm -f foo.log; make foo.trs" re-run 'foo.test', and re-create
+# both 'foo.log' and 'foo.trs'.  Break the recipe in two subshells
+# to avoid problems with "make -n".
+.log.trs:
+	rm -f $< $@
+	$(MAKE) $(AM_MAKEFLAGS) $<
+
+# Leading 'am--fnord' is there to ensure the list of targets does not
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+am--fnord $(TEST_LOGS) $(TEST_LOGS:.log=.trs): $(am__force_recheck)
+am--force-recheck:
+	@:
+
+$(TEST_SUITE_LOG): $(TEST_LOGS)
+	@$(am__set_TESTS_bases); \
+	am__f_ok () { test -f "$$1" && test -r "$$1"; }; \
+	redo_bases=`for i in $$bases; do \
+	              am__f_ok $$i.trs && am__f_ok $$i.log || echo $$i; \
+	            done`; \
+	if test -n "$$redo_bases"; then \
+	  redo_logs=`for i in $$redo_bases; do echo $$i.log; done`; \
+	  redo_results=`for i in $$redo_bases; do echo $$i.trs; done`; \
+	  if $(am__make_dryrun); then :; else \
+	    rm -f $$redo_logs && rm -f $$redo_results || exit 1; \
+	  fi; \
+	fi; \
+	if test -n "$$am__remaking_logs"; then \
+	  echo "fatal: making $(TEST_SUITE_LOG): possible infinite" \
+	       "recursion detected" >&2; \
+	elif test -n "$$redo_logs"; then \
+	  am__remaking_logs=yes $(MAKE) $(AM_MAKEFLAGS) $$redo_logs; \
+	fi; \
+	if $(am__make_dryrun); then :; else \
+	  st=0;  \
+	  errmsg="fatal: making $(TEST_SUITE_LOG): failed to create"; \
+	  for i in $$redo_bases; do \
+	    test -f $$i.trs && test -r $$i.trs \
+	      || { echo "$$errmsg $$i.trs" >&2; st=1; }; \
+	    test -f $$i.log && test -r $$i.log \
+	      || { echo "$$errmsg $$i.log" >&2; st=1; }; \
+	  done; \
+	  test $$st -eq 0 || exit 1; \
+	fi
+	@$(am__sh_e_setup); $(am__tty_colors); $(am__set_TESTS_bases); \
+	ws='[ 	]'; \
+	results=`for b in $$bases; do echo $$b.trs; done`; \
+	test -n "$$results" || results=/dev/null; \
+	all=`  grep "^$$ws*:test-result:"           $$results | wc -l`; \
+	pass=` grep "^$$ws*:test-result:$$ws*PASS"  $$results | wc -l`; \
+	fail=` grep "^$$ws*:test-result:$$ws*FAIL"  $$results | wc -l`; \
+	skip=` grep "^$$ws*:test-result:$$ws*SKIP"  $$results | wc -l`; \
+	xfail=`grep "^$$ws*:test-result:$$ws*XFAIL" $$results | wc -l`; \
+	xpass=`grep "^$$ws*:test-result:$$ws*XPASS" $$results | wc -l`; \
+	error=`grep "^$$ws*:test-result:$$ws*ERROR" $$results | wc -l`; \
+	if test `expr $$fail + $$xpass + $$error` -eq 0; then \
+	  success=true; \
+	else \
+	  success=false; \
+	fi; \
+	br='==================='; br=$$br$$br$$br$$br; \
+	result_count () \
+	{ \
+	    if test x"$$1" = x"--maybe-color"; then \
+	      maybe_colorize=yes; \
+	    elif test x"$$1" = x"--no-color"; then \
+	      maybe_colorize=no; \
+	    else \
+	      echo "$@: invalid 'result_count' usage" >&2; exit 4; \
+	    fi; \
+	    shift; \
+	    desc=$$1 count=$$2; \
+	    if test $$maybe_colorize = yes && test $$count -gt 0; then \
+	      color_start=$$3 color_end=$$std; \
+	    else \
+	      color_start= color_end=; \
+	    fi; \
+	    echo "$${color_start}# $$desc $$count$${color_end}"; \
+	}; \
+	create_testsuite_report () \
+	{ \
+	  result_count $$1 "TOTAL:" $$all   "$$brg"; \
+	  result_count $$1 "PASS: " $$pass  "$$grn"; \
+	  result_count $$1 "SKIP: " $$skip  "$$blu"; \
+	  result_count $$1 "XFAIL:" $$xfail "$$lgn"; \
+	  result_count $$1 "FAIL: " $$fail  "$$red"; \
+	  result_count $$1 "XPASS:" $$xpass "$$red"; \
+	  result_count $$1 "ERROR:" $$error "$$mgn"; \
+	}; \
+	{								\
+	  echo "$(PACKAGE_STRING): $(subdir)/$(TEST_SUITE_LOG)" |	\
+	    $(am__rst_title);						\
+	  create_testsuite_report --no-color;				\
+	  echo;								\
+	  echo ".. contents:: :depth: 2";				\
+	  echo;								\
+	  for b in $$bases; do echo $$b; done				\
+	    | $(am__create_global_log);					\
+	} >$(TEST_SUITE_LOG).tmp || exit 1;				\
+	mv $(TEST_SUITE_LOG).tmp $(TEST_SUITE_LOG);			\
+	if $$success; then						\
+	  col="$$grn";							\
+	 else								\
+	  col="$$red";							\
+	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
+	fi;								\
+	echo "$${col}$$br$${std}"; 					\
+	echo "$${col}Testsuite summary for $(PACKAGE_STRING)$${std}";	\
+	echo "$${col}$$br$${std}"; 					\
+	create_testsuite_report --maybe-color;				\
+	echo "$$col$$br$$std";						\
+	if $$success; then :; else					\
+	  echo "$${col}See $(subdir)/$(TEST_SUITE_LOG)$${std}";		\
+	  if test -n "$(PACKAGE_BUGREPORT)"; then			\
+	    echo "$${col}Please report to $(PACKAGE_BUGREPORT)$${std}";	\
+	  fi;								\
+	  echo "$$col$$br$$std";					\
+	fi;								\
+	$$success || exit 1
+
+check-TESTS:
+	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
+	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	trs_list=`for i in $$bases; do echo $$i.trs; done`; \
+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) TEST_LOGS="$$log_list"; \
+	exit $$?;
+recheck: all $(check_LTLIBRARIES) $(check_PROGRAMS) $(check_DATA)
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+allocfail.sh.log: allocfail.sh
+	@p='allocfail.sh'; \
+	b='allocfail.sh'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+b2test_buildid.log: b2test_buildid
+	@p='b2test_buildid'; \
+	b='b2test_buildid'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+b3test_dwz_buildid.log: b3test_dwz_buildid
+	@p='b3test_dwz_buildid'; \
+	b='b3test_dwz_buildid'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest_dwz.log: btest_dwz
+	@p='btest_dwz'; \
+	b='btest_dwz'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest_dwz_gnudebuglink.log: btest_dwz_gnudebuglink
+	@p='btest_dwz_gnudebuglink'; \
+	b='btest_dwz_gnudebuglink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest_gnudebuglink.log: btest_gnudebuglink
+	@p='btest_gnudebuglink'; \
+	b='btest_gnudebuglink'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mtest_minidebug.log: mtest_minidebug
+	@p='mtest_minidebug'; \
+	b='mtest_minidebug'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_elf_32.log: test_elf_32$(EXEEXT)
+	@p='test_elf_32$(EXEEXT)'; \
+	b='test_elf_32'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_elf_64.log: test_elf_64$(EXEEXT)
+	@p='test_elf_64$(EXEEXT)'; \
+	b='test_elf_64'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_macho.log: test_macho$(EXEEXT)
+	@p='test_macho$(EXEEXT)'; \
+	b='test_macho'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_xcoff_32.log: test_xcoff_32$(EXEEXT)
+	@p='test_xcoff_32$(EXEEXT)'; \
+	b='test_xcoff_32'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_xcoff_64.log: test_xcoff_64$(EXEEXT)
+	@p='test_xcoff_64$(EXEEXT)'; \
+	b='test_xcoff_64'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_pecoff.log: test_pecoff$(EXEEXT)
+	@p='test_pecoff$(EXEEXT)'; \
+	b='test_pecoff'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+test_unknown.log: test_unknown$(EXEEXT)
+	@p='test_unknown$(EXEEXT)'; \
+	b='test_unknown'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+unittest.log: unittest$(EXEEXT)
+	@p='unittest$(EXEEXT)'; \
+	b='unittest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+unittest_alloc.log: unittest_alloc$(EXEEXT)
+	@p='unittest_alloc$(EXEEXT)'; \
+	b='unittest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest.log: btest$(EXEEXT)
+	@p='btest$(EXEEXT)'; \
+	b='btest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest_lto.log: btest_lto$(EXEEXT)
+	@p='btest_lto$(EXEEXT)'; \
+	b='btest_lto'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+btest_alloc.log: btest_alloc$(EXEEXT)
+	@p='btest_alloc$(EXEEXT)'; \
+	b='btest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+stest.log: stest$(EXEEXT)
+	@p='stest$(EXEEXT)'; \
+	b='stest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+stest_alloc.log: stest_alloc$(EXEEXT)
+	@p='stest_alloc$(EXEEXT)'; \
+	b='stest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ztest.log: ztest$(EXEEXT)
+	@p='ztest$(EXEEXT)'; \
+	b='ztest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ztest_alloc.log: ztest_alloc$(EXEEXT)
+	@p='ztest_alloc$(EXEEXT)'; \
+	b='ztest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+edtest.log: edtest$(EXEEXT)
+	@p='edtest$(EXEEXT)'; \
+	b='edtest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+edtest_alloc.log: edtest_alloc$(EXEEXT)
+	@p='edtest_alloc$(EXEEXT)'; \
+	b='edtest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ttest.log: ttest$(EXEEXT)
+	@p='ttest$(EXEEXT)'; \
+	b='ttest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ttest_alloc.log: ttest_alloc$(EXEEXT)
+	@p='ttest_alloc$(EXEEXT)'; \
+	b='ttest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ctestg.log: ctestg$(EXEEXT)
+	@p='ctestg$(EXEEXT)'; \
+	b='ctestg'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ctesta.log: ctesta$(EXEEXT)
+	@p='ctesta$(EXEEXT)'; \
+	b='ctesta'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ctestg_alloc.log: ctestg_alloc$(EXEEXT)
+	@p='ctestg_alloc$(EXEEXT)'; \
+	b='ctestg_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+ctesta_alloc.log: ctesta_alloc$(EXEEXT)
+	@p='ctesta_alloc$(EXEEXT)'; \
+	b='ctesta_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dwarf5.log: dwarf5$(EXEEXT)
+	@p='dwarf5$(EXEEXT)'; \
+	b='dwarf5'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+dwarf5_alloc.log: dwarf5_alloc$(EXEEXT)
+	@p='dwarf5_alloc$(EXEEXT)'; \
+	b='dwarf5_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+mtest.log: mtest$(EXEEXT)
+	@p='mtest$(EXEEXT)'; \
+	b='mtest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+xztest.log: xztest$(EXEEXT)
+	@p='xztest$(EXEEXT)'; \
+	b='xztest'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+xztest_alloc.log: xztest_alloc$(EXEEXT)
+	@p='xztest_alloc$(EXEEXT)'; \
+	b='xztest_alloc'; \
+	$(am__check_pre) $(LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_LOG_DRIVER_FLAGS) $(LOG_DRIVER_FLAGS) -- $(LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+.test.log:
+	@p='$<'; \
+	$(am__set_b); \
+	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+@am__EXEEXT_TRUE@.test$(EXEEXT).log:
+@am__EXEEXT_TRUE@	@p='$<'; \
+@am__EXEEXT_TRUE@	$(am__set_b); \
+@am__EXEEXT_TRUE@	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+@am__EXEEXT_TRUE@	--log-file $$b.log --trs-file $$b.trs \
+@am__EXEEXT_TRUE@	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+@am__EXEEXT_TRUE@	"$$tst" $(AM_TESTS_FD_REDIRECT)
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) $(check_LTLIBRARIES) $(check_PROGRAMS) \
+	  $(check_DATA)
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(HEADERS) config.h
+installdirs:
+	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(includedir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-checkLTLIBRARIES clean-checkPROGRAMS clean-generic \
+	clean-libLTLIBRARIES clean-libtool clean-local mostlyclean-am
+
+distclean: distclean-am
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-hdr distclean-libtool distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-includeHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-includeHEADERS uninstall-libLTLIBRARIES
+
+.MAKE: all check-am install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--refresh check check-TESTS \
+	check-am clean clean-checkLTLIBRARIES clean-checkPROGRAMS \
+	clean-cscope clean-generic clean-libLTLIBRARIES clean-libtool \
+	clean-local cscope cscopelist-am ctags ctags-am distclean \
+	distclean-compile distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags dvi dvi-am html html-am info \
+	info-am install install-am install-data install-data-am \
+	install-dvi install-dvi-am install-exec install-exec-am \
+	install-html install-html-am install-includeHEADERS \
+	install-info install-info-am install-libLTLIBRARIES \
+	install-man install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am recheck tags tags-am \
+	uninstall uninstall-am uninstall-includeHEADERS \
+	uninstall-libLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+@USE_DSYMUTIL_TRUE@%.dSYM: %
+@USE_DSYMUTIL_TRUE@	$(DSYMUTIL) $<
+
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@elf_for_test.c: elf.c
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	SEARCH='^#define SYSTEM_BUILD_ID_DIR.*$$'; \
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	REPLACE="#define SYSTEM_BUILD_ID_DIR \"$(TEST_BUILD_ID_DIR)\""; \
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	$(SED) "s%$$SEARCH%$$REPLACE%" \
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@		$< \
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@		> $@.tmp
+@HAVE_ELF_TRUE@@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	mv $@.tmp $@
+
+@NATIVE_TRUE@elf_%.c: elf.c
+@NATIVE_TRUE@	SEARCH='#error "Unknown BACKTRACE_ELF_SIZE"'; \
+@NATIVE_TRUE@	REPLACE='#undef BACKTRACE_ELF_SIZE\
+@NATIVE_TRUE@	#define BACKTRACE_ELF_SIZE'; \
+@NATIVE_TRUE@	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+@NATIVE_TRUE@		$< \
+@NATIVE_TRUE@		> $@.tmp
+@NATIVE_TRUE@	mv $@.tmp $@
+
+@NATIVE_TRUE@xcoff_%.c: xcoff.c
+@NATIVE_TRUE@	SEARCH='#error "Unknown BACKTRACE_XCOFF_SIZE"'; \
+@NATIVE_TRUE@	REPLACE='#undef BACKTRACE_XCOFF_SIZE\
+@NATIVE_TRUE@	#define BACKTRACE_XCOFF_SIZE'; \
+@NATIVE_TRUE@	$(SED) "s/^$$SEARCH\$$/$$REPLACE $*/" \
+@NATIVE_TRUE@		$< \
+@NATIVE_TRUE@		> $@.tmp
+@NATIVE_TRUE@	mv $@.tmp $@
+
+@NATIVE_TRUE@instrumented_alloc.lo: alloc.c
+
+@NATIVE_TRUE@allocfail.sh: allocfail
+
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@%_dwz: %
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	rm -f $@ $@_common.debug
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	cp $< $@_1
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	cp $< $@_2
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	if $(DWZ) -m $@_common.debug $@_1 $@_2; then \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	  rm -f $@_2; \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	  mv $@_1 $@; \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	else \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	  echo "Ignoring dwz errors, assuming that test passes"; \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	  cp $< $@; \
+@HAVE_DWZ_TRUE@@NATIVE_TRUE@	fi
+
+@NATIVE_TRUE@edtest2_build.c: gen_edtest2_build; @true
+@NATIVE_TRUE@gen_edtest2_build: $(srcdir)/edtest2.c
+@NATIVE_TRUE@	cat $(srcdir)/edtest2.c > tmp-edtest2_build.c
+@NATIVE_TRUE@	$(SHELL) $(srcdir)/move-if-change tmp-edtest2_build.c edtest2_build.c
+@NATIVE_TRUE@	echo timestamp > $@
+
+@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@%_gnudebuglink: %
+@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	$(OBJCOPY) --only-keep-debug $< $@.debug
+@HAVE_OBJCOPY_DEBUGLINK_TRUE@@NATIVE_TRUE@	$(OBJCOPY) --strip-debug --add-gnu-debuglink=$@.debug $< $@
+
+@NATIVE_TRUE@%_buildid: %
+@NATIVE_TRUE@	./install-debuginfo-for-buildid.sh \
+@NATIVE_TRUE@	  "$(TEST_BUILD_ID_DIR)" \
+@NATIVE_TRUE@	  $<
+@NATIVE_TRUE@	$(OBJCOPY) --strip-debug $< $@
+
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@%_minidebug: %
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	$(NM) -D $< -P --defined-only | $(AWK) '{ print $$1 }' | sort > $<.dsyms
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	$(NM) $< -P --defined-only | $(AWK) '{ if ($$2 == "T" || $$2 == "t" || $$2 == "D") print $$1 }' | sort > $<.fsyms
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+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	rm -f $<.mdbg.xz
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	$(XZ) $<.mdbg
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	$(OBJCOPY) --add-section .gnu_debugdata=$<.mdbg.xz $<.strip
+@HAVE_MINIDEBUG_TRUE@@NATIVE_TRUE@	mv $<.strip $@
+
+clean-local:
+	-rm -rf usr
+
+# We can't use automake's automatic dependency tracking, because it
+# breaks when using bootstrap-lean.  Automatic dependency tracking
+# with GCC bootstrap will cause some of the objects to depend on
+# header files in prev-gcc/include, e.g., stddef.h and stdarg.h.  When
+# using bootstrap-lean, prev-gcc is removed after each stage.  When
+# running "make install", those header files will be gone, causing the
+# library to be rebuilt at install time.  That may not succeed.
+
+# These manual dependencies do not include dependencies on unwind.h,
+# even though that is part of GCC, because where to find it depends on
+# whether we are being built as a host library or a target library.
+
+alloc.lo: config.h backtrace.h internal.h
+backtrace.lo: config.h backtrace.h internal.h
+btest.lo: filenames.h backtrace.h backtrace-supported.h
+dwarf.lo: config.h filenames.h backtrace.h internal.h
+elf.lo: config.h backtrace.h internal.h
+fileline.lo: config.h backtrace.h internal.h
+macho.lo: config.h backtrace.h internal.h
+mmap.lo: config.h backtrace.h internal.h
+mmapio.lo: config.h backtrace.h internal.h
+mtest.lo: backtrace.h backtrace-supported.h
+nounwind.lo: config.h internal.h
+pecoff.lo: config.h backtrace.h internal.h
+posix.lo: config.h backtrace.h internal.h
+print.lo: config.h backtrace.h internal.h
+read.lo: config.h backtrace.h internal.h
+simple.lo: config.h backtrace.h internal.h
+sort.lo: config.h backtrace.h internal.h
+stest.lo: config.h backtrace.h internal.h
+state.lo: config.h backtrace.h backtrace-supported.h internal.h
+unknown.lo: config.h backtrace.h internal.h
+xcoff.lo: config.h backtrace.h internal.h
+xztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h
+ztest.lo: config.h backtrace.h backtrace-supported.h internal.h testlib.h
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/README.md b/fluent-bit/lib/libbacktrace-8602fda/README.md
new file mode 100644
index 000000000..c82834d17
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/README.md
@@ -0,0 +1,36 @@
+# libbacktrace
+A C library that may be linked into a C/C++ program to produce symbolic backtraces
+
+Initially written by Ian Lance Taylor <iant@golang.org>.
+
+This is version 1.0.
+It is likely that this will always be version 1.0.
+
+The libbacktrace library may be linked into a program or library and
+used to produce symbolic backtraces.
+Sample uses would be to print a detailed backtrace when an error
+occurs or to gather detailed profiling information.
+In general the functions provided by this library are async-signal-safe,
+meaning that they may be safely called from a signal handler.
+
+The libbacktrace library is provided under a BSD license.
+See the source files for the exact license text.
+
+The public functions are declared and documented in the header file
+backtrace.h, which should be #include'd by a user of the library.
+
+Building libbacktrace will generate a file backtrace-supported.h,
+which a user of the library may use to determine whether backtraces
+will work.
+See the source file backtrace-supported.h.in for the macros that it
+defines.
+
+As of October 2020, libbacktrace supports ELF, PE/COFF, Mach-O, and
+XCOFF executables with DWARF debugging information.
+In other words, it supports GNU/Linux, *BSD, macOS, Windows, and AIX.
+The library is written to make it straightforward to add support for
+other object file and debugging formats.
+
+The library relies on the C++ unwind API defined at
+https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html
+This API is provided by GCC and clang.
diff --git a/fluent-bit/lib/libbacktrace-8602fda/aclocal.m4 b/fluent-bit/lib/libbacktrace-8602fda/aclocal.m4
new file mode 100644
index 000000000..16042129f
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/aclocal.m4
@@ -0,0 +1,864 @@
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+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
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+  esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+AC_SUBST([install_sh])])
+
+# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
+# From Jim Meyering
+
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless 'enable' is passed literally.
+# For symmetry, 'disable' may be passed as well.  Anyway, the user
+# can override the default with the --enable/--disable switch.
+AC_DEFUN([AM_MAINTAINER_MODE],
+[m4_case(m4_default([$1], [disable]),
+       [enable], [m4_define([am_maintainer_other], [disable])],
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+       [m4_define([am_maintainer_other], [enable])
+        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
+  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+  AC_ARG_ENABLE([maintainer-mode],
+    [AS_HELP_STRING([--]am_maintainer_other[-maintainer-mode],
+      am_maintainer_other[ make rules and dependencies not useful
+      (and sometimes confusing) to the casual installer])],
+    [USE_MAINTAINER_MODE=$enableval],
+    [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
+  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
+  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
+  MAINT=$MAINTAINER_MODE_TRUE
+  AC_SUBST([MAINT])dnl
+]
+)
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+# AM_MISSING_HAS_RUN
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+# Define MISSING if not defined so far and test if it is modern enough.
+# If it is, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
+# Use eval to expand $SHELL
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+  am_missing_run="$MISSING "
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+  am_missing_run=
+  AC_MSG_WARN(['missing' script is too old or missing])
+fi
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
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+# _AM_SET_OPTION(NAME)
+# --------------------
+# Set option NAME.  Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ------------------------
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+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
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+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_CC_C_O
+# ---------------
+# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
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+AC_DEFUN([_AM_PROG_CC_C_O],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([compile])dnl
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+  [whether $CC understands -c and -o together],
+  [am_cv_prog_cc_c_o],
+  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i])
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+AC_LANG_POP([C])])
+
+# For backward compatibility.
+AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_RUN_LOG(COMMAND)
+# -------------------
+# Run COMMAND, save the exit status in ac_status, and log it.
+# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+AC_DEFUN([AM_RUN_LOG],
+[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
+   ($1) >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   (exit $ac_status); }])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Reject unsafe characters in $srcdir or the absolute working directory
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+am_lf='
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+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
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+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$[*]" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$[*]" != "X $srcdir/configure conftest.file" \
+	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment])
+     fi
+     if test "$[2]" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT([yes])
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+AC_CONFIG_COMMANDS_PRE(
+  [AC_MSG_CHECKING([that generated files are newer than configure])
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   AC_MSG_RESULT([done])])
+rm -f conftest.file
+])
+
+# Copyright (C) 2009-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SILENT_RULES([DEFAULT])
+# --------------------------
+# Enable less verbose build rules; with the default set to DEFAULT
+# ("yes" being less verbose, "no" or empty being verbose).
+AC_DEFUN([AM_SILENT_RULES],
+[AC_ARG_ENABLE([silent-rules], [dnl
+AS_HELP_STRING(
+  [--enable-silent-rules],
+  [less verbose build output (undo: "make V=1")])
+AS_HELP_STRING(
+  [--disable-silent-rules],
+  [verbose build output (undo: "make V=0")])dnl
+])
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+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+esac
+dnl
+dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
+dnl do not support nested variable expansions.
+dnl See automake bug#9928 and bug#10237.
+am_make=${MAKE-make}
+AC_CACHE_CHECK([whether $am_make supports nested variables],
+   [am_cv_make_support_nested_variables],
+   [if AS_ECHO([['TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi])
+if test $am_cv_make_support_nested_variables = yes; then
+  dnl Using '$V' instead of '$(V)' breaks IRIX make.
+  AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AC_SUBST([AM_V])dnl
+AM_SUBST_NOTMAKE([AM_V])dnl
+AC_SUBST([AM_DEFAULT_V])dnl
+AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
+AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
+AM_BACKSLASH='\'
+AC_SUBST([AM_BACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
+])
+
+# Copyright (C) 2001-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor 'install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in "make install-strip", and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# --------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004-2017 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of 'v7', 'ustar', or 'pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+#
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AC_SUBST([AMTAR], ['$${TAR-tar}'])
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+
+m4_if([$1], [v7],
+  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+
+  [m4_case([$1],
+    [ustar],
+     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
+      # There is notably a 21 bits limit for the UID and the GID.  In fact,
+      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
+      # and bug#13588).
+      am_max_uid=2097151 # 2^21 - 1
+      am_max_gid=$am_max_uid
+      # The $UID and $GID variables are not portable, so we need to resort
+      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
+      # below are definitely unexpected, so allow the users to see them
+      # (that is, avoid stderr redirection).
+      am_uid=`id -u || echo unknown`
+      am_gid=`id -g || echo unknown`
+      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
+      if test $am_uid -le $am_max_uid; then
+         AC_MSG_RESULT([yes])
+      else
+         AC_MSG_RESULT([no])
+         _am_tools=none
+      fi
+      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
+      if test $am_gid -le $am_max_gid; then
+         AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no])
+        _am_tools=none
+      fi],
+
+  [pax],
+    [],
+
+  [m4_fatal([Unknown tar format])])
+
+  AC_MSG_CHECKING([how to create a $1 tar archive])
+
+  # Go ahead even if we have the value already cached.  We do so because we
+  # need to set the values for the 'am__tar' and 'am__untar' variables.
+  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
+
+  for _am_tool in $_am_tools; do
+    case $_am_tool in
+    gnutar)
+      for _am_tar in tar gnutar gtar; do
+        AM_RUN_LOG([$_am_tar --version]) && break
+      done
+      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+      am__untar="$_am_tar -xf -"
+      ;;
+    plaintar)
+      # Must skip GNU tar: if it does not support --format= it doesn't create
+      # ustar tarball either.
+      (tar --version) >/dev/null 2>&1 && continue
+      am__tar='tar chf - "$$tardir"'
+      am__tar_='tar chf - "$tardir"'
+      am__untar='tar xf -'
+      ;;
+    pax)
+      am__tar='pax -L -x $1 -w "$$tardir"'
+      am__tar_='pax -L -x $1 -w "$tardir"'
+      am__untar='pax -r'
+      ;;
+    cpio)
+      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+      am__untar='cpio -i -H $1 -d'
+      ;;
+    none)
+      am__tar=false
+      am__tar_=false
+      am__untar=false
+      ;;
+    esac
+
+    # If the value was cached, stop now.  We just wanted to have am__tar
+    # and am__untar set.
+    test -n "${am_cv_prog_tar_$1}" && break
+
+    # tar/untar a dummy directory, and stop if the command works.
+    rm -rf conftest.dir
+    mkdir conftest.dir
+    echo GrepMe > conftest.dir/file
+    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+    rm -rf conftest.dir
+    if test -s conftest.tar; then
+      AM_RUN_LOG([$am__untar <conftest.tar])
+      AM_RUN_LOG([cat conftest.dir/file])
+      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+    fi
+  done
+  rm -rf conftest.dir
+
+  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
+m4_include([config/lead-dot.m4])
+m4_include([config/libtool.m4])
+m4_include([config/ltoptions.m4])
+m4_include([config/ltsugar.m4])
+m4_include([config/ltversion.m4])
+m4_include([config/lt~obsolete.m4])
+m4_include([config/multi.m4])
+m4_include([config/override.m4])
+m4_include([config/unwind_ipinfo.m4])
+m4_include([config/warnings.m4])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/alloc.c b/fluent-bit/lib/libbacktrace-8602fda/alloc.c
new file mode 100644
index 000000000..ff2c8677c
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/alloc.c
@@ -0,0 +1,167 @@
+/* alloc.c -- Memory allocation without mmap.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Allocation routines to use on systems that do not support anonymous
+   mmap.  This implementation just uses malloc, which means that the
+   backtrace functions may not be safely invoked from a signal
+   handler.  */
+
+/* Allocate memory like malloc.  If ERROR_CALLBACK is NULL, don't
+   report an error.  */
+
+void *
+backtrace_alloc (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		 size_t size, backtrace_error_callback error_callback,
+		 void *data)
+{
+  void *ret;
+
+  ret = malloc (size);
+  if (ret == NULL)
+    {
+      if (error_callback)
+	error_callback (data, "malloc", errno);
+    }
+  return ret;
+}
+
+/* Free memory.  */
+
+void
+backtrace_free (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		void *p, size_t size ATTRIBUTE_UNUSED,
+		backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+		void *data ATTRIBUTE_UNUSED)
+{
+  free (p);
+}
+
+/* Grow VEC by SIZE bytes.  */
+
+void *
+backtrace_vector_grow (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		       size_t size, backtrace_error_callback error_callback,
+		       void *data, struct backtrace_vector *vec)
+{
+  void *ret;
+
+  if (size > vec->alc)
+    {
+      size_t alc;
+      void *base;
+
+      if (vec->size == 0)
+	alc = 32 * size;
+      else if (vec->size >= 4096)
+	alc = vec->size + 4096;
+      else
+	alc = 2 * vec->size;
+
+      if (alc < vec->size + size)
+	alc = vec->size + size;
+
+      base = realloc (vec->base, alc);
+      if (base == NULL)
+	{
+	  error_callback (data, "realloc", errno);
+	  return NULL;
+	}
+
+      vec->base = base;
+      vec->alc = alc - vec->size;
+    }
+
+  ret = (char *) vec->base + vec->size;
+  vec->size += size;
+  vec->alc -= size;
+  return ret;
+}
+
+/* Finish the current allocation on VEC.  */
+
+void *
+backtrace_vector_finish (struct backtrace_state *state,
+			 struct backtrace_vector *vec,
+			 backtrace_error_callback error_callback,
+			 void *data)
+{
+  void *ret;
+
+  /* With this allocator we call realloc in backtrace_vector_grow,
+     which means we can't easily reuse the memory here.  So just
+     release it.  */
+  if (!backtrace_vector_release (state, vec, error_callback, data))
+    return NULL;
+  ret = vec->base;
+  vec->base = NULL;
+  vec->size = 0;
+  vec->alc = 0;
+  return ret;
+}
+
+/* Release any extra space allocated for VEC.  */
+
+int
+backtrace_vector_release (struct backtrace_state *state ATTRIBUTE_UNUSED,
+			  struct backtrace_vector *vec,
+			  backtrace_error_callback error_callback,
+			  void *data)
+{
+  vec->alc = 0;
+
+  if (vec->size == 0)
+    {
+      /* As of C17, realloc with size 0 is marked as an obsolescent feature, use
+	 free instead.  */
+      free (vec->base);
+      vec->base = NULL;
+      return 1;
+    }
+
+  vec->base = realloc (vec->base, vec->size);
+  if (vec->base == NULL)
+    {
+      error_callback (data, "realloc", errno);
+      return 0;
+    }
+
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/allocfail.c b/fluent-bit/lib/libbacktrace-8602fda/allocfail.c
new file mode 100644
index 000000000..bd0fbb658
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/allocfail.c
@@ -0,0 +1,136 @@
+/* allocfail.c -- Test for libbacktrace library
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+extern uint64_t get_nr_allocs (void);
+extern void set_fail_at_alloc (uint64_t);
+extern int at_fail_alloc_p (void);
+
+static int test1 (void) __attribute__ ((noinline, unused));
+static int f2 (int) __attribute__ ((noinline));
+static int f3 (int, int) __attribute__ ((noinline));
+
+static unsigned callback_errors = 0;
+
+static void
+error_callback_full (void *vdata ATTRIBUTE_UNUSED,
+		     const char *msg ATTRIBUTE_UNUSED,
+		     int errnum ATTRIBUTE_UNUSED)
+{
+  if (at_fail_alloc_p ())
+    {
+      set_fail_at_alloc (0);
+      return;
+    }
+
+  callback_errors++;
+}
+
+static int
+callback_full (void *vdata ATTRIBUTE_UNUSED, uintptr_t pc ATTRIBUTE_UNUSED,
+	      const char *filename ATTRIBUTE_UNUSED,
+	      int lineno ATTRIBUTE_UNUSED,
+	      const char *function ATTRIBUTE_UNUSED)
+{
+
+  return 0;
+}
+
+static int
+test1 (void)
+{
+  return f2 (__LINE__) + 1;
+}
+
+static int
+f2 (int f1line)
+{
+  return f3 (f1line, __LINE__) + 2;
+}
+
+static int
+f3 (int f1line ATTRIBUTE_UNUSED, int f2line ATTRIBUTE_UNUSED)
+{
+  int i;
+
+  i = backtrace_full (state, 0, callback_full, error_callback_full, NULL);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test1: unexpected return value %d\n", i);
+      ++failures;
+    }
+
+  if (callback_errors)
+      ++failures;
+
+  return failures;
+}
+
+/* Run all the tests.  */
+
+int
+main (int argc, char **argv)
+{
+  uint64_t fail_at = 0;
+
+  if (argc == 2)
+    {
+      fail_at = atoi (argv[1]);
+      set_fail_at_alloc (fail_at);
+    }
+
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_full, NULL);
+  if (state == NULL)
+    exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+
+#if BACKTRACE_SUPPORTED
+  test1 ();
+#endif
+
+  if (argc == 1)
+    fprintf (stderr, "%llu\n", (long long unsigned) get_nr_allocs ());
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/allocfail.sh b/fluent-bit/lib/libbacktrace-8602fda/allocfail.sh
new file mode 100755
index 000000000..1f9894fd2
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/allocfail.sh
@@ -0,0 +1,104 @@
+#!/bin/sh
+
+# allocfail.sh -- Test for libbacktrace library.
+# Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+set -e
+
+if [ ! -f ./allocfail ]; then
+    # Hard failure.
+    exit 99
+fi
+
+allocs=$(./allocfail 2>&1)
+if [ "$allocs" = "" ]; then
+    # Hard failure.
+    exit 99
+fi
+
+# This generates the following output:
+# ...
+# $ allocfail.sh
+# allocs: 80495
+# Status changed to 0 at 1
+# Status changed to 1 at 3
+# Status changed to 0 at 11
+# Status changed to 1 at 12
+# Status changed to 0 at 845
+# ...
+#
+# We have status 0 for an allocation failure at:
+# - 1 because backtrace_create_state handles failure robustly
+# - 2 because the fail switches backtrace_full to !can_alloc mode.
+# - 11 because failure of elf_open_debugfile_by_buildid does not generate an
+#   error callback beyond the one for the allocation failure itself.
+
+echo "allocs: $allocs"
+
+step=1
+i=1
+passes=0
+prev_status=-1
+while [ $i -le $allocs ]; do
+    if ./allocfail $i >/dev/null 2>&1; status=$?; then
+	true
+    fi
+    if [ $status -gt 1 ]; then
+	echo "Unallowed fail found: $i"
+	# Failure.
+	exit 1
+    fi
+
+    # The test-case would run too long if we would excercise all allocs.
+    # So, run with step 1 initially, and increase the step once we have 10
+    # subsequent passes, and drop back to step 1 once we encounter another
+    # failure.  This takes ~2.6 seconds on an i7-6600U CPU @ 2.60GHz.
+    if [ $status -eq 0 ]; then
+	passes=$(($passes + 1))
+	if [ $passes -ge 10 ]; then
+	    step=$((step * 10))
+	    passes=0
+	fi
+    elif [ $status -eq 1 ]; then
+	passes=0
+	step=1
+    fi
+
+    if [ $status -ne $prev_status ]; then
+	echo "Status changed to $status at $i"
+    fi
+    prev_status=$status
+
+    i=$(($i + $step))
+done
+
+# Success.
+exit 0
diff --git a/fluent-bit/lib/libbacktrace-8602fda/atomic.c b/fluent-bit/lib/libbacktrace-8602fda/atomic.c
new file mode 100644
index 000000000..fcac485b2
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/atomic.c
@@ -0,0 +1,113 @@
+/* atomic.c -- Support for atomic functions if not present.
+   Copyright (C) 2013-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+#include "internal.h"
+
+/* This file holds implementations of the atomic functions that are
+   used if the host compiler has the sync functions but not the atomic
+   functions, as is true of versions of GCC before 4.7.  */
+
+#if !defined (HAVE_ATOMIC_FUNCTIONS) && defined (HAVE_SYNC_FUNCTIONS)
+
+/* Do an atomic load of a pointer.  */
+
+void *
+backtrace_atomic_load_pointer (void *arg)
+{
+  void **pp;
+  void *p;
+
+  pp = (void **) arg;
+  p = *pp;
+  while (!__sync_bool_compare_and_swap (pp, p, p))
+    p = *pp;
+  return p;
+}
+
+/* Do an atomic load of an int.  */
+
+int
+backtrace_atomic_load_int (int *p)
+{
+  int i;
+
+  i = *p;
+  while (!__sync_bool_compare_and_swap (p, i, i))
+    i = *p;
+  return i;
+}
+
+/* Do an atomic store of a pointer.  */
+
+void
+backtrace_atomic_store_pointer (void *arg, void *p)
+{
+  void **pp;
+  void *old;
+
+  pp = (void **) arg;
+  old = *pp;
+  while (!__sync_bool_compare_and_swap (pp, old, p))
+    old = *pp;
+}
+
+/* Do an atomic store of a size_t value.  */
+
+void
+backtrace_atomic_store_size_t (size_t *p, size_t v)
+{
+  size_t old;
+
+  old = *p;
+  while (!__sync_bool_compare_and_swap (p, old, v))
+    old = *p;
+}
+
+/* Do an atomic store of a int value.  */
+
+void
+backtrace_atomic_store_int (int *p, int v)
+{
+  size_t old;
+
+  old = *p;
+  while (!__sync_bool_compare_and_swap (p, old, v))
+    old = *p;
+}
+
+#endif
diff --git a/fluent-bit/lib/libbacktrace-8602fda/backtrace-supported.h.in b/fluent-bit/lib/libbacktrace-8602fda/backtrace-supported.h.in
new file mode 100644
index 000000000..2035c853a
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/backtrace-supported.h.in
@@ -0,0 +1,66 @@
+/* backtrace-supported.h.in -- Whether stack backtrace is supported.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* The file backtrace-supported.h.in is used by configure to generate
+   the file backtrace-supported.h.  The file backtrace-supported.h may
+   be #include'd to see whether the backtrace library will be able to
+   get a backtrace and produce symbolic information.  */
+
+
+/* BACKTRACE_SUPPORTED will be #define'd as 1 if the backtrace library
+   should work, 0 if it will not.  Libraries may #include this to make
+   other arrangements.  */
+
+#define BACKTRACE_SUPPORTED @BACKTRACE_SUPPORTED@
+
+/* BACKTRACE_USES_MALLOC will be #define'd as 1 if the backtrace
+   library will call malloc as it works, 0 if it will call mmap
+   instead.  This may be used to determine whether it is safe to call
+   the backtrace functions from a signal handler.  In general this
+   only applies to calls like backtrace and backtrace_pcinfo.  It does
+   not apply to backtrace_simple, which never calls malloc.  It does
+   not apply to backtrace_print, which always calls fprintf and
+   therefore malloc.  */
+
+#define BACKTRACE_USES_MALLOC @BACKTRACE_USES_MALLOC@
+
+/* BACKTRACE_SUPPORTS_THREADS will be #define'd as 1 if the backtrace
+   library is configured with threading support, 0 if not.  If this is
+   0, the threaded parameter to backtrace_create_state must be passed
+   as 0.  */
+
+#define BACKTRACE_SUPPORTS_THREADS @BACKTRACE_SUPPORTS_THREADS@
+
+/* BACKTRACE_SUPPORTS_DATA will be #defined'd as 1 if the backtrace_syminfo
+   will work for variables.  It will always work for functions.  */
+
+#define BACKTRACE_SUPPORTS_DATA @BACKTRACE_SUPPORTS_DATA@
diff --git a/fluent-bit/lib/libbacktrace-8602fda/backtrace.c b/fluent-bit/lib/libbacktrace-8602fda/backtrace.c
new file mode 100644
index 000000000..7b6290085
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/backtrace.c
@@ -0,0 +1,129 @@
+/* backtrace.c -- Entry point for stack backtrace library.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include "unwind.h"
+#include "backtrace.h"
+#include "internal.h"
+
+/* The main backtrace_full routine.  */
+
+/* Data passed through _Unwind_Backtrace.  */
+
+struct backtrace_data
+{
+  /* Number of frames to skip.  */
+  int skip;
+  /* Library state.  */
+  struct backtrace_state *state;
+  /* Callback routine.  */
+  backtrace_full_callback callback;
+  /* Error callback routine.  */
+  backtrace_error_callback error_callback;
+  /* Data to pass to callback routines.  */
+  void *data;
+  /* Value to return from backtrace_full.  */
+  int ret;
+  /* Whether there is any memory available.  */
+  int can_alloc;
+};
+
+/* Unwind library callback routine.  This is passed to
+   _Unwind_Backtrace.  */
+
+static _Unwind_Reason_Code
+unwind (struct _Unwind_Context *context, void *vdata)
+{
+  struct backtrace_data *bdata = (struct backtrace_data *) vdata;
+  uintptr_t pc;
+  int ip_before_insn = 0;
+
+#ifdef HAVE_GETIPINFO
+  pc = _Unwind_GetIPInfo (context, &ip_before_insn);
+#else
+  pc = _Unwind_GetIP (context);
+#endif
+
+  if (bdata->skip > 0)
+    {
+      --bdata->skip;
+      return _URC_NO_REASON;
+    }
+
+  if (!ip_before_insn)
+    --pc;
+
+  if (!bdata->can_alloc)
+    bdata->ret = bdata->callback (bdata->data, pc, NULL, 0, NULL);
+  else
+    bdata->ret = backtrace_pcinfo (bdata->state, pc, bdata->callback,
+				   bdata->error_callback, bdata->data);
+  if (bdata->ret != 0)
+    return _URC_END_OF_STACK;
+
+  return _URC_NO_REASON;
+}
+
+/* Get a stack backtrace.  */
+
+int __attribute__((noinline))
+backtrace_full (struct backtrace_state *state, int skip,
+		backtrace_full_callback callback,
+		backtrace_error_callback error_callback, void *data)
+{
+  struct backtrace_data bdata;
+  void *p;
+
+  bdata.skip = skip + 1;
+  bdata.state = state;
+  bdata.callback = callback;
+  bdata.error_callback = error_callback;
+  bdata.data = data;
+  bdata.ret = 0;
+
+  /* If we can't allocate any memory at all, don't try to produce
+     file/line information.  */
+  p = backtrace_alloc (state, 4096, NULL, NULL);
+  if (p == NULL)
+    bdata.can_alloc = 0;
+  else
+    {
+      backtrace_free (state, p, 4096, NULL, NULL);
+      bdata.can_alloc = 1;
+    }
+
+  _Unwind_Backtrace (unwind, &bdata);
+  return bdata.ret;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/backtrace.h b/fluent-bit/lib/libbacktrace-8602fda/backtrace.h
new file mode 100644
index 000000000..69cea4ca1
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/backtrace.h
@@ -0,0 +1,189 @@
+/* backtrace.h -- Public header file for stack backtrace library.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#ifndef BACKTRACE_H
+#define BACKTRACE_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* The backtrace state.  This struct is intentionally not defined in
+   the public interface.  */
+
+struct backtrace_state;
+
+/* The type of the error callback argument to backtrace functions.
+   This function, if not NULL, will be called for certain error cases.
+   The DATA argument is passed to the function that calls this one.
+   The MSG argument is an error message.  The ERRNUM argument, if
+   greater than 0, holds an errno value.  The MSG buffer may become
+   invalid after this function returns.
+
+   As a special case, the ERRNUM argument will be passed as -1 if no
+   debug info can be found for the executable, or if the debug info
+   exists but has an unsupported version, but the function requires
+   debug info (e.g., backtrace_full, backtrace_pcinfo).  The MSG in
+   this case will be something along the lines of "no debug info".
+   Similarly, ERRNUM will be passed as -1 if there is no symbol table,
+   but the function requires a symbol table (e.g., backtrace_syminfo).
+   This may be used as a signal that some other approach should be
+   tried.  */
+
+typedef void (*backtrace_error_callback) (void *data, const char *msg,
+					  int errnum);
+
+/* Create state information for the backtrace routines.  This must be
+   called before any of the other routines, and its return value must
+   be passed to all of the other routines.  FILENAME is the path name
+   of the executable file; if it is NULL the library will try
+   system-specific path names.  If not NULL, FILENAME must point to a
+   permanent buffer.  If THREADED is non-zero the state may be
+   accessed by multiple threads simultaneously, and the library will
+   use appropriate atomic operations.  If THREADED is zero the state
+   may only be accessed by one thread at a time.  This returns a state
+   pointer on success, NULL on error.  If an error occurs, this will
+   call the ERROR_CALLBACK routine.
+
+   Calling this function allocates resources that cannot be freed.
+   There is no backtrace_free_state function.  The state is used to
+   cache information that is expensive to recompute.  Programs are
+   expected to call this function at most once and to save the return
+   value for all later calls to backtrace functions.  */
+
+extern struct backtrace_state *backtrace_create_state (
+    const char *filename, int threaded,
+    backtrace_error_callback error_callback, void *data);
+
+/* The type of the callback argument to the backtrace_full function.
+   DATA is the argument passed to backtrace_full.  PC is the program
+   counter.  FILENAME is the name of the file containing PC, or NULL
+   if not available.  LINENO is the line number in FILENAME containing
+   PC, or 0 if not available.  FUNCTION is the name of the function
+   containing PC, or NULL if not available.  This should return 0 to
+   continuing tracing.  The FILENAME and FUNCTION buffers may become
+   invalid after this function returns.  */
+
+typedef int (*backtrace_full_callback) (void *data, uintptr_t pc,
+					const char *filename, int lineno,
+					const char *function);
+
+/* Get a full stack backtrace.  SKIP is the number of frames to skip;
+   passing 0 will start the trace with the function calling
+   backtrace_full.  DATA is passed to the callback routine.  If any
+   call to CALLBACK returns a non-zero value, the stack backtrace
+   stops, and backtrace returns that value; this may be used to limit
+   the number of stack frames desired.  If all calls to CALLBACK
+   return 0, backtrace returns 0.  The backtrace_full function will
+   make at least one call to either CALLBACK or ERROR_CALLBACK.  This
+   function requires debug info for the executable.  */
+
+extern int backtrace_full (struct backtrace_state *state, int skip,
+			   backtrace_full_callback callback,
+			   backtrace_error_callback error_callback,
+			   void *data);
+
+/* The type of the callback argument to the backtrace_simple function.
+   DATA is the argument passed to simple_backtrace.  PC is the program
+   counter.  This should return 0 to continue tracing.  */
+
+typedef int (*backtrace_simple_callback) (void *data, uintptr_t pc);
+
+/* Get a simple backtrace.  SKIP is the number of frames to skip, as
+   in backtrace.  DATA is passed to the callback routine.  If any call
+   to CALLBACK returns a non-zero value, the stack backtrace stops,
+   and backtrace_simple returns that value.  Otherwise
+   backtrace_simple returns 0.  The backtrace_simple function will
+   make at least one call to either CALLBACK or ERROR_CALLBACK.  This
+   function does not require any debug info for the executable.  */
+
+extern int backtrace_simple (struct backtrace_state *state, int skip,
+			     backtrace_simple_callback callback,
+			     backtrace_error_callback error_callback,
+			     void *data);
+
+/* Print the current backtrace in a user readable format to a FILE.
+   SKIP is the number of frames to skip, as in backtrace_full.  Any
+   error messages are printed to stderr.  This function requires debug
+   info for the executable.  */
+
+extern void backtrace_print (struct backtrace_state *state, int skip, FILE *);
+
+/* Given PC, a program counter in the current program, call the
+   callback function with filename, line number, and function name
+   information.  This will normally call the callback function exactly
+   once.  However, if the PC happens to describe an inlined call, and
+   the debugging information contains the necessary information, then
+   this may call the callback function multiple times.  This will make
+   at least one call to either CALLBACK or ERROR_CALLBACK.  This
+   returns the first non-zero value returned by CALLBACK, or 0.  */
+
+extern int backtrace_pcinfo (struct backtrace_state *state, uintptr_t pc,
+			     backtrace_full_callback callback,
+			     backtrace_error_callback error_callback,
+			     void *data);
+
+/* The type of the callback argument to backtrace_syminfo.  DATA and
+   PC are the arguments passed to backtrace_syminfo.  SYMNAME is the
+   name of the symbol for the corresponding code.  SYMVAL is the
+   value and SYMSIZE is the size of the symbol.  SYMNAME will be NULL
+   if no error occurred but the symbol could not be found.  */
+
+typedef void (*backtrace_syminfo_callback) (void *data, uintptr_t pc,
+					    const char *symname,
+					    uintptr_t symval,
+					    uintptr_t symsize);
+
+/* Given ADDR, an address or program counter in the current program,
+   call the callback information with the symbol name and value
+   describing the function or variable in which ADDR may be found.
+   This will call either CALLBACK or ERROR_CALLBACK exactly once.
+   This returns 1 on success, 0 on failure.  This function requires
+   the symbol table but does not require the debug info.  Note that if
+   the symbol table is present but ADDR could not be found in the
+   table, CALLBACK will be called with a NULL SYMNAME argument.
+   Returns 1 on success, 0 on error.  */
+
+extern int backtrace_syminfo (struct backtrace_state *state, uintptr_t addr,
+			      backtrace_syminfo_callback callback,
+			      backtrace_error_callback error_callback,
+			      void *data);
+
+#ifdef __cplusplus
+} /* End extern "C".  */
+#endif
+
+#endif
diff --git a/fluent-bit/lib/libbacktrace-8602fda/btest.c b/fluent-bit/lib/libbacktrace-8602fda/btest.c
new file mode 100644
index 000000000..9f9c03bab
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/btest.c
@@ -0,0 +1,501 @@
+/* btest.c -- Test for libbacktrace library
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* This program tests the externally visible interfaces of the
+   libbacktrace library.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+/* Test the backtrace function with non-inlined functions.  */
+
+static int test1 (void) __attribute__ ((noinline, noclone, unused));
+static int f2 (int) __attribute__ ((noinline, noclone));
+static int f3 (int, int) __attribute__ ((noinline, noclone));
+
+static int
+test1 (void)
+{
+  /* Returning a value here and elsewhere avoids a tailcall which
+     would mess up the backtrace.  */
+  return f2 (__LINE__) + 1;
+}
+
+static int
+f2 (int f1line)
+{
+  return f3 (f1line, __LINE__) + 2;
+}
+
+static int
+f3 (int f1line, int f2line)
+{
+  struct info all[20];
+  struct bdata data;
+  int f3line;
+  int i;
+
+  data.all = &all[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test1: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (data.index < 3)
+    {
+      fprintf (stderr,
+	       "test1: not enough frames; got %zu, expected at least 3\n",
+	       data.index);
+      data.failed = 1;
+    }
+
+  check ("test1", 0, all, f3line, "f3", "btest.c", &data.failed);
+  check ("test1", 1, all, f2line, "f2", "btest.c", &data.failed);
+  check ("test1", 2, all, f1line, "test1", "btest.c", &data.failed);
+
+  printf ("%s: backtrace_full noinline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+/* Test the backtrace function with inlined functions.  */
+
+static inline int test2 (void) __attribute__ ((always_inline, unused));
+static inline int f12 (int) __attribute__ ((always_inline));
+static inline int f13 (int, int) __attribute__ ((always_inline));
+
+static inline int
+test2 (void)
+{
+  return f12 (__LINE__) + 1;
+}
+
+static inline int
+f12 (int f1line)
+{
+  return f13 (f1line, __LINE__) + 2;
+}
+
+static inline int
+f13 (int f1line, int f2line)
+{
+  struct info all[20];
+  struct bdata data;
+  int f3line;
+  int i;
+
+  data.all = &all[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test2: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  check ("test2", 0, all, f3line, "f13", "btest.c", &data.failed);
+  check ("test2", 1, all, f2line, "f12", "btest.c", &data.failed);
+  check ("test2", 2, all, f1line, "test2", "btest.c", &data.failed);
+
+  printf ("%s: backtrace_full inline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+/* Test the backtrace_simple function with non-inlined functions.  */
+
+static int test3 (void) __attribute__ ((noinline, noclone, unused));
+static int f22 (int) __attribute__ ((noinline, noclone));
+static int f23 (int, int) __attribute__ ((noinline, noclone));
+
+static int
+test3 (void)
+{
+  return f22 (__LINE__) + 1;
+}
+
+static int
+f22 (int f1line)
+{
+  return f23 (f1line, __LINE__) + 2;
+}
+
+static int
+f23 (int f1line, int f2line)
+{
+  uintptr_t addrs[20];
+  struct sdata data;
+  int f3line;
+  int i;
+
+  data.addrs = &addrs[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_simple (state, 0, callback_two, error_callback_two, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test3: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (!data.failed)
+    {
+      struct info all[20];
+      struct bdata bdata;
+      int j;
+
+      bdata.all = &all[0];
+      bdata.index = 0;
+      bdata.max = 20;
+      bdata.failed = 0;
+
+      for (j = 0; j < 3; ++j)
+	{
+	  i = backtrace_pcinfo (state, addrs[j], callback_one,
+				error_callback_one, &bdata);
+	  if (i != 0)
+	    {
+	      fprintf (stderr,
+		       ("test3: unexpected return value "
+			"from backtrace_pcinfo %d\n"),
+		       i);
+	      bdata.failed = 1;
+	    }
+	  if (!bdata.failed && bdata.index != (size_t) (j + 1))
+	    {
+	      fprintf (stderr,
+		       ("wrong number of calls from backtrace_pcinfo "
+			"got %u expected %d\n"),
+		       (unsigned int) bdata.index, j + 1);
+	      bdata.failed = 1;
+	    }
+	}
+
+      check ("test3", 0, all, f3line, "f23", "btest.c", &bdata.failed);
+      check ("test3", 1, all, f2line, "f22", "btest.c", &bdata.failed);
+      check ("test3", 2, all, f1line, "test3", "btest.c", &bdata.failed);
+
+      if (bdata.failed)
+	data.failed = 1;
+
+      for (j = 0; j < 3; ++j)
+	{
+	  struct symdata symdata;
+
+	  symdata.name = NULL;
+	  symdata.val = 0;
+	  symdata.size = 0;
+	  symdata.failed = 0;
+
+	  i = backtrace_syminfo (state, addrs[j], callback_three,
+				 error_callback_three, &symdata);
+	  if (i == 0)
+	    {
+	      fprintf (stderr,
+		       ("test3: [%d]: unexpected return value "
+			"from backtrace_syminfo %d\n"),
+		       j, i);
+	      symdata.failed = 1;
+	    }
+
+	  if (!symdata.failed)
+	    {
+	      const char *expected;
+
+	      switch (j)
+		{
+		case 0:
+		  expected = "f23";
+		  break;
+		case 1:
+		  expected = "f22";
+		  break;
+		case 2:
+		  expected = "test3";
+		  break;
+		default:
+		  assert (0);
+		}
+
+	      if (symdata.name == NULL)
+		{
+		  fprintf (stderr, "test3: [%d]: NULL syminfo name\n", j);
+		  symdata.failed = 1;
+		}
+	      /* Use strncmp, not strcmp, because GCC might create a
+		 clone.  */
+	      else if (strncmp (symdata.name, expected, strlen (expected))
+		       != 0)
+		{
+		  fprintf (stderr,
+			   ("test3: [%d]: unexpected syminfo name "
+			    "got %s expected %s\n"),
+			   j, symdata.name, expected);
+		  symdata.failed = 1;
+		}
+	    }
+
+	  if (symdata.failed)
+	    data.failed = 1;
+	}
+    }
+
+  printf ("%s: backtrace_simple noinline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+/* Test the backtrace_simple function with inlined functions.  */
+
+static inline int test4 (void) __attribute__ ((always_inline, unused));
+static inline int f32 (int) __attribute__ ((always_inline));
+static inline int f33 (int, int) __attribute__ ((always_inline));
+
+static inline int
+test4 (void)
+{
+  return f32 (__LINE__) + 1;
+}
+
+static inline int
+f32 (int f1line)
+{
+  return f33 (f1line, __LINE__) + 2;
+}
+
+static inline int
+f33 (int f1line, int f2line)
+{
+  uintptr_t addrs[20];
+  struct sdata data;
+  int f3line;
+  int i;
+
+  data.addrs = &addrs[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_simple (state, 0, callback_two, error_callback_two, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test3: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (!data.failed)
+    {
+      struct info all[20];
+      struct bdata bdata;
+
+      bdata.all = &all[0];
+      bdata.index = 0;
+      bdata.max = 20;
+      bdata.failed = 0;
+
+      i = backtrace_pcinfo (state, addrs[0], callback_one, error_callback_one,
+			    &bdata);
+      if (i != 0)
+	{
+	  fprintf (stderr,
+		   ("test4: unexpected return value "
+		    "from backtrace_pcinfo %d\n"),
+		   i);
+	  bdata.failed = 1;
+	}
+
+      check ("test4", 0, all, f3line, "f33", "btest.c", &bdata.failed);
+      check ("test4", 1, all, f2line, "f32", "btest.c", &bdata.failed);
+      check ("test4", 2, all, f1line, "test4", "btest.c", &bdata.failed);
+
+      if (bdata.failed)
+	data.failed = 1;
+    }
+
+  printf ("%s: backtrace_simple inline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+static int test5 (void) __attribute__ ((unused));
+
+int global = 1;
+
+static int
+test5 (void)
+{
+  struct symdata symdata;
+  int i;
+  uintptr_t addr = (uintptr_t) &global;
+
+  if (sizeof (global) > 1)
+    addr += 1;
+
+  symdata.name = NULL;
+  symdata.val = 0;
+  symdata.size = 0;
+  symdata.failed = 0;
+
+  i = backtrace_syminfo (state, addr, callback_three,
+			 error_callback_three, &symdata);
+  if (i == 0)
+    {
+      fprintf (stderr,
+	       "test5: unexpected return value from backtrace_syminfo %d\n",
+	       i);
+      symdata.failed = 1;
+    }
+
+  if (!symdata.failed)
+    {
+      if (symdata.name == NULL)
+	{
+	  fprintf (stderr, "test5: NULL syminfo name\n");
+	  symdata.failed = 1;
+	}
+      else if (!(strncmp (symdata.name, "global", 6) == 0
+		 && (symdata.name[6] == '\0'|| symdata.name[6] == '.')))
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo name got %s expected %s\n",
+		   symdata.name, "global");
+	  symdata.failed = 1;
+	}
+      else if (symdata.val != (uintptr_t) &global)
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo value got %lx expected %lx\n",
+		   (unsigned long) symdata.val,
+		   (unsigned long) (uintptr_t) &global);
+	  symdata.failed = 1;
+	}
+      else if (symdata.size != sizeof (global))
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo size got %lx expected %lx\n",
+		   (unsigned long) symdata.size,
+		   (unsigned long) sizeof (global));
+	  symdata.failed = 1;
+	}
+    }
+
+  printf ("%s: backtrace_syminfo variable\n",
+	  symdata.failed ? "FAIL" : "PASS");
+
+  if (symdata.failed)
+    ++failures;
+
+  return failures;
+}
+
+/* Check that are no files left open.  */
+
+static void
+check_open_files (void)
+{
+  int i;
+
+  for (i = 3; i < 10; i++)
+    {
+      if (close (i) == 0)
+	{
+	  fprintf (stderr,
+		   "ERROR: descriptor %d still open after tests complete\n",
+		   i);
+	  ++failures;
+	}
+    }
+}
+
+/* Run all the tests.  */
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+#if BACKTRACE_SUPPORTED
+  test1 ();
+  test2 ();
+  test3 ();
+  test4 ();
+#if BACKTRACE_SUPPORTS_DATA
+  test5 ();
+#endif
+#endif
+
+  check_open_files ();
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/compile b/fluent-bit/lib/libbacktrace-8602fda/compile
new file mode 100755
index 000000000..2ab71e4ea
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/compile
@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2016-01-11.22; # UTC
+
+# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config.guess b/fluent-bit/lib/libbacktrace-8602fda/config.guess
new file mode 100755
index 000000000..1972fda8e
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config.guess
@@ -0,0 +1,1700 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+timestamp='2021-01-25'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+#
+# Originally written by Per Bothner; maintained since 2000 by Ben Elliston.
+#
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+#
+# Please send patches to <config-patches@gnu.org>.
+
+
+me=$(echo "$0" | sed -e 's,.*/,,')
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+tmp=
+# shellcheck disable=SC2172
+trap 'test -z "$tmp" || rm -fr "$tmp"' 0 1 2 13 15
+
+set_cc_for_build() {
+    # prevent multiple calls if $tmp is already set
+    test "$tmp" && return 0
+    : "${TMPDIR=/tmp}"
+    # shellcheck disable=SC2039
+    { tmp=$( (umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null) && test -n "$tmp" && test -d "$tmp" ; } ||
+	{ test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir "$tmp" 2>/dev/null) ; } ||
+	{ tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+	{ echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; }
+    dummy=$tmp/dummy
+    case ${CC_FOR_BUILD-},${HOST_CC-},${CC-} in
+	,,)    echo "int x;" > "$dummy.c"
+	       for driver in cc gcc c89 c99 ; do
+		   if ($driver -c -o "$dummy.o" "$dummy.c") >/dev/null 2>&1 ; then
+		       CC_FOR_BUILD="$driver"
+		       break
+		   fi
+	       done
+	       if test x"$CC_FOR_BUILD" = x ; then
+		   CC_FOR_BUILD=no_compiler_found
+	       fi
+	       ;;
+	,,*)   CC_FOR_BUILD=$CC ;;
+	,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+    esac
+}
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if test -f /.attbin/uname ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=$( (uname -m) 2>/dev/null) || UNAME_MACHINE=unknown
+UNAME_RELEASE=$( (uname -r) 2>/dev/null) || UNAME_RELEASE=unknown
+UNAME_SYSTEM=$( (uname -s) 2>/dev/null) || UNAME_SYSTEM=unknown
+UNAME_VERSION=$( (uname -v) 2>/dev/null) || UNAME_VERSION=unknown
+
+case "$UNAME_SYSTEM" in
+Linux|GNU|GNU/*)
+	LIBC=unknown
+
+	set_cc_for_build
+	cat <<-EOF > "$dummy.c"
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#elif defined(__GLIBC__)
+	LIBC=gnu
+	#else
+	#include <stdarg.h>
+	/* First heuristic to detect musl libc.  */
+	#ifdef __DEFINED_va_list
+	LIBC=musl
+	#endif
+	#endif
+	EOF
+	eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, ,,g')"
+
+	# Second heuristic to detect musl libc.
+	if [ "$LIBC" = unknown ] &&
+	   command -v ldd >/dev/null &&
+	   ldd --version 2>&1 | grep -q ^musl; then
+		LIBC=musl
+	fi
+
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	if [ "$LIBC" = unknown ]; then
+		LIBC=gnu
+	fi
+	;;
+esac
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	UNAME_MACHINE_ARCH=$( (uname -p 2>/dev/null || \
+	    /sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    /usr/sbin/sysctl -n hw.machine_arch 2>/dev/null || \
+	    echo unknown))
+	case "$UNAME_MACHINE_ARCH" in
+	    aarch64eb) machine=aarch64_be-unknown ;;
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    earmv*)
+		arch=$(echo "$UNAME_MACHINE_ARCH" | sed -e 's,^e\(armv[0-9]\).*$,\1,')
+		endian=$(echo "$UNAME_MACHINE_ARCH" | sed -ne 's,^.*\(eb\)$,\1,p')
+		machine="${arch}${endian}"-unknown
+		;;
+	    *) machine="$UNAME_MACHINE_ARCH"-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently (or will in the future) and ABI.
+	case "$UNAME_MACHINE_ARCH" in
+	    earm*)
+		os=netbsdelf
+		;;
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# Determine ABI tags.
+	case "$UNAME_MACHINE_ARCH" in
+	    earm*)
+		expr='s/^earmv[0-9]/-eabi/;s/eb$//'
+		abi=$(echo "$UNAME_MACHINE_ARCH" | sed -e "$expr")
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "$UNAME_VERSION" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=$(echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. -f1,2)
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "$machine-${os}${release}${abi-}"
+	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/Bitrig.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE"
+	exit ;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/OpenBSD.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-openbsd"$UNAME_RELEASE"
+	exit ;;
+    *:LibertyBSD:*:*)
+	UNAME_MACHINE_ARCH=$(arch | sed 's/^.*BSD\.//')
+	echo "$UNAME_MACHINE_ARCH"-unknown-libertybsd"$UNAME_RELEASE"
+	exit ;;
+    *:MidnightBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-midnightbsd"$UNAME_RELEASE"
+	exit ;;
+    *:ekkoBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-ekkobsd"$UNAME_RELEASE"
+	exit ;;
+    *:SolidBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-solidbsd"$UNAME_RELEASE"
+	exit ;;
+    *:OS108:*:*)
+	echo "$UNAME_MACHINE"-unknown-os108_"$UNAME_RELEASE"
+	exit ;;
+    macppc:MirBSD:*:*)
+	echo powerpc-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
+    *:MirBSD:*:*)
+	echo "$UNAME_MACHINE"-unknown-mirbsd"$UNAME_RELEASE"
+	exit ;;
+    *:Sortix:*:*)
+	echo "$UNAME_MACHINE"-unknown-sortix
+	exit ;;
+    *:Twizzler:*:*)
+	echo "$UNAME_MACHINE"-unknown-twizzler
+	exit ;;
+    *:Redox:*:*)
+	echo "$UNAME_MACHINE"-unknown-redox
+	exit ;;
+    mips:OSF1:*.*)
+	echo mips-dec-osf1
+	exit ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $3}')
+		;;
+	*5.*)
+		UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $4}')
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=$(/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1)
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE=alpha ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE=alpha ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE=alphaev5 ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE=alphaev56 ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE=alphapca56 ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE=alphapca57 ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE=alphaev6 ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE=alphaev67 ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE=alphaev68 ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE=alphaev69 ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE=alphaev7 ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE=alphaev79 ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo "$UNAME_MACHINE"-dec-osf"$(echo "$UNAME_RELEASE" | sed -e 's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz)"
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit ;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo "$UNAME_MACHINE"-unknown-amigaos
+	exit ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo "$UNAME_MACHINE"-unknown-morphos
+	exit ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit ;;
+    *:z/VM:*:*)
+	echo s390-ibm-zvmoe
+	exit ;;
+    *:OS400:*:*)
+	echo powerpc-ibm-os400
+	exit ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix"$UNAME_RELEASE"
+	exit ;;
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
+	echo arm-unknown-riscos
+	exit ;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "$( (/bin/universe) 2>/dev/null)" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit ;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case $(/usr/bin/uname -p) in
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
+    s390x:SunOS:*:*)
+	echo "$UNAME_MACHINE"-ibm-solaris2"$(echo "$UNAME_RELEASE" | sed -e 's/[^.]*//')"
+	exit ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2"$(echo "$UNAME_RELEASE" | sed -e 's/[^.]*//')"
+	exit ;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	echo i386-pc-auroraux"$UNAME_RELEASE"
+	exit ;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	set_cc_for_build
+	SUN_ARCH=i386
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH=x86_64
+	    fi
+	fi
+	echo "$SUN_ARCH"-pc-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    sun4*:SunOS:*:*)
+	case "$(/usr/bin/arch -k)" in
+	    Series*|S4*)
+		UNAME_RELEASE=$(uname -v)
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/')"
+	exit ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos"$UNAME_RELEASE"
+	exit ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=$( (sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null)
+	test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
+	case "$(/bin/arch)" in
+	    sun3)
+		echo m68k-sun-sunos"$UNAME_RELEASE"
+		;;
+	    sun4)
+		echo sparc-sun-sunos"$UNAME_RELEASE"
+		;;
+	esac
+	exit ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos"$UNAME_RELEASE"
+	exit ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	echo m68k-atari-mint"$UNAME_RELEASE"
+	exit ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	echo m68k-milan-mint"$UNAME_RELEASE"
+	exit ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	echo m68k-hades-mint"$UNAME_RELEASE"
+	exit ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	echo m68k-unknown-mint"$UNAME_RELEASE"
+	exit ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten"$UNAME_RELEASE"
+	exit ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten"$UNAME_RELEASE"
+	exit ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix"$UNAME_RELEASE"
+	exit ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix"$UNAME_RELEASE"
+	exit ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+#ifdef __cplusplus
+#include <stdio.h>  /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
+	  dummyarg=$(echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p') &&
+	  SYSTEM_NAME=$("$dummy" "$dummyarg") &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	echo mips-mips-riscos"$UNAME_RELEASE"
+	exit ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit ;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=$(/usr/bin/uname -p)
+	if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = mc88110
+	then
+	    if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
+	       test "$TARGET_BINARY_INTERFACE"x = x
+	    then
+		echo m88k-dg-dgux"$UNAME_RELEASE"
+	    else
+		echo m88k-dg-dguxbcs"$UNAME_RELEASE"
+	    fi
+	else
+	    echo i586-dg-dgux"$UNAME_RELEASE"
+	fi
+	exit ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/g')"
+	exit ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'$(uname -s)'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit ;;
+    ia64:AIX:*:*)
+	if test -x /usr/bin/oslevel ; then
+		IBM_REV=$(/usr/bin/oslevel)
+	else
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
+	fi
+	echo "$UNAME_MACHINE"-ibm-aix"$IBM_REV"
+	exit ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		set_cc_for_build
+		sed 's/^		//' << EOF > "$dummy.c"
+		#include <sys/systemcfg.h>
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=$("$dummy")
+		then
+			echo "$SYSTEM_NAME"
+		else
+			echo rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit ;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=$(/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }')
+	if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if test -x /usr/bin/lslpp ; then
+		IBM_REV=$(/usr/bin/lslpp -Lqc bos.rte.libc |
+			   awk -F: '{ print $3 }' | sed s/[0-9]*$/0/)
+	else
+		IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
+	fi
+	echo "$IBM_ARCH"-ibm-aix"$IBM_REV"
+	exit ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit ;;
+    ibmrt:4.4BSD:*|romp-ibm:4.4BSD:*)
+	echo romp-ibm-bsd4.4
+	exit ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd"$UNAME_RELEASE"   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
+	case "$UNAME_MACHINE" in
+	    9000/31?)            HP_ARCH=m68000 ;;
+	    9000/[34]??)         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if test -x /usr/bin/getconf; then
+		    sc_cpu_version=$(/usr/bin/getconf SC_CPU_VERSION 2>/dev/null)
+		    sc_kernel_bits=$(/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null)
+		    case "$sc_cpu_version" in
+		      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case "$sc_kernel_bits" in
+			  32) HP_ARCH=hppa2.0n ;;
+			  64) HP_ARCH=hppa2.0w ;;
+			  '') HP_ARCH=hppa2.0 ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if test "$HP_ARCH" = ""; then
+		    set_cc_for_build
+		    sed 's/^		//' << EOF > "$dummy.c"
+
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null) && HP_ARCH=$("$dummy")
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if test "$HP_ARCH" = hppa2.0w
+	then
+	    set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH=hppa2.0w
+	    else
+		HP_ARCH=hppa64
+	    fi
+	fi
+	echo "$HP_ARCH"-hp-hpux"$HPUX_REV"
+	exit ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
+	echo ia64-hp-hpux"$HPUX_REV"
+	exit ;;
+    3050*:HI-UX:*:*)
+	set_cc_for_build
+	sed 's/^	//' << EOF > "$dummy.c"
+	#include <unistd.h>
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=$("$dummy") &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:*)
+	echo hppa1.1-hp-bsd
+	exit ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:*)
+	echo hppa1.1-hp-osf
+	exit ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit ;;
+    i*86:OSF1:*:*)
+	if test -x /usr/sbin/sysversion ; then
+	    echo "$UNAME_MACHINE"-unknown-osf1mk
+	else
+	    echo "$UNAME_MACHINE"-unknown-osf1
+	fi
+	exit ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+	exit ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+	exit ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+	exit ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+	exit ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo "$UNAME_MACHINE"-cray-unicos"$UNAME_RELEASE" \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=$(uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz)
+	FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+	FUJITSU_REL=$(echo "$UNAME_RELEASE" | sed -e 's/ /_/')
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+	FUJITSU_REL=$(echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/')
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo "$UNAME_MACHINE"-pc-bsdi"$UNAME_RELEASE"
+	exit ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
+    *:BSD/OS:*:*)
+	echo "$UNAME_MACHINE"-unknown-bsdi"$UNAME_RELEASE"
+	exit ;;
+    arm:FreeBSD:*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	set_cc_for_build
+	if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_PCS_VFP
+	then
+	    echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo ${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabi
+	else
+	    echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo ${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabihf
+	fi
+	exit ;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=$(/usr/bin/uname -p)
+	case "$UNAME_PROCESSOR" in
+	    amd64)
+		UNAME_PROCESSOR=x86_64 ;;
+	    i386)
+		UNAME_PROCESSOR=i586 ;;
+	esac
+	echo "$UNAME_PROCESSOR"-unknown-freebsd"$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')"
+	exit ;;
+    i*:CYGWIN*:*)
+	echo "$UNAME_MACHINE"-pc-cygwin
+	exit ;;
+    *:MINGW64*:*)
+	echo "$UNAME_MACHINE"-pc-mingw64
+	exit ;;
+    *:MINGW*:*)
+	echo "$UNAME_MACHINE"-pc-mingw32
+	exit ;;
+    *:MSYS*:*)
+	echo "$UNAME_MACHINE"-pc-msys
+	exit ;;
+    i*:PW*:*)
+	echo "$UNAME_MACHINE"-pc-pw32
+	exit ;;
+    *:Interix*:*)
+	case "$UNAME_MACHINE" in
+	    x86)
+		echo i586-pc-interix"$UNAME_RELEASE"
+		exit ;;
+	    authenticamd | genuineintel | EM64T)
+		echo x86_64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
+	    IA64)
+		echo ia64-unknown-interix"$UNAME_RELEASE"
+		exit ;;
+	esac ;;
+    i*:UWIN*:*)
+	echo "$UNAME_MACHINE"-pc-uwin
+	exit ;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	echo x86_64-pc-cygwin
+	exit ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
+	exit ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo "$(echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,')-unknown-$LIBC$(echo "$UNAME_RELEASE"|sed -e 's,/.*$,,')"
+	exit ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo "$UNAME_MACHINE-unknown-$(echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' | tr "[:upper:]" "[:lower:]")$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')-$LIBC"
+	exit ;;
+    *:Minix:*:*)
+	echo "$UNAME_MACHINE"-unknown-minix
+	exit ;;
+    aarch64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    alpha:Linux:*:*)
+	case $(sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 2>/dev/null) in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC=gnulibc1 ; fi
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    arm*:Linux:*:*)
+	set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabi
+	    else
+		echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"eabihf
+	    fi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    cris:Linux:*:*)
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
+    crisv32:Linux:*:*)
+	echo "$UNAME_MACHINE"-axis-linux-"$LIBC"
+	exit ;;
+    e2k:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    frv:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    hexagon:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    i*86:Linux:*:*)
+	echo "$UNAME_MACHINE"-pc-linux-"$LIBC"
+	exit ;;
+    ia64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    k1om:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    loongarch32:Linux:*:* | loongarch64:Linux:*:* | loongarchx32:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    m32r*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    m68*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	set_cc_for_build
+	IS_GLIBC=0
+	test x"${LIBC}" = xgnu && IS_GLIBC=1
+	sed 's/^	//' << EOF > "$dummy.c"
+	#undef CPU
+	#undef mips
+	#undef mipsel
+	#undef mips64
+	#undef mips64el
+	#if ${IS_GLIBC} && defined(_ABI64)
+	LIBCABI=gnuabi64
+	#else
+	#if ${IS_GLIBC} && defined(_ABIN32)
+	LIBCABI=gnuabin32
+	#else
+	LIBCABI=${LIBC}
+	#endif
+	#endif
+
+	#if ${IS_GLIBC} && defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa64r6
+	#else
+	#if ${IS_GLIBC} && !defined(__mips64) && defined(__mips_isa_rev) && __mips_isa_rev>=6
+	CPU=mipsisa32r6
+	#else
+	#if defined(__mips64)
+	CPU=mips64
+	#else
+	CPU=mips
+	#endif
+	#endif
+	#endif
+
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	MIPS_ENDIAN=el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	MIPS_ENDIAN=
+	#else
+	MIPS_ENDIAN=
+	#endif
+	#endif
+EOF
+	eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^CPU\|^MIPS_ENDIAN\|^LIBCABI')"
+	test "x$CPU" != x && { echo "$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
+	;;
+    mips64el:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    openrisc*:Linux:*:*)
+	echo or1k-unknown-linux-"$LIBC"
+	exit ;;
+    or32:Linux:*:* | or1k*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    padre:Linux:*:*)
+	echo sparc-unknown-linux-"$LIBC"
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-"$LIBC"
+	exit ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case $(grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2) in
+	  PA7*) echo hppa1.1-unknown-linux-"$LIBC" ;;
+	  PA8*) echo hppa2.0-unknown-linux-"$LIBC" ;;
+	  *)    echo hppa-unknown-linux-"$LIBC" ;;
+	esac
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-"$LIBC"
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-"$LIBC"
+	exit ;;
+    ppc64le:Linux:*:*)
+	echo powerpc64le-unknown-linux-"$LIBC"
+	exit ;;
+    ppcle:Linux:*:*)
+	echo powerpcle-unknown-linux-"$LIBC"
+	exit ;;
+    riscv32:Linux:*:* | riscv32be:Linux:*:* | riscv64:Linux:*:* | riscv64be:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo "$UNAME_MACHINE"-ibm-linux-"$LIBC"
+	exit ;;
+    sh64*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    sh*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    tile*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    vax:Linux:*:*)
+	echo "$UNAME_MACHINE"-dec-linux-"$LIBC"
+	exit ;;
+    x86_64:Linux:*:*)
+	set_cc_for_build
+	LIBCABI=$LIBC
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __ILP32__'; echo IS_X32; echo '#endif') | \
+		(CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_X32 >/dev/null
+	    then
+		LIBCABI="$LIBC"x32
+	    fi
+	fi
+	echo "$UNAME_MACHINE"-pc-linux-"$LIBCABI"
+	exit ;;
+    xtensa*:Linux:*:*)
+	echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
+	exit ;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	echo "$UNAME_MACHINE"-pc-sysv4.2uw"$UNAME_VERSION"
+	exit ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo "$UNAME_MACHINE"-pc-os2-emx
+	exit ;;
+    i*86:XTS-300:*:STOP)
+	echo "$UNAME_MACHINE"-unknown-stop
+	exit ;;
+    i*86:atheos:*:*)
+	echo "$UNAME_MACHINE"-unknown-atheos
+	exit ;;
+    i*86:syllable:*:*)
+	echo "$UNAME_MACHINE"-pc-syllable
+	exit ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	echo i386-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    i*86:*DOS:*:*)
+	echo "$UNAME_MACHINE"-pc-msdosdjgpp
+	exit ;;
+    i*86:*:4.*:*)
+	UNAME_REL=$(echo "$UNAME_RELEASE" | sed 's/\/MP$//')
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL"
+	else
+		echo "$UNAME_MACHINE"-pc-sysv"$UNAME_REL"
+	fi
+	exit ;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case $(/bin/uname -X | grep "^Machine") in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo "$UNAME_MACHINE-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}"
+	exit ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=$(sed -n 's/.*Version //p' </usr/options/cb.name)
+		echo "$UNAME_MACHINE"-pc-isc"$UNAME_REL"
+	elif /bin/uname -X 2>/dev/null >/dev/null ; then
+		UNAME_REL=$( (/bin/uname -X|grep Release|sed -e 's/.*= //'))
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo "$UNAME_MACHINE"-pc-sco"$UNAME_REL"
+	else
+		echo "$UNAME_MACHINE"-pc-sysv32
+	fi
+	exit ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configure will decide that
+	# this is a cross-build.
+	echo i586-pc-msdosdjgpp
+	exit ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv"$UNAME_RELEASE" # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv"$UNAME_RELEASE"  # Unknown i860-SVR4
+	fi
+	exit ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3"$OS_REL"; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	echo powerpc-unknown-lynxos"$UNAME_RELEASE"
+	exit ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv"$UNAME_RELEASE"
+	exit ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=$( (uname -p) 2>/dev/null)
+		echo "$UNAME_MACHINE"-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	echo i586-unisys-sysv4
+	exit ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes <hewes@openmarket.com>.
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit ;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo "$UNAME_MACHINE"-stratus-vos
+	exit ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux"$UNAME_RELEASE"
+	exit ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if test -d /usr/nec; then
+		echo mips-nec-sysv"$UNAME_RELEASE"
+	else
+		echo mips-unknown-sysv"$UNAME_RELEASE"
+	fi
+	exit ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit ;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	echo i586-pc-haiku
+	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-7:SUPER-UX:*:*)
+	echo sx7-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-8:SUPER-UX:*:*)
+	echo sx8-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-8R:SUPER-UX:*:*)
+	echo sx8r-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    SX-ACE:SUPER-UX:*:*)
+	echo sxace-nec-superux"$UNAME_RELEASE"
+	exit ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
+    *:Rhapsody:*:*)
+	echo "$UNAME_MACHINE"-apple-rhapsody"$UNAME_RELEASE"
+	exit ;;
+    arm64:Darwin:*:*)
+	echo aarch64-apple-darwin"$UNAME_RELEASE"
+	exit ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	case $UNAME_PROCESSOR in
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	if command -v xcode-select > /dev/null 2> /dev/null && \
+		! xcode-select --print-path > /dev/null 2> /dev/null ; then
+	    # Avoid executing cc if there is no toolchain installed as
+	    # cc will be a stub that puts up a graphical alert
+	    # prompting the user to install developer tools.
+	    CC_FOR_BUILD=no_compiler_found
+	else
+	    set_cc_for_build
+	fi
+	if test "$CC_FOR_BUILD" != no_compiler_found; then
+	    if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_64BIT_ARCH >/dev/null
+	    then
+		case $UNAME_PROCESSOR in
+		    i386) UNAME_PROCESSOR=x86_64 ;;
+		    powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		esac
+	    fi
+	    # On 10.4-10.6 one might compile for PowerPC via gcc -arch ppc
+	    if (echo '#ifdef __POWERPC__'; echo IS_PPC; echo '#endif') | \
+		   (CCOPTS="" $CC_FOR_BUILD -E - 2>/dev/null) | \
+		   grep IS_PPC >/dev/null
+	    then
+		UNAME_PROCESSOR=powerpc
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # uname -m returns i386 or x86_64
+	    UNAME_PROCESSOR=$UNAME_MACHINE
+	fi
+	echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"
+	exit ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=$(uname -p)
+	if test "$UNAME_PROCESSOR" = x86; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo "$UNAME_PROCESSOR"-"$UNAME_MACHINE"-nto-qnx"$UNAME_RELEASE"
+	exit ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit ;;
+    NEO-*:NONSTOP_KERNEL:*:*)
+	echo neo-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSE-*:NONSTOP_KERNEL:*:*)
+	echo nse-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSR-*:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSV-*:NONSTOP_KERNEL:*:*)
+	echo nsv-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    NSX-*:NONSTOP_KERNEL:*:*)
+	echo nsx-tandem-nsk"$UNAME_RELEASE"
+	exit ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit ;;
+    DS/*:UNIX_System_V:*:*)
+	echo "$UNAME_MACHINE"-"$UNAME_SYSTEM"-"$UNAME_RELEASE"
+	exit ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	# shellcheck disable=SC2154
+	if test "$cputype" = 386; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo "$UNAME_MACHINE"-unknown-plan9
+	exit ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit ;;
+    SEI:*:*:SEIUX)
+	echo mips-sei-seiux"$UNAME_RELEASE"
+	exit ;;
+    *:DragonFly:*:*)
+	echo "$UNAME_MACHINE"-unknown-dragonfly"$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')"
+	exit ;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=$( (uname -p) 2>/dev/null)
+	case "$UNAME_MACHINE" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	echo i386-pc-xenix
+	exit ;;
+    i*86:skyos:*:*)
+	echo "$UNAME_MACHINE"-pc-skyos"$(echo "$UNAME_RELEASE" | sed -e 's/ .*$//')"
+	exit ;;
+    i*86:rdos:*:*)
+	echo "$UNAME_MACHINE"-pc-rdos
+	exit ;;
+    *:AROS:*:*)
+	echo "$UNAME_MACHINE"-unknown-aros
+	exit ;;
+    x86_64:VMkernel:*:*)
+	echo "$UNAME_MACHINE"-unknown-esx
+	exit ;;
+    amd64:Isilon\ OneFS:*:*)
+	echo x86_64-unknown-onefs
+	exit ;;
+    *:Unleashed:*:*)
+	echo "$UNAME_MACHINE"-unknown-unleashed"$UNAME_RELEASE"
+	exit ;;
+esac
+
+# No uname command or uname output not recognized.
+set_cc_for_build
+cat > "$dummy.c" <<EOF
+#ifdef _SEQUENT_
+#include <sys/types.h>
+#include <sys/utsname.h>
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined (vax) || defined (__vax) || defined (__vax__) || defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#include <signal.h>
+#if defined(_SIZE_T_) || defined(SIGLOST)
+#include <sys/utsname.h>
+#endif
+#endif
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include <sys/param.h>
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+  "4"
+#else
+  ""
+#endif
+  ); exit (0);
+#endif
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=$( (hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null);
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+  struct utsname un;
+
+  uname(&un);
+  if (strncmp(un.version, "V2", 2) == 0) {
+    printf ("i386-sequent-ptx2\n"); exit (0);
+  }
+  if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+    printf ("i386-sequent-ptx1\n"); exit (0);
+  }
+  printf ("i386-sequent-ptx\n"); exit (0);
+#endif
+
+#if defined (vax)
+#if !defined (ultrix)
+#include <sys/param.h>
+#if defined (BSD)
+#if BSD == 43
+  printf ("vax-dec-bsd4.3\n"); exit (0);
+#else
+#if BSD == 199006
+  printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#endif
+#else
+  printf ("vax-dec-bsd\n"); exit (0);
+#endif
+#else
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname un;
+  uname (&un);
+  printf ("vax-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("vax-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+#if defined(ultrix) || defined(_ultrix) || defined(__ultrix) || defined(__ultrix__)
+#if defined(mips) || defined(__mips) || defined(__mips__) || defined(MIPS) || defined(__MIPS__)
+#if defined(_SIZE_T_) || defined(SIGLOST)
+  struct utsname *un;
+  uname (&un);
+  printf ("mips-dec-ultrix%s\n", un.release); exit (0);
+#else
+  printf ("mips-dec-ultrix\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=$($dummy) &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+test -d /usr/apollo && { echo "$ISP-apollo-$SYSTYPE"; exit; }
+
+echo "$0: unable to guess system type" >&2
+
+case "$UNAME_MACHINE:$UNAME_SYSTEM" in
+    mips:Linux | mips64:Linux)
+	# If we got here on MIPS GNU/Linux, output extra information.
+	cat >&2 <<EOF
+
+NOTE: MIPS GNU/Linux systems require a C compiler to fully recognize
+the system type. Please install a C compiler and try again.
+EOF
+	;;
+esac
+
+cat >&2 <<EOF
+
+This script (version $timestamp), has failed to recognize the
+operating system you are using. If your script is old, overwrite *all*
+copies of config.guess and config.sub with the latest versions from:
+
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.guess
+and
+  https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+EOF
+
+year=$(echo $timestamp | sed 's,-.*,,')
+# shellcheck disable=SC2003
+if test "$(expr "$(date +%Y)" - "$year")" -lt 3 ; then
+   cat >&2 <<EOF
+
+If $0 has already been updated, send the following data and any
+information you think might be pertinent to config-patches@gnu.org to
+provide the necessary information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = $( (uname -m) 2>/dev/null || echo unknown)
+uname -r = $( (uname -r) 2>/dev/null || echo unknown)
+uname -s = $( (uname -s) 2>/dev/null || echo unknown)
+uname -v = $( (uname -v) 2>/dev/null || echo unknown)
+
+/usr/bin/uname -p = $( (/usr/bin/uname -p) 2>/dev/null)
+/bin/uname -X     = $( (/bin/uname -X) 2>/dev/null)
+
+hostinfo               = $( (hostinfo) 2>/dev/null)
+/bin/universe          = $( (/bin/universe) 2>/dev/null)
+/usr/bin/arch -k       = $( (/usr/bin/arch -k) 2>/dev/null)
+/bin/arch              = $( (/bin/arch) 2>/dev/null)
+/usr/bin/oslevel       = $( (/usr/bin/oslevel) 2>/dev/null)
+/usr/convex/getsysinfo = $( (/usr/convex/getsysinfo) 2>/dev/null)
+
+UNAME_MACHINE = "$UNAME_MACHINE"
+UNAME_RELEASE = "$UNAME_RELEASE"
+UNAME_SYSTEM  = "$UNAME_SYSTEM"
+UNAME_VERSION = "$UNAME_VERSION"
+EOF
+fi
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config.h.in b/fluent-bit/lib/libbacktrace-8602fda/config.h.in
new file mode 100644
index 000000000..0b01ddbb0
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config.h.in
@@ -0,0 +1,172 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* ELF size: 32 or 64 */
+#undef BACKTRACE_ELF_SIZE
+
+/* XCOFF size: 32 or 64 */
+#undef BACKTRACE_XCOFF_SIZE
+
+/* Define to 1 if you have the __atomic functions */
+#undef HAVE_ATOMIC_FUNCTIONS
+
+/* Define to 1 if you have the `clock_gettime' function. */
+#undef HAVE_CLOCK_GETTIME
+
+/* Define to 1 if you have the declaration of `getpagesize', and to 0 if you
+   don't. */
+#undef HAVE_DECL_GETPAGESIZE
+
+/* Define to 1 if you have the declaration of `strnlen', and to 0 if you
+   don't. */
+#undef HAVE_DECL_STRNLEN
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define if dl_iterate_phdr is available. */
+#undef HAVE_DL_ITERATE_PHDR
+
+/* Define to 1 if you have the fcntl function */
+#undef HAVE_FCNTL
+
+/* Define if getexecname is available. */
+#undef HAVE_GETEXECNAME
+
+/* Define if _Unwind_GetIPInfo is available. */
+#undef HAVE_GETIPINFO
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have KERN_PROC and KERN_PROC_PATHNAME in <sys/sysctl.h>.
+   */
+#undef HAVE_KERN_PROC
+
+/* Define to 1 if you have KERN_PROCARGS and KERN_PROC_PATHNAME in
+   <sys/sysctl.h>. */
+#undef HAVE_KERN_PROC_ARGS
+
+/* Define if -llzma is available. */
+#undef HAVE_LIBLZMA
+
+/* Define to 1 if you have the <link.h> header file. */
+#undef HAVE_LINK_H
+
+/* Define if AIX loadquery is available. */
+#undef HAVE_LOADQUERY
+
+/* Define to 1 if you have the `lstat' function. */
+#undef HAVE_LSTAT
+
+/* Define to 1 if you have the <mach-o/dyld.h> header file. */
+#undef HAVE_MACH_O_DYLD_H
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `readlink' function. */
+#undef HAVE_READLINK
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the __sync functions */
+#undef HAVE_SYNC_FUNCTIONS
+
+/* Define to 1 if you have the <sys/ldr.h> header file. */
+#undef HAVE_SYS_LDR_H
+
+/* Define to 1 if you have the <sys/link.h> header file. */
+#undef HAVE_SYS_LINK_H
+
+/* Define to 1 if you have the <sys/mman.h> header file. */
+#undef HAVE_SYS_MMAN_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define if -lz is available. */
+#undef HAVE_ZLIB
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
+/* Enable large inode numbers on Mac OS X 10.5.  */
+#ifndef _DARWIN_USE_64_BIT_INODE
+# define _DARWIN_USE_64_BIT_INODE 1
+#endif
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config.sub b/fluent-bit/lib/libbacktrace-8602fda/config.sub
new file mode 100755
index 000000000..38f3d037a
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config.sub
@@ -0,0 +1,1885 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright 1992-2021 Free Software Foundation, Inc.
+
+# shellcheck disable=SC2006,SC2268 # see below for rationale
+
+timestamp='2021-10-27'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
+
+
+# Please send patches to <config-patches@gnu.org>.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# https://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+# The "shellcheck disable" line above the timestamp inhibits complaints
+# about features and limitations of the classic Bourne shell that were
+# superseded or lifted in POSIX.  However, this script identifies a wide
+# variety of pre-POSIX systems that do not have POSIX shells at all, and
+# even some reasonably current systems (Solaris 10 as case-in-point) still
+# have a pre-POSIX /bin/sh.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
+
+Canonicalize a configuration name.
+
+Options:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to <config-patches@gnu.org>."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright 1992-2021 Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo "$1"
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Split fields of configuration type
+# shellcheck disable=SC2162
+saved_IFS=$IFS
+IFS="-" read field1 field2 field3 field4 <<EOF
+$1
+EOF
+IFS=$saved_IFS
+
+# Separate into logical components for further validation
+case $1 in
+	*-*-*-*-*)
+		echo Invalid configuration \`"$1"\': more than four components >&2
+		exit 1
+		;;
+	*-*-*-*)
+		basic_machine=$field1-$field2
+		basic_os=$field3-$field4
+		;;
+	*-*-*)
+		# Ambiguous whether COMPANY is present, or skipped and KERNEL-OS is two
+		# parts
+		maybe_os=$field2-$field3
+		case $maybe_os in
+			nto-qnx* | linux-* | uclinux-uclibc* \
+			| uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* \
+			| netbsd*-eabi* | kopensolaris*-gnu* | cloudabi*-eabi* \
+			| storm-chaos* | os2-emx* | rtmk-nova*)
+				basic_machine=$field1
+				basic_os=$maybe_os
+				;;
+			android-linux)
+				basic_machine=$field1-unknown
+				basic_os=linux-android
+				;;
+			*)
+				basic_machine=$field1-$field2
+				basic_os=$field3
+				;;
+		esac
+		;;
+	*-*)
+		# A lone config we happen to match not fitting any pattern
+		case $field1-$field2 in
+			decstation-3100)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			*-*)
+				# Second component is usually, but not always the OS
+				case $field2 in
+					# Prevent following clause from handling this valid os
+					sun*os*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+					zephyr*)
+						basic_machine=$field1-unknown
+						basic_os=$field2
+						;;
+					# Manufacturers
+					dec* | mips* | sequent* | encore* | pc533* | sgi* | sony* \
+					| att* | 7300* | 3300* | delta* | motorola* | sun[234]* \
+					| unicom* | ibm* | next | hp | isi* | apollo | altos* \
+					| convergent* | ncr* | news | 32* | 3600* | 3100* \
+					| hitachi* | c[123]* | convex* | sun | crds | omron* | dg \
+					| ultra | tti* | harris | dolphin | highlevel | gould \
+					| cbm | ns | masscomp | apple | axis | knuth | cray \
+					| microblaze* | sim | cisco \
+					| oki | wec | wrs | winbond)
+						basic_machine=$field1-$field2
+						basic_os=
+						;;
+					*)
+						basic_machine=$field1
+						basic_os=$field2
+						;;
+				esac
+			;;
+		esac
+		;;
+	*)
+		# Convert single-component short-hands not valid as part of
+		# multi-component configurations.
+		case $field1 in
+			386bsd)
+				basic_machine=i386-pc
+				basic_os=bsd
+				;;
+			a29khif)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			adobe68k)
+				basic_machine=m68010-adobe
+				basic_os=scout
+				;;
+			alliant)
+				basic_machine=fx80-alliant
+				basic_os=
+				;;
+			altos | altos3068)
+				basic_machine=m68k-altos
+				basic_os=
+				;;
+			am29k)
+				basic_machine=a29k-none
+				basic_os=bsd
+				;;
+			amdahl)
+				basic_machine=580-amdahl
+				basic_os=sysv
+				;;
+			amiga)
+				basic_machine=m68k-unknown
+				basic_os=
+				;;
+			amigaos | amigados)
+				basic_machine=m68k-unknown
+				basic_os=amigaos
+				;;
+			amigaunix | amix)
+				basic_machine=m68k-unknown
+				basic_os=sysv4
+				;;
+			apollo68)
+				basic_machine=m68k-apollo
+				basic_os=sysv
+				;;
+			apollo68bsd)
+				basic_machine=m68k-apollo
+				basic_os=bsd
+				;;
+			aros)
+				basic_machine=i386-pc
+				basic_os=aros
+				;;
+			aux)
+				basic_machine=m68k-apple
+				basic_os=aux
+				;;
+			balance)
+				basic_machine=ns32k-sequent
+				basic_os=dynix
+				;;
+			blackfin)
+				basic_machine=bfin-unknown
+				basic_os=linux
+				;;
+			cegcc)
+				basic_machine=arm-unknown
+				basic_os=cegcc
+				;;
+			convex-c1)
+				basic_machine=c1-convex
+				basic_os=bsd
+				;;
+			convex-c2)
+				basic_machine=c2-convex
+				basic_os=bsd
+				;;
+			convex-c32)
+				basic_machine=c32-convex
+				basic_os=bsd
+				;;
+			convex-c34)
+				basic_machine=c34-convex
+				basic_os=bsd
+				;;
+			convex-c38)
+				basic_machine=c38-convex
+				basic_os=bsd
+				;;
+			cray)
+				basic_machine=j90-cray
+				basic_os=unicos
+				;;
+			crds | unos)
+				basic_machine=m68k-crds
+				basic_os=
+				;;
+			da30)
+				basic_machine=m68k-da30
+				basic_os=
+				;;
+			decstation | pmax | pmin | dec3100 | decstatn)
+				basic_machine=mips-dec
+				basic_os=
+				;;
+			delta88)
+				basic_machine=m88k-motorola
+				basic_os=sysv3
+				;;
+			dicos)
+				basic_machine=i686-pc
+				basic_os=dicos
+				;;
+			djgpp)
+				basic_machine=i586-pc
+				basic_os=msdosdjgpp
+				;;
+			ebmon29k)
+				basic_machine=a29k-amd
+				basic_os=ebmon
+				;;
+			es1800 | OSE68k | ose68k | ose | OSE)
+				basic_machine=m68k-ericsson
+				basic_os=ose
+				;;
+			gmicro)
+				basic_machine=tron-gmicro
+				basic_os=sysv
+				;;
+			go32)
+				basic_machine=i386-pc
+				basic_os=go32
+				;;
+			h8300hms)
+				basic_machine=h8300-hitachi
+				basic_os=hms
+				;;
+			h8300xray)
+				basic_machine=h8300-hitachi
+				basic_os=xray
+				;;
+			h8500hms)
+				basic_machine=h8500-hitachi
+				basic_os=hms
+				;;
+			harris)
+				basic_machine=m88k-harris
+				basic_os=sysv3
+				;;
+			hp300 | hp300hpux)
+				basic_machine=m68k-hp
+				basic_os=hpux
+				;;
+			hp300bsd)
+				basic_machine=m68k-hp
+				basic_os=bsd
+				;;
+			hppaosf)
+				basic_machine=hppa1.1-hp
+				basic_os=osf
+				;;
+			hppro)
+				basic_machine=hppa1.1-hp
+				basic_os=proelf
+				;;
+			i386mach)
+				basic_machine=i386-mach
+				basic_os=mach
+				;;
+			isi68 | isi)
+				basic_machine=m68k-isi
+				basic_os=sysv
+				;;
+			m68knommu)
+				basic_machine=m68k-unknown
+				basic_os=linux
+				;;
+			magnum | m3230)
+				basic_machine=mips-mips
+				basic_os=sysv
+				;;
+			merlin)
+				basic_machine=ns32k-utek
+				basic_os=sysv
+				;;
+			mingw64)
+				basic_machine=x86_64-pc
+				basic_os=mingw64
+				;;
+			mingw32)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			mingw32ce)
+				basic_machine=arm-unknown
+				basic_os=mingw32ce
+				;;
+			monitor)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			morphos)
+				basic_machine=powerpc-unknown
+				basic_os=morphos
+				;;
+			moxiebox)
+				basic_machine=moxie-unknown
+				basic_os=moxiebox
+				;;
+			msdos)
+				basic_machine=i386-pc
+				basic_os=msdos
+				;;
+			msys)
+				basic_machine=i686-pc
+				basic_os=msys
+				;;
+			mvs)
+				basic_machine=i370-ibm
+				basic_os=mvs
+				;;
+			nacl)
+				basic_machine=le32-unknown
+				basic_os=nacl
+				;;
+			ncr3000)
+				basic_machine=i486-ncr
+				basic_os=sysv4
+				;;
+			netbsd386)
+				basic_machine=i386-pc
+				basic_os=netbsd
+				;;
+			netwinder)
+				basic_machine=armv4l-rebel
+				basic_os=linux
+				;;
+			news | news700 | news800 | news900)
+				basic_machine=m68k-sony
+				basic_os=newsos
+				;;
+			news1000)
+				basic_machine=m68030-sony
+				basic_os=newsos
+				;;
+			necv70)
+				basic_machine=v70-nec
+				basic_os=sysv
+				;;
+			nh3000)
+				basic_machine=m68k-harris
+				basic_os=cxux
+				;;
+			nh[45]000)
+				basic_machine=m88k-harris
+				basic_os=cxux
+				;;
+			nindy960)
+				basic_machine=i960-intel
+				basic_os=nindy
+				;;
+			mon960)
+				basic_machine=i960-intel
+				basic_os=mon960
+				;;
+			nonstopux)
+				basic_machine=mips-compaq
+				basic_os=nonstopux
+				;;
+			os400)
+				basic_machine=powerpc-ibm
+				basic_os=os400
+				;;
+			OSE68000 | ose68000)
+				basic_machine=m68000-ericsson
+				basic_os=ose
+				;;
+			os68k)
+				basic_machine=m68k-none
+				basic_os=os68k
+				;;
+			paragon)
+				basic_machine=i860-intel
+				basic_os=osf
+				;;
+			parisc)
+				basic_machine=hppa-unknown
+				basic_os=linux
+				;;
+			psp)
+				basic_machine=mipsallegrexel-sony
+				basic_os=psp
+				;;
+			pw32)
+				basic_machine=i586-unknown
+				basic_os=pw32
+				;;
+			rdos | rdos64)
+				basic_machine=x86_64-pc
+				basic_os=rdos
+				;;
+			rdos32)
+				basic_machine=i386-pc
+				basic_os=rdos
+				;;
+			rom68k)
+				basic_machine=m68k-rom68k
+				basic_os=coff
+				;;
+			sa29200)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			sei)
+				basic_machine=mips-sei
+				basic_os=seiux
+				;;
+			sequent)
+				basic_machine=i386-sequent
+				basic_os=
+				;;
+			sps7)
+				basic_machine=m68k-bull
+				basic_os=sysv2
+				;;
+			st2000)
+				basic_machine=m68k-tandem
+				basic_os=
+				;;
+			stratus)
+				basic_machine=i860-stratus
+				basic_os=sysv4
+				;;
+			sun2)
+				basic_machine=m68000-sun
+				basic_os=
+				;;
+			sun2os3)
+				basic_machine=m68000-sun
+				basic_os=sunos3
+				;;
+			sun2os4)
+				basic_machine=m68000-sun
+				basic_os=sunos4
+				;;
+			sun3)
+				basic_machine=m68k-sun
+				basic_os=
+				;;
+			sun3os3)
+				basic_machine=m68k-sun
+				basic_os=sunos3
+				;;
+			sun3os4)
+				basic_machine=m68k-sun
+				basic_os=sunos4
+				;;
+			sun4)
+				basic_machine=sparc-sun
+				basic_os=
+				;;
+			sun4os3)
+				basic_machine=sparc-sun
+				basic_os=sunos3
+				;;
+			sun4os4)
+				basic_machine=sparc-sun
+				basic_os=sunos4
+				;;
+			sun4sol2)
+				basic_machine=sparc-sun
+				basic_os=solaris2
+				;;
+			sun386 | sun386i | roadrunner)
+				basic_machine=i386-sun
+				basic_os=
+				;;
+			sv1)
+				basic_machine=sv1-cray
+				basic_os=unicos
+				;;
+			symmetry)
+				basic_machine=i386-sequent
+				basic_os=dynix
+				;;
+			t3e)
+				basic_machine=alphaev5-cray
+				basic_os=unicos
+				;;
+			t90)
+				basic_machine=t90-cray
+				basic_os=unicos
+				;;
+			toad1)
+				basic_machine=pdp10-xkl
+				basic_os=tops20
+				;;
+			tpf)
+				basic_machine=s390x-ibm
+				basic_os=tpf
+				;;
+			udi29k)
+				basic_machine=a29k-amd
+				basic_os=udi
+				;;
+			ultra3)
+				basic_machine=a29k-nyu
+				basic_os=sym1
+				;;
+			v810 | necv810)
+				basic_machine=v810-nec
+				basic_os=none
+				;;
+			vaxv)
+				basic_machine=vax-dec
+				basic_os=sysv
+				;;
+			vms)
+				basic_machine=vax-dec
+				basic_os=vms
+				;;
+			vsta)
+				basic_machine=i386-pc
+				basic_os=vsta
+				;;
+			vxworks960)
+				basic_machine=i960-wrs
+				basic_os=vxworks
+				;;
+			vxworks68)
+				basic_machine=m68k-wrs
+				basic_os=vxworks
+				;;
+			vxworks29k)
+				basic_machine=a29k-wrs
+				basic_os=vxworks
+				;;
+			xbox)
+				basic_machine=i686-pc
+				basic_os=mingw32
+				;;
+			ymp)
+				basic_machine=ymp-cray
+				basic_os=unicos
+				;;
+			*)
+				basic_machine=$1
+				basic_os=
+				;;
+		esac
+		;;
+esac
+
+# Decode 1-component or ad-hoc basic machines
+case $basic_machine in
+	# Here we handle the default manufacturer of certain CPU types.  It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		cpu=hppa1.1
+		vendor=winbond
+		;;
+	op50n)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	op60c)
+		cpu=hppa1.1
+		vendor=oki
+		;;
+	ibm*)
+		cpu=i370
+		vendor=ibm
+		;;
+	orion105)
+		cpu=clipper
+		vendor=highlevel
+		;;
+	mac | mpw | mac-mpw)
+		cpu=m68k
+		vendor=apple
+		;;
+	pmac | pmac-mpw)
+		cpu=powerpc
+		vendor=apple
+		;;
+
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		cpu=m68000
+		vendor=att
+		;;
+	3b*)
+		cpu=we32k
+		vendor=att
+		;;
+	bluegene*)
+		cpu=powerpc
+		vendor=ibm
+		basic_os=cnk
+		;;
+	decsystem10* | dec10*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops10
+		;;
+	decsystem20* | dec20*)
+		cpu=pdp10
+		vendor=dec
+		basic_os=tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		cpu=m68k
+		vendor=motorola
+		;;
+	dpx2*)
+		cpu=m68k
+		vendor=bull
+		basic_os=sysv3
+		;;
+	encore | umax | mmax)
+		cpu=ns32k
+		vendor=encore
+		;;
+	elxsi)
+		cpu=elxsi
+		vendor=elxsi
+		basic_os=${basic_os:-bsd}
+		;;
+	fx2800)
+		cpu=i860
+		vendor=alliant
+		;;
+	genix)
+		cpu=ns32k
+		vendor=ns
+		;;
+	h3050r* | hiux*)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		cpu=m68000
+		vendor=hp
+		;;
+	hp9k3[2-9][0-9])
+		cpu=m68k
+		vendor=hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		cpu=hppa1.1
+		vendor=hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		cpu=hppa1.0
+		vendor=hp
+		;;
+	i*86v32)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv32
+		;;
+	i*86v4*)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv4
+		;;
+	i*86v)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=sysv
+		;;
+	i*86sol2)
+		cpu=`echo "$1" | sed -e 's/86.*/86/'`
+		vendor=pc
+		basic_os=solaris2
+		;;
+	j90 | j90-cray)
+		cpu=j90
+		vendor=cray
+		basic_os=${basic_os:-unicos}
+		;;
+	iris | iris4d)
+		cpu=mips
+		vendor=sgi
+		case $basic_os in
+		    irix*)
+			;;
+		    *)
+			basic_os=irix4
+			;;
+		esac
+		;;
+	miniframe)
+		cpu=m68000
+		vendor=convergent
+		;;
+	*mint | mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		cpu=m68k
+		vendor=atari
+		basic_os=mint
+		;;
+	news-3600 | risc-news)
+		cpu=mips
+		vendor=sony
+		basic_os=newsos
+		;;
+	next | m*-next)
+		cpu=m68k
+		vendor=next
+		case $basic_os in
+		    openstep*)
+		        ;;
+		    nextstep*)
+			;;
+		    ns2*)
+		      basic_os=nextstep2
+			;;
+		    *)
+		      basic_os=nextstep3
+			;;
+		esac
+		;;
+	np1)
+		cpu=np1
+		vendor=gould
+		;;
+	op50n-* | op60c-*)
+		cpu=hppa1.1
+		vendor=oki
+		basic_os=proelf
+		;;
+	pa-hitachi)
+		cpu=hppa1.1
+		vendor=hitachi
+		basic_os=hiuxwe2
+		;;
+	pbd)
+		cpu=sparc
+		vendor=tti
+		;;
+	pbb)
+		cpu=m68k
+		vendor=tti
+		;;
+	pc532)
+		cpu=ns32k
+		vendor=pc532
+		;;
+	pn)
+		cpu=pn
+		vendor=gould
+		;;
+	power)
+		cpu=power
+		vendor=ibm
+		;;
+	ps2)
+		cpu=i386
+		vendor=ibm
+		;;
+	rm[46]00)
+		cpu=mips
+		vendor=siemens
+		;;
+	rtpc | rtpc-*)
+		cpu=romp
+		vendor=ibm
+		;;
+	sde)
+		cpu=mipsisa32
+		vendor=sde
+		basic_os=${basic_os:-elf}
+		;;
+	simso-wrs)
+		cpu=sparclite
+		vendor=wrs
+		basic_os=vxworks
+		;;
+	tower | tower-32)
+		cpu=m68k
+		vendor=ncr
+		;;
+	vpp*|vx|vx-*)
+		cpu=f301
+		vendor=fujitsu
+		;;
+	w65)
+		cpu=w65
+		vendor=wdc
+		;;
+	w89k-*)
+		cpu=hppa1.1
+		vendor=winbond
+		basic_os=proelf
+		;;
+	none)
+		cpu=none
+		vendor=none
+		;;
+	leon|leon[3-9])
+		cpu=sparc
+		vendor=$basic_machine
+		;;
+	leon-*|leon[3-9]-*)
+		cpu=sparc
+		vendor=`echo "$basic_machine" | sed 's/-.*//'`
+		;;
+
+	*-*)
+		# shellcheck disable=SC2162
+		saved_IFS=$IFS
+		IFS="-" read cpu vendor <<EOF
+$basic_machine
+EOF
+		IFS=$saved_IFS
+		;;
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+		cpu=$basic_machine
+		vendor=pc
+		;;
+	# These rules are duplicated from below for sake of the special case above;
+	# i.e. things that normalized to x86 arches should also default to "pc"
+	pc98)
+		cpu=i386
+		vendor=pc
+		;;
+	x64 | amd64)
+		cpu=x86_64
+		vendor=pc
+		;;
+	# Recognize the basic CPU types without company name.
+	*)
+		cpu=$basic_machine
+		vendor=unknown
+		;;
+esac
+
+unset -v basic_machine
+
+# Decode basic machines in the full and proper CPU-Company form.
+case $cpu-$vendor in
+	# Here we handle the default manufacturer of certain CPU types in canonical form. It is in
+	# some cases the only manufacturer, in others, it is the most popular.
+	craynv-unknown)
+		vendor=cray
+		basic_os=${basic_os:-unicosmp}
+		;;
+	c90-unknown | c90-cray)
+		vendor=cray
+		basic_os=${Basic_os:-unicos}
+		;;
+	fx80-unknown)
+		vendor=alliant
+		;;
+	romp-unknown)
+		vendor=ibm
+		;;
+	mmix-unknown)
+		vendor=knuth
+		;;
+	microblaze-unknown | microblazeel-unknown)
+		vendor=xilinx
+		;;
+	rs6000-unknown)
+		vendor=ibm
+		;;
+	vax-unknown)
+		vendor=dec
+		;;
+	pdp11-unknown)
+		vendor=dec
+		;;
+	we32k-unknown)
+		vendor=att
+		;;
+	cydra-unknown)
+		vendor=cydrome
+		;;
+	i370-ibm*)
+		vendor=ibm
+		;;
+	orion-unknown)
+		vendor=highlevel
+		;;
+	xps-unknown | xps100-unknown)
+		cpu=xps100
+		vendor=honeywell
+		;;
+
+	# Here we normalize CPU types with a missing or matching vendor
+	dpx20-unknown | dpx20-bull)
+		cpu=rs6000
+		vendor=bull
+		basic_os=${basic_os:-bosx}
+		;;
+
+	# Here we normalize CPU types irrespective of the vendor
+	amd64-*)
+		cpu=x86_64
+		;;
+	blackfin-*)
+		cpu=bfin
+		basic_os=linux
+		;;
+	c54x-*)
+		cpu=tic54x
+		;;
+	c55x-*)
+		cpu=tic55x
+		;;
+	c6x-*)
+		cpu=tic6x
+		;;
+	e500v[12]-*)
+		cpu=powerpc
+		basic_os=${basic_os}"spe"
+		;;
+	mips3*-*)
+		cpu=mips64
+		;;
+	ms1-*)
+		cpu=mt
+		;;
+	m68knommu-*)
+		cpu=m68k
+		basic_os=linux
+		;;
+	m9s12z-* | m68hcs12z-* | hcs12z-* | s12z-*)
+		cpu=s12z
+		;;
+	openrisc-*)
+		cpu=or32
+		;;
+	parisc-*)
+		cpu=hppa
+		basic_os=linux
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		cpu=i586
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-* | athalon_*-*)
+		cpu=i686
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		cpu=i686
+		;;
+	pentium4-*)
+		cpu=i786
+		;;
+	pc98-*)
+		cpu=i386
+		;;
+	ppc-* | ppcbe-*)
+		cpu=powerpc
+		;;
+	ppcle-* | powerpclittle-*)
+		cpu=powerpcle
+		;;
+	ppc64-*)
+		cpu=powerpc64
+		;;
+	ppc64le-* | powerpc64little-*)
+		cpu=powerpc64le
+		;;
+	sb1-*)
+		cpu=mipsisa64sb1
+		;;
+	sb1el-*)
+		cpu=mipsisa64sb1el
+		;;
+	sh5e[lb]-*)
+		cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+		;;
+	spur-*)
+		cpu=spur
+		;;
+	strongarm-* | thumb-*)
+		cpu=arm
+		;;
+	tx39-*)
+		cpu=mipstx39
+		;;
+	tx39el-*)
+		cpu=mipstx39el
+		;;
+	x64-*)
+		cpu=x86_64
+		;;
+	xscale-* | xscalee[bl]-*)
+		cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+		;;
+	arm64-*)
+		cpu=aarch64
+		;;
+
+	# Recognize the canonical CPU Types that limit and/or modify the
+	# company names they are paired with.
+	cr16-*)
+		basic_os=${basic_os:-elf}
+		;;
+	crisv32-* | etraxfs*-*)
+		cpu=crisv32
+		vendor=axis
+		;;
+	cris-* | etrax*-*)
+		cpu=cris
+		vendor=axis
+		;;
+	crx-*)
+		basic_os=${basic_os:-elf}
+		;;
+	neo-tandem)
+		cpu=neo
+		vendor=tandem
+		;;
+	nse-tandem)
+		cpu=nse
+		vendor=tandem
+		;;
+	nsr-tandem)
+		cpu=nsr
+		vendor=tandem
+		;;
+	nsv-tandem)
+		cpu=nsv
+		vendor=tandem
+		;;
+	nsx-tandem)
+		cpu=nsx
+		vendor=tandem
+		;;
+	mipsallegrexel-sony)
+		cpu=mipsallegrexel
+		vendor=sony
+		;;
+	tile*-*)
+		basic_os=${basic_os:-linux-gnu}
+		;;
+
+	*)
+		# Recognize the canonical CPU types that are allowed with any
+		# company name.
+		case $cpu in
+			1750a | 580 \
+			| a29k \
+			| aarch64 | aarch64_be \
+			| abacus \
+			| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] \
+			| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] \
+			| alphapca5[67] | alpha64pca5[67] \
+			| am33_2.0 \
+			| amdgcn \
+			| arc | arceb | arc32 | arc64 \
+			| arm | arm[lb]e | arme[lb] | armv* \
+			| avr | avr32 \
+			| asmjs \
+			| ba \
+			| be32 | be64 \
+			| bfin | bpf | bs2000 \
+			| c[123]* | c30 | [cjt]90 | c4x \
+			| c8051 | clipper | craynv | csky | cydra \
+			| d10v | d30v | dlx | dsp16xx \
+			| e2k | elxsi | epiphany \
+			| f30[01] | f700 | fido | fr30 | frv | ft32 | fx80 \
+			| h8300 | h8500 \
+			| hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+			| hexagon \
+			| i370 | i*86 | i860 | i960 | ia16 | ia64 \
+			| ip2k | iq2000 \
+			| k1om \
+			| le32 | le64 \
+			| lm32 \
+			| loongarch32 | loongarch64 | loongarchx32 \
+			| m32c | m32r | m32rle \
+			| m5200 | m68000 | m680[012346]0 | m68360 | m683?2 | m68k \
+			| m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x \
+			| m88110 | m88k | maxq | mb | mcore | mep | metag \
+			| microblaze | microblazeel \
+			| mips | mipsbe | mipseb | mipsel | mipsle \
+			| mips16 \
+			| mips64 | mips64eb | mips64el \
+			| mips64octeon | mips64octeonel \
+			| mips64orion | mips64orionel \
+			| mips64r5900 | mips64r5900el \
+			| mips64vr | mips64vrel \
+			| mips64vr4100 | mips64vr4100el \
+			| mips64vr4300 | mips64vr4300el \
+			| mips64vr5000 | mips64vr5000el \
+			| mips64vr5900 | mips64vr5900el \
+			| mipsisa32 | mipsisa32el \
+			| mipsisa32r2 | mipsisa32r2el \
+			| mipsisa32r3 | mipsisa32r3el \
+			| mipsisa32r5 | mipsisa32r5el \
+			| mipsisa32r6 | mipsisa32r6el \
+			| mipsisa64 | mipsisa64el \
+			| mipsisa64r2 | mipsisa64r2el \
+			| mipsisa64r3 | mipsisa64r3el \
+			| mipsisa64r5 | mipsisa64r5el \
+			| mipsisa64r6 | mipsisa64r6el \
+			| mipsisa64sb1 | mipsisa64sb1el \
+			| mipsisa64sr71k | mipsisa64sr71kel \
+			| mipsr5900 | mipsr5900el \
+			| mipstx39 | mipstx39el \
+			| mmix \
+			| mn10200 | mn10300 \
+			| moxie \
+			| mt \
+			| msp430 \
+			| nds32 | nds32le | nds32be \
+			| nfp \
+			| nios | nios2 | nios2eb | nios2el \
+			| none | np1 | ns16k | ns32k | nvptx \
+			| open8 \
+			| or1k* \
+			| or32 \
+			| orion \
+			| picochip \
+			| pdp10 | pdp11 | pj | pjl | pn | power \
+			| powerpc | powerpc64 | powerpc64le | powerpcle | powerpcspe \
+			| pru \
+			| pyramid \
+			| riscv | riscv32 | riscv32be | riscv64 | riscv64be \
+			| rl78 | romp | rs6000 | rx \
+			| s390 | s390x \
+			| score \
+			| sh | shl \
+			| sh[1234] | sh[24]a | sh[24]ae[lb] | sh[23]e | she[lb] | sh[lb]e \
+			| sh[1234]e[lb] |  sh[12345][lb]e | sh[23]ele | sh64 | sh64le \
+			| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet \
+			| sparclite \
+			| sparcv8 | sparcv9 | sparcv9b | sparcv9v | sv1 | sx* \
+			| spu \
+			| tahoe \
+			| thumbv7* \
+			| tic30 | tic4x | tic54x | tic55x | tic6x | tic80 \
+			| tron \
+			| ubicom32 \
+			| v70 | v850 | v850e | v850e1 | v850es | v850e2 | v850e2v3 \
+			| vax \
+			| visium \
+			| w65 \
+			| wasm32 | wasm64 \
+			| we32k \
+			| x86 | x86_64 | xc16x | xgate | xps100 \
+			| xstormy16 | xtensa* \
+			| ymp \
+			| z8k | z80)
+				;;
+
+			*)
+				echo Invalid configuration \`"$1"\': machine \`"$cpu-$vendor"\' not recognized 1>&2
+				exit 1
+				;;
+		esac
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $vendor in
+	digital*)
+		vendor=dec
+		;;
+	commodore*)
+		vendor=cbm
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if test x$basic_os != x
+then
+
+# First recognize some ad-hoc cases, or perhaps split kernel-os, or else just
+# set os.
+case $basic_os in
+	gnu/linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|gnu/linux|gnu|'`
+		;;
+	os2-emx)
+		kernel=os2
+		os=`echo "$basic_os" | sed -e 's|os2-emx|emx|'`
+		;;
+	nto-qnx*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto-qnx|qnx|'`
+		;;
+	*-*)
+		# shellcheck disable=SC2162
+		saved_IFS=$IFS
+		IFS="-" read kernel os <<EOF
+$basic_os
+EOF
+		IFS=$saved_IFS
+		;;
+	# Default OS when just kernel was specified
+	nto*)
+		kernel=nto
+		os=`echo "$basic_os" | sed -e 's|nto|qnx|'`
+		;;
+	linux*)
+		kernel=linux
+		os=`echo "$basic_os" | sed -e 's|linux|gnu|'`
+		;;
+	*)
+		kernel=
+		os=$basic_os
+		;;
+esac
+
+# Now, normalize the OS (knowing we just have one component, it's not a kernel,
+# etc.)
+case $os in
+	# First match some system type aliases that might get confused
+	# with valid system types.
+	# solaris* is a basic system type, with this one exception.
+	auroraux)
+		os=auroraux
+		;;
+	bluegene*)
+		os=cnk
+		;;
+	solaris1 | solaris1.*)
+		os=`echo "$os" | sed -e 's|solaris1|sunos4|'`
+		;;
+	solaris)
+		os=solaris2
+		;;
+	unixware*)
+		os=sysv4.2uw
+		;;
+	# es1800 is here to avoid being matched by es* (a different OS)
+	es1800*)
+		os=ose
+		;;
+	# Some version numbers need modification
+	chorusos*)
+		os=chorusos
+		;;
+	isc)
+		os=isc2.2
+		;;
+	sco6)
+		os=sco5v6
+		;;
+	sco5)
+		os=sco3.2v5
+		;;
+	sco4)
+		os=sco3.2v4
+		;;
+	sco3.2.[4-9]*)
+		os=`echo "$os" | sed -e 's/sco3.2./sco3.2v/'`
+		;;
+	sco*v* | scout)
+		# Don't match below
+		;;
+	sco*)
+		os=sco3.2v2
+		;;
+	psos*)
+		os=psos
+		;;
+	qnx*)
+		os=qnx
+		;;
+	hiux*)
+		os=hiuxwe2
+		;;
+	lynx*178)
+		os=lynxos178
+		;;
+	lynx*5)
+		os=lynxos5
+		;;
+	lynxos*)
+		# don't get caught up in next wildcard
+		;;
+	lynx*)
+		os=lynxos
+		;;
+	mac[0-9]*)
+		os=`echo "$os" | sed -e 's|mac|macos|'`
+		;;
+	opened*)
+		os=openedition
+		;;
+	os400*)
+		os=os400
+		;;
+	sunos5*)
+		os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+		;;
+	sunos6*)
+		os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+		;;
+	wince*)
+		os=wince
+		;;
+	utek*)
+		os=bsd
+		;;
+	dynix*)
+		os=bsd
+		;;
+	acis*)
+		os=aos
+		;;
+	atheos*)
+		os=atheos
+		;;
+	syllable*)
+		os=syllable
+		;;
+	386bsd)
+		os=bsd
+		;;
+	ctix* | uts*)
+		os=sysv
+		;;
+	nova*)
+		os=rtmk-nova
+		;;
+	ns2)
+		os=nextstep2
+		;;
+	# Preserve the version number of sinix5.
+	sinix5.*)
+		os=`echo "$os" | sed -e 's|sinix|sysv|'`
+		;;
+	sinix*)
+		os=sysv4
+		;;
+	tpf*)
+		os=tpf
+		;;
+	triton*)
+		os=sysv3
+		;;
+	oss*)
+		os=sysv3
+		;;
+	svr4*)
+		os=sysv4
+		;;
+	svr3)
+		os=sysv3
+		;;
+	sysvr4)
+		os=sysv4
+		;;
+	ose*)
+		os=ose
+		;;
+	*mint | mint[0-9]* | *MiNT | MiNT[0-9]*)
+		os=mint
+		;;
+	dicos*)
+		os=dicos
+		;;
+	pikeos*)
+		# Until real need of OS specific support for
+		# particular features comes up, bare metal
+		# configurations are quite functional.
+		case $cpu in
+		    arm*)
+			os=eabi
+			;;
+		    *)
+			os=elf
+			;;
+		esac
+		;;
+	*)
+		# No normalization, but not necessarily accepted, that comes below.
+		;;
+esac
+
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+kernel=
+case $cpu-$vendor in
+	score-*)
+		os=elf
+		;;
+	spu-*)
+		os=elf
+		;;
+	*-acorn)
+		os=riscix1.2
+		;;
+	arm*-rebel)
+		kernel=linux
+		os=gnu
+		;;
+	arm*-semi)
+		os=aout
+		;;
+	c4x-* | tic4x-*)
+		os=coff
+		;;
+	c8051-*)
+		os=elf
+		;;
+	clipper-intergraph)
+		os=clix
+		;;
+	hexagon-*)
+		os=elf
+		;;
+	tic54x-*)
+		os=coff
+		;;
+	tic55x-*)
+		os=coff
+		;;
+	tic6x-*)
+		os=coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=tops20
+		;;
+	pdp11-*)
+		os=none
+		;;
+	*-dec | vax-*)
+		os=ultrix4.2
+		;;
+	m68*-apollo)
+		os=domain
+		;;
+	i386-sun)
+		os=sunos4.0.2
+		;;
+	m68000-sun)
+		os=sunos3
+		;;
+	m68*-cisco)
+		os=aout
+		;;
+	mep-*)
+		os=elf
+		;;
+	mips*-cisco)
+		os=elf
+		;;
+	mips*-*)
+		os=elf
+		;;
+	or32-*)
+		os=coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=sysv3
+		;;
+	sparc-* | *-sun)
+		os=sunos4.1.1
+		;;
+	pru-*)
+		os=elf
+		;;
+	*-be)
+		os=beos
+		;;
+	*-ibm)
+		os=aix
+		;;
+	*-knuth)
+		os=mmixware
+		;;
+	*-wec)
+		os=proelf
+		;;
+	*-winbond)
+		os=proelf
+		;;
+	*-oki)
+		os=proelf
+		;;
+	*-hp)
+		os=hpux
+		;;
+	*-hitachi)
+		os=hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=sysv
+		;;
+	*-cbm)
+		os=amigaos
+		;;
+	*-dg)
+		os=dgux
+		;;
+	*-dolphin)
+		os=sysv3
+		;;
+	m68k-ccur)
+		os=rtu
+		;;
+	m88k-omron*)
+		os=luna
+		;;
+	*-next)
+		os=nextstep
+		;;
+	*-sequent)
+		os=ptx
+		;;
+	*-crds)
+		os=unos
+		;;
+	*-ns)
+		os=genix
+		;;
+	i370-*)
+		os=mvs
+		;;
+	*-gould)
+		os=sysv
+		;;
+	*-highlevel)
+		os=bsd
+		;;
+	*-encore)
+		os=bsd
+		;;
+	*-sgi)
+		os=irix
+		;;
+	*-siemens)
+		os=sysv4
+		;;
+	*-masscomp)
+		os=rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=uxpv
+		;;
+	*-rom68k)
+		os=coff
+		;;
+	*-*bug)
+		os=coff
+		;;
+	*-apple)
+		os=macos
+		;;
+	*-atari*)
+		os=mint
+		;;
+	*-wrs)
+		os=vxworks
+		;;
+	*)
+		os=none
+		;;
+esac
+
+fi
+
+# Now, validate our (potentially fixed-up) OS.
+case $os in
+	# Sometimes we do "kernel-libc", so those need to count as OSes.
+	musl* | newlib* | relibc* | uclibc*)
+		;;
+	# Likewise for "kernel-abi"
+	eabi* | gnueabi*)
+		;;
+	# VxWorks passes extra cpu info in the 4th filed.
+	simlinux | simwindows | spe)
+		;;
+	# Now accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST end in a * to match a version number.
+	gnu* | android* | bsd* | mach* | minix* | genix* | ultrix* | irix* \
+	     | *vms* | esix* | aix* | cnk* | sunos | sunos[34]* \
+	     | hpux* | unos* | osf* | luna* | dgux* | auroraux* | solaris* \
+	     | sym* |  plan9* | psp* | sim* | xray* | os68k* | v88r* \
+	     | hiux* | abug | nacl* | netware* | windows* \
+	     | os9* | macos* | osx* | ios* \
+	     | mpw* | magic* | mmixware* | mon960* | lnews* \
+	     | amigaos* | amigados* | msdos* | newsos* | unicos* | aof* \
+	     | aos* | aros* | cloudabi* | sortix* | twizzler* \
+	     | nindy* | vxsim* | vxworks* | ebmon* | hms* | mvs* \
+	     | clix* | riscos* | uniplus* | iris* | isc* | rtu* | xenix* \
+	     | mirbsd* | netbsd* | dicos* | openedition* | ose* \
+	     | bitrig* | openbsd* | secbsd* | solidbsd* | libertybsd* | os108* \
+	     | ekkobsd* | freebsd* | riscix* | lynxos* | os400* \
+	     | bosx* | nextstep* | cxux* | aout* | elf* | oabi* \
+	     | ptx* | coff* | ecoff* | winnt* | domain* | vsta* \
+	     | udi* | lites* | ieee* | go32* | aux* | hcos* \
+	     | chorusrdb* | cegcc* | glidix* | serenity* \
+	     | cygwin* | msys* | pe* | moss* | proelf* | rtems* \
+	     | midipix* | mingw32* | mingw64* | mint* \
+	     | uxpv* | beos* | mpeix* | udk* | moxiebox* \
+	     | interix* | uwin* | mks* | rhapsody* | darwin* \
+	     | openstep* | oskit* | conix* | pw32* | nonstopux* \
+	     | storm-chaos* | tops10* | tenex* | tops20* | its* \
+	     | os2* | vos* | palmos* | uclinux* | nucleus* | morphos* \
+	     | scout* | superux* | sysv* | rtmk* | tpf* | windiss* \
+	     | powermax* | dnix* | nx6 | nx7 | sei* | dragonfly* \
+	     | skyos* | haiku* | rdos* | toppers* | drops* | es* \
+	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
+	     | fiwix* )
+		;;
+	# This one is extra strict with allowed versions
+	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		;;
+	none)
+		;;
+	*)
+		echo Invalid configuration \`"$1"\': OS \`"$os"\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# As a final step for OS-related things, validate the OS-kernel combination
+# (given a valid OS), if there is a kernel.
+case $kernel-$os in
+	linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* \
+		   | linux-musl* | linux-relibc* | linux-uclibc* )
+		;;
+	uclinux-uclibc* )
+		;;
+	-dietlibc* | -newlib* | -musl* | -relibc* | -uclibc* )
+		# These are just libc implementations, not actual OSes, and thus
+		# require a kernel.
+		echo "Invalid configuration \`$1': libc \`$os' needs explicit kernel." 1>&2
+		exit 1
+		;;
+	kfreebsd*-gnu* | kopensolaris*-gnu*)
+		;;
+	vxworks-simlinux | vxworks-simwindows | vxworks-spe)
+		;;
+	nto-qnx*)
+		;;
+	os2-emx)
+		;;
+	*-eabi* | *-gnueabi*)
+		;;
+	-*)
+		# Blank kernel with real OS is always fine.
+		;;
+	*-*)
+		echo "Invalid configuration \`$1': Kernel \`$kernel' not known to work with OS \`$os'." 1>&2
+		exit 1
+		;;
+esac
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+case $vendor in
+	unknown)
+		case $cpu-$os in
+			*-riscix*)
+				vendor=acorn
+				;;
+			*-sunos*)
+				vendor=sun
+				;;
+			*-cnk* | *-aix*)
+				vendor=ibm
+				;;
+			*-beos*)
+				vendor=be
+				;;
+			*-hpux*)
+				vendor=hp
+				;;
+			*-mpeix*)
+				vendor=hp
+				;;
+			*-hiux*)
+				vendor=hitachi
+				;;
+			*-unos*)
+				vendor=crds
+				;;
+			*-dgux*)
+				vendor=dg
+				;;
+			*-luna*)
+				vendor=omron
+				;;
+			*-genix*)
+				vendor=ns
+				;;
+			*-clix*)
+				vendor=intergraph
+				;;
+			*-mvs* | *-opened*)
+				vendor=ibm
+				;;
+			*-os400*)
+				vendor=ibm
+				;;
+			s390-* | s390x-*)
+				vendor=ibm
+				;;
+			*-ptx*)
+				vendor=sequent
+				;;
+			*-tpf*)
+				vendor=ibm
+				;;
+			*-vxsim* | *-vxworks* | *-windiss*)
+				vendor=wrs
+				;;
+			*-aux*)
+				vendor=apple
+				;;
+			*-hms*)
+				vendor=hitachi
+				;;
+			*-mpw* | *-macos*)
+				vendor=apple
+				;;
+			*-*mint | *-mint[0-9]* | *-*MiNT | *-MiNT[0-9]*)
+				vendor=atari
+				;;
+			*-vos*)
+				vendor=stratus
+				;;
+		esac
+		;;
+esac
+
+echo "$cpu-$vendor-${kernel:+$kernel-}$os"
+exit
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/enable.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/enable.m4
new file mode 100644
index 000000000..88b29b8aa
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/enable.m4
@@ -0,0 +1,38 @@
+dnl ----------------------------------------------------------------------
+dnl This whole bit snagged from libstdc++-v3.
+
+dnl
+dnl GCC_ENABLE
+dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
+dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
+dnl    (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
+dnl
+dnl See docs/html/17_intro/configury.html#enable for documentation.
+dnl
+AC_DEFUN([GCC_ENABLE],[dnl
+m4_define([_g_switch],[--enable-$1])dnl
+m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl
+ AC_ARG_ENABLE($1,_g_help,
+  m4_bmatch([$5],
+   [^permit ],
+     [[
+      case "$enableval" in
+       m4_bpatsubst([$5],[permit ])) ;;
+       *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
+          dnl Idea for future:  generate a URL pointing to
+          dnl "onlinedocs/configopts.html#whatever"
+      esac
+     ]],
+   [^$],
+     [[
+      case "$enableval" in
+       yes|no) ;;
+       *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
+      esac
+     ]],
+   [[$5]]),
+  [enable_]m4_bpatsubst([$1],-,_)[=][$2])
+m4_undefine([_g_switch])dnl
+m4_undefine([_g_help])dnl
+])
+
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/lead-dot.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/lead-dot.m4
new file mode 100644
index 000000000..123f541bb
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/lead-dot.m4
@@ -0,0 +1,31 @@
+#                                                          -*- Autoconf -*-
+# Copyright (C) 2003, 2009  Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# serial 1
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/libtool.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/libtool.m4
new file mode 100644
index 000000000..17f8e5f30
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/libtool.m4
@@ -0,0 +1,7436 @@
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+])
+
+# serial 56 LT_INIT
+
+
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_defun([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+       [m4_default([$3],
+		   [m4_fatal([Libtool version $1 or higher is required],
+		             63)])],
+       [$2])])
+
+
+# _LT_CHECK_BUILDDIR
+# ------------------
+# Complain if the absolute build directory name contains unusual characters
+m4_defun([_LT_CHECK_BUILDDIR],
+[case `pwd` in
+  *\ * | *\	*)
+    AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
+esac
+])
+
+
+# LT_INIT([OPTIONS])
+# ------------------
+AC_DEFUN([LT_INIT],
+[AC_PREREQ([2.58])dnl We use AC_INCLUDES_DEFAULT
+AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_BEFORE([$0], [LT_LANG])dnl
+AC_BEFORE([$0], [LT_OUTPUT])dnl
+AC_BEFORE([$0], [LTDL_INIT])dnl
+m4_require([_LT_CHECK_BUILDDIR])dnl
+
+dnl Autoconf doesn't catch unexpanded LT_ macros by default:
+m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl
+m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl
+dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4
+dnl unless we require an AC_DEFUNed macro:
+AC_REQUIRE([LTOPTIONS_VERSION])dnl
+AC_REQUIRE([LTSUGAR_VERSION])dnl
+AC_REQUIRE([LTVERSION_VERSION])dnl
+AC_REQUIRE([LTOBSOLETE_VERSION])dnl
+m4_require([_LT_PROG_LTMAIN])dnl
+
+_LT_SHELL_INIT([SHELL=${CONFIG_SHELL-/bin/sh}])
+
+dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+AC_SUBST(LIBTOOL)dnl
+
+_LT_SETUP
+
+# Only expand once:
+m4_define([LT_INIT])
+])# LT_INIT
+
+# Old names:
+AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT])
+AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PROG_LIBTOOL], [])
+dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
+
+
+# _LT_CC_BASENAME(CC)
+# -------------------
+# Calculate cc_basename.  Skip known compiler wrappers and cross-prefix.
+m4_defun([_LT_CC_BASENAME],
+[for cc_temp in $1""; do
+  case $cc_temp in
+    compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
+    distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+])
+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
+# sensibly after `m4_require([_LT_FILEUTILS_DEFAULTS])'.
+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+])# _LT_FILEUTILS_DEFAULTS
+
+
+# _LT_SETUP
+# ---------
+m4_defun([_LT_SETUP],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+AC_REQUIRE([_LT_PREPARE_SED_QUOTE_VARS])dnl
+AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl
+
+_LT_DECL([], [host_alias], [0], [The host system])dnl
+_LT_DECL([], [host], [0])dnl
+_LT_DECL([], [host_os], [0])dnl
+dnl
+_LT_DECL([], [build_alias], [0], [The build system])dnl
+_LT_DECL([], [build], [0])dnl
+_LT_DECL([], [build_os], [0])dnl
+dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+dnl
+AC_REQUIRE([AC_PROG_LN_S])dnl
+test -z "$LN_S" && LN_S="ln -s"
+_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
+dnl
+AC_REQUIRE([LT_CMD_MAX_LEN])dnl
+_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
+_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
+dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+
+_LT_CONFIG_LIBTOOL_INIT([
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+])
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    _LT_PATH_MAGIC
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
+
+
+# _LT_PREPARE_SED_QUOTE_VARS
+# --------------------------
+# Define a few sed substitution that help us do robust quoting.
+m4_defun([_LT_PREPARE_SED_QUOTE_VARS],
+[# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\([["`\\]]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+])
+
+# _LT_PROG_LTMAIN
+# ---------------
+# Note that this code is called both from `configure', and `config.status'
+# now that we use AC_CONFIG_COMMANDS to generate libtool.  Notably,
+# `config.status' has no value for ac_aux_dir unless we are using Automake,
+# so we pass a copy along to make sure it has a sensible value anyway.
+m4_defun([_LT_PROG_LTMAIN],
+[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl
+_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir'])
+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+## ------------------------------------- ##
+## Accumulate code for creating libtool. ##
+## ------------------------------------- ##
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
+# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL_INIT],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_INIT],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_INIT])
+
+
+# _LT_CONFIG_LIBTOOL([COMMANDS])
+# ------------------------------
+# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS])
+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
+# Add leading comment marks to the start of each line, and a trailing
+# full-stop to the whole comment if one is not present already.
+m4_define([_LT_FORMAT_COMMENT],
+[m4_ifval([$1], [
+m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])],
+              [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.])
+)])
+
+
+
+## ------------------------ ##
+## FIXME: Eliminate VARNAME ##
+## ------------------------ ##
+
+
+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
+# -------------------------------------------------------------------
+# CONFIGNAME is the name given to the value in the libtool script.
+# VARNAME is the (base) name used in the configure script.
+# VALUE may be 0, 1 or 2 for a computed quote escaped value based on
+# VARNAME.  Any other value will be used directly.
+m4_define([_LT_DECL],
+[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
+    [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
+	[m4_ifval([$1], [$1], [$2])])
+    lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+    m4_ifval([$4],
+	[lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
+    lt_dict_add_subkey([lt_decl_dict], [$2],
+	[tagged?], [m4_ifval([$5], [yes], [no])])])
+])
+
+
+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
+# --------------------------------------------------------
+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+  [0], [m4_fatal([$0: too few arguments: $#])],
+  [1], [m4_fatal([$0: too few arguments: $#: $1])],
+  [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
+  [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
+  [lt_dict_filter([lt_decl_dict], $@)])[]dnl
+])
+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
+# --------------------------------------------------
+m4_define([lt_decl_quote_varnames],
+[_lt_decl_filter([value], [1], $@)])
+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_dquote_varnames],
+[_lt_decl_filter([value], [2], $@)])
+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_varnames_tagged],
+[m4_assert([$# <= 2])dnl
+_$0(m4_quote(m4_default([$1], [[, ]])),
+    m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
+    m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+     m4_if([$2], [],
+	   m4_quote(lt_decl_varnames),
+	m4_quote(m4_shift($@))))[]dnl
+])
+m4_define([_lt_decl_all_varnames],
+[lt_join($@, lt_decl_varnames_tagged([$1],
+			lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
+])
+
+
+# _LT_CONFIG_STATUS_DECLARE([VARNAME])
+# ------------------------------------
+# Quote a variable value, and forward it to `config.status' so that its
+# declaration there will have the same value as in `configure'.  VARNAME
+# must have a single quote delimited value for this to work.
+m4_define([_LT_CONFIG_STATUS_DECLARE],
+[$1='`$ECHO "$][$1" | $SED "$delay_single_quote_subst"`'])
+
+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
+# we write them to config.status, we have to be sure to quote all
+# embedded single quotes properly.  In configure, this macro expands
+# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
+#
+#    <var>='`$ECHO "$<var>" | $SED "$delay_single_quote_subst"`'
+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
+    [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAGS
+# ----------------
+# Output comment and list of tags supported by the script
+m4_defun([_LT_LIBTOOL_TAGS],
+[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
+available_tags="_LT_TAGS"dnl
+])
+
+
+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
+# expand to a commented shell variable setting:
+#
+#    # Some comment about what VAR is for.
+#    visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+					   [description])))[]dnl
+m4_pushdef([_libtool_name],
+    m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+    [0], [_libtool_name=[$]$1],
+    [1], [_libtool_name=$lt_[]$1],
+    [2], [_libtool_name=$lt_[]$1],
+    [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script.  Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+    m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS.  Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'.  Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+	dnl If the libtool generation code has been placed in $CONFIG_LT,
+	dnl instead of duplicating it all over again into config.status,
+	dnl then we will have config.status run $CONFIG_LT later, so it
+	dnl needs to know what name is stored there:
+        [AC_CONFIG_COMMANDS([libtool],
+            [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+    dnl If the libtool generation code is destined for config.status,
+    dnl expand the accumulated commands and init code now:
+    [AC_CONFIG_COMMANDS([libtool],
+        [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$[]1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+# _LT_GENERATED_FILE_INIT(FILE, [COMMENT])
+# ------------------------------------
+# Generate a child script FILE with all initialization necessary to
+# reuse the environment learned by the parent script, and make the
+# file executable.  If COMMENT is supplied, it is inserted after the
+# `#!' sequence but before initialization text begins.  After this
+# macro, additional text can be appended to FILE to form the body of
+# the child script.  The macro ends with non-zero status if the
+# file could not be fully written (such as if the disk is full).
+m4_ifdef([AS_INIT_GENERATED],
+[m4_defun([_LT_GENERATED_FILE_INIT],[AS_INIT_GENERATED($@)])],
+[m4_defun([_LT_GENERATED_FILE_INIT],
+[m4_require([AS_PREPARE])]dnl
+[m4_pushdef([AS_MESSAGE_LOG_FD])]dnl
+[lt_write_fail=0
+cat >$1 <<_ASEOF || lt_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+$2
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$1 <<\_ASEOF || lt_write_fail=1
+AS_SHELL_SANITIZE
+_AS_PREPARE
+exec AS_MESSAGE_FD>&1
+_ASEOF
+test $lt_write_fail = 0 && chmod +x $1[]dnl
+m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+_LT_GENERATED_FILE_INIT(["$CONFIG_LT"],
+[# Run this file to recreate a libtool stub with the current configuration.])
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+lt_cl_silent=false
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+  echo
+  AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+  -h, --help      print this help, then exit
+  -V, --version   print version number, then exit
+  -q, --quiet     do not print progress messages
+  -d, --debug     don't remove temporary files
+
+Report bugs to <bug-libtool@gnu.org>."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+  case $[1] in
+    --version | --v* | -V )
+      echo "$lt_cl_version"; exit 0 ;;
+    --help | --h* | -h )
+      echo "$lt_cl_help"; exit 0 ;;
+    --debug | --d* | -d )
+      debug=: ;;
+    --quiet | --q* | --silent | --s* | -q )
+      lt_cl_silent=: ;;
+
+    -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+    *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+  esac
+  shift
+done
+
+if $lt_cl_silent; then
+  exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure.  Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+lt_cl_success=:
+test "$silent" = yes &&
+  lt_config_lt_args="$lt_config_lt_args --quiet"
+exec AS_MESSAGE_LOG_FD>/dev/null
+$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+exec AS_MESSAGE_LOG_FD>>config.log
+$lt_cl_success || AS_EXIT(1)
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars.  Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+  m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+  m4_if(_LT_TAG, [C], [
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+  _LT_PROG_LTMAIN
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  _LT_PROG_XSI_SHELLFNS
+
+  sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+#    autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+  [C],			[_LT_LANG(C)],
+  [C++],		[_LT_LANG(CXX)],
+  [Java],		[_LT_LANG(GCJ)],
+  [Fortran 77],		[_LT_LANG(F77)],
+  [Fortran],		[_LT_LANG(FC)],
+  [Windows Resource],	[_LT_LANG(RC)],
+  [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+    [_LT_LANG($1)],
+    [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+  [LT_SUPPORTED_TAG([$1])dnl
+  m4_append([_LT_TAGS], [$1 ])dnl
+  m4_define([_LT_LANG_]$1[_enabled], [])dnl
+  _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+  [LT_LANG(CXX)],
+  [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+  [LT_LANG(F77)],
+  [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+  [LT_LANG(FC)],
+  [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+  [LT_LANG(GCJ)],
+  [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+    [LT_LANG(GCJ)],
+    [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+      [LT_LANG(GCJ)],
+      [m4_ifdef([AC_PROG_GCJ],
+	[m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([A][M_PROG_GCJ],
+	[m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([LT_PROG_GCJ],
+	[m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+  [LT_LANG(RC)],
+  [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+AU_DEFUN([AC_LIBTOOL_RC], [LT_LANG(Windows Resource)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+dnl AC_DEFUN([AC_LIBTOOL_RC], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+  case $host_os in
+    rhapsody* | darwin*)
+    AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+    AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+    AC_CHECK_TOOL([LIPO], [lipo], [:])
+    AC_CHECK_TOOL([OTOOL], [otool], [:])
+    AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+    _LT_DECL([], [DSYMUTIL], [1],
+      [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+    _LT_DECL([], [NMEDIT], [1],
+      [Tool to change global to local symbols on Mac OS X])
+    _LT_DECL([], [LIPO], [1],
+      [Tool to manipulate fat objects and archives on Mac OS X])
+    _LT_DECL([], [OTOOL], [1],
+      [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+    _LT_DECL([], [OTOOL64], [1],
+      [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+    AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+      [lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&AS_MESSAGE_LOG_FD
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi])
+    AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+      [lt_cv_ld_exported_symbols_list],
+      [lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+	[lt_cv_ld_exported_symbols_list=yes],
+	[lt_cv_ld_exported_symbols_list=no])
+	LDFLAGS="$save_LDFLAGS"
+    ])
+    AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load],
+      [lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
+      echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+      $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&AS_MESSAGE_LOG_FD
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+    ])
+    # Allow for Darwin 4-7 (macOS 10.0-10.3) although these are not expect to
+    # build without first building modern cctools / linker.
+    case $host_cpu-$host_os in
+    *-rhapsody* | *-darwin1.[[012]])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    *-darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    *-darwin*)
+      # darwin 5.x (macOS 10.1) onwards we only need to adjust when the
+      # deployment target is forced to an earlier version.
+      case ${MACOSX_DEPLOYMENT_TARGET-UNSET},$host in
+	UNSET,*-darwin[[89]]*|UNSET,*-darwin[[12]][[0123456789]]*)
+	  ;;
+	10.[[012]][[,.]]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress'
+	  ;;
+	*)
+	  ;;
+     esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES
+# --------------------------
+# Checks for linker and compiler features on Darwin / macOS / iOS
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+  m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_automatic, $1)=yes
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    _LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+  else
+    _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+  fi
+  _LT_TAGVAR(link_all_deplibs, $1)=yes
+  _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+    m4_if([$1], [CXX],
+[   if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+      _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+      _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+    fi
+],[])
+  else
+  _LT_TAGVAR(ld_shlibs, $1)=no
+  fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX
+# -----------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM])],[
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi],[])
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[m4_divert_text([M4SH-INIT], [$1
+])])# _LT_SHELL_INIT
+
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Find how we can fake an echo command that does not interpret backslash.
+# In particular, with Autoconf 2.60 or later we add some code to the start
+# of the generated configure script which will find a shell with a builtin
+# printf (which we can use as an echo command).
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+AC_MSG_CHECKING([how to print strings])
+# Test print first, because it will be a builtin if present.
+if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$[]1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO "$*" 
+}
+
+case "$ECHO" in
+  printf*) AC_MSG_RESULT([printf]) ;;
+  print*) AC_MSG_RESULT([print -r]) ;;
+  *) AC_MSG_RESULT([cat]) ;;
+esac
+
+m4_ifdef([_AS_DETECT_SUGGESTED],
+[_AS_DETECT_SUGGESTED([
+  test -n "${ZSH_VERSION+set}${BASH_VERSION+set}" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test "X`printf %s $ECHO`" = "X$ECHO" \
+      || test "X`print -r -- $ECHO`" = "X$ECHO" )])])
+
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1], [An echo program that protects backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+  [AS_HELP_STRING([--disable-libtool-lock],
+    [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    case `/usr/bin/file conftest.o` in
+	      *x86-64*)
+		LD="${LD-ld} -m elf32_x86_64"
+		;;
+	      *)
+		LD="${LD-ld} -m elf_i386"
+		;;
+	    esac
+	    ;;
+	  powerpc64le-*linux*)
+	    LD="${LD-ld} -m elf32lppclinux"
+	    ;;
+	  powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  powerpcle-*linux*)
+	    LD="${LD-ld} -m elf64lppc"
+	    ;;
+	  powerpc-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+    [AC_LANG_PUSH(C)
+     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+     AC_LANG_POP])
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+sparc*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*) LD="${LD-ld} -m elf64_sparc" ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[AC_CHECK_TOOL(AR, ar, false)
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1])
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+    [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+    [Commands used to build an old-style archive])
+_LT_DECL([], [lock_old_archive_extraction], [0],
+    [Whether to use a lock for old archive extraction])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#		[OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$3"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       $2=yes
+     fi
+   fi
+   $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$5], , :, [$5])
+else
+    m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#                  [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $3"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&AS_MESSAGE_LOG_FD
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         $2=yes
+       fi
+     else
+       $2=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$4], , :, [$4])
+else
+    m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+  i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[	 ]]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+  AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+  AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+    [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+#                      ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+  [$4]
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}]
+_LT_EOF
+  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) $1 ;;
+      x$lt_dlneed_uscore) $2 ;;
+      x$lt_dlunknown|x*) $3 ;;
+    esac
+  else :
+    # compilation failed
+    $3
+  fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ])
+    ;;
+
+  *)
+    AC_CHECK_FUNC([shl_load],
+	  [lt_cv_dlopen="shl_load"],
+      [AC_CHECK_LIB([dld], [shl_load],
+	    [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+	[AC_CHECK_FUNC([dlopen],
+	      [lt_cv_dlopen="dlopen"],
+	  [AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+	    [AC_CHECK_LIB([svld], [dlopen],
+		  [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+	      [AC_CHECK_LIB([dld], [dld_link],
+		    [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+	      ])
+	    ])
+	  ])
+	])
+      ])
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    AC_CACHE_CHECK([whether a program can dlopen itself],
+	  lt_cv_dlopen_self, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+	    lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+    ])
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+	  lt_cv_dlopen_self_static, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+	    lt_cv_dlopen_self_static=no,  lt_cv_dlopen_self_static=cross)
+      ])
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+	 [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+	 [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+	 [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+     fi
+   fi
+   chmod u+w . 2>&AS_MESSAGE_LOG_FD
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+	[Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  AC_MSG_CHECKING([if we can lock with hard links])
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  AC_MSG_RESULT([$hard_links])
+  if test "$hard_links" = no; then
+    AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+         [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+  [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+   test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+   test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+     test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+    # Linking always hardcodes the temporary library directory.
+    _LT_TAGVAR(hardcode_action, $1)=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    _LT_TAGVAR(hardcode_action, $1)=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+   test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+    [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      AC_MSG_RESULT([yes])
+    else
+      AC_MSG_RESULT([no])
+    fi
+    ;;
+  *)
+    AC_MSG_RESULT([no])
+    ;;
+  esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+	[], [
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([[A-Za-z]]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+  if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([[A-Za-z]]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[[4-9]]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[[01]] | aix4.[[01]].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+      # instead of lib<name>.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[[45]]*)
+  version_type=linux
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$host_os in
+  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+m4_if([$1], [],[
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    ;;
+
+  *)
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    ;;
+  esac
+  dynamic_linker='Win32 ld.exe'
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[[23]].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+  freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+haiku*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/beos/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[[3-9]]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be Linux ELF.
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu* | uclinuxfdpiceabi)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath],
+    [lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+	 LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+      [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+	 [lt_cv_shlibpath_overrides_runpath=yes])])
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+    ])
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[[89]] | openbsd2.[[89]].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+    [Variables whose values should be saved in libtool wrapper scripts and
+    restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+    [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0],  [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+    [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+    [[List of archive names.  First name is the real one, the rest are links.
+    The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+    [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [install_override_mode], [1],
+    [Permission mode override for installation of shared libraries])
+_LT_DECL([], [postinstall_cmds], [2],
+    [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+    [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+    [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+    [[As "finish_cmds", except a single script fragment to be evaled but
+    not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+    [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+    [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+    [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] |  ?:[\\/]*])
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word.  This closes a longstanding sh security hole.
+  ac_dummy="m4_if([$2], , $PATH, [$2])"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$1; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  AC_MSG_RESULT($MAGIC_CMD)
+else
+  AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+	 [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+  else
+    MAGIC_CMD=:
+  fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_PROG_ECHO_BACKSLASH])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+	[assume the C compiler uses GNU ld @<:@default=no@:>@])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break
+	;;
+      *)
+	test "$with_gnu_ld" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT($LD)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+_LT_PATH_LD_GNU
+AC_SUBST([LD])
+
+_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
+])# LT_PATH_LD
+
+# Old names:
+AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
+AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_LD], [])
+dnl AC_DEFUN([AC_PROG_LD], [])
+
+
+# _LT_PATH_LD_GNU
+#- --------------
+m4_defun([_LT_PATH_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  lt_cv_prog_gnu_ld=yes
+  ;;
+*)
+  lt_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# _LT_PATH_LD_GNU
+
+
+# _LT_CMD_RELOAD
+# --------------
+# find reload flag for linker
+#   -- PORTME Some linkers may need a different reload flag.
+m4_defun([_LT_CMD_RELOAD],
+[AC_CACHE_CHECK([for $LD option to reload object files],
+  lt_cv_ld_reload_flag,
+  [lt_cv_ld_reload_flag='-r'])
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+  darwin*)
+    if test "$GCC" = yes; then
+      reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+    else
+      reload_cmds='$LD$reload_flag -o $output$reload_objs'
+    fi
+    ;;
+esac
+_LT_TAGDECL([], [reload_flag], [1], [How to create reloadable object files])dnl
+_LT_TAGDECL([], [reload_cmds], [2])dnl
+])# _LT_CMD_RELOAD
+
+
+# _LT_CHECK_MAGIC_METHOD
+# ----------------------
+# how to check for library dependencies
+#  -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_MAGIC_METHOD],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+AC_CACHE_CHECK([how to recognize dependent libraries],
+lt_cv_deplibs_check_method,
+[lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[[4-9]]*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+beos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+bsdi[[45]]*)
+  lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
+  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_test_file=/shlib/libc.so
+  ;;
+
+cygwin*)
+  # func_win32_libid is a shell function defined in ltmain.sh
+  lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+  lt_cv_file_magic_cmd='func_win32_libid'
+  ;;
+
+mingw* | pw32*)
+  # Base MSYS/MinGW do not provide the 'file' command needed by
+  # func_win32_libid shell function, so use a weaker test based on 'objdump',
+  # unless we find 'file', for example because we are cross-compiling.
+  # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
+  if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]']
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]]\.[[0-9]]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[[3-9]]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+])
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+    [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+    [Command to use when deplibs_check_method == "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :)
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+  AC_SUBST([DUMPBIN])
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+  [lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: output\"" >&AS_MESSAGE_LOG_FD)
+  cat conftest.out >&AS_MESSAGE_LOG_FD
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
+  # These system don't have libm, or don't need it
+  ;;
+*-ncr-sysv4.3*)
+  AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+  AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+  ;;
+*)
+  AC_CHECK_LIB(m, cos, LIBM="-lm")
+  ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -Xcompiler -fno-builtin' ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' ;;
+  esac
+
+  _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+    lt_cv_prog_compiler_rtti_exceptions,
+    [-fno-rtti -fno-exceptions], [],
+    [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+	[Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[[BCDT]]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[[ABCDGISTW]]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[[ABCDEGRST]]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[[BCDEGRST]]'
+  ;;
+osf*)
+  symcode='[[BCDEGQRST]]'
+  ;;
+solaris*)
+  symcode='[[BDRT]]'
+  ;;
+sco3.2v5*)
+  symcode='[[DT]]'
+  ;;
+sysv4.2uw2*)
+  symcode='[[DT]]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[[ABDT]]'
+  ;;
+sysv4)
+  symcode='[[DFNSTU]]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK ['"\
+"     {last_section=section; section=\$ 3};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx]"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[	 ]]\($symcode$symcode*\)[[	 ]][[	 ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if AC_TRY_EVAL(ac_compile); then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+const struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_save_LIBS="$LIBS"
+	  lt_save_CFLAGS="$CFLAGS"
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+	  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS="$lt_save_LIBS"
+	  CFLAGS="$lt_save_CFLAGS"
+	else
+	  echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+    fi
+  else
+    echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  AC_MSG_RESULT(failed)
+else
+  AC_MSG_RESULT(ok)
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+    [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+    [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+    [lt_cv_sys_global_symbol_to_c_name_address], [1],
+    [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+    [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+    [Transform the output of nm in a C name address pair when lib prefix is needed])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+AC_MSG_CHECKING([for $compiler option to produce PIC])
+m4_if([$1], [CXX], [
+  # C++ specific cases for pic, static, wl, etc.
+  if test "$GXX" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+    aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+    mingw* | cygwin* | os2* | pw32* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+    *djgpp*)
+      # DJGPP does not support shared libraries at all
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+      ;;
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+    *qnx* | *nto*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+  else
+    case $host_os in
+      aix[[4-9]]*)
+	# All AIX code is PIC.
+	if test "$host_cpu" = ia64; then
+	  # AIX 5 now supports IA64 processor
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	else
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+	fi
+	;;
+      chorus*)
+	case $cc_basename in
+	cxch68*)
+	  # Green Hills C++ Compiler
+	  # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+	  ;;
+	esac
+	;;
+      dgux*)
+	case $cc_basename in
+	  ec++*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  ghcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      freebsd* | dragonfly*)
+	# FreeBSD uses GNU C++
+	;;
+      hpux9* | hpux10* | hpux11*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    if test "$host_cpu" != ia64; then
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	    fi
+	    ;;
+	  aCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    case $host_cpu in
+	    hppa*64*|ia64*)
+	      # +Z the default
+	      ;;
+	    *)
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	      ;;
+	    esac
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      interix*)
+	# This is c89, which is MS Visual C++ (no shared libs)
+	# Anyone wants to do a port?
+	;;
+      irix5* | irix6* | nonstopux*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    # CC pic flag -KPIC is the default.
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+	case $cc_basename in
+	  KCC*)
+	    # KAI C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    ;;
+	  ecpc* )
+	    # old Intel C++ for x86_64 which still supported -KPIC.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  icpc* )
+	    # Intel C++, used to be incompatible with GCC.
+	    # ICC 10 doesn't accept -KPIC any more.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  pgCC* | pgcpp*)
+	    # Portland Group C++ compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  cxx*)
+	    # Compaq C++
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*)
+	    # IBM XL 8.0, 9.0 on PPC and BlueGene
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+      lynxos*)
+	;;
+      m88k*)
+	;;
+      mvs*)
+	case $cc_basename in
+	  cxx*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      netbsd*)
+	;;
+      *qnx* | *nto*)
+        # QNX uses GNU C++, but need to define -shared option too, otherwise
+        # it will coredump.
+        _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+        ;;
+      osf3* | osf4* | osf5*)
+	case $cc_basename in
+	  KCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    ;;
+	  RCC*)
+	    # Rational C++ 2.4.1
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  cxx*)
+	    # Digital/Compaq C++
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      psos*)
+	;;
+      solaris*)
+	case $cc_basename in
+	  CC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	    ;;
+	  gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sunos4*)
+	case $cc_basename in
+	  CC*)
+	    # Sun C++ 4.x
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  lcc*)
+	    # Lucid
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	esac
+	;;
+      tandem*)
+	case $cc_basename in
+	  NCC*)
+	    # NonStop-UX NCC 3.20
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      vxworks*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+	;;
+    esac
+  fi
+],
+[
+  if test "$GCC" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker '
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Xcompiler -fPIC'
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      else
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC (with -KPIC) is the default.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+        ;;
+      ccc*)
+        _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+        # All Alpha code is PIC.
+        _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ F* | *Sun*Fortran*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # All OSF/1 code is PIC.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    rdos*)
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    unicos*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+    esac
+  fi
+])
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+    ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+    ;;
+esac
+AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+	[How to pass a linker flag through the compiler])
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+  _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+    [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+    [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+    [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+     "" | " "*) ;;
+     *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+     esac],
+    [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+     _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+	[Additional compiler flags for building library objects])
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+  _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+  $lt_tmp_static_flag,
+  [],
+  [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+	[Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  case $host_os in
+  aix[[4-9]]*)
+    # If we're using GNU nm, then we don't want the "-C" option.
+    # -C means demangle to AIX nm, but means don't demangle with GNU nm
+    # Also, AIX nm treats weak defined symbols like other global defined
+    # symbols, whereas GNU nm marks them as "W".
+    if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    else
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    fi
+    ;;
+  pw32*)
+    _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+  ;;
+  cygwin* | mingw* | cegcc*)
+    _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+  ;;
+  *)
+    _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  ;;
+  esac
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+], [
+  runpath_var=
+  _LT_TAGVAR(allow_undefined_flag, $1)=
+  _LT_TAGVAR(always_export_symbols, $1)=no
+  _LT_TAGVAR(archive_cmds, $1)=
+  _LT_TAGVAR(archive_expsym_cmds, $1)=
+  _LT_TAGVAR(compiler_needs_object, $1)=no
+  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+  _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  _LT_TAGVAR(hardcode_automatic, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+  _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+  _LT_TAGVAR(hardcode_minus_L, $1)=no
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  _LT_TAGVAR(inherit_rpath, $1)=no
+  _LT_TAGVAR(link_all_deplibs, $1)=unknown
+  _LT_TAGVAR(module_cmds, $1)=
+  _LT_TAGVAR(module_expsym_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+  _LT_TAGVAR(thread_safe_flag_spec, $1)=
+  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  _LT_TAGVAR(include_expsyms, $1)=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  esac
+
+  _LT_TAGVAR(ld_shlibs, $1)=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[[2-9]]*) ;;
+	  *\ \(GNU\ Binutils\)\ [[3-9]]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[[3-9]]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	# Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	_LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+      # as there is no search path for DLLs.
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=no
+      _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	_LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    haiku*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    interix[[3-9]]*)
+      _LT_TAGVAR(hardcode_direct, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=' $pic_flag'
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+	  tmp_sharedflag='--shared' ;;
+	xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	_LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+	  _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        _LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+    esac
+
+    if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+      runpath_var=
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	_LT_TAGVAR(hardcode_direct, $1)=unsupported
+      fi
+      ;;
+
+    aix[[4-9]]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      _LT_TAGVAR(archive_cmds, $1)=''
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[[012]]|aix4.[[012]].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	_LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        _LT_SYS_MODULE_PATH_AIX
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	  _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 _LT_SYS_MODULE_PATH_AIX
+	 _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	  _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	  fi
+	  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[[45]]*)
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      # Tell ltmain to make .lib files, not .a files.
+      libext=lib
+      # Tell ltmain to make .dll files, not .so files.
+      shrext_cmds=".dll"
+      # FIXME: Setting linknames here is a bad hack.
+      _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+      # The linker will automatically build a .lib file if we build a DLL.
+      _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+      # FIXME: Should let the user specify the lib program.
+      _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+      _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
+      _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      ;;
+
+    darwin* | rhapsody*)
+      _LT_DARWIN_LINKER_FEATURES($1)
+      ;;
+
+    dgux*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	_LT_TAGVAR(hardcode_minus_L, $1)=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	m4_if($1, [], [
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  _LT_LINKER_OPTION([if $CC understands -b],
+	    _LT_TAGVAR(lt_cv_prog_compiler__b, $1), [-b],
+	    [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'],
+	    [_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'])],
+	  [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'])
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  ;;
+	*)
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+        save_LDFLAGS="$LDFLAGS"
+        LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+        AC_LINK_IFELSE([AC_LANG_SOURCE([int foo(void) {}])],
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+        )
+        LDFLAGS="$save_LDFLAGS"
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(inherit_rpath, $1)=yes
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+	     _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	     ;;
+	   *)
+	     _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    os2*)
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      case $host_os in
+      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+        ;;
+	motorola)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4.3*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	_LT_TAGVAR(ld_shlibs, $1)=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      _LT_TAGVAR(ld_shlibs, $1)=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+    [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+  # Assume -lc should be added
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $_LT_TAGVAR(archive_cmds, $1) in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      AC_CACHE_CHECK([whether -lc should be explicitly linked in],
+	[lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1),
+	[$RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+	  pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+	  _LT_TAGVAR(allow_undefined_flag, $1)=
+	  if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+	  then
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	  else
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  fi
+	  _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+	])
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+    [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+    [enable_shared_with_static_runtimes], [0],
+    [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+    [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+    [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+    [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+    [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+    [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+    [Commands used to build a loadable module if different from building
+    a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+    [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+    [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+    [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+    [Flag to hardcode $libdir into a binary during linking.
+    This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
+    [[If ld is used when linking, flag to hardcode $libdir into a binary
+    during linking.  This must work even if $libdir does not exist]])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+    [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary and the resulting library dependency is
+    "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+    library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+    [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+    [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+    [Set to "yes" if building a shared library automatically hardcodes DIR
+    into the library and all subsequent libraries and executables linked
+    against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+    [Set to yes if linker adds runtime paths of dependent libraries
+    to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+    [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [fix_srcfile_path], [1],
+    [Fix the shell variable $srcfile for the compiler])
+_LT_TAGDECL([], [always_export_symbols], [0],
+    [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+    [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+    [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+    [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+    [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [file_list_spec], [1],
+    [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl    [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_SYS_DYNAMIC_LINKER($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+  LT_SYS_DLOPEN_SELF
+  _LT_CMD_STRIPLIB
+
+  # Report which library types will actually be built
+  AC_MSG_CHECKING([if libtool supports shared libraries])
+  AC_MSG_RESULT([$can_build_shared])
+
+  AC_MSG_CHECKING([whether to build shared libraries])
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[[4-9]]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  AC_MSG_RESULT([$enable_shared])
+
+  AC_MSG_CHECKING([whether to build static libraries])
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  AC_MSG_RESULT([$enable_static])
+
+  _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+    ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+    (test "X$CXX" != "Xg++"))) ; then
+  AC_PROG_CXXCPP
+else
+  _lt_caught_CXX_error=yes
+fi
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="int some_variable = 0;"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC=$CC
+  lt_save_LD=$LD
+  lt_save_GCC=$GCC
+  GCC=$GXX
+  lt_save_with_gnu_ld=$with_gnu_ld
+  lt_save_path_LD=$lt_cv_path_LD
+  if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+    lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+  else
+    $as_unset lt_cv_prog_gnu_ld
+  fi
+  if test -n "${lt_cv_path_LDCXX+set}"; then
+    lt_cv_path_LD=$lt_cv_path_LDCXX
+  else
+    $as_unset lt_cv_path_LD
+  fi
+  test -z "${LDCXX+set}" || LD=$LDCXX
+  CC=${CXX-"c++"}
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    # We don't want -fno-exception when compiling C++ code, so set the
+    # no_builtin_flag separately
+    if test "$GXX" = yes; then
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+    else
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+    fi
+
+    if test "$GXX" = yes; then
+      # Set up default GNU C++ configuration
+
+      LT_PATH_LD
+
+      # Check if GNU C++ uses GNU ld as the underlying linker, since the
+      # archiving commands below assume that GNU ld is being used.
+      if test "$with_gnu_ld" = yes; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+        # If archive_cmds runs LD, not CC, wlarc should be empty
+        # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+        #     investigate it a little bit more. (MM)
+        wlarc='${wl}'
+
+        # ancient GNU ld didn't support --whole-archive et. al.
+        if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+	  $GREP 'no-whole-archive' > /dev/null; then
+          _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+        else
+          _LT_TAGVAR(whole_archive_flag_spec, $1)=
+        fi
+      else
+        with_gnu_ld=no
+        wlarc=
+
+        # A generic and very simple default shared library creation
+        # command for GNU C++ for the case where it uses the native
+        # linker, instead of GNU ld.  If possible, this setting should
+        # overridden to take advantage of the native linker features on
+        # the platform it is being used on.
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+      fi
+
+      # Commands to make compiler produce verbose output that lists
+      # what "hidden" libraries, object files and flags are used when
+      # linking a shared library.
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+    else
+      GXX=no
+      with_gnu_ld=no
+      wlarc=
+    fi
+
+    # PORTME: fill in a description of your system's C++ link characteristics
+    AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+    _LT_TAGVAR(ld_shlibs, $1)=yes
+    case $host_os in
+      aix3*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+      aix[[4-9]]*)
+        if test "$host_cpu" = ia64; then
+          # On IA64, the linker does run time linking by default, so we don't
+          # have to do anything special.
+          aix_use_runtimelinking=no
+          exp_sym_flag='-Bexport'
+          no_entry_flag=""
+        else
+          aix_use_runtimelinking=no
+
+          # Test if we are trying to use run time linking or normal
+          # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+          # need to do runtime linking.
+          case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	    for ld_flag in $LDFLAGS; do
+	      case $ld_flag in
+	      *-brtl*)
+	        aix_use_runtimelinking=yes
+	        break
+	        ;;
+	      esac
+	    done
+	    ;;
+          esac
+
+          exp_sym_flag='-bexport'
+          no_entry_flag='-bnoentry'
+        fi
+
+        # When large executables or shared objects are built, AIX ld can
+        # have problems creating the table of contents.  If linking a library
+        # or program results in "error TOC overflow" add -mminimal-toc to
+        # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+        # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+        _LT_TAGVAR(archive_cmds, $1)=''
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+        if test "$GXX" = yes; then
+          case $host_os in aix4.[[012]]|aix4.[[012]].*)
+          # We only want to do this on AIX 4.2 and lower, the check
+          # below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	     strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	    # We have reworked collect2
+	    :
+	  else
+	    # We have old collect2
+	    _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	    # It fails to find uninstalled libraries when the uninstalled
+	    # path is not listed in the libpath.  Setting hardcode_minus_L
+	    # to unsupported forces relinking
+	    _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+          esac
+          shared_flag='-shared'
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag="$shared_flag "'${wl}-G'
+	  fi
+        else
+          # not using gcc
+          if test "$host_cpu" = ia64; then
+	  # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	  # chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+          else
+	    if test "$aix_use_runtimelinking" = yes; then
+	      shared_flag='${wl}-G'
+	    else
+	      shared_flag='${wl}-bM:SRE'
+	    fi
+          fi
+        fi
+
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+        # It seems that -bexpall does not export symbols beginning with
+        # underscore (_), so it is better to generate a list of symbols to
+	# export.
+        _LT_TAGVAR(always_export_symbols, $1)=yes
+        if test "$aix_use_runtimelinking" = yes; then
+          # Warning - without using the other runtime loading flags (-brtl),
+          # -berok will link without error, but may produce a broken library.
+          _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+          # Determine the default libpath from the value encoded in an empty
+          # executable.
+          _LT_SYS_MODULE_PATH_AIX
+          _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+        else
+          if test "$host_cpu" = ia64; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	    _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+          else
+	    # Determine the default libpath from the value encoded in an
+	    # empty executable.
+	    _LT_SYS_MODULE_PATH_AIX
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	    # Warning - without using the other run time loading flags,
+	    # -berok will link without error, but may produce a broken library.
+	    _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	    _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	    if test "$with_gnu_ld" = yes; then
+	      # We only use this code for GNU lds that support --whole-archive.
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    else
+	      # Exported symbols can be pulled into shared objects from archives
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	    fi
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	    # This is similar to how AIX traditionally builds its shared
+	    # libraries.
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+          fi
+        fi
+        ;;
+
+      beos*)
+	if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	  # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	  # support --undefined.  This deserves some investigation.  FIXME
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      chorus*)
+        case $cc_basename in
+          *)
+	  # FIXME: insert proper C++ library support
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	  ;;
+        esac
+        ;;
+
+      cygwin* | mingw* | pw32* | cegcc*)
+        # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+        # as there is no search path for DLLs.
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+        _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+        _LT_TAGVAR(always_export_symbols, $1)=no
+        _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+        if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+          # If the export-symbols file already is a .def file (1st line
+          # is EXPORTS), use it as is; otherwise, prepend...
+          _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	    cp $export_symbols $output_objdir/$soname.def;
+          else
+	    echo EXPORTS > $output_objdir/$soname.def;
+	    cat $export_symbols >> $output_objdir/$soname.def;
+          fi~
+          $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+        else
+          _LT_TAGVAR(ld_shlibs, $1)=no
+        fi
+        ;;
+      darwin* | rhapsody*)
+        _LT_DARWIN_LINKER_FEATURES($1)
+	;;
+
+      dgux*)
+        case $cc_basename in
+          ec++*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          ghcx*)
+	    # Green Hills C++ Compiler
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      freebsd2.*)
+        # C++ shared libraries reported to be fairly broken before
+	# switch to ELF
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      freebsd-elf*)
+        _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+        ;;
+
+      freebsd* | dragonfly*)
+        # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+        # conventions
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+        ;;
+
+      gnu*)
+        ;;
+
+      haiku*)
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        ;;
+
+      hpux9*)
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+				             # but as the default
+				             # location of the library.
+
+        case $cc_basename in
+          CC*)
+            # FIXME: insert proper C++ library support
+            _LT_TAGVAR(ld_shlibs, $1)=no
+            ;;
+          aCC*)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            # Commands to make compiler produce verbose output that lists
+            # what "hidden" libraries, object files and flags are used when
+            # linking a shared library.
+            #
+            # There doesn't appear to be a way to prevent this compiler from
+            # explicitly linking system object files so we need to strip them
+            # from the output so that they don't get included in the library
+            # dependencies.
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            ;;
+          *)
+            if test "$GXX" = yes; then
+              _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            else
+              # FIXME: insert proper C++ library support
+              _LT_TAGVAR(ld_shlibs, $1)=no
+            fi
+            ;;
+        esac
+        ;;
+
+      hpux10*|hpux11*)
+        if test $with_gnu_ld = no; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+          case $host_cpu in
+            hppa*64*|ia64*)
+              ;;
+            *)
+	      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+              ;;
+          esac
+        fi
+        case $host_cpu in
+          hppa*64*|ia64*)
+            _LT_TAGVAR(hardcode_direct, $1)=no
+            _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+            ;;
+          *)
+            _LT_TAGVAR(hardcode_direct, $1)=yes
+            _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+					         # but as the default
+					         # location of the library.
+            ;;
+        esac
+
+        case $cc_basename in
+          CC*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          aCC*)
+	    case $host_cpu in
+	      hppa*64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      ia64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      *)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	    esac
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test $with_gnu_ld = no; then
+	        case $host_cpu in
+	          hppa*64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          ia64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          *)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	        esac
+	      fi
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      interix[[3-9]]*)
+	_LT_TAGVAR(hardcode_direct, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+	# Instead, shared libraries are loaded at an image base (0x10000000 by
+	# default) and relocated if they conflict, which is a slow very memory
+	# consuming and fragmenting process.  To avoid this, we pick a random,
+	# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+	# time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	;;
+      irix5* | irix6*)
+        case $cc_basename in
+          CC*)
+	    # SGI C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test "$with_gnu_ld" = no; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	      else
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
+	      fi
+	    fi
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+	    ;;
+        esac
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(inherit_rpath, $1)=yes
+        ;;
+
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+	    ;;
+	  icpc* | ecpc* )
+	    # Intel C++
+	    with_gnu_ld=yes
+	    # version 8.0 and above of icpc choke on multiply defined symbols
+	    # if we add $predep_objects and $postdep_objects, however 7.1 and
+	    # earlier do not add the objects themselves.
+	    case `$CC -V 2>&1` in
+	      *"Version 7."*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	      *)  # Version 8.0 or newer
+	        tmp_idyn=
+	        case $host_cpu in
+		  ia64*) tmp_idyn=' -i_dynamic';;
+		esac
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	    esac
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    ;;
+          pgCC* | pgcpp*)
+            # Portland Group C++ compiler
+	    case `$CC -V` in
+	    *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*)
+	      _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+		compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"'
+	      _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+		$AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~
+		$RANLIB $oldlib'
+	      _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    *) # Version 6 and above use weak symbols
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+            ;;
+	  cxx*)
+	    # Compaq C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+	    runpath_var=LD_RUN_PATH
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "X$list" | $Xsed'
+	    ;;
+	  xl* | mpixl* | bgxl*)
+	    # IBM XL 8.0 on PPC, with GNU ld
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    if test "x$supports_anon_versioning" = xyes; then
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+		cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+		echo "local: *; };" >> $output_objdir/$libname.ver~
+		$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+	    fi
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	      _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+	      # Not sure whether something based on
+	      # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+	      # would be better.
+	      output_verbose_link_cmd='func_echo_all'
+
+	      # Archives containing C++ object files must be created using
+	      # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	      # necessary to make sure instantiated templates are included
+	      # in the archive.
+	      _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+
+      lynxos*)
+        # FIXME: insert proper C++ library support
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      m88k*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      mvs*)
+        case $cc_basename in
+          cxx*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	  *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	esac
+	;;
+
+      netbsd*)
+        if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable  -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+	  wlarc=
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	fi
+	# Workaround some broken pre-1.5 toolchains
+	output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+	;;
+
+      *nto* | *qnx*)
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+	;;
+
+      openbsd2*)
+        # C++ shared libraries are fairly broken
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      openbsd*)
+	if test -f /usr/libexec/ld.so; then
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+	  fi
+	  output_verbose_link_cmd=func_echo_all
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      osf3* | osf4* | osf5*)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Archives containing C++ object files must be created using
+	    # the KAI C++ compiler.
+	    case $host in
+	      osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+	      *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+	    esac
+	    ;;
+          RCC*)
+	    # Rational C++ 2.4.1
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          cxx*)
+	    case $host in
+	      osf3*)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && func_echo_all "${wl}-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+		;;
+	      *)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+	          echo "-hidden">> $lib.exp~
+	          $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp  `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~
+	          $RM $lib.exp'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+		;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+	  *)
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	      case $host in
+	        osf3*)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	        *)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	      esac
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	      # Commands to make compiler produce verbose output that lists
+	      # what "hidden" libraries, object files and flags are used when
+	      # linking a shared library.
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      psos*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      sunos4*)
+        case $cc_basename in
+          CC*)
+	    # Sun C++ 4.x
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          lcc*)
+	    # Lucid
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      solaris*)
+        case $cc_basename in
+          CC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+            _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+	    _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag}  -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	      $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	    _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	    case $host_os in
+	      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+	      *)
+		# The compiler driver will combine and reorder linker options,
+		# but understands `-z linker_flag'.
+	        # Supported since Solaris 2.6 (maybe 2.5.1?)
+		_LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	        ;;
+	    esac
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+	    output_verbose_link_cmd='func_echo_all'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	    ;;
+          gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+	    # The C++ compiler must be used to create the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    # GNU C++ compiler with Solaris linker
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+	      if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      else
+	        # g++ 2.7 appears to require `-G' NOT `-shared' on this
+	        # platform.
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      fi
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+	      case $host_os in
+		solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+		*)
+		  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+		  ;;
+	      esac
+	    fi
+	    ;;
+        esac
+        ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      case $cc_basename in
+        CC*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+      esac
+      ;;
+
+      sysv5* | sco3.2v5* | sco5v6*)
+	# Note: We can NOT use -z defs as we might desire, because we do not
+	# link with -lc, and that would cause any symbols used from libc to
+	# always be unresolved, which means just about no library would
+	# ever link correctly.  If we're not using GNU ld we use -z text
+	# though, which does catch some bad symbols but isn't as heavy-handed
+	# as -z defs.
+	_LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+	_LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+	_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+	_LT_TAGVAR(link_all_deplibs, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+	runpath_var='LD_RUN_PATH'
+
+	case $cc_basename in
+          CC*)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Tprelink_objects $oldobjs~
+	      '"$_LT_TAGVAR(old_archive_cmds, $1)"
+	    _LT_TAGVAR(reload_cmds, $1)='$CC -Tprelink_objects $reload_objs~
+	      '"$_LT_TAGVAR(reload_cmds, $1)"
+	    ;;
+	  *)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    ;;
+	esac
+      ;;
+
+      tandem*)
+        case $cc_basename in
+          NCC*)
+	    # NonStop-UX NCC 3.20
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      vxworks*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      *)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+    esac
+
+    AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+    test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+    _LT_TAGVAR(GCC, $1)="$GXX"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  CC=$lt_save_CC
+  LDCXX=$LD
+  LD=$lt_save_LD
+  GCC=$lt_save_GCC
+  with_gnu_ld=$lt_save_with_gnu_ld
+  lt_cv_path_LDCXX=$lt_cv_path_LD
+  lt_cv_path_LD=$lt_save_path_LD
+  lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+  lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library.  It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+  Foo (void) { a = 0; }
+private:
+  int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer*4 a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+  private int a;
+  public void bar (void) {
+    a = 0;
+  }
+};
+_LT_EOF
+])
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+  # Parse the compiler output and extract the necessary
+  # objects, libraries and library flags.
+
+  # Sentinel used to keep track of whether or not we are before
+  # the conftest object file.
+  pre_test_object_deps_done=no
+
+  for p in `eval "$output_verbose_link_cmd"`; do
+    case $p in
+
+    -L* | -R* | -l*)
+       # Some compilers place space between "-{L,R}" and the path.
+       # Remove the space.
+       if test $p = "-L" ||
+          test $p = "-R"; then
+	 prev=$p
+	 continue
+       else
+	 prev=
+       fi
+
+       if test "$pre_test_object_deps_done" = no; then
+	 case $p in
+	 -L* | -R*)
+	   # Internal compiler library paths should come after those
+	   # provided the user.  The postdeps already come after the
+	   # user supplied libs so there is no need to process them.
+	   if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+	   else
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+	   fi
+	   ;;
+	 # The "-l" case would never come before the object being
+	 # linked, so don't bother handling this case.
+	 esac
+       else
+	 if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+	   _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+	 else
+	   _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+	 fi
+       fi
+       ;;
+
+    *.$objext)
+       # This assumes that the test object file only shows up
+       # once in the compiler output.
+       if test "$p" = "conftest.$objext"; then
+	 pre_test_object_deps_done=yes
+	 continue
+       fi
+
+       if test "$pre_test_object_deps_done" = no; then
+	 if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+	   _LT_TAGVAR(predep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+	 fi
+       else
+	 if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+	   _LT_TAGVAR(postdep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+	 fi
+       fi
+       ;;
+
+    *) ;; # Ignore the rest.
+
+    esac
+  done
+
+  # Clean up.
+  rm -f a.out a.exe
+else
+  echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+  # Interix 3.5 installs completely hosed .la files for C++, so rather than
+  # hack all around it, let's just trust "g++" to DTRT.
+  _LT_TAGVAR(predep_objects,$1)=
+  _LT_TAGVAR(postdep_objects,$1)=
+  _LT_TAGVAR(postdeps,$1)=
+  ;;
+
+linux*)
+  case `$CC -V 2>&1 | sed 5q` in
+  *Sun\ C*)
+    # Sun C++ 5.9
+
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+
+solaris*)
+  case $cc_basename in
+  CC*)
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    # Adding this requires a known-good setup of shared libraries for
+    # Sun compiler versions before 5.6, else PIC objects from an old
+    # archive will be linked into the output, leading to subtle bugs.
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+    [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+    [Dependencies to place before and after the objects being linked to
+    create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+    [The library search path used internally by the compiler when linking
+    a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_LANG_PUSH(Fortran 77)
+if test -z "$F77" || test "X$F77" = "Xno"; then
+  _lt_disable_F77=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  CC=${F77-"f77"}
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+  GCC=$G77
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$G77"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC="$lt_save_CC"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_LANG_PUSH(Fortran)
+
+if test -z "$FC" || test "X$FC" = "Xno"; then
+  _lt_disable_FC=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  CC=${FC-"f95"}
+  compiler=$CC
+  GCC=$ac_cv_fc_compiler_gnu
+
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC="$lt_save_CC"
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+
+  _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC="$lt_save_CC"
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+  :
+  _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC="$lt_save_CC"
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+  [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+    [AC_CHECK_TOOL(GCJ, gcj,)
+      test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+      AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible.  Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+    [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+############################################################
+# NOTE: This macro has been submitted for inclusion into   #
+#  GNU Autoconf as AC_PROG_SED.  When it is available in   #
+#  a released version of Autoconf we should remove this    #
+#  macro and use it instead.                               #
+############################################################
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for lt_ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+        lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+      fi
+    done
+  done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+  test ! -f $lt_ac_sed && continue
+  cat /dev/null > conftest.in
+  lt_ac_count=0
+  echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+  # Check for GNU sed and select it if it is found.
+  if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+    lt_cv_path_SED=$lt_ac_sed
+    break
+  fi
+  while true; do
+    cat conftest.in conftest.in >conftest.tmp
+    mv conftest.tmp conftest.in
+    cp conftest.in conftest.nl
+    echo >>conftest.nl
+    $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+    cmp -s conftest.out conftest.nl || break
+    # 10000 chars as input seems more than enough
+    test $lt_ac_count -gt 10 && break
+    lt_ac_count=`expr $lt_ac_count + 1`
+    if test $lt_ac_count -gt $lt_ac_max; then
+      lt_ac_max=$lt_ac_count
+      lt_cv_path_SED=$lt_ac_sed
+    fi
+  done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_XSI_SHELLFNS
+# ---------------------
+# Bourne and XSI compatible variants of some useful shell functions.
+m4_defun([_LT_PROG_XSI_SHELLFNS],
+[case $xsi_shell in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+  func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+  # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+  # positional parameters, so assign one to ordinary parameter first.
+  func_stripname_result=${3}
+  func_stripname_result=${func_stripname_result#"${1}"}
+  func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=${1%%=*}
+  func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  case ${1} in
+    *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+    *)    func_lo2o_result=${1} ;;
+  esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=$(( $[*] ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=${#1}
+}
+
+_LT_EOF
+    ;;
+  *) # Bourne compatible functions.
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  # Extract subdirectory from the argument.
+  func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+  if test "X$func_dirname_result" = "X${1}"; then
+    func_dirname_result="${3}"
+  else
+    func_dirname_result="$func_dirname_result${2}"
+  fi
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+}
+
+dnl func_dirname_and_basename
+dnl A portable version of this function is already defined in general.m4sh
+dnl so there is no need for it here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+  case ${2} in
+    .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+    *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+  esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[[^=]]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
+  func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=`$ECHO "${1}" | $SED 's/\.[[^.]]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=`expr "$[@]"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$[1]+=\$[2]"
+}
+_LT_EOF
+    ;;
+  *)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$[1]=\$$[1]\$[2]"
+}
+
+_LT_EOF
+    ;;
+  esac
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/ltoptions.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/ltoptions.m4
new file mode 100644
index 000000000..5ef12ced2
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/ltoptions.m4
@@ -0,0 +1,369 @@
+# Helper functions for option handling.                    -*- Autoconf -*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation,
+#   Inc.
+#   Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it.  Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+        _LT_MANGLE_DEFUN([$1], [$2]),
+    [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+	    [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+		      [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME.  If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+    [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+  dnl
+  dnl Simply set some default values (i.e off) if boolean options were not
+  dnl specified:
+  _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+  ])
+  _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+  ])
+  dnl
+  dnl If no reference was made to various pairs of opposing options, then
+  dnl we run the default mode handler for the pair.  For example, if neither
+  dnl `shared' nor `disable-shared' was passed, we enable building of shared
+  dnl archives by default:
+  _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+  _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+  		   [_LT_ENABLE_FAST_INSTALL])
+  ])
+])# _LT_SET_OPTIONS
+
+
+## --------------------------------- ##
+## Macros to handle LT_INIT options. ##
+## --------------------------------- ##
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+  AC_CHECK_TOOL(AS, as, false)
+  AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+  AC_CHECK_TOOL(OBJDUMP, objdump, false)
+  ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS],      [1], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+    [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+	[build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+    _LT_DECL([build_libtool_libs], [enable_shared], [0],
+	[Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+    [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+	[build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+    _LT_DECL([build_old_libs], [enable_static], [0],
+	[Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+    [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+    [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+	 [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'.  If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+    [AS_HELP_STRING([--with-pic],
+	[try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+    [pic_mode="$withval"],
+    [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+## ----------------- ##
+## LTDL_INIT Options ##
+## ----------------- ##
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+		 [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+		 [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+		 [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+		 [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+		 [m4_define([_LTDL_TYPE], [convenience])])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/ltsugar.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/ltsugar.m4
new file mode 100644
index 000000000..9000a057d
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/ltsugar.m4
@@ -0,0 +1,123 @@
+# ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+       [$#], [2], [[$2]],
+       [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+       [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+       [$#], 1, [],
+       [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+       [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+	     [m4_foreach([_Lt_suffix],
+		]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+	[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+		 [lt_append([$1], [$2], [$3])$4],
+		 [$5])],
+	  [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+    m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+	[$5],
+    [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+  [lt_join(m4_quote(m4_default([$4], [[, ]])),
+           lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/ltversion.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/ltversion.m4
new file mode 100644
index 000000000..bf87f7713
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/ltversion.m4
@@ -0,0 +1,23 @@
+# ltversion.m4 -- version numbers			-*- Autoconf -*-
+#
+#   Copyright (C) 2004 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# Generated from ltversion.in.
+
+# serial 3134 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.2.7a])
+m4_define([LT_PACKAGE_REVISION], [1.3134])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.2.7a'
+macro_revision='1.3134'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/lt~obsolete.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/lt~obsolete.m4
new file mode 100644
index 000000000..bf92b5e07
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/lt~obsolete.m4
@@ -0,0 +1,98 @@
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions.    -*-Autoconf-*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 4 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick.  It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else.  This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION],	[AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP],		[AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT],		[AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX],	[AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN],		[AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR],		[AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL],	[AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN],		[AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER],	[AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK],		[AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE],	[AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF],	[AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O],	[AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR],		[AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR],		[AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP],	[AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC],		[AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU],		[AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG],	[AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD],	[AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS],	[AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP],	[AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP],		[AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED],		[AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME],		[AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE],	[AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE],	[AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL],		[AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP],		[AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN],		[AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER],	[AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG],		[AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL],	[AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX],		[AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77],		[AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ],		[AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
+m4_ifndef([_LT_AC_LANG_C_CONFIG],	[AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
+m4_ifndef([_LT_AC_LANG_CXX_CONFIG],	[AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
+m4_ifndef([_LT_AC_LANG_F77_CONFIG],	[AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
+m4_ifndef([_LT_AC_LANG_GCJ_CONFIG],	[AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
+m4_ifndef([_LT_AC_LANG_RC_CONFIG],	[AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
+m4_ifndef([AC_LIBTOOL_CONFIG],		[AC_DEFUN([AC_LIBTOOL_CONFIG])])
+m4_ifndef([_LT_AC_FILE_LTDLL_C],	[AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
+m4_ifndef([_LT_REQUIRED_DARWIN_CHECKS],	[AC_DEFUN([_LT_REQUIRED_DARWIN_CHECKS])])
+m4_ifndef([_LT_AC_PROG_CXXCPP],		[AC_DEFUN([_LT_AC_PROG_CXXCPP])])
+m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS],	[AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
+m4_ifndef([_LT_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_PROG_F77],		[AC_DEFUN([_LT_PROG_F77])])
+m4_ifndef([_LT_PROG_FC],		[AC_DEFUN([_LT_PROG_FC])])
+m4_ifndef([_LT_PROG_CXX],		[AC_DEFUN([_LT_PROG_CXX])])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/multi.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/multi.m4
new file mode 100644
index 000000000..10680a5b3
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/multi.m4
@@ -0,0 +1,68 @@
+##                                                          -*- Autoconf -*-
+# Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 6
+
+# AM_ENABLE_MULTILIB([MAKEFILE], [REL-TO-TOP-SRCDIR])
+# ---------------------------------------------------
+# Add --enable-multilib to configure.
+AC_DEFUN([AM_ENABLE_MULTILIB],
+[# Default to --enable-multilib
+AC_ARG_ENABLE(multilib,
+[  --enable-multilib       build many library versions (default)],
+[case "$enableval" in
+  yes) multilib=yes ;;
+  no)  multilib=no ;;
+  *)   AC_MSG_ERROR([bad value $enableval for multilib option]) ;;
+ esac],
+	      [multilib=yes])
+
+# We may get other options which we leave undocumented:
+# --with-target-subdir, --with-multisrctop, --with-multisubdir
+# See config-ml.in if you want the gory details.
+
+if test "$srcdir" = "."; then
+  if test "$with_target_subdir" != "."; then
+    multi_basedir="$srcdir/$with_multisrctop../$2"
+  else
+    multi_basedir="$srcdir/$with_multisrctop$2"
+  fi
+else
+  multi_basedir="$srcdir/$2"
+fi
+AC_SUBST(multi_basedir)
+
+# Even if the default multilib is not a cross compilation,
+# it may be that some of the other multilibs are.
+if test $cross_compiling = no && test $multilib = yes \
+   && test "x${with_multisubdir}" != x ; then
+   cross_compiling=maybe
+fi
+
+AC_OUTPUT_COMMANDS([
+# Only add multilib support code if we just rebuilt the top-level
+# Makefile.
+case " $CONFIG_FILES " in
+ *" ]m4_default([$1],Makefile)[ "*)
+   ac_file=]m4_default([$1],Makefile)[ . ${multi_basedir}/config-ml.in
+   ;;
+esac],
+		   [
+srcdir="$srcdir"
+host="$host"
+target="$target"
+with_multisubdir="$with_multisubdir"
+with_multisrctop="$with_multisrctop"
+with_target_subdir="$with_target_subdir"
+ac_configure_args="${multilib_arg} ${ac_configure_args}"
+multi_basedir="$multi_basedir"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+CC="$CC"
+CXX="$CXX"
+GFORTRAN="$GFORTRAN"
+GDC="$GDC"])])dnl
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/override.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/override.m4
new file mode 100644
index 000000000..b3b7f97b0
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/override.m4
@@ -0,0 +1,117 @@
+dnl Fix Autoconf bugs by overriding broken internal Autoconf
+dnl macros with backports of fixes from newer releases.
+dnl
+dnl The override bits of this file should be a no-op for the newest
+dnl Autoconf version, which means they can be removed once the complete
+dnl tree has moved to a new enough Autoconf version.
+dnl
+dnl The _GCC_AUTOCONF_VERSION_TEST ensures that exactly the desired
+dnl Autoconf version is used.  It should be kept for consistency.
+
+dnl Use ifdef/ifelse over m4_ifdef/m4_ifelse to be clean for 2.13.
+ifdef([m4_PACKAGE_VERSION], [
+
+dnl Provide m4_copy_force and m4_rename_force for old Autoconf versions.
+
+m4_ifndef([m4_copy_force],
+[m4_define([m4_copy_force],
+[m4_ifdef([$2], [m4_undefine([$2])])m4_copy($@)])])
+
+m4_ifndef([m4_rename_force],
+[m4_define([m4_rename_force],
+[m4_ifdef([$2], [m4_undefine([$2])])m4_rename($@)])])
+
+dnl AC_DEFUN a commonly used macro so this file is picked up.
+m4_copy([AC_PREREQ], [_AC_PREREQ])
+AC_DEFUN([AC_PREREQ], [frob])
+m4_copy_force([_AC_PREREQ], [AC_PREREQ])
+
+
+dnl Ensure exactly this Autoconf version is used
+m4_ifndef([_GCC_AUTOCONF_VERSION],
+  [m4_define([_GCC_AUTOCONF_VERSION], [2.69])])
+
+dnl Test for the exact version when AC_INIT is expanded.
+dnl This allows to update the tree in steps (for testing)
+dnl by putting
+dnl   m4_define([_GCC_AUTOCONF_VERSION], [X.Y])
+dnl in configure.ac before AC_INIT,
+dnl without rewriting this file.
+dnl Or for updating the whole tree at once with the definition above.
+AC_DEFUN([_GCC_AUTOCONF_VERSION_CHECK],
+[m4_if(m4_defn([_GCC_AUTOCONF_VERSION]),
+  m4_defn([m4_PACKAGE_VERSION]), [],
+  [m4_fatal([Please use exactly Autoconf ]_GCC_AUTOCONF_VERSION[ instead of ]m4_defn([m4_PACKAGE_VERSION])[.])])
+])
+dnl don't do this for libbacktrace
+dnl m4_define([AC_INIT], m4_defn([AC_INIT])[
+dnl _GCC_AUTOCONF_VERSION_CHECK
+dnl ])
+
+
+dnl Ensure we do not use a buggy M4.
+m4_if(m4_index([..wi.d.], [.d.]), [-1],
+  [m4_fatal(m4_do([m4 with buggy strstr detected.  Please install
+GNU M4 1.4.16 or newer and set the M4 environment variable]))])
+
+
+dnl Fix 2.64 cross compile detection for AVR and RTEMS
+dnl by not trying to compile fopen.
+m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.64],
+  [m4_foreach([_GCC_LANG], [C, C++, Fortran, Fortran 77],
+     [m4_define([_AC_LANG_IO_PROGRAM(]_GCC_LANG[)], m4_defn([AC_LANG_PROGRAM(]_GCC_LANG[)]))])])
+
+m4_version_prereq([2.66],, [
+dnl We need AC_CHECK_DECL which works for overloaded C++ functions.
+
+# _AC_CHECK_DECL_BODY
+# -------------------
+# Shell function body for AC_CHECK_DECL.
+m4_define([_AC_CHECK_DECL_BODY],
+[  AS_LINENO_PUSH([$[]1])
+  [as_decl_name=`echo $][2|sed 's/ *(.*//'`]
+  [as_decl_use=`echo $][2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`]
+  AC_CACHE_CHECK([whether $as_decl_name is declared], [$[]3],
+  [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$[]4],
+[@%:@ifndef $[]as_decl_name
+@%:@ifdef __cplusplus
+  (void) $[]as_decl_use;
+@%:@else
+  (void) $[]as_decl_name;
+@%:@endif
+@%:@endif
+])],
+		   [AS_VAR_SET([$[]3], [yes])],
+		   [AS_VAR_SET([$[]3], [no])])])
+  AS_LINENO_POP
+])# _AC_CHECK_DECL_BODY
+
+# _AC_CHECK_DECLS(SYMBOL, ACTION-IF_FOUND, ACTION-IF-NOT-FOUND,
+#                 INCLUDES)
+# -------------------------------------------------------------
+# Helper to AC_CHECK_DECLS, which generates the check for a single
+# SYMBOL with INCLUDES, performs the AC_DEFINE, then expands
+# ACTION-IF-FOUND or ACTION-IF-NOT-FOUND.
+m4_define([_AC_CHECK_DECLS],
+[AC_CHECK_DECL([$1], [ac_have_decl=1], [ac_have_decl=0], [$4])]dnl
+[AC_DEFINE_UNQUOTED(AS_TR_CPP(m4_bpatsubst(HAVE_DECL_[$1],[ *(.*])),
+  [$ac_have_decl],
+  [Define to 1 if you have the declaration of `$1',
+   and to 0 if you don't.])]dnl
+[m4_ifvaln([$2$3], [AS_IF([test $ac_have_decl = 1], [$2], [$3])])])
+
+])
+
+dnl If flex/lex are not found, the top level configure sets LEX to
+dnl "/path_to/missing flex".  When AC_PROG_LEX tries to find the flex
+dnl output file, it calls $LEX to do so, but the current lightweight
+dnl "missing" won't create a file.  This results in an error.
+dnl Avoid calling the bulk of AC_PROG_LEX when $LEX is "missing".
+AC_DEFUN_ONCE([AC_PROG_LEX],
+[AC_CHECK_PROGS(LEX, flex lex, :)
+case "$LEX" in
+  :|*"missing "*) ;;
+  *) _AC_PROG_LEX_YYTEXT_DECL ;;
+esac])
+
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/unwind_ipinfo.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/unwind_ipinfo.m4
new file mode 100644
index 000000000..efc79903b
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/unwind_ipinfo.m4
@@ -0,0 +1,37 @@
+dnl
+dnl Check whether _Unwind_GetIPInfo is available without doing a link
+dnl test so we can use this with libstdc++-v3 and libjava.  Need to
+dnl use $target to set defaults because automatic checking is not possible
+dnl without a link test (and maybe even with a link test).
+dnl
+
+AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
+  AC_ARG_WITH(system-libunwind,
+  [  --with-system-libunwind use installed libunwind])
+  # If system-libunwind was not specifically set, pick a default setting.
+  if test x$with_system_libunwind = x; then
+    case ${target} in
+      ia64-*-hpux*) with_system_libunwind=yes ;;
+      *) with_system_libunwind=no ;;
+    esac
+  fi
+  # Based on system-libunwind and target, do we have ipinfo?
+  if  test x$with_system_libunwind = xyes; then
+    case ${target} in
+      ia64-*-*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+  else
+    # Darwin before version 9 does not have _Unwind_GetIPInfo.
+    changequote(,)
+    case ${target} in
+      *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+    changequote([,])
+  fi
+
+  if test x$have_unwind_getipinfo = xyes; then
+    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
+  fi
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/config/warnings.m4 b/fluent-bit/lib/libbacktrace-8602fda/config/warnings.m4
new file mode 100644
index 000000000..ce007f9b7
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/config/warnings.m4
@@ -0,0 +1,227 @@
+# Autoconf include file defining macros related to compile-time warnings.
+
+# Copyright 2004, 2005, 2007, 2009, 2011 Free Software Foundation, Inc.
+
+#This file is part of GCC.
+
+#GCC is free software; you can redistribute it and/or modify it under
+#the terms of the GNU General Public License as published by the Free
+#Software Foundation; either version 3, or (at your option) any later
+#version.
+
+#GCC is distributed in the hope that it will be useful, but WITHOUT
+#ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+#FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+#for more details.
+
+#You should have received a copy of the GNU General Public License
+#along with GCC; see the file COPYING3.  If not see
+#<http://www.gnu.org/licenses/>.
+
+# ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS])
+#   Sets @VARIABLE@ to the subset of the given options which the
+#   compiler accepts.
+AC_DEFUN([ACX_PROG_CC_WARNING_OPTS],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_CFLAGS])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+save_CFLAGS="$CFLAGS"
+for real_option in $1; do
+  # Do the check with the no- prefix removed since gcc silently
+  # accepts any -Wno-* option on purpose
+  case $real_option in
+    -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
+    *) option=$real_option ;;
+  esac
+  AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
+  AC_CACHE_CHECK([whether $CC supports $option], acx_Woption,
+    [CFLAGS="$option"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+      [AS_VAR_SET(acx_Woption, yes)],
+      [AS_VAR_SET(acx_Woption, no)])
+  ])
+  AS_IF([test AS_VAR_GET(acx_Woption) = yes],
+        [acx_Var="$acx_Var${acx_Var:+ }$real_option"])
+  AS_VAR_POPDEF([acx_Woption])dnl
+done
+CFLAGS="$save_CFLAGS"
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
+])# ACX_PROG_CC_WARNING_OPTS
+
+# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
+#   Append to VARIABLE "-pedantic" + the argument, if the compiler is GCC
+#   and accepts all of those options simultaneously, otherwise to nothing.
+AC_DEFUN([ACX_PROG_CC_WARNING_ALMOST_PEDANTIC],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+# Do the check with the no- prefix removed from the warning options
+# since gcc silently accepts any -Wno-* option on purpose
+m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl
+AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl
+AS_IF([test "$GCC" = yes],
+[AC_CACHE_CHECK([whether $CC supports -pedantic ]acx_Woptions, acx_Pedantic,
+[save_CFLAGS="$CFLAGS"
+CFLAGS="-pedantic acx_Woptions"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+   [AS_VAR_SET(acx_Pedantic, yes)],
+   [AS_VAR_SET(acx_Pedantic, no)])
+CFLAGS="$save_CFLAGS"])
+AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
+      [acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
+])
+AS_VAR_POPDEF([acx_Pedantic])dnl
+m4_popdef([acx_Woptions])dnl
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
+])# ACX_PROG_CC_WARNING_ALMOST_PEDANTIC
+
+# ACX_PROG_CC_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
+#   sets @VARIABLE@ to "-Werror" if the compiler is GCC >=x.y.z, or if
+#   --enable-werror-always was given on the command line, otherwise
+#   to nothing.
+#   If the argument is the word "manual" instead of a version number,
+#   then @VARIABLE@ will be set to -Werror only if --enable-werror-always
+#   appeared on the configure command line.
+AC_DEFUN([ACX_PROG_CC_WARNINGS_ARE_ERRORS],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_LANG_PUSH(C)
+m4_pushdef([acx_Var], [m4_default([$2], [WERROR])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+AC_ARG_ENABLE(werror-always, 
+    AS_HELP_STRING([--enable-werror-always],
+		   [enable -Werror despite compiler version]),
+[], [enable_werror_always=no])
+AS_IF([test $enable_werror_always = yes],
+      [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+ m4_if($1, [manual],,
+ [AS_VAR_PUSHDEF([acx_GCCvers], [acx_cv_prog_cc_gcc_$1_or_newer])dnl
+  AC_CACHE_CHECK([whether $CC is GCC >=$1], acx_GCCvers,
+    [set fnord `echo $1 | tr '.' ' '`
+     shift
+     AC_PREPROC_IFELSE(
+[#if __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ \
+  < [$]1 * 10000 + [$]2 * 100 + [$]3
+#error insufficient
+#endif],
+   [AS_VAR_SET(acx_GCCvers, yes)],
+   [AS_VAR_SET(acx_GCCvers, no)])])
+ AS_IF([test AS_VAR_GET(acx_GCCvers) = yes],
+       [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+  AS_VAR_POPDEF([acx_GCCvers])])
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C)
+])# ACX_PROG_CC_WARNINGS_ARE_ERRORS
+
+# ACX_PROG_CXX_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CXXFLAGS])
+#   Sets @VARIABLE@ to the subset of the given options which the
+#   compiler accepts.
+AC_DEFUN([ACX_PROG_CXX_WARNING_OPTS],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_CXXFLAGS])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+save_CXXFLAGS="$CXXFLAGS"
+for real_option in $1; do
+  # Do the check with the no- prefix removed since gcc silently
+  # accepts any -Wno-* option on purpose
+  case $real_option in
+    -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
+    *) option=$real_option ;;
+  esac
+  AS_VAR_PUSHDEF([acx_Woption], [acx_cv_prog_cc_warning_$option])
+  AC_CACHE_CHECK([whether $CXX supports $option], acx_Woption,
+    [CXXFLAGS="$option"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+      [AS_VAR_SET(acx_Woption, yes)],
+      [AS_VAR_SET(acx_Woption, no)])
+  ])
+  AS_IF([test AS_VAR_GET(acx_Woption) = yes],
+        [acx_Var="$acx_Var${acx_Var:+ }$real_option"])
+  AS_VAR_POPDEF([acx_Woption])dnl
+done
+CXXFLAGS="$save_CXXFLAGS"
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNING_OPTS
+
+# ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(WARNINGS, [VARIABLE = WARN_PEDANTIC])
+#   Append to VARIABLE "-pedantic" + the argument, if the compiler is G++
+#   and accepts all of those options simultaneously, otherwise to nothing.
+AC_DEFUN([ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WARN_PEDANTIC])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+# Do the check with the no- prefix removed from the warning options
+# since gcc silently accepts any -Wno-* option on purpose
+m4_pushdef([acx_Woptions], [m4_bpatsubst([$1], [-Wno-], [-W])])dnl
+AS_VAR_PUSHDEF([acx_Pedantic], [acx_cv_prog_cc_pedantic_]acx_Woptions)dnl
+AS_IF([test "$GXX" = yes],
+[AC_CACHE_CHECK([whether $CXX supports -pedantic ]acx_Woptions, acx_Pedantic,
+[save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="-pedantic acx_Woptions"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],
+   [AS_VAR_SET(acx_Pedantic, yes)],
+   [AS_VAR_SET(acx_Pedantic, no)])
+CXXFLAGS="$save_CXXFLAGS"])
+AS_IF([test AS_VAR_GET(acx_Pedantic) = yes],
+      [acx_Var="$acx_Var${acx_Var:+ }-pedantic $1"])
+])
+AS_VAR_POPDEF([acx_Pedantic])dnl
+m4_popdef([acx_Woptions])dnl
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC
+
+# ACX_PROG_CXX_WARNINGS_ARE_ERRORS([x.y.z], [VARIABLE = WERROR])
+#   sets @VARIABLE@ to "-Werror" if the compiler is G++ >=x.y.z, or if
+#   --enable-werror-always was given on the command line, otherwise
+#   to nothing.
+#   If the argument is the word "manual" instead of a version number,
+#   then @VARIABLE@ will be set to -Werror only if --enable-werror-always
+#   appeared on the configure command line.
+AC_DEFUN([ACX_PROG_CXX_WARNINGS_ARE_ERRORS],
+[AC_REQUIRE([AC_PROG_CXX])dnl
+AC_LANG_PUSH(C++)
+m4_pushdef([acx_Var], [m4_default([$2], [WERROR])])dnl
+AC_SUBST(acx_Var)dnl
+m4_expand_once([acx_Var=
+],m4_quote(acx_Var=))dnl
+AC_ARG_ENABLE(werror-always,
+    AS_HELP_STRING([--enable-werror-always],
+		   [enable -Werror despite compiler version]),
+[], [enable_werror_always=no])
+AS_IF([test $enable_werror_always = yes],
+      [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+ m4_if($1, [manual],,
+ [AS_VAR_PUSHDEF([acx_GXXvers], [acx_cv_prog_cxx_gxx_$1_or_newer])dnl
+  AC_CACHE_CHECK([whether $CXX is G++ >=$1], acx_GXXvers,
+    [set fnord `echo $1 | tr '.' ' '`
+     shift
+     AC_PREPROC_IFELSE(
+[#if __GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ \
+  < [$]1 * 10000 + [$]2 * 100 + [$]3
+#error insufficient
+#endif],
+   [AS_VAR_SET(acx_GXXvers, yes)],
+   [AS_VAR_SET(acx_GXXvers, no)])])
+ AS_IF([test AS_VAR_GET(acx_GXXvers) = yes],
+       [acx_Var="$acx_Var${acx_Var:+ }-Werror"])
+  AS_VAR_POPDEF([acx_GXXvers])])
+m4_popdef([acx_Var])dnl
+AC_LANG_POP(C++)
+])# ACX_PROG_CXX_WARNINGS_ARE_ERRORS
diff --git a/fluent-bit/lib/libbacktrace-8602fda/configure b/fluent-bit/lib/libbacktrace-8602fda/configure
new file mode 100755
index 000000000..7dfba5e65
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/configure
@@ -0,0 +1,15569 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.69 for package-unused version-unused.
+#
+#
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1
+
+  test -n \"\${ZSH_VERSION+set}\${BASH_VERSION+set}\" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test \"X\`printf %s \$ECHO\`\" = \"X\$ECHO\" \\
+      || test \"X\`print -r -- \$ECHO\`\" = \"X\$ECHO\" ) || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='package-unused'
+PACKAGE_TARNAME='libbacktrace'
+PACKAGE_VERSION='version-unused'
+PACKAGE_STRING='package-unused version-unused'
+PACKAGE_BUGREPORT=''
+PACKAGE_URL=''
+
+ac_unique_file="backtrace.h"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+LIBOBJS
+NATIVE_FALSE
+NATIVE_TRUE
+HAVE_LIBLZMA_FALSE
+HAVE_LIBLZMA_TRUE
+HAVE_MINIDEBUG_FALSE
+HAVE_MINIDEBUG_TRUE
+HAVE_COMM_FALSE
+HAVE_COMM_TRUE
+COMM
+HAVE_XZ_FALSE
+HAVE_XZ_TRUE
+XZ
+USE_DSYMUTIL_FALSE
+USE_DSYMUTIL_TRUE
+HAVE_OBJCOPY_DEBUGLINK_FALSE
+HAVE_OBJCOPY_DEBUGLINK_TRUE
+READELF
+OBJCOPY
+HAVE_COMPRESSED_DEBUG_FALSE
+HAVE_COMPRESSED_DEBUG_TRUE
+HAVE_ZLIB_FALSE
+HAVE_ZLIB_TRUE
+HAVE_DWARF5_FALSE
+HAVE_DWARF5_TRUE
+HAVE_PTHREAD_FALSE
+HAVE_PTHREAD_TRUE
+PTHREAD_CFLAGS
+CLOCK_GETTIME_LINK
+BACKTRACE_USES_MALLOC
+ALLOC_FILE
+VIEW_FILE
+BACKTRACE_SUPPORTS_DATA
+BACKTRACE_SUPPORTED
+HAVE_ELF_FALSE
+HAVE_ELF_TRUE
+FORMAT_FILE
+BACKTRACE_SUPPORTS_THREADS
+PIC_FLAG
+WARN_FLAGS
+EXTRA_FLAGS
+BACKTRACE_FILE
+OTOOL64
+OTOOL
+LIPO
+NMEDIT
+DSYMUTIL
+AR
+OBJDUMP
+LN_S
+NM
+ac_ct_DUMPBIN
+DUMPBIN
+LD
+FGREP
+SED
+LIBTOOL
+HAVE_DWZ_FALSE
+HAVE_DWZ_TRUE
+DWZ
+RANLIB
+MAINT
+MAINTAINER_MODE_FALSE
+MAINTAINER_MODE_TRUE
+AM_BACKSLASH
+AM_DEFAULT_VERBOSITY
+AM_DEFAULT_V
+AM_V
+am__untar
+am__tar
+AMTAR
+am__leading_dot
+SET_MAKE
+AWK
+mkdir_p
+MKDIR_P
+INSTALL_STRIP_PROGRAM
+STRIP
+install_sh
+MAKEINFO
+AUTOHEADER
+AUTOMAKE
+AUTOCONF
+ACLOCAL
+VERSION
+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+libtool_VERSION
+EGREP
+GREP
+CPP
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+target_os
+target_vendor
+target_cpu
+target
+host_os
+host_vendor
+host_cpu
+host
+build_os
+build_vendor
+build_cpu
+build
+multi_basedir
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_multilib
+enable_shared
+enable_silent_rules
+enable_maintainer_mode
+with_target_subdir
+enable_static
+with_pic
+enable_fast_install
+with_gnu_ld
+enable_libtool_lock
+enable_largefile
+enable_werror
+with_system_libunwind
+enable_host_shared
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP
+OBJCOPY
+DSYMUTIL
+NM'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures package-unused version-unused to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/libbacktrace]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+Program names:
+  --program-prefix=PREFIX            prepend PREFIX to installed program names
+  --program-suffix=SUFFIX            append SUFFIX to installed program names
+  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+  --target=TARGET   configure for building compilers for TARGET [HOST]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of package-unused version-unused:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-multilib       build many library versions (default)
+  --enable-shared[=PKGS]  build shared libraries [default=no]
+  --enable-silent-rules   less verbose build output (undo: "make V=1")
+  --disable-silent-rules  verbose build output (undo: "make V=0")
+  --enable-maintainer-mode
+                          enable make rules and dependencies not useful (and
+                          sometimes confusing) to the casual installer
+  --enable-static[=PKGS]  build static libraries [default=yes]
+  --enable-fast-install[=PKGS]
+                          optimize for fast installation [default=yes]
+  --disable-libtool-lock  avoid locking (might break parallel builds)
+  --disable-largefile     omit support for large files
+  --disable-werror        disable building with -Werror
+  --enable-host-shared    build host code as shared libraries
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target
+  --with-pic              try to use only PIC/non-PIC objects [default=use
+                          both]
+  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
+  --with-system-libunwind use installed libunwind
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+  OBJCOPY     location of objcopy
+  DSYMUTIL    location of dsymutil
+  NM          location of nm
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+package-unused configure version-unused
+generated by GNU Autoconf 2.69
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if eval \${$3+:} false; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_header_compiler=yes
+else
+  ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ac_header_preproc=yes
+else
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+  yes:no: )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+  no:yes:* )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_mongrel
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
+# ---------------------------------------------
+# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
+# accordingly.
+ac_fn_c_check_decl ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  as_decl_name=`echo $2|sed 's/ *(.*//'`
+  as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+#ifndef $as_decl_name
+#ifdef __cplusplus
+  (void) $as_decl_use;
+#else
+  (void) $as_decl_name;
+#endif
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_decl
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by package-unused $as_me version-unused, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_config_headers="$ac_config_headers config.h"
+
+
+
+# with_target_subdir is used when configured as part of a GCC tree.
+if test -n "${with_target_subdir}"; then
+  # Default to --enable-multilib
+# Check whether --enable-multilib was given.
+if test "${enable_multilib+set}" = set; then :
+  enableval=$enable_multilib; case "$enableval" in
+  yes) multilib=yes ;;
+  no)  multilib=no ;;
+  *)   as_fn_error $? "bad value $enableval for multilib option" "$LINENO" 5 ;;
+ esac
+else
+  multilib=yes
+fi
+
+
+# We may get other options which we leave undocumented:
+# --with-target-subdir, --with-multisrctop, --with-multisubdir
+# See config-ml.in if you want the gory details.
+
+if test "$srcdir" = "."; then
+  if test "$with_target_subdir" != "."; then
+    multi_basedir="$srcdir/$with_multisrctop../.."
+  else
+    multi_basedir="$srcdir/$with_multisrctop.."
+  fi
+else
+  multi_basedir="$srcdir/.."
+fi
+
+
+# Even if the default multilib is not a cross compilation,
+# it may be that some of the other multilibs are.
+if test $cross_compiling = no && test $multilib = yes \
+   && test "x${with_multisubdir}" != x ; then
+   cross_compiling=maybe
+fi
+
+ac_config_commands="$ac_config_commands default-1"
+
+fi
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+  if test -f "$ac_dir/install-sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f "$ac_dir/install.sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f "$ac_dir/shtool"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if ${ac_cv_build+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if ${ac_cv_host+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking target system type" >&5
+$as_echo_n "checking target system type... " >&6; }
+if ${ac_cv_target+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$target_alias" = x; then
+  ac_cv_target=$ac_cv_host
+else
+  ac_cv_target=`$SHELL "$ac_aux_dir/config.sub" $target_alias` ||
+    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $target_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_target" >&5
+$as_echo "$ac_cv_target" >&6; }
+case $ac_cv_target in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical target" "$LINENO" 5;;
+esac
+target=$ac_cv_target
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_target
+shift
+target_cpu=$1
+target_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+target_os=$*
+IFS=$ac_save_IFS
+case $target_os in *\ *) target_os=`echo "$target_os" | sed 's/ /-/g'`;; esac
+
+
+# The aliases save the names the user supplied, while $host etc.
+# will get canonicalized.
+test -n "$target_alias" &&
+  test "$program_prefix$program_suffix$program_transform_name" = \
+    NONENONEs,x,x, &&
+  program_prefix=${target_alias}-
+
+target_alias=${target_alias-$host_alias}
+
+# Expand $ac_aux_dir to an absolute path.
+am_aux_dir=`cd "$ac_aux_dir" && pwd`
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+if test -z "$ac_file"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if ${ac_cv_objext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5
+$as_echo_n "checking whether $CC understands -c and -o together... " >&6; }
+if ${am_cv_prog_cc_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if { echo "$as_me:$LINENO: $CC -c conftest.$ac_ext -o conftest2.$ac_objext" >&5
+   ($CC -c conftest.$ac_ext -o conftest2.$ac_objext) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_prog_cc_c_o" >&5
+$as_echo "$am_cv_prog_cc_c_o" >&6; }
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if ${ac_cv_prog_CPP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if ${ac_cv_header_stdc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+  ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default"
+if test "x$ac_cv_header_minix_config_h" = xyes; then :
+  MINIX=yes
+else
+  MINIX=
+fi
+
+
+  if test "$MINIX" = yes; then
+
+$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h
+
+
+$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h
+
+
+$as_echo "#define _MINIX 1" >>confdefs.h
+
+  fi
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
+$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; }
+if ${ac_cv_safe_to_define___extensions__+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#         define __EXTENSIONS__ 1
+          $ac_includes_default
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_safe_to_define___extensions__=yes
+else
+  ac_cv_safe_to_define___extensions__=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
+$as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
+  test $ac_cv_safe_to_define___extensions__ = yes &&
+    $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h
+
+  $as_echo "#define _ALL_SOURCE 1" >>confdefs.h
+
+  $as_echo "#define _GNU_SOURCE 1" >>confdefs.h
+
+  $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
+
+  $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h
+
+
+
+# Default to not building a shared library.
+# Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+  enableval=$enable_shared; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_shared=no
+fi
+
+
+
+
+
+
+
+
+
+
+libtool_VERSION=1:0:0
+
+
+# 1.11.1: Require that version of automake.
+# foreign: Don't require README, INSTALL, NEWS, etc.
+# no-define: Don't define PACKAGE and VERSION.
+# no-dependencies: Don't generate automatic dependencies.
+#    (because it breaks when using bootstrap-lean, since some of the
+#    headers are gone at "make install" time).
+# -Wall: Issue all automake warnings.
+# -Wno-portability: Don't warn about constructs supported by GNU make.
+#    (because GCC requires GNU make anyhow).
+am__api_version='1.15'
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if ${ac_cv_path_install+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+  ./ | .// | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[\\\"\#\$\&\'\`$am_lf]*)
+    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+  *[\\\"\#\$\&\'\`$am_lf\ \	]*)
+    as_fn_error $? "unsafe srcdir value: '$srcdir'" "$LINENO" 5;;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$*" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$*" != "X $srcdir/configure conftest.file" \
+	&& test "$*" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	as_fn_error $? "ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment" "$LINENO" 5
+     fi
+     if test "$2" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$2" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   as_fn_error $? "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+
+rm -f conftest.file
+
+test "$program_prefix" != NONE &&
+  program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --is-lightweight"; then
+  am_missing_run="$MISSING "
+else
+  am_missing_run=
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: 'missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: 'missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+  if ${ac_cv_path_mkdir+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in mkdir gmkdir; do
+	 for ac_exec_ext in '' $ac_executable_extensions; do
+	   as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue
+	   case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+	     'mkdir (GNU coreutils) '* | \
+	     'mkdir (coreutils) '* | \
+	     'mkdir (fileutils) '4.1*)
+	       ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+	       break 3;;
+	   esac
+	 done
+       done
+  done
+IFS=$as_save_IFS
+
+fi
+
+  test -d ./--version && rmdir ./--version
+  if test "${ac_cv_path_mkdir+set}" = set; then
+    MKDIR_P="$ac_cv_path_mkdir -p"
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for MKDIR_P within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    MKDIR_P="$ac_install_sh -d"
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AWK+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+  SET_MAKE=
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+# Check whether --enable-silent-rules was given.
+if test "${enable_silent_rules+set}" = set; then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=1;;
+esac
+am_make=${MAKE-make}
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+$as_echo_n "checking whether $am_make supports nested variables... " >&6; }
+if ${am_cv_make_support_nested_variables+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if $as_echo 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+$as_echo "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  am__isrc=' -I$(srcdir)'
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='libbacktrace'
+ VERSION='version-unused'
+
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# For better backward compatibility.  To be removed once Automake 1.9.x
+# dies out for good.  For more background, see:
+# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+mkdir_p='$(MKDIR_P)'
+
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
+# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AMTAR='$${TAR-tar}'
+
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar  pax cpio none'
+
+am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
+
+
+
+
+
+
+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <http://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    as_fn_error $? "Your 'rm' program is bad, sorry." "$LINENO" 5
+  fi
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
+$as_echo_n "checking whether to enable maintainer-specific portions of Makefiles... " >&6; }
+    # Check whether --enable-maintainer-mode was given.
+if test "${enable_maintainer_mode+set}" = set; then :
+  enableval=$enable_maintainer_mode; USE_MAINTAINER_MODE=$enableval
+else
+  USE_MAINTAINER_MODE=no
+fi
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $USE_MAINTAINER_MODE" >&5
+$as_echo "$USE_MAINTAINER_MODE" >&6; }
+   if test $USE_MAINTAINER_MODE = yes; then
+  MAINTAINER_MODE_TRUE=
+  MAINTAINER_MODE_FALSE='#'
+else
+  MAINTAINER_MODE_TRUE='#'
+  MAINTAINER_MODE_FALSE=
+fi
+
+  MAINT=$MAINTAINER_MODE_TRUE
+
+
+
+
+# Check whether --with-target-subdir was given.
+if test "${with_target_subdir+set}" = set; then :
+  withval=$with_target_subdir;
+fi
+
+
+# We must force CC to /not/ be precious variables; otherwise
+# the wrong, non-multilib-adjusted value will be used in multilibs.
+# As a side effect, we have to subst CFLAGS ourselves.
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5
+$as_echo_n "checking whether $CC understands -c and -o together... " >&6; }
+if ${am_cv_prog_cc_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if { echo "$as_me:$LINENO: $CC -c conftest.$ac_ext -o conftest2.$ac_objext" >&5
+   ($CC -c conftest.$ac_ext -o conftest2.$ac_objext) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_prog_cc_c_o" >&5
+$as_echo "$am_cv_prog_cc_c_o" >&6; }
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AWK+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+case "$AWK" in
+"") as_fn_error $? "can't build without awk" "$LINENO" 5 ;;
+esac
+
+# Extract the first word of "dwz", so it can be a program name with args.
+set dummy dwz; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DWZ+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DWZ"; then
+  ac_cv_prog_DWZ="$DWZ" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_DWZ="dwz"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DWZ=$ac_cv_prog_DWZ
+if test -n "$DWZ"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DWZ" >&5
+$as_echo "$DWZ" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ if test "$DWZ" != ""; then
+  HAVE_DWZ_TRUE=
+  HAVE_DWZ_FALSE='#'
+else
+  HAVE_DWZ_TRUE='#'
+  HAVE_DWZ_FALSE=
+fi
+
+
+case `pwd` in
+  *\ * | *\	*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
+$as_echo "$as_me: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&2;} ;;
+esac
+
+
+
+macro_version='2.2.7a'
+macro_revision='1.3134'
+
+
+
+
+
+
+
+
+
+
+
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to print strings" >&5
+$as_echo_n "checking how to print strings... " >&6; }
+# Test print first, because it will be a builtin if present.
+if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO ""
+}
+
+case "$ECHO" in
+  printf*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: printf" >&5
+$as_echo "printf" >&6; } ;;
+  print*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: print -r" >&5
+$as_echo "print -r" >&6; } ;;
+  *) { $as_echo "$as_me:${as_lineno-$LINENO}: result: cat" >&5
+$as_echo "cat" >&6; } ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+$as_echo_n "checking for a sed that does not truncate output... " >&6; }
+if ${ac_cv_path_SED+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+            ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+     for ac_i in 1 2 3 4 5 6 7; do
+       ac_script="$ac_script$as_nl$ac_script"
+     done
+     echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+     { ac_script=; unset ac_script;}
+     if test -z "$SED"; then
+  ac_path_SED_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_SED" || continue
+# Check for GNU ac_path_SED and select it if it is found.
+  # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+  ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo '' >> "conftest.nl"
+    "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_SED_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_SED="$ac_path_SED"
+      ac_path_SED_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_SED_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_SED"; then
+    as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5
+  fi
+else
+  ac_cv_path_SED=$SED
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+$as_echo "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+  rm -f conftest.sed
+
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+$as_echo_n "checking for fgrep... " >&6; }
+if ${ac_cv_path_FGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+   then ac_cv_path_FGREP="$GREP -F"
+   else
+     if test -z "$FGREP"; then
+  ac_path_FGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in fgrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_FGREP" || continue
+# Check for GNU ac_path_FGREP and select it if it is found.
+  # Check for GNU $ac_path_FGREP
+case `"$ac_path_FGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'FGREP' >> "conftest.nl"
+    "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_FGREP="$ac_path_FGREP"
+      ac_path_FGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_FGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_FGREP"; then
+    as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_FGREP=$FGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+$as_echo "$ac_cv_path_FGREP" >&6; }
+ FGREP="$ac_cv_path_FGREP"
+
+
+test -z "$GREP" && GREP=grep
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then :
+  withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else
+  with_gnu_ld=no
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+$as_echo_n "checking for ld used by $CC... " >&6; }
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [\\/]* | ?:[\\/]*)
+      re_direlt='/[^/][^/]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+$as_echo_n "checking for GNU ld... " >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+$as_echo_n "checking for non-GNU ld... " >&6; }
+fi
+if ${lt_cv_path_LD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break
+	;;
+      *)
+	test "$with_gnu_ld" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi
+fi
+
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
+$as_echo "$LD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
+if ${lt_cv_prog_gnu_ld+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  lt_cv_prog_gnu_ld=yes
+  ;;
+*)
+  lt_cv_prog_gnu_ld=no
+  ;;
+esac
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_gnu_ld" >&5
+$as_echo "$lt_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$lt_cv_prog_gnu_ld
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
+$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
+if ${lt_cv_path_NM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
+$as_echo "$lt_cv_path_NM" >&6; }
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in dumpbin "link -dump"
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DUMPBIN+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DUMPBIN"; then
+  ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DUMPBIN=$ac_cv_prog_DUMPBIN
+if test -n "$DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5
+$as_echo "$DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$DUMPBIN" && break
+  done
+fi
+if test -z "$DUMPBIN"; then
+  ac_ct_DUMPBIN=$DUMPBIN
+  for ac_prog in dumpbin "link -dump"
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DUMPBIN+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DUMPBIN"; then
+  ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
+if test -n "$ac_ct_DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5
+$as_echo "$ac_ct_DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_DUMPBIN" && break
+done
+
+  if test "x$ac_ct_DUMPBIN" = x; then
+    DUMPBIN=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DUMPBIN=$ac_ct_DUMPBIN
+  fi
+fi
+
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
+$as_echo_n "checking the name lister ($NM) interface... " >&6; }
+if ${lt_cv_nm_interface+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: output\"" >&5)
+  cat conftest.out >&5
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
+$as_echo "$lt_cv_nm_interface" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
+$as_echo_n "checking whether ln -s works... " >&6; }
+LN_S=$as_ln_s
+if test "$LN_S" = "ln -s"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
+$as_echo "no, using $LN_S" >&6; }
+fi
+
+# find the maximum length of command line arguments
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
+$as_echo_n "checking the maximum length of command line arguments... " >&6; }
+if ${lt_cv_sys_max_cmd_len+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+    i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[	 ]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+
+fi
+
+if test -n $lt_cv_sys_max_cmd_len ; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
+$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
+$as_echo "none" >&6; }
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+
+
+
+
+
+
+: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
+$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
+$as_echo "$xsi_shell" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
+$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
+$as_echo "$lt_shell_append" >&6; }
+
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+
+
+
+
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
+$as_echo_n "checking for $LD option to reload object files... " >&6; }
+if ${lt_cv_ld_reload_flag+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_reload_flag='-r'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
+$as_echo "$lt_cv_ld_reload_flag" >&6; }
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+  darwin*)
+    if test "$GCC" = yes; then
+      reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+    else
+      reload_cmds='$LD$reload_flag -o $output$reload_objs'
+    fi
+    ;;
+esac
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OBJDUMP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+  ac_ct_OBJDUMP=$OBJDUMP
+  # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OBJDUMP"; then
+  ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_OBJDUMP="objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OBJDUMP" = x; then
+    OBJDUMP="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OBJDUMP=$ac_ct_OBJDUMP
+  fi
+else
+  OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
+$as_echo_n "checking how to recognize dependent libraries... " >&6; }
+if ${lt_cv_deplibs_check_method+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[4-9]*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+beos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+bsdi[45]*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
+  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_test_file=/shlib/libc.so
+  ;;
+
+cygwin*)
+  # func_win32_libid is a shell function defined in ltmain.sh
+  lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+  lt_cv_file_magic_cmd='func_win32_libid'
+  ;;
+
+mingw* | pw32*)
+  # Base MSYS/MinGW do not provide the 'file' command needed by
+  # func_win32_libid shell function, so use a weaker test based on 'objdump',
+  # unless we find 'file', for example because we are cross-compiling.
+  # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
+  if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]'
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[3-9]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
+$as_echo "$lt_cv_deplibs_check_method" >&6; }
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AR="${ac_tool_prefix}ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_AR"; then
+  ac_ct_AR=$AR
+  # Extract the first word of "ar", so it can be a program name with args.
+set dummy ar; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_AR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_AR="ar"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_AR" = x; then
+    AR="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+else
+  AR="$ac_cv_prog_AR"
+fi
+
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+test -z "$STRIP" && STRIP=:
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+test -z "$RANLIB" && RANLIB=:
+
+
+
+
+
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
+$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
+if ${lt_cv_sys_global_symbol_pipe+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[BCDEGRST]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[BCDT]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[ABCDGISTW]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[ABCDEGRST]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[BCDEGRST]'
+  ;;
+osf*)
+  symcode='[BCDEGQRST]'
+  ;;
+solaris*)
+  symcode='[BDRT]'
+  ;;
+sco3.2v5*)
+  symcode='[DT]'
+  ;;
+sysv4.2uw2*)
+  symcode='[DT]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[ABDT]'
+  ;;
+sysv4)
+  symcode='[DFNSTU]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[ABCDGIRSTW]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK '"\
+"     {last_section=section; section=\$ 3};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[	 ]\($symcode$symcode*\)[	 ][	 ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5
+  (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+const struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_save_LIBS="$LIBS"
+	  lt_save_CFLAGS="$CFLAGS"
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS="$lt_save_LIBS"
+	  CFLAGS="$lt_save_CFLAGS"
+	else
+	  echo "cannot find nm_test_func in $nlist" >&5
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&5
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
+    fi
+  else
+    echo "$progname: failed program was:" >&5
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+
+fi
+
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
+$as_echo "failed" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
+$as_echo "ok" >&6; }
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --enable-libtool-lock was given.
+if test "${enable_libtool_lock+set}" = set; then :
+  enableval=$enable_libtool_lock;
+fi
+
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '#line '$LINENO' "configure"' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    case `/usr/bin/file conftest.o` in
+	      *x86-64*)
+		LD="${LD-ld} -m elf32_x86_64"
+		;;
+	      *)
+		LD="${LD-ld} -m elf_i386"
+		;;
+	    esac
+	    ;;
+	  powerpc64le-*linux*)
+	    LD="${LD-ld} -m elf32lppclinux"
+	    ;;
+	  powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  powerpcle-*linux*)
+	    LD="${LD-ld} -m elf64lppc"
+	    ;;
+	  powerpc-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
+$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
+if ${lt_cv_cc_needs_belf+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_cc_needs_belf=yes
+else
+  lt_cv_cc_needs_belf=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+     ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
+$as_echo "$lt_cv_cc_needs_belf" >&6; }
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+sparc*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*) LD="${LD-ld} -m elf64_sparc" ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+
+
+  case $host_os in
+    rhapsody* | darwin*)
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DSYMUTIL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DSYMUTIL"; then
+  ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DSYMUTIL"; then
+  ac_ct_DSYMUTIL=$DSYMUTIL
+  # Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DSYMUTIL"; then
+  ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
+if test -n "$ac_ct_DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
+$as_echo "$ac_ct_DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_DSYMUTIL" = x; then
+    DSYMUTIL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DSYMUTIL=$ac_ct_DSYMUTIL
+  fi
+else
+  DSYMUTIL="$ac_cv_prog_DSYMUTIL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_NMEDIT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NMEDIT"; then
+  ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+NMEDIT=$ac_cv_prog_NMEDIT
+if test -n "$NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
+$as_echo "$NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NMEDIT"; then
+  ac_ct_NMEDIT=$NMEDIT
+  # Extract the first word of "nmedit", so it can be a program name with args.
+set dummy nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_NMEDIT"; then
+  ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_NMEDIT="nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
+if test -n "$ac_ct_NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
+$as_echo "$ac_ct_NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_NMEDIT" = x; then
+    NMEDIT=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    NMEDIT=$ac_ct_NMEDIT
+  fi
+else
+  NMEDIT="$ac_cv_prog_NMEDIT"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_LIPO+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$LIPO"; then
+  ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+LIPO=$ac_cv_prog_LIPO
+if test -n "$LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
+$as_echo "$LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_LIPO"; then
+  ac_ct_LIPO=$LIPO
+  # Extract the first word of "lipo", so it can be a program name with args.
+set dummy lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_LIPO+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_LIPO"; then
+  ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_LIPO="lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
+if test -n "$ac_ct_LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
+$as_echo "$ac_ct_LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_LIPO" = x; then
+    LIPO=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    LIPO=$ac_ct_LIPO
+  fi
+else
+  LIPO="$ac_cv_prog_LIPO"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL"; then
+  ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL=$ac_cv_prog_OTOOL
+if test -n "$OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
+$as_echo "$OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL"; then
+  ac_ct_OTOOL=$OTOOL
+  # Extract the first word of "otool", so it can be a program name with args.
+set dummy otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL"; then
+  ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_OTOOL="otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
+if test -n "$ac_ct_OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
+$as_echo "$ac_ct_OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL" = x; then
+    OTOOL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL=$ac_ct_OTOOL
+  fi
+else
+  OTOOL="$ac_cv_prog_OTOOL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OTOOL64+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL64"; then
+  ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL64=$ac_cv_prog_OTOOL64
+if test -n "$OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
+$as_echo "$OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL64"; then
+  ac_ct_OTOOL64=$OTOOL64
+  # Extract the first word of "otool64", so it can be a program name with args.
+set dummy otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL64"; then
+  ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_OTOOL64="otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
+if test -n "$ac_ct_OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
+$as_echo "$ac_ct_OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL64" = x; then
+    OTOOL64=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL64=$ac_ct_OTOOL64
+  fi
+else
+  OTOOL64="$ac_cv_prog_OTOOL64"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
+$as_echo_n "checking for -single_module linker flag... " >&6; }
+if ${lt_cv_apple_cc_single_mod+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&5
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&5
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
+$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
+$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
+if ${lt_cv_ld_exported_symbols_list+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_ld_exported_symbols_list=yes
+else
+  lt_cv_ld_exported_symbols_list=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
+$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5
+$as_echo_n "checking for -force_load linker flag... " >&6; }
+if ${lt_cv_ld_force_load+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
+      echo "$AR cru libconftest.a conftest.o" >&5
+      $AR cru libconftest.a conftest.o 2>&5
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&5
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5
+$as_echo "$lt_cv_ld_force_load" >&6; }
+    # Allow for Darwin 4-7 (macOS 10.0-10.3) although these are not expect to
+    # build without first building modern cctools / linker.
+    case $host_cpu-$host_os in
+    *-rhapsody* | *-darwin1.[012])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    *-darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    *-darwin*)
+      # darwin 5.x (macOS 10.1) onwards we only need to adjust when the
+      # deployment target is forced to an earlier version.
+      case ${MACOSX_DEPLOYMENT_TARGET-UNSET},$host in
+	UNSET,*-darwin[89]*|UNSET,*-darwin[12][0123456789]*)
+	  ;;
+	10.[012][,.]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress'
+	  ;;
+	*)
+	  ;;
+     esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+
+for ac_header in dlfcn.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+# Set options
+
+
+
+        enable_dlopen=no
+
+
+  enable_win32_dll=no
+
+
+
+  # Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+  enableval=$enable_static; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_static=yes
+fi
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-pic was given.
+if test "${with_pic+set}" = set; then :
+  withval=$with_pic; pic_mode="$withval"
+else
+  pic_mode=default
+fi
+
+
+test -z "$pic_mode" && pic_mode=default
+
+
+
+
+
+
+
+  # Check whether --enable-fast-install was given.
+if test "${enable_fast_install+set}" = set; then :
+  enableval=$enable_fast_install; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_fast_install=yes
+fi
+
+
+
+
+
+
+
+
+
+
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+test -z "$LN_S" && LN_S="ln -s"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
+$as_echo_n "checking for objdir... " >&6; }
+if ${lt_cv_objdir+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
+$as_echo "$lt_cv_objdir" >&6; }
+objdir=$lt_cv_objdir
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define LT_OBJDIR "$lt_cv_objdir/"
+_ACEOF
+
+
+
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+for cc_temp in $compiler""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
+$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/${ac_tool_prefix}file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+
+
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
+$as_echo_n "checking for file... " >&6; }
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  else
+    MAGIC_CMD=:
+  fi
+fi
+
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+
+lt_save_CC="$CC"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+objext=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+
+lt_prog_compiler_no_builtin_flag=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;;
+  *)
+    lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;;
+  esac
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
+$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
+if ${lt_cv_prog_compiler_rtti_exceptions+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_rtti_exceptions=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="-fno-rtti -fno-exceptions"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_rtti_exceptions=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
+$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
+
+if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
+    lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
+else
+    :
+fi
+
+fi
+
+
+
+
+
+
+  lt_prog_compiler_wl=
+lt_prog_compiler_pic=
+lt_prog_compiler_static=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+
+  if test "$GCC" = yes; then
+    lt_prog_compiler_wl='-Wl,'
+    lt_prog_compiler_static='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      lt_prog_compiler_pic='-fPIC'
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            lt_prog_compiler_pic='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      lt_prog_compiler_pic='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      lt_prog_compiler_static=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[3-9]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      lt_prog_compiler_can_build_shared=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	lt_prog_compiler_pic=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      lt_prog_compiler_pic='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      lt_prog_compiler_wl='-Xlinker '
+      lt_prog_compiler_pic='-Xcompiler -fPIC'
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      lt_prog_compiler_wl='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      else
+	lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      lt_prog_compiler_static='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC (with -KPIC) is the default.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-KPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='--shared'
+	lt_prog_compiler_static='--static'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fpic'
+	lt_prog_compiler_static='-Bstatic'
+        ;;
+      ccc*)
+        lt_prog_compiler_wl='-Wl,'
+        # All Alpha code is PIC.
+        lt_prog_compiler_static='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-qpic'
+	lt_prog_compiler_static='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ F* | *Sun*Fortran*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl=''
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl='-Wl,'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      lt_prog_compiler_wl='-Wl,'
+      # All OSF/1 code is PIC.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    rdos*)
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    solaris*)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95*)
+	lt_prog_compiler_wl='-Qoption ld ';;
+      *)
+	lt_prog_compiler_wl='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      lt_prog_compiler_wl='-Qoption ld '
+      lt_prog_compiler_pic='-PIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	lt_prog_compiler_pic='-Kconform_pic'
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    unicos*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_can_build_shared=no
+      ;;
+
+    uts4*)
+      lt_prog_compiler_pic='-pic'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *)
+      lt_prog_compiler_can_build_shared=no
+      ;;
+    esac
+  fi
+
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    lt_prog_compiler_pic=
+    ;;
+  *)
+    lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
+    ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_prog_compiler_pic" >&5
+$as_echo "$lt_prog_compiler_pic" >&6; }
+
+
+
+
+
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$lt_prog_compiler_pic"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
+$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
+if ${lt_cv_prog_compiler_pic_works+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_pic_works=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_pic_works=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
+$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
+    case $lt_prog_compiler_pic in
+     "" | " "*) ;;
+     *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
+     esac
+else
+    lt_prog_compiler_pic=
+     lt_prog_compiler_can_build_shared=no
+fi
+
+fi
+
+
+
+
+
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
+$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
+if ${lt_cv_prog_compiler_static_works+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_static_works=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler_static_works=yes
+       fi
+     else
+       lt_cv_prog_compiler_static_works=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
+$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_static_works" = xyes; then
+    :
+else
+    lt_prog_compiler_static=
+fi
+
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if ${lt_cv_prog_compiler_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if ${lt_cv_prog_compiler_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+hard_links="nottested"
+if test "$lt_cv_prog_compiler_c_o" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5
+$as_echo_n "checking if we can lock with hard links... " >&6; }
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5
+$as_echo "$hard_links" >&6; }
+  if test "$hard_links" = no; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&5
+$as_echo "$as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2;}
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5
+$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; }
+
+  runpath_var=
+  allow_undefined_flag=
+  always_export_symbols=no
+  archive_cmds=
+  archive_expsym_cmds=
+  compiler_needs_object=no
+  enable_shared_with_static_runtimes=no
+  export_dynamic_flag_spec=
+  export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  hardcode_automatic=no
+  hardcode_direct=no
+  hardcode_direct_absolute=no
+  hardcode_libdir_flag_spec=
+  hardcode_libdir_flag_spec_ld=
+  hardcode_libdir_separator=
+  hardcode_minus_L=no
+  hardcode_shlibpath_var=unsupported
+  inherit_rpath=no
+  link_all_deplibs=unknown
+  module_cmds=
+  module_expsym_cmds=
+  old_archive_from_new_cmds=
+  old_archive_from_expsyms_cmds=
+  thread_safe_flag_spec=
+  whole_archive_flag_spec=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  include_expsyms=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  esac
+
+  ld_shlibs=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[2-9]*) ;;
+	  *\ \(GNU\ Binutils\)\ [3-9]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+    export_dynamic_flag_spec='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      whole_archive_flag_spec=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	allow_undefined_flag=unsupported
+	# Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+      # as there is no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      export_dynamic_flag_spec='${wl}--export-all-symbols'
+      allow_undefined_flag=unsupported
+      always_export_symbols=no
+      enable_shared_with_static_runtimes=yes
+      export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    haiku*)
+      archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      link_all_deplibs=yes
+      ;;
+
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      export_dynamic_flag_spec='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=' $pic_flag'
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  whole_archive_flag_spec=
+	  tmp_sharedflag='--shared' ;;
+	xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
+	  hardcode_libdir_flag_spec=
+	  hardcode_libdir_flag_spec_ld='-rpath $libdir'
+	  archive_cmds='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        ld_shlibs=no
+      fi
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+	    archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    ld_shlibs=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+    esac
+
+    if test "$ld_shlibs" = no; then
+      runpath_var=
+      hardcode_libdir_flag_spec=
+      export_dynamic_flag_spec=
+      whole_archive_flag_spec=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      allow_undefined_flag=unsupported
+      always_export_symbols=yes
+      archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	hardcode_direct=unsupported
+      fi
+      ;;
+
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      archive_cmds=''
+      hardcode_direct=yes
+      hardcode_direct_absolute=yes
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      file_list_spec='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[012]|aix4.[012].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  hardcode_direct=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  hardcode_minus_L=yes
+	  hardcode_libdir_flag_spec='-L$libdir'
+	  hardcode_libdir_separator=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      export_dynamic_flag_spec='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      always_export_symbols=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	allow_undefined_flag='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+	  allow_undefined_flag="-z nodefs"
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+
+	 hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  no_undefined_flag=' ${wl}-bernotok'
+	  allow_undefined_flag=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    whole_archive_flag_spec='$convenience'
+	  fi
+	  archive_cmds_need_lc=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[45]*)
+      export_dynamic_flag_spec=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      allow_undefined_flag=unsupported
+      # Tell ltmain to make .lib files, not .a files.
+      libext=lib
+      # Tell ltmain to make .dll files, not .so files.
+      shrext_cmds=".dll"
+      # FIXME: Setting linknames here is a bad hack.
+      archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+      # The linker will automatically build a .lib file if we build a DLL.
+      old_archive_from_new_cmds='true'
+      # FIXME: Should let the user specify the lib program.
+      old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+      fix_srcfile_path='`cygpath -w "$srcfile"`'
+      enable_shared_with_static_runtimes=yes
+      ;;
+
+    darwin* | rhapsody*)
+
+
+  archive_cmds_need_lc=no
+  hardcode_direct=no
+  hardcode_automatic=yes
+  hardcode_shlibpath_var=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    whole_archive_flag_spec='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+  else
+    whole_archive_flag_spec=''
+  fi
+  link_all_deplibs=yes
+  allow_undefined_flag="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+
+  else
+  ld_shlibs=no
+  fi
+
+      ;;
+
+    dgux*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      archive_cmds='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	archive_cmds='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      export_dynamic_flag_spec='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_flag_spec_ld='+b $libdir'
+	hardcode_libdir_separator=:
+	hardcode_direct=yes
+	hardcode_direct_absolute=yes
+	export_dynamic_flag_spec='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	hardcode_minus_L=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -shared ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  archive_cmds='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5
+$as_echo_n "checking if $CC understands -b... " >&6; }
+if ${lt_cv_prog_compiler__b+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler__b=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS -b"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler__b=yes
+       fi
+     else
+       lt_cv_prog_compiler__b=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5
+$as_echo "$lt_cv_prog_compiler__b" >&6; }
+
+if test x"$lt_cv_prog_compiler__b" = xyes; then
+    archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+else
+    archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+fi
+
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_separator=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  hardcode_direct=no
+	  hardcode_shlibpath_var=no
+	  ;;
+	*)
+	  hardcode_direct=yes
+	  hardcode_direct_absolute=yes
+	  export_dynamic_flag_spec='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  hardcode_minus_L=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+        save_LDFLAGS="$LDFLAGS"
+        LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo(void) {}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+        LDFLAGS="$save_LDFLAGS"
+      else
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      inherit_rpath=yes
+      link_all_deplibs=yes
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    newsos6)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_shlibpath_var=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	hardcode_direct=yes
+	hardcode_shlibpath_var=no
+	hardcode_direct_absolute=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	  export_dynamic_flag_spec='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+	     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     hardcode_libdir_flag_spec='-R$libdir'
+	     ;;
+	   *)
+	     archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      allow_undefined_flag=unsupported
+      archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_separator=:
+      ;;
+
+    solaris*)
+      no_undefined_flag=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	archive_cmds='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_shlibpath_var=no
+      case $host_os in
+      solaris2.[0-5] | solaris2.[0-5].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      link_all_deplibs=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  reload_cmds='$CC -r -o $output$reload_objs'
+	  hardcode_direct=no
+        ;;
+	motorola)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4.3*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_shlibpath_var=no
+      export_dynamic_flag_spec='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	hardcode_shlibpath_var=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	ld_shlibs=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      no_undefined_flag='${wl}-z,text'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      no_undefined_flag='${wl}-z,text'
+      allow_undefined_flag='${wl}-z,nodefs'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-R,$libdir'
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      export_dynamic_flag_spec='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      ld_shlibs=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	export_dynamic_flag_spec='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
+$as_echo "$ld_shlibs" >&6; }
+test "$ld_shlibs" = no && can_build_shared=no
+
+with_gnu_ld=$with_gnu_ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$archive_cmds_need_lc" in
+x|xyes)
+  # Assume -lc should be added
+  archive_cmds_need_lc=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $archive_cmds in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
+$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
+if ${lt_cv_archive_cmds_need_lc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  $RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$lt_prog_compiler_wl
+	  pic_flag=$lt_prog_compiler_pic
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$allow_undefined_flag
+	  allow_undefined_flag=
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
+  (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+	  then
+	    lt_cv_archive_cmds_need_lc=no
+	  else
+	    lt_cv_archive_cmds_need_lc=yes
+	  fi
+	  allow_undefined_flag=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_archive_cmds_need_lc" >&5
+$as_echo "$lt_cv_archive_cmds_need_lc" >&6; }
+      archive_cmds_need_lc=$lt_cv_archive_cmds_need_lc
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+
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+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
+$as_echo_n "checking dynamic linker characteristics... " >&6; }
+
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([A-Za-z]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[lt_foo]++; }
+  if (lt_freq[lt_foo] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([A-Za-z]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[4-9]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[01] | aix4.[01].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+      # instead of lib<name>.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[45]*)
+  version_type=linux
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$host_os in
+  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    ;;
+
+  *)
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    ;;
+  esac
+  dynamic_linker='Win32 ld.exe'
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[23].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[01]* | freebsdelf3.[01]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
+  freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+haiku*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/beos/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[3-9]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be Linux ELF.
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu* | uclinuxfdpiceabi)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  if ${lt_cv_shlibpath_overrides_runpath+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
+	 LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if  ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
+  lt_cv_shlibpath_overrides_runpath=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+
+fi
+
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[89] | openbsd2.[89].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
+$as_echo "$dynamic_linker" >&6; }
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
+$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
+hardcode_action=
+if test -n "$hardcode_libdir_flag_spec" ||
+   test -n "$runpath_var" ||
+   test "X$hardcode_automatic" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$hardcode_direct" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
+     test "$hardcode_minus_L" != no; then
+    # Linking always hardcodes the temporary library directory.
+    hardcode_action=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    hardcode_action=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  hardcode_action=unsupported
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
+$as_echo "$hardcode_action" >&6; }
+
+if test "$hardcode_action" = relink ||
+   test "$inherit_rpath" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+
+
+
+
+
+
+  if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if ${ac_cv_lib_dl_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+
+fi
+
+    ;;
+
+  *)
+    ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
+if test "x$ac_cv_func_shl_load" = xyes; then :
+  lt_cv_dlopen="shl_load"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+$as_echo_n "checking for shl_load in -ldld... " >&6; }
+if ${ac_cv_lib_dld_shl_load+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char shl_load ();
+int
+main ()
+{
+return shl_load ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_shl_load=yes
+else
+  ac_cv_lib_dld_shl_load=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = xyes; then :
+  lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
+else
+  ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if ${ac_cv_lib_dl_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
+$as_echo_n "checking for dlopen in -lsvld... " >&6; }
+if ${ac_cv_lib_svld_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsvld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_svld_dlopen=yes
+else
+  ac_cv_lib_svld_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
+$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
+if test "x$ac_cv_lib_svld_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
+$as_echo_n "checking for dld_link in -ldld... " >&6; }
+if ${ac_cv_lib_dld_dld_link+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dld_link ();
+int
+main ()
+{
+return dld_link ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_dld_link=yes
+else
+  ac_cv_lib_dld_dld_link=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
+$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
+if test "x$ac_cv_lib_dld_dld_link" = xyes; then :
+  lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
+$as_echo_n "checking whether a program can dlopen itself... " >&6; }
+if ${lt_cv_dlopen_self+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line 11275 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
+$as_echo "$lt_cv_dlopen_self" >&6; }
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
+$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
+if ${lt_cv_dlopen_self_static+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self_static=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line 11381 "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self_static=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
+$as_echo "$lt_cv_dlopen_self_static" >&6; }
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+striplib=
+old_striplib=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
+$as_echo_n "checking whether stripping libraries is possible... " >&6; }
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+    else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    fi
+    ;;
+  *)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+  # Report which library types will actually be built
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5
+$as_echo_n "checking if libtool supports shared libraries... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5
+$as_echo "$can_build_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5
+$as_echo_n "checking whether to build shared libraries... " >&6; }
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[4-9]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+$as_echo "$enable_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5
+$as_echo_n "checking whether to build static libraries... " >&6; }
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5
+$as_echo "$enable_static" >&6; }
+
+
+
+
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+CC="$lt_save_CC"
+
+
+
+
+
+
+
+
+
+
+
+
+
+        ac_config_commands="$ac_config_commands libtool"
+
+
+
+
+# Only expand once:
+
+
+
+
+# Check whether --enable-largefile was given.
+if test "${enable_largefile+set}" = set; then :
+  enableval=$enable_largefile;
+fi
+
+if test "$enable_largefile" != no; then
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for special C compiler options needed for large files" >&5
+$as_echo_n "checking for special C compiler options needed for large files... " >&6; }
+if ${ac_cv_sys_largefile_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_sys_largefile_CC=no
+     if test "$GCC" != yes; then
+       ac_save_CC=$CC
+       while :; do
+	 # IRIX 6.2 and later do not support large files by default,
+	 # so use the C compiler's -n32 option if that helps.
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+	 if ac_fn_c_try_compile "$LINENO"; then :
+  break
+fi
+rm -f core conftest.err conftest.$ac_objext
+	 CC="$CC -n32"
+	 if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_largefile_CC=' -n32'; break
+fi
+rm -f core conftest.err conftest.$ac_objext
+	 break
+       done
+       CC=$ac_save_CC
+       rm -f conftest.$ac_ext
+    fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_largefile_CC" >&5
+$as_echo "$ac_cv_sys_largefile_CC" >&6; }
+  if test "$ac_cv_sys_largefile_CC" != no; then
+    CC=$CC$ac_cv_sys_largefile_CC
+  fi
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _FILE_OFFSET_BITS value needed for large files" >&5
+$as_echo_n "checking for _FILE_OFFSET_BITS value needed for large files... " >&6; }
+if ${ac_cv_sys_file_offset_bits+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_file_offset_bits=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#define _FILE_OFFSET_BITS 64
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_file_offset_bits=64; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  ac_cv_sys_file_offset_bits=unknown
+  break
+done
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_file_offset_bits" >&5
+$as_echo "$ac_cv_sys_file_offset_bits" >&6; }
+case $ac_cv_sys_file_offset_bits in #(
+  no | unknown) ;;
+  *)
+cat >>confdefs.h <<_ACEOF
+#define _FILE_OFFSET_BITS $ac_cv_sys_file_offset_bits
+_ACEOF
+;;
+esac
+rm -rf conftest*
+  if test $ac_cv_sys_file_offset_bits = unknown; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _LARGE_FILES value needed for large files" >&5
+$as_echo_n "checking for _LARGE_FILES value needed for large files... " >&6; }
+if ${ac_cv_sys_large_files+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  while :; do
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_large_files=no; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#define _LARGE_FILES 1
+#include <sys/types.h>
+ /* Check that off_t can represent 2**63 - 1 correctly.
+    We can't simply define LARGE_OFF_T to be 9223372036854775807,
+    since some C++ compilers masquerading as C compilers
+    incorrectly reject 9223372036854775807.  */
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
+  int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
+		       && LARGE_OFF_T % 2147483647 == 1)
+		      ? 1 : -1];
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_sys_large_files=1; break
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  ac_cv_sys_large_files=unknown
+  break
+done
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sys_large_files" >&5
+$as_echo "$ac_cv_sys_large_files" >&6; }
+case $ac_cv_sys_large_files in #(
+  no | unknown) ;;
+  *)
+cat >>confdefs.h <<_ACEOF
+#define _LARGE_FILES $ac_cv_sys_large_files
+_ACEOF
+;;
+esac
+rm -rf conftest*
+  fi
+
+
+fi
+
+
+backtrace_supported=yes
+
+if test -n "${with_target_subdir}"; then
+  # We are compiling a GCC library.  We can assume that the unwind
+  # library exists.
+  BACKTRACE_FILE="backtrace.lo simple.lo"
+else
+  ac_fn_c_check_header_mongrel "$LINENO" "unwind.h" "ac_cv_header_unwind_h" "$ac_includes_default"
+if test "x$ac_cv_header_unwind_h" = xyes; then :
+  ac_fn_c_check_func "$LINENO" "_Unwind_Backtrace" "ac_cv_func__Unwind_Backtrace"
+if test "x$ac_cv_func__Unwind_Backtrace" = xyes; then :
+  BACKTRACE_FILE="backtrace.lo simple.lo"
+else
+  BACKTRACE_FILE="nounwind.lo"
+                    backtrace_supported=no
+fi
+
+else
+  BACKTRACE_FILE="nounwind.lo"
+     backtrace_supported=no
+fi
+
+
+fi
+
+
+EXTRA_FLAGS=
+if test -n "${with_target_subdir}"; then
+  EXTRA_FLAGS="-funwind-tables -frandom-seed=\$@"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -funwind-tables option" >&5
+$as_echo_n "checking for -funwind-tables option... " >&6; }
+if ${libbacktrace_cv_c_unwind_tables+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS_hold="$CFLAGS"
+     CFLAGS="$CFLAGS -funwind-tables"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+static int f() { return 0; }
+int
+main ()
+{
+return f();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libbacktrace_cv_c_unwind_tables=yes
+else
+  libbacktrace_cv_c_unwind_tables=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+     CFLAGS="$CFLAGS_hold"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_c_unwind_tables" >&5
+$as_echo "$libbacktrace_cv_c_unwind_tables" >&6; }
+  if test "$libbacktrace_cv_c_unwind_tables" = "yes"; then
+    EXTRA_FLAGS=-funwind-tables
+  fi
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -frandom-seed=string option" >&5
+$as_echo_n "checking for -frandom-seed=string option... " >&6; }
+if ${libbacktrace_cv_c_random_seed_string+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS_hold="$CFLAGS"
+     CFLAGS="$CFLAGS -frandom-seed=conftest.lo"
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libbacktrace_cv_c_random_seed_string=yes
+else
+  libbacktrace_cv_c_random_seed_string=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+     CFLAGS="$CFLAGS_hold"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_c_random_seed_string" >&5
+$as_echo "$libbacktrace_cv_c_random_seed_string" >&6; }
+  if test "$libbacktrace_cv_c_random_seed_string" = "yes"; then
+    EXTRA_FLAGS="$EXTRA_FLAGS -frandom-seed=\$@"
+  fi
+fi
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+WARN_FLAGS=
+save_CFLAGS="$CFLAGS"
+for real_option in -W -Wall -Wwrite-strings -Wstrict-prototypes \
+			  -Wmissing-prototypes -Wold-style-definition \
+			  -Wmissing-format-attribute -Wcast-qual; do
+  # Do the check with the no- prefix removed since gcc silently
+  # accepts any -Wno-* option on purpose
+  case $real_option in
+    -Wno-*) option=-W`expr x$real_option : 'x-Wno-\(.*\)'` ;;
+    *) option=$real_option ;;
+  esac
+  as_acx_Woption=`$as_echo "acx_cv_prog_cc_warning_$option" | $as_tr_sh`
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC supports $option" >&5
+$as_echo_n "checking whether $CC supports $option... " >&6; }
+if eval \${$as_acx_Woption+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS="$option"
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$as_acx_Woption=yes"
+else
+  eval "$as_acx_Woption=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+eval ac_res=\$$as_acx_Woption
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  if test `eval 'as_val=${'$as_acx_Woption'};$as_echo "$as_val"'` = yes; then :
+  WARN_FLAGS="$WARN_FLAGS${WARN_FLAGS:+ }$real_option"
+fi
+  done
+CFLAGS="$save_CFLAGS"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+# Check whether --enable-werror was given.
+if test "${enable_werror+set}" = set; then :
+  enableval=$enable_werror;
+fi
+
+if test "x$enable_werror" != "xno" && test -n "${with_target_subdir}"; then :
+  WARN_FLAGS="$WARN_FLAGS -Werror"
+fi
+
+
+
+if test -n "${with_target_subdir}"; then
+
+
+# Check whether --with-system-libunwind was given.
+if test "${with_system_libunwind+set}" = set; then :
+  withval=$with_system_libunwind;
+fi
+
+  # If system-libunwind was not specifically set, pick a default setting.
+  if test x$with_system_libunwind = x; then
+    case ${target} in
+      ia64-*-hpux*) with_system_libunwind=yes ;;
+      *) with_system_libunwind=no ;;
+    esac
+  fi
+  # Based on system-libunwind and target, do we have ipinfo?
+  if  test x$with_system_libunwind = xyes; then
+    case ${target} in
+      ia64-*-*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+  else
+    # Darwin before version 9 does not have _Unwind_GetIPInfo.
+
+    case ${target} in
+      *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+
+  fi
+
+  if test x$have_unwind_getipinfo = xyes; then
+
+$as_echo "#define HAVE_GETIPINFO 1" >>confdefs.h
+
+  fi
+
+else
+  ac_save_CFFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for _Unwind_GetIPInfo" >&5
+$as_echo_n "checking for _Unwind_GetIPInfo... " >&6; }
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include "unwind.h"
+	struct _Unwind_Context *context;
+	int ip_before_insn = 0;
+int
+main ()
+{
+return _Unwind_GetIPInfo (context, &ip_before_insn);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  have_unwind_getipinfo=yes
+else
+  have_unwind_getipinfo=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  CFLAGS="$ac_save_CFLAGS"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_unwind_getipinfo" >&5
+$as_echo "$have_unwind_getipinfo" >&6; }
+  if test "$have_unwind_getipinfo" = "yes"; then
+
+$as_echo "#define HAVE_GETIPINFO 1" >>confdefs.h
+
+  fi
+fi
+
+# Enable --enable-host-shared.
+# Check whether --enable-host-shared was given.
+if test "${enable_host_shared+set}" = set; then :
+  enableval=$enable_host_shared; PIC_FLAG=-fPIC
+else
+  PIC_FLAG=
+fi
+
+
+
+# Test for __sync support.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __sync extensions" >&5
+$as_echo_n "checking __sync extensions... " >&6; }
+if ${libbacktrace_cv_sys_sync+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
+   *) libbacktrace_cv_sys_sync=yes ;;
+   esac
+ else
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int i;
+int
+main ()
+{
+__sync_bool_compare_and_swap (&i, i, i);
+                       __sync_lock_test_and_set (&i, 1);
+                       __sync_lock_release (&i);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  libbacktrace_cv_sys_sync=yes
+else
+  libbacktrace_cv_sys_sync=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_sync" >&5
+$as_echo "$libbacktrace_cv_sys_sync" >&6; }
+BACKTRACE_SUPPORTS_THREADS=0
+if test "$libbacktrace_cv_sys_sync" = "yes"; then
+  BACKTRACE_SUPPORTS_THREADS=1
+
+$as_echo "#define HAVE_SYNC_FUNCTIONS 1" >>confdefs.h
+
+fi
+
+
+# Test for __atomic support.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking __atomic extensions" >&5
+$as_echo_n "checking __atomic extensions... " >&6; }
+if ${libbacktrace_cv_sys_atomic+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "${with_target_subdir}"; then
+   libbacktrace_cv_sys_atomic=yes
+ else
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int i;
+int
+main ()
+{
+__atomic_load_n (&i, __ATOMIC_ACQUIRE);
+		       __atomic_store_n (&i, 1, __ATOMIC_RELEASE);
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  libbacktrace_cv_sys_atomic=yes
+else
+  libbacktrace_cv_sys_atomic=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+ fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_atomic" >&5
+$as_echo "$libbacktrace_cv_sys_atomic" >&6; }
+if test "$libbacktrace_cv_sys_atomic" = "yes"; then
+
+$as_echo "#define HAVE_ATOMIC_FUNCTIONS 1" >>confdefs.h
+
+fi
+
+# The library needs to be able to read the executable itself.  Compile
+# a file to determine the executable format.  The awk script
+# filetype.awk prints out the file type.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking output filetype" >&5
+$as_echo_n "checking output filetype... " >&6; }
+if ${libbacktrace_cv_sys_filetype+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  filetype=
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int i;
+int
+main ()
+{
+int j;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  filetype=`${AWK} -f $srcdir/filetype.awk conftest.$ac_objext`
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "compiler failed
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+libbacktrace_cv_sys_filetype=$filetype
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_filetype" >&5
+$as_echo "$libbacktrace_cv_sys_filetype" >&6; }
+
+# Match the file type to decide what files to compile.
+FORMAT_FILE=
+backtrace_supports_data=yes
+case "$libbacktrace_cv_sys_filetype" in
+elf*) FORMAT_FILE="elf.lo" ;;
+macho) FORMAT_FILE="macho.lo" ;;
+pecoff) FORMAT_FILE="pecoff.lo"
+        backtrace_supports_data=no
+	;;
+xcoff*) FORMAT_FILE="xcoff.lo"
+        backtrace_supports_data=no
+        ;;
+*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: could not determine output file type" >&5
+$as_echo "$as_me: WARNING: could not determine output file type" >&2;}
+   FORMAT_FILE="unknown.lo"
+   backtrace_supported=no
+   ;;
+esac
+
+
+# ELF defines.
+elfsize=
+case "$libbacktrace_cv_sys_filetype" in
+elf32) elfsize=32 ;;
+elf64) elfsize=64 ;;
+*)     elfsize=unused
+esac
+
+cat >>confdefs.h <<_ACEOF
+#define BACKTRACE_ELF_SIZE $elfsize
+_ACEOF
+
+ if test "$FORMAT_FILE" = "elf.lo"; then
+  HAVE_ELF_TRUE=
+  HAVE_ELF_FALSE='#'
+else
+  HAVE_ELF_TRUE='#'
+  HAVE_ELF_FALSE=
+fi
+
+
+# XCOFF defines.
+xcoffsize=
+case "$libbacktrace_cv_sys_filetype" in
+xcoff32) xcoffsize=32 ;;
+xcoff64) xcoffsize=64 ;;
+*)       xcoffsize=unused
+esac
+
+cat >>confdefs.h <<_ACEOF
+#define BACKTRACE_XCOFF_SIZE $xcoffsize
+_ACEOF
+
+
+BACKTRACE_SUPPORTED=0
+if test "$backtrace_supported" = "yes"; then
+  BACKTRACE_SUPPORTED=1
+fi
+
+
+BACKTRACE_SUPPORTS_DATA=0
+if test "$backtrace_supports_data" = "yes"; then
+  BACKTRACE_SUPPORTS_DATA=1
+fi
+
+
+for ac_header in sys/mman.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "sys/mman.h" "ac_cv_header_sys_mman_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_mman_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SYS_MMAN_H 1
+_ACEOF
+
+fi
+
+done
+
+if test "$ac_cv_header_sys_mman_h" = "no"; then
+  have_mmap=no
+else
+  if test -n "${with_target_subdir}"; then
+    # When built as a GCC target library, we can't do a link test.  We
+    # simply assume that if we have mman.h, we have mmap.
+    have_mmap=yes
+    case "${host}" in
+    spu-*-*|*-*-msdosdjgpp)
+        # The SPU does not have mmap, but it has a sys/mman.h header file
+        # containing "mmap_eaddr" and the mmap flags, confusing the test.
+        # DJGPP also has sys/man.h, but no mmap
+	have_mmap=no ;;
+    esac
+  else
+    ac_fn_c_check_func "$LINENO" "mmap" "ac_cv_func_mmap"
+if test "x$ac_cv_func_mmap" = xyes; then :
+  have_mmap=yes
+else
+  have_mmap=no
+fi
+
+  fi
+fi
+if test "$have_mmap" = "no"; then
+  VIEW_FILE=read.lo
+  ALLOC_FILE=alloc.lo
+else
+  VIEW_FILE=mmapio.lo
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/mman.h>
+#if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
+  #error no MAP_ANONYMOUS
+#endif
+
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ALLOC_FILE=mmap.lo
+else
+  ALLOC_FILE=alloc.lo
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+fi
+
+
+
+BACKTRACE_USES_MALLOC=0
+if test "$ALLOC_FILE" = "alloc.lo"; then
+  BACKTRACE_USES_MALLOC=1
+fi
+
+
+# Check for dl_iterate_phdr.
+for ac_header in link.h sys/link.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+if test "$ac_cv_header_link_h" = "no" -a "$ac_cv_header_sys_link_h" = "no"; then
+  have_dl_iterate_phdr=no
+else
+  if test -n "${with_target_subdir}"; then
+    link_h=link.h
+    if test "$ac_cv_header_link_h" = "no"; then
+       link_h=sys/link.h
+    fi
+    # When built as a GCC target library, we can't do a link test.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$link_h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "dl_iterate_phdr" >/dev/null 2>&1; then :
+  have_dl_iterate_phdr=yes
+else
+  have_dl_iterate_phdr=no
+fi
+rm -f conftest*
+
+    case "${host}" in
+    *-*-solaris2.10*)
+        # Avoid dl_iterate_phdr on Solaris 10, where it is in the
+    	# header file but is only in -ldl.
+	have_dl_iterate_phdr=no ;;
+    esac
+  else
+    ac_fn_c_check_func "$LINENO" "dl_iterate_phdr" "ac_cv_func_dl_iterate_phdr"
+if test "x$ac_cv_func_dl_iterate_phdr" = xyes; then :
+  have_dl_iterate_phdr=yes
+else
+  have_dl_iterate_phdr=no
+fi
+
+  fi
+fi
+if test "$have_dl_iterate_phdr" = "yes"; then
+
+$as_echo "#define HAVE_DL_ITERATE_PHDR 1" >>confdefs.h
+
+fi
+
+# Check for header file for Mach-O image functions.
+for ac_header in mach-o/dyld.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "mach-o/dyld.h" "ac_cv_header_mach_o_dyld_h" "$ac_includes_default"
+if test "x$ac_cv_header_mach_o_dyld_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_MACH_O_DYLD_H 1
+_ACEOF
+
+fi
+
+done
+
+
+# Check for loadquery.
+for ac_header in sys/ldr.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "sys/ldr.h" "ac_cv_header_sys_ldr_h" "$ac_includes_default"
+if test "x$ac_cv_header_sys_ldr_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SYS_LDR_H 1
+_ACEOF
+
+fi
+
+done
+
+if test "$ac_cv_header_sys_ldr_h" = "no"; then
+  have_loadquery=no
+else
+  if test -n "${with_target_subdir}"; then
+    # When built as a GCC target library, we can't do a link test.
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/ldr.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "loadquery" >/dev/null 2>&1; then :
+  have_loadquery=yes
+else
+  have_loadquery=no
+fi
+rm -f conftest*
+
+  else
+    ac_fn_c_check_func "$LINENO" "loadquery" "ac_cv_func_loadquery"
+if test "x$ac_cv_func_loadquery" = xyes; then :
+  have_loadquery=yes
+else
+  have_loadquery=no
+fi
+
+  fi
+fi
+if test "$have_loadquery" = "yes"; then
+
+$as_echo "#define HAVE_LOADQUERY 1" >>confdefs.h
+
+fi
+
+# Check for the fcntl function.
+if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   *-*-mingw*) have_fcntl=no ;;
+   spu-*-*) have_fcntl=no ;;
+   *) have_fcntl=yes ;;
+   esac
+else
+  ac_fn_c_check_func "$LINENO" "fcntl" "ac_cv_func_fcntl"
+if test "x$ac_cv_func_fcntl" = xyes; then :
+  have_fcntl=yes
+else
+  have_fcntl=no
+fi
+
+fi
+if test "$have_fcntl" = "yes"; then
+
+$as_echo "#define HAVE_FCNTL 1" >>confdefs.h
+
+fi
+
+ac_fn_c_check_decl "$LINENO" "strnlen" "ac_cv_have_decl_strnlen" "$ac_includes_default"
+if test "x$ac_cv_have_decl_strnlen" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_STRNLEN $ac_have_decl
+_ACEOF
+ac_fn_c_check_decl "$LINENO" "getpagesize" "ac_cv_have_decl_getpagesize" "$ac_includes_default"
+if test "x$ac_cv_have_decl_getpagesize" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_GETPAGESIZE $ac_have_decl
+_ACEOF
+
+for ac_func in lstat readlink
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+# Check for getexecname function.
+if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   *-*-solaris2*) have_getexecname=yes ;;
+   *) have_getexecname=no ;;
+   esac
+else
+  ac_fn_c_check_func "$LINENO" "getexecname" "ac_cv_func_getexecname"
+if test "x$ac_cv_func_getexecname" = xyes; then :
+  have_getexecname=yes
+else
+  have_getexecname=no
+fi
+
+fi
+if test "$have_getexecname" = "yes"; then
+
+$as_echo "#define HAVE_GETEXECNAME 1" >>confdefs.h
+
+fi
+
+# Check for sysctl definitions.
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for KERN_PROC" >&5
+$as_echo_n "checking for KERN_PROC... " >&6; }
+if ${libbacktrace_cv_proc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+int
+main ()
+{
+int mib0 = CTL_KERN; int mib1 = KERN_PROC; int mib2 = KERN_PROC_PATHNAME;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libbacktrace_cv_proc=yes
+else
+  libbacktrace_cv_proc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_proc" >&5
+$as_echo "$libbacktrace_cv_proc" >&6; }
+if test "$libbacktrace_cv_proc" = "yes"; then
+
+$as_echo "#define HAVE_KERN_PROC 1" >>confdefs.h
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for KERN_PROG_ARGS" >&5
+$as_echo_n "checking for KERN_PROG_ARGS... " >&6; }
+if ${libbacktrace_cv_procargs+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+int
+main ()
+{
+int mib0 = CTL_KERN; int mib1 = KERN_PROC_ARGS; int mib2 = KERN_PROC_PATHNAME;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libbacktrace_cv_procargs=yes
+else
+  libbacktrace_cv_procargs=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_procargs" >&5
+$as_echo "$libbacktrace_cv_procargs" >&6; }
+if test "$libbacktrace_cv_procargs" = "yes"; then
+
+$as_echo "#define HAVE_KERN_PROC_ARGS 1" >>confdefs.h
+
+fi
+
+# Check for the clock_gettime function.
+for ac_func in clock_gettime
+do :
+  ac_fn_c_check_func "$LINENO" "clock_gettime" "ac_cv_func_clock_gettime"
+if test "x$ac_cv_func_clock_gettime" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_CLOCK_GETTIME 1
+_ACEOF
+
+fi
+done
+
+clock_gettime_link=
+# At least for glibc, clock_gettime is in librt.  But don't
+# pull that in if it still doesn't give us the function we want.  This
+# test is copied from libgomp, and modified to not link in -lrt as
+# we're using this for test timing only.
+if test "$ac_cv_func_clock_gettime" = no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for clock_gettime in -lrt" >&5
+$as_echo_n "checking for clock_gettime in -lrt... " >&6; }
+if ${ac_cv_lib_rt_clock_gettime+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lrt  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char clock_gettime ();
+int
+main ()
+{
+return clock_gettime ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_rt_clock_gettime=yes
+else
+  ac_cv_lib_rt_clock_gettime=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
+$as_echo "$ac_cv_lib_rt_clock_gettime" >&6; }
+if test "x$ac_cv_lib_rt_clock_gettime" = xyes; then :
+  CLOCK_GETTIME_LINK=-lrt
+
+$as_echo "#define HAVE_CLOCK_GETTIME 1" >>confdefs.h
+
+fi
+
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -pthread is supported" >&5
+$as_echo_n "checking whether -pthread is supported... " >&6; }
+if ${libgo_cv_lib_pthread+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS_hold=$CFLAGS
+CFLAGS="$CFLAGS -pthread"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int i;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  libgo_cv_lib_pthread=yes
+else
+  libgo_cv_lib_pthread=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+CFLAGS=$CFLAGS_hold
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_lib_pthread" >&5
+$as_echo "$libgo_cv_lib_pthread" >&6; }
+PTHREAD_CFLAGS=
+if test "$libgo_cv_lib_pthread" = yes; then
+  PTHREAD_CFLAGS=-pthread
+fi
+
+
+ if test "$libgo_cv_lib_pthread" = yes; then
+  HAVE_PTHREAD_TRUE=
+  HAVE_PTHREAD_FALSE='#'
+else
+  HAVE_PTHREAD_TRUE='#'
+  HAVE_PTHREAD_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -gdwarf-5 is supported" >&5
+$as_echo_n "checking whether -gdwarf-5 is supported... " >&6; }
+if ${libbacktrace_cv_lib_dwarf5+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  CFLAGS_hold=$CFLAGS
+CFLAGS="$CFLAGS -gdwarf-5"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int i;
+int
+main ()
+{
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  libbacktrace_cv_lib_dwarf5=yes
+else
+  libbacktrace_cv_lib_dwarf5=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+CFLAGS=$CFLAGS_hold
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_lib_dwarf5" >&5
+$as_echo "$libbacktrace_cv_lib_dwarf5" >&6; }
+ if test "$libbacktrace_cv_lib_dwarf5" = yes; then
+  HAVE_DWARF5_TRUE=
+  HAVE_DWARF5_FALSE='#'
+else
+  HAVE_DWARF5_TRUE='#'
+  HAVE_DWARF5_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for compress in -lz" >&5
+$as_echo_n "checking for compress in -lz... " >&6; }
+if ${ac_cv_lib_z_compress+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lz  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char compress ();
+int
+main ()
+{
+return compress ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_z_compress=yes
+else
+  ac_cv_lib_z_compress=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_z_compress" >&5
+$as_echo "$ac_cv_lib_z_compress" >&6; }
+if test "x$ac_cv_lib_z_compress" = xyes; then :
+
+$as_echo "#define HAVE_ZLIB 1" >>confdefs.h
+
+fi
+
+ if test "$ac_cv_lib_z_compress" = yes; then
+  HAVE_ZLIB_TRUE=
+  HAVE_ZLIB_FALSE='#'
+else
+  HAVE_ZLIB_TRUE='#'
+  HAVE_ZLIB_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether --compress-debug-sections is supported" >&5
+$as_echo_n "checking whether --compress-debug-sections is supported... " >&6; }
+if ${libgo_cv_ld_compress+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  LDFLAGS_hold=$LDFLAGS
+LDFLAGS="$LDFLAGS -Wl,--compress-debug-sections=zlib-gnu"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  libgo_cv_ld_compress=yes
+else
+  libgo_cv_ld_compress=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LDFLAGS=$LDFLAGS_hold
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_ld_compress" >&5
+$as_echo "$libgo_cv_ld_compress" >&6; }
+ if test "$libgo_cv_ld_compress" = yes; then
+  HAVE_COMPRESSED_DEBUG_TRUE=
+  HAVE_COMPRESSED_DEBUG_FALSE='#'
+else
+  HAVE_COMPRESSED_DEBUG_TRUE='#'
+  HAVE_COMPRESSED_DEBUG_FALSE=
+fi
+
+
+
+# Extract the first word of "objcopy", so it can be a program name with args.
+set dummy objcopy; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OBJCOPY+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJCOPY"; then
+  ac_cv_prog_OBJCOPY="$OBJCOPY" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_OBJCOPY="objcopy"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJCOPY=$ac_cv_prog_OBJCOPY
+if test -n "$OBJCOPY"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJCOPY" >&5
+$as_echo "$OBJCOPY" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+# Extract the first word of "readelf", so it can be a program name with args.
+set dummy readelf; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_READELF+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$READELF"; then
+  ac_cv_prog_READELF="$READELF" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_READELF="readelf"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+READELF=$ac_cv_prog_READELF
+if test -n "$READELF"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $READELF" >&5
+$as_echo "$READELF" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether objcopy supports debuglink" >&5
+$as_echo_n "checking whether objcopy supports debuglink... " >&6; }
+if ${libbacktrace_cv_objcopy_debuglink+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "${with_target_subdir}"; then
+  libbacktrace_cv_objcopy_debuglink=no
+elif ! test -n "${OBJCOPY}"; then
+  libbacktrace_cv_objcopy_debuglink=no
+elif ${OBJCOPY} --help | grep add-gnu-debuglink >/dev/null 2>&1; then
+  libbacktrace_cv_objcopy_debuglink=yes
+else
+  libbacktrace_cv_objcopy_debuglink=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_objcopy_debuglink" >&5
+$as_echo "$libbacktrace_cv_objcopy_debuglink" >&6; }
+ if test "$libbacktrace_cv_objcopy_debuglink" = yes; then
+  HAVE_OBJCOPY_DEBUGLINK_TRUE=
+  HAVE_OBJCOPY_DEBUGLINK_FALSE='#'
+else
+  HAVE_OBJCOPY_DEBUGLINK_TRUE='#'
+  HAVE_OBJCOPY_DEBUGLINK_FALSE=
+fi
+
+
+
+# Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DSYMUTIL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DSYMUTIL"; then
+  ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_DSYMUTIL="dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ if test -n "${DSYMUTIL}" -a "$FORMAT_FILE" = "macho.lo"; then
+  USE_DSYMUTIL_TRUE=
+  USE_DSYMUTIL_FALSE='#'
+else
+  USE_DSYMUTIL_TRUE='#'
+  USE_DSYMUTIL_FALSE=
+fi
+
+
+
+# Extract the first word of "nm", so it can be a program name with args.
+set dummy nm; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_NM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NM"; then
+  ac_cv_prog_NM="$NM" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_NM="nm"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+NM=$ac_cv_prog_NM
+if test -n "$NM"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NM" >&5
+$as_echo "$NM" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+# Extract the first word of "xz", so it can be a program name with args.
+set dummy xz; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_XZ+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$XZ"; then
+  ac_cv_prog_XZ="$XZ" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_XZ="xz"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+XZ=$ac_cv_prog_XZ
+if test -n "$XZ"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $XZ" >&5
+$as_echo "$XZ" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ if test "$XZ" != ""; then
+  HAVE_XZ_TRUE=
+  HAVE_XZ_FALSE='#'
+else
+  HAVE_XZ_TRUE='#'
+  HAVE_XZ_FALSE=
+fi
+
+# Extract the first word of "comm", so it can be a program name with args.
+set dummy comm; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_COMM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$COMM"; then
+  ac_cv_prog_COMM="$COMM" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_COMM="comm"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+COMM=$ac_cv_prog_COMM
+if test -n "$COMM"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $COMM" >&5
+$as_echo "$COMM" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+ if test "$COMM" != ""; then
+  HAVE_COMM_TRUE=
+  HAVE_COMM_FALSE='#'
+else
+  HAVE_COMM_TRUE='#'
+  HAVE_COMM_FALSE=
+fi
+
+
+ if test "${with_target_subdir}" = "" -a "$FORMAT_FILE" = "elf.lo" -a "${OBJCOPY}" != "" -a "${NM}" != "" -a "${XZ}" != "" -a "${COMM}" != ""; then
+  HAVE_MINIDEBUG_TRUE=
+  HAVE_MINIDEBUG_FALSE='#'
+else
+  HAVE_MINIDEBUG_TRUE='#'
+  HAVE_MINIDEBUG_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for lzma_auto_decoder in -llzma" >&5
+$as_echo_n "checking for lzma_auto_decoder in -llzma... " >&6; }
+if ${ac_cv_lib_lzma_lzma_auto_decoder+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-llzma  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char lzma_auto_decoder ();
+int
+main ()
+{
+return lzma_auto_decoder ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_lzma_lzma_auto_decoder=yes
+else
+  ac_cv_lib_lzma_lzma_auto_decoder=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_lzma_lzma_auto_decoder" >&5
+$as_echo "$ac_cv_lib_lzma_lzma_auto_decoder" >&6; }
+if test "x$ac_cv_lib_lzma_lzma_auto_decoder" = xyes; then :
+
+$as_echo "#define HAVE_LIBLZMA 1" >>confdefs.h
+
+fi
+
+ if test "$ac_cv_lib_lzma_lzma_auto_decoder" = yes; then
+  HAVE_LIBLZMA_TRUE=
+  HAVE_LIBLZMA_FALSE='#'
+else
+  HAVE_LIBLZMA_TRUE='#'
+  HAVE_LIBLZMA_FALSE=
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether tests can run" >&5
+$as_echo_n "checking whether tests can run... " >&6; }
+if ${libbacktrace_cv_sys_native+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "$cross_compiling" = yes; then :
+  libbacktrace_cv_sys_native=no
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+return 0;
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  libbacktrace_cv_sys_native=yes
+else
+  libbacktrace_cv_sys_native=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libbacktrace_cv_sys_native" >&5
+$as_echo "$libbacktrace_cv_sys_native" >&6; }
+ if test "$libbacktrace_cv_sys_native" = "yes"; then
+  NATIVE_TRUE=
+  NATIVE_FALSE='#'
+else
+  NATIVE_TRUE='#'
+  NATIVE_FALSE=
+fi
+
+
+if test "${multilib}" = "yes"; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+ac_config_files="$ac_config_files Makefile backtrace-supported.h"
+
+ac_config_files="$ac_config_files install-debuginfo-for-buildid.sh"
+
+
+# We need multilib support, but only if configuring for the target.
+ac_config_commands="$ac_config_commands default"
+
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking that generated files are newer than configure" >&5
+$as_echo_n "checking that generated files are newer than configure... " >&6; }
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: done" >&5
+$as_echo "done" >&6; }
+ if test -n "$EXEEXT"; then
+  am__EXEEXT_TRUE=
+  am__EXEEXT_FALSE='#'
+else
+  am__EXEEXT_TRUE='#'
+  am__EXEEXT_FALSE=
+fi
+
+if test -z "${MAINTAINER_MODE_TRUE}" && test -z "${MAINTAINER_MODE_FALSE}"; then
+  as_fn_error $? "conditional \"MAINTAINER_MODE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_DWZ_TRUE}" && test -z "${HAVE_DWZ_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_DWZ\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_ELF_TRUE}" && test -z "${HAVE_ELF_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_ELF\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_PTHREAD_TRUE}" && test -z "${HAVE_PTHREAD_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_PTHREAD\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_DWARF5_TRUE}" && test -z "${HAVE_DWARF5_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_DWARF5\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_ZLIB_TRUE}" && test -z "${HAVE_ZLIB_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_ZLIB\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_COMPRESSED_DEBUG_TRUE}" && test -z "${HAVE_COMPRESSED_DEBUG_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_COMPRESSED_DEBUG\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_OBJCOPY_DEBUGLINK_TRUE}" && test -z "${HAVE_OBJCOPY_DEBUGLINK_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_OBJCOPY_DEBUGLINK\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${USE_DSYMUTIL_TRUE}" && test -z "${USE_DSYMUTIL_FALSE}"; then
+  as_fn_error $? "conditional \"USE_DSYMUTIL\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_XZ_TRUE}" && test -z "${HAVE_XZ_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_XZ\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_COMM_TRUE}" && test -z "${HAVE_COMM_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_COMM\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_MINIDEBUG_TRUE}" && test -z "${HAVE_MINIDEBUG_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_MINIDEBUG\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${HAVE_LIBLZMA_TRUE}" && test -z "${HAVE_LIBLZMA_FALSE}"; then
+  as_fn_error $? "conditional \"HAVE_LIBLZMA\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${NATIVE_TRUE}" && test -z "${NATIVE_FALSE}"; then
+  as_fn_error $? "conditional \"NATIVE\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by package-unused $as_me version-unused, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+package-unused config.status version-unused
+configured by $0, generated by GNU Autoconf 2.69,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    $as_echo "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+
+srcdir="$srcdir"
+host="$host"
+target="$target"
+with_multisubdir="$with_multisubdir"
+with_multisrctop="$with_multisrctop"
+with_target_subdir="$with_target_subdir"
+ac_configure_args="${multilib_arg} ${ac_configure_args}"
+multi_basedir="$multi_basedir"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+CC="$CC"
+CXX="$CXX"
+GFORTRAN="$GFORTRAN"
+GDC="$GDC"
+
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
+macro_version='`$ECHO "$macro_version" | $SED "$delay_single_quote_subst"`'
+macro_revision='`$ECHO "$macro_revision" | $SED "$delay_single_quote_subst"`'
+enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
+pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
+enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
+SHELL='`$ECHO "$SHELL" | $SED "$delay_single_quote_subst"`'
+ECHO='`$ECHO "$ECHO" | $SED "$delay_single_quote_subst"`'
+host_alias='`$ECHO "$host_alias" | $SED "$delay_single_quote_subst"`'
+host='`$ECHO "$host" | $SED "$delay_single_quote_subst"`'
+host_os='`$ECHO "$host_os" | $SED "$delay_single_quote_subst"`'
+build_alias='`$ECHO "$build_alias" | $SED "$delay_single_quote_subst"`'
+build='`$ECHO "$build" | $SED "$delay_single_quote_subst"`'
+build_os='`$ECHO "$build_os" | $SED "$delay_single_quote_subst"`'
+SED='`$ECHO "$SED" | $SED "$delay_single_quote_subst"`'
+Xsed='`$ECHO "$Xsed" | $SED "$delay_single_quote_subst"`'
+GREP='`$ECHO "$GREP" | $SED "$delay_single_quote_subst"`'
+EGREP='`$ECHO "$EGREP" | $SED "$delay_single_quote_subst"`'
+FGREP='`$ECHO "$FGREP" | $SED "$delay_single_quote_subst"`'
+LD='`$ECHO "$LD" | $SED "$delay_single_quote_subst"`'
+NM='`$ECHO "$NM" | $SED "$delay_single_quote_subst"`'
+LN_S='`$ECHO "$LN_S" | $SED "$delay_single_quote_subst"`'
+max_cmd_len='`$ECHO "$max_cmd_len" | $SED "$delay_single_quote_subst"`'
+ac_objext='`$ECHO "$ac_objext" | $SED "$delay_single_quote_subst"`'
+exeext='`$ECHO "$exeext" | $SED "$delay_single_quote_subst"`'
+lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`'
+lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`'
+lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`'
+reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
+reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
+OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`'
+deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
+file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
+AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
+AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
+STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
+RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`'
+old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_postuninstall_cmds='`$ECHO "$old_postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_cmds='`$ECHO "$old_archive_cmds" | $SED "$delay_single_quote_subst"`'
+lock_old_archive_extraction='`$ECHO "$lock_old_archive_extraction" | $SED "$delay_single_quote_subst"`'
+CC='`$ECHO "$CC" | $SED "$delay_single_quote_subst"`'
+CFLAGS='`$ECHO "$CFLAGS" | $SED "$delay_single_quote_subst"`'
+compiler='`$ECHO "$compiler" | $SED "$delay_single_quote_subst"`'
+GCC='`$ECHO "$GCC" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_pipe='`$ECHO "$lt_cv_sys_global_symbol_pipe" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`'
+objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`'
+MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`'
+lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`'
+need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`'
+DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`'
+NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`'
+LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`'
+OTOOL='`$ECHO "$OTOOL" | $SED "$delay_single_quote_subst"`'
+OTOOL64='`$ECHO "$OTOOL64" | $SED "$delay_single_quote_subst"`'
+libext='`$ECHO "$libext" | $SED "$delay_single_quote_subst"`'
+shrext_cmds='`$ECHO "$shrext_cmds" | $SED "$delay_single_quote_subst"`'
+extract_expsyms_cmds='`$ECHO "$extract_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds_need_lc='`$ECHO "$archive_cmds_need_lc" | $SED "$delay_single_quote_subst"`'
+enable_shared_with_static_runtimes='`$ECHO "$enable_shared_with_static_runtimes" | $SED "$delay_single_quote_subst"`'
+export_dynamic_flag_spec='`$ECHO "$export_dynamic_flag_spec" | $SED "$delay_single_quote_subst"`'
+whole_archive_flag_spec='`$ECHO "$whole_archive_flag_spec" | $SED "$delay_single_quote_subst"`'
+compiler_needs_object='`$ECHO "$compiler_needs_object" | $SED "$delay_single_quote_subst"`'
+old_archive_from_new_cmds='`$ECHO "$old_archive_from_new_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_from_expsyms_cmds='`$ECHO "$old_archive_from_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds='`$ECHO "$archive_cmds" | $SED "$delay_single_quote_subst"`'
+archive_expsym_cmds='`$ECHO "$archive_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+module_cmds='`$ECHO "$module_cmds" | $SED "$delay_single_quote_subst"`'
+module_expsym_cmds='`$ECHO "$module_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`'
+allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
+no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec_ld='`$ECHO "$hardcode_libdir_flag_spec_ld" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
+hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
+hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
+hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`'
+hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`'
+hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
+inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
+link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
+fix_srcfile_path='`$ECHO "$fix_srcfile_path" | $SED "$delay_single_quote_subst"`'
+always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
+export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
+exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
+include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
+prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
+file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
+variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
+need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
+need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`'
+version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`'
+runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`'
+libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`'
+library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`'
+soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`'
+install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`'
+postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`'
+finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`'
+hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`'
+sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`'
+sys_lib_dlsearch_path_spec='`$ECHO "$sys_lib_dlsearch_path_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`'
+enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`'
+old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`'
+striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`'
+
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in SHELL \
+ECHO \
+SED \
+GREP \
+EGREP \
+FGREP \
+LD \
+NM \
+LN_S \
+lt_SP2NL \
+lt_NL2SP \
+reload_flag \
+OBJDUMP \
+deplibs_check_method \
+file_magic_cmd \
+AR \
+AR_FLAGS \
+STRIP \
+RANLIB \
+CC \
+CFLAGS \
+compiler \
+lt_cv_sys_global_symbol_pipe \
+lt_cv_sys_global_symbol_to_cdecl \
+lt_cv_sys_global_symbol_to_c_name_address \
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+lt_prog_compiler_no_builtin_flag \
+lt_prog_compiler_wl \
+lt_prog_compiler_pic \
+lt_prog_compiler_static \
+lt_cv_prog_compiler_c_o \
+need_locks \
+DSYMUTIL \
+NMEDIT \
+LIPO \
+OTOOL \
+OTOOL64 \
+shrext_cmds \
+export_dynamic_flag_spec \
+whole_archive_flag_spec \
+compiler_needs_object \
+with_gnu_ld \
+allow_undefined_flag \
+no_undefined_flag \
+hardcode_libdir_flag_spec \
+hardcode_libdir_flag_spec_ld \
+hardcode_libdir_separator \
+fix_srcfile_path \
+exclude_expsyms \
+include_expsyms \
+file_list_spec \
+variables_saved_for_relink \
+libname_spec \
+library_names_spec \
+soname_spec \
+install_override_mode \
+finish_eval \
+old_striplib \
+striplib; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in reload_cmds \
+old_postinstall_cmds \
+old_postuninstall_cmds \
+old_archive_cmds \
+extract_expsyms_cmds \
+old_archive_from_new_cmds \
+old_archive_from_expsyms_cmds \
+archive_cmds \
+archive_expsym_cmds \
+module_cmds \
+module_expsym_cmds \
+export_symbols_cmds \
+prelink_cmds \
+postinstall_cmds \
+postuninstall_cmds \
+finish_cmds \
+sys_lib_search_path_spec \
+sys_lib_dlsearch_path_spec; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+ac_aux_dir='$ac_aux_dir'
+xsi_shell='$xsi_shell'
+lt_shell_append='$lt_shell_append'
+
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'
+
+
+
+
+# Variables needed in config.status (file generation) which aren't already
+# passed by autoconf.
+SUBDIRS="$SUBDIRS"
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+    "default-1") CONFIG_COMMANDS="$CONFIG_COMMANDS default-1" ;;
+    "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+    "backtrace-supported.h") CONFIG_FILES="$CONFIG_FILES backtrace-supported.h" ;;
+    "install-debuginfo-for-buildid.sh") CONFIG_FILES="$CONFIG_FILES install-debuginfo-for-buildid.sh" ;;
+    "default") CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+  ac_MKDIR_P=$MKDIR_P
+  case $MKDIR_P in
+  [\\/$]* | ?:[\\/]* ) ;;
+  */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$_am_arg" : 'X\(//\)[^/]' \| \
+	 X"$_am_arg" : 'X\(//\)$' \| \
+	 X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+  :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "default-1":C)
+# Only add multilib support code if we just rebuilt the top-level
+# Makefile.
+case " $CONFIG_FILES " in
+ *" Makefile "*)
+   ac_file=Makefile . ${multi_basedir}/config-ml.in
+   ;;
+esac ;;
+    "libtool":C)
+
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+# The names of the tagged configurations supported by this script.
+available_tags=""
+
+# ### BEGIN LIBTOOL CONFIG
+
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
+# Which release of libtool.m4 was used?
+macro_version=$macro_version
+macro_revision=$macro_revision
+
+# Whether or not to build static libraries.
+build_old_libs=$enable_static
+
+# What type of objects to build.
+pic_mode=$pic_mode
+
+# Whether or not to optimize for fast installation.
+fast_install=$enable_fast_install
+
+# Shell to use when invoking shell scripts.
+SHELL=$lt_SHELL
+
+# An echo program that protects backslashes.
+ECHO=$lt_ECHO
+
+# The host system.
+host_alias=$host_alias
+host=$host
+host_os=$host_os
+
+# The build system.
+build_alias=$build_alias
+build=$build
+build_os=$build_os
+
+# A sed program that does not truncate output.
+SED=$lt_SED
+
+# Sed that helps us avoid accidentally triggering echo(1) options like -n.
+Xsed="\$SED -e 1s/^X//"
+
+# A grep program that handles long lines.
+GREP=$lt_GREP
+
+# An ERE matcher.
+EGREP=$lt_EGREP
+
+# A literal string matcher.
+FGREP=$lt_FGREP
+
+# A BSD- or MS-compatible name lister.
+NM=$lt_NM
+
+# Whether we need soft or hard links.
+LN_S=$lt_LN_S
+
+# What is the maximum length of a command?
+max_cmd_len=$max_cmd_len
+
+# Object file suffix (normally "o").
+objext=$ac_objext
+
+# Executable file suffix (normally "").
+exeext=$exeext
+
+# whether the shell understands "unset".
+lt_unset=$lt_unset
+
+# turn spaces into newlines.
+SP2NL=$lt_lt_SP2NL
+
+# turn newlines into spaces.
+NL2SP=$lt_lt_NL2SP
+
+# An object symbol dumper.
+OBJDUMP=$lt_OBJDUMP
+
+# Method to check whether dependent libraries are shared objects.
+deplibs_check_method=$lt_deplibs_check_method
+
+# Command to use when deplibs_check_method == "file_magic".
+file_magic_cmd=$lt_file_magic_cmd
+
+# The archiver.
+AR=$lt_AR
+AR_FLAGS=$lt_AR_FLAGS
+
+# A symbol stripping program.
+STRIP=$lt_STRIP
+
+# Commands used to install an old-style archive.
+RANLIB=$lt_RANLIB
+old_postinstall_cmds=$lt_old_postinstall_cmds
+old_postuninstall_cmds=$lt_old_postuninstall_cmds
+
+# Whether to use a lock for old archive extraction.
+lock_old_archive_extraction=$lock_old_archive_extraction
+
+# A C compiler.
+LTCC=$lt_CC
+
+# LTCC compiler flags.
+LTCFLAGS=$lt_CFLAGS
+
+# Take the output of nm and produce a listing of raw symbols and C names.
+global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
+
+# Transform the output of nm in a proper C declaration.
+global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
+
+# Transform the output of nm in a C name address pair.
+global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
+
+# Transform the output of nm in a C name address pair when lib prefix is needed.
+global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+
+# The name of the directory that contains temporary libtool files.
+objdir=$objdir
+
+# Used to examine libraries when file_magic_cmd begins with "file".
+MAGIC_CMD=$MAGIC_CMD
+
+# Must we lock files when doing compilation?
+need_locks=$lt_need_locks
+
+# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
+DSYMUTIL=$lt_DSYMUTIL
+
+# Tool to change global to local symbols on Mac OS X.
+NMEDIT=$lt_NMEDIT
+
+# Tool to manipulate fat objects and archives on Mac OS X.
+LIPO=$lt_LIPO
+
+# ldd/readelf like tool for Mach-O binaries on Mac OS X.
+OTOOL=$lt_OTOOL
+
+# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
+OTOOL64=$lt_OTOOL64
+
+# Old archive suffix (normally "a").
+libext=$libext
+
+# Shared library suffix (normally ".so").
+shrext_cmds=$lt_shrext_cmds
+
+# The commands to extract the exported symbol list from a shared archive.
+extract_expsyms_cmds=$lt_extract_expsyms_cmds
+
+# Variables whose values should be saved in libtool wrapper scripts and
+# restored at link time.
+variables_saved_for_relink=$lt_variables_saved_for_relink
+
+# Do we need the "lib" prefix for modules?
+need_lib_prefix=$need_lib_prefix
+
+# Do we need a version for libraries?
+need_version=$need_version
+
+# Library versioning type.
+version_type=$version_type
+
+# Shared library runtime path variable.
+runpath_var=$runpath_var
+
+# Shared library path variable.
+shlibpath_var=$shlibpath_var
+
+# Is shlibpath searched before the hard-coded library search path?
+shlibpath_overrides_runpath=$shlibpath_overrides_runpath
+
+# Format of library name prefix.
+libname_spec=$lt_libname_spec
+
+# List of archive names.  First name is the real one, the rest are links.
+# The last name is the one that the linker finds with -lNAME
+library_names_spec=$lt_library_names_spec
+
+# The coded name of the library, if different from the real name.
+soname_spec=$lt_soname_spec
+
+# Permission mode override for installation of shared libraries.
+install_override_mode=$lt_install_override_mode
+
+# Command to use after installation of a shared archive.
+postinstall_cmds=$lt_postinstall_cmds
+
+# Command to use after uninstallation of a shared archive.
+postuninstall_cmds=$lt_postuninstall_cmds
+
+# Commands used to finish a libtool library installation in a directory.
+finish_cmds=$lt_finish_cmds
+
+# As "finish_cmds", except a single script fragment to be evaled but
+# not shown.
+finish_eval=$lt_finish_eval
+
+# Whether we should hardcode library paths into libraries.
+hardcode_into_libs=$hardcode_into_libs
+
+# Compile-time system search path for libraries.
+sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
+
+# Run-time system search path for libraries.
+sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+
+# Whether dlopen is supported.
+dlopen_support=$enable_dlopen
+
+# Whether dlopen of programs is supported.
+dlopen_self=$enable_dlopen_self
+
+# Whether dlopen of statically linked programs is supported.
+dlopen_self_static=$enable_dlopen_self_static
+
+# Commands to strip libraries.
+old_striplib=$lt_old_striplib
+striplib=$lt_striplib
+
+
+# The linker used to build libraries.
+LD=$lt_LD
+
+# How to create reloadable object files.
+reload_flag=$lt_reload_flag
+reload_cmds=$lt_reload_cmds
+
+# Commands used to build an old-style archive.
+old_archive_cmds=$lt_old_archive_cmds
+
+# A language specific compiler.
+CC=$lt_compiler
+
+# Is the compiler the GNU compiler?
+with_gcc=$GCC
+
+# Compiler flag to turn off builtin functions.
+no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
+
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
+# Additional compiler flags for building library objects.
+pic_flag=$lt_lt_prog_compiler_pic
+
+# Compiler flag to prevent dynamic linking.
+link_static_flag=$lt_lt_prog_compiler_static
+
+# Does compiler simultaneously support -c and -o options?
+compiler_c_o=$lt_lt_cv_prog_compiler_c_o
+
+# Whether or not to add -lc for building shared libraries.
+build_libtool_need_lc=$archive_cmds_need_lc
+
+# Whether or not to disallow shared libs when runtime libs are static.
+allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
+
+# Compiler flag to allow reflexive dlopens.
+export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
+
+# Compiler flag to generate shared objects directly from archives.
+whole_archive_flag_spec=$lt_whole_archive_flag_spec
+
+# Whether the compiler copes with passing no objects directly.
+compiler_needs_object=$lt_compiler_needs_object
+
+# Create an old-style archive from a shared archive.
+old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
+
+# Create a temporary old-style archive to link instead of a shared archive.
+old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
+
+# Commands used to build a shared archive.
+archive_cmds=$lt_archive_cmds
+archive_expsym_cmds=$lt_archive_expsym_cmds
+
+# Commands used to build a loadable module if different from building
+# a shared archive.
+module_cmds=$lt_module_cmds
+module_expsym_cmds=$lt_module_expsym_cmds
+
+# Whether we are building with GNU ld or not.
+with_gnu_ld=$lt_with_gnu_ld
+
+# Flag that allows shared libraries with undefined symbols to be built.
+allow_undefined_flag=$lt_allow_undefined_flag
+
+# Flag that enforces no undefined symbols.
+no_undefined_flag=$lt_no_undefined_flag
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist
+hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
+
+# If ld is used when linking, flag to hardcode \$libdir into a binary
+# during linking.  This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec_ld=$lt_hardcode_libdir_flag_spec_ld
+
+# Whether we need a single "-rpath" flag with a separated argument.
+hardcode_libdir_separator=$lt_hardcode_libdir_separator
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary.
+hardcode_direct=$hardcode_direct
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary and the resulting library dependency is
+# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
+# library is relocated.
+hardcode_direct_absolute=$hardcode_direct_absolute
+
+# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+# into the resulting binary.
+hardcode_minus_L=$hardcode_minus_L
+
+# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+# into the resulting binary.
+hardcode_shlibpath_var=$hardcode_shlibpath_var
+
+# Set to "yes" if building a shared library automatically hardcodes DIR
+# into the library and all subsequent libraries and executables linked
+# against it.
+hardcode_automatic=$hardcode_automatic
+
+# Set to yes if linker adds runtime paths of dependent libraries
+# to runtime path list.
+inherit_rpath=$inherit_rpath
+
+# Whether libtool must link a program against all its dependency libraries.
+link_all_deplibs=$link_all_deplibs
+
+# Fix the shell variable \$srcfile for the compiler.
+fix_srcfile_path=$lt_fix_srcfile_path
+
+# Set to "yes" if exported symbols are required.
+always_export_symbols=$always_export_symbols
+
+# The commands to list exported symbols.
+export_symbols_cmds=$lt_export_symbols_cmds
+
+# Symbols that should not be listed in the preloaded symbols.
+exclude_expsyms=$lt_exclude_expsyms
+
+# Symbols that must always be exported.
+include_expsyms=$lt_include_expsyms
+
+# Commands necessary for linking programs (against libraries) with templates.
+prelink_cmds=$lt_prelink_cmds
+
+# Specify filename containing input files.
+file_list_spec=$lt_file_list_spec
+
+# How to hardcode a shared library path into an executable.
+hardcode_action=$hardcode_action
+
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  case $xsi_shell in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+  func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+  # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+  # positional parameters, so assign one to ordinary parameter first.
+  func_stripname_result=${3}
+  func_stripname_result=${func_stripname_result#"${1}"}
+  func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=${1%%=*}
+  func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  case ${1} in
+    *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+    *)    func_lo2o_result=${1} ;;
+  esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=$(( $* ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=${#1}
+}
+
+_LT_EOF
+    ;;
+  *) # Bourne compatible functions.
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  # Extract subdirectory from the argument.
+  func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+  if test "X$func_dirname_result" = "X${1}"; then
+    func_dirname_result="${3}"
+  else
+    func_dirname_result="$func_dirname_result${2}"
+  fi
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+}
+
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+  case ${2} in
+    .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+    *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+  esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[^=]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[^=]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
+  func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=`expr "$@"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=`expr "$1" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$1+=\$2"
+}
+_LT_EOF
+    ;;
+  *)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$1=\$$1\$2"
+}
+
+_LT_EOF
+    ;;
+  esac
+
+
+  sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+
+ ;;
+    "install-debuginfo-for-buildid.sh":F) chmod +x install-debuginfo-for-buildid.sh ;;
+    "default":C) if test -n "$CONFIG_FILES"; then
+   if test -n "${with_target_subdir}"; then
+     # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
+     # that multilib installs will end up installed in the correct place.
+     # The testsuite needs it for multilib-aware ABI baseline files.
+     # To work around this not being passed down from config-ml.in ->
+     # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
+     # append it here.  Only modify Makefiles that have just been created.
+     #
+     # Also, get rid of this simulated-VPATH thing that automake does.
+     cat > vpsed << \_EOF
+  s!`test -f '$<' || echo '$(srcdir)/'`!!
+_EOF
+     for i in $SUBDIRS; do
+      case $CONFIG_FILES in
+       *${i}/Makefile*)
+	 #echo "Adding MULTISUBDIR to $i/Makefile"
+	 sed -f vpsed $i/Makefile > tmp
+	 grep '^MULTISUBDIR =' Makefile >> tmp
+	 mv tmp $i/Makefile
+	 ;;
+      esac
+     done
+     rm vpsed
+   fi
+ fi
+ ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/fluent-bit/lib/libbacktrace-8602fda/configure.ac b/fluent-bit/lib/libbacktrace-8602fda/configure.ac
new file mode 100644
index 000000000..2857e74e9
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/configure.ac
@@ -0,0 +1,582 @@
+# configure.ac -- Backtrace configure script.
+# Copyright (C) 2012-2021 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+AC_PREREQ(2.69)
+AC_INIT(package-unused, version-unused,, libbacktrace)
+AC_CONFIG_SRCDIR(backtrace.h)
+AC_CONFIG_HEADER(config.h)
+AC_CONFIG_MACRO_DIR(config)
+
+# with_target_subdir is used when configured as part of a GCC tree.
+if test -n "${with_target_subdir}"; then
+  AM_ENABLE_MULTILIB(, ..)
+fi
+
+AC_CANONICAL_SYSTEM
+target_alias=${target_alias-$host_alias}
+
+AC_USE_SYSTEM_EXTENSIONS
+
+# Default to not building a shared library.
+AC_DISABLE_SHARED
+
+libtool_VERSION=1:0:0
+AC_SUBST(libtool_VERSION)
+
+# 1.11.1: Require that version of automake.
+# foreign: Don't require README, INSTALL, NEWS, etc.
+# no-define: Don't define PACKAGE and VERSION.
+# no-dependencies: Don't generate automatic dependencies.
+#    (because it breaks when using bootstrap-lean, since some of the
+#    headers are gone at "make install" time).
+# -Wall: Issue all automake warnings.
+# -Wno-portability: Don't warn about constructs supported by GNU make.
+#    (because GCC requires GNU make anyhow).
+AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies -Wall -Wno-portability])
+
+AM_MAINTAINER_MODE
+
+AC_ARG_WITH(target-subdir,
+[  --with-target-subdir=SUBDIR      Configuring in a subdirectory for target])
+
+# We must force CC to /not/ be precious variables; otherwise
+# the wrong, non-multilib-adjusted value will be used in multilibs.
+# As a side effect, we have to subst CFLAGS ourselves.
+m4_rename([_AC_ARG_VAR_PRECIOUS],[backtrace_PRECIOUS])
+m4_define([_AC_ARG_VAR_PRECIOUS],[])
+AC_PROG_CC
+m4_rename_force([backtrace_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+
+AC_SUBST(CFLAGS)
+
+AC_PROG_RANLIB
+
+AC_PROG_AWK
+case "$AWK" in
+"") AC_MSG_ERROR([can't build without awk]) ;;
+esac
+
+AC_CHECK_PROG(DWZ, dwz, dwz)
+AM_CONDITIONAL(HAVE_DWZ, test "$DWZ" != "")
+
+LT_INIT
+AM_PROG_LIBTOOL
+
+AC_SYS_LARGEFILE
+
+backtrace_supported=yes
+
+if test -n "${with_target_subdir}"; then
+  # We are compiling a GCC library.  We can assume that the unwind
+  # library exists.
+  BACKTRACE_FILE="backtrace.lo simple.lo"
+else
+  AC_CHECK_HEADER([unwind.h],
+    [AC_CHECK_FUNC([_Unwind_Backtrace],
+	           [BACKTRACE_FILE="backtrace.lo simple.lo"],
+		   [BACKTRACE_FILE="nounwind.lo"
+                    backtrace_supported=no])],
+    [BACKTRACE_FILE="nounwind.lo"
+     backtrace_supported=no])
+fi
+AC_SUBST(BACKTRACE_FILE)
+
+EXTRA_FLAGS=
+if test -n "${with_target_subdir}"; then
+  EXTRA_FLAGS="-funwind-tables -frandom-seed=\$@"
+else
+  AC_CACHE_CHECK([for -funwind-tables option],
+    [libbacktrace_cv_c_unwind_tables],
+    [CFLAGS_hold="$CFLAGS"
+     CFLAGS="$CFLAGS -funwind-tables"
+     AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([static int f() { return 0; }], [return f();])],
+       [libbacktrace_cv_c_unwind_tables=yes],
+       [libbacktrace_cv_c_unwind_tables=no])
+     CFLAGS="$CFLAGS_hold"])
+  if test "$libbacktrace_cv_c_unwind_tables" = "yes"; then
+    EXTRA_FLAGS=-funwind-tables
+  fi
+  AC_CACHE_CHECK([for -frandom-seed=string option],
+    [libbacktrace_cv_c_random_seed_string],
+    [CFLAGS_hold="$CFLAGS"
+     CFLAGS="$CFLAGS -frandom-seed=conftest.lo"
+     AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM([], [return 0;])],
+       [libbacktrace_cv_c_random_seed_string=yes],
+       [libbacktrace_cv_c_random_seed_string=no])
+     CFLAGS="$CFLAGS_hold"])
+  if test "$libbacktrace_cv_c_random_seed_string" = "yes"; then
+    EXTRA_FLAGS="$EXTRA_FLAGS -frandom-seed=\$@"
+  fi
+fi
+AC_SUBST(EXTRA_FLAGS)
+
+ACX_PROG_CC_WARNING_OPTS([-W -Wall -Wwrite-strings -Wstrict-prototypes \
+			  -Wmissing-prototypes -Wold-style-definition \
+			  -Wmissing-format-attribute -Wcast-qual],
+			  [WARN_FLAGS])
+
+AC_ARG_ENABLE([werror],
+  [AS_HELP_STRING([--disable-werror], [disable building with -Werror])])
+AS_IF([test "x$enable_werror" != "xno" && test -n "${with_target_subdir}"],
+  [WARN_FLAGS="$WARN_FLAGS -Werror"])
+
+AC_SUBST(WARN_FLAGS)
+
+if test -n "${with_target_subdir}"; then
+  GCC_CHECK_UNWIND_GETIPINFO
+else
+  ac_save_CFFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
+  AC_MSG_CHECKING([for _Unwind_GetIPInfo])
+  AC_LINK_IFELSE(
+    [AC_LANG_PROGRAM(
+       [#include "unwind.h"
+	struct _Unwind_Context *context;
+	int ip_before_insn = 0;],
+	[return _Unwind_GetIPInfo (context, &ip_before_insn);])],
+	[have_unwind_getipinfo=yes], [have_unwind_getipinfo=no])
+  CFLAGS="$ac_save_CFLAGS"
+  AC_MSG_RESULT([$have_unwind_getipinfo])
+  if test "$have_unwind_getipinfo" = "yes"; then
+    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
+  fi
+fi
+
+# Enable --enable-host-shared.
+AC_ARG_ENABLE(host-shared,
+[AS_HELP_STRING([--enable-host-shared],
+		[build host code as shared libraries])],
+[PIC_FLAG=-fPIC], [PIC_FLAG=])
+AC_SUBST(PIC_FLAG)
+
+# Test for __sync support.
+AC_CACHE_CHECK([__sync extensions],
+[libbacktrace_cv_sys_sync],
+[if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
+   *) libbacktrace_cv_sys_sync=yes ;;
+   esac
+ else
+   AC_LINK_IFELSE(
+     [AC_LANG_PROGRAM([int i;],
+                      [__sync_bool_compare_and_swap (&i, i, i);
+                       __sync_lock_test_and_set (&i, 1);
+                       __sync_lock_release (&i);])],
+     [libbacktrace_cv_sys_sync=yes],
+     [libbacktrace_cv_sys_sync=no])
+ fi])
+BACKTRACE_SUPPORTS_THREADS=0
+if test "$libbacktrace_cv_sys_sync" = "yes"; then
+  BACKTRACE_SUPPORTS_THREADS=1
+  AC_DEFINE([HAVE_SYNC_FUNCTIONS], 1,
+	    [Define to 1 if you have the __sync functions])
+fi
+AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
+
+# Test for __atomic support.
+AC_CACHE_CHECK([__atomic extensions],
+[libbacktrace_cv_sys_atomic],
+[if test -n "${with_target_subdir}"; then
+   libbacktrace_cv_sys_atomic=yes
+ else
+   AC_LINK_IFELSE(
+     [AC_LANG_PROGRAM([int i;],
+     		      [__atomic_load_n (&i, __ATOMIC_ACQUIRE);
+		       __atomic_store_n (&i, 1, __ATOMIC_RELEASE);])],
+     [libbacktrace_cv_sys_atomic=yes],
+     [libbacktrace_cv_sys_atomic=no])
+ fi])
+if test "$libbacktrace_cv_sys_atomic" = "yes"; then
+  AC_DEFINE([HAVE_ATOMIC_FUNCTIONS], 1,
+	    [Define to 1 if you have the __atomic functions])
+fi
+
+# The library needs to be able to read the executable itself.  Compile
+# a file to determine the executable format.  The awk script
+# filetype.awk prints out the file type.
+AC_CACHE_CHECK([output filetype],
+[libbacktrace_cv_sys_filetype],
+[filetype=
+AC_COMPILE_IFELSE(
+  [AC_LANG_PROGRAM([int i;], [int j;])],
+  [filetype=`${AWK} -f $srcdir/filetype.awk conftest.$ac_objext`],
+  [AC_MSG_FAILURE([compiler failed])])
+libbacktrace_cv_sys_filetype=$filetype])
+
+# Match the file type to decide what files to compile.
+FORMAT_FILE=
+backtrace_supports_data=yes
+case "$libbacktrace_cv_sys_filetype" in
+elf*) FORMAT_FILE="elf.lo" ;;
+macho) FORMAT_FILE="macho.lo" ;;
+pecoff) FORMAT_FILE="pecoff.lo"
+        backtrace_supports_data=no
+	;;
+xcoff*) FORMAT_FILE="xcoff.lo"
+        backtrace_supports_data=no
+        ;;
+*) AC_MSG_WARN([could not determine output file type])
+   FORMAT_FILE="unknown.lo"
+   backtrace_supported=no
+   ;;
+esac
+AC_SUBST(FORMAT_FILE)
+
+# ELF defines.
+elfsize=
+case "$libbacktrace_cv_sys_filetype" in
+elf32) elfsize=32 ;;
+elf64) elfsize=64 ;;
+*)     elfsize=unused
+esac
+AC_DEFINE_UNQUOTED([BACKTRACE_ELF_SIZE], [$elfsize], [ELF size: 32 or 64])
+AM_CONDITIONAL(HAVE_ELF, test "$FORMAT_FILE" = "elf.lo")
+
+# XCOFF defines.
+xcoffsize=
+case "$libbacktrace_cv_sys_filetype" in
+xcoff32) xcoffsize=32 ;;
+xcoff64) xcoffsize=64 ;;
+*)       xcoffsize=unused
+esac
+AC_DEFINE_UNQUOTED([BACKTRACE_XCOFF_SIZE], [$xcoffsize], [XCOFF size: 32 or 64])
+
+BACKTRACE_SUPPORTED=0
+if test "$backtrace_supported" = "yes"; then
+  BACKTRACE_SUPPORTED=1
+fi
+AC_SUBST(BACKTRACE_SUPPORTED)
+
+BACKTRACE_SUPPORTS_DATA=0
+if test "$backtrace_supports_data" = "yes"; then
+  BACKTRACE_SUPPORTS_DATA=1
+fi
+AC_SUBST(BACKTRACE_SUPPORTS_DATA)
+
+AC_CHECK_HEADERS(sys/mman.h)
+if test "$ac_cv_header_sys_mman_h" = "no"; then
+  have_mmap=no
+else
+  if test -n "${with_target_subdir}"; then
+    # When built as a GCC target library, we can't do a link test.  We
+    # simply assume that if we have mman.h, we have mmap.
+    have_mmap=yes
+    case "${host}" in
+    spu-*-*|*-*-msdosdjgpp)
+        # The SPU does not have mmap, but it has a sys/mman.h header file
+        # containing "mmap_eaddr" and the mmap flags, confusing the test.
+        # DJGPP also has sys/man.h, but no mmap
+	have_mmap=no ;;
+    esac
+  else
+    AC_CHECK_FUNC(mmap, [have_mmap=yes], [have_mmap=no])
+  fi
+fi
+if test "$have_mmap" = "no"; then
+  VIEW_FILE=read.lo
+  ALLOC_FILE=alloc.lo
+else
+  VIEW_FILE=mmapio.lo
+  AC_PREPROC_IFELSE([AC_LANG_SOURCE([
+#include <sys/mman.h>
+#if !defined(MAP_ANONYMOUS) && !defined(MAP_ANON)
+  #error no MAP_ANONYMOUS
+#endif
+])], [ALLOC_FILE=mmap.lo], [ALLOC_FILE=alloc.lo])
+fi
+AC_SUBST(VIEW_FILE)
+AC_SUBST(ALLOC_FILE)
+
+BACKTRACE_USES_MALLOC=0
+if test "$ALLOC_FILE" = "alloc.lo"; then
+  BACKTRACE_USES_MALLOC=1
+fi
+AC_SUBST(BACKTRACE_USES_MALLOC)
+
+# Check for dl_iterate_phdr.
+AC_CHECK_HEADERS(link.h sys/link.h)
+if test "$ac_cv_header_link_h" = "no" -a "$ac_cv_header_sys_link_h" = "no"; then
+  have_dl_iterate_phdr=no
+else
+  if test -n "${with_target_subdir}"; then
+    link_h=link.h
+    if test "$ac_cv_header_link_h" = "no"; then
+       link_h=sys/link.h
+    fi
+    # When built as a GCC target library, we can't do a link test.
+    AC_EGREP_HEADER([dl_iterate_phdr], [$link_h], [have_dl_iterate_phdr=yes],
+		    [have_dl_iterate_phdr=no])
+    case "${host}" in
+    *-*-solaris2.10*)
+        # Avoid dl_iterate_phdr on Solaris 10, where it is in the
+    	# header file but is only in -ldl.
+	have_dl_iterate_phdr=no ;;
+    esac
+  else
+    AC_CHECK_FUNC([dl_iterate_phdr], [have_dl_iterate_phdr=yes],
+		  [have_dl_iterate_phdr=no])
+  fi
+fi
+if test "$have_dl_iterate_phdr" = "yes"; then
+  AC_DEFINE(HAVE_DL_ITERATE_PHDR, 1, [Define if dl_iterate_phdr is available.])
+fi
+
+# Check for header file for Mach-O image functions.
+AC_CHECK_HEADERS(mach-o/dyld.h)
+
+# Check for loadquery.
+AC_CHECK_HEADERS(sys/ldr.h)
+if test "$ac_cv_header_sys_ldr_h" = "no"; then
+  have_loadquery=no
+else
+  if test -n "${with_target_subdir}"; then
+    # When built as a GCC target library, we can't do a link test.
+    AC_EGREP_HEADER([loadquery], [sys/ldr.h], [have_loadquery=yes],
+		    [have_loadquery=no])
+  else
+    AC_CHECK_FUNC([loadquery], [have_loadquery=yes],
+		  [have_loadquery=no])
+  fi
+fi
+if test "$have_loadquery" = "yes"; then
+  AC_DEFINE(HAVE_LOADQUERY, 1, [Define if AIX loadquery is available.])
+fi
+
+# Check for the fcntl function.
+if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   *-*-mingw*) have_fcntl=no ;;
+   spu-*-*) have_fcntl=no ;;
+   *) have_fcntl=yes ;;
+   esac
+else
+  AC_CHECK_FUNC(fcntl, [have_fcntl=yes], [have_fcntl=no])
+fi
+if test "$have_fcntl" = "yes"; then
+  AC_DEFINE([HAVE_FCNTL], 1,
+	    [Define to 1 if you have the fcntl function])
+fi
+
+AC_CHECK_DECLS([strnlen, getpagesize])
+AC_CHECK_FUNCS(lstat readlink)
+
+# Check for getexecname function.
+if test -n "${with_target_subdir}"; then
+   case "${host}" in
+   *-*-solaris2*) have_getexecname=yes ;;
+   *) have_getexecname=no ;;
+   esac
+else
+  AC_CHECK_FUNC(getexecname, [have_getexecname=yes], [have_getexecname=no])
+fi
+if test "$have_getexecname" = "yes"; then
+  AC_DEFINE(HAVE_GETEXECNAME, 1, [Define if getexecname is available.])
+fi
+
+# Check for sysctl definitions.
+
+AC_CACHE_CHECK([for KERN_PROC],
+[libbacktrace_cv_proc],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_PROGRAM([
+#include <sys/types.h>
+#include <sys/sysctl.h>
+], [int mib0 = CTL_KERN; int mib1 = KERN_PROC; int mib2 = KERN_PROC_PATHNAME;])],
+  [libbacktrace_cv_proc=yes],
+  [libbacktrace_cv_proc=no])])
+if test "$libbacktrace_cv_proc" = "yes"; then
+  AC_DEFINE([HAVE_KERN_PROC], 1,
+            [Define to 1 if you have KERN_PROC and KERN_PROC_PATHNAME in <sys/sysctl.h>.])
+fi
+
+AC_CACHE_CHECK([for KERN_PROG_ARGS],
+[libbacktrace_cv_procargs],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_PROGRAM([
+#include <sys/types.h>
+#include <sys/sysctl.h>
+], [int mib0 = CTL_KERN; int mib1 = KERN_PROC_ARGS; int mib2 = KERN_PROC_PATHNAME;])],
+  [libbacktrace_cv_procargs=yes],
+  [libbacktrace_cv_procargs=no])])
+if test "$libbacktrace_cv_procargs" = "yes"; then
+  AC_DEFINE([HAVE_KERN_PROC_ARGS], 1,
+            [Define to 1 if you have KERN_PROCARGS and KERN_PROC_PATHNAME in <sys/sysctl.h>.])
+fi
+
+# Check for the clock_gettime function.
+AC_CHECK_FUNCS(clock_gettime)
+clock_gettime_link=
+# At least for glibc, clock_gettime is in librt.  But don't
+# pull that in if it still doesn't give us the function we want.  This
+# test is copied from libgomp, and modified to not link in -lrt as
+# we're using this for test timing only.
+if test "$ac_cv_func_clock_gettime" = no; then
+  AC_CHECK_LIB(rt, clock_gettime,
+    [CLOCK_GETTIME_LINK=-lrt
+     AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
+	       [Define to 1 if you have the `clock_gettime' function.])])
+fi
+AC_SUBST(CLOCK_GETTIME_LINK)
+
+dnl Test whether the compiler supports the -pthread option.
+AC_CACHE_CHECK([whether -pthread is supported],
+[libgo_cv_lib_pthread],
+[CFLAGS_hold=$CFLAGS
+CFLAGS="$CFLAGS -pthread"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])],
+[libgo_cv_lib_pthread=yes],
+[libgo_cv_lib_pthread=no])
+CFLAGS=$CFLAGS_hold])
+PTHREAD_CFLAGS=
+if test "$libgo_cv_lib_pthread" = yes; then
+  PTHREAD_CFLAGS=-pthread
+fi
+AC_SUBST(PTHREAD_CFLAGS)
+
+AM_CONDITIONAL(HAVE_PTHREAD, test "$libgo_cv_lib_pthread" = yes)
+
+dnl Test whether the compiler and the linker support the -gdwarf-5 option.
+AC_CACHE_CHECK([whether -gdwarf-5 is supported],
+[libbacktrace_cv_lib_dwarf5],
+[CFLAGS_hold=$CFLAGS
+CFLAGS="$CFLAGS -gdwarf-5"
+AC_LINK_IFELSE([AC_LANG_PROGRAM([int i;], [return 0;])],
+[libbacktrace_cv_lib_dwarf5=yes],
+[libbacktrace_cv_lib_dwarf5=no])
+CFLAGS=$CFLAGS_hold])
+AM_CONDITIONAL(HAVE_DWARF5, test "$libbacktrace_cv_lib_dwarf5" = yes)
+
+AC_CHECK_LIB([z], [compress],
+    [AC_DEFINE(HAVE_ZLIB, 1, [Define if -lz is available.])])
+AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_lib_z_compress" = yes)
+
+dnl Test whether the linker supports the --compress_debug_sections option.
+AC_CACHE_CHECK([whether --compress-debug-sections is supported],
+[libgo_cv_ld_compress],
+[LDFLAGS_hold=$LDFLAGS
+LDFLAGS="$LDFLAGS -Wl,--compress-debug-sections=zlib-gnu"
+AC_LINK_IFELSE([AC_LANG_PROGRAM(,)],
+[libgo_cv_ld_compress=yes],
+[libgo_cv_ld_compress=no])
+LDFLAGS=$LDFLAGS_hold])
+AM_CONDITIONAL(HAVE_COMPRESSED_DEBUG, test "$libgo_cv_ld_compress" = yes)
+
+AC_ARG_VAR(OBJCOPY, [location of objcopy])
+AC_CHECK_PROG(OBJCOPY, objcopy, objcopy,)
+AC_CHECK_PROG(READELF, readelf, readelf)
+AC_CACHE_CHECK([whether objcopy supports debuglink],
+[libbacktrace_cv_objcopy_debuglink],
+[if test -n "${with_target_subdir}"; then
+  libbacktrace_cv_objcopy_debuglink=no
+elif ! test -n "${OBJCOPY}"; then
+  libbacktrace_cv_objcopy_debuglink=no
+elif ${OBJCOPY} --help | grep add-gnu-debuglink >/dev/null 2>&1; then
+  libbacktrace_cv_objcopy_debuglink=yes
+else
+  libbacktrace_cv_objcopy_debuglink=no
+fi])
+AM_CONDITIONAL(HAVE_OBJCOPY_DEBUGLINK, test "$libbacktrace_cv_objcopy_debuglink" = yes)
+
+AC_ARG_VAR(DSYMUTIL, [location of dsymutil])
+AC_CHECK_PROG(DSYMUTIL, dsymutil, dsymutil)
+AM_CONDITIONAL(USE_DSYMUTIL, test -n "${DSYMUTIL}" -a "$FORMAT_FILE" = "macho.lo")
+
+AC_ARG_VAR(NM, [location of nm])
+AC_CHECK_PROG(NM, nm, nm)
+
+AC_CHECK_PROG(XZ, xz, xz)
+AM_CONDITIONAL(HAVE_XZ, test "$XZ" != "")
+AC_CHECK_PROG(COMM, comm, comm)
+AM_CONDITIONAL(HAVE_COMM, test "$COMM" != "")
+
+AM_CONDITIONAL(HAVE_MINIDEBUG,
+  test "${with_target_subdir}" = "" -a "$FORMAT_FILE" = "elf.lo" -a "${OBJCOPY}" != "" -a "${NM}" != "" -a "${XZ}" != "" -a "${COMM}" != "")
+
+AC_CHECK_LIB([lzma], [lzma_auto_decoder],
+    [AC_DEFINE(HAVE_LIBLZMA, 1, [Define if -llzma is available.])])
+AM_CONDITIONAL(HAVE_LIBLZMA, test "$ac_cv_lib_lzma_lzma_auto_decoder" = yes)
+
+AC_CACHE_CHECK([whether tests can run],
+  [libbacktrace_cv_sys_native],
+  [AC_RUN_IFELSE([AC_LANG_PROGRAM([], [return 0;])],
+     [libbacktrace_cv_sys_native=yes],
+     [libbacktrace_cv_sys_native=no],
+     [libbacktrace_cv_sys_native=no])])
+AM_CONDITIONAL(NATIVE, test "$libbacktrace_cv_sys_native" = "yes")
+
+if test "${multilib}" = "yes"; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
+
+AC_CONFIG_FILES(Makefile backtrace-supported.h)
+AC_CONFIG_FILES(install-debuginfo-for-buildid.sh, chmod +x install-debuginfo-for-buildid.sh)
+
+# We need multilib support, but only if configuring for the target.
+AC_CONFIG_COMMANDS([default],
+[if test -n "$CONFIG_FILES"; then
+   if test -n "${with_target_subdir}"; then
+     # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
+     # that multilib installs will end up installed in the correct place.
+     # The testsuite needs it for multilib-aware ABI baseline files.
+     # To work around this not being passed down from config-ml.in ->
+     # srcdir/Makefile.am -> srcdir/{src,libsupc++,...}/Makefile.am, manually
+     # append it here.  Only modify Makefiles that have just been created.
+     #
+     # Also, get rid of this simulated-VPATH thing that automake does.
+     cat > vpsed << \_EOF
+  s!`test -f '$<' || echo '$(srcdir)/'`!!
+_EOF
+     for i in $SUBDIRS; do
+      case $CONFIG_FILES in
+       *${i}/Makefile*)
+	 #echo "Adding MULTISUBDIR to $i/Makefile"
+	 sed -f vpsed $i/Makefile > tmp
+	 grep '^MULTISUBDIR =' Makefile >> tmp
+	 mv tmp $i/Makefile
+	 ;;
+      esac
+     done
+     rm vpsed
+   fi
+ fi
+],
+[
+# Variables needed in config.status (file generation) which aren't already
+# passed by autoconf.
+SUBDIRS="$SUBDIRS"
+])
+
+AC_OUTPUT
diff --git a/fluent-bit/lib/libbacktrace-8602fda/dwarf.c b/fluent-bit/lib/libbacktrace-8602fda/dwarf.c
new file mode 100644
index 000000000..5b2724e6a
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/dwarf.c
@@ -0,0 +1,4402 @@
+/* dwarf.c -- Get file/line information from DWARF for backtraces.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* DWARF constants.  */
+
+enum dwarf_tag {
+  DW_TAG_entry_point = 0x3,
+  DW_TAG_compile_unit = 0x11,
+  DW_TAG_inlined_subroutine = 0x1d,
+  DW_TAG_subprogram = 0x2e,
+  DW_TAG_skeleton_unit = 0x4a,
+};
+
+enum dwarf_form {
+  DW_FORM_addr = 0x01,
+  DW_FORM_block2 = 0x03,
+  DW_FORM_block4 = 0x04,
+  DW_FORM_data2 = 0x05,
+  DW_FORM_data4 = 0x06,
+  DW_FORM_data8 = 0x07,
+  DW_FORM_string = 0x08,
+  DW_FORM_block = 0x09,
+  DW_FORM_block1 = 0x0a,
+  DW_FORM_data1 = 0x0b,
+  DW_FORM_flag = 0x0c,
+  DW_FORM_sdata = 0x0d,
+  DW_FORM_strp = 0x0e,
+  DW_FORM_udata = 0x0f,
+  DW_FORM_ref_addr = 0x10,
+  DW_FORM_ref1 = 0x11,
+  DW_FORM_ref2 = 0x12,
+  DW_FORM_ref4 = 0x13,
+  DW_FORM_ref8 = 0x14,
+  DW_FORM_ref_udata = 0x15,
+  DW_FORM_indirect = 0x16,
+  DW_FORM_sec_offset = 0x17,
+  DW_FORM_exprloc = 0x18,
+  DW_FORM_flag_present = 0x19,
+  DW_FORM_ref_sig8 = 0x20,
+  DW_FORM_strx = 0x1a,
+  DW_FORM_addrx = 0x1b,
+  DW_FORM_ref_sup4 = 0x1c,
+  DW_FORM_strp_sup = 0x1d,
+  DW_FORM_data16 = 0x1e,
+  DW_FORM_line_strp = 0x1f,
+  DW_FORM_implicit_const = 0x21,
+  DW_FORM_loclistx = 0x22,
+  DW_FORM_rnglistx = 0x23,
+  DW_FORM_ref_sup8 = 0x24,
+  DW_FORM_strx1 = 0x25,
+  DW_FORM_strx2 = 0x26,
+  DW_FORM_strx3 = 0x27,
+  DW_FORM_strx4 = 0x28,
+  DW_FORM_addrx1 = 0x29,
+  DW_FORM_addrx2 = 0x2a,
+  DW_FORM_addrx3 = 0x2b,
+  DW_FORM_addrx4 = 0x2c,
+  DW_FORM_GNU_addr_index = 0x1f01,
+  DW_FORM_GNU_str_index = 0x1f02,
+  DW_FORM_GNU_ref_alt = 0x1f20,
+  DW_FORM_GNU_strp_alt = 0x1f21
+};
+
+enum dwarf_attribute {
+  DW_AT_sibling = 0x01,
+  DW_AT_location = 0x02,
+  DW_AT_name = 0x03,
+  DW_AT_ordering = 0x09,
+  DW_AT_subscr_data = 0x0a,
+  DW_AT_byte_size = 0x0b,
+  DW_AT_bit_offset = 0x0c,
+  DW_AT_bit_size = 0x0d,
+  DW_AT_element_list = 0x0f,
+  DW_AT_stmt_list = 0x10,
+  DW_AT_low_pc = 0x11,
+  DW_AT_high_pc = 0x12,
+  DW_AT_language = 0x13,
+  DW_AT_member = 0x14,
+  DW_AT_discr = 0x15,
+  DW_AT_discr_value = 0x16,
+  DW_AT_visibility = 0x17,
+  DW_AT_import = 0x18,
+  DW_AT_string_length = 0x19,
+  DW_AT_common_reference = 0x1a,
+  DW_AT_comp_dir = 0x1b,
+  DW_AT_const_value = 0x1c,
+  DW_AT_containing_type = 0x1d,
+  DW_AT_default_value = 0x1e,
+  DW_AT_inline = 0x20,
+  DW_AT_is_optional = 0x21,
+  DW_AT_lower_bound = 0x22,
+  DW_AT_producer = 0x25,
+  DW_AT_prototyped = 0x27,
+  DW_AT_return_addr = 0x2a,
+  DW_AT_start_scope = 0x2c,
+  DW_AT_bit_stride = 0x2e,
+  DW_AT_upper_bound = 0x2f,
+  DW_AT_abstract_origin = 0x31,
+  DW_AT_accessibility = 0x32,
+  DW_AT_address_class = 0x33,
+  DW_AT_artificial = 0x34,
+  DW_AT_base_types = 0x35,
+  DW_AT_calling_convention = 0x36,
+  DW_AT_count = 0x37,
+  DW_AT_data_member_location = 0x38,
+  DW_AT_decl_column = 0x39,
+  DW_AT_decl_file = 0x3a,
+  DW_AT_decl_line = 0x3b,
+  DW_AT_declaration = 0x3c,
+  DW_AT_discr_list = 0x3d,
+  DW_AT_encoding = 0x3e,
+  DW_AT_external = 0x3f,
+  DW_AT_frame_base = 0x40,
+  DW_AT_friend = 0x41,
+  DW_AT_identifier_case = 0x42,
+  DW_AT_macro_info = 0x43,
+  DW_AT_namelist_items = 0x44,
+  DW_AT_priority = 0x45,
+  DW_AT_segment = 0x46,
+  DW_AT_specification = 0x47,
+  DW_AT_static_link = 0x48,
+  DW_AT_type = 0x49,
+  DW_AT_use_location = 0x4a,
+  DW_AT_variable_parameter = 0x4b,
+  DW_AT_virtuality = 0x4c,
+  DW_AT_vtable_elem_location = 0x4d,
+  DW_AT_allocated = 0x4e,
+  DW_AT_associated = 0x4f,
+  DW_AT_data_location = 0x50,
+  DW_AT_byte_stride = 0x51,
+  DW_AT_entry_pc = 0x52,
+  DW_AT_use_UTF8 = 0x53,
+  DW_AT_extension = 0x54,
+  DW_AT_ranges = 0x55,
+  DW_AT_trampoline = 0x56,
+  DW_AT_call_column = 0x57,
+  DW_AT_call_file = 0x58,
+  DW_AT_call_line = 0x59,
+  DW_AT_description = 0x5a,
+  DW_AT_binary_scale = 0x5b,
+  DW_AT_decimal_scale = 0x5c,
+  DW_AT_small = 0x5d,
+  DW_AT_decimal_sign = 0x5e,
+  DW_AT_digit_count = 0x5f,
+  DW_AT_picture_string = 0x60,
+  DW_AT_mutable = 0x61,
+  DW_AT_threads_scaled = 0x62,
+  DW_AT_explicit = 0x63,
+  DW_AT_object_pointer = 0x64,
+  DW_AT_endianity = 0x65,
+  DW_AT_elemental = 0x66,
+  DW_AT_pure = 0x67,
+  DW_AT_recursive = 0x68,
+  DW_AT_signature = 0x69,
+  DW_AT_main_subprogram = 0x6a,
+  DW_AT_data_bit_offset = 0x6b,
+  DW_AT_const_expr = 0x6c,
+  DW_AT_enum_class = 0x6d,
+  DW_AT_linkage_name = 0x6e,
+  DW_AT_string_length_bit_size = 0x6f,
+  DW_AT_string_length_byte_size = 0x70,
+  DW_AT_rank = 0x71,
+  DW_AT_str_offsets_base = 0x72,
+  DW_AT_addr_base = 0x73,
+  DW_AT_rnglists_base = 0x74,
+  DW_AT_dwo_name = 0x76,
+  DW_AT_reference = 0x77,
+  DW_AT_rvalue_reference = 0x78,
+  DW_AT_macros = 0x79,
+  DW_AT_call_all_calls = 0x7a,
+  DW_AT_call_all_source_calls = 0x7b,
+  DW_AT_call_all_tail_calls = 0x7c,
+  DW_AT_call_return_pc = 0x7d,
+  DW_AT_call_value = 0x7e,
+  DW_AT_call_origin = 0x7f,
+  DW_AT_call_parameter = 0x80,
+  DW_AT_call_pc = 0x81,
+  DW_AT_call_tail_call = 0x82,
+  DW_AT_call_target = 0x83,
+  DW_AT_call_target_clobbered = 0x84,
+  DW_AT_call_data_location = 0x85,
+  DW_AT_call_data_value = 0x86,
+  DW_AT_noreturn = 0x87,
+  DW_AT_alignment = 0x88,
+  DW_AT_export_symbols = 0x89,
+  DW_AT_deleted = 0x8a,
+  DW_AT_defaulted = 0x8b,
+  DW_AT_loclists_base = 0x8c,
+  DW_AT_lo_user = 0x2000,
+  DW_AT_hi_user = 0x3fff,
+  DW_AT_MIPS_fde = 0x2001,
+  DW_AT_MIPS_loop_begin = 0x2002,
+  DW_AT_MIPS_tail_loop_begin = 0x2003,
+  DW_AT_MIPS_epilog_begin = 0x2004,
+  DW_AT_MIPS_loop_unroll_factor = 0x2005,
+  DW_AT_MIPS_software_pipeline_depth = 0x2006,
+  DW_AT_MIPS_linkage_name = 0x2007,
+  DW_AT_MIPS_stride = 0x2008,
+  DW_AT_MIPS_abstract_name = 0x2009,
+  DW_AT_MIPS_clone_origin = 0x200a,
+  DW_AT_MIPS_has_inlines = 0x200b,
+  DW_AT_HP_block_index = 0x2000,
+  DW_AT_HP_unmodifiable = 0x2001,
+  DW_AT_HP_prologue = 0x2005,
+  DW_AT_HP_epilogue = 0x2008,
+  DW_AT_HP_actuals_stmt_list = 0x2010,
+  DW_AT_HP_proc_per_section = 0x2011,
+  DW_AT_HP_raw_data_ptr = 0x2012,
+  DW_AT_HP_pass_by_reference = 0x2013,
+  DW_AT_HP_opt_level = 0x2014,
+  DW_AT_HP_prof_version_id = 0x2015,
+  DW_AT_HP_opt_flags = 0x2016,
+  DW_AT_HP_cold_region_low_pc = 0x2017,
+  DW_AT_HP_cold_region_high_pc = 0x2018,
+  DW_AT_HP_all_variables_modifiable = 0x2019,
+  DW_AT_HP_linkage_name = 0x201a,
+  DW_AT_HP_prof_flags = 0x201b,
+  DW_AT_HP_unit_name = 0x201f,
+  DW_AT_HP_unit_size = 0x2020,
+  DW_AT_HP_widened_byte_size = 0x2021,
+  DW_AT_HP_definition_points = 0x2022,
+  DW_AT_HP_default_location = 0x2023,
+  DW_AT_HP_is_result_param = 0x2029,
+  DW_AT_sf_names = 0x2101,
+  DW_AT_src_info = 0x2102,
+  DW_AT_mac_info = 0x2103,
+  DW_AT_src_coords = 0x2104,
+  DW_AT_body_begin = 0x2105,
+  DW_AT_body_end = 0x2106,
+  DW_AT_GNU_vector = 0x2107,
+  DW_AT_GNU_guarded_by = 0x2108,
+  DW_AT_GNU_pt_guarded_by = 0x2109,
+  DW_AT_GNU_guarded = 0x210a,
+  DW_AT_GNU_pt_guarded = 0x210b,
+  DW_AT_GNU_locks_excluded = 0x210c,
+  DW_AT_GNU_exclusive_locks_required = 0x210d,
+  DW_AT_GNU_shared_locks_required = 0x210e,
+  DW_AT_GNU_odr_signature = 0x210f,
+  DW_AT_GNU_template_name = 0x2110,
+  DW_AT_GNU_call_site_value = 0x2111,
+  DW_AT_GNU_call_site_data_value = 0x2112,
+  DW_AT_GNU_call_site_target = 0x2113,
+  DW_AT_GNU_call_site_target_clobbered = 0x2114,
+  DW_AT_GNU_tail_call = 0x2115,
+  DW_AT_GNU_all_tail_call_sites = 0x2116,
+  DW_AT_GNU_all_call_sites = 0x2117,
+  DW_AT_GNU_all_source_call_sites = 0x2118,
+  DW_AT_GNU_macros = 0x2119,
+  DW_AT_GNU_deleted = 0x211a,
+  DW_AT_GNU_dwo_name = 0x2130,
+  DW_AT_GNU_dwo_id = 0x2131,
+  DW_AT_GNU_ranges_base = 0x2132,
+  DW_AT_GNU_addr_base = 0x2133,
+  DW_AT_GNU_pubnames = 0x2134,
+  DW_AT_GNU_pubtypes = 0x2135,
+  DW_AT_GNU_discriminator = 0x2136,
+  DW_AT_GNU_locviews = 0x2137,
+  DW_AT_GNU_entry_view = 0x2138,
+  DW_AT_VMS_rtnbeg_pd_address = 0x2201,
+  DW_AT_use_GNAT_descriptive_type = 0x2301,
+  DW_AT_GNAT_descriptive_type = 0x2302,
+  DW_AT_GNU_numerator = 0x2303,
+  DW_AT_GNU_denominator = 0x2304,
+  DW_AT_GNU_bias = 0x2305,
+  DW_AT_upc_threads_scaled = 0x3210,
+  DW_AT_PGI_lbase = 0x3a00,
+  DW_AT_PGI_soffset = 0x3a01,
+  DW_AT_PGI_lstride = 0x3a02,
+  DW_AT_APPLE_optimized = 0x3fe1,
+  DW_AT_APPLE_flags = 0x3fe2,
+  DW_AT_APPLE_isa = 0x3fe3,
+  DW_AT_APPLE_block = 0x3fe4,
+  DW_AT_APPLE_major_runtime_vers = 0x3fe5,
+  DW_AT_APPLE_runtime_class = 0x3fe6,
+  DW_AT_APPLE_omit_frame_ptr = 0x3fe7,
+  DW_AT_APPLE_property_name = 0x3fe8,
+  DW_AT_APPLE_property_getter = 0x3fe9,
+  DW_AT_APPLE_property_setter = 0x3fea,
+  DW_AT_APPLE_property_attribute = 0x3feb,
+  DW_AT_APPLE_objc_complete_type = 0x3fec,
+  DW_AT_APPLE_property = 0x3fed
+};
+
+enum dwarf_line_number_op {
+  DW_LNS_extended_op = 0x0,
+  DW_LNS_copy = 0x1,
+  DW_LNS_advance_pc = 0x2,
+  DW_LNS_advance_line = 0x3,
+  DW_LNS_set_file = 0x4,
+  DW_LNS_set_column = 0x5,
+  DW_LNS_negate_stmt = 0x6,
+  DW_LNS_set_basic_block = 0x7,
+  DW_LNS_const_add_pc = 0x8,
+  DW_LNS_fixed_advance_pc = 0x9,
+  DW_LNS_set_prologue_end = 0xa,
+  DW_LNS_set_epilogue_begin = 0xb,
+  DW_LNS_set_isa = 0xc,
+};
+
+enum dwarf_extended_line_number_op {
+  DW_LNE_end_sequence = 0x1,
+  DW_LNE_set_address = 0x2,
+  DW_LNE_define_file = 0x3,
+  DW_LNE_set_discriminator = 0x4,
+};
+
+enum dwarf_line_number_content_type {
+  DW_LNCT_path = 0x1,
+  DW_LNCT_directory_index = 0x2,
+  DW_LNCT_timestamp = 0x3,
+  DW_LNCT_size = 0x4,
+  DW_LNCT_MD5 = 0x5,
+  DW_LNCT_lo_user = 0x2000,
+  DW_LNCT_hi_user = 0x3fff
+};
+
+enum dwarf_range_list_entry {
+  DW_RLE_end_of_list = 0x00,
+  DW_RLE_base_addressx = 0x01,
+  DW_RLE_startx_endx = 0x02,
+  DW_RLE_startx_length = 0x03,
+  DW_RLE_offset_pair = 0x04,
+  DW_RLE_base_address = 0x05,
+  DW_RLE_start_end = 0x06,
+  DW_RLE_start_length = 0x07
+};
+
+enum dwarf_unit_type {
+  DW_UT_compile = 0x01,
+  DW_UT_type = 0x02,
+  DW_UT_partial = 0x03,
+  DW_UT_skeleton = 0x04,
+  DW_UT_split_compile = 0x05,
+  DW_UT_split_type = 0x06,
+  DW_UT_lo_user = 0x80,
+  DW_UT_hi_user = 0xff
+};
+
+#if !defined(HAVE_DECL_STRNLEN) || !HAVE_DECL_STRNLEN
+
+/* If strnlen is not declared, provide our own version.  */
+
+static size_t
+xstrnlen (const char *s, size_t maxlen)
+{
+  size_t i;
+
+  for (i = 0; i < maxlen; ++i)
+    if (s[i] == '\0')
+      break;
+  return i;
+}
+
+#define strnlen xstrnlen
+
+#endif
+
+/* A buffer to read DWARF info.  */
+
+struct dwarf_buf
+{
+  /* Buffer name for error messages.  */
+  const char *name;
+  /* Start of the buffer.  */
+  const unsigned char *start;
+  /* Next byte to read.  */
+  const unsigned char *buf;
+  /* The number of bytes remaining.  */
+  size_t left;
+  /* Whether the data is big-endian.  */
+  int is_bigendian;
+  /* Error callback routine.  */
+  backtrace_error_callback error_callback;
+  /* Data for error_callback.  */
+  void *data;
+  /* Non-zero if we've reported an underflow error.  */
+  int reported_underflow;
+};
+
+/* A single attribute in a DWARF abbreviation.  */
+
+struct attr
+{
+  /* The attribute name.  */
+  enum dwarf_attribute name;
+  /* The attribute form.  */
+  enum dwarf_form form;
+  /* The attribute value, for DW_FORM_implicit_const.  */
+  int64_t val;
+};
+
+/* A single DWARF abbreviation.  */
+
+struct abbrev
+{
+  /* The abbrev code--the number used to refer to the abbrev.  */
+  uint64_t code;
+  /* The entry tag.  */
+  enum dwarf_tag tag;
+  /* Non-zero if this abbrev has child entries.  */
+  int has_children;
+  /* The number of attributes.  */
+  size_t num_attrs;
+  /* The attributes.  */
+  struct attr *attrs;
+};
+
+/* The DWARF abbreviations for a compilation unit.  This structure
+   only exists while reading the compilation unit.  Most DWARF readers
+   seem to a hash table to map abbrev ID's to abbrev entries.
+   However, we primarily care about GCC, and GCC simply issues ID's in
+   numerical order starting at 1.  So we simply keep a sorted vector,
+   and try to just look up the code.  */
+
+struct abbrevs
+{
+  /* The number of abbrevs in the vector.  */
+  size_t num_abbrevs;
+  /* The abbrevs, sorted by the code field.  */
+  struct abbrev *abbrevs;
+};
+
+/* The different kinds of attribute values.  */
+
+enum attr_val_encoding
+{
+  /* No attribute value.  */
+  ATTR_VAL_NONE,
+  /* An address.  */
+  ATTR_VAL_ADDRESS,
+  /* An index into the .debug_addr section, whose value is relative to
+   * the DW_AT_addr_base attribute of the compilation unit.  */
+  ATTR_VAL_ADDRESS_INDEX,
+  /* A unsigned integer.  */
+  ATTR_VAL_UINT,
+  /* A sigd integer.  */
+  ATTR_VAL_SINT,
+  /* A string.  */
+  ATTR_VAL_STRING,
+  /* An index into the .debug_str_offsets section.  */
+  ATTR_VAL_STRING_INDEX,
+  /* An offset to other data in the containing unit.  */
+  ATTR_VAL_REF_UNIT,
+  /* An offset to other data within the .debug_info section.  */
+  ATTR_VAL_REF_INFO,
+  /* An offset to other data within the alt .debug_info section.  */
+  ATTR_VAL_REF_ALT_INFO,
+  /* An offset to data in some other section.  */
+  ATTR_VAL_REF_SECTION,
+  /* A type signature.  */
+  ATTR_VAL_REF_TYPE,
+  /* An index into the .debug_rnglists section.  */
+  ATTR_VAL_RNGLISTS_INDEX,
+  /* A block of data (not represented).  */
+  ATTR_VAL_BLOCK,
+  /* An expression (not represented).  */
+  ATTR_VAL_EXPR,
+};
+
+/* An attribute value.  */
+
+struct attr_val
+{
+  /* How the value is stored in the field u.  */
+  enum attr_val_encoding encoding;
+  union
+  {
+    /* ATTR_VAL_ADDRESS*, ATTR_VAL_UINT, ATTR_VAL_REF*.  */
+    uint64_t uint;
+    /* ATTR_VAL_SINT.  */
+    int64_t sint;
+    /* ATTR_VAL_STRING.  */
+    const char *string;
+    /* ATTR_VAL_BLOCK not stored.  */
+  } u;
+};
+
+/* The line number program header.  */
+
+struct line_header
+{
+  /* The version of the line number information.  */
+  int version;
+  /* Address size.  */
+  int addrsize;
+  /* The minimum instruction length.  */
+  unsigned int min_insn_len;
+  /* The maximum number of ops per instruction.  */
+  unsigned int max_ops_per_insn;
+  /* The line base for special opcodes.  */
+  int line_base;
+  /* The line range for special opcodes.  */
+  unsigned int line_range;
+  /* The opcode base--the first special opcode.  */
+  unsigned int opcode_base;
+  /* Opcode lengths, indexed by opcode - 1.  */
+  const unsigned char *opcode_lengths;
+  /* The number of directory entries.  */
+  size_t dirs_count;
+  /* The directory entries.  */
+  const char **dirs;
+  /* The number of filenames.  */
+  size_t filenames_count;
+  /* The filenames.  */
+  const char **filenames;
+};
+
+/* A format description from a line header.  */
+
+struct line_header_format
+{
+  int lnct;		/* LNCT code.  */
+  enum dwarf_form form;	/* Form of entry data.  */
+};
+
+/* Map a single PC value to a file/line.  We will keep a vector of
+   these sorted by PC value.  Each file/line will be correct from the
+   PC up to the PC of the next entry if there is one.  We allocate one
+   extra entry at the end so that we can use bsearch.  */
+
+struct line
+{
+  /* PC.  */
+  uintptr_t pc;
+  /* File name.  Many entries in the array are expected to point to
+     the same file name.  */
+  const char *filename;
+  /* Line number.  */
+  int lineno;
+  /* Index of the object in the original array read from the DWARF
+     section, before it has been sorted.  The index makes it possible
+     to use Quicksort and maintain stability.  */
+  int idx;
+};
+
+/* A growable vector of line number information.  This is used while
+   reading the line numbers.  */
+
+struct line_vector
+{
+  /* Memory.  This is an array of struct line.  */
+  struct backtrace_vector vec;
+  /* Number of valid mappings.  */
+  size_t count;
+};
+
+/* A function described in the debug info.  */
+
+struct function
+{
+  /* The name of the function.  */
+  const char *name;
+  /* If this is an inlined function, the filename of the call
+     site.  */
+  const char *caller_filename;
+  /* If this is an inlined function, the line number of the call
+     site.  */
+  int caller_lineno;
+  /* Map PC ranges to inlined functions.  */
+  struct function_addrs *function_addrs;
+  size_t function_addrs_count;
+};
+
+/* An address range for a function.  This maps a PC value to a
+   specific function.  */
+
+struct function_addrs
+{
+  /* Range is LOW <= PC < HIGH.  */
+  uint64_t low;
+  uint64_t high;
+  /* Function for this address range.  */
+  struct function *function;
+};
+
+/* A growable vector of function address ranges.  */
+
+struct function_vector
+{
+  /* Memory.  This is an array of struct function_addrs.  */
+  struct backtrace_vector vec;
+  /* Number of address ranges present.  */
+  size_t count;
+};
+
+/* A DWARF compilation unit.  This only holds the information we need
+   to map a PC to a file and line.  */
+
+struct unit
+{
+  /* The first entry for this compilation unit.  */
+  const unsigned char *unit_data;
+  /* The length of the data for this compilation unit.  */
+  size_t unit_data_len;
+  /* The offset of UNIT_DATA from the start of the information for
+     this compilation unit.  */
+  size_t unit_data_offset;
+  /* Offset of the start of the compilation unit from the start of the
+     .debug_info section.  */
+  size_t low_offset;
+  /* Offset of the end of the compilation unit from the start of the
+     .debug_info section.  */
+  size_t high_offset;
+  /* DWARF version.  */
+  int version;
+  /* Whether unit is DWARF64.  */
+  int is_dwarf64;
+  /* Address size.  */
+  int addrsize;
+  /* Offset into line number information.  */
+  off_t lineoff;
+  /* Offset of compilation unit in .debug_str_offsets.  */
+  uint64_t str_offsets_base;
+  /* Offset of compilation unit in .debug_addr.  */
+  uint64_t addr_base;
+  /* Offset of compilation unit in .debug_rnglists.  */
+  uint64_t rnglists_base;
+  /* Primary source file.  */
+  const char *filename;
+  /* Compilation command working directory.  */
+  const char *comp_dir;
+  /* Absolute file name, only set if needed.  */
+  const char *abs_filename;
+  /* The abbreviations for this unit.  */
+  struct abbrevs abbrevs;
+
+  /* The fields above this point are read in during initialization and
+     may be accessed freely.  The fields below this point are read in
+     as needed, and therefore require care, as different threads may
+     try to initialize them simultaneously.  */
+
+  /* PC to line number mapping.  This is NULL if the values have not
+     been read.  This is (struct line *) -1 if there was an error
+     reading the values.  */
+  struct line *lines;
+  /* Number of entries in lines.  */
+  size_t lines_count;
+  /* PC ranges to function.  */
+  struct function_addrs *function_addrs;
+  size_t function_addrs_count;
+};
+
+/* An address range for a compilation unit.  This maps a PC value to a
+   specific compilation unit.  Note that we invert the representation
+   in DWARF: instead of listing the units and attaching a list of
+   ranges, we list the ranges and have each one point to the unit.
+   This lets us do a binary search to find the unit.  */
+
+struct unit_addrs
+{
+  /* Range is LOW <= PC < HIGH.  */
+  uint64_t low;
+  uint64_t high;
+  /* Compilation unit for this address range.  */
+  struct unit *u;
+};
+
+/* A growable vector of compilation unit address ranges.  */
+
+struct unit_addrs_vector
+{
+  /* Memory.  This is an array of struct unit_addrs.  */
+  struct backtrace_vector vec;
+  /* Number of address ranges present.  */
+  size_t count;
+};
+
+/* A growable vector of compilation unit pointer.  */
+
+struct unit_vector
+{
+  struct backtrace_vector vec;
+  size_t count;
+};
+
+/* The information we need to map a PC to a file and line.  */
+
+struct dwarf_data
+{
+  /* The data for the next file we know about.  */
+  struct dwarf_data *next;
+  /* The data for .gnu_debugaltlink.  */
+  struct dwarf_data *altlink;
+  /* The base address for this file.  */
+  uintptr_t base_address;
+  /* A sorted list of address ranges.  */
+  struct unit_addrs *addrs;
+  /* Number of address ranges in list.  */
+  size_t addrs_count;
+  /* A sorted list of units.  */
+  struct unit **units;
+  /* Number of units in the list.  */
+  size_t units_count;
+  /* The unparsed DWARF debug data.  */
+  struct dwarf_sections dwarf_sections;
+  /* Whether the data is big-endian or not.  */
+  int is_bigendian;
+  /* A vector used for function addresses.  We keep this here so that
+     we can grow the vector as we read more functions.  */
+  struct function_vector fvec;
+};
+
+/* Report an error for a DWARF buffer.  */
+
+static void
+dwarf_buf_error (struct dwarf_buf *buf, const char *msg, int errnum)
+{
+  char b[200];
+
+  snprintf (b, sizeof b, "%s in %s at %d",
+	    msg, buf->name, (int) (buf->buf - buf->start));
+  buf->error_callback (buf->data, b, errnum);
+}
+
+/* Require at least COUNT bytes in BUF.  Return 1 if all is well, 0 on
+   error.  */
+
+static int
+require (struct dwarf_buf *buf, size_t count)
+{
+  if (buf->left >= count)
+    return 1;
+
+  if (!buf->reported_underflow)
+    {
+      dwarf_buf_error (buf, "DWARF underflow", 0);
+      buf->reported_underflow = 1;
+    }
+
+  return 0;
+}
+
+/* Advance COUNT bytes in BUF.  Return 1 if all is well, 0 on
+   error.  */
+
+static int
+advance (struct dwarf_buf *buf, size_t count)
+{
+  if (!require (buf, count))
+    return 0;
+  buf->buf += count;
+  buf->left -= count;
+  return 1;
+}
+
+/* Read one zero-terminated string from BUF and advance past the string.  */
+
+static const char *
+read_string (struct dwarf_buf *buf)
+{
+  const char *p = (const char *)buf->buf;
+  size_t len = strnlen (p, buf->left);
+
+  /* - If len == left, we ran out of buffer before finding the zero terminator.
+       Generate an error by advancing len + 1.
+     - If len < left, advance by len + 1 to skip past the zero terminator.  */
+  size_t count = len + 1;
+
+  if (!advance (buf, count))
+    return NULL;
+
+  return p;
+}
+
+/* Read one byte from BUF and advance 1 byte.  */
+
+static unsigned char
+read_byte (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 1))
+    return 0;
+  return p[0];
+}
+
+/* Read a signed char from BUF and advance 1 byte.  */
+
+static signed char
+read_sbyte (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 1))
+    return 0;
+  return (*p ^ 0x80) - 0x80;
+}
+
+/* Read a uint16 from BUF and advance 2 bytes.  */
+
+static uint16_t
+read_uint16 (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 2))
+    return 0;
+  if (buf->is_bigendian)
+    return ((uint16_t) p[0] << 8) | (uint16_t) p[1];
+  else
+    return ((uint16_t) p[1] << 8) | (uint16_t) p[0];
+}
+
+/* Read a 24 bit value from BUF and advance 3 bytes.  */
+
+static uint32_t
+read_uint24 (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 3))
+    return 0;
+  if (buf->is_bigendian)
+    return (((uint32_t) p[0] << 16) | ((uint32_t) p[1] << 8)
+	    | (uint32_t) p[2]);
+  else
+    return (((uint32_t) p[2] << 16) | ((uint32_t) p[1] << 8)
+	    | (uint32_t) p[0]);
+}
+
+/* Read a uint32 from BUF and advance 4 bytes.  */
+
+static uint32_t
+read_uint32 (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 4))
+    return 0;
+  if (buf->is_bigendian)
+    return (((uint32_t) p[0] << 24) | ((uint32_t) p[1] << 16)
+	    | ((uint32_t) p[2] << 8) | (uint32_t) p[3]);
+  else
+    return (((uint32_t) p[3] << 24) | ((uint32_t) p[2] << 16)
+	    | ((uint32_t) p[1] << 8) | (uint32_t) p[0]);
+}
+
+/* Read a uint64 from BUF and advance 8 bytes.  */
+
+static uint64_t
+read_uint64 (struct dwarf_buf *buf)
+{
+  const unsigned char *p = buf->buf;
+
+  if (!advance (buf, 8))
+    return 0;
+  if (buf->is_bigendian)
+    return (((uint64_t) p[0] << 56) | ((uint64_t) p[1] << 48)
+	    | ((uint64_t) p[2] << 40) | ((uint64_t) p[3] << 32)
+	    | ((uint64_t) p[4] << 24) | ((uint64_t) p[5] << 16)
+	    | ((uint64_t) p[6] << 8) | (uint64_t) p[7]);
+  else
+    return (((uint64_t) p[7] << 56) | ((uint64_t) p[6] << 48)
+	    | ((uint64_t) p[5] << 40) | ((uint64_t) p[4] << 32)
+	    | ((uint64_t) p[3] << 24) | ((uint64_t) p[2] << 16)
+	    | ((uint64_t) p[1] << 8) | (uint64_t) p[0]);
+}
+
+/* Read an offset from BUF and advance the appropriate number of
+   bytes.  */
+
+static uint64_t
+read_offset (struct dwarf_buf *buf, int is_dwarf64)
+{
+  if (is_dwarf64)
+    return read_uint64 (buf);
+  else
+    return read_uint32 (buf);
+}
+
+/* Read an address from BUF and advance the appropriate number of
+   bytes.  */
+
+static uint64_t
+read_address (struct dwarf_buf *buf, int addrsize)
+{
+  switch (addrsize)
+    {
+    case 1:
+      return read_byte (buf);
+    case 2:
+      return read_uint16 (buf);
+    case 4:
+      return read_uint32 (buf);
+    case 8:
+      return read_uint64 (buf);
+    default:
+      dwarf_buf_error (buf, "unrecognized address size", 0);
+      return 0;
+    }
+}
+
+/* Return whether a value is the highest possible address, given the
+   address size.  */
+
+static int
+is_highest_address (uint64_t address, int addrsize)
+{
+  switch (addrsize)
+    {
+    case 1:
+      return address == (unsigned char) -1;
+    case 2:
+      return address == (uint16_t) -1;
+    case 4:
+      return address == (uint32_t) -1;
+    case 8:
+      return address == (uint64_t) -1;
+    default:
+      return 0;
+    }
+}
+
+/* Read an unsigned LEB128 number.  */
+
+static uint64_t
+read_uleb128 (struct dwarf_buf *buf)
+{
+  uint64_t ret;
+  unsigned int shift;
+  int overflow;
+  unsigned char b;
+
+  ret = 0;
+  shift = 0;
+  overflow = 0;
+  do
+    {
+      const unsigned char *p;
+
+      p = buf->buf;
+      if (!advance (buf, 1))
+	return 0;
+      b = *p;
+      if (shift < 64)
+	ret |= ((uint64_t) (b & 0x7f)) << shift;
+      else if (!overflow)
+	{
+	  dwarf_buf_error (buf, "LEB128 overflows uint64_t", 0);
+	  overflow = 1;
+	}
+      shift += 7;
+    }
+  while ((b & 0x80) != 0);
+
+  return ret;
+}
+
+/* Read a signed LEB128 number.  */
+
+static int64_t
+read_sleb128 (struct dwarf_buf *buf)
+{
+  uint64_t val;
+  unsigned int shift;
+  int overflow;
+  unsigned char b;
+
+  val = 0;
+  shift = 0;
+  overflow = 0;
+  do
+    {
+      const unsigned char *p;
+
+      p = buf->buf;
+      if (!advance (buf, 1))
+	return 0;
+      b = *p;
+      if (shift < 64)
+	val |= ((uint64_t) (b & 0x7f)) << shift;
+      else if (!overflow)
+	{
+	  dwarf_buf_error (buf, "signed LEB128 overflows uint64_t", 0);
+	  overflow = 1;
+	}
+      shift += 7;
+    }
+  while ((b & 0x80) != 0);
+
+  if ((b & 0x40) != 0 && shift < 64)
+    val |= ((uint64_t) -1) << shift;
+
+  return (int64_t) val;
+}
+
+/* Return the length of an LEB128 number.  */
+
+static size_t
+leb128_len (const unsigned char *p)
+{
+  size_t ret;
+
+  ret = 1;
+  while ((*p & 0x80) != 0)
+    {
+      ++p;
+      ++ret;
+    }
+  return ret;
+}
+
+/* Read initial_length from BUF and advance the appropriate number of bytes.  */
+
+static uint64_t
+read_initial_length (struct dwarf_buf *buf, int *is_dwarf64)
+{
+  uint64_t len;
+
+  len = read_uint32 (buf);
+  if (len == 0xffffffff)
+    {
+      len = read_uint64 (buf);
+      *is_dwarf64 = 1;
+    }
+  else
+    *is_dwarf64 = 0;
+
+  return len;
+}
+
+/* Free an abbreviations structure.  */
+
+static void
+free_abbrevs (struct backtrace_state *state, struct abbrevs *abbrevs,
+	      backtrace_error_callback error_callback, void *data)
+{
+  size_t i;
+
+  for (i = 0; i < abbrevs->num_abbrevs; ++i)
+    backtrace_free (state, abbrevs->abbrevs[i].attrs,
+		    abbrevs->abbrevs[i].num_attrs * sizeof (struct attr),
+		    error_callback, data);
+  backtrace_free (state, abbrevs->abbrevs,
+		  abbrevs->num_abbrevs * sizeof (struct abbrev),
+		  error_callback, data);
+  abbrevs->num_abbrevs = 0;
+  abbrevs->abbrevs = NULL;
+}
+
+/* Read an attribute value.  Returns 1 on success, 0 on failure.  If
+   the value can be represented as a uint64_t, sets *VAL and sets
+   *IS_VALID to 1.  We don't try to store the value of other attribute
+   forms, because we don't care about them.  */
+
+static int
+read_attribute (enum dwarf_form form, uint64_t implicit_val,
+		struct dwarf_buf *buf, int is_dwarf64, int version,
+		int addrsize, const struct dwarf_sections *dwarf_sections,
+		struct dwarf_data *altlink, struct attr_val *val)
+{
+  /* Avoid warnings about val.u.FIELD may be used uninitialized if
+     this function is inlined.  The warnings aren't valid but can
+     occur because the different fields are set and used
+     conditionally.  */
+  memset (val, 0, sizeof *val);
+
+  switch (form)
+    {
+    case DW_FORM_addr:
+      val->encoding = ATTR_VAL_ADDRESS;
+      val->u.uint = read_address (buf, addrsize);
+      return 1;
+    case DW_FORM_block2:
+      val->encoding = ATTR_VAL_BLOCK;
+      return advance (buf, read_uint16 (buf));
+    case DW_FORM_block4:
+      val->encoding = ATTR_VAL_BLOCK;
+      return advance (buf, read_uint32 (buf));
+    case DW_FORM_data2:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_uint16 (buf);
+      return 1;
+    case DW_FORM_data4:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_uint32 (buf);
+      return 1;
+    case DW_FORM_data8:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_uint64 (buf);
+      return 1;
+    case DW_FORM_data16:
+      val->encoding = ATTR_VAL_BLOCK;
+      return advance (buf, 16);
+    case DW_FORM_string:
+      val->encoding = ATTR_VAL_STRING;
+      val->u.string = read_string (buf);
+      return val->u.string == NULL ? 0 : 1;
+    case DW_FORM_block:
+      val->encoding = ATTR_VAL_BLOCK;
+      return advance (buf, read_uleb128 (buf));
+    case DW_FORM_block1:
+      val->encoding = ATTR_VAL_BLOCK;
+      return advance (buf, read_byte (buf));
+    case DW_FORM_data1:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_byte (buf);
+      return 1;
+    case DW_FORM_flag:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_byte (buf);
+      return 1;
+    case DW_FORM_sdata:
+      val->encoding = ATTR_VAL_SINT;
+      val->u.sint = read_sleb128 (buf);
+      return 1;
+    case DW_FORM_strp:
+      {
+	uint64_t offset;
+
+	offset = read_offset (buf, is_dwarf64);
+	if (offset >= dwarf_sections->size[DEBUG_STR])
+	  {
+	    dwarf_buf_error (buf, "DW_FORM_strp out of range", 0);
+	    return 0;
+	  }
+	val->encoding = ATTR_VAL_STRING;
+	val->u.string =
+	  (const char *) dwarf_sections->data[DEBUG_STR] + offset;
+	return 1;
+      }
+    case DW_FORM_line_strp:
+      {
+	uint64_t offset;
+
+	offset = read_offset (buf, is_dwarf64);
+	if (offset >= dwarf_sections->size[DEBUG_LINE_STR])
+	  {
+	    dwarf_buf_error (buf, "DW_FORM_line_strp out of range", 0);
+	    return 0;
+	  }
+	val->encoding = ATTR_VAL_STRING;
+	val->u.string =
+	  (const char *) dwarf_sections->data[DEBUG_LINE_STR] + offset;
+	return 1;
+      }
+    case DW_FORM_udata:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_ref_addr:
+      val->encoding = ATTR_VAL_REF_INFO;
+      if (version == 2)
+	val->u.uint = read_address (buf, addrsize);
+      else
+	val->u.uint = read_offset (buf, is_dwarf64);
+      return 1;
+    case DW_FORM_ref1:
+      val->encoding = ATTR_VAL_REF_UNIT;
+      val->u.uint = read_byte (buf);
+      return 1;
+    case DW_FORM_ref2:
+      val->encoding = ATTR_VAL_REF_UNIT;
+      val->u.uint = read_uint16 (buf);
+      return 1;
+    case DW_FORM_ref4:
+      val->encoding = ATTR_VAL_REF_UNIT;
+      val->u.uint = read_uint32 (buf);
+      return 1;
+    case DW_FORM_ref8:
+      val->encoding = ATTR_VAL_REF_UNIT;
+      val->u.uint = read_uint64 (buf);
+      return 1;
+    case DW_FORM_ref_udata:
+      val->encoding = ATTR_VAL_REF_UNIT;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_indirect:
+      {
+	uint64_t form;
+
+	form = read_uleb128 (buf);
+	if (form == DW_FORM_implicit_const)
+	  {
+	    dwarf_buf_error (buf,
+			     "DW_FORM_indirect to DW_FORM_implicit_const",
+			     0);
+	    return 0;
+	  }
+	return read_attribute ((enum dwarf_form) form, 0, buf, is_dwarf64,
+			       version, addrsize, dwarf_sections, altlink,
+			       val);
+      }
+    case DW_FORM_sec_offset:
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_offset (buf, is_dwarf64);
+      return 1;
+    case DW_FORM_exprloc:
+      val->encoding = ATTR_VAL_EXPR;
+      return advance (buf, read_uleb128 (buf));
+    case DW_FORM_flag_present:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = 1;
+      return 1;
+    case DW_FORM_ref_sig8:
+      val->encoding = ATTR_VAL_REF_TYPE;
+      val->u.uint = read_uint64 (buf);
+      return 1;
+    case DW_FORM_strx: case DW_FORM_strx1: case DW_FORM_strx2:
+    case DW_FORM_strx3: case DW_FORM_strx4:
+      {
+	uint64_t offset;
+
+	switch (form)
+	  {
+	  case DW_FORM_strx:
+	    offset = read_uleb128 (buf);
+	    break;
+	  case DW_FORM_strx1:
+	    offset = read_byte (buf);
+	    break;
+	  case DW_FORM_strx2:
+	    offset = read_uint16 (buf);
+	    break;
+	  case DW_FORM_strx3:
+	    offset = read_uint24 (buf);
+	    break;
+	  case DW_FORM_strx4:
+	    offset = read_uint32 (buf);
+	    break;
+	  default:
+	    /* This case can't happen.  */
+	    return 0;
+	  }
+	val->encoding = ATTR_VAL_STRING_INDEX;
+	val->u.uint = offset;
+	return 1;
+      }
+    case DW_FORM_addrx: case DW_FORM_addrx1: case DW_FORM_addrx2:
+    case DW_FORM_addrx3: case DW_FORM_addrx4:
+      {
+	uint64_t offset;
+
+	switch (form)
+	  {
+	  case DW_FORM_addrx:
+	    offset = read_uleb128 (buf);
+	    break;
+	  case DW_FORM_addrx1:
+	    offset = read_byte (buf);
+	    break;
+	  case DW_FORM_addrx2:
+	    offset = read_uint16 (buf);
+	    break;
+	  case DW_FORM_addrx3:
+	    offset = read_uint24 (buf);
+	    break;
+	  case DW_FORM_addrx4:
+	    offset = read_uint32 (buf);
+	    break;
+	  default:
+	    /* This case can't happen.  */
+	    return 0;
+	  }
+	val->encoding = ATTR_VAL_ADDRESS_INDEX;
+	val->u.uint = offset;
+	return 1;
+      }
+    case DW_FORM_ref_sup4:
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_uint32 (buf);
+      return 1;
+    case DW_FORM_ref_sup8:
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_uint64 (buf);
+      return 1;
+    case DW_FORM_implicit_const:
+      val->encoding = ATTR_VAL_UINT;
+      val->u.uint = implicit_val;
+      return 1;
+    case DW_FORM_loclistx:
+      /* We don't distinguish this from DW_FORM_sec_offset.  It
+       * shouldn't matter since we don't care about loclists.  */
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_rnglistx:
+      val->encoding = ATTR_VAL_RNGLISTS_INDEX;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_GNU_addr_index:
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_GNU_str_index:
+      val->encoding = ATTR_VAL_REF_SECTION;
+      val->u.uint = read_uleb128 (buf);
+      return 1;
+    case DW_FORM_GNU_ref_alt:
+      val->u.uint = read_offset (buf, is_dwarf64);
+      if (altlink == NULL)
+	{
+	  val->encoding = ATTR_VAL_NONE;
+	  return 1;
+	}
+      val->encoding = ATTR_VAL_REF_ALT_INFO;
+      return 1;
+    case DW_FORM_strp_sup: case DW_FORM_GNU_strp_alt:
+      {
+	uint64_t offset;
+
+	offset = read_offset (buf, is_dwarf64);
+	if (altlink == NULL)
+	  {
+	    val->encoding = ATTR_VAL_NONE;
+	    return 1;
+	  }
+	if (offset >= altlink->dwarf_sections.size[DEBUG_STR])
+	  {
+	    dwarf_buf_error (buf, "DW_FORM_strp_sup out of range", 0);
+	    return 0;
+	  }
+	val->encoding = ATTR_VAL_STRING;
+	val->u.string =
+	  (const char *) altlink->dwarf_sections.data[DEBUG_STR] + offset;
+	return 1;
+      }
+    default:
+      dwarf_buf_error (buf, "unrecognized DWARF form", -1);
+      return 0;
+    }
+}
+
+/* If we can determine the value of a string attribute, set *STRING to
+   point to the string.  Return 1 on success, 0 on error.  If we don't
+   know the value, we consider that a success, and we don't change
+   *STRING.  An error is only reported for some sort of out of range
+   offset.  */
+
+static int
+resolve_string (const struct dwarf_sections *dwarf_sections, int is_dwarf64,
+		int is_bigendian, uint64_t str_offsets_base,
+		const struct attr_val *val,
+		backtrace_error_callback error_callback, void *data,
+		const char **string)
+{
+  switch (val->encoding)
+    {
+    case ATTR_VAL_STRING:
+      *string = val->u.string;
+      return 1;
+
+    case ATTR_VAL_STRING_INDEX:
+      {
+	uint64_t offset;
+	struct dwarf_buf offset_buf;
+
+	offset = val->u.uint * (is_dwarf64 ? 8 : 4) + str_offsets_base;
+	if (offset + (is_dwarf64 ? 8 : 4)
+	    > dwarf_sections->size[DEBUG_STR_OFFSETS])
+	  {
+	    error_callback (data, "DW_FORM_strx value out of range", 0);
+	    return 0;
+	  }
+
+	offset_buf.name = ".debug_str_offsets";
+	offset_buf.start = dwarf_sections->data[DEBUG_STR_OFFSETS];
+	offset_buf.buf = dwarf_sections->data[DEBUG_STR_OFFSETS] + offset;
+	offset_buf.left = dwarf_sections->size[DEBUG_STR_OFFSETS] - offset;
+	offset_buf.is_bigendian = is_bigendian;
+	offset_buf.error_callback = error_callback;
+	offset_buf.data = data;
+	offset_buf.reported_underflow = 0;
+
+	offset = read_offset (&offset_buf, is_dwarf64);
+	if (offset >= dwarf_sections->size[DEBUG_STR])
+	  {
+	    dwarf_buf_error (&offset_buf,
+			     "DW_FORM_strx offset out of range",
+			     0);
+	    return 0;
+	  }
+	*string = (const char *) dwarf_sections->data[DEBUG_STR] + offset;
+	return 1;
+      }
+
+    default:
+      return 1;
+    }
+}
+
+/* Set *ADDRESS to the real address for a ATTR_VAL_ADDRESS_INDEX.
+   Return 1 on success, 0 on error.  */
+
+static int
+resolve_addr_index (const struct dwarf_sections *dwarf_sections,
+		    uint64_t addr_base, int addrsize, int is_bigendian,
+		    uint64_t addr_index,
+		    backtrace_error_callback error_callback, void *data,
+		    uint64_t *address)
+{
+  uint64_t offset;
+  struct dwarf_buf addr_buf;
+
+  offset = addr_index * addrsize + addr_base;
+  if (offset + addrsize > dwarf_sections->size[DEBUG_ADDR])
+    {
+      error_callback (data, "DW_FORM_addrx value out of range", 0);
+      return 0;
+    }
+
+  addr_buf.name = ".debug_addr";
+  addr_buf.start = dwarf_sections->data[DEBUG_ADDR];
+  addr_buf.buf = dwarf_sections->data[DEBUG_ADDR] + offset;
+  addr_buf.left = dwarf_sections->size[DEBUG_ADDR] - offset;
+  addr_buf.is_bigendian = is_bigendian;
+  addr_buf.error_callback = error_callback;
+  addr_buf.data = data;
+  addr_buf.reported_underflow = 0;
+
+  *address = read_address (&addr_buf, addrsize);
+  return 1;
+}
+
+/* Compare a unit offset against a unit for bsearch.  */
+
+static int
+units_search (const void *vkey, const void *ventry)
+{
+  const size_t *key = (const size_t *) vkey;
+  const struct unit *entry = *((const struct unit *const *) ventry);
+  size_t offset;
+
+  offset = *key;
+  if (offset < entry->low_offset)
+    return -1;
+  else if (offset >= entry->high_offset)
+    return 1;
+  else
+    return 0;
+}
+
+/* Find a unit in PU containing OFFSET.  */
+
+static struct unit *
+find_unit (struct unit **pu, size_t units_count, size_t offset)
+{
+  struct unit **u;
+  u = bsearch (&offset, pu, units_count, sizeof (struct unit *), units_search);
+  return u == NULL ? NULL : *u;
+}
+
+/* Compare function_addrs for qsort.  When ranges are nested, make the
+   smallest one sort last.  */
+
+static int
+function_addrs_compare (const void *v1, const void *v2)
+{
+  const struct function_addrs *a1 = (const struct function_addrs *) v1;
+  const struct function_addrs *a2 = (const struct function_addrs *) v2;
+
+  if (a1->low < a2->low)
+    return -1;
+  if (a1->low > a2->low)
+    return 1;
+  if (a1->high < a2->high)
+    return 1;
+  if (a1->high > a2->high)
+    return -1;
+  return strcmp (a1->function->name, a2->function->name);
+}
+
+/* Compare a PC against a function_addrs for bsearch.  We always
+   allocate an entra entry at the end of the vector, so that this
+   routine can safely look at the next entry.  Note that if there are
+   multiple ranges containing PC, which one will be returned is
+   unpredictable.  We compensate for that in dwarf_fileline.  */
+
+static int
+function_addrs_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct function_addrs *entry = (const struct function_addrs *) ventry;
+  uintptr_t pc;
+
+  pc = *key;
+  if (pc < entry->low)
+    return -1;
+  else if (pc > (entry + 1)->low)
+    return 1;
+  else
+    return 0;
+}
+
+/* Add a new compilation unit address range to a vector.  This is
+   called via add_ranges.  Returns 1 on success, 0 on failure.  */
+
+static int
+add_unit_addr (struct backtrace_state *state, void *rdata,
+	       uint64_t lowpc, uint64_t highpc,
+	       backtrace_error_callback error_callback, void *data,
+	       void *pvec)
+{
+  struct unit *u = (struct unit *) rdata;
+  struct unit_addrs_vector *vec = (struct unit_addrs_vector *) pvec;
+  struct unit_addrs *p;
+
+  /* Try to merge with the last entry.  */
+  if (vec->count > 0)
+    {
+      p = (struct unit_addrs *) vec->vec.base + (vec->count - 1);
+      if ((lowpc == p->high || lowpc == p->high + 1)
+	  && u == p->u)
+	{
+	  if (highpc > p->high)
+	    p->high = highpc;
+	  return 1;
+	}
+    }
+
+  p = ((struct unit_addrs *)
+       backtrace_vector_grow (state, sizeof (struct unit_addrs),
+			      error_callback, data, &vec->vec));
+  if (p == NULL)
+    return 0;
+
+  p->low = lowpc;
+  p->high = highpc;
+  p->u = u;
+
+  ++vec->count;
+
+  return 1;
+}
+
+/* Compare unit_addrs for qsort.  When ranges are nested, make the
+   smallest one sort last.  */
+
+static int
+unit_addrs_compare (const void *v1, const void *v2)
+{
+  const struct unit_addrs *a1 = (const struct unit_addrs *) v1;
+  const struct unit_addrs *a2 = (const struct unit_addrs *) v2;
+
+  if (a1->low < a2->low)
+    return -1;
+  if (a1->low > a2->low)
+    return 1;
+  if (a1->high < a2->high)
+    return 1;
+  if (a1->high > a2->high)
+    return -1;
+  if (a1->u->lineoff < a2->u->lineoff)
+    return -1;
+  if (a1->u->lineoff > a2->u->lineoff)
+    return 1;
+  return 0;
+}
+
+/* Compare a PC against a unit_addrs for bsearch.  We always allocate
+   an entry entry at the end of the vector, so that this routine can
+   safely look at the next entry.  Note that if there are multiple
+   ranges containing PC, which one will be returned is unpredictable.
+   We compensate for that in dwarf_fileline.  */
+
+static int
+unit_addrs_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct unit_addrs *entry = (const struct unit_addrs *) ventry;
+  uintptr_t pc;
+
+  pc = *key;
+  if (pc < entry->low)
+    return -1;
+  else if (pc > (entry + 1)->low)
+    return 1;
+  else
+    return 0;
+}
+
+/* Sort the line vector by PC.  We want a stable sort here to maintain
+   the order of lines for the same PC values.  Since the sequence is
+   being sorted in place, their addresses cannot be relied on to
+   maintain stability.  That is the purpose of the index member.  */
+
+static int
+line_compare (const void *v1, const void *v2)
+{
+  const struct line *ln1 = (const struct line *) v1;
+  const struct line *ln2 = (const struct line *) v2;
+
+  if (ln1->pc < ln2->pc)
+    return -1;
+  else if (ln1->pc > ln2->pc)
+    return 1;
+  else if (ln1->idx < ln2->idx)
+    return -1;
+  else if (ln1->idx > ln2->idx)
+    return 1;
+  else
+    return 0;
+}
+
+/* Find a PC in a line vector.  We always allocate an extra entry at
+   the end of the lines vector, so that this routine can safely look
+   at the next entry.  Note that when there are multiple mappings for
+   the same PC value, this will return the last one.  */
+
+static int
+line_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct line *entry = (const struct line *) ventry;
+  uintptr_t pc;
+
+  pc = *key;
+  if (pc < entry->pc)
+    return -1;
+  else if (pc >= (entry + 1)->pc)
+    return 1;
+  else
+    return 0;
+}
+
+/* Sort the abbrevs by the abbrev code.  This function is passed to
+   both qsort and bsearch.  */
+
+static int
+abbrev_compare (const void *v1, const void *v2)
+{
+  const struct abbrev *a1 = (const struct abbrev *) v1;
+  const struct abbrev *a2 = (const struct abbrev *) v2;
+
+  if (a1->code < a2->code)
+    return -1;
+  else if (a1->code > a2->code)
+    return 1;
+  else
+    {
+      /* This really shouldn't happen.  It means there are two
+	 different abbrevs with the same code, and that means we don't
+	 know which one lookup_abbrev should return.  */
+      return 0;
+    }
+}
+
+/* Read the abbreviation table for a compilation unit.  Returns 1 on
+   success, 0 on failure.  */
+
+static int
+read_abbrevs (struct backtrace_state *state, uint64_t abbrev_offset,
+	      const unsigned char *dwarf_abbrev, size_t dwarf_abbrev_size,
+	      int is_bigendian, backtrace_error_callback error_callback,
+	      void *data, struct abbrevs *abbrevs)
+{
+  struct dwarf_buf abbrev_buf;
+  struct dwarf_buf count_buf;
+  size_t num_abbrevs;
+
+  abbrevs->num_abbrevs = 0;
+  abbrevs->abbrevs = NULL;
+
+  if (abbrev_offset >= dwarf_abbrev_size)
+    {
+      error_callback (data, "abbrev offset out of range", 0);
+      return 0;
+    }
+
+  abbrev_buf.name = ".debug_abbrev";
+  abbrev_buf.start = dwarf_abbrev;
+  abbrev_buf.buf = dwarf_abbrev + abbrev_offset;
+  abbrev_buf.left = dwarf_abbrev_size - abbrev_offset;
+  abbrev_buf.is_bigendian = is_bigendian;
+  abbrev_buf.error_callback = error_callback;
+  abbrev_buf.data = data;
+  abbrev_buf.reported_underflow = 0;
+
+  /* Count the number of abbrevs in this list.  */
+
+  count_buf = abbrev_buf;
+  num_abbrevs = 0;
+  while (read_uleb128 (&count_buf) != 0)
+    {
+      if (count_buf.reported_underflow)
+	return 0;
+      ++num_abbrevs;
+      // Skip tag.
+      read_uleb128 (&count_buf);
+      // Skip has_children.
+      read_byte (&count_buf);
+      // Skip attributes.
+      while (read_uleb128 (&count_buf) != 0)
+	{
+	  uint64_t form;
+
+	  form = read_uleb128 (&count_buf);
+	  if ((enum dwarf_form) form == DW_FORM_implicit_const)
+	    read_sleb128 (&count_buf);
+	}
+      // Skip form of last attribute.
+      read_uleb128 (&count_buf);
+    }
+
+  if (count_buf.reported_underflow)
+    return 0;
+
+  if (num_abbrevs == 0)
+    return 1;
+
+  abbrevs->abbrevs = ((struct abbrev *)
+		      backtrace_alloc (state,
+				       num_abbrevs * sizeof (struct abbrev),
+				       error_callback, data));
+  if (abbrevs->abbrevs == NULL)
+    return 0;
+  abbrevs->num_abbrevs = num_abbrevs;
+  memset (abbrevs->abbrevs, 0, num_abbrevs * sizeof (struct abbrev));
+
+  num_abbrevs = 0;
+  while (1)
+    {
+      uint64_t code;
+      struct abbrev a;
+      size_t num_attrs;
+      struct attr *attrs;
+
+      if (abbrev_buf.reported_underflow)
+	goto fail;
+
+      code = read_uleb128 (&abbrev_buf);
+      if (code == 0)
+	break;
+
+      a.code = code;
+      a.tag = (enum dwarf_tag) read_uleb128 (&abbrev_buf);
+      a.has_children = read_byte (&abbrev_buf);
+
+      count_buf = abbrev_buf;
+      num_attrs = 0;
+      while (read_uleb128 (&count_buf) != 0)
+	{
+	  uint64_t form;
+
+	  ++num_attrs;
+	  form = read_uleb128 (&count_buf);
+	  if ((enum dwarf_form) form == DW_FORM_implicit_const)
+	    read_sleb128 (&count_buf);
+	}
+
+      if (num_attrs == 0)
+	{
+	  attrs = NULL;
+	  read_uleb128 (&abbrev_buf);
+	  read_uleb128 (&abbrev_buf);
+	}
+      else
+	{
+	  attrs = ((struct attr *)
+		   backtrace_alloc (state, num_attrs * sizeof *attrs,
+				    error_callback, data));
+	  if (attrs == NULL)
+	    goto fail;
+	  num_attrs = 0;
+	  while (1)
+	    {
+	      uint64_t name;
+	      uint64_t form;
+
+	      name = read_uleb128 (&abbrev_buf);
+	      form = read_uleb128 (&abbrev_buf);
+	      if (name == 0)
+		break;
+	      attrs[num_attrs].name = (enum dwarf_attribute) name;
+	      attrs[num_attrs].form = (enum dwarf_form) form;
+	      if ((enum dwarf_form) form == DW_FORM_implicit_const)
+		attrs[num_attrs].val = read_sleb128 (&abbrev_buf);
+	      else
+		attrs[num_attrs].val = 0;
+	      ++num_attrs;
+	    }
+	}
+
+      a.num_attrs = num_attrs;
+      a.attrs = attrs;
+
+      abbrevs->abbrevs[num_abbrevs] = a;
+      ++num_abbrevs;
+    }
+
+  backtrace_qsort (abbrevs->abbrevs, abbrevs->num_abbrevs,
+		   sizeof (struct abbrev), abbrev_compare);
+
+  return 1;
+
+ fail:
+  free_abbrevs (state, abbrevs, error_callback, data);
+  return 0;
+}
+
+/* Return the abbrev information for an abbrev code.  */
+
+static const struct abbrev *
+lookup_abbrev (struct abbrevs *abbrevs, uint64_t code,
+	       backtrace_error_callback error_callback, void *data)
+{
+  struct abbrev key;
+  void *p;
+
+  /* With GCC, where abbrevs are simply numbered in order, we should
+     be able to just look up the entry.  */
+  if (code - 1 < abbrevs->num_abbrevs
+      && abbrevs->abbrevs[code - 1].code == code)
+    return &abbrevs->abbrevs[code - 1];
+
+  /* Otherwise we have to search.  */
+  memset (&key, 0, sizeof key);
+  key.code = code;
+  p = bsearch (&key, abbrevs->abbrevs, abbrevs->num_abbrevs,
+	       sizeof (struct abbrev), abbrev_compare);
+  if (p == NULL)
+    {
+      error_callback (data, "invalid abbreviation code", 0);
+      return NULL;
+    }
+  return (const struct abbrev *) p;
+}
+
+/* This struct is used to gather address range information while
+   reading attributes.  We use this while building a mapping from
+   address ranges to compilation units and then again while mapping
+   from address ranges to function entries.  Normally either
+   lowpc/highpc is set or ranges is set.  */
+
+struct pcrange {
+  uint64_t lowpc;		/* The low PC value.  */
+  int have_lowpc;		/* Whether a low PC value was found.  */
+  int lowpc_is_addr_index;	/* Whether lowpc is in .debug_addr.  */
+  uint64_t highpc;		/* The high PC value.  */
+  int have_highpc;		/* Whether a high PC value was found.  */
+  int highpc_is_relative;	/* Whether highpc is relative to lowpc.  */
+  int highpc_is_addr_index;	/* Whether highpc is in .debug_addr.  */
+  uint64_t ranges;		/* Offset in ranges section.  */
+  int have_ranges;		/* Whether ranges is valid.  */
+  int ranges_is_index;		/* Whether ranges is DW_FORM_rnglistx.  */
+};
+
+/* Update PCRANGE from an attribute value.  */
+
+static void
+update_pcrange (const struct attr* attr, const struct attr_val* val,
+		struct pcrange *pcrange)
+{
+  switch (attr->name)
+    {
+    case DW_AT_low_pc:
+      if (val->encoding == ATTR_VAL_ADDRESS)
+	{
+	  pcrange->lowpc = val->u.uint;
+	  pcrange->have_lowpc = 1;
+	}
+      else if (val->encoding == ATTR_VAL_ADDRESS_INDEX)
+	{
+	  pcrange->lowpc = val->u.uint;
+	  pcrange->have_lowpc = 1;
+	  pcrange->lowpc_is_addr_index = 1;
+	}
+      break;
+
+    case DW_AT_high_pc:
+      if (val->encoding == ATTR_VAL_ADDRESS)
+	{
+	  pcrange->highpc = val->u.uint;
+	  pcrange->have_highpc = 1;
+	}
+      else if (val->encoding == ATTR_VAL_UINT)
+	{
+	  pcrange->highpc = val->u.uint;
+	  pcrange->have_highpc = 1;
+	  pcrange->highpc_is_relative = 1;
+	}
+      else if (val->encoding == ATTR_VAL_ADDRESS_INDEX)
+	{
+	  pcrange->highpc = val->u.uint;
+	  pcrange->have_highpc = 1;
+	  pcrange->highpc_is_addr_index = 1;
+	}
+      break;
+
+    case DW_AT_ranges:
+      if (val->encoding == ATTR_VAL_UINT
+	  || val->encoding == ATTR_VAL_REF_SECTION)
+	{
+	  pcrange->ranges = val->u.uint;
+	  pcrange->have_ranges = 1;
+	}
+      else if (val->encoding == ATTR_VAL_RNGLISTS_INDEX)
+	{
+	  pcrange->ranges = val->u.uint;
+	  pcrange->have_ranges = 1;
+	  pcrange->ranges_is_index = 1;
+	}
+      break;
+
+    default:
+      break;
+    }
+}
+
+/* Call ADD_RANGE for a low/high PC pair.  Returns 1 on success, 0 on
+  error.  */
+
+static int
+add_low_high_range (struct backtrace_state *state,
+		    const struct dwarf_sections *dwarf_sections,
+		    uintptr_t base_address, int is_bigendian,
+		    struct unit *u, const struct pcrange *pcrange,
+		    int (*add_range) (struct backtrace_state *state,
+				      void *rdata, uint64_t lowpc,
+				      uint64_t highpc,
+				      backtrace_error_callback error_callback,
+				      void *data, void *vec),
+		    void *rdata,
+		    backtrace_error_callback error_callback, void *data,
+		    void *vec)
+{
+  uint64_t lowpc;
+  uint64_t highpc;
+
+  lowpc = pcrange->lowpc;
+  if (pcrange->lowpc_is_addr_index)
+    {
+      if (!resolve_addr_index (dwarf_sections, u->addr_base, u->addrsize,
+			       is_bigendian, lowpc, error_callback, data,
+			       &lowpc))
+	return 0;
+    }
+
+  highpc = pcrange->highpc;
+  if (pcrange->highpc_is_addr_index)
+    {
+      if (!resolve_addr_index (dwarf_sections, u->addr_base, u->addrsize,
+			       is_bigendian, highpc, error_callback, data,
+			       &highpc))
+	return 0;
+    }
+  if (pcrange->highpc_is_relative)
+    highpc += lowpc;
+
+  /* Add in the base address of the module when recording PC values,
+     so that we can look up the PC directly.  */
+  lowpc += base_address;
+  highpc += base_address;
+
+  return add_range (state, rdata, lowpc, highpc, error_callback, data, vec);
+}
+
+/* Call ADD_RANGE for each range read from .debug_ranges, as used in
+   DWARF versions 2 through 4.  */
+
+static int
+add_ranges_from_ranges (
+    struct backtrace_state *state,
+    const struct dwarf_sections *dwarf_sections,
+    uintptr_t base_address, int is_bigendian,
+    struct unit *u, uint64_t base,
+    const struct pcrange *pcrange,
+    int (*add_range) (struct backtrace_state *state, void *rdata,
+		      uint64_t lowpc, uint64_t highpc,
+		      backtrace_error_callback error_callback, void *data,
+		      void *vec),
+    void *rdata,
+    backtrace_error_callback error_callback, void *data,
+    void *vec)
+{
+  struct dwarf_buf ranges_buf;
+
+  if (pcrange->ranges >= dwarf_sections->size[DEBUG_RANGES])
+    {
+      error_callback (data, "ranges offset out of range", 0);
+      return 0;
+    }
+
+  ranges_buf.name = ".debug_ranges";
+  ranges_buf.start = dwarf_sections->data[DEBUG_RANGES];
+  ranges_buf.buf = dwarf_sections->data[DEBUG_RANGES] + pcrange->ranges;
+  ranges_buf.left = dwarf_sections->size[DEBUG_RANGES] - pcrange->ranges;
+  ranges_buf.is_bigendian = is_bigendian;
+  ranges_buf.error_callback = error_callback;
+  ranges_buf.data = data;
+  ranges_buf.reported_underflow = 0;
+
+  while (1)
+    {
+      uint64_t low;
+      uint64_t high;
+
+      if (ranges_buf.reported_underflow)
+	return 0;
+
+      low = read_address (&ranges_buf, u->addrsize);
+      high = read_address (&ranges_buf, u->addrsize);
+
+      if (low == 0 && high == 0)
+	break;
+
+      if (is_highest_address (low, u->addrsize))
+	base = high;
+      else
+	{
+	  if (!add_range (state, rdata, 
+			  low + base + base_address,
+			  high + base + base_address,
+			  error_callback, data, vec))
+	    return 0;
+	}
+    }
+
+  if (ranges_buf.reported_underflow)
+    return 0;
+
+  return 1;
+}
+
+/* Call ADD_RANGE for each range read from .debug_rnglists, as used in
+   DWARF version 5.  */
+
+static int
+add_ranges_from_rnglists (
+    struct backtrace_state *state,
+    const struct dwarf_sections *dwarf_sections,
+    uintptr_t base_address, int is_bigendian,
+    struct unit *u, uint64_t base,
+    const struct pcrange *pcrange,
+    int (*add_range) (struct backtrace_state *state, void *rdata,
+		      uint64_t lowpc, uint64_t highpc,
+		      backtrace_error_callback error_callback, void *data,
+		      void *vec),
+    void *rdata,
+    backtrace_error_callback error_callback, void *data,
+    void *vec)
+{
+  uint64_t offset;
+  struct dwarf_buf rnglists_buf;
+
+  if (!pcrange->ranges_is_index)
+    offset = pcrange->ranges;
+  else
+    offset = u->rnglists_base + pcrange->ranges * (u->is_dwarf64 ? 8 : 4);
+  if (offset >= dwarf_sections->size[DEBUG_RNGLISTS])
+    {
+      error_callback (data, "rnglists offset out of range", 0);
+      return 0;
+    }
+
+  rnglists_buf.name = ".debug_rnglists";
+  rnglists_buf.start = dwarf_sections->data[DEBUG_RNGLISTS];
+  rnglists_buf.buf = dwarf_sections->data[DEBUG_RNGLISTS] + offset;
+  rnglists_buf.left = dwarf_sections->size[DEBUG_RNGLISTS] - offset;
+  rnglists_buf.is_bigendian = is_bigendian;
+  rnglists_buf.error_callback = error_callback;
+  rnglists_buf.data = data;
+  rnglists_buf.reported_underflow = 0;
+
+  if (pcrange->ranges_is_index)
+    {
+      offset = read_offset (&rnglists_buf, u->is_dwarf64);
+      offset += u->rnglists_base;
+      if (offset >= dwarf_sections->size[DEBUG_RNGLISTS])
+	{
+	  error_callback (data, "rnglists index offset out of range", 0);
+	  return 0;
+	}
+      rnglists_buf.buf = dwarf_sections->data[DEBUG_RNGLISTS] + offset;
+      rnglists_buf.left = dwarf_sections->size[DEBUG_RNGLISTS] - offset;
+    }
+
+  while (1)
+    {
+      unsigned char rle;
+
+      rle = read_byte (&rnglists_buf);
+      if (rle == DW_RLE_end_of_list)
+	break;
+      switch (rle)
+	{
+	case DW_RLE_base_addressx:
+	  {
+	    uint64_t index;
+
+	    index = read_uleb128 (&rnglists_buf);
+	    if (!resolve_addr_index (dwarf_sections, u->addr_base,
+				     u->addrsize, is_bigendian, index,
+				     error_callback, data, &base))
+	      return 0;
+	  }
+	  break;
+
+	case DW_RLE_startx_endx:
+	  {
+	    uint64_t index;
+	    uint64_t low;
+	    uint64_t high;
+
+	    index = read_uleb128 (&rnglists_buf);
+	    if (!resolve_addr_index (dwarf_sections, u->addr_base,
+				     u->addrsize, is_bigendian, index,
+				     error_callback, data, &low))
+	      return 0;
+	    index = read_uleb128 (&rnglists_buf);
+	    if (!resolve_addr_index (dwarf_sections, u->addr_base,
+				     u->addrsize, is_bigendian, index,
+				     error_callback, data, &high))
+	      return 0;
+	    if (!add_range (state, rdata, low + base_address,
+			    high + base_address, error_callback, data,
+			    vec))
+	      return 0;
+	  }
+	  break;
+
+	case DW_RLE_startx_length:
+	  {
+	    uint64_t index;
+	    uint64_t low;
+	    uint64_t length;
+
+	    index = read_uleb128 (&rnglists_buf);
+	    if (!resolve_addr_index (dwarf_sections, u->addr_base,
+				     u->addrsize, is_bigendian, index,
+				     error_callback, data, &low))
+	      return 0;
+	    length = read_uleb128 (&rnglists_buf);
+	    low += base_address;
+	    if (!add_range (state, rdata, low, low + length,
+			    error_callback, data, vec))
+	      return 0;
+	  }
+	  break;
+
+	case DW_RLE_offset_pair:
+	  {
+	    uint64_t low;
+	    uint64_t high;
+
+	    low = read_uleb128 (&rnglists_buf);
+	    high = read_uleb128 (&rnglists_buf);
+	    if (!add_range (state, rdata, low + base + base_address,
+			    high + base + base_address,
+			    error_callback, data, vec))
+	      return 0;
+	  }
+	  break;
+
+	case DW_RLE_base_address:
+	  base = read_address (&rnglists_buf, u->addrsize);
+	  break;
+
+	case DW_RLE_start_end:
+	  {
+	    uint64_t low;
+	    uint64_t high;
+
+	    low = read_address (&rnglists_buf, u->addrsize);
+	    high = read_address (&rnglists_buf, u->addrsize);
+	    if (!add_range (state, rdata, low + base_address,
+			    high + base_address, error_callback, data,
+			    vec))
+	      return 0;
+	  }
+	  break;
+
+	case DW_RLE_start_length:
+	  {
+	    uint64_t low;
+	    uint64_t length;
+
+	    low = read_address (&rnglists_buf, u->addrsize);
+	    length = read_uleb128 (&rnglists_buf);
+	    low += base_address;
+	    if (!add_range (state, rdata, low, low + length,
+			    error_callback, data, vec))
+	      return 0;
+	  }
+	  break;
+
+	default:
+	  dwarf_buf_error (&rnglists_buf, "unrecognized DW_RLE value", -1);
+	  return 0;
+	}
+    }
+
+  if (rnglists_buf.reported_underflow)
+    return 0;
+
+  return 1;
+}
+
+/* Call ADD_RANGE for each lowpc/highpc pair in PCRANGE.  RDATA is
+   passed to ADD_RANGE, and is either a struct unit * or a struct
+   function *.  VEC is the vector we are adding ranges to, and is
+   either a struct unit_addrs_vector * or a struct function_vector *.
+   Returns 1 on success, 0 on error.  */
+
+static int
+add_ranges (struct backtrace_state *state,
+	    const struct dwarf_sections *dwarf_sections,
+	    uintptr_t base_address, int is_bigendian,
+	    struct unit *u, uint64_t base, const struct pcrange *pcrange,
+	    int (*add_range) (struct backtrace_state *state, void *rdata, 
+			      uint64_t lowpc, uint64_t highpc,
+			      backtrace_error_callback error_callback,
+			      void *data, void *vec),
+	    void *rdata,
+	    backtrace_error_callback error_callback, void *data,
+	    void *vec)
+{
+  if (pcrange->have_lowpc && pcrange->have_highpc)
+    return add_low_high_range (state, dwarf_sections, base_address,
+			       is_bigendian, u, pcrange, add_range, rdata,
+			       error_callback, data, vec);
+
+  if (!pcrange->have_ranges)
+    {
+      /* Did not find any address ranges to add.  */
+      return 1;
+    }
+
+  if (u->version < 5)
+    return add_ranges_from_ranges (state, dwarf_sections, base_address,
+				   is_bigendian, u, base, pcrange, add_range,
+				   rdata, error_callback, data, vec);
+  else
+    return add_ranges_from_rnglists (state, dwarf_sections, base_address,
+				     is_bigendian, u, base, pcrange, add_range,
+				     rdata, error_callback, data, vec);
+}
+
+/* Find the address range covered by a compilation unit, reading from
+   UNIT_BUF and adding values to U.  Returns 1 if all data could be
+   read, 0 if there is some error.  */
+
+static int
+find_address_ranges (struct backtrace_state *state, uintptr_t base_address,
+		     struct dwarf_buf *unit_buf,
+		     const struct dwarf_sections *dwarf_sections,
+		     int is_bigendian, struct dwarf_data *altlink,
+		     backtrace_error_callback error_callback, void *data,
+		     struct unit *u, struct unit_addrs_vector *addrs,
+		     enum dwarf_tag *unit_tag)
+{
+  while (unit_buf->left > 0)
+    {
+      uint64_t code;
+      const struct abbrev *abbrev;
+      struct pcrange pcrange;
+      struct attr_val name_val;
+      int have_name_val;
+      struct attr_val comp_dir_val;
+      int have_comp_dir_val;
+      size_t i;
+
+      code = read_uleb128 (unit_buf);
+      if (code == 0)
+	return 1;
+
+      abbrev = lookup_abbrev (&u->abbrevs, code, error_callback, data);
+      if (abbrev == NULL)
+	return 0;
+
+      if (unit_tag != NULL)
+	*unit_tag = abbrev->tag;
+
+      memset (&pcrange, 0, sizeof pcrange);
+      memset (&name_val, 0, sizeof name_val);
+      have_name_val = 0;
+      memset (&comp_dir_val, 0, sizeof comp_dir_val);
+      have_comp_dir_val = 0;
+      for (i = 0; i < abbrev->num_attrs; ++i)
+	{
+	  struct attr_val val;
+
+	  if (!read_attribute (abbrev->attrs[i].form, abbrev->attrs[i].val,
+			       unit_buf, u->is_dwarf64, u->version,
+			       u->addrsize, dwarf_sections, altlink, &val))
+	    return 0;
+
+	  switch (abbrev->attrs[i].name)
+	    {
+	    case DW_AT_low_pc: case DW_AT_high_pc: case DW_AT_ranges:
+	      update_pcrange (&abbrev->attrs[i], &val, &pcrange);
+	      break;
+
+	    case DW_AT_stmt_list:
+	      if ((abbrev->tag == DW_TAG_compile_unit
+		   || abbrev->tag == DW_TAG_skeleton_unit)
+		  && (val.encoding == ATTR_VAL_UINT
+		      || val.encoding == ATTR_VAL_REF_SECTION))
+		u->lineoff = val.u.uint;
+	      break;
+
+	    case DW_AT_name:
+	      if (abbrev->tag == DW_TAG_compile_unit
+		  || abbrev->tag == DW_TAG_skeleton_unit)
+		{
+		  name_val = val;
+		  have_name_val = 1;
+		}
+	      break;
+
+	    case DW_AT_comp_dir:
+	      if (abbrev->tag == DW_TAG_compile_unit
+		  || abbrev->tag == DW_TAG_skeleton_unit)
+		{
+		  comp_dir_val = val;
+		  have_comp_dir_val = 1;
+		}
+	      break;
+
+	    case DW_AT_str_offsets_base:
+	      if ((abbrev->tag == DW_TAG_compile_unit
+		   || abbrev->tag == DW_TAG_skeleton_unit)
+		  && val.encoding == ATTR_VAL_REF_SECTION)
+		u->str_offsets_base = val.u.uint;
+	      break;
+
+	    case DW_AT_addr_base:
+	      if ((abbrev->tag == DW_TAG_compile_unit
+		   || abbrev->tag == DW_TAG_skeleton_unit)
+		  && val.encoding == ATTR_VAL_REF_SECTION)
+		u->addr_base = val.u.uint;
+	      break;
+
+	    case DW_AT_rnglists_base:
+	      if ((abbrev->tag == DW_TAG_compile_unit
+		   || abbrev->tag == DW_TAG_skeleton_unit)
+		  && val.encoding == ATTR_VAL_REF_SECTION)
+		u->rnglists_base = val.u.uint;
+	      break;
+
+	    default:
+	      break;
+	    }
+	}
+
+      // Resolve strings after we're sure that we have seen
+      // DW_AT_str_offsets_base.
+      if (have_name_val)
+	{
+	  if (!resolve_string (dwarf_sections, u->is_dwarf64, is_bigendian,
+			       u->str_offsets_base, &name_val,
+			       error_callback, data, &u->filename))
+	    return 0;
+	}
+      if (have_comp_dir_val)
+	{
+	  if (!resolve_string (dwarf_sections, u->is_dwarf64, is_bigendian,
+			       u->str_offsets_base, &comp_dir_val,
+			       error_callback, data, &u->comp_dir))
+	    return 0;
+	}
+
+      if (abbrev->tag == DW_TAG_compile_unit
+	  || abbrev->tag == DW_TAG_subprogram
+	  || abbrev->tag == DW_TAG_skeleton_unit)
+	{
+	  if (!add_ranges (state, dwarf_sections, base_address,
+			   is_bigendian, u, pcrange.lowpc, &pcrange,
+			   add_unit_addr, (void *) u, error_callback, data,
+			   (void *) addrs))
+	    return 0;
+
+	  /* If we found the PC range in the DW_TAG_compile_unit or
+	     DW_TAG_skeleton_unit, we can stop now.  */
+	  if ((abbrev->tag == DW_TAG_compile_unit
+	       || abbrev->tag == DW_TAG_skeleton_unit)
+	      && (pcrange.have_ranges
+		  || (pcrange.have_lowpc && pcrange.have_highpc)))
+	    return 1;
+	}
+
+      if (abbrev->has_children)
+	{
+	  if (!find_address_ranges (state, base_address, unit_buf,
+				    dwarf_sections, is_bigendian, altlink,
+				    error_callback, data, u, addrs, NULL))
+	    return 0;
+	}
+    }
+
+  return 1;
+}
+
+/* Build a mapping from address ranges to the compilation units where
+   the line number information for that range can be found.  Returns 1
+   on success, 0 on failure.  */
+
+static int
+build_address_map (struct backtrace_state *state, uintptr_t base_address,
+		   const struct dwarf_sections *dwarf_sections,
+		   int is_bigendian, struct dwarf_data *altlink,
+		   backtrace_error_callback error_callback, void *data,
+		   struct unit_addrs_vector *addrs,
+		   struct unit_vector *unit_vec)
+{
+  struct dwarf_buf info;
+  struct backtrace_vector units;
+  size_t units_count;
+  size_t i;
+  struct unit **pu;
+  size_t unit_offset = 0;
+  struct unit_addrs *pa;
+
+  memset (&addrs->vec, 0, sizeof addrs->vec);
+  memset (&unit_vec->vec, 0, sizeof unit_vec->vec);
+  addrs->count = 0;
+  unit_vec->count = 0;
+
+  /* Read through the .debug_info section.  FIXME: Should we use the
+     .debug_aranges section?  gdb and addr2line don't use it, but I'm
+     not sure why.  */
+
+  info.name = ".debug_info";
+  info.start = dwarf_sections->data[DEBUG_INFO];
+  info.buf = info.start;
+  info.left = dwarf_sections->size[DEBUG_INFO];
+  info.is_bigendian = is_bigendian;
+  info.error_callback = error_callback;
+  info.data = data;
+  info.reported_underflow = 0;
+
+  memset (&units, 0, sizeof units);
+  units_count = 0;
+
+  while (info.left > 0)
+    {
+      const unsigned char *unit_data_start;
+      uint64_t len;
+      int is_dwarf64;
+      struct dwarf_buf unit_buf;
+      int version;
+      int unit_type;
+      uint64_t abbrev_offset;
+      int addrsize;
+      struct unit *u;
+      enum dwarf_tag unit_tag;
+
+      if (info.reported_underflow)
+	goto fail;
+
+      unit_data_start = info.buf;
+
+      len = read_initial_length (&info, &is_dwarf64);
+      unit_buf = info;
+      unit_buf.left = len;
+
+      if (!advance (&info, len))
+	goto fail;
+
+      version = read_uint16 (&unit_buf);
+      if (version < 2 || version > 5)
+	{
+	  dwarf_buf_error (&unit_buf, "unrecognized DWARF version", -1);
+	  goto fail;
+	}
+
+      if (version < 5)
+	unit_type = 0;
+      else
+	{
+	  unit_type = read_byte (&unit_buf);
+	  if (unit_type == DW_UT_type || unit_type == DW_UT_split_type)
+	    {
+	      /* This unit doesn't have anything we need.  */
+	      continue;
+	    }
+	}
+
+      pu = ((struct unit **)
+	    backtrace_vector_grow (state, sizeof (struct unit *),
+				   error_callback, data, &units));
+      if (pu == NULL)
+	  goto fail;
+
+      u = ((struct unit *)
+	   backtrace_alloc (state, sizeof *u, error_callback, data));
+      if (u == NULL)
+	goto fail;
+
+      *pu = u;
+      ++units_count;
+
+      if (version < 5)
+	addrsize = 0; /* Set below.  */
+      else
+	addrsize = read_byte (&unit_buf);
+
+      memset (&u->abbrevs, 0, sizeof u->abbrevs);
+      abbrev_offset = read_offset (&unit_buf, is_dwarf64);
+      if (!read_abbrevs (state, abbrev_offset,
+			 dwarf_sections->data[DEBUG_ABBREV],
+			 dwarf_sections->size[DEBUG_ABBREV],
+			 is_bigendian, error_callback, data, &u->abbrevs))
+	goto fail;
+
+      if (version < 5)
+	addrsize = read_byte (&unit_buf);
+
+      switch (unit_type)
+	{
+	case 0:
+	  break;
+	case DW_UT_compile: case DW_UT_partial:
+	  break;
+	case DW_UT_skeleton: case DW_UT_split_compile:
+	  read_uint64 (&unit_buf); /* dwo_id */
+	  break;
+	default:
+	  break;
+	}
+
+      u->low_offset = unit_offset;
+      unit_offset += len + (is_dwarf64 ? 12 : 4);
+      u->high_offset = unit_offset;
+      u->unit_data = unit_buf.buf;
+      u->unit_data_len = unit_buf.left;
+      u->unit_data_offset = unit_buf.buf - unit_data_start;
+      u->version = version;
+      u->is_dwarf64 = is_dwarf64;
+      u->addrsize = addrsize;
+      u->filename = NULL;
+      u->comp_dir = NULL;
+      u->abs_filename = NULL;
+      u->lineoff = 0;
+      u->str_offsets_base = 0;
+      u->addr_base = 0;
+      u->rnglists_base = 0;
+
+      /* The actual line number mappings will be read as needed.  */
+      u->lines = NULL;
+      u->lines_count = 0;
+      u->function_addrs = NULL;
+      u->function_addrs_count = 0;
+
+      if (!find_address_ranges (state, base_address, &unit_buf, dwarf_sections,
+				is_bigendian, altlink, error_callback, data,
+				u, addrs, &unit_tag))
+	goto fail;
+
+      if (unit_buf.reported_underflow)
+	goto fail;
+    }
+  if (info.reported_underflow)
+    goto fail;
+
+  /* Add a trailing addrs entry, but don't include it in addrs->count.  */
+  pa = ((struct unit_addrs *)
+	backtrace_vector_grow (state, sizeof (struct unit_addrs),
+			       error_callback, data, &addrs->vec));
+  if (pa == NULL)
+    goto fail;
+  pa->low = 0;
+  --pa->low;
+  pa->high = pa->low;
+  pa->u = NULL;
+
+  unit_vec->vec = units;
+  unit_vec->count = units_count;
+  return 1;
+
+ fail:
+  if (units_count > 0)
+    {
+      pu = (struct unit **) units.base;
+      for (i = 0; i < units_count; i++)
+	{
+	  free_abbrevs (state, &pu[i]->abbrevs, error_callback, data);
+	  backtrace_free (state, pu[i], sizeof **pu, error_callback, data);
+	}
+      backtrace_vector_free (state, &units, error_callback, data);
+    }
+  if (addrs->count > 0)
+    {
+      backtrace_vector_free (state, &addrs->vec, error_callback, data);
+      addrs->count = 0;
+    }
+  return 0;
+}
+
+/* Add a new mapping to the vector of line mappings that we are
+   building.  Returns 1 on success, 0 on failure.  */
+
+static int
+add_line (struct backtrace_state *state, struct dwarf_data *ddata,
+	  uintptr_t pc, const char *filename, int lineno,
+	  backtrace_error_callback error_callback, void *data,
+	  struct line_vector *vec)
+{
+  struct line *ln;
+
+  /* If we are adding the same mapping, ignore it.  This can happen
+     when using discriminators.  */
+  if (vec->count > 0)
+    {
+      ln = (struct line *) vec->vec.base + (vec->count - 1);
+      if (pc == ln->pc && filename == ln->filename && lineno == ln->lineno)
+	return 1;
+    }
+
+  ln = ((struct line *)
+	backtrace_vector_grow (state, sizeof (struct line), error_callback,
+			       data, &vec->vec));
+  if (ln == NULL)
+    return 0;
+
+  /* Add in the base address here, so that we can look up the PC
+     directly.  */
+  ln->pc = pc + ddata->base_address;
+
+  ln->filename = filename;
+  ln->lineno = lineno;
+  ln->idx = vec->count;
+
+  ++vec->count;
+
+  return 1;
+}
+
+/* Free the line header information.  */
+
+static void
+free_line_header (struct backtrace_state *state, struct line_header *hdr,
+		  backtrace_error_callback error_callback, void *data)
+{
+  if (hdr->dirs_count != 0)
+    backtrace_free (state, hdr->dirs, hdr->dirs_count * sizeof (const char *),
+		    error_callback, data);
+  backtrace_free (state, hdr->filenames,
+		  hdr->filenames_count * sizeof (char *),
+		  error_callback, data);
+}
+
+/* Read the directories and file names for a line header for version
+   2, setting fields in HDR.  Return 1 on success, 0 on failure.  */
+
+static int
+read_v2_paths (struct backtrace_state *state, struct unit *u,
+	       struct dwarf_buf *hdr_buf, struct line_header *hdr)
+{
+  const unsigned char *p;
+  const unsigned char *pend;
+  size_t i;
+
+  /* Count the number of directory entries.  */
+  hdr->dirs_count = 0;
+  p = hdr_buf->buf;
+  pend = p + hdr_buf->left;
+  while (p < pend && *p != '\0')
+    {
+      p += strnlen((const char *) p, pend - p) + 1;
+      ++hdr->dirs_count;
+    }
+
+  /* The index of the first entry in the list of directories is 1.  Index 0 is
+     used for the current directory of the compilation.  To simplify index
+     handling, we set entry 0 to the compilation unit directory.  */
+  ++hdr->dirs_count;
+  hdr->dirs = ((const char **)
+	       backtrace_alloc (state,
+				hdr->dirs_count * sizeof (const char *),
+				hdr_buf->error_callback,
+				hdr_buf->data));
+  if (hdr->dirs == NULL)
+    return 0;
+
+  hdr->dirs[0] = u->comp_dir;
+  i = 1;
+  while (*hdr_buf->buf != '\0')
+    {
+      if (hdr_buf->reported_underflow)
+	return 0;
+
+      hdr->dirs[i] = read_string (hdr_buf);
+      if (hdr->dirs[i] == NULL)
+	return 0;
+      ++i;
+    }
+  if (!advance (hdr_buf, 1))
+    return 0;
+
+  /* Count the number of file entries.  */
+  hdr->filenames_count = 0;
+  p = hdr_buf->buf;
+  pend = p + hdr_buf->left;
+  while (p < pend && *p != '\0')
+    {
+      p += strnlen ((const char *) p, pend - p) + 1;
+      p += leb128_len (p);
+      p += leb128_len (p);
+      p += leb128_len (p);
+      ++hdr->filenames_count;
+    }
+
+  /* The index of the first entry in the list of file names is 1.  Index 0 is
+     used for the DW_AT_name of the compilation unit.  To simplify index
+     handling, we set entry 0 to the compilation unit file name.  */
+  ++hdr->filenames_count;
+  hdr->filenames = ((const char **)
+		    backtrace_alloc (state,
+				     hdr->filenames_count * sizeof (char *),
+				     hdr_buf->error_callback,
+				     hdr_buf->data));
+  if (hdr->filenames == NULL)
+    return 0;
+  hdr->filenames[0] = u->filename;
+  i = 1;
+  while (*hdr_buf->buf != '\0')
+    {
+      const char *filename;
+      uint64_t dir_index;
+
+      if (hdr_buf->reported_underflow)
+	return 0;
+
+      filename = read_string (hdr_buf);
+      if (filename == NULL)
+	return 0;
+      dir_index = read_uleb128 (hdr_buf);
+      if (IS_ABSOLUTE_PATH (filename)
+	  || (dir_index < hdr->dirs_count && hdr->dirs[dir_index] == NULL))
+	hdr->filenames[i] = filename;
+      else
+	{
+	  const char *dir;
+	  size_t dir_len;
+	  size_t filename_len;
+	  char *s;
+
+	  if (dir_index < hdr->dirs_count)
+	    dir = hdr->dirs[dir_index];
+	  else
+	    {
+	      dwarf_buf_error (hdr_buf,
+			       ("invalid directory index in "
+				"line number program header"),
+			       0);
+	      return 0;
+	    }
+	  dir_len = strlen (dir);
+	  filename_len = strlen (filename);
+	  s = ((char *) backtrace_alloc (state, dir_len + filename_len + 2,
+					 hdr_buf->error_callback,
+					 hdr_buf->data));
+	  if (s == NULL)
+	    return 0;
+	  memcpy (s, dir, dir_len);
+	  /* FIXME: If we are on a DOS-based file system, and the
+	     directory or the file name use backslashes, then we
+	     should use a backslash here.  */
+	  s[dir_len] = '/';
+	  memcpy (s + dir_len + 1, filename, filename_len + 1);
+	  hdr->filenames[i] = s;
+	}
+
+      /* Ignore the modification time and size.  */
+      read_uleb128 (hdr_buf);
+      read_uleb128 (hdr_buf);
+
+      ++i;
+    }
+
+  return 1;
+}
+
+/* Read a single version 5 LNCT entry for a directory or file name in a
+   line header.  Sets *STRING to the resulting name, ignoring other
+   data.  Return 1 on success, 0 on failure.  */
+
+static int
+read_lnct (struct backtrace_state *state, struct dwarf_data *ddata,
+	   struct unit *u, struct dwarf_buf *hdr_buf,
+	   const struct line_header *hdr, size_t formats_count,
+	   const struct line_header_format *formats, const char **string)
+{
+  size_t i;
+  const char *dir;
+  const char *path;
+
+  dir = NULL;
+  path = NULL;
+  for (i = 0; i < formats_count; i++)
+    {
+      struct attr_val val;
+
+      if (!read_attribute (formats[i].form, 0, hdr_buf, u->is_dwarf64,
+			   u->version, hdr->addrsize, &ddata->dwarf_sections,
+			   ddata->altlink, &val))
+	return 0;
+      switch (formats[i].lnct)
+	{
+	case DW_LNCT_path:
+	  if (!resolve_string (&ddata->dwarf_sections, u->is_dwarf64,
+			       ddata->is_bigendian, u->str_offsets_base,
+			       &val, hdr_buf->error_callback, hdr_buf->data,
+			       &path))
+	    return 0;
+	  break;
+	case DW_LNCT_directory_index:
+	  if (val.encoding == ATTR_VAL_UINT)
+	    {
+	      if (val.u.uint >= hdr->dirs_count)
+		{
+		  dwarf_buf_error (hdr_buf,
+				   ("invalid directory index in "
+				    "line number program header"),
+				   0);
+		  return 0;
+		}
+	      dir = hdr->dirs[val.u.uint];
+	    }
+	  break;
+	default:
+	  /* We don't care about timestamps or sizes or hashes.  */
+	  break;
+	}
+    }
+
+  if (path == NULL)
+    {
+      dwarf_buf_error (hdr_buf,
+		       "missing file name in line number program header",
+		       0);
+      return 0;
+    }
+
+  if (dir == NULL)
+    *string = path;
+  else
+    {
+      size_t dir_len;
+      size_t path_len;
+      char *s;
+
+      dir_len = strlen (dir);
+      path_len = strlen (path);
+      s = (char *) backtrace_alloc (state, dir_len + path_len + 2,
+				    hdr_buf->error_callback, hdr_buf->data);
+      if (s == NULL)
+	return 0;
+      memcpy (s, dir, dir_len);
+      /* FIXME: If we are on a DOS-based file system, and the
+	 directory or the path name use backslashes, then we should
+	 use a backslash here.  */
+      s[dir_len] = '/';
+      memcpy (s + dir_len + 1, path, path_len + 1);
+      *string = s;
+    }
+
+  return 1;
+}
+
+/* Read a set of DWARF 5 line header format entries, setting *PCOUNT
+   and *PPATHS.  Return 1 on success, 0 on failure.  */
+
+static int
+read_line_header_format_entries (struct backtrace_state *state,
+				 struct dwarf_data *ddata,
+				 struct unit *u,
+				 struct dwarf_buf *hdr_buf,
+				 struct line_header *hdr,
+				 size_t *pcount,
+				 const char ***ppaths)
+{
+  size_t formats_count;
+  struct line_header_format *formats;
+  size_t paths_count;
+  const char **paths;
+  size_t i;
+  int ret;
+
+  formats_count = read_byte (hdr_buf);
+  if (formats_count == 0)
+    formats = NULL;
+  else
+    {
+      formats = ((struct line_header_format *)
+		 backtrace_alloc (state,
+				  (formats_count
+				   * sizeof (struct line_header_format)),
+				  hdr_buf->error_callback,
+				  hdr_buf->data));
+      if (formats == NULL)
+	return 0;
+
+      for (i = 0; i < formats_count; i++)
+	{
+	  formats[i].lnct = (int) read_uleb128(hdr_buf);
+	  formats[i].form = (enum dwarf_form) read_uleb128 (hdr_buf);
+	}
+    }
+
+  paths_count = read_uleb128 (hdr_buf);
+  if (paths_count == 0)
+    {
+      *pcount = 0;
+      *ppaths = NULL;
+      ret = 1;
+      goto exit;
+    }
+
+  paths = ((const char **)
+	   backtrace_alloc (state, paths_count * sizeof (const char *),
+			    hdr_buf->error_callback, hdr_buf->data));
+  if (paths == NULL)
+    {
+      ret = 0;
+      goto exit;
+    }
+  for (i = 0; i < paths_count; i++)
+    {
+      if (!read_lnct (state, ddata, u, hdr_buf, hdr, formats_count,
+		      formats, &paths[i]))
+	{
+	  backtrace_free (state, paths,
+			  paths_count * sizeof (const char *),
+			  hdr_buf->error_callback, hdr_buf->data);
+	  ret = 0;
+	  goto exit;
+	}
+    }
+
+  *pcount = paths_count;
+  *ppaths = paths;
+
+  ret = 1;
+
+ exit:
+  if (formats != NULL)
+    backtrace_free (state, formats,
+		    formats_count * sizeof (struct line_header_format),
+		    hdr_buf->error_callback, hdr_buf->data);
+
+  return  ret;
+}
+
+/* Read the line header.  Return 1 on success, 0 on failure.  */
+
+static int
+read_line_header (struct backtrace_state *state, struct dwarf_data *ddata,
+		  struct unit *u, int is_dwarf64, struct dwarf_buf *line_buf,
+		  struct line_header *hdr)
+{
+  uint64_t hdrlen;
+  struct dwarf_buf hdr_buf;
+
+  hdr->version = read_uint16 (line_buf);
+  if (hdr->version < 2 || hdr->version > 5)
+    {
+      dwarf_buf_error (line_buf, "unsupported line number version", -1);
+      return 0;
+    }
+
+  if (hdr->version < 5)
+    hdr->addrsize = u->addrsize;
+  else
+    {
+      hdr->addrsize = read_byte (line_buf);
+      /* We could support a non-zero segment_selector_size but I doubt
+	 we'll ever see it.  */
+      if (read_byte (line_buf) != 0)
+	{
+	  dwarf_buf_error (line_buf,
+			   "non-zero segment_selector_size not supported",
+			   -1);
+	  return 0;
+	}
+    }
+
+  hdrlen = read_offset (line_buf, is_dwarf64);
+
+  hdr_buf = *line_buf;
+  hdr_buf.left = hdrlen;
+
+  if (!advance (line_buf, hdrlen))
+    return 0;
+
+  hdr->min_insn_len = read_byte (&hdr_buf);
+  if (hdr->version < 4)
+    hdr->max_ops_per_insn = 1;
+  else
+    hdr->max_ops_per_insn = read_byte (&hdr_buf);
+
+  /* We don't care about default_is_stmt.  */
+  read_byte (&hdr_buf);
+
+  hdr->line_base = read_sbyte (&hdr_buf);
+  hdr->line_range = read_byte (&hdr_buf);
+
+  hdr->opcode_base = read_byte (&hdr_buf);
+  hdr->opcode_lengths = hdr_buf.buf;
+  if (!advance (&hdr_buf, hdr->opcode_base - 1))
+    return 0;
+
+  if (hdr->version < 5)
+    {
+      if (!read_v2_paths (state, u, &hdr_buf, hdr))
+	return 0;
+    }
+  else
+    {
+      if (!read_line_header_format_entries (state, ddata, u, &hdr_buf, hdr,
+					    &hdr->dirs_count,
+					    &hdr->dirs))
+	return 0;
+      if (!read_line_header_format_entries (state, ddata, u, &hdr_buf, hdr,
+					    &hdr->filenames_count,
+					    &hdr->filenames))
+	return 0;
+    }
+
+  if (hdr_buf.reported_underflow)
+    return 0;
+
+  return 1;
+}
+
+/* Read the line program, adding line mappings to VEC.  Return 1 on
+   success, 0 on failure.  */
+
+static int
+read_line_program (struct backtrace_state *state, struct dwarf_data *ddata,
+		   const struct line_header *hdr, struct dwarf_buf *line_buf,
+		   struct line_vector *vec)
+{
+  uint64_t address;
+  unsigned int op_index;
+  const char *reset_filename;
+  const char *filename;
+  int lineno;
+
+  address = 0;
+  op_index = 0;
+  if (hdr->filenames_count > 1)
+    reset_filename = hdr->filenames[1];
+  else
+    reset_filename = "";
+  filename = reset_filename;
+  lineno = 1;
+  while (line_buf->left > 0)
+    {
+      unsigned int op;
+
+      op = read_byte (line_buf);
+      if (op >= hdr->opcode_base)
+	{
+	  unsigned int advance;
+
+	  /* Special opcode.  */
+	  op -= hdr->opcode_base;
+	  advance = op / hdr->line_range;
+	  address += (hdr->min_insn_len * (op_index + advance)
+		      / hdr->max_ops_per_insn);
+	  op_index = (op_index + advance) % hdr->max_ops_per_insn;
+	  lineno += hdr->line_base + (int) (op % hdr->line_range);
+	  add_line (state, ddata, address, filename, lineno,
+		    line_buf->error_callback, line_buf->data, vec);
+	}
+      else if (op == DW_LNS_extended_op)
+	{
+	  uint64_t len;
+
+	  len = read_uleb128 (line_buf);
+	  op = read_byte (line_buf);
+	  switch (op)
+	    {
+	    case DW_LNE_end_sequence:
+	      /* FIXME: Should we mark the high PC here?  It seems
+		 that we already have that information from the
+		 compilation unit.  */
+	      address = 0;
+	      op_index = 0;
+	      filename = reset_filename;
+	      lineno = 1;
+	      break;
+	    case DW_LNE_set_address:
+	      address = read_address (line_buf, hdr->addrsize);
+	      break;
+	    case DW_LNE_define_file:
+	      {
+		const char *f;
+		unsigned int dir_index;
+
+		f = read_string (line_buf);
+		if (f == NULL)
+		  return 0;
+		dir_index = read_uleb128 (line_buf);
+		/* Ignore that time and length.  */
+		read_uleb128 (line_buf);
+		read_uleb128 (line_buf);
+		if (IS_ABSOLUTE_PATH (f))
+		  filename = f;
+		else
+		  {
+		    const char *dir;
+		    size_t dir_len;
+		    size_t f_len;
+		    char *p;
+
+		    if (dir_index < hdr->dirs_count)
+		      dir = hdr->dirs[dir_index];
+		    else
+		      {
+			dwarf_buf_error (line_buf,
+					 ("invalid directory index "
+					  "in line number program"),
+					 0);
+			return 0;
+		      }
+		    dir_len = strlen (dir);
+		    f_len = strlen (f);
+		    p = ((char *)
+			 backtrace_alloc (state, dir_len + f_len + 2,
+					  line_buf->error_callback,
+					  line_buf->data));
+		    if (p == NULL)
+		      return 0;
+		    memcpy (p, dir, dir_len);
+		    /* FIXME: If we are on a DOS-based file system,
+		       and the directory or the file name use
+		       backslashes, then we should use a backslash
+		       here.  */
+		    p[dir_len] = '/';
+		    memcpy (p + dir_len + 1, f, f_len + 1);
+		    filename = p;
+		  }
+	      }
+	      break;
+	    case DW_LNE_set_discriminator:
+	      /* We don't care about discriminators.  */
+	      read_uleb128 (line_buf);
+	      break;
+	    default:
+	      if (!advance (line_buf, len - 1))
+		return 0;
+	      break;
+	    }
+	}
+      else
+	{
+	  switch (op)
+	    {
+	    case DW_LNS_copy:
+	      add_line (state, ddata, address, filename, lineno,
+			line_buf->error_callback, line_buf->data, vec);
+	      break;
+	    case DW_LNS_advance_pc:
+	      {
+		uint64_t advance;
+
+		advance = read_uleb128 (line_buf);
+		address += (hdr->min_insn_len * (op_index + advance)
+			    / hdr->max_ops_per_insn);
+		op_index = (op_index + advance) % hdr->max_ops_per_insn;
+	      }
+	      break;
+	    case DW_LNS_advance_line:
+	      lineno += (int) read_sleb128 (line_buf);
+	      break;
+	    case DW_LNS_set_file:
+	      {
+		uint64_t fileno;
+
+		fileno = read_uleb128 (line_buf);
+		if (fileno >= hdr->filenames_count)
+		  {
+		    dwarf_buf_error (line_buf,
+				     ("invalid file number in "
+				      "line number program"),
+				     0);
+		    return 0;
+		  }
+		filename = hdr->filenames[fileno];
+	      }
+	      break;
+	    case DW_LNS_set_column:
+	      read_uleb128 (line_buf);
+	      break;
+	    case DW_LNS_negate_stmt:
+	      break;
+	    case DW_LNS_set_basic_block:
+	      break;
+	    case DW_LNS_const_add_pc:
+	      {
+		unsigned int advance;
+
+		op = 255 - hdr->opcode_base;
+		advance = op / hdr->line_range;
+		address += (hdr->min_insn_len * (op_index + advance)
+			    / hdr->max_ops_per_insn);
+		op_index = (op_index + advance) % hdr->max_ops_per_insn;
+	      }
+	      break;
+	    case DW_LNS_fixed_advance_pc:
+	      address += read_uint16 (line_buf);
+	      op_index = 0;
+	      break;
+	    case DW_LNS_set_prologue_end:
+	      break;
+	    case DW_LNS_set_epilogue_begin:
+	      break;
+	    case DW_LNS_set_isa:
+	      read_uleb128 (line_buf);
+	      break;
+	    default:
+	      {
+		unsigned int i;
+
+		for (i = hdr->opcode_lengths[op - 1]; i > 0; --i)
+		  read_uleb128 (line_buf);
+	      }
+	      break;
+	    }
+	}
+    }
+
+  return 1;
+}
+
+/* Read the line number information for a compilation unit.  Returns 1
+   on success, 0 on failure.  */
+
+static int
+read_line_info (struct backtrace_state *state, struct dwarf_data *ddata,
+		backtrace_error_callback error_callback, void *data,
+		struct unit *u, struct line_header *hdr, struct line **lines,
+		size_t *lines_count)
+{
+  struct line_vector vec;
+  struct dwarf_buf line_buf;
+  uint64_t len;
+  int is_dwarf64;
+  struct line *ln;
+
+  memset (&vec.vec, 0, sizeof vec.vec);
+  vec.count = 0;
+
+  memset (hdr, 0, sizeof *hdr);
+
+  if (u->lineoff != (off_t) (size_t) u->lineoff
+      || (size_t) u->lineoff >= ddata->dwarf_sections.size[DEBUG_LINE])
+    {
+      error_callback (data, "unit line offset out of range", 0);
+      goto fail;
+    }
+
+  line_buf.name = ".debug_line";
+  line_buf.start = ddata->dwarf_sections.data[DEBUG_LINE];
+  line_buf.buf = ddata->dwarf_sections.data[DEBUG_LINE] + u->lineoff;
+  line_buf.left = ddata->dwarf_sections.size[DEBUG_LINE] - u->lineoff;
+  line_buf.is_bigendian = ddata->is_bigendian;
+  line_buf.error_callback = error_callback;
+  line_buf.data = data;
+  line_buf.reported_underflow = 0;
+
+  len = read_initial_length (&line_buf, &is_dwarf64);
+  line_buf.left = len;
+
+  if (!read_line_header (state, ddata, u, is_dwarf64, &line_buf, hdr))
+    goto fail;
+
+  if (!read_line_program (state, ddata, hdr, &line_buf, &vec))
+    goto fail;
+
+  if (line_buf.reported_underflow)
+    goto fail;
+
+  if (vec.count == 0)
+    {
+      /* This is not a failure in the sense of a generating an error,
+	 but it is a failure in that sense that we have no useful
+	 information.  */
+      goto fail;
+    }
+
+  /* Allocate one extra entry at the end.  */
+  ln = ((struct line *)
+	backtrace_vector_grow (state, sizeof (struct line), error_callback,
+			       data, &vec.vec));
+  if (ln == NULL)
+    goto fail;
+  ln->pc = (uintptr_t) -1;
+  ln->filename = NULL;
+  ln->lineno = 0;
+  ln->idx = 0;
+
+  if (!backtrace_vector_release (state, &vec.vec, error_callback, data))
+    goto fail;
+
+  ln = (struct line *) vec.vec.base;
+  backtrace_qsort (ln, vec.count, sizeof (struct line), line_compare);
+
+  *lines = ln;
+  *lines_count = vec.count;
+
+  return 1;
+
+ fail:
+  backtrace_vector_free (state, &vec.vec, error_callback, data);
+  free_line_header (state, hdr, error_callback, data);
+  *lines = (struct line *) (uintptr_t) -1;
+  *lines_count = 0;
+  return 0;
+}
+
+static const char *read_referenced_name (struct dwarf_data *, struct unit *,
+					 uint64_t, backtrace_error_callback,
+					 void *);
+
+/* Read the name of a function from a DIE referenced by ATTR with VAL.  */
+
+static const char *
+read_referenced_name_from_attr (struct dwarf_data *ddata, struct unit *u,
+				struct attr *attr, struct attr_val *val,
+				backtrace_error_callback error_callback,
+				void *data)
+{
+  switch (attr->name)
+    {
+    case DW_AT_abstract_origin:
+    case DW_AT_specification:
+      break;
+    default:
+      return NULL;
+    }
+
+  if (attr->form == DW_FORM_ref_sig8)
+    return NULL;
+
+  if (val->encoding == ATTR_VAL_REF_INFO)
+    {
+      struct unit *unit
+	= find_unit (ddata->units, ddata->units_count,
+		     val->u.uint);
+      if (unit == NULL)
+	return NULL;
+
+      uint64_t offset = val->u.uint - unit->low_offset;
+      return read_referenced_name (ddata, unit, offset, error_callback, data);
+    }
+
+  if (val->encoding == ATTR_VAL_UINT
+      || val->encoding == ATTR_VAL_REF_UNIT)
+    return read_referenced_name (ddata, u, val->u.uint, error_callback, data);
+
+  if (val->encoding == ATTR_VAL_REF_ALT_INFO)
+    {
+      struct unit *alt_unit
+	= find_unit (ddata->altlink->units, ddata->altlink->units_count,
+		     val->u.uint);
+      if (alt_unit == NULL)
+	return NULL;
+
+      uint64_t offset = val->u.uint - alt_unit->low_offset;
+      return read_referenced_name (ddata->altlink, alt_unit, offset,
+				   error_callback, data);
+    }
+
+  return NULL;
+}
+
+/* Read the name of a function from a DIE referenced by a
+   DW_AT_abstract_origin or DW_AT_specification tag.  OFFSET is within
+   the same compilation unit.  */
+
+static const char *
+read_referenced_name (struct dwarf_data *ddata, struct unit *u,
+		      uint64_t offset, backtrace_error_callback error_callback,
+		      void *data)
+{
+  struct dwarf_buf unit_buf;
+  uint64_t code;
+  const struct abbrev *abbrev;
+  const char *ret;
+  size_t i;
+
+  /* OFFSET is from the start of the data for this compilation unit.
+     U->unit_data is the data, but it starts U->unit_data_offset bytes
+     from the beginning.  */
+
+  if (offset < u->unit_data_offset
+      || offset - u->unit_data_offset >= u->unit_data_len)
+    {
+      error_callback (data,
+		      "abstract origin or specification out of range",
+		      0);
+      return NULL;
+    }
+
+  offset -= u->unit_data_offset;
+
+  unit_buf.name = ".debug_info";
+  unit_buf.start = ddata->dwarf_sections.data[DEBUG_INFO];
+  unit_buf.buf = u->unit_data + offset;
+  unit_buf.left = u->unit_data_len - offset;
+  unit_buf.is_bigendian = ddata->is_bigendian;
+  unit_buf.error_callback = error_callback;
+  unit_buf.data = data;
+  unit_buf.reported_underflow = 0;
+
+  code = read_uleb128 (&unit_buf);
+  if (code == 0)
+    {
+      dwarf_buf_error (&unit_buf,
+		       "invalid abstract origin or specification",
+		       0);
+      return NULL;
+    }
+
+  abbrev = lookup_abbrev (&u->abbrevs, code, error_callback, data);
+  if (abbrev == NULL)
+    return NULL;
+
+  ret = NULL;
+  for (i = 0; i < abbrev->num_attrs; ++i)
+    {
+      struct attr_val val;
+
+      if (!read_attribute (abbrev->attrs[i].form, abbrev->attrs[i].val,
+			   &unit_buf, u->is_dwarf64, u->version, u->addrsize,
+			   &ddata->dwarf_sections, ddata->altlink, &val))
+	return NULL;
+
+      switch (abbrev->attrs[i].name)
+	{
+	case DW_AT_name:
+	  /* Third name preference: don't override.  A name we found in some
+	     other way, will normally be more useful -- e.g., this name is
+	     normally not mangled.  */
+	  if (ret != NULL)
+	    break;
+	  if (!resolve_string (&ddata->dwarf_sections, u->is_dwarf64,
+			       ddata->is_bigendian, u->str_offsets_base,
+			       &val, error_callback, data, &ret))
+	    return NULL;
+	  break;
+
+	case DW_AT_linkage_name:
+	case DW_AT_MIPS_linkage_name:
+	  /* First name preference: override all.  */
+	  {
+	    const char *s;
+
+	    s = NULL;
+	    if (!resolve_string (&ddata->dwarf_sections, u->is_dwarf64,
+				 ddata->is_bigendian, u->str_offsets_base,
+				 &val, error_callback, data, &s))
+	      return NULL;
+	    if (s != NULL)
+	      return s;
+	  }
+	  break;
+
+	case DW_AT_specification:
+	  /* Second name preference: override DW_AT_name, don't override
+	     DW_AT_linkage_name.  */
+	  {
+	    const char *name;
+
+	    name = read_referenced_name_from_attr (ddata, u, &abbrev->attrs[i],
+						   &val, error_callback, data);
+	    if (name != NULL)
+	      ret = name;
+	  }
+	  break;
+
+	default:
+	  break;
+	}
+    }
+
+  return ret;
+}
+
+/* Add a range to a unit that maps to a function.  This is called via
+   add_ranges.  Returns 1 on success, 0 on error.  */
+
+static int
+add_function_range (struct backtrace_state *state, void *rdata,
+		    uint64_t lowpc, uint64_t highpc,
+		    backtrace_error_callback error_callback, void *data,
+		    void *pvec)
+{
+  struct function *function = (struct function *) rdata;
+  struct function_vector *vec = (struct function_vector *) pvec;
+  struct function_addrs *p;
+
+  if (vec->count > 0)
+    {
+      p = (struct function_addrs *) vec->vec.base + (vec->count - 1);
+      if ((lowpc == p->high || lowpc == p->high + 1)
+	  && function == p->function)
+	{
+	  if (highpc > p->high)
+	    p->high = highpc;
+	  return 1;
+	}
+    }
+
+  p = ((struct function_addrs *)
+       backtrace_vector_grow (state, sizeof (struct function_addrs),
+			      error_callback, data, &vec->vec));
+  if (p == NULL)
+    return 0;
+
+  p->low = lowpc;
+  p->high = highpc;
+  p->function = function;
+
+  ++vec->count;
+
+  return 1;
+}
+
+/* Read one entry plus all its children.  Add function addresses to
+   VEC.  Returns 1 on success, 0 on error.  */
+
+static int
+read_function_entry (struct backtrace_state *state, struct dwarf_data *ddata,
+		     struct unit *u, uint64_t base, struct dwarf_buf *unit_buf,
+		     const struct line_header *lhdr,
+		     backtrace_error_callback error_callback, void *data,
+		     struct function_vector *vec_function,
+		     struct function_vector *vec_inlined)
+{
+  while (unit_buf->left > 0)
+    {
+      uint64_t code;
+      const struct abbrev *abbrev;
+      int is_function;
+      struct function *function;
+      struct function_vector *vec;
+      size_t i;
+      struct pcrange pcrange;
+      int have_linkage_name;
+
+      code = read_uleb128 (unit_buf);
+      if (code == 0)
+	return 1;
+
+      abbrev = lookup_abbrev (&u->abbrevs, code, error_callback, data);
+      if (abbrev == NULL)
+	return 0;
+
+      is_function = (abbrev->tag == DW_TAG_subprogram
+		     || abbrev->tag == DW_TAG_entry_point
+		     || abbrev->tag == DW_TAG_inlined_subroutine);
+
+      if (abbrev->tag == DW_TAG_inlined_subroutine)
+	vec = vec_inlined;
+      else
+	vec = vec_function;
+
+      function = NULL;
+      if (is_function)
+	{
+	  function = ((struct function *)
+		      backtrace_alloc (state, sizeof *function,
+				       error_callback, data));
+	  if (function == NULL)
+	    return 0;
+	  memset (function, 0, sizeof *function);
+	}
+
+      memset (&pcrange, 0, sizeof pcrange);
+      have_linkage_name = 0;
+      for (i = 0; i < abbrev->num_attrs; ++i)
+	{
+	  struct attr_val val;
+
+	  if (!read_attribute (abbrev->attrs[i].form, abbrev->attrs[i].val,
+			       unit_buf, u->is_dwarf64, u->version,
+			       u->addrsize, &ddata->dwarf_sections,
+			       ddata->altlink, &val))
+	    return 0;
+
+	  /* The compile unit sets the base address for any address
+	     ranges in the function entries.  */
+	  if ((abbrev->tag == DW_TAG_compile_unit
+	       || abbrev->tag == DW_TAG_skeleton_unit)
+	      && abbrev->attrs[i].name == DW_AT_low_pc)
+	    {
+	      if (val.encoding == ATTR_VAL_ADDRESS)
+		base = val.u.uint;
+	      else if (val.encoding == ATTR_VAL_ADDRESS_INDEX)
+		{
+		  if (!resolve_addr_index (&ddata->dwarf_sections,
+					   u->addr_base, u->addrsize,
+					   ddata->is_bigendian, val.u.uint,
+					   error_callback, data, &base))
+		    return 0;
+		}
+	    }
+
+	  if (is_function)
+	    {
+	      switch (abbrev->attrs[i].name)
+		{
+		case DW_AT_call_file:
+		  if (val.encoding == ATTR_VAL_UINT)
+		    {
+		      if (val.u.uint >= lhdr->filenames_count)
+			{
+			  dwarf_buf_error (unit_buf,
+					   ("invalid file number in "
+					    "DW_AT_call_file attribute"),
+					   0);
+			  return 0;
+			}
+		      function->caller_filename = lhdr->filenames[val.u.uint];
+		    }
+		  break;
+
+		case DW_AT_call_line:
+		  if (val.encoding == ATTR_VAL_UINT)
+		    function->caller_lineno = val.u.uint;
+		  break;
+
+		case DW_AT_abstract_origin:
+		case DW_AT_specification:
+		  /* Second name preference: override DW_AT_name, don't override
+		     DW_AT_linkage_name.  */
+		  if (have_linkage_name)
+		    break;
+		  {
+		    const char *name;
+
+		    name
+		      = read_referenced_name_from_attr (ddata, u,
+							&abbrev->attrs[i], &val,
+							error_callback, data);
+		    if (name != NULL)
+		      function->name = name;
+		  }
+		  break;
+
+		case DW_AT_name:
+		  /* Third name preference: don't override.  */
+		  if (function->name != NULL)
+		    break;
+		  if (!resolve_string (&ddata->dwarf_sections, u->is_dwarf64,
+				       ddata->is_bigendian,
+				       u->str_offsets_base, &val,
+				       error_callback, data, &function->name))
+		    return 0;
+		  break;
+
+		case DW_AT_linkage_name:
+		case DW_AT_MIPS_linkage_name:
+		  /* First name preference: override all.  */
+		  {
+		    const char *s;
+
+		    s = NULL;
+		    if (!resolve_string (&ddata->dwarf_sections, u->is_dwarf64,
+					 ddata->is_bigendian,
+					 u->str_offsets_base, &val,
+					 error_callback, data, &s))
+		      return 0;
+		    if (s != NULL)
+		      {
+			function->name = s;
+			have_linkage_name = 1;
+		      }
+		  }
+		  break;
+
+		case DW_AT_low_pc: case DW_AT_high_pc: case DW_AT_ranges:
+		  update_pcrange (&abbrev->attrs[i], &val, &pcrange);
+		  break;
+
+		default:
+		  break;
+		}
+	    }
+	}
+
+      /* If we couldn't find a name for the function, we have no use
+	 for it.  */
+      if (is_function && function->name == NULL)
+	{
+	  backtrace_free (state, function, sizeof *function,
+			  error_callback, data);
+	  is_function = 0;
+	}
+
+      if (is_function)
+	{
+	  if (pcrange.have_ranges
+	      || (pcrange.have_lowpc && pcrange.have_highpc))
+	    {
+	      if (!add_ranges (state, &ddata->dwarf_sections,
+			       ddata->base_address, ddata->is_bigendian,
+			       u, base, &pcrange, add_function_range,
+			       (void *) function, error_callback, data,
+			       (void *) vec))
+		return 0;
+	    }
+	  else
+	    {
+	      backtrace_free (state, function, sizeof *function,
+			      error_callback, data);
+	      is_function = 0;
+	    }
+	}
+
+      if (abbrev->has_children)
+	{
+	  if (!is_function)
+	    {
+	      if (!read_function_entry (state, ddata, u, base, unit_buf, lhdr,
+					error_callback, data, vec_function,
+					vec_inlined))
+		return 0;
+	    }
+	  else
+	    {
+	      struct function_vector fvec;
+
+	      /* Gather any information for inlined functions in
+		 FVEC.  */
+
+	      memset (&fvec, 0, sizeof fvec);
+
+	      if (!read_function_entry (state, ddata, u, base, unit_buf, lhdr,
+					error_callback, data, vec_function,
+					&fvec))
+		return 0;
+
+	      if (fvec.count > 0)
+		{
+		  struct function_addrs *p;
+		  struct function_addrs *faddrs;
+
+		  /* Allocate a trailing entry, but don't include it
+		     in fvec.count.  */
+		  p = ((struct function_addrs *)
+		       backtrace_vector_grow (state,
+					      sizeof (struct function_addrs),
+					      error_callback, data,
+					      &fvec.vec));
+		  if (p == NULL)
+		    return 0;
+		  p->low = 0;
+		  --p->low;
+		  p->high = p->low;
+		  p->function = NULL;
+
+		  if (!backtrace_vector_release (state, &fvec.vec,
+						 error_callback, data))
+		    return 0;
+
+		  faddrs = (struct function_addrs *) fvec.vec.base;
+		  backtrace_qsort (faddrs, fvec.count,
+				   sizeof (struct function_addrs),
+				   function_addrs_compare);
+
+		  function->function_addrs = faddrs;
+		  function->function_addrs_count = fvec.count;
+		}
+	    }
+	}
+    }
+
+  return 1;
+}
+
+/* Read function name information for a compilation unit.  We look
+   through the whole unit looking for function tags.  */
+
+static void
+read_function_info (struct backtrace_state *state, struct dwarf_data *ddata,
+		    const struct line_header *lhdr,
+		    backtrace_error_callback error_callback, void *data,
+		    struct unit *u, struct function_vector *fvec,
+		    struct function_addrs **ret_addrs,
+		    size_t *ret_addrs_count)
+{
+  struct function_vector lvec;
+  struct function_vector *pfvec;
+  struct dwarf_buf unit_buf;
+  struct function_addrs *p;
+  struct function_addrs *addrs;
+  size_t addrs_count;
+
+  /* Use FVEC if it is not NULL.  Otherwise use our own vector.  */
+  if (fvec != NULL)
+    pfvec = fvec;
+  else
+    {
+      memset (&lvec, 0, sizeof lvec);
+      pfvec = &lvec;
+    }
+
+  unit_buf.name = ".debug_info";
+  unit_buf.start = ddata->dwarf_sections.data[DEBUG_INFO];
+  unit_buf.buf = u->unit_data;
+  unit_buf.left = u->unit_data_len;
+  unit_buf.is_bigendian = ddata->is_bigendian;
+  unit_buf.error_callback = error_callback;
+  unit_buf.data = data;
+  unit_buf.reported_underflow = 0;
+
+  while (unit_buf.left > 0)
+    {
+      if (!read_function_entry (state, ddata, u, 0, &unit_buf, lhdr,
+				error_callback, data, pfvec, pfvec))
+	return;
+    }
+
+  if (pfvec->count == 0)
+    return;
+
+  /* Allocate a trailing entry, but don't include it in
+     pfvec->count.  */
+  p = ((struct function_addrs *)
+       backtrace_vector_grow (state, sizeof (struct function_addrs),
+			      error_callback, data, &pfvec->vec));
+  if (p == NULL)
+    return;
+  p->low = 0;
+  --p->low;
+  p->high = p->low;
+  p->function = NULL;
+
+  addrs_count = pfvec->count;
+
+  if (fvec == NULL)
+    {
+      if (!backtrace_vector_release (state, &lvec.vec, error_callback, data))
+	return;
+      addrs = (struct function_addrs *) pfvec->vec.base;
+    }
+  else
+    {
+      /* Finish this list of addresses, but leave the remaining space in
+	 the vector available for the next function unit.  */
+      addrs = ((struct function_addrs *)
+	       backtrace_vector_finish (state, &fvec->vec,
+					error_callback, data));
+      if (addrs == NULL)
+	return;
+      fvec->count = 0;
+    }
+
+  backtrace_qsort (addrs, addrs_count, sizeof (struct function_addrs),
+		   function_addrs_compare);
+
+  *ret_addrs = addrs;
+  *ret_addrs_count = addrs_count;
+}
+
+/* See if PC is inlined in FUNCTION.  If it is, print out the inlined
+   information, and update FILENAME and LINENO for the caller.
+   Returns whatever CALLBACK returns, or 0 to keep going.  */
+
+static int
+report_inlined_functions (uintptr_t pc, struct function *function,
+			  backtrace_full_callback callback, void *data,
+			  const char **filename, int *lineno)
+{
+  struct function_addrs *p;
+  struct function_addrs *match;
+  struct function *inlined;
+  int ret;
+
+  if (function->function_addrs_count == 0)
+    return 0;
+
+  /* Our search isn't safe if pc == -1, as that is the sentinel
+     value.  */
+  if (pc + 1 == 0)
+    return 0;
+
+  p = ((struct function_addrs *)
+       bsearch (&pc, function->function_addrs,
+		function->function_addrs_count,
+		sizeof (struct function_addrs),
+		function_addrs_search));
+  if (p == NULL)
+    return 0;
+
+  /* Here pc >= p->low && pc < (p + 1)->low.  The function_addrs are
+     sorted by low, so if pc > p->low we are at the end of a range of
+     function_addrs with the same low value.  If pc == p->low walk
+     forward to the end of the range with that low value.  Then walk
+     backward and use the first range that includes pc.  */
+  while (pc == (p + 1)->low)
+    ++p;
+  match = NULL;
+  while (1)
+    {
+      if (pc < p->high)
+	{
+	  match = p;
+	  break;
+	}
+      if (p == function->function_addrs)
+	break;
+      if ((p - 1)->low < p->low)
+	break;
+      --p;
+    }
+  if (match == NULL)
+    return 0;
+
+  /* We found an inlined call.  */
+
+  inlined = match->function;
+
+  /* Report any calls inlined into this one.  */
+  ret = report_inlined_functions (pc, inlined, callback, data,
+				  filename, lineno);
+  if (ret != 0)
+    return ret;
+
+  /* Report this inlined call.  */
+  ret = callback (data, pc, *filename, *lineno, inlined->name);
+  if (ret != 0)
+    return ret;
+
+  /* Our caller will report the caller of the inlined function; tell
+     it the appropriate filename and line number.  */
+  *filename = inlined->caller_filename;
+  *lineno = inlined->caller_lineno;
+
+  return 0;
+}
+
+/* Look for a PC in the DWARF mapping for one module.  On success,
+   call CALLBACK and return whatever it returns.  On error, call
+   ERROR_CALLBACK and return 0.  Sets *FOUND to 1 if the PC is found,
+   0 if not.  */
+
+static int
+dwarf_lookup_pc (struct backtrace_state *state, struct dwarf_data *ddata,
+		 uintptr_t pc, backtrace_full_callback callback,
+		 backtrace_error_callback error_callback, void *data,
+		 int *found)
+{
+  struct unit_addrs *entry;
+  int found_entry;
+  struct unit *u;
+  int new_data;
+  struct line *lines;
+  struct line *ln;
+  struct function_addrs *p;
+  struct function_addrs *fmatch;
+  struct function *function;
+  const char *filename;
+  int lineno;
+  int ret;
+
+  *found = 1;
+
+  /* Find an address range that includes PC.  Our search isn't safe if
+     PC == -1, as we use that as a sentinel value, so skip the search
+     in that case.  */
+  entry = (ddata->addrs_count == 0 || pc + 1 == 0
+	   ? NULL
+	   : bsearch (&pc, ddata->addrs, ddata->addrs_count,
+		      sizeof (struct unit_addrs), unit_addrs_search));
+
+  if (entry == NULL)
+    {
+      *found = 0;
+      return 0;
+    }
+
+  /* Here pc >= entry->low && pc < (entry + 1)->low.  The unit_addrs
+     are sorted by low, so if pc > p->low we are at the end of a range
+     of unit_addrs with the same low value.  If pc == p->low walk
+     forward to the end of the range with that low value.  Then walk
+     backward and use the first range that includes pc.  */
+  while (pc == (entry + 1)->low)
+    ++entry;
+  found_entry = 0;
+  while (1)
+    {
+      if (pc < entry->high)
+	{
+	  found_entry = 1;
+	  break;
+	}
+      if (entry == ddata->addrs)
+	break;
+      if ((entry - 1)->low < entry->low)
+	break;
+      --entry;
+    }
+  if (!found_entry)
+    {
+      *found = 0;
+      return 0;
+    }
+
+  /* We need the lines, lines_count, function_addrs,
+     function_addrs_count fields of u.  If they are not set, we need
+     to set them.  When running in threaded mode, we need to allow for
+     the possibility that some other thread is setting them
+     simultaneously.  */
+
+  u = entry->u;
+  lines = u->lines;
+
+  /* Skip units with no useful line number information by walking
+     backward.  Useless line number information is marked by setting
+     lines == -1.  */
+  while (entry > ddata->addrs
+	 && pc >= (entry - 1)->low
+	 && pc < (entry - 1)->high)
+    {
+      if (state->threaded)
+	lines = (struct line *) backtrace_atomic_load_pointer (&u->lines);
+
+      if (lines != (struct line *) (uintptr_t) -1)
+	break;
+
+      --entry;
+
+      u = entry->u;
+      lines = u->lines;
+    }
+
+  if (state->threaded)
+    lines = backtrace_atomic_load_pointer (&u->lines);
+
+  new_data = 0;
+  if (lines == NULL)
+    {
+      struct function_addrs *function_addrs;
+      size_t function_addrs_count;
+      struct line_header lhdr;
+      size_t count;
+
+      /* We have never read the line information for this unit.  Read
+	 it now.  */
+
+      function_addrs = NULL;
+      function_addrs_count = 0;
+      if (read_line_info (state, ddata, error_callback, data, entry->u, &lhdr,
+			  &lines, &count))
+	{
+	  struct function_vector *pfvec;
+
+	  /* If not threaded, reuse DDATA->FVEC for better memory
+	     consumption.  */
+	  if (state->threaded)
+	    pfvec = NULL;
+	  else
+	    pfvec = &ddata->fvec;
+	  read_function_info (state, ddata, &lhdr, error_callback, data,
+			      entry->u, pfvec, &function_addrs,
+			      &function_addrs_count);
+	  free_line_header (state, &lhdr, error_callback, data);
+	  new_data = 1;
+	}
+
+      /* Atomically store the information we just read into the unit.
+	 If another thread is simultaneously writing, it presumably
+	 read the same information, and we don't care which one we
+	 wind up with; we just leak the other one.  We do have to
+	 write the lines field last, so that the acquire-loads above
+	 ensure that the other fields are set.  */
+
+      if (!state->threaded)
+	{
+	  u->lines_count = count;
+	  u->function_addrs = function_addrs;
+	  u->function_addrs_count = function_addrs_count;
+	  u->lines = lines;
+	}
+      else
+	{
+	  backtrace_atomic_store_size_t (&u->lines_count, count);
+	  backtrace_atomic_store_pointer (&u->function_addrs, function_addrs);
+	  backtrace_atomic_store_size_t (&u->function_addrs_count,
+					 function_addrs_count);
+	  backtrace_atomic_store_pointer (&u->lines, lines);
+	}
+    }
+
+  /* Now all fields of U have been initialized.  */
+
+  if (lines == (struct line *) (uintptr_t) -1)
+    {
+      /* If reading the line number information failed in some way,
+	 try again to see if there is a better compilation unit for
+	 this PC.  */
+      if (new_data)
+	return dwarf_lookup_pc (state, ddata, pc, callback, error_callback,
+				data, found);
+      return callback (data, pc, NULL, 0, NULL);
+    }
+
+  /* Search for PC within this unit.  */
+
+  ln = (struct line *) bsearch (&pc, lines, entry->u->lines_count,
+				sizeof (struct line), line_search);
+  if (ln == NULL)
+    {
+      /* The PC is between the low_pc and high_pc attributes of the
+	 compilation unit, but no entry in the line table covers it.
+	 This implies that the start of the compilation unit has no
+	 line number information.  */
+
+      if (entry->u->abs_filename == NULL)
+	{
+	  const char *filename;
+
+	  filename = entry->u->filename;
+	  if (filename != NULL
+	      && !IS_ABSOLUTE_PATH (filename)
+	      && entry->u->comp_dir != NULL)
+	    {
+	      size_t filename_len;
+	      const char *dir;
+	      size_t dir_len;
+	      char *s;
+
+	      filename_len = strlen (filename);
+	      dir = entry->u->comp_dir;
+	      dir_len = strlen (dir);
+	      s = (char *) backtrace_alloc (state, dir_len + filename_len + 2,
+					    error_callback, data);
+	      if (s == NULL)
+		{
+		  *found = 0;
+		  return 0;
+		}
+	      memcpy (s, dir, dir_len);
+	      /* FIXME: Should use backslash if DOS file system.  */
+	      s[dir_len] = '/';
+	      memcpy (s + dir_len + 1, filename, filename_len + 1);
+	      filename = s;
+	    }
+	  entry->u->abs_filename = filename;
+	}
+
+      return callback (data, pc, entry->u->abs_filename, 0, NULL);
+    }
+
+  /* Search for function name within this unit.  */
+
+  if (entry->u->function_addrs_count == 0)
+    return callback (data, pc, ln->filename, ln->lineno, NULL);
+
+  p = ((struct function_addrs *)
+       bsearch (&pc, entry->u->function_addrs,
+		entry->u->function_addrs_count,
+		sizeof (struct function_addrs),
+		function_addrs_search));
+  if (p == NULL)
+    return callback (data, pc, ln->filename, ln->lineno, NULL);
+
+  /* Here pc >= p->low && pc < (p + 1)->low.  The function_addrs are
+     sorted by low, so if pc > p->low we are at the end of a range of
+     function_addrs with the same low value.  If pc == p->low walk
+     forward to the end of the range with that low value.  Then walk
+     backward and use the first range that includes pc.  */
+  while (pc == (p + 1)->low)
+    ++p;
+  fmatch = NULL;
+  while (1)
+    {
+      if (pc < p->high)
+	{
+	  fmatch = p;
+	  break;
+	}
+      if (p == entry->u->function_addrs)
+	break;
+      if ((p - 1)->low < p->low)
+	break;
+      --p;
+    }
+  if (fmatch == NULL)
+    return callback (data, pc, ln->filename, ln->lineno, NULL);
+
+  function = fmatch->function;
+
+  filename = ln->filename;
+  lineno = ln->lineno;
+
+  ret = report_inlined_functions (pc, function, callback, data,
+				  &filename, &lineno);
+  if (ret != 0)
+    return ret;
+
+  return callback (data, pc, filename, lineno, function->name);
+}
+
+
+/* Return the file/line information for a PC using the DWARF mapping
+   we built earlier.  */
+
+static int
+dwarf_fileline (struct backtrace_state *state, uintptr_t pc,
+		backtrace_full_callback callback,
+		backtrace_error_callback error_callback, void *data)
+{
+  struct dwarf_data *ddata;
+  int found;
+  int ret;
+
+  if (!state->threaded)
+    {
+      for (ddata = (struct dwarf_data *) state->fileline_data;
+	   ddata != NULL;
+	   ddata = ddata->next)
+	{
+	  ret = dwarf_lookup_pc (state, ddata, pc, callback, error_callback,
+				 data, &found);
+	  if (ret != 0 || found)
+	    return ret;
+	}
+    }
+  else
+    {
+      struct dwarf_data **pp;
+
+      pp = (struct dwarf_data **) (void *) &state->fileline_data;
+      while (1)
+	{
+	  ddata = backtrace_atomic_load_pointer (pp);
+	  if (ddata == NULL)
+	    break;
+
+	  ret = dwarf_lookup_pc (state, ddata, pc, callback, error_callback,
+				 data, &found);
+	  if (ret != 0 || found)
+	    return ret;
+
+	  pp = &ddata->next;
+	}
+    }
+
+  /* FIXME: See if any libraries have been dlopen'ed.  */
+
+  return callback (data, pc, NULL, 0, NULL);
+}
+
+/* Initialize our data structures from the DWARF debug info for a
+   file.  Return NULL on failure.  */
+
+static struct dwarf_data *
+build_dwarf_data (struct backtrace_state *state,
+		  uintptr_t base_address,
+		  const struct dwarf_sections *dwarf_sections,
+		  int is_bigendian,
+		  struct dwarf_data *altlink,
+		  backtrace_error_callback error_callback,
+		  void *data)
+{
+  struct unit_addrs_vector addrs_vec;
+  struct unit_addrs *addrs;
+  size_t addrs_count;
+  struct unit_vector units_vec;
+  struct unit **units;
+  size_t units_count;
+  struct dwarf_data *fdata;
+
+  if (!build_address_map (state, base_address, dwarf_sections, is_bigendian,
+			  altlink, error_callback, data, &addrs_vec,
+			  &units_vec))
+    return NULL;
+
+  if (!backtrace_vector_release (state, &addrs_vec.vec, error_callback, data))
+    return NULL;
+  if (!backtrace_vector_release (state, &units_vec.vec, error_callback, data))
+    return NULL;
+  addrs = (struct unit_addrs *) addrs_vec.vec.base;
+  units = (struct unit **) units_vec.vec.base;
+  addrs_count = addrs_vec.count;
+  units_count = units_vec.count;
+  backtrace_qsort (addrs, addrs_count, sizeof (struct unit_addrs),
+		   unit_addrs_compare);
+  /* No qsort for units required, already sorted.  */
+
+  fdata = ((struct dwarf_data *)
+	   backtrace_alloc (state, sizeof (struct dwarf_data),
+			    error_callback, data));
+  if (fdata == NULL)
+    return NULL;
+
+  fdata->next = NULL;
+  fdata->altlink = altlink;
+  fdata->base_address = base_address;
+  fdata->addrs = addrs;
+  fdata->addrs_count = addrs_count;
+  fdata->units = units;
+  fdata->units_count = units_count;
+  fdata->dwarf_sections = *dwarf_sections;
+  fdata->is_bigendian = is_bigendian;
+  memset (&fdata->fvec, 0, sizeof fdata->fvec);
+
+  return fdata;
+}
+
+/* Build our data structures from the DWARF sections for a module.
+   Set FILELINE_FN and STATE->FILELINE_DATA.  Return 1 on success, 0
+   on failure.  */
+
+int
+backtrace_dwarf_add (struct backtrace_state *state,
+		     uintptr_t base_address,
+		     const struct dwarf_sections *dwarf_sections,
+		     int is_bigendian,
+		     struct dwarf_data *fileline_altlink,
+		     backtrace_error_callback error_callback,
+		     void *data, fileline *fileline_fn,
+		     struct dwarf_data **fileline_entry)
+{
+  struct dwarf_data *fdata;
+
+  fdata = build_dwarf_data (state, base_address, dwarf_sections, is_bigendian,
+			    fileline_altlink, error_callback, data);
+  if (fdata == NULL)
+    return 0;
+
+  if (fileline_entry != NULL)
+    *fileline_entry = fdata;
+
+  if (!state->threaded)
+    {
+      struct dwarf_data **pp;
+
+      for (pp = (struct dwarf_data **) (void *) &state->fileline_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = fdata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct dwarf_data **pp;
+
+	  pp = (struct dwarf_data **) (void *) &state->fileline_data;
+
+	  while (1)
+	    {
+	      struct dwarf_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, fdata))
+	    break;
+	}
+    }
+
+  *fileline_fn = dwarf_fileline;
+
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/edtest.c b/fluent-bit/lib/libbacktrace-8602fda/edtest.c
new file mode 100644
index 000000000..c5ced130c
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/edtest.c
@@ -0,0 +1,120 @@
+/* edtest.c -- Test for libbacktrace storage allocation stress handling
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+#include "internal.h"
+
+#include "testlib.h"
+
+static int test1 (void) __attribute__ ((noinline, noclone, unused));
+extern int f2 (int);
+extern int f3 (int, int);
+
+static int
+test1 (void)
+{
+  /* Returning a value here and elsewhere avoids a tailcall which
+     would mess up the backtrace.  */
+  return f2 (__LINE__) + 1;
+}
+
+int
+f3 (int f1line, int f2line)
+{
+  struct info all[20];
+  struct bdata data;
+  int f3line;
+  int i;
+
+  data.all = &all[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test1: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (data.index < 3)
+    {
+      fprintf (stderr,
+               "test1: not enough frames; got %zu, expected at least 3\n",
+               data.index);
+      data.failed = 1;
+    }
+
+  check ("test1", 0, all, f3line, "f3", "edtest.c", &data.failed);
+  check ("test1", 1, all, f2line, "f2", "edtest2_build.c", &data.failed);
+  check ("test1", 2, all, f1line, "test1", "edtest.c", &data.failed);
+
+  printf ("%s: backtrace_full alloc stress\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+                                  error_callback_create, NULL);
+
+  // Grab the storage allocation lock prior to doing anything interesting.
+  // The intent here is to insure that the backtrace_alloc code is forced
+  // to always call mmap() for new memory as opposed to reusing previously
+  // allocated memory from the free list. Doing things this way helps
+  // simulate what you might see in a multithreaded program in which there
+  // are racing calls to the allocator.
+  struct backtrace_state *state_internal =
+      (struct backtrace_state *) state;
+  state_internal->lock_alloc = 1;
+
+  // Kick off the test
+  test1();
+
+  exit (failures > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/edtest2.c b/fluent-bit/lib/libbacktrace-8602fda/edtest2.c
new file mode 100644
index 000000000..cffb4fdb6
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/edtest2.c
@@ -0,0 +1,43 @@
+/* edtest2.c -- Test for libbacktrace storage allocation stress handling (p2)
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* This file intentionally written without any #include's
+ */
+
+extern int f3(int, int);
+extern int f2(int);
+
+int f2(int x)
+{
+  /* Returning a value here and elsewhere avoids a tailcall which
+     would mess up the backtrace.  */
+  return f3(x, __LINE__) + 3;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/elf.c b/fluent-bit/lib/libbacktrace-8602fda/elf.c
new file mode 100644
index 000000000..61014562a
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/elf.c
@@ -0,0 +1,4924 @@
+/* elf.c -- Get debug data from an ELF file for backtraces.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#ifdef HAVE_DL_ITERATE_PHDR
+ #ifdef HAVE_LINK_H
+  #include <link.h>
+ #endif
+ #ifdef HAVE_SYS_LINK_H
+  #include <sys/link.h>
+ #endif
+#endif
+
+#include "backtrace.h"
+#include "internal.h"
+
+#ifndef S_ISLNK
+ #ifndef S_IFLNK
+  #define S_IFLNK 0120000
+ #endif
+ #ifndef S_IFMT
+  #define S_IFMT 0170000
+ #endif
+ #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
+#endif
+
+#ifndef __GNUC__
+#define __builtin_prefetch(p, r, l)
+#define unlikely(x) (x)
+#else
+#define unlikely(x) __builtin_expect(!!(x), 0)
+#endif
+
+#if !defined(HAVE_DECL_STRNLEN) || !HAVE_DECL_STRNLEN
+
+/* If strnlen is not declared, provide our own version.  */
+
+static size_t
+xstrnlen (const char *s, size_t maxlen)
+{
+  size_t i;
+
+  for (i = 0; i < maxlen; ++i)
+    if (s[i] == '\0')
+      break;
+  return i;
+}
+
+#define strnlen xstrnlen
+
+#endif
+
+#ifndef HAVE_LSTAT
+
+/* Dummy version of lstat for systems that don't have it.  */
+
+static int
+xlstat (const char *path ATTRIBUTE_UNUSED, struct stat *st ATTRIBUTE_UNUSED)
+{
+  return -1;
+}
+
+#define lstat xlstat
+
+#endif
+
+#ifndef HAVE_READLINK
+
+/* Dummy version of readlink for systems that don't have it.  */
+
+static ssize_t
+xreadlink (const char *path ATTRIBUTE_UNUSED, char *buf ATTRIBUTE_UNUSED,
+	   size_t bufsz ATTRIBUTE_UNUSED)
+{
+  return -1;
+}
+
+#define readlink xreadlink
+
+#endif
+
+#ifndef HAVE_DL_ITERATE_PHDR
+
+/* Dummy version of dl_iterate_phdr for systems that don't have it.  */
+
+#define dl_phdr_info x_dl_phdr_info
+#define dl_iterate_phdr x_dl_iterate_phdr
+
+struct dl_phdr_info
+{
+  uintptr_t dlpi_addr;
+  const char *dlpi_name;
+};
+
+static int
+dl_iterate_phdr (int (*callback) (struct dl_phdr_info *,
+				  size_t, void *) ATTRIBUTE_UNUSED,
+		 void *data ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+#endif /* ! defined (HAVE_DL_ITERATE_PHDR) */
+
+/* The configure script must tell us whether we are 32-bit or 64-bit
+   ELF.  We could make this code test and support either possibility,
+   but there is no point.  This code only works for the currently
+   running executable, which means that we know the ELF mode at
+   configure time.  */
+
+#if BACKTRACE_ELF_SIZE != 32 && BACKTRACE_ELF_SIZE != 64
+#error "Unknown BACKTRACE_ELF_SIZE"
+#endif
+
+/* <link.h> might #include <elf.h> which might define our constants
+   with slightly different values.  Undefine them to be safe.  */
+
+#undef EI_NIDENT
+#undef EI_MAG0
+#undef EI_MAG1
+#undef EI_MAG2
+#undef EI_MAG3
+#undef EI_CLASS
+#undef EI_DATA
+#undef EI_VERSION
+#undef ELF_MAG0
+#undef ELF_MAG1
+#undef ELF_MAG2
+#undef ELF_MAG3
+#undef ELFCLASS32
+#undef ELFCLASS64
+#undef ELFDATA2LSB
+#undef ELFDATA2MSB
+#undef EV_CURRENT
+#undef ET_DYN
+#undef EM_PPC64
+#undef EF_PPC64_ABI
+#undef SHN_LORESERVE
+#undef SHN_XINDEX
+#undef SHN_UNDEF
+#undef SHT_PROGBITS
+#undef SHT_SYMTAB
+#undef SHT_STRTAB
+#undef SHT_DYNSYM
+#undef SHF_COMPRESSED
+#undef STT_OBJECT
+#undef STT_FUNC
+#undef NT_GNU_BUILD_ID
+#undef ELFCOMPRESS_ZLIB
+
+/* Basic types.  */
+
+typedef uint16_t b_elf_half;    /* Elf_Half.  */
+typedef uint32_t b_elf_word;    /* Elf_Word.  */
+typedef int32_t  b_elf_sword;   /* Elf_Sword.  */
+
+#if BACKTRACE_ELF_SIZE == 32
+
+typedef uint32_t b_elf_addr;    /* Elf_Addr.  */
+typedef uint32_t b_elf_off;     /* Elf_Off.  */
+
+typedef uint32_t b_elf_wxword;  /* 32-bit Elf_Word, 64-bit ELF_Xword.  */
+
+#else
+
+typedef uint64_t b_elf_addr;    /* Elf_Addr.  */
+typedef uint64_t b_elf_off;     /* Elf_Off.  */
+typedef uint64_t b_elf_xword;   /* Elf_Xword.  */
+typedef int64_t  b_elf_sxword;  /* Elf_Sxword.  */
+
+typedef uint64_t b_elf_wxword;  /* 32-bit Elf_Word, 64-bit ELF_Xword.  */
+
+#endif
+
+/* Data structures and associated constants.  */
+
+#define EI_NIDENT 16
+
+typedef struct {
+  unsigned char	e_ident[EI_NIDENT];	/* ELF "magic number" */
+  b_elf_half	e_type;			/* Identifies object file type */
+  b_elf_half	e_machine;		/* Specifies required architecture */
+  b_elf_word	e_version;		/* Identifies object file version */
+  b_elf_addr	e_entry;		/* Entry point virtual address */
+  b_elf_off	e_phoff;		/* Program header table file offset */
+  b_elf_off	e_shoff;		/* Section header table file offset */
+  b_elf_word	e_flags;		/* Processor-specific flags */
+  b_elf_half	e_ehsize;		/* ELF header size in bytes */
+  b_elf_half	e_phentsize;		/* Program header table entry size */
+  b_elf_half	e_phnum;		/* Program header table entry count */
+  b_elf_half	e_shentsize;		/* Section header table entry size */
+  b_elf_half	e_shnum;		/* Section header table entry count */
+  b_elf_half	e_shstrndx;		/* Section header string table index */
+} b_elf_ehdr;  /* Elf_Ehdr.  */
+
+#define EI_MAG0 0
+#define EI_MAG1 1
+#define EI_MAG2 2
+#define EI_MAG3 3
+#define EI_CLASS 4
+#define EI_DATA 5
+#define EI_VERSION 6
+
+#define ELFMAG0 0x7f
+#define ELFMAG1 'E'
+#define ELFMAG2 'L'
+#define ELFMAG3 'F'
+
+#define ELFCLASS32 1
+#define ELFCLASS64 2
+
+#define ELFDATA2LSB 1
+#define ELFDATA2MSB 2
+
+#define EV_CURRENT 1
+
+#define ET_DYN 3
+
+#define EM_PPC64 21
+#define EF_PPC64_ABI 3
+
+typedef struct {
+  b_elf_word	sh_name;		/* Section name, index in string tbl */
+  b_elf_word	sh_type;		/* Type of section */
+  b_elf_wxword	sh_flags;		/* Miscellaneous section attributes */
+  b_elf_addr	sh_addr;		/* Section virtual addr at execution */
+  b_elf_off	sh_offset;		/* Section file offset */
+  b_elf_wxword	sh_size;		/* Size of section in bytes */
+  b_elf_word	sh_link;		/* Index of another section */
+  b_elf_word	sh_info;		/* Additional section information */
+  b_elf_wxword	sh_addralign;		/* Section alignment */
+  b_elf_wxword	sh_entsize;		/* Entry size if section holds table */
+} b_elf_shdr;  /* Elf_Shdr.  */
+
+#define SHN_UNDEF	0x0000		/* Undefined section */
+#define SHN_LORESERVE	0xFF00		/* Begin range of reserved indices */
+#define SHN_XINDEX	0xFFFF		/* Section index is held elsewhere */
+
+#define SHT_PROGBITS 1
+#define SHT_SYMTAB 2
+#define SHT_STRTAB 3
+#define SHT_DYNSYM 11
+
+#define SHF_COMPRESSED 0x800
+
+#if BACKTRACE_ELF_SIZE == 32
+
+typedef struct
+{
+  b_elf_word	st_name;		/* Symbol name, index in string tbl */
+  b_elf_addr	st_value;		/* Symbol value */
+  b_elf_word	st_size;		/* Symbol size */
+  unsigned char	st_info;		/* Symbol binding and type */
+  unsigned char	st_other;		/* Visibility and other data */
+  b_elf_half	st_shndx;		/* Symbol section index */
+} b_elf_sym;  /* Elf_Sym.  */
+
+#else /* BACKTRACE_ELF_SIZE != 32 */
+
+typedef struct
+{
+  b_elf_word	st_name;		/* Symbol name, index in string tbl */
+  unsigned char	st_info;		/* Symbol binding and type */
+  unsigned char	st_other;		/* Visibility and other data */
+  b_elf_half	st_shndx;		/* Symbol section index */
+  b_elf_addr	st_value;		/* Symbol value */
+  b_elf_xword	st_size;		/* Symbol size */
+} b_elf_sym;  /* Elf_Sym.  */
+
+#endif /* BACKTRACE_ELF_SIZE != 32 */
+
+#define STT_OBJECT 1
+#define STT_FUNC 2
+
+typedef struct
+{
+  uint32_t namesz;
+  uint32_t descsz;
+  uint32_t type;
+  char name[1];
+} b_elf_note;
+
+#define NT_GNU_BUILD_ID 3
+
+#if BACKTRACE_ELF_SIZE == 32
+
+typedef struct
+{
+  b_elf_word	ch_type;		/* Compresstion algorithm */
+  b_elf_word	ch_size;		/* Uncompressed size */
+  b_elf_word	ch_addralign;		/* Alignment for uncompressed data */
+} b_elf_chdr;  /* Elf_Chdr */
+
+#else /* BACKTRACE_ELF_SIZE != 32 */
+
+typedef struct
+{
+  b_elf_word	ch_type;		/* Compression algorithm */
+  b_elf_word	ch_reserved;		/* Reserved */
+  b_elf_xword	ch_size;		/* Uncompressed size */
+  b_elf_xword	ch_addralign;		/* Alignment for uncompressed data */
+} b_elf_chdr;  /* Elf_Chdr */
+
+#endif /* BACKTRACE_ELF_SIZE != 32 */
+
+#define ELFCOMPRESS_ZLIB 1
+
+/* Names of sections, indexed by enum dwarf_section in internal.h.  */
+
+static const char * const dwarf_section_names[DEBUG_MAX] =
+{
+  ".debug_info",
+  ".debug_line",
+  ".debug_abbrev",
+  ".debug_ranges",
+  ".debug_str",
+  ".debug_addr",
+  ".debug_str_offsets",
+  ".debug_line_str",
+  ".debug_rnglists"
+};
+
+/* Information we gather for the sections we care about.  */
+
+struct debug_section_info
+{
+  /* Section file offset.  */
+  off_t offset;
+  /* Section size.  */
+  size_t size;
+  /* Section contents, after read from file.  */
+  const unsigned char *data;
+  /* Whether the SHF_COMPRESSED flag is set for the section.  */
+  int compressed;
+};
+
+/* Information we keep for an ELF symbol.  */
+
+struct elf_symbol
+{
+  /* The name of the symbol.  */
+  const char *name;
+  /* The address of the symbol.  */
+  uintptr_t address;
+  /* The size of the symbol.  */
+  size_t size;
+};
+
+/* Information to pass to elf_syminfo.  */
+
+struct elf_syminfo_data
+{
+  /* Symbols for the next module.  */
+  struct elf_syminfo_data *next;
+  /* The ELF symbols, sorted by address.  */
+  struct elf_symbol *symbols;
+  /* The number of symbols.  */
+  size_t count;
+};
+
+/* A view that works for either a file or memory.  */
+
+struct elf_view
+{
+  struct backtrace_view view;
+  int release; /* If non-zero, must call backtrace_release_view.  */
+};
+
+/* Information about PowerPC64 ELFv1 .opd section.  */
+
+struct elf_ppc64_opd_data
+{
+  /* Address of the .opd section.  */
+  b_elf_addr addr;
+  /* Section data.  */
+  const char *data;
+  /* Size of the .opd section.  */
+  size_t size;
+  /* Corresponding section view.  */
+  struct elf_view view;
+};
+
+/* Create a view of SIZE bytes from DESCRIPTOR/MEMORY at OFFSET.  */
+
+static int
+elf_get_view (struct backtrace_state *state, int descriptor,
+	      const unsigned char *memory, size_t memory_size, off_t offset,
+	      uint64_t size, backtrace_error_callback error_callback,
+	      void *data, struct elf_view *view)
+{
+  if (memory == NULL)
+    {
+      view->release = 1;
+      return backtrace_get_view (state, descriptor, offset, size,
+				 error_callback, data, &view->view);
+    }
+  else
+    {
+      if ((uint64_t) offset + size > (uint64_t) memory_size)
+	{
+	  error_callback (data, "out of range for in-memory file", 0);
+	  return 0;
+	}
+      view->view.data = (const void *) (memory + offset);
+      view->view.base = NULL;
+      view->view.len = size;
+      view->release = 0;
+      return 1;
+    }
+}
+
+/* Release a view read by elf_get_view.  */
+
+static void
+elf_release_view (struct backtrace_state *state, struct elf_view *view,
+		  backtrace_error_callback error_callback, void *data)
+{
+  if (view->release)
+    backtrace_release_view (state, &view->view, error_callback, data);
+}
+
+/* Compute the CRC-32 of BUF/LEN.  This uses the CRC used for
+   .gnu_debuglink files.  */
+
+static uint32_t
+elf_crc32 (uint32_t crc, const unsigned char *buf, size_t len)
+{
+  static const uint32_t crc32_table[256] =
+    {
+      0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
+      0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
+      0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
+      0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
+      0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
+      0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+      0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
+      0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+      0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
+      0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
+      0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
+      0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+      0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
+      0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
+      0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
+      0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+      0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
+      0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+      0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
+      0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
+      0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
+      0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
+      0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
+      0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+      0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
+      0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
+      0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
+      0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
+      0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
+      0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+      0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
+      0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+      0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
+      0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
+      0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
+      0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+      0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
+      0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
+      0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
+      0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+      0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
+      0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+      0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
+      0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
+      0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
+      0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
+      0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
+      0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+      0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
+      0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
+      0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
+      0x2d02ef8d
+    };
+  const unsigned char *end;
+
+  crc = ~crc;
+  for (end = buf + len; buf < end; ++ buf)
+    crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8);
+  return ~crc;
+}
+
+/* Return the CRC-32 of the entire file open at DESCRIPTOR.  */
+
+static uint32_t
+elf_crc32_file (struct backtrace_state *state, int descriptor,
+		backtrace_error_callback error_callback, void *data)
+{
+  struct stat st;
+  struct backtrace_view file_view;
+  uint32_t ret;
+
+  if (fstat (descriptor, &st) < 0)
+    {
+      error_callback (data, "fstat", errno);
+      return 0;
+    }
+
+  if (!backtrace_get_view (state, descriptor, 0, st.st_size, error_callback,
+			   data, &file_view))
+    return 0;
+
+  ret = elf_crc32 (0, (const unsigned char *) file_view.data, st.st_size);
+
+  backtrace_release_view (state, &file_view, error_callback, data);
+
+  return ret;
+}
+
+/* A dummy callback function used when we can't find a symbol
+   table.  */
+
+static void
+elf_nosyms (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	    uintptr_t addr ATTRIBUTE_UNUSED,
+	    backtrace_syminfo_callback callback ATTRIBUTE_UNUSED,
+	    backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no symbol table in ELF executable", -1);
+}
+
+/* A callback function used when we can't find any debug info.  */
+
+static int
+elf_nodebug (struct backtrace_state *state, uintptr_t pc,
+	     backtrace_full_callback callback,
+	     backtrace_error_callback error_callback, void *data)
+{
+  if (state->syminfo_fn != NULL && state->syminfo_fn != elf_nosyms)
+    {
+      struct backtrace_call_full bdata;
+
+      /* Fetch symbol information so that we can least get the
+	 function name.  */
+
+      bdata.full_callback = callback;
+      bdata.full_error_callback = error_callback;
+      bdata.full_data = data;
+      bdata.ret = 0;
+      state->syminfo_fn (state, pc, backtrace_syminfo_to_full_callback,
+			 backtrace_syminfo_to_full_error_callback, &bdata);
+      return bdata.ret;
+    }
+
+  error_callback (data, "no debug info in ELF executable", -1);
+  return 0;
+}
+
+/* Compare struct elf_symbol for qsort.  */
+
+static int
+elf_symbol_compare (const void *v1, const void *v2)
+{
+  const struct elf_symbol *e1 = (const struct elf_symbol *) v1;
+  const struct elf_symbol *e2 = (const struct elf_symbol *) v2;
+
+  if (e1->address < e2->address)
+    return -1;
+  else if (e1->address > e2->address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare an ADDR against an elf_symbol for bsearch.  We allocate one
+   extra entry in the array so that this can look safely at the next
+   entry.  */
+
+static int
+elf_symbol_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct elf_symbol *entry = (const struct elf_symbol *) ventry;
+  uintptr_t addr;
+
+  addr = *key;
+  if (addr < entry->address)
+    return -1;
+  else if (addr >= entry->address + entry->size)
+    return 1;
+  else
+    return 0;
+}
+
+/* Initialize the symbol table info for elf_syminfo.  */
+
+static int
+elf_initialize_syminfo (struct backtrace_state *state,
+			uintptr_t base_address,
+			const unsigned char *symtab_data, size_t symtab_size,
+			const unsigned char *strtab, size_t strtab_size,
+			backtrace_error_callback error_callback,
+			void *data, struct elf_syminfo_data *sdata,
+			struct elf_ppc64_opd_data *opd)
+{
+  size_t sym_count;
+  const b_elf_sym *sym;
+  size_t elf_symbol_count;
+  size_t elf_symbol_size;
+  struct elf_symbol *elf_symbols;
+  size_t i;
+  unsigned int j;
+
+  sym_count = symtab_size / sizeof (b_elf_sym);
+
+  /* We only care about function symbols.  Count them.  */
+  sym = (const b_elf_sym *) symtab_data;
+  elf_symbol_count = 0;
+  for (i = 0; i < sym_count; ++i, ++sym)
+    {
+      int info;
+
+      info = sym->st_info & 0xf;
+      if ((info == STT_FUNC || info == STT_OBJECT)
+	  && sym->st_shndx != SHN_UNDEF)
+	++elf_symbol_count;
+    }
+
+  elf_symbol_size = elf_symbol_count * sizeof (struct elf_symbol);
+  elf_symbols = ((struct elf_symbol *)
+		 backtrace_alloc (state, elf_symbol_size, error_callback,
+				  data));
+  if (elf_symbols == NULL)
+    return 0;
+
+  sym = (const b_elf_sym *) symtab_data;
+  j = 0;
+  for (i = 0; i < sym_count; ++i, ++sym)
+    {
+      int info;
+
+      info = sym->st_info & 0xf;
+      if (info != STT_FUNC && info != STT_OBJECT)
+	continue;
+      if (sym->st_shndx == SHN_UNDEF)
+	continue;
+      if (sym->st_name >= strtab_size)
+	{
+	  error_callback (data, "symbol string index out of range", 0);
+	  backtrace_free (state, elf_symbols, elf_symbol_size, error_callback,
+			  data);
+	  return 0;
+	}
+      elf_symbols[j].name = (const char *) strtab + sym->st_name;
+      /* Special case PowerPC64 ELFv1 symbols in .opd section, if the symbol
+	 is a function descriptor, read the actual code address from the
+	 descriptor.  */
+      if (opd
+	  && sym->st_value >= opd->addr
+	  && sym->st_value < opd->addr + opd->size)
+	elf_symbols[j].address
+	  = *(const b_elf_addr *) (opd->data + (sym->st_value - opd->addr));
+      else
+	elf_symbols[j].address = sym->st_value;
+      elf_symbols[j].address += base_address;
+      elf_symbols[j].size = sym->st_size;
+      ++j;
+    }
+
+  backtrace_qsort (elf_symbols, elf_symbol_count, sizeof (struct elf_symbol),
+		   elf_symbol_compare);
+
+  sdata->next = NULL;
+  sdata->symbols = elf_symbols;
+  sdata->count = elf_symbol_count;
+
+  return 1;
+}
+
+/* Add EDATA to the list in STATE.  */
+
+static void
+elf_add_syminfo_data (struct backtrace_state *state,
+		      struct elf_syminfo_data *edata)
+{
+  if (!state->threaded)
+    {
+      struct elf_syminfo_data **pp;
+
+      for (pp = (struct elf_syminfo_data **) (void *) &state->syminfo_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = edata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct elf_syminfo_data **pp;
+
+	  pp = (struct elf_syminfo_data **) (void *) &state->syminfo_data;
+
+	  while (1)
+	    {
+	      struct elf_syminfo_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, edata))
+	    break;
+	}
+    }
+}
+
+/* Return the symbol name and value for an ADDR.  */
+
+static void
+elf_syminfo (struct backtrace_state *state, uintptr_t addr,
+	     backtrace_syminfo_callback callback,
+	     backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+	     void *data)
+{
+  struct elf_syminfo_data *edata;
+  struct elf_symbol *sym = NULL;
+
+  if (!state->threaded)
+    {
+      for (edata = (struct elf_syminfo_data *) state->syminfo_data;
+	   edata != NULL;
+	   edata = edata->next)
+	{
+	  sym = ((struct elf_symbol *)
+		 bsearch (&addr, edata->symbols, edata->count,
+			  sizeof (struct elf_symbol), elf_symbol_search));
+	  if (sym != NULL)
+	    break;
+	}
+    }
+  else
+    {
+      struct elf_syminfo_data **pp;
+
+      pp = (struct elf_syminfo_data **) (void *) &state->syminfo_data;
+      while (1)
+	{
+	  edata = backtrace_atomic_load_pointer (pp);
+	  if (edata == NULL)
+	    break;
+
+	  sym = ((struct elf_symbol *)
+		 bsearch (&addr, edata->symbols, edata->count,
+			  sizeof (struct elf_symbol), elf_symbol_search));
+	  if (sym != NULL)
+	    break;
+
+	  pp = &edata->next;
+	}
+    }
+
+  if (sym == NULL)
+    callback (data, addr, NULL, 0, 0);
+  else
+    callback (data, addr, sym->name, sym->address, sym->size);
+}
+
+/* Return whether FILENAME is a symlink.  */
+
+static int
+elf_is_symlink (const char *filename)
+{
+  struct stat st;
+
+  if (lstat (filename, &st) < 0)
+    return 0;
+  return S_ISLNK (st.st_mode);
+}
+
+/* Return the results of reading the symlink FILENAME in a buffer
+   allocated by backtrace_alloc.  Return the length of the buffer in
+   *LEN.  */
+
+static char *
+elf_readlink (struct backtrace_state *state, const char *filename,
+	      backtrace_error_callback error_callback, void *data,
+	      size_t *plen)
+{
+  size_t len;
+  char *buf;
+
+  len = 128;
+  while (1)
+    {
+      ssize_t rl;
+
+      buf = backtrace_alloc (state, len, error_callback, data);
+      if (buf == NULL)
+	return NULL;
+      rl = readlink (filename, buf, len);
+      if (rl < 0)
+	{
+	  backtrace_free (state, buf, len, error_callback, data);
+	  return NULL;
+	}
+      if ((size_t) rl < len - 1)
+	{
+	  buf[rl] = '\0';
+	  *plen = len;
+	  return buf;
+	}
+      backtrace_free (state, buf, len, error_callback, data);
+      len *= 2;
+    }
+}
+
+#define SYSTEM_BUILD_ID_DIR "/usr/lib/debug/.build-id/"
+
+/* Open a separate debug info file, using the build ID to find it.
+   Returns an open file descriptor, or -1.
+
+   The GDB manual says that the only place gdb looks for a debug file
+   when the build ID is known is in /usr/lib/debug/.build-id.  */
+
+static int
+elf_open_debugfile_by_buildid (struct backtrace_state *state,
+			       const char *buildid_data, size_t buildid_size,
+			       backtrace_error_callback error_callback,
+			       void *data)
+{
+  const char * const prefix = SYSTEM_BUILD_ID_DIR;
+  const size_t prefix_len = strlen (prefix);
+  const char * const suffix = ".debug";
+  const size_t suffix_len = strlen (suffix);
+  size_t len;
+  char *bd_filename;
+  char *t;
+  size_t i;
+  int ret;
+  int does_not_exist;
+
+  len = prefix_len + buildid_size * 2 + suffix_len + 2;
+  bd_filename = backtrace_alloc (state, len, error_callback, data);
+  if (bd_filename == NULL)
+    return -1;
+
+  t = bd_filename;
+  memcpy (t, prefix, prefix_len);
+  t += prefix_len;
+  for (i = 0; i < buildid_size; i++)
+    {
+      unsigned char b;
+      unsigned char nib;
+
+      b = (unsigned char) buildid_data[i];
+      nib = (b & 0xf0) >> 4;
+      *t++ = nib < 10 ? '0' + nib : 'a' + nib - 10;
+      nib = b & 0x0f;
+      *t++ = nib < 10 ? '0' + nib : 'a' + nib - 10;
+      if (i == 0)
+	*t++ = '/';
+    }
+  memcpy (t, suffix, suffix_len);
+  t[suffix_len] = '\0';
+
+  ret = backtrace_open (bd_filename, error_callback, data, &does_not_exist);
+
+  backtrace_free (state, bd_filename, len, error_callback, data);
+
+  /* gdb checks that the debuginfo file has the same build ID note.
+     That seems kind of pointless to me--why would it have the right
+     name but not the right build ID?--so skipping the check.  */
+
+  return ret;
+}
+
+/* Try to open a file whose name is PREFIX (length PREFIX_LEN)
+   concatenated with PREFIX2 (length PREFIX2_LEN) concatenated with
+   DEBUGLINK_NAME.  Returns an open file descriptor, or -1.  */
+
+static int
+elf_try_debugfile (struct backtrace_state *state, const char *prefix,
+		   size_t prefix_len, const char *prefix2, size_t prefix2_len,
+		   const char *debuglink_name,
+		   backtrace_error_callback error_callback, void *data)
+{
+  size_t debuglink_len;
+  size_t try_len;
+  char *try;
+  int does_not_exist;
+  int ret;
+
+  debuglink_len = strlen (debuglink_name);
+  try_len = prefix_len + prefix2_len + debuglink_len + 1;
+  try = backtrace_alloc (state, try_len, error_callback, data);
+  if (try == NULL)
+    return -1;
+
+  memcpy (try, prefix, prefix_len);
+  memcpy (try + prefix_len, prefix2, prefix2_len);
+  memcpy (try + prefix_len + prefix2_len, debuglink_name, debuglink_len);
+  try[prefix_len + prefix2_len + debuglink_len] = '\0';
+
+  ret = backtrace_open (try, error_callback, data, &does_not_exist);
+
+  backtrace_free (state, try, try_len, error_callback, data);
+
+  return ret;
+}
+
+/* Find a separate debug info file, using the debuglink section data
+   to find it.  Returns an open file descriptor, or -1.  */
+
+static int
+elf_find_debugfile_by_debuglink (struct backtrace_state *state,
+				 const char *filename,
+				 const char *debuglink_name,
+				 backtrace_error_callback error_callback,
+				 void *data)
+{
+  int ret;
+  char *alc;
+  size_t alc_len;
+  const char *slash;
+  int ddescriptor;
+  const char *prefix;
+  size_t prefix_len;
+
+  /* Resolve symlinks in FILENAME.  Since FILENAME is fairly likely to
+     be /proc/self/exe, symlinks are common.  We don't try to resolve
+     the whole path name, just the base name.  */
+  ret = -1;
+  alc = NULL;
+  alc_len = 0;
+  while (elf_is_symlink (filename))
+    {
+      char *new_buf;
+      size_t new_len;
+
+      new_buf = elf_readlink (state, filename, error_callback, data, &new_len);
+      if (new_buf == NULL)
+	break;
+
+      if (new_buf[0] == '/')
+	filename = new_buf;
+      else
+	{
+	  slash = strrchr (filename, '/');
+	  if (slash == NULL)
+	    filename = new_buf;
+	  else
+	    {
+	      size_t clen;
+	      char *c;
+
+	      slash++;
+	      clen = slash - filename + strlen (new_buf) + 1;
+	      c = backtrace_alloc (state, clen, error_callback, data);
+	      if (c == NULL)
+		goto done;
+
+	      memcpy (c, filename, slash - filename);
+	      memcpy (c + (slash - filename), new_buf, strlen (new_buf));
+	      c[slash - filename + strlen (new_buf)] = '\0';
+	      backtrace_free (state, new_buf, new_len, error_callback, data);
+	      filename = c;
+	      new_buf = c;
+	      new_len = clen;
+	    }
+	}
+
+      if (alc != NULL)
+	backtrace_free (state, alc, alc_len, error_callback, data);
+      alc = new_buf;
+      alc_len = new_len;
+    }
+
+  /* Look for DEBUGLINK_NAME in the same directory as FILENAME.  */
+
+  slash = strrchr (filename, '/');
+  if (slash == NULL)
+    {
+      prefix = "";
+      prefix_len = 0;
+    }
+  else
+    {
+      slash++;
+      prefix = filename;
+      prefix_len = slash - filename;
+    }
+
+  ddescriptor = elf_try_debugfile (state, prefix, prefix_len, "", 0,
+				   debuglink_name, error_callback, data);
+  if (ddescriptor >= 0)
+    {
+      ret = ddescriptor;
+      goto done;
+    }
+
+  /* Look for DEBUGLINK_NAME in a .debug subdirectory of FILENAME.  */
+
+  ddescriptor = elf_try_debugfile (state, prefix, prefix_len, ".debug/",
+				   strlen (".debug/"), debuglink_name,
+				   error_callback, data);
+  if (ddescriptor >= 0)
+    {
+      ret = ddescriptor;
+      goto done;
+    }
+
+  /* Look for DEBUGLINK_NAME in /usr/lib/debug.  */
+
+  ddescriptor = elf_try_debugfile (state, "/usr/lib/debug/",
+				   strlen ("/usr/lib/debug/"), prefix,
+				   prefix_len, debuglink_name,
+				   error_callback, data);
+  if (ddescriptor >= 0)
+    ret = ddescriptor;
+
+ done:
+  if (alc != NULL && alc_len > 0)
+    backtrace_free (state, alc, alc_len, error_callback, data);
+  return ret;
+}
+
+/* Open a separate debug info file, using the debuglink section data
+   to find it.  Returns an open file descriptor, or -1.  */
+
+static int
+elf_open_debugfile_by_debuglink (struct backtrace_state *state,
+				 const char *filename,
+				 const char *debuglink_name,
+				 uint32_t debuglink_crc,
+				 backtrace_error_callback error_callback,
+				 void *data)
+{
+  int ddescriptor;
+
+  ddescriptor = elf_find_debugfile_by_debuglink (state, filename,
+						 debuglink_name,
+						 error_callback, data);
+  if (ddescriptor < 0)
+    return -1;
+
+  if (debuglink_crc != 0)
+    {
+      uint32_t got_crc;
+
+      got_crc = elf_crc32_file (state, ddescriptor, error_callback, data);
+      if (got_crc != debuglink_crc)
+	{
+	  backtrace_close (ddescriptor, error_callback, data);
+	  return -1;
+	}
+    }
+
+  return ddescriptor;
+}
+
+/* A function useful for setting a breakpoint for an inflation failure
+   when this code is compiled with -g.  */
+
+static void
+elf_uncompress_failed(void)
+{
+}
+
+/* *PVAL is the current value being read from the stream, and *PBITS
+   is the number of valid bits.  Ensure that *PVAL holds at least 15
+   bits by reading additional bits from *PPIN, up to PINEND, as
+   needed.  Updates *PPIN, *PVAL and *PBITS.  Returns 1 on success, 0
+   on error.  */
+
+static int
+elf_zlib_fetch (const unsigned char **ppin, const unsigned char *pinend,
+		uint64_t *pval, unsigned int *pbits)
+{
+  unsigned int bits;
+  const unsigned char *pin;
+  uint64_t val;
+  uint32_t next;
+
+  bits = *pbits;
+  if (bits >= 15)
+    return 1;
+  pin = *ppin;
+  val = *pval;
+
+  if (unlikely (pinend - pin < 4))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) \
+    && defined(__ORDER_BIG_ENDIAN__) \
+    && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ \
+        || __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
+  /* We've ensured that PIN is aligned.  */
+  next = *(const uint32_t *)pin;
+
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+  next = __builtin_bswap32 (next);
+#endif
+#else
+  next = pin[0] | (pin[1] << 8) | (pin[2] << 16) | (pin[3] << 24);
+#endif
+
+  val |= (uint64_t)next << bits;
+  bits += 32;
+  pin += 4;
+
+  /* We will need the next four bytes soon.  */
+  __builtin_prefetch (pin, 0, 0);
+
+  *ppin = pin;
+  *pval = val;
+  *pbits = bits;
+  return 1;
+}
+
+/* Huffman code tables, like the rest of the zlib format, are defined
+   by RFC 1951.  We store a Huffman code table as a series of tables
+   stored sequentially in memory.  Each entry in a table is 16 bits.
+   The first, main, table has 256 entries.  It is followed by a set of
+   secondary tables of length 2 to 128 entries.  The maximum length of
+   a code sequence in the deflate format is 15 bits, so that is all we
+   need.  Each secondary table has an index, which is the offset of
+   the table in the overall memory storage.
+
+   The deflate format says that all codes of a given bit length are
+   lexicographically consecutive.  Perhaps we could have 130 values
+   that require a 15-bit code, perhaps requiring three secondary
+   tables of size 128.  I don't know if this is actually possible, but
+   it suggests that the maximum size required for secondary tables is
+   3 * 128 + 3 * 64 ... == 768.  The zlib enough program reports 660
+   as the maximum.  We permit 768, since in addition to the 256 for
+   the primary table, with two bytes per entry, and with the two
+   tables we need, that gives us a page.
+
+   A single table entry needs to store a value or (for the main table
+   only) the index and size of a secondary table.  Values range from 0
+   to 285, inclusive.  Secondary table indexes, per above, range from
+   0 to 510.  For a value we need to store the number of bits we need
+   to determine that value (one value may appear multiple times in the
+   table), which is 1 to 8.  For a secondary table we need to store
+   the number of bits used to index into the table, which is 1 to 7.
+   And of course we need 1 bit to decide whether we have a value or a
+   secondary table index.  So each entry needs 9 bits for value/table
+   index, 3 bits for size, 1 bit what it is.  For simplicity we use 16
+   bits per entry.  */
+
+/* Number of entries we allocate to for one code table.  We get a page
+   for the two code tables we need.  */
+
+#define HUFFMAN_TABLE_SIZE (1024)
+
+/* Bit masks and shifts for the values in the table.  */
+
+#define HUFFMAN_VALUE_MASK 0x01ff
+#define HUFFMAN_BITS_SHIFT 9
+#define HUFFMAN_BITS_MASK 0x7
+#define HUFFMAN_SECONDARY_SHIFT 12
+
+/* For working memory while inflating we need two code tables, we need
+   an array of code lengths (max value 15, so we use unsigned char),
+   and an array of unsigned shorts used while building a table.  The
+   latter two arrays must be large enough to hold the maximum number
+   of code lengths, which RFC 1951 defines as 286 + 30.  */
+
+#define ZDEBUG_TABLE_SIZE \
+  (2 * HUFFMAN_TABLE_SIZE * sizeof (uint16_t) \
+   + (286 + 30) * sizeof (uint16_t)	      \
+   + (286 + 30) * sizeof (unsigned char))
+
+#define ZDEBUG_TABLE_CODELEN_OFFSET \
+  (2 * HUFFMAN_TABLE_SIZE * sizeof (uint16_t) \
+   + (286 + 30) * sizeof (uint16_t))
+
+#define ZDEBUG_TABLE_WORK_OFFSET \
+  (2 * HUFFMAN_TABLE_SIZE * sizeof (uint16_t))
+
+#ifdef BACKTRACE_GENERATE_FIXED_HUFFMAN_TABLE
+
+/* Used by the main function that generates the fixed table to learn
+   the table size.  */
+static size_t final_next_secondary;
+
+#endif
+
+/* Build a Huffman code table from an array of lengths in CODES of
+   length CODES_LEN.  The table is stored into *TABLE.  ZDEBUG_TABLE
+   is the same as for elf_zlib_inflate, used to find some work space.
+   Returns 1 on success, 0 on error.  */
+
+static int
+elf_zlib_inflate_table (unsigned char *codes, size_t codes_len,
+			uint16_t *zdebug_table, uint16_t *table)
+{
+  uint16_t count[16];
+  uint16_t start[16];
+  uint16_t prev[16];
+  uint16_t firstcode[7];
+  uint16_t *next;
+  size_t i;
+  size_t j;
+  unsigned int code;
+  size_t next_secondary;
+
+  /* Count the number of code of each length.  Set NEXT[val] to be the
+     next value after VAL with the same bit length.  */
+
+  next = (uint16_t *) (((unsigned char *) zdebug_table)
+		       + ZDEBUG_TABLE_WORK_OFFSET);
+
+  memset (&count[0], 0, 16 * sizeof (uint16_t));
+  for (i = 0; i < codes_len; ++i)
+    {
+      if (unlikely (codes[i] >= 16))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+
+      if (count[codes[i]] == 0)
+	{
+	  start[codes[i]] = i;
+	  prev[codes[i]] = i;
+	}
+      else
+	{
+	  next[prev[codes[i]]] = i;
+	  prev[codes[i]] = i;
+	}
+
+      ++count[codes[i]];
+    }
+
+  /* For each length, fill in the table for the codes of that
+     length.  */
+
+  memset (table, 0, HUFFMAN_TABLE_SIZE * sizeof (uint16_t));
+
+  /* Handle the values that do not require a secondary table.  */
+
+  code = 0;
+  for (j = 1; j <= 8; ++j)
+    {
+      unsigned int jcnt;
+      unsigned int val;
+
+      jcnt = count[j];
+      if (jcnt == 0)
+	continue;
+
+      if (unlikely (jcnt > (1U << j)))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+
+      /* There are JCNT values that have this length, the values
+	 starting from START[j] continuing through NEXT[VAL].  Those
+	 values are assigned consecutive values starting at CODE.  */
+
+      val = start[j];
+      for (i = 0; i < jcnt; ++i)
+	{
+	  uint16_t tval;
+	  size_t ind;
+	  unsigned int incr;
+
+	  /* In the compressed bit stream, the value VAL is encoded as
+	     J bits with the value C.  */
+
+	  if (unlikely ((val & ~HUFFMAN_VALUE_MASK) != 0))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  tval = val | ((j - 1) << HUFFMAN_BITS_SHIFT);
+
+	  /* The table lookup uses 8 bits.  If J is less than 8, we
+	     don't know what the other bits will be.  We need to fill
+	     in all possibilities in the table.  Since the Huffman
+	     code is unambiguous, those entries can't be used for any
+	     other code.  */
+
+	  for (ind = code; ind < 0x100; ind += 1 << j)
+	    {
+	      if (unlikely (table[ind] != 0))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      table[ind] = tval;
+	    }
+
+	  /* Advance to the next value with this length.  */
+	  if (i + 1 < jcnt)
+	    val = next[val];
+
+	  /* The Huffman codes are stored in the bitstream with the
+	     most significant bit first, as is required to make them
+	     unambiguous.  The effect is that when we read them from
+	     the bitstream we see the bit sequence in reverse order:
+	     the most significant bit of the Huffman code is the least
+	     significant bit of the value we read from the bitstream.
+	     That means that to make our table lookups work, we need
+	     to reverse the bits of CODE.  Since reversing bits is
+	     tedious and in general requires using a table, we instead
+	     increment CODE in reverse order.  That is, if the number
+	     of bits we are currently using, here named J, is 3, we
+	     count as 000, 100, 010, 110, 001, 101, 011, 111, which is
+	     to say the numbers from 0 to 7 but with the bits
+	     reversed.  Going to more bits, aka incrementing J,
+	     effectively just adds more zero bits as the beginning,
+	     and as such does not change the numeric value of CODE.
+
+	     To increment CODE of length J in reverse order, find the
+	     most significant zero bit and set it to one while
+	     clearing all higher bits.  In other words, add 1 modulo
+	     2^J, only reversed.  */
+
+	  incr = 1U << (j - 1);
+	  while ((code & incr) != 0)
+	    incr >>= 1;
+	  if (incr == 0)
+	    code = 0;
+	  else
+	    {
+	      code &= incr - 1;
+	      code += incr;
+	    }
+	}
+    }
+
+  /* Handle the values that require a secondary table.  */
+
+  /* Set FIRSTCODE, the number at which the codes start, for each
+     length.  */
+
+  for (j = 9; j < 16; j++)
+    {
+      unsigned int jcnt;
+      unsigned int k;
+
+      jcnt = count[j];
+      if (jcnt == 0)
+	continue;
+
+      /* There are JCNT values that have this length, the values
+	 starting from START[j].  Those values are assigned
+	 consecutive values starting at CODE.  */
+
+      firstcode[j - 9] = code;
+
+      /* Reverse add JCNT to CODE modulo 2^J.  */
+      for (k = 0; k < j; ++k)
+	{
+	  if ((jcnt & (1U << k)) != 0)
+	    {
+	      unsigned int m;
+	      unsigned int bit;
+
+	      bit = 1U << (j - k - 1);
+	      for (m = 0; m < j - k; ++m, bit >>= 1)
+		{
+		  if ((code & bit) == 0)
+		    {
+		      code += bit;
+		      break;
+		    }
+		  code &= ~bit;
+		}
+	      jcnt &= ~(1U << k);
+	    }
+	}
+      if (unlikely (jcnt != 0))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+    }
+
+  /* For J from 9 to 15, inclusive, we store COUNT[J] consecutive
+     values starting at START[J] with consecutive codes starting at
+     FIRSTCODE[J - 9].  In the primary table we need to point to the
+     secondary table, and the secondary table will be indexed by J - 9
+     bits.  We count down from 15 so that we install the larger
+     secondary tables first, as the smaller ones may be embedded in
+     the larger ones.  */
+
+  next_secondary = 0; /* Index of next secondary table (after primary).  */
+  for (j = 15; j >= 9; j--)
+    {
+      unsigned int jcnt;
+      unsigned int val;
+      size_t primary; /* Current primary index.  */
+      size_t secondary; /* Offset to current secondary table.  */
+      size_t secondary_bits; /* Bit size of current secondary table.  */
+
+      jcnt = count[j];
+      if (jcnt == 0)
+	continue;
+
+      val = start[j];
+      code = firstcode[j - 9];
+      primary = 0x100;
+      secondary = 0;
+      secondary_bits = 0;
+      for (i = 0; i < jcnt; ++i)
+	{
+	  uint16_t tval;
+	  size_t ind;
+	  unsigned int incr;
+
+	  if ((code & 0xff) != primary)
+	    {
+	      uint16_t tprimary;
+
+	      /* Fill in a new primary table entry.  */
+
+	      primary = code & 0xff;
+
+	      tprimary = table[primary];
+	      if (tprimary == 0)
+		{
+		  /* Start a new secondary table.  */
+
+		  if (unlikely ((next_secondary & HUFFMAN_VALUE_MASK)
+				!= next_secondary))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+
+		  secondary = next_secondary;
+		  secondary_bits = j - 8;
+		  next_secondary += 1 << secondary_bits;
+		  table[primary] = (secondary
+				    + ((j - 8) << HUFFMAN_BITS_SHIFT)
+				    + (1U << HUFFMAN_SECONDARY_SHIFT));
+		}
+	      else
+		{
+		  /* There is an existing entry.  It had better be a
+		     secondary table with enough bits.  */
+		  if (unlikely ((tprimary & (1U << HUFFMAN_SECONDARY_SHIFT))
+				== 0))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		  secondary = tprimary & HUFFMAN_VALUE_MASK;
+		  secondary_bits = ((tprimary >> HUFFMAN_BITS_SHIFT)
+				    & HUFFMAN_BITS_MASK);
+		  if (unlikely (secondary_bits < j - 8))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		}
+	    }
+
+	  /* Fill in secondary table entries.  */
+
+	  tval = val | ((j - 8) << HUFFMAN_BITS_SHIFT);
+
+	  for (ind = code >> 8;
+	       ind < (1U << secondary_bits);
+	       ind += 1U << (j - 8))
+	    {
+	      if (unlikely (table[secondary + 0x100 + ind] != 0))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      table[secondary + 0x100 + ind] = tval;
+	    }
+
+	  if (i + 1 < jcnt)
+	    val = next[val];
+
+	  incr = 1U << (j - 1);
+	  while ((code & incr) != 0)
+	    incr >>= 1;
+	  if (incr == 0)
+	    code = 0;
+	  else
+	    {
+	      code &= incr - 1;
+	      code += incr;
+	    }
+	}
+    }
+
+#ifdef BACKTRACE_GENERATE_FIXED_HUFFMAN_TABLE
+  final_next_secondary = next_secondary;
+#endif
+
+  return 1;
+}
+
+#ifdef BACKTRACE_GENERATE_FIXED_HUFFMAN_TABLE
+
+/* Used to generate the fixed Huffman table for block type 1.  */
+
+#include <stdio.h>
+
+static uint16_t table[ZDEBUG_TABLE_SIZE];
+static unsigned char codes[288];
+
+int
+main ()
+{
+  size_t i;
+
+  for (i = 0; i <= 143; ++i)
+    codes[i] = 8;
+  for (i = 144; i <= 255; ++i)
+    codes[i] = 9;
+  for (i = 256; i <= 279; ++i)
+    codes[i] = 7;
+  for (i = 280; i <= 287; ++i)
+    codes[i] = 8;
+  if (!elf_zlib_inflate_table (&codes[0], 288, &table[0], &table[0]))
+    {
+      fprintf (stderr, "elf_zlib_inflate_table failed\n");
+      exit (EXIT_FAILURE);
+    }
+
+  printf ("static const uint16_t elf_zlib_default_table[%#zx] =\n",
+	  final_next_secondary + 0x100);
+  printf ("{\n");
+  for (i = 0; i < final_next_secondary + 0x100; i += 8)
+    {
+      size_t j;
+
+      printf (" ");
+      for (j = i; j < final_next_secondary + 0x100 && j < i + 8; ++j)
+	printf (" %#x,", table[j]);
+      printf ("\n");
+    }
+  printf ("};\n");
+  printf ("\n");
+
+  for (i = 0; i < 32; ++i)
+    codes[i] = 5;
+  if (!elf_zlib_inflate_table (&codes[0], 32, &table[0], &table[0]))
+    {
+      fprintf (stderr, "elf_zlib_inflate_table failed\n");
+      exit (EXIT_FAILURE);
+    }
+
+  printf ("static const uint16_t elf_zlib_default_dist_table[%#zx] =\n",
+	  final_next_secondary + 0x100);
+  printf ("{\n");
+  for (i = 0; i < final_next_secondary + 0x100; i += 8)
+    {
+      size_t j;
+
+      printf (" ");
+      for (j = i; j < final_next_secondary + 0x100 && j < i + 8; ++j)
+	printf (" %#x,", table[j]);
+      printf ("\n");
+    }
+  printf ("};\n");
+
+  return 0;
+}
+
+#endif
+
+/* The fixed tables generated by the #ifdef'ed out main function
+   above.  */
+
+static const uint16_t elf_zlib_default_table[0x170] =
+{
+  0xd00, 0xe50, 0xe10, 0xf18, 0xd10, 0xe70, 0xe30, 0x1230,
+  0xd08, 0xe60, 0xe20, 0x1210, 0xe00, 0xe80, 0xe40, 0x1250,
+  0xd04, 0xe58, 0xe18, 0x1200, 0xd14, 0xe78, 0xe38, 0x1240,
+  0xd0c, 0xe68, 0xe28, 0x1220, 0xe08, 0xe88, 0xe48, 0x1260,
+  0xd02, 0xe54, 0xe14, 0xf1c, 0xd12, 0xe74, 0xe34, 0x1238,
+  0xd0a, 0xe64, 0xe24, 0x1218, 0xe04, 0xe84, 0xe44, 0x1258,
+  0xd06, 0xe5c, 0xe1c, 0x1208, 0xd16, 0xe7c, 0xe3c, 0x1248,
+  0xd0e, 0xe6c, 0xe2c, 0x1228, 0xe0c, 0xe8c, 0xe4c, 0x1268,
+  0xd01, 0xe52, 0xe12, 0xf1a, 0xd11, 0xe72, 0xe32, 0x1234,
+  0xd09, 0xe62, 0xe22, 0x1214, 0xe02, 0xe82, 0xe42, 0x1254,
+  0xd05, 0xe5a, 0xe1a, 0x1204, 0xd15, 0xe7a, 0xe3a, 0x1244,
+  0xd0d, 0xe6a, 0xe2a, 0x1224, 0xe0a, 0xe8a, 0xe4a, 0x1264,
+  0xd03, 0xe56, 0xe16, 0xf1e, 0xd13, 0xe76, 0xe36, 0x123c,
+  0xd0b, 0xe66, 0xe26, 0x121c, 0xe06, 0xe86, 0xe46, 0x125c,
+  0xd07, 0xe5e, 0xe1e, 0x120c, 0xd17, 0xe7e, 0xe3e, 0x124c,
+  0xd0f, 0xe6e, 0xe2e, 0x122c, 0xe0e, 0xe8e, 0xe4e, 0x126c,
+  0xd00, 0xe51, 0xe11, 0xf19, 0xd10, 0xe71, 0xe31, 0x1232,
+  0xd08, 0xe61, 0xe21, 0x1212, 0xe01, 0xe81, 0xe41, 0x1252,
+  0xd04, 0xe59, 0xe19, 0x1202, 0xd14, 0xe79, 0xe39, 0x1242,
+  0xd0c, 0xe69, 0xe29, 0x1222, 0xe09, 0xe89, 0xe49, 0x1262,
+  0xd02, 0xe55, 0xe15, 0xf1d, 0xd12, 0xe75, 0xe35, 0x123a,
+  0xd0a, 0xe65, 0xe25, 0x121a, 0xe05, 0xe85, 0xe45, 0x125a,
+  0xd06, 0xe5d, 0xe1d, 0x120a, 0xd16, 0xe7d, 0xe3d, 0x124a,
+  0xd0e, 0xe6d, 0xe2d, 0x122a, 0xe0d, 0xe8d, 0xe4d, 0x126a,
+  0xd01, 0xe53, 0xe13, 0xf1b, 0xd11, 0xe73, 0xe33, 0x1236,
+  0xd09, 0xe63, 0xe23, 0x1216, 0xe03, 0xe83, 0xe43, 0x1256,
+  0xd05, 0xe5b, 0xe1b, 0x1206, 0xd15, 0xe7b, 0xe3b, 0x1246,
+  0xd0d, 0xe6b, 0xe2b, 0x1226, 0xe0b, 0xe8b, 0xe4b, 0x1266,
+  0xd03, 0xe57, 0xe17, 0xf1f, 0xd13, 0xe77, 0xe37, 0x123e,
+  0xd0b, 0xe67, 0xe27, 0x121e, 0xe07, 0xe87, 0xe47, 0x125e,
+  0xd07, 0xe5f, 0xe1f, 0x120e, 0xd17, 0xe7f, 0xe3f, 0x124e,
+  0xd0f, 0xe6f, 0xe2f, 0x122e, 0xe0f, 0xe8f, 0xe4f, 0x126e,
+  0x290, 0x291, 0x292, 0x293, 0x294, 0x295, 0x296, 0x297,
+  0x298, 0x299, 0x29a, 0x29b, 0x29c, 0x29d, 0x29e, 0x29f,
+  0x2a0, 0x2a1, 0x2a2, 0x2a3, 0x2a4, 0x2a5, 0x2a6, 0x2a7,
+  0x2a8, 0x2a9, 0x2aa, 0x2ab, 0x2ac, 0x2ad, 0x2ae, 0x2af,
+  0x2b0, 0x2b1, 0x2b2, 0x2b3, 0x2b4, 0x2b5, 0x2b6, 0x2b7,
+  0x2b8, 0x2b9, 0x2ba, 0x2bb, 0x2bc, 0x2bd, 0x2be, 0x2bf,
+  0x2c0, 0x2c1, 0x2c2, 0x2c3, 0x2c4, 0x2c5, 0x2c6, 0x2c7,
+  0x2c8, 0x2c9, 0x2ca, 0x2cb, 0x2cc, 0x2cd, 0x2ce, 0x2cf,
+  0x2d0, 0x2d1, 0x2d2, 0x2d3, 0x2d4, 0x2d5, 0x2d6, 0x2d7,
+  0x2d8, 0x2d9, 0x2da, 0x2db, 0x2dc, 0x2dd, 0x2de, 0x2df,
+  0x2e0, 0x2e1, 0x2e2, 0x2e3, 0x2e4, 0x2e5, 0x2e6, 0x2e7,
+  0x2e8, 0x2e9, 0x2ea, 0x2eb, 0x2ec, 0x2ed, 0x2ee, 0x2ef,
+  0x2f0, 0x2f1, 0x2f2, 0x2f3, 0x2f4, 0x2f5, 0x2f6, 0x2f7,
+  0x2f8, 0x2f9, 0x2fa, 0x2fb, 0x2fc, 0x2fd, 0x2fe, 0x2ff,
+};
+
+static const uint16_t elf_zlib_default_dist_table[0x100] =
+{
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+  0x800, 0x810, 0x808, 0x818, 0x804, 0x814, 0x80c, 0x81c,
+  0x802, 0x812, 0x80a, 0x81a, 0x806, 0x816, 0x80e, 0x81e,
+  0x801, 0x811, 0x809, 0x819, 0x805, 0x815, 0x80d, 0x81d,
+  0x803, 0x813, 0x80b, 0x81b, 0x807, 0x817, 0x80f, 0x81f,
+};
+
+/* Inflate a zlib stream from PIN/SIN to POUT/SOUT.  Return 1 on
+   success, 0 on some error parsing the stream.  */
+
+static int
+elf_zlib_inflate (const unsigned char *pin, size_t sin, uint16_t *zdebug_table,
+		  unsigned char *pout, size_t sout)
+{
+  unsigned char *porigout;
+  const unsigned char *pinend;
+  unsigned char *poutend;
+
+  /* We can apparently see multiple zlib streams concatenated
+     together, so keep going as long as there is something to read.
+     The last 4 bytes are the checksum.  */
+  porigout = pout;
+  pinend = pin + sin;
+  poutend = pout + sout;
+  while ((pinend - pin) > 4)
+    {
+      uint64_t val;
+      unsigned int bits;
+      int last;
+
+      /* Read the two byte zlib header.  */
+
+      if (unlikely ((pin[0] & 0xf) != 8)) /* 8 is zlib encoding.  */
+	{
+	  /* Unknown compression method.  */
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      if (unlikely ((pin[0] >> 4) > 7))
+	{
+	  /* Window size too large.  Other than this check, we don't
+	     care about the window size.  */
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      if (unlikely ((pin[1] & 0x20) != 0))
+	{
+	  /* Stream expects a predefined dictionary, but we have no
+	     dictionary.  */
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      val = (pin[0] << 8) | pin[1];
+      if (unlikely (val % 31 != 0))
+	{
+	  /* Header check failure.  */
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      pin += 2;
+
+      /* Align PIN to a 32-bit boundary.  */
+
+      val = 0;
+      bits = 0;
+      while ((((uintptr_t) pin) & 3) != 0)
+	{
+	  val |= (uint64_t)*pin << bits;
+	  bits += 8;
+	  ++pin;
+	}
+
+      /* Read blocks until one is marked last.  */
+
+      last = 0;
+
+      while (!last)
+	{
+	  unsigned int type;
+	  const uint16_t *tlit;
+	  const uint16_t *tdist;
+
+	  if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+	    return 0;
+
+	  last = val & 1;
+	  type = (val >> 1) & 3;
+	  val >>= 3;
+	  bits -= 3;
+
+	  if (unlikely (type == 3))
+	    {
+	      /* Invalid block type.  */
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  if (type == 0)
+	    {
+	      uint16_t len;
+	      uint16_t lenc;
+
+	      /* An uncompressed block.  */
+
+	      /* If we've read ahead more than a byte, back up.  */
+	      while (bits >= 8)
+		{
+		  --pin;
+		  bits -= 8;
+		}
+
+	      val = 0;
+	      bits = 0;
+	      if (unlikely ((pinend - pin) < 4))
+		{
+		  /* Missing length.  */
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      len = pin[0] | (pin[1] << 8);
+	      lenc = pin[2] | (pin[3] << 8);
+	      pin += 4;
+	      lenc = ~lenc;
+	      if (unlikely (len != lenc))
+		{
+		  /* Corrupt data.  */
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      if (unlikely (len > (unsigned int) (pinend - pin)
+			    || len > (unsigned int) (poutend - pout)))
+		{
+		  /* Not enough space in buffers.  */
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      memcpy (pout, pin, len);
+	      pout += len;
+	      pin += len;
+
+	      /* Align PIN.  */
+	      while ((((uintptr_t) pin) & 3) != 0)
+		{
+		  val |= (uint64_t)*pin << bits;
+		  bits += 8;
+		  ++pin;
+		}
+
+	      /* Go around to read the next block.  */
+	      continue;
+	    }
+
+	  if (type == 1)
+	    {
+	      tlit = elf_zlib_default_table;
+	      tdist = elf_zlib_default_dist_table;
+	    }
+	  else
+	    {
+	      unsigned int nlit;
+	      unsigned int ndist;
+	      unsigned int nclen;
+	      unsigned char codebits[19];
+	      unsigned char *plenbase;
+	      unsigned char *plen;
+	      unsigned char *plenend;
+
+	      /* Read a Huffman encoding table.  The various magic
+		 numbers here are from RFC 1951.  */
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      nlit = (val & 0x1f) + 257;
+	      val >>= 5;
+	      ndist = (val & 0x1f) + 1;
+	      val >>= 5;
+	      nclen = (val & 0xf) + 4;
+	      val >>= 4;
+	      bits -= 14;
+	      if (unlikely (nlit > 286 || ndist > 30))
+		{
+		  /* Values out of range.  */
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+
+	      /* Read and build the table used to compress the
+		 literal, length, and distance codes.  */
+
+	      memset(&codebits[0], 0, 19);
+
+	      /* There are always at least 4 elements in the
+		 table.  */
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      codebits[16] = val & 7;
+	      codebits[17] = (val >> 3) & 7;
+	      codebits[18] = (val >> 6) & 7;
+	      codebits[0] = (val >> 9) & 7;
+	      val >>= 12;
+	      bits -= 12;
+
+	      if (nclen == 4)
+		goto codebitsdone;
+
+	      codebits[8] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 5)
+		goto codebitsdone;
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      codebits[7] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 6)
+		goto codebitsdone;
+
+	      codebits[9] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 7)
+		goto codebitsdone;
+
+	      codebits[6] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 8)
+		goto codebitsdone;
+
+	      codebits[10] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 9)
+		goto codebitsdone;
+
+	      codebits[5] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 10)
+		goto codebitsdone;
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      codebits[11] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 11)
+		goto codebitsdone;
+
+	      codebits[4] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 12)
+		goto codebitsdone;
+
+	      codebits[12] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 13)
+		goto codebitsdone;
+
+	      codebits[3] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 14)
+		goto codebitsdone;
+
+	      codebits[13] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 15)
+		goto codebitsdone;
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      codebits[2] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 16)
+		goto codebitsdone;
+
+	      codebits[14] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 17)
+		goto codebitsdone;
+
+	      codebits[1] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	      if (nclen == 18)
+		goto codebitsdone;
+
+	      codebits[15] = val & 7;
+	      val >>= 3;
+	      bits -= 3;
+
+	    codebitsdone:
+
+	      if (!elf_zlib_inflate_table (codebits, 19, zdebug_table,
+					   zdebug_table))
+		return 0;
+
+	      /* Read the compressed bit lengths of the literal,
+		 length, and distance codes.  We have allocated space
+		 at the end of zdebug_table to hold them.  */
+
+	      plenbase = (((unsigned char *) zdebug_table)
+			  + ZDEBUG_TABLE_CODELEN_OFFSET);
+	      plen = plenbase;
+	      plenend = plen + nlit + ndist;
+	      while (plen < plenend)
+		{
+		  uint16_t t;
+		  unsigned int b;
+		  uint16_t v;
+
+		  if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		    return 0;
+
+		  t = zdebug_table[val & 0xff];
+
+		  /* The compression here uses bit lengths up to 7, so
+		     a secondary table is never necessary.  */
+		  if (unlikely ((t & (1U << HUFFMAN_SECONDARY_SHIFT)) != 0))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+
+		  b = (t >> HUFFMAN_BITS_SHIFT) & HUFFMAN_BITS_MASK;
+		  val >>= b + 1;
+		  bits -= b + 1;
+
+		  v = t & HUFFMAN_VALUE_MASK;
+		  if (v < 16)
+		    *plen++ = v;
+		  else if (v == 16)
+		    {
+		      unsigned int c;
+		      unsigned int prev;
+
+		      /* Copy previous entry 3 to 6 times.  */
+
+		      if (unlikely (plen == plenbase))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      /* We used up to 7 bits since the last
+			 elf_zlib_fetch, so we have at least 8 bits
+			 available here.  */
+
+		      c = 3 + (val & 0x3);
+		      val >>= 2;
+		      bits -= 2;
+		      if (unlikely ((unsigned int) (plenend - plen) < c))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      prev = plen[-1];
+		      switch (c)
+			{
+			case 6:
+			  *plen++ = prev;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 5:
+			  *plen++ = prev;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 4:
+			  *plen++ = prev;
+			}
+		      *plen++ = prev;
+		      *plen++ = prev;
+		      *plen++ = prev;
+		    }
+		  else if (v == 17)
+		    {
+		      unsigned int c;
+
+		      /* Store zero 3 to 10 times.  */
+
+		      /* We used up to 7 bits since the last
+			 elf_zlib_fetch, so we have at least 8 bits
+			 available here.  */
+
+		      c = 3 + (val & 0x7);
+		      val >>= 3;
+		      bits -= 3;
+		      if (unlikely ((unsigned int) (plenend - plen) < c))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      switch (c)
+			{
+			case 10:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 9:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 8:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 7:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 6:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 5:
+			  *plen++ = 0;
+			  ATTRIBUTE_FALLTHROUGH;
+			case 4:
+			  *plen++ = 0;
+			}
+		      *plen++ = 0;
+		      *plen++ = 0;
+		      *plen++ = 0;
+		    }
+		  else if (v == 18)
+		    {
+		      unsigned int c;
+
+		      /* Store zero 11 to 138 times.  */
+
+		      /* We used up to 7 bits since the last
+			 elf_zlib_fetch, so we have at least 8 bits
+			 available here.  */
+
+		      c = 11 + (val & 0x7f);
+		      val >>= 7;
+		      bits -= 7;
+		      if (unlikely ((unsigned int) (plenend - plen) < c))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      memset (plen, 0, c);
+		      plen += c;
+		    }
+		  else
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		}
+
+	      /* Make sure that the stop code can appear.  */
+
+	      plen = plenbase;
+	      if (unlikely (plen[256] == 0))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+
+	      /* Build the decompression tables.  */
+
+	      if (!elf_zlib_inflate_table (plen, nlit, zdebug_table,
+					   zdebug_table))
+		return 0;
+	      if (!elf_zlib_inflate_table (plen + nlit, ndist, zdebug_table,
+					   zdebug_table + HUFFMAN_TABLE_SIZE))
+		return 0;
+	      tlit = zdebug_table;
+	      tdist = zdebug_table + HUFFMAN_TABLE_SIZE;
+	    }
+
+	  /* Inflate values until the end of the block.  This is the
+	     main loop of the inflation code.  */
+
+	  while (1)
+	    {
+	      uint16_t t;
+	      unsigned int b;
+	      uint16_t v;
+	      unsigned int lit;
+
+	      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		return 0;
+
+	      t = tlit[val & 0xff];
+	      b = (t >> HUFFMAN_BITS_SHIFT) & HUFFMAN_BITS_MASK;
+	      v = t & HUFFMAN_VALUE_MASK;
+
+	      if ((t & (1U << HUFFMAN_SECONDARY_SHIFT)) == 0)
+		{
+		  lit = v;
+		  val >>= b + 1;
+		  bits -= b + 1;
+		}
+	      else
+		{
+		  t = tlit[v + 0x100 + ((val >> 8) & ((1U << b) - 1))];
+		  b = (t >> HUFFMAN_BITS_SHIFT) & HUFFMAN_BITS_MASK;
+		  lit = t & HUFFMAN_VALUE_MASK;
+		  val >>= b + 8;
+		  bits -= b + 8;
+		}
+
+	      if (lit < 256)
+		{
+		  if (unlikely (pout == poutend))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+
+		  *pout++ = lit;
+
+		  /* We will need to write the next byte soon.  We ask
+		     for high temporal locality because we will write
+		     to the whole cache line soon.  */
+		  __builtin_prefetch (pout, 1, 3);
+		}
+	      else if (lit == 256)
+		{
+		  /* The end of the block.  */
+		  break;
+		}
+	      else
+		{
+		  unsigned int dist;
+		  unsigned int len;
+
+		  /* Convert lit into a length.  */
+
+		  if (lit < 265)
+		    len = lit - 257 + 3;
+		  else if (lit == 285)
+		    len = 258;
+		  else if (unlikely (lit > 285))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		  else
+		    {
+		      unsigned int extra;
+
+		      if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+			return 0;
+
+		      /* This is an expression for the table of length
+			 codes in RFC 1951 3.2.5.  */
+		      lit -= 265;
+		      extra = (lit >> 2) + 1;
+		      len = (lit & 3) << extra;
+		      len += 11;
+		      len += ((1U << (extra - 1)) - 1) << 3;
+		      len += val & ((1U << extra) - 1);
+		      val >>= extra;
+		      bits -= extra;
+		    }
+
+		  if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+		    return 0;
+
+		  t = tdist[val & 0xff];
+		  b = (t >> HUFFMAN_BITS_SHIFT) & HUFFMAN_BITS_MASK;
+		  v = t & HUFFMAN_VALUE_MASK;
+
+		  if ((t & (1U << HUFFMAN_SECONDARY_SHIFT)) == 0)
+		    {
+		      dist = v;
+		      val >>= b + 1;
+		      bits -= b + 1;
+		    }
+		  else
+		    {
+		      t = tdist[v + 0x100 + ((val >> 8) & ((1U << b) - 1))];
+		      b = (t >> HUFFMAN_BITS_SHIFT) & HUFFMAN_BITS_MASK;
+		      dist = t & HUFFMAN_VALUE_MASK;
+		      val >>= b + 8;
+		      bits -= b + 8;
+		    }
+
+		  /* Convert dist to a distance.  */
+
+		  if (dist == 0)
+		    {
+		      /* A distance of 1.  A common case, meaning
+			 repeat the last character LEN times.  */
+
+		      if (unlikely (pout == porigout))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      if (unlikely ((unsigned int) (poutend - pout) < len))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      memset (pout, pout[-1], len);
+		      pout += len;
+		    }
+		  else if (unlikely (dist > 29))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		  else
+		    {
+		      if (dist < 4)
+			dist = dist + 1;
+		      else
+			{
+			  unsigned int extra;
+
+			  if (!elf_zlib_fetch (&pin, pinend, &val, &bits))
+			    return 0;
+
+			  /* This is an expression for the table of
+			     distance codes in RFC 1951 3.2.5.  */
+			  dist -= 4;
+			  extra = (dist >> 1) + 1;
+			  dist = (dist & 1) << extra;
+			  dist += 5;
+			  dist += ((1U << (extra - 1)) - 1) << 2;
+			  dist += val & ((1U << extra) - 1);
+			  val >>= extra;
+			  bits -= extra;
+			}
+
+		      /* Go back dist bytes, and copy len bytes from
+			 there.  */
+
+		      if (unlikely ((unsigned int) (pout - porigout) < dist))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      if (unlikely ((unsigned int) (poutend - pout) < len))
+			{
+			  elf_uncompress_failed ();
+			  return 0;
+			}
+
+		      if (dist >= len)
+			{
+			  memcpy (pout, pout - dist, len);
+			  pout += len;
+			}
+		      else
+			{
+			  while (len > 0)
+			    {
+			      unsigned int copy;
+
+			      copy = len < dist ? len : dist;
+			      memcpy (pout, pout - dist, copy);
+			      len -= copy;
+			      pout += copy;
+			    }
+			}
+		    }
+		}
+	    }
+	}
+    }
+
+  /* We should have filled the output buffer.  */
+  if (unlikely (pout != poutend))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  return 1;
+}
+
+/* Verify the zlib checksum.  The checksum is in the 4 bytes at
+   CHECKBYTES, and the uncompressed data is at UNCOMPRESSED /
+   UNCOMPRESSED_SIZE.  Returns 1 on success, 0 on failure.  */
+
+static int
+elf_zlib_verify_checksum (const unsigned char *checkbytes,
+			  const unsigned char *uncompressed,
+			  size_t uncompressed_size)
+{
+  unsigned int i;
+  unsigned int cksum;
+  const unsigned char *p;
+  uint32_t s1;
+  uint32_t s2;
+  size_t hsz;
+
+  cksum = 0;
+  for (i = 0; i < 4; i++)
+    cksum = (cksum << 8) | checkbytes[i];
+
+  s1 = 1;
+  s2 = 0;
+
+  /* Minimize modulo operations.  */
+
+  p = uncompressed;
+  hsz = uncompressed_size;
+  while (hsz >= 5552)
+    {
+      for (i = 0; i < 5552; i += 16)
+	{
+	  /* Manually unroll loop 16 times.  */
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	  s1 = s1 + *p++;
+	  s2 = s2 + s1;
+	}
+      hsz -= 5552;
+      s1 %= 65521;
+      s2 %= 65521;
+    }
+
+  while (hsz >= 16)
+    {
+      /* Manually unroll loop 16 times.  */
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+
+      hsz -= 16;
+    }
+
+  for (i = 0; i < hsz; ++i)
+    {
+      s1 = s1 + *p++;
+      s2 = s2 + s1;
+    }
+
+  s1 %= 65521;
+  s2 %= 65521;
+
+  if (unlikely ((s2 << 16) + s1 != cksum))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  return 1;
+}
+
+/* Inflate a zlib stream from PIN/SIN to POUT/SOUT, and verify the
+   checksum.  Return 1 on success, 0 on error.  */
+
+static int
+elf_zlib_inflate_and_verify (const unsigned char *pin, size_t sin,
+			     uint16_t *zdebug_table, unsigned char *pout,
+			     size_t sout)
+{
+  if (!elf_zlib_inflate (pin, sin, zdebug_table, pout, sout))
+    return 0;
+  if (!elf_zlib_verify_checksum (pin + sin - 4, pout, sout))
+    return 0;
+  return 1;
+}
+
+/* Uncompress the old compressed debug format, the one emitted by
+   --compress-debug-sections=zlib-gnu.  The compressed data is in
+   COMPRESSED / COMPRESSED_SIZE, and the function writes to
+   *UNCOMPRESSED / *UNCOMPRESSED_SIZE.  ZDEBUG_TABLE is work space to
+   hold Huffman tables.  Returns 0 on error, 1 on successful
+   decompression or if something goes wrong.  In general we try to
+   carry on, by returning 1, even if we can't decompress.  */
+
+static int
+elf_uncompress_zdebug (struct backtrace_state *state,
+		       const unsigned char *compressed, size_t compressed_size,
+		       uint16_t *zdebug_table,
+		       backtrace_error_callback error_callback, void *data,
+		       unsigned char **uncompressed, size_t *uncompressed_size)
+{
+  size_t sz;
+  size_t i;
+  unsigned char *po;
+
+  *uncompressed = NULL;
+  *uncompressed_size = 0;
+
+  /* The format starts with the four bytes ZLIB, followed by the 8
+     byte length of the uncompressed data in big-endian order,
+     followed by a zlib stream.  */
+
+  if (compressed_size < 12 || memcmp (compressed, "ZLIB", 4) != 0)
+    return 1;
+
+  sz = 0;
+  for (i = 0; i < 8; i++)
+    sz = (sz << 8) | compressed[i + 4];
+
+  if (*uncompressed != NULL && *uncompressed_size >= sz)
+    po = *uncompressed;
+  else
+    {
+      po = (unsigned char *) backtrace_alloc (state, sz, error_callback, data);
+      if (po == NULL)
+	return 0;
+    }
+
+  if (!elf_zlib_inflate_and_verify (compressed + 12, compressed_size - 12,
+				    zdebug_table, po, sz))
+    return 1;
+
+  *uncompressed = po;
+  *uncompressed_size = sz;
+
+  return 1;
+}
+
+/* Uncompress the new compressed debug format, the official standard
+   ELF approach emitted by --compress-debug-sections=zlib-gabi.  The
+   compressed data is in COMPRESSED / COMPRESSED_SIZE, and the
+   function writes to *UNCOMPRESSED / *UNCOMPRESSED_SIZE.
+   ZDEBUG_TABLE is work space as for elf_uncompress_zdebug.  Returns 0
+   on error, 1 on successful decompression or if something goes wrong.
+   In general we try to carry on, by returning 1, even if we can't
+   decompress.  */
+
+static int
+elf_uncompress_chdr (struct backtrace_state *state,
+		     const unsigned char *compressed, size_t compressed_size,
+		     uint16_t *zdebug_table,
+		     backtrace_error_callback error_callback, void *data,
+		     unsigned char **uncompressed, size_t *uncompressed_size)
+{
+  const b_elf_chdr *chdr;
+  unsigned char *po;
+
+  *uncompressed = NULL;
+  *uncompressed_size = 0;
+
+  /* The format starts with an ELF compression header.  */
+  if (compressed_size < sizeof (b_elf_chdr))
+    return 1;
+
+  chdr = (const b_elf_chdr *) compressed;
+
+  if (chdr->ch_type != ELFCOMPRESS_ZLIB)
+    {
+      /* Unsupported compression algorithm.  */
+      return 1;
+    }
+
+  if (*uncompressed != NULL && *uncompressed_size >= chdr->ch_size)
+    po = *uncompressed;
+  else
+    {
+      po = (unsigned char *) backtrace_alloc (state, chdr->ch_size,
+					      error_callback, data);
+      if (po == NULL)
+	return 0;
+    }
+
+  if (!elf_zlib_inflate_and_verify (compressed + sizeof (b_elf_chdr),
+				    compressed_size - sizeof (b_elf_chdr),
+				    zdebug_table, po, chdr->ch_size))
+    return 1;
+
+  *uncompressed = po;
+  *uncompressed_size = chdr->ch_size;
+
+  return 1;
+}
+
+/* This function is a hook for testing the zlib support.  It is only
+   used by tests.  */
+
+int
+backtrace_uncompress_zdebug (struct backtrace_state *state,
+			     const unsigned char *compressed,
+			     size_t compressed_size,
+			     backtrace_error_callback error_callback,
+			     void *data, unsigned char **uncompressed,
+			     size_t *uncompressed_size)
+{
+  uint16_t *zdebug_table;
+  int ret;
+
+  zdebug_table = ((uint16_t *) backtrace_alloc (state, ZDEBUG_TABLE_SIZE,
+						error_callback, data));
+  if (zdebug_table == NULL)
+    return 0;
+  ret = elf_uncompress_zdebug (state, compressed, compressed_size,
+			       zdebug_table, error_callback, data,
+			       uncompressed, uncompressed_size);
+  backtrace_free (state, zdebug_table, ZDEBUG_TABLE_SIZE,
+		  error_callback, data);
+  return ret;
+}
+
+/* Number of LZMA states.  */
+#define LZMA_STATES (12)
+
+/* Number of LZMA position states.  The pb value of the property byte
+   is the number of bits to include in these states, and the maximum
+   value of pb is 4.  */
+#define LZMA_POS_STATES (16)
+
+/* Number of LZMA distance states.  These are used match distances
+   with a short match length: up to 4 bytes.  */
+#define LZMA_DIST_STATES (4)
+
+/* Number of LZMA distance slots.  LZMA uses six bits to encode larger
+   match lengths, so 1 << 6 possible probabilities.  */
+#define LZMA_DIST_SLOTS (64)
+
+/* LZMA distances 0 to 3 are encoded directly, larger values use a
+   probability model.  */
+#define LZMA_DIST_MODEL_START (4)
+
+/* The LZMA probability model ends at 14.  */
+#define LZMA_DIST_MODEL_END (14)
+
+/* LZMA distance slots for distances less than 127.  */
+#define LZMA_FULL_DISTANCES (128)
+
+/* LZMA uses four alignment bits.  */
+#define LZMA_ALIGN_SIZE (16)
+
+/* LZMA match length is encoded with 4, 5, or 10 bits, some of which
+   are already known.  */
+#define LZMA_LEN_LOW_SYMBOLS (8)
+#define LZMA_LEN_MID_SYMBOLS (8)
+#define LZMA_LEN_HIGH_SYMBOLS (256)
+
+/* LZMA literal encoding.  */
+#define LZMA_LITERAL_CODERS_MAX (16)
+#define LZMA_LITERAL_CODER_SIZE (0x300)
+
+/* LZMA is based on a large set of probabilities, each managed
+   independently.  Each probability is an 11 bit number that we store
+   in a uint16_t.  We use a single large array of probabilities.  */
+
+/* Lengths of entries in the LZMA probabilities array.  The names used
+   here are copied from the Linux kernel implementation.  */
+
+#define LZMA_PROB_IS_MATCH_LEN (LZMA_STATES * LZMA_POS_STATES)
+#define LZMA_PROB_IS_REP_LEN LZMA_STATES
+#define LZMA_PROB_IS_REP0_LEN LZMA_STATES
+#define LZMA_PROB_IS_REP1_LEN LZMA_STATES
+#define LZMA_PROB_IS_REP2_LEN LZMA_STATES
+#define LZMA_PROB_IS_REP0_LONG_LEN (LZMA_STATES * LZMA_POS_STATES)
+#define LZMA_PROB_DIST_SLOT_LEN (LZMA_DIST_STATES * LZMA_DIST_SLOTS)
+#define LZMA_PROB_DIST_SPECIAL_LEN (LZMA_FULL_DISTANCES - LZMA_DIST_MODEL_END)
+#define LZMA_PROB_DIST_ALIGN_LEN LZMA_ALIGN_SIZE
+#define LZMA_PROB_MATCH_LEN_CHOICE_LEN 1
+#define LZMA_PROB_MATCH_LEN_CHOICE2_LEN 1
+#define LZMA_PROB_MATCH_LEN_LOW_LEN (LZMA_POS_STATES * LZMA_LEN_LOW_SYMBOLS)
+#define LZMA_PROB_MATCH_LEN_MID_LEN (LZMA_POS_STATES * LZMA_LEN_MID_SYMBOLS)
+#define LZMA_PROB_MATCH_LEN_HIGH_LEN LZMA_LEN_HIGH_SYMBOLS
+#define LZMA_PROB_REP_LEN_CHOICE_LEN 1
+#define LZMA_PROB_REP_LEN_CHOICE2_LEN 1
+#define LZMA_PROB_REP_LEN_LOW_LEN (LZMA_POS_STATES * LZMA_LEN_LOW_SYMBOLS)
+#define LZMA_PROB_REP_LEN_MID_LEN (LZMA_POS_STATES * LZMA_LEN_MID_SYMBOLS)
+#define LZMA_PROB_REP_LEN_HIGH_LEN LZMA_LEN_HIGH_SYMBOLS
+#define LZMA_PROB_LITERAL_LEN \
+  (LZMA_LITERAL_CODERS_MAX * LZMA_LITERAL_CODER_SIZE)
+
+/* Offsets into the LZMA probabilities array.  This is mechanically
+   generated from the above lengths.  */
+
+#define LZMA_PROB_IS_MATCH_OFFSET 0
+#define LZMA_PROB_IS_REP_OFFSET \
+  (LZMA_PROB_IS_MATCH_OFFSET + LZMA_PROB_IS_MATCH_LEN)
+#define LZMA_PROB_IS_REP0_OFFSET \
+  (LZMA_PROB_IS_REP_OFFSET + LZMA_PROB_IS_REP_LEN)
+#define LZMA_PROB_IS_REP1_OFFSET \
+  (LZMA_PROB_IS_REP0_OFFSET + LZMA_PROB_IS_REP0_LEN)
+#define LZMA_PROB_IS_REP2_OFFSET \
+  (LZMA_PROB_IS_REP1_OFFSET + LZMA_PROB_IS_REP1_LEN)
+#define LZMA_PROB_IS_REP0_LONG_OFFSET \
+  (LZMA_PROB_IS_REP2_OFFSET + LZMA_PROB_IS_REP2_LEN)
+#define LZMA_PROB_DIST_SLOT_OFFSET \
+  (LZMA_PROB_IS_REP0_LONG_OFFSET + LZMA_PROB_IS_REP0_LONG_LEN)
+#define LZMA_PROB_DIST_SPECIAL_OFFSET \
+  (LZMA_PROB_DIST_SLOT_OFFSET + LZMA_PROB_DIST_SLOT_LEN)
+#define LZMA_PROB_DIST_ALIGN_OFFSET \
+  (LZMA_PROB_DIST_SPECIAL_OFFSET + LZMA_PROB_DIST_SPECIAL_LEN)
+#define LZMA_PROB_MATCH_LEN_CHOICE_OFFSET \
+  (LZMA_PROB_DIST_ALIGN_OFFSET + LZMA_PROB_DIST_ALIGN_LEN)
+#define LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET \
+  (LZMA_PROB_MATCH_LEN_CHOICE_OFFSET + LZMA_PROB_MATCH_LEN_CHOICE_LEN)
+#define LZMA_PROB_MATCH_LEN_LOW_OFFSET \
+  (LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET + LZMA_PROB_MATCH_LEN_CHOICE2_LEN)
+#define LZMA_PROB_MATCH_LEN_MID_OFFSET \
+  (LZMA_PROB_MATCH_LEN_LOW_OFFSET + LZMA_PROB_MATCH_LEN_LOW_LEN)
+#define LZMA_PROB_MATCH_LEN_HIGH_OFFSET \
+  (LZMA_PROB_MATCH_LEN_MID_OFFSET + LZMA_PROB_MATCH_LEN_MID_LEN)
+#define LZMA_PROB_REP_LEN_CHOICE_OFFSET \
+  (LZMA_PROB_MATCH_LEN_HIGH_OFFSET + LZMA_PROB_MATCH_LEN_HIGH_LEN)
+#define LZMA_PROB_REP_LEN_CHOICE2_OFFSET \
+  (LZMA_PROB_REP_LEN_CHOICE_OFFSET + LZMA_PROB_REP_LEN_CHOICE_LEN)
+#define LZMA_PROB_REP_LEN_LOW_OFFSET \
+  (LZMA_PROB_REP_LEN_CHOICE2_OFFSET + LZMA_PROB_REP_LEN_CHOICE2_LEN)
+#define LZMA_PROB_REP_LEN_MID_OFFSET \
+  (LZMA_PROB_REP_LEN_LOW_OFFSET + LZMA_PROB_REP_LEN_LOW_LEN)
+#define LZMA_PROB_REP_LEN_HIGH_OFFSET \
+  (LZMA_PROB_REP_LEN_MID_OFFSET + LZMA_PROB_REP_LEN_MID_LEN)
+#define LZMA_PROB_LITERAL_OFFSET \
+  (LZMA_PROB_REP_LEN_HIGH_OFFSET + LZMA_PROB_REP_LEN_HIGH_LEN)
+
+#define LZMA_PROB_TOTAL_COUNT \
+  (LZMA_PROB_LITERAL_OFFSET + LZMA_PROB_LITERAL_LEN)
+
+/* Check that the number of LZMA probabilities is the same as the
+   Linux kernel implementation.  */
+
+#if LZMA_PROB_TOTAL_COUNT != 1846 + (1 << 4) * 0x300
+ #error Wrong number of LZMA probabilities
+#endif
+
+/* Expressions for the offset in the LZMA probabilities array of a
+   specific probability.  */
+
+#define LZMA_IS_MATCH(state, pos) \
+  (LZMA_PROB_IS_MATCH_OFFSET + (state) * LZMA_POS_STATES + (pos))
+#define LZMA_IS_REP(state) \
+  (LZMA_PROB_IS_REP_OFFSET + (state))
+#define LZMA_IS_REP0(state) \
+  (LZMA_PROB_IS_REP0_OFFSET + (state))
+#define LZMA_IS_REP1(state) \
+  (LZMA_PROB_IS_REP1_OFFSET + (state))
+#define LZMA_IS_REP2(state) \
+  (LZMA_PROB_IS_REP2_OFFSET + (state))
+#define LZMA_IS_REP0_LONG(state, pos) \
+  (LZMA_PROB_IS_REP0_LONG_OFFSET + (state) * LZMA_POS_STATES + (pos))
+#define LZMA_DIST_SLOT(dist, slot) \
+  (LZMA_PROB_DIST_SLOT_OFFSET + (dist) * LZMA_DIST_SLOTS + (slot))
+#define LZMA_DIST_SPECIAL(dist) \
+  (LZMA_PROB_DIST_SPECIAL_OFFSET + (dist))
+#define LZMA_DIST_ALIGN(dist) \
+  (LZMA_PROB_DIST_ALIGN_OFFSET + (dist))
+#define LZMA_MATCH_LEN_CHOICE \
+  LZMA_PROB_MATCH_LEN_CHOICE_OFFSET
+#define LZMA_MATCH_LEN_CHOICE2 \
+  LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET
+#define LZMA_MATCH_LEN_LOW(pos, sym) \
+  (LZMA_PROB_MATCH_LEN_LOW_OFFSET + (pos) * LZMA_LEN_LOW_SYMBOLS + (sym))
+#define LZMA_MATCH_LEN_MID(pos, sym) \
+  (LZMA_PROB_MATCH_LEN_MID_OFFSET + (pos) * LZMA_LEN_MID_SYMBOLS + (sym))
+#define LZMA_MATCH_LEN_HIGH(sym) \
+  (LZMA_PROB_MATCH_LEN_HIGH_OFFSET + (sym))
+#define LZMA_REP_LEN_CHOICE \
+  LZMA_PROB_REP_LEN_CHOICE_OFFSET
+#define LZMA_REP_LEN_CHOICE2 \
+  LZMA_PROB_REP_LEN_CHOICE2_OFFSET
+#define LZMA_REP_LEN_LOW(pos, sym) \
+  (LZMA_PROB_REP_LEN_LOW_OFFSET + (pos) * LZMA_LEN_LOW_SYMBOLS + (sym))
+#define LZMA_REP_LEN_MID(pos, sym) \
+  (LZMA_PROB_REP_LEN_MID_OFFSET + (pos) * LZMA_LEN_MID_SYMBOLS + (sym))
+#define LZMA_REP_LEN_HIGH(sym) \
+  (LZMA_PROB_REP_LEN_HIGH_OFFSET + (sym))
+#define LZMA_LITERAL(code, size) \
+  (LZMA_PROB_LITERAL_OFFSET + (code) * LZMA_LITERAL_CODER_SIZE + (size))
+
+/* Read an LZMA varint from BUF, reading and updating *POFFSET,
+   setting *VAL.  Returns 0 on error, 1 on success.  */
+
+static int
+elf_lzma_varint (const unsigned char *compressed, size_t compressed_size,
+		 size_t *poffset, uint64_t *val)
+{
+  size_t off;
+  int i;
+  uint64_t v;
+  unsigned char b;
+
+  off = *poffset;
+  i = 0;
+  v = 0;
+  while (1)
+    {
+      if (unlikely (off >= compressed_size))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      b = compressed[off];
+      v |= (b & 0x7f) << (i * 7);
+      ++off;
+      if ((b & 0x80) == 0)
+	{
+	  *poffset = off;
+	  *val = v;
+	  return 1;
+	}
+      ++i;
+      if (unlikely (i >= 9))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+    }
+}
+
+/* Normalize the LZMA range decoder, pulling in an extra input byte if
+   needed.  */
+
+static void
+elf_lzma_range_normalize (const unsigned char *compressed,
+			  size_t compressed_size, size_t *poffset,
+			  uint32_t *prange, uint32_t *pcode)
+{
+  if (*prange < (1U << 24))
+    {
+      if (unlikely (*poffset >= compressed_size))
+	{
+	  /* We assume this will be caught elsewhere.  */
+	  elf_uncompress_failed ();
+	  return;
+	}
+      *prange <<= 8;
+      *pcode <<= 8;
+      *pcode += compressed[*poffset];
+      ++*poffset;
+    }
+}
+
+/* Read and return a single bit from the LZMA stream, reading and
+   updating *PROB.  Each bit comes from the range coder.  */
+
+static int
+elf_lzma_bit (const unsigned char *compressed, size_t compressed_size,
+	      uint16_t *prob, size_t *poffset, uint32_t *prange,
+	      uint32_t *pcode)
+{
+  uint32_t bound;
+
+  elf_lzma_range_normalize (compressed, compressed_size, poffset,
+			    prange, pcode);
+  bound = (*prange >> 11) * (uint32_t) *prob;
+  if (*pcode < bound)
+    {
+      *prange = bound;
+      *prob += ((1U << 11) - *prob) >> 5;
+      return 0;
+    }
+  else
+    {
+      *prange -= bound;
+      *pcode -= bound;
+      *prob -= *prob >> 5;
+      return 1;
+    }
+}
+
+/* Read an integer of size BITS from the LZMA stream, most significant
+   bit first.  The bits are predicted using PROBS.  */
+
+static uint32_t
+elf_lzma_integer (const unsigned char *compressed, size_t compressed_size,
+		  uint16_t *probs, uint32_t bits, size_t *poffset,
+		  uint32_t *prange, uint32_t *pcode)
+{
+  uint32_t sym;
+  uint32_t i;
+
+  sym = 1;
+  for (i = 0; i < bits; i++)
+    {
+      int bit;
+
+      bit = elf_lzma_bit (compressed, compressed_size, probs + sym, poffset,
+			  prange, pcode);
+      sym <<= 1;
+      sym += bit;
+    }
+  return sym - (1 << bits);
+}
+
+/* Read an integer of size BITS from the LZMA stream, least
+   significant bit first.  The bits are predicted using PROBS.  */
+
+static uint32_t
+elf_lzma_reverse_integer (const unsigned char *compressed,
+			  size_t compressed_size, uint16_t *probs,
+			  uint32_t bits, size_t *poffset, uint32_t *prange,
+			  uint32_t *pcode)
+{
+  uint32_t sym;
+  uint32_t val;
+  uint32_t i;
+
+  sym = 1;
+  val = 0;
+  for (i = 0; i < bits; i++)
+    {
+      int bit;
+
+      bit = elf_lzma_bit (compressed, compressed_size, probs + sym, poffset,
+			  prange, pcode);
+      sym <<= 1;
+      sym += bit;
+      val += bit << i;
+    }
+  return val;
+}
+
+/* Read a length from the LZMA stream.  IS_REP picks either LZMA_MATCH
+   or LZMA_REP probabilities.  */
+
+static uint32_t
+elf_lzma_len (const unsigned char *compressed, size_t compressed_size,
+	      uint16_t *probs, int is_rep, unsigned int pos_state,
+	      size_t *poffset, uint32_t *prange, uint32_t *pcode)
+{
+  uint16_t *probs_choice;
+  uint16_t *probs_sym;
+  uint32_t bits;
+  uint32_t len;
+
+  probs_choice = probs + (is_rep
+			  ? LZMA_REP_LEN_CHOICE
+			  : LZMA_MATCH_LEN_CHOICE);
+  if (elf_lzma_bit (compressed, compressed_size, probs_choice, poffset,
+		    prange, pcode))
+    {
+      probs_choice = probs + (is_rep
+			      ? LZMA_REP_LEN_CHOICE2
+			      : LZMA_MATCH_LEN_CHOICE2);
+      if (elf_lzma_bit (compressed, compressed_size, probs_choice,
+			poffset, prange, pcode))
+	{
+	  probs_sym = probs + (is_rep
+			       ? LZMA_REP_LEN_HIGH (0)
+			       : LZMA_MATCH_LEN_HIGH (0));
+	  bits = 8;
+	  len = 2 + 8 + 8;
+	}
+      else
+	{
+	  probs_sym = probs + (is_rep
+			       ? LZMA_REP_LEN_MID (pos_state, 0)
+			       : LZMA_MATCH_LEN_MID (pos_state, 0));
+	  bits = 3;
+	  len = 2 + 8;
+	}
+    }
+  else
+    {
+      probs_sym = probs + (is_rep
+			   ? LZMA_REP_LEN_LOW (pos_state, 0)
+			   : LZMA_MATCH_LEN_LOW (pos_state, 0));
+      bits = 3;
+      len = 2;
+    }
+
+  len += elf_lzma_integer (compressed, compressed_size, probs_sym, bits,
+			   poffset, prange, pcode);
+  return len;
+}
+
+/* Uncompress one LZMA block from a minidebug file.  The compressed
+   data is at COMPRESSED + *POFFSET.  Update *POFFSET.  Store the data
+   into the memory at UNCOMPRESSED, size UNCOMPRESSED_SIZE.  CHECK is
+   the stream flag from the xz header.  Return 1 on successful
+   decompression.  */
+
+static int
+elf_uncompress_lzma_block (const unsigned char *compressed,
+			   size_t compressed_size, unsigned char check,
+			   uint16_t *probs, unsigned char *uncompressed,
+			   size_t uncompressed_size, size_t *poffset)
+{
+  size_t off;
+  size_t block_header_offset;
+  size_t block_header_size;
+  unsigned char block_flags;
+  uint64_t header_compressed_size;
+  uint64_t header_uncompressed_size;
+  unsigned char lzma2_properties;
+  uint32_t computed_crc;
+  uint32_t stream_crc;
+  size_t uncompressed_offset;
+  size_t dict_start_offset;
+  unsigned int lc;
+  unsigned int lp;
+  unsigned int pb;
+  uint32_t range;
+  uint32_t code;
+  uint32_t lstate;
+  uint32_t dist[4];
+
+  off = *poffset;
+  block_header_offset = off;
+
+  /* Block header size is a single byte.  */
+  if (unlikely (off >= compressed_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  block_header_size = (compressed[off] + 1) * 4;
+  if (unlikely (off + block_header_size > compressed_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Block flags.  */
+  block_flags = compressed[off + 1];
+  if (unlikely ((block_flags & 0x3c) != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  off += 2;
+
+  /* Optional compressed size.  */
+  header_compressed_size = 0;
+  if ((block_flags & 0x40) != 0)
+    {
+      *poffset = off;
+      if (!elf_lzma_varint (compressed, compressed_size, poffset,
+			    &header_compressed_size))
+	return 0;
+      off = *poffset;
+    }
+
+  /* Optional uncompressed size.  */
+  header_uncompressed_size = 0;
+  if ((block_flags & 0x80) != 0)
+    {
+      *poffset = off;
+      if (!elf_lzma_varint (compressed, compressed_size, poffset,
+			    &header_uncompressed_size))
+	return 0;
+      off = *poffset;
+    }
+
+  /* The recipe for creating a minidebug file is to run the xz program
+     with no arguments, so we expect exactly one filter: lzma2.  */
+
+  if (unlikely ((block_flags & 0x3) != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  if (unlikely (off + 2 >= block_header_offset + block_header_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* The filter ID for LZMA2 is 0x21.  */
+  if (unlikely (compressed[off] != 0x21))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  ++off;
+
+  /* The size of the filter properties for LZMA2 is 1.  */
+  if (unlikely (compressed[off] != 1))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  ++off;
+
+  lzma2_properties = compressed[off];
+  ++off;
+
+  if (unlikely (lzma2_properties > 40))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* The properties describe the dictionary size, but we don't care
+     what that is.  */
+
+  /* Block header padding.  */
+  if (unlikely (off + 4 > compressed_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  off = (off + 3) &~ (size_t) 3;
+
+  if (unlikely (off + 4 > compressed_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Block header CRC.  */
+  computed_crc = elf_crc32 (0, compressed + block_header_offset,
+			    block_header_size - 4);
+  stream_crc = (compressed[off]
+		| (compressed[off + 1] << 8)
+		| (compressed[off + 2] << 16)
+		| (compressed[off + 3] << 24));
+  if (unlikely (computed_crc != stream_crc))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  off += 4;
+
+  /* Read a sequence of LZMA2 packets.  */
+
+  uncompressed_offset = 0;
+  dict_start_offset = 0;
+  lc = 0;
+  lp = 0;
+  pb = 0;
+  lstate = 0;
+  while (off < compressed_size)
+    {
+      unsigned char control;
+
+      range = 0xffffffff;
+      code = 0;
+
+      control = compressed[off];
+      ++off;
+      if (unlikely (control == 0))
+	{
+	  /* End of packets.  */
+	  break;
+	}
+
+      if (control == 1 || control >= 0xe0)
+	{
+	  /* Reset dictionary to empty.  */
+	  dict_start_offset = uncompressed_offset;
+	}
+
+      if (control < 0x80)
+	{
+	  size_t chunk_size;
+
+	  /* The only valid values here are 1 or 2.  A 1 means to
+	     reset the dictionary (done above).  Then we see an
+	     uncompressed chunk.  */
+
+	  if (unlikely (control > 2))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  /* An uncompressed chunk is a two byte size followed by
+	     data.  */
+
+	  if (unlikely (off + 2 > compressed_size))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  chunk_size = compressed[off] << 8;
+	  chunk_size += compressed[off + 1];
+	  ++chunk_size;
+
+	  off += 2;
+
+	  if (unlikely (off + chunk_size > compressed_size))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+	  if (unlikely (uncompressed_offset + chunk_size > uncompressed_size))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  memcpy (uncompressed + uncompressed_offset, compressed + off,
+		  chunk_size);
+	  uncompressed_offset += chunk_size;
+	  off += chunk_size;
+	}
+      else
+	{
+	  size_t uncompressed_chunk_start;
+	  size_t uncompressed_chunk_size;
+	  size_t compressed_chunk_size;
+	  size_t limit;
+
+	  /* An LZMA chunk.  This starts with an uncompressed size and
+	     a compressed size.  */
+
+	  if (unlikely (off + 4 >= compressed_size))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  uncompressed_chunk_start = uncompressed_offset;
+
+	  uncompressed_chunk_size = (control & 0x1f) << 16;
+	  uncompressed_chunk_size += compressed[off] << 8;
+	  uncompressed_chunk_size += compressed[off + 1];
+	  ++uncompressed_chunk_size;
+
+	  compressed_chunk_size = compressed[off + 2] << 8;
+	  compressed_chunk_size += compressed[off + 3];
+	  ++compressed_chunk_size;
+
+	  off += 4;
+
+	  /* Bit 7 (0x80) is set.
+	     Bits 6 and 5 (0x40 and 0x20) are as follows:
+	     0: don't reset anything
+	     1: reset state
+	     2: reset state, read properties
+	     3: reset state, read properties, reset dictionary (done above) */
+
+	  if (control >= 0xc0)
+	    {
+	      unsigned char props;
+
+	      /* Bit 6 is set, read properties.  */
+
+	      if (unlikely (off >= compressed_size))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      props = compressed[off];
+	      ++off;
+	      if (unlikely (props > (4 * 5 + 4) * 9 + 8))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	      pb = 0;
+	      while (props >= 9 * 5)
+		{
+		  props -= 9 * 5;
+		  ++pb;
+		}
+	      lp = 0;
+	      while (props > 9)
+		{
+		  props -= 9;
+		  ++lp;
+		}
+	      lc = props;
+	      if (unlikely (lc + lp > 4))
+		{
+		  elf_uncompress_failed ();
+		  return 0;
+		}
+	    }
+
+	  if (control >= 0xa0)
+	    {
+	      size_t i;
+
+	      /* Bit 5 or 6 is set, reset LZMA state.  */
+
+	      lstate = 0;
+	      memset (&dist, 0, sizeof dist);
+	      for (i = 0; i < LZMA_PROB_TOTAL_COUNT; i++)
+		probs[i] = 1 << 10;
+	      range = 0xffffffff;
+	      code = 0;
+	    }
+
+	  /* Read the range code.  */
+
+	  if (unlikely (off + 5 > compressed_size))
+	    {
+	      elf_uncompress_failed ();
+	      return 0;
+	    }
+
+	  /* The byte at compressed[off] is ignored for some
+	     reason.  */
+
+	  code = ((compressed[off + 1] << 24)
+		  + (compressed[off + 2] << 16)
+		  + (compressed[off + 3] << 8)
+		  + compressed[off + 4]);
+	  off += 5;
+
+	  /* This is the main LZMA decode loop.  */
+
+	  limit = off + compressed_chunk_size;
+	  *poffset = off;
+	  while (*poffset < limit)
+	    {
+	      unsigned int pos_state;
+
+	      if (unlikely (uncompressed_offset
+			    == (uncompressed_chunk_start
+				+ uncompressed_chunk_size)))
+		{
+		  /* We've decompressed all the expected bytes.  */
+		  break;
+		}
+
+	      pos_state = ((uncompressed_offset - dict_start_offset)
+			   & ((1 << pb) - 1));
+
+	      if (elf_lzma_bit (compressed, compressed_size,
+				probs + LZMA_IS_MATCH (lstate, pos_state),
+				poffset, &range, &code))
+		{
+		  uint32_t len;
+
+		  if (elf_lzma_bit (compressed, compressed_size,
+				    probs + LZMA_IS_REP (lstate),
+				    poffset, &range, &code))
+		    {
+		      int short_rep;
+		      uint32_t next_dist;
+
+		      /* Repeated match.  */
+
+		      short_rep = 0;
+		      if (elf_lzma_bit (compressed, compressed_size,
+					probs + LZMA_IS_REP0 (lstate),
+					poffset, &range, &code))
+			{
+			  if (elf_lzma_bit (compressed, compressed_size,
+					    probs + LZMA_IS_REP1 (lstate),
+					    poffset, &range, &code))
+			    {
+			      if (elf_lzma_bit (compressed, compressed_size,
+						probs + LZMA_IS_REP2 (lstate),
+						poffset, &range, &code))
+				{
+				  next_dist = dist[3];
+				  dist[3] = dist[2];
+				}
+			      else
+				{
+				  next_dist = dist[2];
+				}
+			      dist[2] = dist[1];
+			    }
+			  else
+			    {
+			      next_dist = dist[1];
+			    }
+
+			  dist[1] = dist[0];
+			  dist[0] = next_dist;
+			}
+		      else
+			{
+			  if (!elf_lzma_bit (compressed, compressed_size,
+					    (probs
+					     + LZMA_IS_REP0_LONG (lstate,
+								  pos_state)),
+					    poffset, &range, &code))
+			    short_rep = 1;
+			}
+
+		      if (lstate < 7)
+			lstate = short_rep ? 9 : 8;
+		      else
+			lstate = 11;
+
+		      if (short_rep)
+			len = 1;
+		      else
+			len = elf_lzma_len (compressed, compressed_size,
+					    probs, 1, pos_state, poffset,
+					    &range, &code);
+		    }
+		  else
+		    {
+		      uint32_t dist_state;
+		      uint32_t dist_slot;
+		      uint16_t *probs_dist;
+
+		      /* Match.  */
+
+		      if (lstate < 7)
+			lstate = 7;
+		      else
+			lstate = 10;
+		      dist[3] = dist[2];
+		      dist[2] = dist[1];
+		      dist[1] = dist[0];
+		      len = elf_lzma_len (compressed, compressed_size,
+					  probs, 0, pos_state, poffset,
+					  &range, &code);
+
+		      if (len < 4 + 2)
+			dist_state = len - 2;
+		      else
+			dist_state = 3;
+		      probs_dist = probs + LZMA_DIST_SLOT (dist_state, 0);
+		      dist_slot = elf_lzma_integer (compressed,
+						    compressed_size,
+						    probs_dist, 6,
+						    poffset, &range,
+						    &code);
+		      if (dist_slot < LZMA_DIST_MODEL_START)
+			dist[0] = dist_slot;
+		      else
+			{
+			  uint32_t limit;
+
+			  limit = (dist_slot >> 1) - 1;
+			  dist[0] = 2 + (dist_slot & 1);
+			  if (dist_slot < LZMA_DIST_MODEL_END)
+			    {
+			      dist[0] <<= limit;
+			      probs_dist = (probs
+					    + LZMA_DIST_SPECIAL(dist[0]
+								- dist_slot
+								- 1));
+			      dist[0] +=
+				elf_lzma_reverse_integer (compressed,
+							  compressed_size,
+							  probs_dist,
+							  limit, poffset,
+							  &range, &code);
+			    }
+			  else
+			    {
+			      uint32_t dist0;
+			      uint32_t i;
+
+			      dist0 = dist[0];
+			      for (i = 0; i < limit - 4; i++)
+				{
+				  uint32_t mask;
+
+				  elf_lzma_range_normalize (compressed,
+							    compressed_size,
+							    poffset,
+							    &range, &code);
+				  range >>= 1;
+				  code -= range;
+				  mask = -(code >> 31);
+				  code += range & mask;
+				  dist0 <<= 1;
+				  dist0 += mask + 1;
+				}
+			      dist0 <<= 4;
+			      probs_dist = probs + LZMA_DIST_ALIGN (0);
+			      dist0 +=
+				elf_lzma_reverse_integer (compressed,
+							  compressed_size,
+							  probs_dist, 4,
+							  poffset,
+							  &range, &code);
+			      dist[0] = dist0;
+			    }
+			}
+		    }
+
+		  if (unlikely (uncompressed_offset
+				- dict_start_offset < dist[0] + 1))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+		  if (unlikely (uncompressed_offset + len > uncompressed_size))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+
+		  if (dist[0] == 0)
+		    {
+		      /* A common case, meaning repeat the last
+			 character LEN times.  */
+		      memset (uncompressed + uncompressed_offset,
+			      uncompressed[uncompressed_offset - 1],
+			      len);
+		      uncompressed_offset += len;
+		    }
+		  else if (dist[0] + 1 >= len)
+		    {
+		      memcpy (uncompressed + uncompressed_offset,
+			      uncompressed + uncompressed_offset - dist[0] - 1,
+			      len);
+		      uncompressed_offset += len;
+		    }
+		  else
+		    {
+		      while (len > 0)
+			{
+			  uint32_t copy;
+
+			  copy = len < dist[0] + 1 ? len : dist[0] + 1;
+			  memcpy (uncompressed + uncompressed_offset,
+				  (uncompressed + uncompressed_offset
+				   - dist[0] - 1),
+				  copy);
+			  len -= copy;
+			  uncompressed_offset += copy;
+			}
+		    }
+		}
+	      else
+		{
+		  unsigned char prev;
+		  unsigned char low;
+		  size_t high;
+		  uint16_t *lit_probs;
+		  unsigned int sym;
+
+		  /* Literal value.  */
+
+		  if (uncompressed_offset > 0)
+		    prev = uncompressed[uncompressed_offset - 1];
+		  else
+		    prev = 0;
+		  low = prev >> (8 - lc);
+		  high = (((uncompressed_offset - dict_start_offset)
+			   & ((1 << lp) - 1))
+			  << lc);
+		  lit_probs = probs + LZMA_LITERAL (low + high, 0);
+		  if (lstate < 7)
+		    sym = elf_lzma_integer (compressed, compressed_size,
+					    lit_probs, 8, poffset, &range,
+					    &code);
+		  else
+		    {
+		      unsigned int match;
+		      unsigned int bit;
+		      unsigned int match_bit;
+		      unsigned int idx;
+
+		      sym = 1;
+		      if (uncompressed_offset >= dist[0] + 1)
+			match = uncompressed[uncompressed_offset - dist[0] - 1];
+		      else
+			match = 0;
+		      match <<= 1;
+		      bit = 0x100;
+		      do
+			{
+			  match_bit = match & bit;
+			  match <<= 1;
+			  idx = bit + match_bit + sym;
+			  sym <<= 1;
+			  if (elf_lzma_bit (compressed, compressed_size,
+					    lit_probs + idx, poffset,
+					    &range, &code))
+			    {
+			      ++sym;
+			      bit &= match_bit;
+			    }
+			  else
+			    {
+			      bit &= ~ match_bit;
+			    }
+			}
+		      while (sym < 0x100);
+		    }
+
+		  if (unlikely (uncompressed_offset >= uncompressed_size))
+		    {
+		      elf_uncompress_failed ();
+		      return 0;
+		    }
+
+		  uncompressed[uncompressed_offset] = (unsigned char) sym;
+		  ++uncompressed_offset;
+		  if (lstate <= 3)
+		    lstate = 0;
+		  else if (lstate <= 9)
+		    lstate -= 3;
+		  else
+		    lstate -= 6;
+		}
+	    }
+
+	  elf_lzma_range_normalize (compressed, compressed_size, poffset,
+				    &range, &code);
+
+	  off = *poffset;
+	}
+    }
+
+  /* We have reached the end of the block.  Pad to four byte
+     boundary.  */
+  off = (off + 3) &~ (size_t) 3;
+  if (unlikely (off > compressed_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  switch (check)
+    {
+    case 0:
+      /* No check.  */
+      break;
+
+    case 1:
+      /* CRC32 */
+      if (unlikely (off + 4 > compressed_size))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      computed_crc = elf_crc32 (0, uncompressed, uncompressed_offset);
+      stream_crc = (compressed[off]
+		    | (compressed[off + 1] << 8)
+		    | (compressed[off + 2] << 16)
+		    | (compressed[off + 3] << 24));
+      if (computed_crc != stream_crc)
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      off += 4;
+      break;
+
+    case 4:
+      /* CRC64.  We don't bother computing a CRC64 checksum.  */
+      if (unlikely (off + 8 > compressed_size))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      off += 8;
+      break;
+
+    case 10:
+      /* SHA.  We don't bother computing a SHA checksum.  */
+      if (unlikely (off + 32 > compressed_size))
+	{
+	  elf_uncompress_failed ();
+	  return 0;
+	}
+      off += 32;
+      break;
+
+    default:
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  *poffset = off;
+
+  return 1;
+}
+
+/* Uncompress LZMA data found in a minidebug file.  The minidebug
+   format is described at
+   https://sourceware.org/gdb/current/onlinedocs/gdb/MiniDebugInfo.html.
+   Returns 0 on error, 1 on successful decompression.  For this
+   function we return 0 on failure to decompress, as the calling code
+   will carry on in that case.  */
+
+static int
+elf_uncompress_lzma (struct backtrace_state *state,
+		     const unsigned char *compressed, size_t compressed_size,
+		     backtrace_error_callback error_callback, void *data,
+		     unsigned char **uncompressed, size_t *uncompressed_size)
+{
+  size_t header_size;
+  size_t footer_size;
+  unsigned char check;
+  uint32_t computed_crc;
+  uint32_t stream_crc;
+  size_t offset;
+  size_t index_size;
+  size_t footer_offset;
+  size_t index_offset;
+  uint64_t index_compressed_size;
+  uint64_t index_uncompressed_size;
+  unsigned char *mem;
+  uint16_t *probs;
+  size_t compressed_block_size;
+
+  /* The format starts with a stream header and ends with a stream
+     footer.  */
+  header_size = 12;
+  footer_size = 12;
+  if (unlikely (compressed_size < header_size + footer_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* The stream header starts with a magic string.  */
+  if (unlikely (memcmp (compressed, "\375" "7zXZ\0", 6) != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Next come stream flags.  The first byte is zero, the second byte
+     is the check.  */
+  if (unlikely (compressed[6] != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  check = compressed[7];
+  if (unlikely ((check & 0xf8) != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Next comes a CRC of the stream flags.  */
+  computed_crc = elf_crc32 (0, compressed + 6, 2);
+  stream_crc = (compressed[8]
+		| (compressed[9] << 8)
+		| (compressed[10] << 16)
+		| (compressed[11] << 24));
+  if (unlikely (computed_crc != stream_crc))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Now that we've parsed the header, parse the footer, so that we
+     can get the uncompressed size.  */
+
+  /* The footer ends with two magic bytes.  */
+
+  offset = compressed_size;
+  if (unlikely (memcmp (compressed + offset - 2, "YZ", 2) != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  offset -= 2;
+
+  /* Before that are the stream flags, which should be the same as the
+     flags in the header.  */
+  if (unlikely (compressed[offset - 2] != 0
+		|| compressed[offset - 1] != check))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  offset -= 2;
+
+  /* Before that is the size of the index field, which precedes the
+     footer.  */
+  index_size = (compressed[offset - 4]
+		| (compressed[offset - 3] << 8)
+		| (compressed[offset - 2] << 16)
+		| (compressed[offset - 1] << 24));
+  index_size = (index_size + 1) * 4;
+  offset -= 4;
+
+  /* Before that is a footer CRC.  */
+  computed_crc = elf_crc32 (0, compressed + offset, 6);
+  stream_crc = (compressed[offset - 4]
+		| (compressed[offset - 3] << 8)
+		| (compressed[offset - 2] << 16)
+		| (compressed[offset - 1] << 24));
+  if (unlikely (computed_crc != stream_crc))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  offset -= 4;
+
+  /* The index comes just before the footer.  */
+  if (unlikely (offset < index_size + header_size))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  footer_offset = offset;
+  offset -= index_size;
+  index_offset = offset;
+
+  /* The index starts with a zero byte.  */
+  if (unlikely (compressed[offset] != 0))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  ++offset;
+
+  /* Next is the number of blocks.  We expect zero blocks for an empty
+     stream, and otherwise a single block.  */
+  if (unlikely (compressed[offset] == 0))
+    {
+      *uncompressed = NULL;
+      *uncompressed_size = 0;
+      return 1;
+    }
+  if (unlikely (compressed[offset] != 1))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  ++offset;
+
+  /* Next is the compressed size and the uncompressed size.  */
+  if (!elf_lzma_varint (compressed, compressed_size, &offset,
+			&index_compressed_size))
+    return 0;
+  if (!elf_lzma_varint (compressed, compressed_size, &offset,
+			&index_uncompressed_size))
+    return 0;
+
+  /* Pad to a four byte boundary.  */
+  offset = (offset + 3) &~ (size_t) 3;
+
+  /* Next is a CRC of the index.  */
+  computed_crc = elf_crc32 (0, compressed + index_offset,
+			    offset - index_offset);
+  stream_crc = (compressed[offset]
+		| (compressed[offset + 1] << 8)
+		| (compressed[offset + 2] << 16)
+		| (compressed[offset + 3] << 24));
+  if (unlikely (computed_crc != stream_crc))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+  offset += 4;
+
+  /* We should now be back at the footer.  */
+  if (unlikely (offset != footer_offset))
+    {
+      elf_uncompress_failed ();
+      return 0;
+    }
+
+  /* Allocate space to hold the uncompressed data.  If we succeed in
+     uncompressing the LZMA data, we never free this memory.  */
+  mem = (unsigned char *) backtrace_alloc (state, index_uncompressed_size,
+					   error_callback, data);
+  if (unlikely (mem == NULL))
+    return 0;
+  *uncompressed = mem;
+  *uncompressed_size = index_uncompressed_size;
+
+  /* Allocate space for probabilities.  */
+  probs = ((uint16_t *)
+	   backtrace_alloc (state,
+			    LZMA_PROB_TOTAL_COUNT * sizeof (uint16_t),
+			    error_callback, data));
+  if (unlikely (probs == NULL))
+    {
+      backtrace_free (state, mem, index_uncompressed_size, error_callback,
+		      data);
+      return 0;
+    }
+
+  /* Uncompress the block, which follows the header.  */
+  offset = 12;
+  if (!elf_uncompress_lzma_block (compressed, compressed_size, check, probs,
+				  mem, index_uncompressed_size, &offset))
+    {
+      backtrace_free (state, mem, index_uncompressed_size, error_callback,
+		      data);
+      return 0;
+    }
+
+  compressed_block_size = offset - 12;
+  if (unlikely (compressed_block_size
+		!= ((index_compressed_size + 3) &~ (size_t) 3)))
+    {
+      elf_uncompress_failed ();
+      backtrace_free (state, mem, index_uncompressed_size, error_callback,
+		      data);
+      return 0;
+    }
+
+  offset = (offset + 3) &~ (size_t) 3;
+  if (unlikely (offset != index_offset))
+    {
+      elf_uncompress_failed ();
+      backtrace_free (state, mem, index_uncompressed_size, error_callback,
+		      data);
+      return 0;
+    }
+
+  return 1;
+}
+
+/* This function is a hook for testing the LZMA support.  It is only
+   used by tests.  */
+
+int
+backtrace_uncompress_lzma (struct backtrace_state *state,
+			   const unsigned char *compressed,
+			   size_t compressed_size,
+			   backtrace_error_callback error_callback,
+			   void *data, unsigned char **uncompressed,
+			   size_t *uncompressed_size)
+{
+  return elf_uncompress_lzma (state, compressed, compressed_size,
+			      error_callback, data, uncompressed,
+			      uncompressed_size);
+}
+
+/* Add the backtrace data for one ELF file.  Returns 1 on success,
+   0 on failure (in both cases descriptor is closed) or -1 if exe
+   is non-zero and the ELF file is ET_DYN, which tells the caller that
+   elf_add will need to be called on the descriptor again after
+   base_address is determined.  */
+
+static int
+elf_add (struct backtrace_state *state, const char *filename, int descriptor,
+	 const unsigned char *memory, size_t memory_size,
+	 uintptr_t base_address, backtrace_error_callback error_callback,
+	 void *data, fileline *fileline_fn, int *found_sym, int *found_dwarf,
+	 struct dwarf_data **fileline_entry, int exe, int debuginfo,
+	 const char *with_buildid_data, uint32_t with_buildid_size)
+{
+  struct elf_view ehdr_view;
+  b_elf_ehdr ehdr;
+  off_t shoff;
+  unsigned int shnum;
+  unsigned int shstrndx;
+  struct elf_view shdrs_view;
+  int shdrs_view_valid;
+  const b_elf_shdr *shdrs;
+  const b_elf_shdr *shstrhdr;
+  size_t shstr_size;
+  off_t shstr_off;
+  struct elf_view names_view;
+  int names_view_valid;
+  const char *names;
+  unsigned int symtab_shndx;
+  unsigned int dynsym_shndx;
+  unsigned int i;
+  struct debug_section_info sections[DEBUG_MAX];
+  struct debug_section_info zsections[DEBUG_MAX];
+  struct elf_view symtab_view;
+  int symtab_view_valid;
+  struct elf_view strtab_view;
+  int strtab_view_valid;
+  struct elf_view buildid_view;
+  int buildid_view_valid;
+  const char *buildid_data;
+  uint32_t buildid_size;
+  struct elf_view debuglink_view;
+  int debuglink_view_valid;
+  const char *debuglink_name;
+  uint32_t debuglink_crc;
+  struct elf_view debugaltlink_view;
+  int debugaltlink_view_valid;
+  const char *debugaltlink_name;
+  const char *debugaltlink_buildid_data;
+  uint32_t debugaltlink_buildid_size;
+  struct elf_view gnu_debugdata_view;
+  int gnu_debugdata_view_valid;
+  size_t gnu_debugdata_size;
+  unsigned char *gnu_debugdata_uncompressed;
+  size_t gnu_debugdata_uncompressed_size;
+  off_t min_offset;
+  off_t max_offset;
+  off_t debug_size;
+  struct elf_view debug_view;
+  int debug_view_valid;
+  unsigned int using_debug_view;
+  uint16_t *zdebug_table;
+  struct elf_view split_debug_view[DEBUG_MAX];
+  unsigned char split_debug_view_valid[DEBUG_MAX];
+  struct elf_ppc64_opd_data opd_data, *opd;
+  struct dwarf_sections dwarf_sections;
+
+  if (!debuginfo)
+    {
+      *found_sym = 0;
+      *found_dwarf = 0;
+    }
+
+  shdrs_view_valid = 0;
+  names_view_valid = 0;
+  symtab_view_valid = 0;
+  strtab_view_valid = 0;
+  buildid_view_valid = 0;
+  buildid_data = NULL;
+  buildid_size = 0;
+  debuglink_view_valid = 0;
+  debuglink_name = NULL;
+  debuglink_crc = 0;
+  debugaltlink_view_valid = 0;
+  debugaltlink_name = NULL;
+  debugaltlink_buildid_data = NULL;
+  debugaltlink_buildid_size = 0;
+  gnu_debugdata_view_valid = 0;
+  gnu_debugdata_size = 0;
+  debug_view_valid = 0;
+  memset (&split_debug_view_valid[0], 0, sizeof split_debug_view_valid);
+  opd = NULL;
+
+  if (!elf_get_view (state, descriptor, memory, memory_size, 0, sizeof ehdr,
+		     error_callback, data, &ehdr_view))
+    goto fail;
+
+  memcpy (&ehdr, ehdr_view.view.data, sizeof ehdr);
+
+  elf_release_view (state, &ehdr_view, error_callback, data);
+
+  if (ehdr.e_ident[EI_MAG0] != ELFMAG0
+      || ehdr.e_ident[EI_MAG1] != ELFMAG1
+      || ehdr.e_ident[EI_MAG2] != ELFMAG2
+      || ehdr.e_ident[EI_MAG3] != ELFMAG3)
+    {
+      error_callback (data, "executable file is not ELF", 0);
+      goto fail;
+    }
+  if (ehdr.e_ident[EI_VERSION] != EV_CURRENT)
+    {
+      error_callback (data, "executable file is unrecognized ELF version", 0);
+      goto fail;
+    }
+
+#if BACKTRACE_ELF_SIZE == 32
+#define BACKTRACE_ELFCLASS ELFCLASS32
+#else
+#define BACKTRACE_ELFCLASS ELFCLASS64
+#endif
+
+  if (ehdr.e_ident[EI_CLASS] != BACKTRACE_ELFCLASS)
+    {
+      error_callback (data, "executable file is unexpected ELF class", 0);
+      goto fail;
+    }
+
+  if (ehdr.e_ident[EI_DATA] != ELFDATA2LSB
+      && ehdr.e_ident[EI_DATA] != ELFDATA2MSB)
+    {
+      error_callback (data, "executable file has unknown endianness", 0);
+      goto fail;
+    }
+
+  /* If the executable is ET_DYN, it is either a PIE, or we are running
+     directly a shared library with .interp.  We need to wait for
+     dl_iterate_phdr in that case to determine the actual base_address.  */
+  if (exe && ehdr.e_type == ET_DYN)
+    return -1;
+
+  shoff = ehdr.e_shoff;
+  shnum = ehdr.e_shnum;
+  shstrndx = ehdr.e_shstrndx;
+
+  if ((shnum == 0 || shstrndx == SHN_XINDEX)
+      && shoff != 0)
+    {
+      struct elf_view shdr_view;
+      const b_elf_shdr *shdr;
+
+      if (!elf_get_view (state, descriptor, memory, memory_size, shoff,
+			 sizeof shdr, error_callback, data, &shdr_view))
+	goto fail;
+
+      shdr = (const b_elf_shdr *) shdr_view.view.data;
+
+      if (shnum == 0)
+	shnum = shdr->sh_size;
+
+      if (shstrndx == SHN_XINDEX)
+	{
+	  shstrndx = shdr->sh_link;
+
+	  /* Versions of the GNU binutils between 2.12 and 2.18 did
+	     not handle objects with more than SHN_LORESERVE sections
+	     correctly.  All large section indexes were offset by
+	     0x100.  There is more information at
+	     http://sourceware.org/bugzilla/show_bug.cgi?id-5900 .
+	     Fortunately these object files are easy to detect, as the
+	     GNU binutils always put the section header string table
+	     near the end of the list of sections.  Thus if the
+	     section header string table index is larger than the
+	     number of sections, then we know we have to subtract
+	     0x100 to get the real section index.  */
+	  if (shstrndx >= shnum && shstrndx >= SHN_LORESERVE + 0x100)
+	    shstrndx -= 0x100;
+	}
+
+      elf_release_view (state, &shdr_view, error_callback, data);
+    }
+
+  if (shnum == 0 || shstrndx == 0)
+    goto fail;
+
+  /* To translate PC to file/line when using DWARF, we need to find
+     the .debug_info and .debug_line sections.  */
+
+  /* Read the section headers, skipping the first one.  */
+
+  if (!elf_get_view (state, descriptor, memory, memory_size,
+		     shoff + sizeof (b_elf_shdr),
+		     (shnum - 1) * sizeof (b_elf_shdr),
+		     error_callback, data, &shdrs_view))
+    goto fail;
+  shdrs_view_valid = 1;
+  shdrs = (const b_elf_shdr *) shdrs_view.view.data;
+
+  /* Read the section names.  */
+
+  shstrhdr = &shdrs[shstrndx - 1];
+  shstr_size = shstrhdr->sh_size;
+  shstr_off = shstrhdr->sh_offset;
+
+  if (!elf_get_view (state, descriptor, memory, memory_size, shstr_off,
+		     shstrhdr->sh_size, error_callback, data, &names_view))
+    goto fail;
+  names_view_valid = 1;
+  names = (const char *) names_view.view.data;
+
+  symtab_shndx = 0;
+  dynsym_shndx = 0;
+
+  memset (sections, 0, sizeof sections);
+  memset (zsections, 0, sizeof zsections);
+
+  /* Look for the symbol table.  */
+  for (i = 1; i < shnum; ++i)
+    {
+      const b_elf_shdr *shdr;
+      unsigned int sh_name;
+      const char *name;
+      int j;
+
+      shdr = &shdrs[i - 1];
+
+      if (shdr->sh_type == SHT_SYMTAB)
+	symtab_shndx = i;
+      else if (shdr->sh_type == SHT_DYNSYM)
+	dynsym_shndx = i;
+
+      sh_name = shdr->sh_name;
+      if (sh_name >= shstr_size)
+	{
+	  error_callback (data, "ELF section name out of range", 0);
+	  goto fail;
+	}
+
+      name = names + sh_name;
+
+      for (j = 0; j < (int) DEBUG_MAX; ++j)
+	{
+	  if (strcmp (name, dwarf_section_names[j]) == 0)
+	    {
+	      sections[j].offset = shdr->sh_offset;
+	      sections[j].size = shdr->sh_size;
+	      sections[j].compressed = (shdr->sh_flags & SHF_COMPRESSED) != 0;
+	      break;
+	    }
+	}
+
+      if (name[0] == '.' && name[1] == 'z')
+	{
+	  for (j = 0; j < (int) DEBUG_MAX; ++j)
+	    {
+	      if (strcmp (name + 2, dwarf_section_names[j] + 1) == 0)
+		{
+		  zsections[j].offset = shdr->sh_offset;
+		  zsections[j].size = shdr->sh_size;
+		  break;
+		}
+	    }
+	}
+
+      /* Read the build ID if present.  This could check for any
+	 SHT_NOTE section with the right note name and type, but gdb
+	 looks for a specific section name.  */
+      if ((!debuginfo || with_buildid_data != NULL)
+	  && !buildid_view_valid
+	  && strcmp (name, ".note.gnu.build-id") == 0)
+	{
+	  const b_elf_note *note;
+
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     shdr->sh_offset, shdr->sh_size, error_callback,
+			     data, &buildid_view))
+	    goto fail;
+
+	  buildid_view_valid = 1;
+	  note = (const b_elf_note *) buildid_view.view.data;
+	  if (note->type == NT_GNU_BUILD_ID
+	      && note->namesz == 4
+	      && strncmp (note->name, "GNU", 4) == 0
+	      && shdr->sh_size <= 12 + ((note->namesz + 3) & ~ 3) + note->descsz)
+	    {
+	      buildid_data = &note->name[0] + ((note->namesz + 3) & ~ 3);
+	      buildid_size = note->descsz;
+	    }
+
+	  if (with_buildid_size != 0)
+	    {
+	      if (buildid_size != with_buildid_size)
+		goto fail;
+
+	      if (memcmp (buildid_data, with_buildid_data, buildid_size) != 0)
+		goto fail;
+	    }
+	}
+
+      /* Read the debuglink file if present.  */
+      if (!debuginfo
+	  && !debuglink_view_valid
+	  && strcmp (name, ".gnu_debuglink") == 0)
+	{
+	  const char *debuglink_data;
+	  size_t crc_offset;
+
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     shdr->sh_offset, shdr->sh_size, error_callback,
+			     data, &debuglink_view))
+	    goto fail;
+
+	  debuglink_view_valid = 1;
+	  debuglink_data = (const char *) debuglink_view.view.data;
+	  crc_offset = strnlen (debuglink_data, shdr->sh_size);
+	  crc_offset = (crc_offset + 3) & ~3;
+	  if (crc_offset + 4 <= shdr->sh_size)
+	    {
+	      debuglink_name = debuglink_data;
+	      debuglink_crc = *(const uint32_t*)(debuglink_data + crc_offset);
+	    }
+	}
+
+      if (!debugaltlink_view_valid
+	  && strcmp (name, ".gnu_debugaltlink") == 0)
+	{
+	  const char *debugaltlink_data;
+	  size_t debugaltlink_name_len;
+
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     shdr->sh_offset, shdr->sh_size, error_callback,
+			     data, &debugaltlink_view))
+	    goto fail;
+
+	  debugaltlink_view_valid = 1;
+	  debugaltlink_data = (const char *) debugaltlink_view.view.data;
+	  debugaltlink_name = debugaltlink_data;
+	  debugaltlink_name_len = strnlen (debugaltlink_data, shdr->sh_size);
+	  if (debugaltlink_name_len < shdr->sh_size)
+	    {
+	      /* Include terminating zero.  */
+	      debugaltlink_name_len += 1;
+
+	      debugaltlink_buildid_data
+		= debugaltlink_data + debugaltlink_name_len;
+	      debugaltlink_buildid_size = shdr->sh_size - debugaltlink_name_len;
+	    }
+	}
+
+      if (!gnu_debugdata_view_valid
+	  && strcmp (name, ".gnu_debugdata") == 0)
+	{
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     shdr->sh_offset, shdr->sh_size, error_callback,
+			     data, &gnu_debugdata_view))
+	    goto fail;
+
+	  gnu_debugdata_size = shdr->sh_size;
+	  gnu_debugdata_view_valid = 1;
+	}
+
+      /* Read the .opd section on PowerPC64 ELFv1.  */
+      if (ehdr.e_machine == EM_PPC64
+	  && (ehdr.e_flags & EF_PPC64_ABI) < 2
+	  && shdr->sh_type == SHT_PROGBITS
+	  && strcmp (name, ".opd") == 0)
+	{
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     shdr->sh_offset, shdr->sh_size, error_callback,
+			     data, &opd_data.view))
+	    goto fail;
+
+	  opd = &opd_data;
+	  opd->addr = shdr->sh_addr;
+	  opd->data = (const char *) opd_data.view.view.data;
+	  opd->size = shdr->sh_size;
+	}
+    }
+
+  if (symtab_shndx == 0)
+    symtab_shndx = dynsym_shndx;
+  if (symtab_shndx != 0 && !debuginfo)
+    {
+      const b_elf_shdr *symtab_shdr;
+      unsigned int strtab_shndx;
+      const b_elf_shdr *strtab_shdr;
+      struct elf_syminfo_data *sdata;
+
+      symtab_shdr = &shdrs[symtab_shndx - 1];
+      strtab_shndx = symtab_shdr->sh_link;
+      if (strtab_shndx >= shnum)
+	{
+	  error_callback (data,
+			  "ELF symbol table strtab link out of range", 0);
+	  goto fail;
+	}
+      strtab_shdr = &shdrs[strtab_shndx - 1];
+
+      if (!elf_get_view (state, descriptor, memory, memory_size,
+			 symtab_shdr->sh_offset, symtab_shdr->sh_size,
+			 error_callback, data, &symtab_view))
+	goto fail;
+      symtab_view_valid = 1;
+
+      if (!elf_get_view (state, descriptor, memory, memory_size,
+			 strtab_shdr->sh_offset, strtab_shdr->sh_size,
+			 error_callback, data, &strtab_view))
+	goto fail;
+      strtab_view_valid = 1;
+
+      sdata = ((struct elf_syminfo_data *)
+	       backtrace_alloc (state, sizeof *sdata, error_callback, data));
+      if (sdata == NULL)
+	goto fail;
+
+      if (!elf_initialize_syminfo (state, base_address,
+				   symtab_view.view.data, symtab_shdr->sh_size,
+				   strtab_view.view.data, strtab_shdr->sh_size,
+				   error_callback, data, sdata, opd))
+	{
+	  backtrace_free (state, sdata, sizeof *sdata, error_callback, data);
+	  goto fail;
+	}
+
+      /* We no longer need the symbol table, but we hold on to the
+	 string table permanently.  */
+      elf_release_view (state, &symtab_view, error_callback, data);
+      symtab_view_valid = 0;
+      strtab_view_valid = 0;
+
+      *found_sym = 1;
+
+      elf_add_syminfo_data (state, sdata);
+    }
+
+  elf_release_view (state, &shdrs_view, error_callback, data);
+  shdrs_view_valid = 0;
+  elf_release_view (state, &names_view, error_callback, data);
+  names_view_valid = 0;
+
+  /* If the debug info is in a separate file, read that one instead.  */
+
+  if (buildid_data != NULL)
+    {
+      int d;
+
+      d = elf_open_debugfile_by_buildid (state, buildid_data, buildid_size,
+					 error_callback, data);
+      if (d >= 0)
+	{
+	  int ret;
+
+	  elf_release_view (state, &buildid_view, error_callback, data);
+	  if (debuglink_view_valid)
+	    elf_release_view (state, &debuglink_view, error_callback, data);
+	  if (debugaltlink_view_valid)
+	    elf_release_view (state, &debugaltlink_view, error_callback, data);
+	  ret = elf_add (state, "", d, NULL, 0, base_address, error_callback,
+			 data, fileline_fn, found_sym, found_dwarf, NULL, 0,
+			 1, NULL, 0);
+	  if (ret < 0)
+	    backtrace_close (d, error_callback, data);
+	  else if (descriptor >= 0)
+	    backtrace_close (descriptor, error_callback, data);
+	  return ret;
+	}
+    }
+
+  if (buildid_view_valid)
+    {
+      elf_release_view (state, &buildid_view, error_callback, data);
+      buildid_view_valid = 0;
+    }
+
+  if (opd)
+    {
+      elf_release_view (state, &opd->view, error_callback, data);
+      opd = NULL;
+    }
+
+  if (debuglink_name != NULL)
+    {
+      int d;
+
+      d = elf_open_debugfile_by_debuglink (state, filename, debuglink_name,
+					   debuglink_crc, error_callback,
+					   data);
+      if (d >= 0)
+	{
+	  int ret;
+
+	  elf_release_view (state, &debuglink_view, error_callback, data);
+	  if (debugaltlink_view_valid)
+	    elf_release_view (state, &debugaltlink_view, error_callback, data);
+	  ret = elf_add (state, "", d, NULL, 0, base_address, error_callback,
+			 data, fileline_fn, found_sym, found_dwarf, NULL, 0,
+			 1, NULL, 0);
+	  if (ret < 0)
+	    backtrace_close (d, error_callback, data);
+	  else if (descriptor >= 0)
+	    backtrace_close(descriptor, error_callback, data);
+	  return ret;
+	}
+    }
+
+  if (debuglink_view_valid)
+    {
+      elf_release_view (state, &debuglink_view, error_callback, data);
+      debuglink_view_valid = 0;
+    }
+
+  struct dwarf_data *fileline_altlink = NULL;
+  if (debugaltlink_name != NULL)
+    {
+      int d;
+
+      d = elf_open_debugfile_by_debuglink (state, filename, debugaltlink_name,
+					   0, error_callback, data);
+      if (d >= 0)
+	{
+	  int ret;
+
+	  ret = elf_add (state, filename, d, NULL, 0, base_address,
+			 error_callback, data, fileline_fn, found_sym,
+			 found_dwarf, &fileline_altlink, 0, 1,
+			 debugaltlink_buildid_data, debugaltlink_buildid_size);
+	  elf_release_view (state, &debugaltlink_view, error_callback, data);
+	  debugaltlink_view_valid = 0;
+	  if (ret < 0)
+	    {
+	      backtrace_close (d, error_callback, data);
+	      return ret;
+	    }
+	}
+    }
+
+  if (debugaltlink_view_valid)
+    {
+      elf_release_view (state, &debugaltlink_view, error_callback, data);
+      debugaltlink_view_valid = 0;
+    }
+
+  if (gnu_debugdata_view_valid)
+    {
+      int ret;
+
+      ret = elf_uncompress_lzma (state,
+				 ((const unsigned char *)
+				  gnu_debugdata_view.view.data),
+				 gnu_debugdata_size, error_callback, data,
+				 &gnu_debugdata_uncompressed,
+				 &gnu_debugdata_uncompressed_size);
+
+      elf_release_view (state, &gnu_debugdata_view, error_callback, data);
+      gnu_debugdata_view_valid = 0;
+
+      if (ret)
+	{
+	  ret = elf_add (state, filename, -1, gnu_debugdata_uncompressed,
+			 gnu_debugdata_uncompressed_size, base_address,
+			 error_callback, data, fileline_fn, found_sym,
+			 found_dwarf, NULL, 0, 0, NULL, 0);
+	  if (ret >= 0 && descriptor >= 0)
+	    backtrace_close(descriptor, error_callback, data);
+	  return ret;
+	}
+    }
+
+  /* Read all the debug sections in a single view, since they are
+     probably adjacent in the file.  If any of sections are
+     uncompressed, we never release this view.  */
+
+  min_offset = 0;
+  max_offset = 0;
+  debug_size = 0;
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      off_t end;
+
+      if (sections[i].size != 0)
+	{
+	  if (min_offset == 0 || sections[i].offset < min_offset)
+	    min_offset = sections[i].offset;
+	  end = sections[i].offset + sections[i].size;
+	  if (end > max_offset)
+	    max_offset = end;
+	  debug_size += sections[i].size;
+	}
+      if (zsections[i].size != 0)
+	{
+	  if (min_offset == 0 || zsections[i].offset < min_offset)
+	    min_offset = zsections[i].offset;
+	  end = zsections[i].offset + zsections[i].size;
+	  if (end > max_offset)
+	    max_offset = end;
+	  debug_size += zsections[i].size;
+	}
+    }
+  if (min_offset == 0 || max_offset == 0)
+    {
+      if (descriptor >= 0)
+	{
+	  if (!backtrace_close (descriptor, error_callback, data))
+	    goto fail;
+	}
+      return 1;
+    }
+
+  /* If the total debug section size is large, assume that there are
+     gaps between the sections, and read them individually.  */
+
+  if (max_offset - min_offset < 0x20000000
+      || max_offset - min_offset < debug_size + 0x10000)
+    {
+      if (!elf_get_view (state, descriptor, memory, memory_size, min_offset,
+			 max_offset - min_offset, error_callback, data,
+			 &debug_view))
+	goto fail;
+      debug_view_valid = 1;
+    }
+  else
+    {
+      memset (&split_debug_view[0], 0, sizeof split_debug_view);
+      for (i = 0; i < (int) DEBUG_MAX; ++i)
+	{
+	  struct debug_section_info *dsec;
+
+	  if (sections[i].size != 0)
+	    dsec = &sections[i];
+	  else if (zsections[i].size != 0)
+	    dsec = &zsections[i];
+	  else
+	    continue;
+
+	  if (!elf_get_view (state, descriptor, memory, memory_size,
+			     dsec->offset, dsec->size, error_callback, data,
+			     &split_debug_view[i]))
+	    goto fail;
+	  split_debug_view_valid[i] = 1;
+
+	  if (sections[i].size != 0)
+	    sections[i].data = ((const unsigned char *)
+				split_debug_view[i].view.data);
+	  else
+	    zsections[i].data = ((const unsigned char *)
+				 split_debug_view[i].view.data);
+	}
+    }
+
+  /* We've read all we need from the executable.  */
+  if (descriptor >= 0)
+    {
+      if (!backtrace_close (descriptor, error_callback, data))
+	goto fail;
+      descriptor = -1;
+    }
+
+  using_debug_view = 0;
+  if (debug_view_valid)
+    {
+      for (i = 0; i < (int) DEBUG_MAX; ++i)
+	{
+	  if (sections[i].size == 0)
+	    sections[i].data = NULL;
+	  else
+	    {
+	      sections[i].data = ((const unsigned char *) debug_view.view.data
+				  + (sections[i].offset - min_offset));
+	      ++using_debug_view;
+	    }
+
+	  if (zsections[i].size == 0)
+	    zsections[i].data = NULL;
+	  else
+	    zsections[i].data = ((const unsigned char *) debug_view.view.data
+				 + (zsections[i].offset - min_offset));
+	}
+    }
+
+  /* Uncompress the old format (--compress-debug-sections=zlib-gnu).  */
+
+  zdebug_table = NULL;
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      if (sections[i].size == 0 && zsections[i].size > 0)
+	{
+	  unsigned char *uncompressed_data;
+	  size_t uncompressed_size;
+
+	  if (zdebug_table == NULL)
+	    {
+	      zdebug_table = ((uint16_t *)
+			      backtrace_alloc (state, ZDEBUG_TABLE_SIZE,
+					       error_callback, data));
+	      if (zdebug_table == NULL)
+		goto fail;
+	    }
+
+	  uncompressed_data = NULL;
+	  uncompressed_size = 0;
+	  if (!elf_uncompress_zdebug (state, zsections[i].data,
+				      zsections[i].size, zdebug_table,
+				      error_callback, data,
+				      &uncompressed_data, &uncompressed_size))
+	    goto fail;
+	  sections[i].data = uncompressed_data;
+	  sections[i].size = uncompressed_size;
+	  sections[i].compressed = 0;
+
+	  if (split_debug_view_valid[i])
+	    {
+	      elf_release_view (state, &split_debug_view[i],
+				error_callback, data);
+	      split_debug_view_valid[i] = 0;
+	    }
+	}
+    }
+
+  /* Uncompress the official ELF format
+     (--compress-debug-sections=zlib-gabi).  */
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      unsigned char *uncompressed_data;
+      size_t uncompressed_size;
+
+      if (sections[i].size == 0 || !sections[i].compressed)
+	continue;
+
+      if (zdebug_table == NULL)
+	{
+	  zdebug_table = ((uint16_t *)
+			  backtrace_alloc (state, ZDEBUG_TABLE_SIZE,
+					   error_callback, data));
+	  if (zdebug_table == NULL)
+	    goto fail;
+	}
+
+      uncompressed_data = NULL;
+      uncompressed_size = 0;
+      if (!elf_uncompress_chdr (state, sections[i].data, sections[i].size,
+				zdebug_table, error_callback, data,
+				&uncompressed_data, &uncompressed_size))
+	goto fail;
+      sections[i].data = uncompressed_data;
+      sections[i].size = uncompressed_size;
+      sections[i].compressed = 0;
+
+      if (debug_view_valid)
+	--using_debug_view;
+      else if (split_debug_view_valid[i])
+	{
+	  elf_release_view (state, &split_debug_view[i], error_callback, data);
+	  split_debug_view_valid[i] = 0;
+	}
+    }
+
+  if (zdebug_table != NULL)
+    backtrace_free (state, zdebug_table, ZDEBUG_TABLE_SIZE,
+		    error_callback, data);
+
+  if (debug_view_valid && using_debug_view == 0)
+    {
+      elf_release_view (state, &debug_view, error_callback, data);
+      debug_view_valid = 0;
+    }
+
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      dwarf_sections.data[i] = sections[i].data;
+      dwarf_sections.size[i] = sections[i].size;
+    }
+
+  if (!backtrace_dwarf_add (state, base_address, &dwarf_sections,
+			    ehdr.e_ident[EI_DATA] == ELFDATA2MSB,
+			    fileline_altlink,
+			    error_callback, data, fileline_fn,
+			    fileline_entry))
+    goto fail;
+
+  *found_dwarf = 1;
+
+  return 1;
+
+ fail:
+  if (shdrs_view_valid)
+    elf_release_view (state, &shdrs_view, error_callback, data);
+  if (names_view_valid)
+    elf_release_view (state, &names_view, error_callback, data);
+  if (symtab_view_valid)
+    elf_release_view (state, &symtab_view, error_callback, data);
+  if (strtab_view_valid)
+    elf_release_view (state, &strtab_view, error_callback, data);
+  if (debuglink_view_valid)
+    elf_release_view (state, &debuglink_view, error_callback, data);
+  if (debugaltlink_view_valid)
+    elf_release_view (state, &debugaltlink_view, error_callback, data);
+  if (gnu_debugdata_view_valid)
+    elf_release_view (state, &gnu_debugdata_view, error_callback, data);
+  if (buildid_view_valid)
+    elf_release_view (state, &buildid_view, error_callback, data);
+  if (debug_view_valid)
+    elf_release_view (state, &debug_view, error_callback, data);
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      if (split_debug_view_valid[i])
+	elf_release_view (state, &split_debug_view[i], error_callback, data);
+    }
+  if (opd)
+    elf_release_view (state, &opd->view, error_callback, data);
+  if (descriptor >= 0)
+    backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+/* Data passed to phdr_callback.  */
+
+struct phdr_data
+{
+  struct backtrace_state *state;
+  backtrace_error_callback error_callback;
+  void *data;
+  fileline *fileline_fn;
+  int *found_sym;
+  int *found_dwarf;
+  const char *exe_filename;
+  int exe_descriptor;
+};
+
+/* Callback passed to dl_iterate_phdr.  Load debug info from shared
+   libraries.  */
+
+static int
+#ifdef __i386__
+__attribute__ ((__force_align_arg_pointer__))
+#endif
+phdr_callback (struct dl_phdr_info *info, size_t size ATTRIBUTE_UNUSED,
+	       void *pdata)
+{
+  struct phdr_data *pd = (struct phdr_data *) pdata;
+  const char *filename;
+  int descriptor;
+  int does_not_exist;
+  fileline elf_fileline_fn;
+  int found_dwarf;
+
+  /* There is not much we can do if we don't have the module name,
+     unless executable is ET_DYN, where we expect the very first
+     phdr_callback to be for the PIE.  */
+  if (info->dlpi_name == NULL || info->dlpi_name[0] == '\0')
+    {
+      if (pd->exe_descriptor == -1)
+	return 0;
+      filename = pd->exe_filename;
+      descriptor = pd->exe_descriptor;
+      pd->exe_descriptor = -1;
+    }
+  else
+    {
+      if (pd->exe_descriptor != -1)
+	{
+	  backtrace_close (pd->exe_descriptor, pd->error_callback, pd->data);
+	  pd->exe_descriptor = -1;
+	}
+
+      filename = info->dlpi_name;
+      descriptor = backtrace_open (info->dlpi_name, pd->error_callback,
+				   pd->data, &does_not_exist);
+      if (descriptor < 0)
+	return 0;
+    }
+
+  if (elf_add (pd->state, filename, descriptor, NULL, 0, info->dlpi_addr,
+	       pd->error_callback, pd->data, &elf_fileline_fn, pd->found_sym,
+	       &found_dwarf, NULL, 0, 0, NULL, 0))
+    {
+      if (found_dwarf)
+	{
+	  *pd->found_dwarf = 1;
+	  *pd->fileline_fn = elf_fileline_fn;
+	}
+    }
+
+  return 0;
+}
+
+/* Initialize the backtrace data we need from an ELF executable.  At
+   the ELF level, all we need to do is find the debug info
+   sections.  */
+
+int
+backtrace_initialize (struct backtrace_state *state, const char *filename,
+		      int descriptor, backtrace_error_callback error_callback,
+		      void *data, fileline *fileline_fn)
+{
+  int ret;
+  int found_sym;
+  int found_dwarf;
+  fileline elf_fileline_fn = elf_nodebug;
+  struct phdr_data pd;
+
+  ret = elf_add (state, filename, descriptor, NULL, 0, 0, error_callback, data,
+		 &elf_fileline_fn, &found_sym, &found_dwarf, NULL, 1, 0, NULL,
+		 0);
+  if (!ret)
+    return 0;
+
+  pd.state = state;
+  pd.error_callback = error_callback;
+  pd.data = data;
+  pd.fileline_fn = &elf_fileline_fn;
+  pd.found_sym = &found_sym;
+  pd.found_dwarf = &found_dwarf;
+  pd.exe_filename = filename;
+  pd.exe_descriptor = ret < 0 ? descriptor : -1;
+
+  dl_iterate_phdr (phdr_callback, (void *) &pd);
+
+  if (!state->threaded)
+    {
+      if (found_sym)
+	state->syminfo_fn = elf_syminfo;
+      else if (state->syminfo_fn == NULL)
+	state->syminfo_fn = elf_nosyms;
+    }
+  else
+    {
+      if (found_sym)
+	backtrace_atomic_store_pointer (&state->syminfo_fn, elf_syminfo);
+      else
+	(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
+					     elf_nosyms);
+    }
+
+  if (!state->threaded)
+    *fileline_fn = state->fileline_fn;
+  else
+    *fileline_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+
+  if (*fileline_fn == NULL || *fileline_fn == elf_nodebug)
+    *fileline_fn = elf_fileline_fn;
+
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/fileline.c b/fluent-bit/lib/libbacktrace-8602fda/fileline.c
new file mode 100644
index 000000000..0472f4721
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/fileline.c
@@ -0,0 +1,346 @@
+/* fileline.c -- Get file and line number information in a backtrace.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#if defined (HAVE_KERN_PROC_ARGS) || defined (HAVE_KERN_PROC)
+#include <sys/sysctl.h>
+#endif
+
+#ifdef HAVE_MACH_O_DYLD_H
+#include <mach-o/dyld.h>
+#endif
+
+#include "backtrace.h"
+#include "internal.h"
+
+#ifndef HAVE_GETEXECNAME
+#define getexecname() NULL
+#endif
+
+#if !defined (HAVE_KERN_PROC_ARGS) && !defined (HAVE_KERN_PROC)
+
+#define sysctl_exec_name1(state, error_callback, data) NULL
+#define sysctl_exec_name2(state, error_callback, data) NULL
+
+#else /* defined (HAVE_KERN_PROC_ARGS) || |defined (HAVE_KERN_PROC) */
+
+static char *
+sysctl_exec_name (struct backtrace_state *state,
+		  int mib0, int mib1, int mib2, int mib3,
+		  backtrace_error_callback error_callback, void *data)
+{
+  int mib[4];
+  size_t len;
+  char *name;
+  size_t rlen;
+
+  mib[0] = mib0;
+  mib[1] = mib1;
+  mib[2] = mib2;
+  mib[3] = mib3;
+
+  if (sysctl (mib, 4, NULL, &len, NULL, 0) < 0)
+    return NULL;
+  name = (char *) backtrace_alloc (state, len, error_callback, data);
+  if (name == NULL)
+    return NULL;
+  rlen = len;
+  if (sysctl (mib, 4, name, &rlen, NULL, 0) < 0)
+    {
+      backtrace_free (state, name, len, error_callback, data);
+      return NULL;
+    }
+  return name;
+}
+
+#ifdef HAVE_KERN_PROC_ARGS
+
+static char *
+sysctl_exec_name1 (struct backtrace_state *state,
+		   backtrace_error_callback error_callback, void *data)
+{
+  /* This variant is used on NetBSD.  */
+  return sysctl_exec_name (state, CTL_KERN, KERN_PROC_ARGS, -1,
+			   KERN_PROC_PATHNAME, error_callback, data);
+}
+
+#else
+
+#define sysctl_exec_name1(state, error_callback, data) NULL
+
+#endif
+
+#ifdef HAVE_KERN_PROC
+
+static char *
+sysctl_exec_name2 (struct backtrace_state *state,
+		   backtrace_error_callback error_callback, void *data)
+{
+  /* This variant is used on FreeBSD.  */
+  return sysctl_exec_name (state, CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1,
+			   error_callback, data);
+}
+
+#else
+
+#define sysctl_exec_name2(state, error_callback, data) NULL
+
+#endif
+
+#endif /* defined (HAVE_KERN_PROC_ARGS) || |defined (HAVE_KERN_PROC) */
+
+#ifdef HAVE_MACH_O_DYLD_H
+
+static char *
+macho_get_executable_path (struct backtrace_state *state,
+			   backtrace_error_callback error_callback, void *data)
+{
+  uint32_t len;
+  char *name;
+
+  len = 0;
+  if (_NSGetExecutablePath (NULL, &len) == 0)
+    return NULL;
+  name = (char *) backtrace_alloc (state, len, error_callback, data);
+  if (name == NULL)
+    return NULL;
+  if (_NSGetExecutablePath (name, &len) != 0)
+    {
+      backtrace_free (state, name, len, error_callback, data);
+      return NULL;
+    }
+  return name;
+}
+
+#else /* !defined (HAVE_MACH_O_DYLD_H) */
+
+#define macho_get_executable_path(state, error_callback, data) NULL
+
+#endif /* !defined (HAVE_MACH_O_DYLD_H) */
+
+/* Initialize the fileline information from the executable.  Returns 1
+   on success, 0 on failure.  */
+
+static int
+fileline_initialize (struct backtrace_state *state,
+		     backtrace_error_callback error_callback, void *data)
+{
+  int failed;
+  fileline fileline_fn;
+  int pass;
+  int called_error_callback;
+  int descriptor;
+  const char *filename;
+  char buf[64];
+
+  if (!state->threaded)
+    failed = state->fileline_initialization_failed;
+  else
+    failed = backtrace_atomic_load_int (&state->fileline_initialization_failed);
+
+  if (failed)
+    {
+      error_callback (data, "failed to read executable information", -1);
+      return 0;
+    }
+
+  if (!state->threaded)
+    fileline_fn = state->fileline_fn;
+  else
+    fileline_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+  if (fileline_fn != NULL)
+    return 1;
+
+  /* We have not initialized the information.  Do it now.  */
+
+  descriptor = -1;
+  called_error_callback = 0;
+  for (pass = 0; pass < 8; ++pass)
+    {
+      int does_not_exist;
+
+      switch (pass)
+	{
+	case 0:
+	  filename = state->filename;
+	  break;
+	case 1:
+	  filename = getexecname ();
+	  break;
+	case 2:
+	  filename = "/proc/self/exe";
+	  break;
+	case 3:
+	  filename = "/proc/curproc/file";
+	  break;
+	case 4:
+	  snprintf (buf, sizeof (buf), "/proc/%ld/object/a.out",
+		    (long) getpid ());
+	  filename = buf;
+	  break;
+	case 5:
+	  filename = sysctl_exec_name1 (state, error_callback, data);
+	  break;
+	case 6:
+	  filename = sysctl_exec_name2 (state, error_callback, data);
+	  break;
+	case 7:
+	  filename = macho_get_executable_path (state, error_callback, data);
+	  break;
+	default:
+	  abort ();
+	}
+
+      if (filename == NULL)
+	continue;
+
+      descriptor = backtrace_open (filename, error_callback, data,
+				   &does_not_exist);
+      if (descriptor < 0 && !does_not_exist)
+	{
+	  called_error_callback = 1;
+	  break;
+	}
+      if (descriptor >= 0)
+	break;
+    }
+
+  if (descriptor < 0)
+    {
+      if (!called_error_callback)
+	{
+	  if (state->filename != NULL)
+	    error_callback (data, state->filename, ENOENT);
+	  else
+	    error_callback (data,
+			    "libbacktrace could not find executable to open",
+			    0);
+	}
+      failed = 1;
+    }
+
+  if (!failed)
+    {
+      if (!backtrace_initialize (state, filename, descriptor, error_callback,
+				 data, &fileline_fn))
+	failed = 1;
+    }
+
+  if (failed)
+    {
+      if (!state->threaded)
+	state->fileline_initialization_failed = 1;
+      else
+	backtrace_atomic_store_int (&state->fileline_initialization_failed, 1);
+      return 0;
+    }
+
+  if (!state->threaded)
+    state->fileline_fn = fileline_fn;
+  else
+    {
+      backtrace_atomic_store_pointer (&state->fileline_fn, fileline_fn);
+
+      /* Note that if two threads initialize at once, one of the data
+	 sets may be leaked.  */
+    }
+
+  return 1;
+}
+
+/* Given a PC, find the file name, line number, and function name.  */
+
+int
+backtrace_pcinfo (struct backtrace_state *state, uintptr_t pc,
+		  backtrace_full_callback callback,
+		  backtrace_error_callback error_callback, void *data)
+{
+  if (!fileline_initialize (state, error_callback, data))
+    return 0;
+
+  if (state->fileline_initialization_failed)
+    return 0;
+
+  return state->fileline_fn (state, pc, callback, error_callback, data);
+}
+
+/* Given a PC, find the symbol for it, and its value.  */
+
+int
+backtrace_syminfo (struct backtrace_state *state, uintptr_t pc,
+		   backtrace_syminfo_callback callback,
+		   backtrace_error_callback error_callback, void *data)
+{
+  if (!fileline_initialize (state, error_callback, data))
+    return 0;
+
+  if (state->fileline_initialization_failed)
+    return 0;
+
+  state->syminfo_fn (state, pc, callback, error_callback, data);
+  return 1;
+}
+
+/* A backtrace_syminfo_callback that can call into a
+   backtrace_full_callback, used when we have a symbol table but no
+   debug info.  */
+
+void
+backtrace_syminfo_to_full_callback (void *data, uintptr_t pc,
+				    const char *symname,
+				    uintptr_t symval ATTRIBUTE_UNUSED,
+				    uintptr_t symsize ATTRIBUTE_UNUSED)
+{
+  struct backtrace_call_full *bdata = (struct backtrace_call_full *) data;
+
+  bdata->ret = bdata->full_callback (bdata->full_data, pc, NULL, 0, symname);
+}
+
+/* An error callback that corresponds to
+   backtrace_syminfo_to_full_callback.  */
+
+void
+backtrace_syminfo_to_full_error_callback (void *data, const char *msg,
+					  int errnum)
+{
+  struct backtrace_call_full *bdata = (struct backtrace_call_full *) data;
+
+  bdata->full_error_callback (bdata->full_data, msg, errnum);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/filenames.h b/fluent-bit/lib/libbacktrace-8602fda/filenames.h
new file mode 100644
index 000000000..aa7bd7adf
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/filenames.h
@@ -0,0 +1,52 @@
+/* btest.c -- Filename header for libbacktrace library
+   Copyright (C) 2012-2018 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#ifndef GCC_VERSION
+# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
+#endif
+
+#if (GCC_VERSION < 2007)
+# define __attribute__(x)
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+#if defined(__MSDOS__) || defined(_WIN32) || defined(__OS2__) || defined (__CYGWIN__)
+# define IS_DIR_SEPARATOR(c) ((c) == '/' || (c) == '\\')
+# define HAS_DRIVE_SPEC(f) ((f)[0] != '\0' && (f)[1] == ':')
+# define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]) || HAS_DRIVE_SPEC(f))
+#else
+# define IS_DIR_SEPARATOR(c) ((c) == '/')
+# define IS_ABSOLUTE_PATH(f) (IS_DIR_SEPARATOR((f)[0]))
+#endif
diff --git a/fluent-bit/lib/libbacktrace-8602fda/filetype.awk b/fluent-bit/lib/libbacktrace-8602fda/filetype.awk
new file mode 100644
index 000000000..1eefa7e72
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/filetype.awk
@@ -0,0 +1,13 @@
+# An awk script to determine the type of a file.
+/^\177ELF\001/      { if (NR == 1) { print "elf32"; exit } }
+/^\177ELF\002/      { if (NR == 1) { print "elf64"; exit } }
+/^\114\001/         { if (NR == 1) { print "pecoff"; exit } }
+/^\144\206/         { if (NR == 1) { print "pecoff"; exit } }
+/^\001\337/         { if (NR == 1) { print "xcoff32"; exit } }
+/^\001\367/         { if (NR == 1) { print "xcoff64"; exit } }
+/^\376\355\372\316/ { if (NR == 1) { print "macho"; exit } }
+/^\316\372\355\376/ { if (NR == 1) { print "macho"; exit } }
+/^\376\355\372\317/ { if (NR == 1) { print "macho"; exit } }
+/^\317\372\355\376/ { if (NR == 1) { print "macho"; exit } }
+/^\312\376\272\276/ { if (NR == 1) { print "macho"; exit } }
+/^\276\272\376\312/ { if (NR == 1) { print "macho"; exit } }
diff --git a/fluent-bit/lib/libbacktrace-8602fda/install-debuginfo-for-buildid.sh.in b/fluent-bit/lib/libbacktrace-8602fda/install-debuginfo-for-buildid.sh.in
new file mode 100644
index 000000000..1364779d7
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/install-debuginfo-for-buildid.sh.in
@@ -0,0 +1,65 @@
+#!/bin/sh
+
+# install-debug-info-for-buildid.sh -- Helper script for libbacktrace library
+# testing.
+# Copyright (C) 2019-2021 Free Software Foundation, Inc.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+
+#     (1) Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+
+#     (2) Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the
+#     distribution.
+
+#     (3) The name of the author may not be used to
+#     endorse or promote products derived from this software without
+#     specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+# Extract build-id from src, and copy debug info of src to
+# $build_id_dir/aa/bb...zz.debug.
+
+set -e
+
+sed=@SED@
+awk=@AWK@
+grep=@GREP@
+objcopy=@OBJCOPY@
+readelf=@READELF@
+mkdir_p="@MKDIR_P@"
+
+build_id_dir="$1"
+src="$2"
+
+buildid=$($readelf -n $src \
+	      | $grep "Build ID" \
+	      | $awk '{print $3}')
+
+prefix=$(echo $buildid \
+	     | $sed 's/^\(.\{2\}\).*/\1/')
+
+remainder=$(echo $buildid \
+		| $sed 's/^.\{2\}//')
+
+dir=$build_id_dir/$prefix
+dst=$dir/$remainder.debug
+
+$mkdir_p $dir
+
+$objcopy --only-keep-debug $src $dst
diff --git a/fluent-bit/lib/libbacktrace-8602fda/install-sh b/fluent-bit/lib/libbacktrace-8602fda/install-sh
new file mode 100755
index 000000000..0b0fdcbba
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/install-sh
@@ -0,0 +1,501 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2013-12-25.23; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+tab='	'
+nl='
+'
+IFS=" $tab$nl"
+
+# Set DOITPROG to "echo" to test this script.
+
+doit=${DOITPROG-}
+doit_exec=${doit:-exec}
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+is_target_a_directory=possibly
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve the last data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -s            $stripprog installed files.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
+
+    -o) chowncmd="$chownprog $2"
+        shift;;
+
+    -s) stripcmd=$stripprog;;
+
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
+
+    -T) is_target_a_directory=never;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --) shift
+        break;;
+
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename; won't work
+    # if double slashes aren't ignored.
+    if test -d "$dst"; then
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
+      fi
+      dstdir=$dst
+      dst=$dstdir/`basename "$src"`
+      dstdir_status=0
+    else
+      dstdir=`dirname "$dst"`
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+        # Create intermediate dirs using mode 755 as modified by the umask.
+        # This is like FreeBSD 'install' as of 1997-10-28.
+        umask=`umask`
+        case $stripcmd.$umask in
+          # Optimize common cases.
+          *[2367][2367]) mkdir_umask=$umask;;
+          .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+          *[0-7])
+            mkdir_umask=`expr $umask + 22 \
+              - $umask % 100 % 40 + $umask % 20 \
+              - $umask % 10 % 4 + $umask % 2
+            `;;
+          *) mkdir_umask=$umask,go-w;;
+        esac
+
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+        case $umask in
+          *[123567][0-7][0-7])
+            # POSIX mkdir -p sets u+wx bits regardless of umask, which
+            # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+            ;;
+          *)
+            tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+            trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+            if (umask $mkdir_umask &&
+                exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+            then
+              if test -z "$dir_arg" || {
+                   # Check for POSIX incompatibilities with -m.
+                   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+                   # other-writable bit of parent directory when it shouldn't.
+                   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+                   ls_ld_tmpdir=`ls -ld "$tmpdir"`
+                   case $ls_ld_tmpdir in
+                     d????-?r-*) different_mode=700;;
+                     d????-?--*) different_mode=755;;
+                     *) false;;
+                   esac &&
+                   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+                     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+                     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+                   }
+                 }
+              then posix_mkdir=:
+              fi
+              rmdir "$tmpdir/d" "$tmpdir"
+            else
+              # Remove any dirs left behind by ancient mkdir implementations.
+              rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+            fi
+            trap '' 0;;
+        esac;;
+    esac
+
+    if
+      $posix_mkdir && (
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # The umask is ridiculous, or mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
+      esac
+
+      oIFS=$IFS
+      IFS=/
+      set -f
+      set fnord $dstdir
+      shift
+      set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask=$mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=$dstdir/_inst.$$_
+    rmtmp=$dstdir/_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       set +f &&
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd -f "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/instrumented_alloc.c b/fluent-bit/lib/libbacktrace-8602fda/instrumented_alloc.c
new file mode 100644
index 000000000..13af81a6d
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/instrumented_alloc.c
@@ -0,0 +1,114 @@
+/* instrumented_alloc.c -- Memory allocation instrumented to fail when
+   requested, for testing purposes.
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* Include all the header files of alloc here, to make sure they're not
+   processed when including alloc.c below, such that the redefinitions of malloc
+   and realloc are only effective in alloc.c itself.  This does not work for
+   config.h, because it's not wrapped in "#ifndef CONFIG_H\n#define CONFIG_H"
+   and "#endif" but that does not seem to be harmful.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <inttypes.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+extern void *instrumented_malloc (size_t size);
+extern void *instrumented_realloc (void *ptr, size_t size);
+
+#define malloc instrumented_malloc
+#define realloc instrumented_realloc
+#include "alloc.c"
+#undef malloc
+#undef realloc
+
+static uint64_t nr_allocs = 0;
+static uint64_t fail_at_alloc = 0;
+
+extern int at_fail_alloc_p (void);
+extern uint64_t get_nr_allocs (void);
+extern void set_fail_at_alloc (uint64_t);
+
+void *
+instrumented_malloc (size_t size)
+{
+  void *res;
+
+  if (at_fail_alloc_p ())
+    return NULL;
+
+  res = malloc (size);
+  if (res != NULL)
+    nr_allocs++;
+
+  return res;
+}
+
+void *
+instrumented_realloc (void *ptr, size_t size)
+{
+  void *res;
+
+  if (size != 0)
+    {
+      if (at_fail_alloc_p ())
+	return NULL;
+    }
+
+  res = realloc (ptr, size);
+  if (res != NULL)
+    nr_allocs++;
+
+  return res;
+}
+
+int
+at_fail_alloc_p (void)
+{
+  return fail_at_alloc == nr_allocs + 1;
+}
+
+uint64_t
+get_nr_allocs (void)
+{
+  return nr_allocs;
+}
+
+void
+set_fail_at_alloc (uint64_t nr)
+{
+  fail_at_alloc = nr;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/internal.h b/fluent-bit/lib/libbacktrace-8602fda/internal.h
new file mode 100644
index 000000000..bb481f373
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/internal.h
@@ -0,0 +1,380 @@
+/* internal.h -- Internal header file for stack backtrace library.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#ifndef BACKTRACE_INTERNAL_H
+#define BACKTRACE_INTERNAL_H
+
+/* We assume that <sys/types.h> and "backtrace.h" have already been
+   included.  */
+
+#ifndef GCC_VERSION
+# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
+#endif
+
+#if (GCC_VERSION < 2007)
+# define __attribute__(x)
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+#ifndef ATTRIBUTE_MALLOC
+# if (GCC_VERSION >= 2096)
+#  define ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+# else
+#  define ATTRIBUTE_MALLOC
+# endif
+#endif
+
+#ifndef ATTRIBUTE_FALLTHROUGH
+# if (GCC_VERSION >= 7000)
+#  define ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+# else
+#  define ATTRIBUTE_FALLTHROUGH
+# endif
+#endif
+
+#ifndef HAVE_SYNC_FUNCTIONS
+
+/* Define out the sync functions.  These should never be called if
+   they are not available.  */
+
+#define __sync_bool_compare_and_swap(A, B, C) (abort(), 1)
+#define __sync_lock_test_and_set(A, B) (abort(), 0)
+#define __sync_lock_release(A) abort()
+
+#endif /* !defined (HAVE_SYNC_FUNCTIONS) */
+
+#ifdef HAVE_ATOMIC_FUNCTIONS
+
+/* We have the atomic builtin functions.  */
+
+#define backtrace_atomic_load_pointer(p) \
+    __atomic_load_n ((p), __ATOMIC_ACQUIRE)
+#define backtrace_atomic_load_int(p) \
+    __atomic_load_n ((p), __ATOMIC_ACQUIRE)
+#define backtrace_atomic_store_pointer(p, v) \
+    __atomic_store_n ((p), (v), __ATOMIC_RELEASE)
+#define backtrace_atomic_store_size_t(p, v) \
+    __atomic_store_n ((p), (v), __ATOMIC_RELEASE)
+#define backtrace_atomic_store_int(p, v) \
+    __atomic_store_n ((p), (v), __ATOMIC_RELEASE)
+
+#else /* !defined (HAVE_ATOMIC_FUNCTIONS) */
+#ifdef HAVE_SYNC_FUNCTIONS
+
+/* We have the sync functions but not the atomic functions.  Define
+   the atomic ones in terms of the sync ones.  */
+
+extern void *backtrace_atomic_load_pointer (void *);
+extern int backtrace_atomic_load_int (int *);
+extern void backtrace_atomic_store_pointer (void *, void *);
+extern void backtrace_atomic_store_size_t (size_t *, size_t);
+extern void backtrace_atomic_store_int (int *, int);
+
+#else /* !defined (HAVE_SYNC_FUNCTIONS) */
+
+/* We have neither the sync nor the atomic functions.  These will
+   never be called.  */
+
+#define backtrace_atomic_load_pointer(p) (abort(), (void *) NULL)
+#define backtrace_atomic_load_int(p) (abort(), 0)
+#define backtrace_atomic_store_pointer(p, v) abort()
+#define backtrace_atomic_store_size_t(p, v) abort()
+#define backtrace_atomic_store_int(p, v) abort()
+
+#endif /* !defined (HAVE_SYNC_FUNCTIONS) */
+#endif /* !defined (HAVE_ATOMIC_FUNCTIONS) */
+
+/* The type of the function that collects file/line information.  This
+   is like backtrace_pcinfo.  */
+
+typedef int (*fileline) (struct backtrace_state *state, uintptr_t pc,
+			 backtrace_full_callback callback,
+			 backtrace_error_callback error_callback, void *data);
+
+/* The type of the function that collects symbol information.  This is
+   like backtrace_syminfo.  */
+
+typedef void (*syminfo) (struct backtrace_state *state, uintptr_t pc,
+			 backtrace_syminfo_callback callback,
+			 backtrace_error_callback error_callback, void *data);
+
+/* What the backtrace state pointer points to.  */
+
+struct backtrace_state
+{
+  /* The name of the executable.  */
+  const char *filename;
+  /* Non-zero if threaded.  */
+  int threaded;
+  /* The master lock for fileline_fn, fileline_data, syminfo_fn,
+     syminfo_data, fileline_initialization_failed and everything the
+     data pointers point to.  */
+  void *lock;
+  /* The function that returns file/line information.  */
+  fileline fileline_fn;
+  /* The data to pass to FILELINE_FN.  */
+  void *fileline_data;
+  /* The function that returns symbol information.  */
+  syminfo syminfo_fn;
+  /* The data to pass to SYMINFO_FN.  */
+  void *syminfo_data;
+  /* Whether initializing the file/line information failed.  */
+  int fileline_initialization_failed;
+  /* The lock for the freelist.  */
+  int lock_alloc;
+  /* The freelist when using mmap.  */
+  struct backtrace_freelist_struct *freelist;
+};
+
+/* Open a file for reading.  Returns -1 on error.  If DOES_NOT_EXIST
+   is not NULL, *DOES_NOT_EXIST will be set to 0 normally and set to 1
+   if the file does not exist.  If the file does not exist and
+   DOES_NOT_EXIST is not NULL, the function will return -1 and will
+   not call ERROR_CALLBACK.  On other errors, or if DOES_NOT_EXIST is
+   NULL, the function will call ERROR_CALLBACK before returning.  */
+extern int backtrace_open (const char *filename,
+			   backtrace_error_callback error_callback,
+			   void *data,
+			   int *does_not_exist);
+
+/* A view of the contents of a file.  This supports mmap when
+   available.  A view will remain in memory even after backtrace_close
+   is called on the file descriptor from which the view was
+   obtained.  */
+
+struct backtrace_view
+{
+  /* The data that the caller requested.  */
+  const void *data;
+  /* The base of the view.  */
+  void *base;
+  /* The total length of the view.  */
+  size_t len;
+};
+
+/* Create a view of SIZE bytes from DESCRIPTOR at OFFSET.  Store the
+   result in *VIEW.  Returns 1 on success, 0 on error.  */
+extern int backtrace_get_view (struct backtrace_state *state, int descriptor,
+			       off_t offset, uint64_t size,
+			       backtrace_error_callback error_callback,
+			       void *data, struct backtrace_view *view);
+
+/* Release a view created by backtrace_get_view.  */
+extern void backtrace_release_view (struct backtrace_state *state,
+				    struct backtrace_view *view,
+				    backtrace_error_callback error_callback,
+				    void *data);
+
+/* Close a file opened by backtrace_open.  Returns 1 on success, 0 on
+   error.  */
+
+extern int backtrace_close (int descriptor,
+			    backtrace_error_callback error_callback,
+			    void *data);
+
+/* Sort without using memory.  */
+
+extern void backtrace_qsort (void *base, size_t count, size_t size,
+			     int (*compar) (const void *, const void *));
+
+/* Allocate memory.  This is like malloc.  If ERROR_CALLBACK is NULL,
+   this does not report an error, it just returns NULL.  */
+
+extern void *backtrace_alloc (struct backtrace_state *state, size_t size,
+			      backtrace_error_callback error_callback,
+			      void *data) ATTRIBUTE_MALLOC;
+
+/* Free memory allocated by backtrace_alloc.  If ERROR_CALLBACK is
+   NULL, this does not report an error.  */
+
+extern void backtrace_free (struct backtrace_state *state, void *mem,
+			    size_t size,
+			    backtrace_error_callback error_callback,
+			    void *data);
+
+/* A growable vector of some struct.  This is used for more efficient
+   allocation when we don't know the final size of some group of data
+   that we want to represent as an array.  */
+
+struct backtrace_vector
+{
+  /* The base of the vector.  */
+  void *base;
+  /* The number of bytes in the vector.  */
+  size_t size;
+  /* The number of bytes available at the current allocation.  */
+  size_t alc;
+};
+
+/* Grow VEC by SIZE bytes.  Return a pointer to the newly allocated
+   bytes.  Note that this may move the entire vector to a new memory
+   location.  Returns NULL on failure.  */
+
+extern void *backtrace_vector_grow (struct backtrace_state *state, size_t size,
+				    backtrace_error_callback error_callback,
+				    void *data,
+				    struct backtrace_vector *vec);
+
+/* Finish the current allocation on VEC.  Prepare to start a new
+   allocation.  The finished allocation will never be freed.  Returns
+   a pointer to the base of the finished entries, or NULL on
+   failure.  */
+
+extern void* backtrace_vector_finish (struct backtrace_state *state,
+				      struct backtrace_vector *vec,
+				      backtrace_error_callback error_callback,
+				      void *data);
+
+/* Release any extra space allocated for VEC.  This may change
+   VEC->base.  Returns 1 on success, 0 on failure.  */
+
+extern int backtrace_vector_release (struct backtrace_state *state,
+				     struct backtrace_vector *vec,
+				     backtrace_error_callback error_callback,
+				     void *data);
+
+/* Free the space managed by VEC.  This will reset VEC.  */
+
+static inline void
+backtrace_vector_free (struct backtrace_state *state,
+		       struct backtrace_vector *vec,
+		       backtrace_error_callback error_callback, void *data)
+{
+  vec->alc += vec->size;
+  vec->size = 0;
+  backtrace_vector_release (state, vec, error_callback, data);
+}
+
+/* Read initial debug data from a descriptor, and set the
+   fileline_data, syminfo_fn, and syminfo_data fields of STATE.
+   Return the fileln_fn field in *FILELN_FN--this is done this way so
+   that the synchronization code is only implemented once.  This is
+   called after the descriptor has first been opened.  It will close
+   the descriptor if it is no longer needed.  Returns 1 on success, 0
+   on error.  There will be multiple implementations of this function,
+   for different file formats.  Each system will compile the
+   appropriate one.  */
+
+extern int backtrace_initialize (struct backtrace_state *state,
+				 const char *filename,
+				 int descriptor,
+				 backtrace_error_callback error_callback,
+				 void *data,
+				 fileline *fileline_fn);
+
+/* An enum for the DWARF sections we care about.  */
+
+enum dwarf_section
+{
+  DEBUG_INFO,
+  DEBUG_LINE,
+  DEBUG_ABBREV,
+  DEBUG_RANGES,
+  DEBUG_STR,
+  DEBUG_ADDR,
+  DEBUG_STR_OFFSETS,
+  DEBUG_LINE_STR,
+  DEBUG_RNGLISTS,
+
+  DEBUG_MAX
+};
+
+/* Data for the DWARF sections we care about.  */
+
+struct dwarf_sections
+{
+  const unsigned char *data[DEBUG_MAX];
+  size_t size[DEBUG_MAX];
+};
+
+/* DWARF data read from a file, used for .gnu_debugaltlink.  */
+
+struct dwarf_data;
+
+/* Add file/line information for a DWARF module.  */
+
+extern int backtrace_dwarf_add (struct backtrace_state *state,
+				uintptr_t base_address,
+				const struct dwarf_sections *dwarf_sections,
+				int is_bigendian,
+				struct dwarf_data *fileline_altlink,
+				backtrace_error_callback error_callback,
+				void *data, fileline *fileline_fn,
+				struct dwarf_data **fileline_entry);
+
+/* A data structure to pass to backtrace_syminfo_to_full.  */
+
+struct backtrace_call_full
+{
+  backtrace_full_callback full_callback;
+  backtrace_error_callback full_error_callback;
+  void *full_data;
+  int ret;
+};
+
+/* A backtrace_syminfo_callback that can call into a
+   backtrace_full_callback, used when we have a symbol table but no
+   debug info.  */
+
+extern void backtrace_syminfo_to_full_callback (void *data, uintptr_t pc,
+						const char *symname,
+						uintptr_t symval,
+						uintptr_t symsize);
+
+/* An error callback that corresponds to
+   backtrace_syminfo_to_full_callback.  */
+
+extern void backtrace_syminfo_to_full_error_callback (void *, const char *,
+						      int);
+
+/* A test-only hook for elf_uncompress_zdebug.  */
+
+extern int backtrace_uncompress_zdebug (struct backtrace_state *,
+					const unsigned char *compressed,
+					size_t compressed_size,
+					backtrace_error_callback, void *data,
+					unsigned char **uncompressed,
+					size_t *uncompressed_size);
+
+/* A test-only hook for elf_uncompress_lzma.  */
+
+extern int backtrace_uncompress_lzma (struct backtrace_state *,
+				      const unsigned char *compressed,
+				      size_t compressed_size,
+				      backtrace_error_callback, void *data,
+				      unsigned char **uncompressed,
+				      size_t *uncompressed_size);
+
+#endif
diff --git a/fluent-bit/lib/libbacktrace-8602fda/libtool.m4 b/fluent-bit/lib/libbacktrace-8602fda/libtool.m4
new file mode 100644
index 000000000..17f8e5f30
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/libtool.m4
@@ -0,0 +1,7436 @@
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+])
+
+# serial 56 LT_INIT
+
+
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_defun([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+       [m4_default([$3],
+		   [m4_fatal([Libtool version $1 or higher is required],
+		             63)])],
+       [$2])])
+
+
+# _LT_CHECK_BUILDDIR
+# ------------------
+# Complain if the absolute build directory name contains unusual characters
+m4_defun([_LT_CHECK_BUILDDIR],
+[case `pwd` in
+  *\ * | *\	*)
+    AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
+esac
+])
+
+
+# LT_INIT([OPTIONS])
+# ------------------
+AC_DEFUN([LT_INIT],
+[AC_PREREQ([2.58])dnl We use AC_INCLUDES_DEFAULT
+AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_BEFORE([$0], [LT_LANG])dnl
+AC_BEFORE([$0], [LT_OUTPUT])dnl
+AC_BEFORE([$0], [LTDL_INIT])dnl
+m4_require([_LT_CHECK_BUILDDIR])dnl
+
+dnl Autoconf doesn't catch unexpanded LT_ macros by default:
+m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl
+m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl
+dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4
+dnl unless we require an AC_DEFUNed macro:
+AC_REQUIRE([LTOPTIONS_VERSION])dnl
+AC_REQUIRE([LTSUGAR_VERSION])dnl
+AC_REQUIRE([LTVERSION_VERSION])dnl
+AC_REQUIRE([LTOBSOLETE_VERSION])dnl
+m4_require([_LT_PROG_LTMAIN])dnl
+
+_LT_SHELL_INIT([SHELL=${CONFIG_SHELL-/bin/sh}])
+
+dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+AC_SUBST(LIBTOOL)dnl
+
+_LT_SETUP
+
+# Only expand once:
+m4_define([LT_INIT])
+])# LT_INIT
+
+# Old names:
+AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT])
+AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PROG_LIBTOOL], [])
+dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
+
+
+# _LT_CC_BASENAME(CC)
+# -------------------
+# Calculate cc_basename.  Skip known compiler wrappers and cross-prefix.
+m4_defun([_LT_CC_BASENAME],
+[for cc_temp in $1""; do
+  case $cc_temp in
+    compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
+    distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+])
+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
+# sensibly after `m4_require([_LT_FILEUTILS_DEFAULTS])'.
+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+])# _LT_FILEUTILS_DEFAULTS
+
+
+# _LT_SETUP
+# ---------
+m4_defun([_LT_SETUP],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+AC_REQUIRE([_LT_PREPARE_SED_QUOTE_VARS])dnl
+AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl
+
+_LT_DECL([], [host_alias], [0], [The host system])dnl
+_LT_DECL([], [host], [0])dnl
+_LT_DECL([], [host_os], [0])dnl
+dnl
+_LT_DECL([], [build_alias], [0], [The build system])dnl
+_LT_DECL([], [build], [0])dnl
+_LT_DECL([], [build_os], [0])dnl
+dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+dnl
+AC_REQUIRE([AC_PROG_LN_S])dnl
+test -z "$LN_S" && LN_S="ln -s"
+_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
+dnl
+AC_REQUIRE([LT_CMD_MAX_LEN])dnl
+_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
+_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
+dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+
+_LT_CONFIG_LIBTOOL_INIT([
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+])
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    _LT_PATH_MAGIC
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
+
+
+# _LT_PREPARE_SED_QUOTE_VARS
+# --------------------------
+# Define a few sed substitution that help us do robust quoting.
+m4_defun([_LT_PREPARE_SED_QUOTE_VARS],
+[# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\([["`\\]]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+])
+
+# _LT_PROG_LTMAIN
+# ---------------
+# Note that this code is called both from `configure', and `config.status'
+# now that we use AC_CONFIG_COMMANDS to generate libtool.  Notably,
+# `config.status' has no value for ac_aux_dir unless we are using Automake,
+# so we pass a copy along to make sure it has a sensible value anyway.
+m4_defun([_LT_PROG_LTMAIN],
+[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl
+_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir'])
+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+## ------------------------------------- ##
+## Accumulate code for creating libtool. ##
+## ------------------------------------- ##
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
+# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL_INIT],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_INIT],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_INIT])
+
+
+# _LT_CONFIG_LIBTOOL([COMMANDS])
+# ------------------------------
+# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS])
+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
+# Add leading comment marks to the start of each line, and a trailing
+# full-stop to the whole comment if one is not present already.
+m4_define([_LT_FORMAT_COMMENT],
+[m4_ifval([$1], [
+m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])],
+              [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.])
+)])
+
+
+
+## ------------------------ ##
+## FIXME: Eliminate VARNAME ##
+## ------------------------ ##
+
+
+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
+# -------------------------------------------------------------------
+# CONFIGNAME is the name given to the value in the libtool script.
+# VARNAME is the (base) name used in the configure script.
+# VALUE may be 0, 1 or 2 for a computed quote escaped value based on
+# VARNAME.  Any other value will be used directly.
+m4_define([_LT_DECL],
+[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
+    [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
+	[m4_ifval([$1], [$1], [$2])])
+    lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+    m4_ifval([$4],
+	[lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
+    lt_dict_add_subkey([lt_decl_dict], [$2],
+	[tagged?], [m4_ifval([$5], [yes], [no])])])
+])
+
+
+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
+# --------------------------------------------------------
+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+  [0], [m4_fatal([$0: too few arguments: $#])],
+  [1], [m4_fatal([$0: too few arguments: $#: $1])],
+  [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
+  [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
+  [lt_dict_filter([lt_decl_dict], $@)])[]dnl
+])
+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
+# --------------------------------------------------
+m4_define([lt_decl_quote_varnames],
+[_lt_decl_filter([value], [1], $@)])
+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_dquote_varnames],
+[_lt_decl_filter([value], [2], $@)])
+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_varnames_tagged],
+[m4_assert([$# <= 2])dnl
+_$0(m4_quote(m4_default([$1], [[, ]])),
+    m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
+    m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+     m4_if([$2], [],
+	   m4_quote(lt_decl_varnames),
+	m4_quote(m4_shift($@))))[]dnl
+])
+m4_define([_lt_decl_all_varnames],
+[lt_join($@, lt_decl_varnames_tagged([$1],
+			lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
+])
+
+
+# _LT_CONFIG_STATUS_DECLARE([VARNAME])
+# ------------------------------------
+# Quote a variable value, and forward it to `config.status' so that its
+# declaration there will have the same value as in `configure'.  VARNAME
+# must have a single quote delimited value for this to work.
+m4_define([_LT_CONFIG_STATUS_DECLARE],
+[$1='`$ECHO "$][$1" | $SED "$delay_single_quote_subst"`'])
+
+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
+# we write them to config.status, we have to be sure to quote all
+# embedded single quotes properly.  In configure, this macro expands
+# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
+#
+#    <var>='`$ECHO "$<var>" | $SED "$delay_single_quote_subst"`'
+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
+    [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAGS
+# ----------------
+# Output comment and list of tags supported by the script
+m4_defun([_LT_LIBTOOL_TAGS],
+[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
+available_tags="_LT_TAGS"dnl
+])
+
+
+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
+# expand to a commented shell variable setting:
+#
+#    # Some comment about what VAR is for.
+#    visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+					   [description])))[]dnl
+m4_pushdef([_libtool_name],
+    m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+    [0], [_libtool_name=[$]$1],
+    [1], [_libtool_name=$lt_[]$1],
+    [2], [_libtool_name=$lt_[]$1],
+    [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script.  Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+    m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS.  Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'.  Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+	dnl If the libtool generation code has been placed in $CONFIG_LT,
+	dnl instead of duplicating it all over again into config.status,
+	dnl then we will have config.status run $CONFIG_LT later, so it
+	dnl needs to know what name is stored there:
+        [AC_CONFIG_COMMANDS([libtool],
+            [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+    dnl If the libtool generation code is destined for config.status,
+    dnl expand the accumulated commands and init code now:
+    [AC_CONFIG_COMMANDS([libtool],
+        [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$[]1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+# _LT_GENERATED_FILE_INIT(FILE, [COMMENT])
+# ------------------------------------
+# Generate a child script FILE with all initialization necessary to
+# reuse the environment learned by the parent script, and make the
+# file executable.  If COMMENT is supplied, it is inserted after the
+# `#!' sequence but before initialization text begins.  After this
+# macro, additional text can be appended to FILE to form the body of
+# the child script.  The macro ends with non-zero status if the
+# file could not be fully written (such as if the disk is full).
+m4_ifdef([AS_INIT_GENERATED],
+[m4_defun([_LT_GENERATED_FILE_INIT],[AS_INIT_GENERATED($@)])],
+[m4_defun([_LT_GENERATED_FILE_INIT],
+[m4_require([AS_PREPARE])]dnl
+[m4_pushdef([AS_MESSAGE_LOG_FD])]dnl
+[lt_write_fail=0
+cat >$1 <<_ASEOF || lt_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+$2
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$1 <<\_ASEOF || lt_write_fail=1
+AS_SHELL_SANITIZE
+_AS_PREPARE
+exec AS_MESSAGE_FD>&1
+_ASEOF
+test $lt_write_fail = 0 && chmod +x $1[]dnl
+m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+_LT_GENERATED_FILE_INIT(["$CONFIG_LT"],
+[# Run this file to recreate a libtool stub with the current configuration.])
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+lt_cl_silent=false
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+  echo
+  AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+  -h, --help      print this help, then exit
+  -V, --version   print version number, then exit
+  -q, --quiet     do not print progress messages
+  -d, --debug     don't remove temporary files
+
+Report bugs to <bug-libtool@gnu.org>."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2009 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+  case $[1] in
+    --version | --v* | -V )
+      echo "$lt_cl_version"; exit 0 ;;
+    --help | --h* | -h )
+      echo "$lt_cl_help"; exit 0 ;;
+    --debug | --d* | -d )
+      debug=: ;;
+    --quiet | --q* | --silent | --s* | -q )
+      lt_cl_silent=: ;;
+
+    -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+    *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+  esac
+  shift
+done
+
+if $lt_cl_silent; then
+  exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure.  Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+lt_cl_success=:
+test "$silent" = yes &&
+  lt_config_lt_args="$lt_config_lt_args --quiet"
+exec AS_MESSAGE_LOG_FD>/dev/null
+$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+exec AS_MESSAGE_LOG_FD>>config.log
+$lt_cl_success || AS_EXIT(1)
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars.  Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+  m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+  m4_if(_LT_TAG, [C], [
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+  _LT_PROG_LTMAIN
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '/^# Generated shell functions inserted here/q' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  _LT_PROG_XSI_SHELLFNS
+
+  sed -n '/^# Generated shell functions inserted here/,$p' "$ltmain" >> "$cfgfile" \
+    || (rm -f "$cfgfile"; exit 1)
+
+  mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+#    autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+  [C],			[_LT_LANG(C)],
+  [C++],		[_LT_LANG(CXX)],
+  [Java],		[_LT_LANG(GCJ)],
+  [Fortran 77],		[_LT_LANG(F77)],
+  [Fortran],		[_LT_LANG(FC)],
+  [Windows Resource],	[_LT_LANG(RC)],
+  [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+    [_LT_LANG($1)],
+    [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+  [LT_SUPPORTED_TAG([$1])dnl
+  m4_append([_LT_TAGS], [$1 ])dnl
+  m4_define([_LT_LANG_]$1[_enabled], [])dnl
+  _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+  [LT_LANG(CXX)],
+  [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+  [LT_LANG(F77)],
+  [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+  [LT_LANG(FC)],
+  [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+  [LT_LANG(GCJ)],
+  [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+    [LT_LANG(GCJ)],
+    [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+      [LT_LANG(GCJ)],
+      [m4_ifdef([AC_PROG_GCJ],
+	[m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([A][M_PROG_GCJ],
+	[m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([LT_PROG_GCJ],
+	[m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+  [LT_LANG(RC)],
+  [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+AU_DEFUN([AC_LIBTOOL_RC], [LT_LANG(Windows Resource)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+dnl AC_DEFUN([AC_LIBTOOL_RC], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+  case $host_os in
+    rhapsody* | darwin*)
+    AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+    AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+    AC_CHECK_TOOL([LIPO], [lipo], [:])
+    AC_CHECK_TOOL([OTOOL], [otool], [:])
+    AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+    _LT_DECL([], [DSYMUTIL], [1],
+      [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+    _LT_DECL([], [NMEDIT], [1],
+      [Tool to change global to local symbols on Mac OS X])
+    _LT_DECL([], [LIPO], [1],
+      [Tool to manipulate fat objects and archives on Mac OS X])
+    _LT_DECL([], [OTOOL], [1],
+      [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+    _LT_DECL([], [OTOOL64], [1],
+      [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+    AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+      [lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	if test -f libconftest.dylib && test ! -s conftest.err && test $_lt_result = 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&AS_MESSAGE_LOG_FD
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi])
+    AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+      [lt_cv_ld_exported_symbols_list],
+      [lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+	[lt_cv_ld_exported_symbols_list=yes],
+	[lt_cv_ld_exported_symbols_list=no])
+	LDFLAGS="$save_LDFLAGS"
+    ])
+    AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load],
+      [lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
+      echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+      $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -f conftest && test ! -s conftest.err && test $_lt_result = 0 && $GREP forced_load conftest 2>&1 >/dev/null; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&AS_MESSAGE_LOG_FD
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+    ])
+    # Allow for Darwin 4-7 (macOS 10.0-10.3) although these are not expect to
+    # build without first building modern cctools / linker.
+    case $host_cpu-$host_os in
+    *-rhapsody* | *-darwin1.[[012]])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    *-darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    *-darwin*)
+      # darwin 5.x (macOS 10.1) onwards we only need to adjust when the
+      # deployment target is forced to an earlier version.
+      case ${MACOSX_DEPLOYMENT_TARGET-UNSET},$host in
+	UNSET,*-darwin[[89]]*|UNSET,*-darwin[[12]][[0123456789]]*)
+	  ;;
+	10.[[012]][[,.]]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress'
+	  ;;
+	*)
+	  ;;
+     esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES
+# --------------------------
+# Checks for linker and compiler features on Darwin / macOS / iOS
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+  m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_automatic, $1)=yes
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    _LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+  else
+    _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+  fi
+  _LT_TAGVAR(link_all_deplibs, $1)=yes
+  _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+    m4_if([$1], [CXX],
+[   if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+      _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+      _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+    fi
+],[])
+  else
+  _LT_TAGVAR(ld_shlibs, $1)=no
+  fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX
+# -----------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+AC_LINK_IFELSE([AC_LANG_SOURCE([AC_LANG_PROGRAM])],[
+lt_aix_libpath_sed='
+    /Import File Strings/,/^$/ {
+	/^0/ {
+	    s/^0  *\(.*\)$/\1/
+	    p
+	}
+    }'
+aix_libpath=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+# Check for a 64-bit object if we didn't find anything.
+if test -z "$aix_libpath"; then
+  aix_libpath=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+fi],[])
+if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[m4_divert_text([M4SH-INIT], [$1
+])])# _LT_SHELL_INIT
+
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Find how we can fake an echo command that does not interpret backslash.
+# In particular, with Autoconf 2.60 or later we add some code to the start
+# of the generated configure script which will find a shell with a builtin
+# printf (which we can use as an echo command).
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+AC_MSG_CHECKING([how to print strings])
+# Test print first, because it will be a builtin if present.
+if test "X`print -r -- -n 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$[]1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO "$*" 
+}
+
+case "$ECHO" in
+  printf*) AC_MSG_RESULT([printf]) ;;
+  print*) AC_MSG_RESULT([print -r]) ;;
+  *) AC_MSG_RESULT([cat]) ;;
+esac
+
+m4_ifdef([_AS_DETECT_SUGGESTED],
+[_AS_DETECT_SUGGESTED([
+  test -n "${ZSH_VERSION+set}${BASH_VERSION+set}" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test "X`printf %s $ECHO`" = "X$ECHO" \
+      || test "X`print -r -- $ECHO`" = "X$ECHO" )])])
+
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1], [An echo program that protects backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+  [AS_HELP_STRING([--disable-libtool-lock],
+    [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    case `/usr/bin/file conftest.o` in
+	      *x86-64*)
+		LD="${LD-ld} -m elf32_x86_64"
+		;;
+	      *)
+		LD="${LD-ld} -m elf_i386"
+		;;
+	    esac
+	    ;;
+	  powerpc64le-*linux*)
+	    LD="${LD-ld} -m elf32lppclinux"
+	    ;;
+	  powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  powerpcle-*linux*)
+	    LD="${LD-ld} -m elf64lppc"
+	    ;;
+	  powerpc-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+    [AC_LANG_PUSH(C)
+     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+     AC_LANG_POP])
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+sparc*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*) LD="${LD-ld} -m elf64_sparc" ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[AC_CHECK_TOOL(AR, ar, false)
+test -z "$AR" && AR=ar
+test -z "$AR_FLAGS" && AR_FLAGS=cru
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1])
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+    [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+    [Commands used to build an old-style archive])
+_LT_DECL([], [lock_old_archive_extraction], [0],
+    [Whether to use a lock for old archive extraction])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#		[OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$3"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       $2=yes
+     fi
+   fi
+   $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$5], , :, [$5])
+else
+    m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#                  [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $3"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&AS_MESSAGE_LOG_FD
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         $2=yes
+       fi
+     else
+       $2=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$4], , :, [$4])
+else
+    m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+  i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[	 ]]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`func_fallback_echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+  AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+  AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+    [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+#                      ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+  [$4]
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+[#line __oline__ "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include <dlfcn.h>
+#endif
+
+#include <stdio.h>
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+void fnord () __attribute__((visibility("default")));
+#endif
+
+void fnord () { int i=42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}]
+_LT_EOF
+  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) $1 ;;
+      x$lt_dlneed_uscore) $2 ;;
+      x$lt_dlunknown|x*) $3 ;;
+    esac
+  else :
+    # compilation failed
+    $3
+  fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ])
+    ;;
+
+  *)
+    AC_CHECK_FUNC([shl_load],
+	  [lt_cv_dlopen="shl_load"],
+      [AC_CHECK_LIB([dld], [shl_load],
+	    [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+	[AC_CHECK_FUNC([dlopen],
+	      [lt_cv_dlopen="dlopen"],
+	  [AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+	    [AC_CHECK_LIB([svld], [dlopen],
+		  [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+	      [AC_CHECK_LIB([dld], [dld_link],
+		    [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+	      ])
+	    ])
+	  ])
+	])
+      ])
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    AC_CACHE_CHECK([whether a program can dlopen itself],
+	  lt_cv_dlopen_self, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+	    lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+    ])
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+	  lt_cv_dlopen_self_static, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+	    lt_cv_dlopen_self_static=no,  lt_cv_dlopen_self_static=cross)
+      ])
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+	 [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+	 [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+	 [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+     fi
+   fi
+   chmod u+w . 2>&AS_MESSAGE_LOG_FD
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+	[Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  AC_MSG_CHECKING([if we can lock with hard links])
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  AC_MSG_RESULT([$hard_links])
+  if test "$hard_links" = no; then
+    AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+         [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+  [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+   test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+   test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+     test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+    # Linking always hardcodes the temporary library directory.
+    _LT_TAGVAR(hardcode_action, $1)=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    _LT_TAGVAR(hardcode_action, $1)=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+   test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+    [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      AC_MSG_RESULT([yes])
+    else
+      AC_MSG_RESULT([no])
+    fi
+    ;;
+  *)
+    AC_MSG_RESULT([no])
+    ;;
+  esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+	[], [
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([[A-Za-z]]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+  if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([[A-Za-z]]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[[4-9]]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[[01]] | aix4.[[01]].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib<name>.so
+      # instead of lib<name>.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[[45]]*)
+  version_type=linux
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$host_os in
+  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+m4_if([$1], [],[
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    ;;
+
+  *)
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    ;;
+  esac
+  dynamic_linker='Win32 ld.exe'
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[[23]].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+  freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+haiku*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/beos/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[[3-9]]*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be Linux ELF.
+
+# uclinux* changes (here and below) have been submitted to the libtool
+# project, but have not yet been accepted: they are GCC-local changes
+# for the time being.  (See
+# https://lists.gnu.org/archive/html/libtool-patches/2018-05/msg00000.html)
+linux* | k*bsd*-gnu | kopensolaris*-gnu | gnu* | uclinuxfdpiceabi)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath],
+    [lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+	 LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+      [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+	 [lt_cv_shlibpath_overrides_runpath=yes])])
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+    ])
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[[89]] | openbsd2.[[89]].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+    [Variables whose values should be saved in libtool wrapper scripts and
+    restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+    [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0],  [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+    [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+    [[List of archive names.  First name is the real one, the rest are links.
+    The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+    [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [install_override_mode], [1],
+    [Permission mode override for installation of shared libraries])
+_LT_DECL([], [postinstall_cmds], [2],
+    [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+    [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+    [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+    [[As "finish_cmds", except a single script fragment to be evaled but
+    not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+    [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+    [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+    [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] |  ?:[\\/]*])
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word.  This closes a longstanding sh security hole.
+  ac_dummy="m4_if([$2], , $PATH, [$2])"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$1; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  AC_MSG_RESULT($MAGIC_CMD)
+else
+  AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+	 [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+  else
+    MAGIC_CMD=:
+  fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_PROG_ECHO_BACKSLASH])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+	[assume the C compiler uses GNU ld @<:@default=no@:>@])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
+      *GNU* | *'with BFD'*)
+	test "$with_gnu_ld" != no && break
+	;;
+      *)
+	test "$with_gnu_ld" != yes && break
+	;;
+      esac
+    fi
+  done
+  IFS="$lt_save_ifs"
+else
+  lt_cv_path_LD="$LD" # Let the user override the test with a path.
+fi])
+LD="$lt_cv_path_LD"
+if test -n "$LD"; then
+  AC_MSG_RESULT($LD)
+else
+  AC_MSG_RESULT(no)
+fi
+test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
+_LT_PATH_LD_GNU
+AC_SUBST([LD])
+
+_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
+])# LT_PATH_LD
+
+# Old names:
+AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
+AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_LD], [])
+dnl AC_DEFUN([AC_PROG_LD], [])
+
+
+# _LT_PATH_LD_GNU
+#- --------------
+m4_defun([_LT_PATH_LD_GNU],
+[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
+[# I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 </dev/null` in
+*GNU* | *'with BFD'*)
+  lt_cv_prog_gnu_ld=yes
+  ;;
+*)
+  lt_cv_prog_gnu_ld=no
+  ;;
+esac])
+with_gnu_ld=$lt_cv_prog_gnu_ld
+])# _LT_PATH_LD_GNU
+
+
+# _LT_CMD_RELOAD
+# --------------
+# find reload flag for linker
+#   -- PORTME Some linkers may need a different reload flag.
+m4_defun([_LT_CMD_RELOAD],
+[AC_CACHE_CHECK([for $LD option to reload object files],
+  lt_cv_ld_reload_flag,
+  [lt_cv_ld_reload_flag='-r'])
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+  darwin*)
+    if test "$GCC" = yes; then
+      reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+    else
+      reload_cmds='$LD$reload_flag -o $output$reload_objs'
+    fi
+    ;;
+esac
+_LT_TAGDECL([], [reload_flag], [1], [How to create reloadable object files])dnl
+_LT_TAGDECL([], [reload_cmds], [2])dnl
+])# _LT_CMD_RELOAD
+
+
+# _LT_CHECK_MAGIC_METHOD
+# ----------------------
+# how to check for library dependencies
+#  -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_MAGIC_METHOD],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+AC_CACHE_CHECK([how to recognize dependent libraries],
+lt_cv_deplibs_check_method,
+[lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[[4-9]]*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+beos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+bsdi[[45]]*)
+  lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
+  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_test_file=/shlib/libc.so
+  ;;
+
+cygwin*)
+  # func_win32_libid is a shell function defined in ltmain.sh
+  lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+  lt_cv_file_magic_cmd='func_win32_libid'
+  ;;
+
+mingw* | pw32*)
+  # Base MSYS/MinGW do not provide the 'file' command needed by
+  # func_win32_libid shell function, so use a weaker test based on 'objdump',
+  # unless we find 'file', for example because we are cross-compiling.
+  # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
+  if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    lt_cv_deplibs_check_method='file_magic file format pei*-i386(.*architecture: i386)?'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]']
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]]\.[[0-9]]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[[3-9]]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be Linux ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+])
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+    [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+    [Command to use when deplibs_check_method == "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :)
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+  AC_SUBST([DUMPBIN])
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+  [lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: output\"" >&AS_MESSAGE_LOG_FD)
+  cat conftest.out >&AS_MESSAGE_LOG_FD
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
+  # These system don't have libm, or don't need it
+  ;;
+*-ncr-sysv4.3*)
+  AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+  AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+  ;;
+*)
+  AC_CHECK_LIB(m, cos, LIBM="-lm")
+  ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -Xcompiler -fno-builtin' ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' ;;
+  esac
+
+  _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+    lt_cv_prog_compiler_rtti_exceptions,
+    [-fno-rtti -fno-exceptions], [],
+    [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+	[Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[[BCDT]]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[[ABCDGISTW]]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[[ABCDEGRST]]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[[BCDEGRST]]'
+  ;;
+osf*)
+  symcode='[[BCDEGQRST]]'
+  ;;
+solaris*)
+  symcode='[[BDRT]]'
+  ;;
+sco3.2v5*)
+  symcode='[[DT]]'
+  ;;
+sysv4.2uw2*)
+  symcode='[[DT]]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[[ABDT]]'
+  ;;
+sysv4)
+  symcode='[[DFNSTU]]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\) $/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK ['"\
+"     {last_section=section; section=\$ 3};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx]"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[	 ]]\($symcode$symcode*\)[[	 ]][[	 ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if AC_TRY_EVAL(ac_compile); then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+const struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_save_LIBS="$LIBS"
+	  lt_save_CFLAGS="$CFLAGS"
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+	  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS="$lt_save_LIBS"
+	  CFLAGS="$lt_save_CFLAGS"
+	else
+	  echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+    fi
+  else
+    echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  AC_MSG_RESULT(failed)
+else
+  AC_MSG_RESULT(ok)
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+    [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+    [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+    [lt_cv_sys_global_symbol_to_c_name_address], [1],
+    [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+    [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+    [Transform the output of nm in a C name address pair when lib prefix is needed])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+AC_MSG_CHECKING([for $compiler option to produce PIC])
+m4_if([$1], [CXX], [
+  # C++ specific cases for pic, static, wl, etc.
+  if test "$GXX" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+    aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+    mingw* | cygwin* | os2* | pw32* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+    *djgpp*)
+      # DJGPP does not support shared libraries at all
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+      ;;
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+    *qnx* | *nto*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+  else
+    case $host_os in
+      aix[[4-9]]*)
+	# All AIX code is PIC.
+	if test "$host_cpu" = ia64; then
+	  # AIX 5 now supports IA64 processor
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	else
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+	fi
+	;;
+      chorus*)
+	case $cc_basename in
+	cxch68*)
+	  # Green Hills C++ Compiler
+	  # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+	  ;;
+	esac
+	;;
+      dgux*)
+	case $cc_basename in
+	  ec++*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  ghcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      freebsd* | dragonfly*)
+	# FreeBSD uses GNU C++
+	;;
+      hpux9* | hpux10* | hpux11*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    if test "$host_cpu" != ia64; then
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	    fi
+	    ;;
+	  aCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    case $host_cpu in
+	    hppa*64*|ia64*)
+	      # +Z the default
+	      ;;
+	    *)
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	      ;;
+	    esac
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      interix*)
+	# This is c89, which is MS Visual C++ (no shared libs)
+	# Anyone wants to do a port?
+	;;
+      irix5* | irix6* | nonstopux*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    # CC pic flag -KPIC is the default.
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+	case $cc_basename in
+	  KCC*)
+	    # KAI C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    ;;
+	  ecpc* )
+	    # old Intel C++ for x86_64 which still supported -KPIC.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  icpc* )
+	    # Intel C++, used to be incompatible with GCC.
+	    # ICC 10 doesn't accept -KPIC any more.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  pgCC* | pgcpp*)
+	    # Portland Group C++ compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  cxx*)
+	    # Compaq C++
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*)
+	    # IBM XL 8.0, 9.0 on PPC and BlueGene
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+      lynxos*)
+	;;
+      m88k*)
+	;;
+      mvs*)
+	case $cc_basename in
+	  cxx*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      netbsd*)
+	;;
+      *qnx* | *nto*)
+        # QNX uses GNU C++, but need to define -shared option too, otherwise
+        # it will coredump.
+        _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+        ;;
+      osf3* | osf4* | osf5*)
+	case $cc_basename in
+	  KCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    ;;
+	  RCC*)
+	    # Rational C++ 2.4.1
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  cxx*)
+	    # Digital/Compaq C++
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      psos*)
+	;;
+      solaris*)
+	case $cc_basename in
+	  CC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	    ;;
+	  gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sunos4*)
+	case $cc_basename in
+	  CC*)
+	    # Sun C++ 4.x
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  lcc*)
+	    # Lucid
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	esac
+	;;
+      tandem*)
+	case $cc_basename in
+	  NCC*)
+	    # NonStop-UX NCC 3.20
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      vxworks*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+	;;
+    esac
+  fi
+],
+[
+  if test "$GCC" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker '
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Xcompiler -fPIC'
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      else
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC (with -KPIC) is the default.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+        ;;
+      ccc*)
+        _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+        # All Alpha code is PIC.
+        _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ F* | *Sun*Fortran*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # All OSF/1 code is PIC.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    rdos*)
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    unicos*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+    esac
+  fi
+])
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+    ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+    ;;
+esac
+AC_MSG_RESULT([$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+	[How to pass a linker flag through the compiler])
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+  _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+    [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+    [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+    [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+     "" | " "*) ;;
+     *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+     esac],
+    [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+     _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+	[Additional compiler flags for building library objects])
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+  _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+  $lt_tmp_static_flag,
+  [],
+  [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+	[Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  case $host_os in
+  aix[[4-9]]*)
+    # If we're using GNU nm, then we don't want the "-C" option.
+    # -C means demangle to AIX nm, but means don't demangle with GNU nm
+    # Also, AIX nm treats weak defined symbols like other global defined
+    # symbols, whereas GNU nm marks them as "W".
+    if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    else
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    fi
+    ;;
+  pw32*)
+    _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+  ;;
+  cygwin* | mingw* | cegcc*)
+    _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;/^.*[[ ]]__nm__/s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+  ;;
+  *)
+    _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  ;;
+  esac
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+], [
+  runpath_var=
+  _LT_TAGVAR(allow_undefined_flag, $1)=
+  _LT_TAGVAR(always_export_symbols, $1)=no
+  _LT_TAGVAR(archive_cmds, $1)=
+  _LT_TAGVAR(archive_expsym_cmds, $1)=
+  _LT_TAGVAR(compiler_needs_object, $1)=no
+  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+  _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  _LT_TAGVAR(hardcode_automatic, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+  _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+  _LT_TAGVAR(hardcode_minus_L, $1)=no
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  _LT_TAGVAR(inherit_rpath, $1)=no
+  _LT_TAGVAR(link_all_deplibs, $1)=unknown
+  _LT_TAGVAR(module_cmds, $1)=
+  _LT_TAGVAR(module_expsym_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+  _LT_TAGVAR(thread_safe_flag_spec, $1)=
+  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  _LT_TAGVAR(include_expsyms, $1)=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  esac
+
+  _LT_TAGVAR(ld_shlibs, $1)=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[[2-9]]*) ;;
+	  *\ \(GNU\ Binutils\)\ [[3-9]]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[[3-9]]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	# Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	_LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+      # as there is no search path for DLLs.
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=no
+      _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	_LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    haiku*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    interix[[3-9]]*)
+      _LT_TAGVAR(hardcode_direct, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu | uclinuxfdpiceabi)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=' $pic_flag'
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+	  tmp_sharedflag='--shared' ;;
+	xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	_LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+	  _LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='-rpath $libdir'
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $compiler_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $compiler_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        _LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+    esac
+
+    if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+      runpath_var=
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	_LT_TAGVAR(hardcode_direct, $1)=unsupported
+      fi
+      ;;
+
+    aix[[4-9]]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "L")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      _LT_TAGVAR(archive_cmds, $1)=''
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[[012]]|aix4.[[012]].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	_LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        _LT_SYS_MODULE_PATH_AIX
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	  _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 _LT_SYS_MODULE_PATH_AIX
+	 _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	  _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	  fi
+	  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[[45]]*)
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      # Tell ltmain to make .lib files, not .a files.
+      libext=lib
+      # Tell ltmain to make .dll files, not .so files.
+      shrext_cmds=".dll"
+      # FIXME: Setting linknames here is a bad hack.
+      _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+      # The linker will automatically build a .lib file if we build a DLL.
+      _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+      # FIXME: Should let the user specify the lib program.
+      _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+      _LT_TAGVAR(fix_srcfile_path, $1)='`cygpath -w "$srcfile"`'
+      _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      ;;
+
+    darwin* | rhapsody*)
+      _LT_DARWIN_LINKER_FEATURES($1)
+      ;;
+
+    dgux*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared -o $lib $libobjs $deplibs $compiler_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)='+b $libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	_LT_TAGVAR(hardcode_minus_L, $1)=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	m4_if($1, [], [
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  _LT_LINKER_OPTION([if $CC understands -b],
+	    _LT_TAGVAR(lt_cv_prog_compiler__b, $1), [-b],
+	    [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'],
+	    [_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'])],
+	  [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'])
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  ;;
+	*)
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+        save_LDFLAGS="$LDFLAGS"
+        LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+        AC_LINK_IFELSE([AC_LANG_SOURCE([int foo(void) {}])],
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+        )
+        LDFLAGS="$save_LDFLAGS"
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(inherit_rpath, $1)=yes
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    netbsd*)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+	     _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	     ;;
+	   *)
+	     _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    os2*)
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      case $host_os in
+      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+        ;;
+	motorola)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4.3*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	_LT_TAGVAR(ld_shlibs, $1)=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      _LT_TAGVAR(ld_shlibs, $1)=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+    [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+  # Assume -lc should be added
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $_LT_TAGVAR(archive_cmds, $1) in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      AC_CACHE_CHECK([whether -lc should be explicitly linked in],
+	[lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1),
+	[$RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+	  pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+	  _LT_TAGVAR(allow_undefined_flag, $1)=
+	  if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+	  then
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	  else
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  fi
+	  _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+	])
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+    [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+    [enable_shared_with_static_runtimes], [0],
+    [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+    [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+    [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+    [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+    [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+    [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+    [Commands used to build a loadable module if different from building
+    a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+    [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+    [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+    [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+    [Flag to hardcode $libdir into a binary during linking.
+    This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec_ld], [1],
+    [[If ld is used when linking, flag to hardcode $libdir into a binary
+    during linking.  This must work even if $libdir does not exist]])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+    [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary and the resulting library dependency is
+    "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+    library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+    [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+    [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+    [Set to "yes" if building a shared library automatically hardcodes DIR
+    into the library and all subsequent libraries and executables linked
+    against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+    [Set to yes if linker adds runtime paths of dependent libraries
+    to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+    [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [fix_srcfile_path], [1],
+    [Fix the shell variable $srcfile for the compiler])
+_LT_TAGDECL([], [always_export_symbols], [0],
+    [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+    [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+    [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+    [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+    [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [file_list_spec], [1],
+    [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl    [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_SYS_DYNAMIC_LINKER($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+  LT_SYS_DLOPEN_SELF
+  _LT_CMD_STRIPLIB
+
+  # Report which library types will actually be built
+  AC_MSG_CHECKING([if libtool supports shared libraries])
+  AC_MSG_RESULT([$can_build_shared])
+
+  AC_MSG_CHECKING([whether to build shared libraries])
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[[4-9]]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  AC_MSG_RESULT([$enable_shared])
+
+  AC_MSG_CHECKING([whether to build static libraries])
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  AC_MSG_RESULT([$enable_static])
+
+  _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+    ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+    (test "X$CXX" != "Xg++"))) ; then
+  AC_PROG_CXXCPP
+else
+  _lt_caught_CXX_error=yes
+fi
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="int some_variable = 0;"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC=$CC
+  lt_save_LD=$LD
+  lt_save_GCC=$GCC
+  GCC=$GXX
+  lt_save_with_gnu_ld=$with_gnu_ld
+  lt_save_path_LD=$lt_cv_path_LD
+  if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+    lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+  else
+    $as_unset lt_cv_prog_gnu_ld
+  fi
+  if test -n "${lt_cv_path_LDCXX+set}"; then
+    lt_cv_path_LD=$lt_cv_path_LDCXX
+  else
+    $as_unset lt_cv_path_LD
+  fi
+  test -z "${LDCXX+set}" || LD=$LDCXX
+  CC=${CXX-"c++"}
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    # We don't want -fno-exception when compiling C++ code, so set the
+    # no_builtin_flag separately
+    if test "$GXX" = yes; then
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+    else
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+    fi
+
+    if test "$GXX" = yes; then
+      # Set up default GNU C++ configuration
+
+      LT_PATH_LD
+
+      # Check if GNU C++ uses GNU ld as the underlying linker, since the
+      # archiving commands below assume that GNU ld is being used.
+      if test "$with_gnu_ld" = yes; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+        # If archive_cmds runs LD, not CC, wlarc should be empty
+        # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+        #     investigate it a little bit more. (MM)
+        wlarc='${wl}'
+
+        # ancient GNU ld didn't support --whole-archive et. al.
+        if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+	  $GREP 'no-whole-archive' > /dev/null; then
+          _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+        else
+          _LT_TAGVAR(whole_archive_flag_spec, $1)=
+        fi
+      else
+        with_gnu_ld=no
+        wlarc=
+
+        # A generic and very simple default shared library creation
+        # command for GNU C++ for the case where it uses the native
+        # linker, instead of GNU ld.  If possible, this setting should
+        # overridden to take advantage of the native linker features on
+        # the platform it is being used on.
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+      fi
+
+      # Commands to make compiler produce verbose output that lists
+      # what "hidden" libraries, object files and flags are used when
+      # linking a shared library.
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+    else
+      GXX=no
+      with_gnu_ld=no
+      wlarc=
+    fi
+
+    # PORTME: fill in a description of your system's C++ link characteristics
+    AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+    _LT_TAGVAR(ld_shlibs, $1)=yes
+    case $host_os in
+      aix3*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+      aix[[4-9]]*)
+        if test "$host_cpu" = ia64; then
+          # On IA64, the linker does run time linking by default, so we don't
+          # have to do anything special.
+          aix_use_runtimelinking=no
+          exp_sym_flag='-Bexport'
+          no_entry_flag=""
+        else
+          aix_use_runtimelinking=no
+
+          # Test if we are trying to use run time linking or normal
+          # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+          # need to do runtime linking.
+          case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	    for ld_flag in $LDFLAGS; do
+	      case $ld_flag in
+	      *-brtl*)
+	        aix_use_runtimelinking=yes
+	        break
+	        ;;
+	      esac
+	    done
+	    ;;
+          esac
+
+          exp_sym_flag='-bexport'
+          no_entry_flag='-bnoentry'
+        fi
+
+        # When large executables or shared objects are built, AIX ld can
+        # have problems creating the table of contents.  If linking a library
+        # or program results in "error TOC overflow" add -mminimal-toc to
+        # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+        # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+        _LT_TAGVAR(archive_cmds, $1)=''
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+        if test "$GXX" = yes; then
+          case $host_os in aix4.[[012]]|aix4.[[012]].*)
+          # We only want to do this on AIX 4.2 and lower, the check
+          # below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	     strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	    # We have reworked collect2
+	    :
+	  else
+	    # We have old collect2
+	    _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	    # It fails to find uninstalled libraries when the uninstalled
+	    # path is not listed in the libpath.  Setting hardcode_minus_L
+	    # to unsupported forces relinking
+	    _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+          esac
+          shared_flag='-shared'
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag="$shared_flag "'${wl}-G'
+	  fi
+        else
+          # not using gcc
+          if test "$host_cpu" = ia64; then
+	  # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	  # chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+          else
+	    if test "$aix_use_runtimelinking" = yes; then
+	      shared_flag='${wl}-G'
+	    else
+	      shared_flag='${wl}-bM:SRE'
+	    fi
+          fi
+        fi
+
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+        # It seems that -bexpall does not export symbols beginning with
+        # underscore (_), so it is better to generate a list of symbols to
+	# export.
+        _LT_TAGVAR(always_export_symbols, $1)=yes
+        if test "$aix_use_runtimelinking" = yes; then
+          # Warning - without using the other runtime loading flags (-brtl),
+          # -berok will link without error, but may produce a broken library.
+          _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+          # Determine the default libpath from the value encoded in an empty
+          # executable.
+          _LT_SYS_MODULE_PATH_AIX
+          _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+        else
+          if test "$host_cpu" = ia64; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	    _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+          else
+	    # Determine the default libpath from the value encoded in an
+	    # empty executable.
+	    _LT_SYS_MODULE_PATH_AIX
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	    # Warning - without using the other run time loading flags,
+	    # -berok will link without error, but may produce a broken library.
+	    _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	    _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	    if test "$with_gnu_ld" = yes; then
+	      # We only use this code for GNU lds that support --whole-archive.
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    else
+	      # Exported symbols can be pulled into shared objects from archives
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	    fi
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	    # This is similar to how AIX traditionally builds its shared
+	    # libraries.
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+          fi
+        fi
+        ;;
+
+      beos*)
+	if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	  # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
+	  # support --undefined.  This deserves some investigation.  FIXME
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      chorus*)
+        case $cc_basename in
+          *)
+	  # FIXME: insert proper C++ library support
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	  ;;
+        esac
+        ;;
+
+      cygwin* | mingw* | pw32* | cegcc*)
+        # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+        # as there is no search path for DLLs.
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+        _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+        _LT_TAGVAR(always_export_symbols, $1)=no
+        _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+        if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+          # If the export-symbols file already is a .def file (1st line
+          # is EXPORTS), use it as is; otherwise, prepend...
+          _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	    cp $export_symbols $output_objdir/$soname.def;
+          else
+	    echo EXPORTS > $output_objdir/$soname.def;
+	    cat $export_symbols >> $output_objdir/$soname.def;
+          fi~
+          $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+        else
+          _LT_TAGVAR(ld_shlibs, $1)=no
+        fi
+        ;;
+      darwin* | rhapsody*)
+        _LT_DARWIN_LINKER_FEATURES($1)
+	;;
+
+      dgux*)
+        case $cc_basename in
+          ec++*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          ghcx*)
+	    # Green Hills C++ Compiler
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      freebsd2.*)
+        # C++ shared libraries reported to be fairly broken before
+	# switch to ELF
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      freebsd-elf*)
+        _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+        ;;
+
+      freebsd* | dragonfly*)
+        # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+        # conventions
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+        ;;
+
+      gnu*)
+        ;;
+
+      haiku*)
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        ;;
+
+      hpux9*)
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+				             # but as the default
+				             # location of the library.
+
+        case $cc_basename in
+          CC*)
+            # FIXME: insert proper C++ library support
+            _LT_TAGVAR(ld_shlibs, $1)=no
+            ;;
+          aCC*)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            # Commands to make compiler produce verbose output that lists
+            # what "hidden" libraries, object files and flags are used when
+            # linking a shared library.
+            #
+            # There doesn't appear to be a way to prevent this compiler from
+            # explicitly linking system object files so we need to strip them
+            # from the output so that they don't get included in the library
+            # dependencies.
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            ;;
+          *)
+            if test "$GXX" = yes; then
+              _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib -fPIC ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            else
+              # FIXME: insert proper C++ library support
+              _LT_TAGVAR(ld_shlibs, $1)=no
+            fi
+            ;;
+        esac
+        ;;
+
+      hpux10*|hpux11*)
+        if test $with_gnu_ld = no; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+          case $host_cpu in
+            hppa*64*|ia64*)
+              ;;
+            *)
+	      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+              ;;
+          esac
+        fi
+        case $host_cpu in
+          hppa*64*|ia64*)
+            _LT_TAGVAR(hardcode_direct, $1)=no
+            _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+            ;;
+          *)
+            _LT_TAGVAR(hardcode_direct, $1)=yes
+            _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+					         # but as the default
+					         # location of the library.
+            ;;
+        esac
+
+        case $cc_basename in
+          CC*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          aCC*)
+	    case $host_cpu in
+	      hppa*64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      ia64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      *)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	    esac
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test $with_gnu_ld = no; then
+	        case $host_cpu in
+	          hppa*64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          ia64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          *)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	        esac
+	      fi
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      interix[[3-9]]*)
+	_LT_TAGVAR(hardcode_direct, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+	# Instead, shared libraries are loaded at an image base (0x10000000 by
+	# default) and relocated if they conflict, which is a slow very memory
+	# consuming and fragmenting process.  To avoid this, we pick a random,
+	# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+	# time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	;;
+      irix5* | irix6*)
+        case $cc_basename in
+          CC*)
+	    # SGI C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test "$with_gnu_ld" = no; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	      else
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
+	      fi
+	    fi
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+	    ;;
+        esac
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(inherit_rpath, $1)=yes
+        ;;
+
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+	    ;;
+	  icpc* | ecpc* )
+	    # Intel C++
+	    with_gnu_ld=yes
+	    # version 8.0 and above of icpc choke on multiply defined symbols
+	    # if we add $predep_objects and $postdep_objects, however 7.1 and
+	    # earlier do not add the objects themselves.
+	    case `$CC -V 2>&1` in
+	      *"Version 7."*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	      *)  # Version 8.0 or newer
+	        tmp_idyn=
+	        case $host_cpu in
+		  ia64*) tmp_idyn=' -i_dynamic';;
+		esac
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	    esac
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    ;;
+          pgCC* | pgcpp*)
+            # Portland Group C++ compiler
+	    case `$CC -V` in
+	    *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*)
+	      _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+		compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"'
+	      _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+		$AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~
+		$RANLIB $oldlib'
+	      _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    *) # Version 6 and above use weak symbols
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+            ;;
+	  cxx*)
+	    # Compaq C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+	    runpath_var=LD_RUN_PATH
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "X$list" | $Xsed'
+	    ;;
+	  xl* | mpixl* | bgxl*)
+	    # IBM XL 8.0 on PPC, with GNU ld
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    if test "x$supports_anon_versioning" = xyes; then
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+		cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+		echo "local: *; };" >> $output_objdir/$libname.ver~
+		$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+	    fi
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	      _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+	      # Not sure whether something based on
+	      # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+	      # would be better.
+	      output_verbose_link_cmd='func_echo_all'
+
+	      # Archives containing C++ object files must be created using
+	      # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	      # necessary to make sure instantiated templates are included
+	      # in the archive.
+	      _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+
+      lynxos*)
+        # FIXME: insert proper C++ library support
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      m88k*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      mvs*)
+        case $cc_basename in
+          cxx*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	  *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	esac
+	;;
+
+      netbsd*)
+        if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable  -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+	  wlarc=
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	fi
+	# Workaround some broken pre-1.5 toolchains
+	output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+	;;
+
+      *nto* | *qnx*)
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+	;;
+
+      openbsd2*)
+        # C++ shared libraries are fairly broken
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      openbsd*)
+	if test -f /usr/libexec/ld.so; then
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+	  fi
+	  output_verbose_link_cmd=func_echo_all
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      osf3* | osf4* | osf5*)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Archives containing C++ object files must be created using
+	    # the KAI C++ compiler.
+	    case $host in
+	      osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+	      *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+	    esac
+	    ;;
+          RCC*)
+	    # Rational C++ 2.4.1
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          cxx*)
+	    case $host in
+	      osf3*)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && func_echo_all "${wl}-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+		;;
+	      *)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+	          echo "-hidden">> $lib.exp~
+	          $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp  `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~
+	          $RM $lib.exp'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+		;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+	  *)
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	      case $host in
+	        osf3*)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	        *)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	      esac
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	      # Commands to make compiler produce verbose output that lists
+	      # what "hidden" libraries, object files and flags are used when
+	      # linking a shared library.
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      psos*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      sunos4*)
+        case $cc_basename in
+          CC*)
+	    # Sun C++ 4.x
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          lcc*)
+	    # Lucid
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      solaris*)
+        case $cc_basename in
+          CC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+            _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+	    _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag}  -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	      $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	    _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	    case $host_os in
+	      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+	      *)
+		# The compiler driver will combine and reorder linker options,
+		# but understands `-z linker_flag'.
+	        # Supported since Solaris 2.6 (maybe 2.5.1?)
+		_LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	        ;;
+	    esac
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+	    output_verbose_link_cmd='func_echo_all'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	    ;;
+          gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+	    # The C++ compiler must be used to create the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    # GNU C++ compiler with Solaris linker
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+	      if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -shared -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      else
+	        # g++ 2.7 appears to require `-G' NOT `-shared' on this
+	        # platform.
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      fi
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+	      case $host_os in
+		solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+		*)
+		  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+		  ;;
+	      esac
+	    fi
+	    ;;
+        esac
+        ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      case $cc_basename in
+        CC*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+      esac
+      ;;
+
+      sysv5* | sco3.2v5* | sco5v6*)
+	# Note: We can NOT use -z defs as we might desire, because we do not
+	# link with -lc, and that would cause any symbols used from libc to
+	# always be unresolved, which means just about no library would
+	# ever link correctly.  If we're not using GNU ld we use -z text
+	# though, which does catch some bad symbols but isn't as heavy-handed
+	# as -z defs.
+	_LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+	_LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+	_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+	_LT_TAGVAR(link_all_deplibs, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+	runpath_var='LD_RUN_PATH'
+
+	case $cc_basename in
+          CC*)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Tprelink_objects $oldobjs~
+	      '"$_LT_TAGVAR(old_archive_cmds, $1)"
+	    _LT_TAGVAR(reload_cmds, $1)='$CC -Tprelink_objects $reload_objs~
+	      '"$_LT_TAGVAR(reload_cmds, $1)"
+	    ;;
+	  *)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    ;;
+	esac
+      ;;
+
+      tandem*)
+        case $cc_basename in
+          NCC*)
+	    # NonStop-UX NCC 3.20
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      vxworks*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      *)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+    esac
+
+    AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+    test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+    _LT_TAGVAR(GCC, $1)="$GXX"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  CC=$lt_save_CC
+  LDCXX=$LD
+  LD=$lt_save_LD
+  GCC=$lt_save_GCC
+  with_gnu_ld=$lt_save_with_gnu_ld
+  lt_cv_path_LDCXX=$lt_cv_path_LD
+  lt_cv_path_LD=$lt_save_path_LD
+  lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+  lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library.  It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+  Foo (void) { a = 0; }
+private:
+  int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer*4 a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+  private int a;
+  public void bar (void) {
+    a = 0;
+  }
+};
+_LT_EOF
+])
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+  # Parse the compiler output and extract the necessary
+  # objects, libraries and library flags.
+
+  # Sentinel used to keep track of whether or not we are before
+  # the conftest object file.
+  pre_test_object_deps_done=no
+
+  for p in `eval "$output_verbose_link_cmd"`; do
+    case $p in
+
+    -L* | -R* | -l*)
+       # Some compilers place space between "-{L,R}" and the path.
+       # Remove the space.
+       if test $p = "-L" ||
+          test $p = "-R"; then
+	 prev=$p
+	 continue
+       else
+	 prev=
+       fi
+
+       if test "$pre_test_object_deps_done" = no; then
+	 case $p in
+	 -L* | -R*)
+	   # Internal compiler library paths should come after those
+	   # provided the user.  The postdeps already come after the
+	   # user supplied libs so there is no need to process them.
+	   if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+	   else
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+	   fi
+	   ;;
+	 # The "-l" case would never come before the object being
+	 # linked, so don't bother handling this case.
+	 esac
+       else
+	 if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+	   _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+	 else
+	   _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+	 fi
+       fi
+       ;;
+
+    *.$objext)
+       # This assumes that the test object file only shows up
+       # once in the compiler output.
+       if test "$p" = "conftest.$objext"; then
+	 pre_test_object_deps_done=yes
+	 continue
+       fi
+
+       if test "$pre_test_object_deps_done" = no; then
+	 if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+	   _LT_TAGVAR(predep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+	 fi
+       else
+	 if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+	   _LT_TAGVAR(postdep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+	 fi
+       fi
+       ;;
+
+    *) ;; # Ignore the rest.
+
+    esac
+  done
+
+  # Clean up.
+  rm -f a.out a.exe
+else
+  echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+  # Interix 3.5 installs completely hosed .la files for C++, so rather than
+  # hack all around it, let's just trust "g++" to DTRT.
+  _LT_TAGVAR(predep_objects,$1)=
+  _LT_TAGVAR(postdep_objects,$1)=
+  _LT_TAGVAR(postdeps,$1)=
+  ;;
+
+linux*)
+  case `$CC -V 2>&1 | sed 5q` in
+  *Sun\ C*)
+    # Sun C++ 5.9
+
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+
+solaris*)
+  case $cc_basename in
+  CC*)
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    # Adding this requires a known-good setup of shared libraries for
+    # Sun compiler versions before 5.6, else PIC objects from an old
+    # archive will be linked into the output, leading to subtle bugs.
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+    [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+    [Dependencies to place before and after the objects being linked to
+    create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+    [The library search path used internally by the compiler when linking
+    a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_LANG_PUSH(Fortran 77)
+if test -z "$F77" || test "X$F77" = "Xno"; then
+  _lt_disable_F77=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  CC=${F77-"f77"}
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+  GCC=$G77
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$G77"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC="$lt_save_CC"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_LANG_PUSH(Fortran)
+
+if test -z "$FC" || test "X$FC" = "Xno"; then
+  _lt_disable_FC=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_flag_spec_ld, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  CC=${FC-"f95"}
+  compiler=$CC
+  GCC=$ac_cv_fc_compiler_gnu
+
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC="$lt_save_CC"
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+
+  _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC="$lt_save_CC"
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+  :
+  _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC="$lt_save_CC"
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+  [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+    [AC_CHECK_TOOL(GCJ, gcj,)
+      test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+      AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible.  Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+    [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+############################################################
+# NOTE: This macro has been submitted for inclusion into   #
+#  GNU Autoconf as AC_PROG_SED.  When it is available in   #
+#  a released version of Autoconf we should remove this    #
+#  macro and use it instead.                               #
+############################################################
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for lt_ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+        lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+      fi
+    done
+  done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+  test ! -f $lt_ac_sed && continue
+  cat /dev/null > conftest.in
+  lt_ac_count=0
+  echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+  # Check for GNU sed and select it if it is found.
+  if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+    lt_cv_path_SED=$lt_ac_sed
+    break
+  fi
+  while true; do
+    cat conftest.in conftest.in >conftest.tmp
+    mv conftest.tmp conftest.in
+    cp conftest.in conftest.nl
+    echo >>conftest.nl
+    $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+    cmp -s conftest.out conftest.nl || break
+    # 10000 chars as input seems more than enough
+    test $lt_ac_count -gt 10 && break
+    lt_ac_count=`expr $lt_ac_count + 1`
+    if test $lt_ac_count -gt $lt_ac_max; then
+      lt_ac_max=$lt_ac_count
+      lt_cv_path_SED=$lt_ac_sed
+    fi
+  done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_XSI_SHELLFNS
+# ---------------------
+# Bourne and XSI compatible variants of some useful shell functions.
+m4_defun([_LT_PROG_XSI_SHELLFNS],
+[case $xsi_shell in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result="${1##*/}"
+}
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+  case ${1} in
+    */*) func_dirname_result="${1%/*}${2}" ;;
+    *  ) func_dirname_result="${3}" ;;
+  esac
+  func_basename_result="${1##*/}"
+}
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+func_stripname ()
+{
+  # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+  # positional parameters, so assign one to ordinary parameter first.
+  func_stripname_result=${3}
+  func_stripname_result=${func_stripname_result#"${1}"}
+  func_stripname_result=${func_stripname_result%"${2}"}
+}
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=${1%%=*}
+  func_opt_split_arg=${1#*=}
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  case ${1} in
+    *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+    *)    func_lo2o_result=${1} ;;
+  esac
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=${1%.*}.lo
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=$(( $[*] ))
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=${#1}
+}
+
+_LT_EOF
+    ;;
+  *) # Bourne compatible functions.
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+  # Extract subdirectory from the argument.
+  func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+  if test "X$func_dirname_result" = "X${1}"; then
+    func_dirname_result="${3}"
+  else
+    func_dirname_result="$func_dirname_result${2}"
+  fi
+}
+
+# func_basename file
+func_basename ()
+{
+  func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+}
+
+dnl func_dirname_and_basename
+dnl A portable version of this function is already defined in general.m4sh
+dnl so there is no need for it here.
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+  case ${2} in
+    .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+    *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+  esac
+}
+
+# sed scripts:
+my_sed_long_opt='1s/^\(-[[^=]]*\)=.*/\1/;q'
+my_sed_long_arg='1s/^-[[^=]]*=//'
+
+# func_opt_split
+func_opt_split ()
+{
+  func_opt_split_opt=`$ECHO "${1}" | $SED "$my_sed_long_opt"`
+  func_opt_split_arg=`$ECHO "${1}" | $SED "$my_sed_long_arg"`
+}
+
+# func_lo2o object
+func_lo2o ()
+{
+  func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+}
+
+# func_xform libobj-or-source
+func_xform ()
+{
+  func_xform_result=`$ECHO "${1}" | $SED 's/\.[[^.]]*$/.lo/'`
+}
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+  func_arith_result=`expr "$[@]"`
+}
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+  func_len_result=`expr "$[1]" : ".*" 2>/dev/null || echo $max_cmd_len`
+}
+
+_LT_EOF
+esac
+
+case $lt_shell_append in
+  yes)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$[1]+=\$[2]"
+}
+_LT_EOF
+    ;;
+  *)
+    cat << \_LT_EOF >> "$cfgfile"
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+  eval "$[1]=\$$[1]\$[2]"
+}
+
+_LT_EOF
+    ;;
+  esac
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ltmain.sh b/fluent-bit/lib/libbacktrace-8602fda/ltmain.sh
new file mode 100644
index 000000000..70990740b
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ltmain.sh
@@ -0,0 +1,8636 @@
+# Generated from ltmain.m4sh.
+
+# libtool (GNU libtool 1.3134 2009-11-29) 2.2.7a
+# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
+# 2007, 2008, 2009 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions.  There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# GNU Libtool is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html,
+# or obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Usage: $progname [OPTION]... [MODE-ARG]...
+#
+# Provide generalized library-building support services.
+#
+#       --config             show all configuration variables
+#       --debug              enable verbose shell tracing
+#   -n, --dry-run            display commands without modifying any files
+#       --features           display basic configuration information and exit
+#       --mode=MODE          use operation mode MODE
+#       --no-finish          let install mode avoid finish commands
+#       --preserve-dup-deps  don't remove duplicate dependency libraries
+#       --quiet, --silent    don't print informational messages
+#       --no-quiet, --no-silent
+#                            print informational messages (default)
+#       --tag=TAG            use configuration variables from tag TAG
+#   -v, --verbose            print more informational messages than default
+#       --no-verbose         don't print the extra informational messages
+#       --version            print version information
+#   -h, --help, --help-all   print short, long, or detailed help message
+#
+# MODE must be one of the following:
+#
+#         clean              remove files from the build directory
+#         compile            compile a source file into a libtool object
+#         execute            automatically set library path, then run a program
+#         finish             complete the installation of libtool libraries
+#         install            install libraries or executables
+#         link               create a library or an executable
+#         uninstall          remove libraries from an installed directory
+#
+# MODE-ARGS vary depending on the MODE.  When passed as first option,
+# `--mode=MODE' may be abbreviated as `MODE' or a unique abbreviation of that.
+# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
+#
+# When reporting a bug, please describe a test case to reproduce it and
+# include the following information:
+#
+#         host-triplet:	$host
+#         shell:		$SHELL
+#         compiler:		$LTCC
+#         compiler flags:		$LTCFLAGS
+#         linker:		$LD (gnu? $with_gnu_ld)
+#         $progname:	(GNU libtool 1.3134 2009-11-29) 2.2.7a
+#         automake:	$automake_version
+#         autoconf:	$autoconf_version
+#
+# Report bugs to <bug-libtool@gnu.org>.
+
+PROGRAM=libtool
+PACKAGE=libtool
+VERSION=2.2.7a
+TIMESTAMP=" 1.3134 2009-11-29"
+package_revision=1.3134
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+$1
+_LTECHO_EOF'
+}
+
+# NLS nuisances: We save the old values to restore during execute mode.
+# Only set LANG and LC_ALL to C if already set.
+# These must not be set unconditionally because not all systems understand
+# e.g. LANG=C (notably SCO).
+lt_user_locale=
+lt_safe_locale=
+for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+do
+  eval "if test \"\${$lt_var+set}\" = set; then
+          save_$lt_var=\$$lt_var
+          $lt_var=C
+	  export $lt_var
+	  lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
+	  lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
+	fi"
+done
+
+$lt_unset CDPATH
+
+
+
+
+
+
+
+# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
+# is ksh but when the shell is invoked as "sh" and the current value of
+# the _XPG environment variable is not equal to 1 (one), the special
+# positional parameter $0, within a function call, is the name of the
+# function.
+progpath="$0"
+
+
+
+: ${CP="cp -f"}
+: ${ECHO=$as_echo}
+: ${EGREP="/bin/grep -E"}
+: ${FGREP="/bin/grep -F"}
+: ${GREP="/bin/grep"}
+: ${LN_S="ln -s"}
+: ${MAKE="make"}
+: ${MKDIR="mkdir"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+: ${SED="/mount/endor/wildenhu/local-x86_64/bin/sed"}
+: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
+: ${Xsed="$SED -e 1s/^X//"}
+
+# Global variables:
+EXIT_SUCCESS=0
+EXIT_FAILURE=1
+EXIT_MISMATCH=63  # $? = 63 is used to indicate version mismatch to missing.
+EXIT_SKIP=77	  # $? = 77 is used to indicate a skipped test to automake.
+
+exit_status=$EXIT_SUCCESS
+
+# Make sure IFS has a sensible default
+lt_nl='
+'
+IFS=" 	$lt_nl"
+
+dirname="s,/[^/]*$,,"
+basename="s,^.*/,,"
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+  # Extract subdirectory from the argument.
+  func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
+  if test "X$func_dirname_result" = "X${1}"; then
+    func_dirname_result="${3}"
+  else
+    func_dirname_result="$func_dirname_result${2}"
+  fi
+  func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
+}
+
+# Generated shell functions inserted here.
+
+# These SED scripts presuppose an absolute path with a trailing slash.
+pathcar='s,^/\([^/]*\).*$,\1,'
+pathcdr='s,^/[^/]*,,'
+removedotparts=':dotsl
+		s@/\./@/@g
+		t dotsl
+		s,/\.$,/,'
+collapseslashes='s@/\{1,\}@/@g'
+finalslash='s,/*$,/,'
+
+# func_normal_abspath PATH
+# Remove doubled-up and trailing slashes, "." path components,
+# and cancel out any ".." path components in PATH after making
+# it an absolute path.
+#             value returned in "$func_normal_abspath_result"
+func_normal_abspath ()
+{
+  # Start from root dir and reassemble the path.
+  func_normal_abspath_result=
+  func_normal_abspath_tpath=$1
+  func_normal_abspath_altnamespace=
+  case $func_normal_abspath_tpath in
+    "")
+      # Empty path, that just means $cwd.
+      func_stripname '' '/' "`pwd`"
+      func_normal_abspath_result=$func_stripname_result
+      return
+    ;;
+    # The next three entries are used to spot a run of precisely
+    # two leading slashes without using negated character classes;
+    # we take advantage of case's first-match behaviour.
+    ///*)
+      # Unusual form of absolute path, do nothing.
+    ;;
+    //*)
+      # Not necessarily an ordinary path; POSIX reserves leading '//'
+      # and for example Cygwin uses it to access remote file shares
+      # over CIFS/SMB, so we conserve a leading double slash if found.
+      func_normal_abspath_altnamespace=/
+    ;;
+    /*)
+      # Absolute path, do nothing.
+    ;;
+    *)
+      # Relative path, prepend $cwd.
+      func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath
+    ;;
+  esac
+  # Cancel out all the simple stuff to save iterations.  We also want
+  # the path to end with a slash for ease of parsing, so make sure
+  # there is one (and only one) here.
+  func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$removedotparts" -e "$collapseslashes" -e "$finalslash"`
+  while :; do
+    # Processed it all yet?
+    if test "$func_normal_abspath_tpath" = / ; then
+      # If we ascended to the root using ".." the result may be empty now.
+      if test -z "$func_normal_abspath_result" ; then
+        func_normal_abspath_result=/
+      fi
+      break
+    fi
+    func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$pathcar"`
+    func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$pathcdr"`
+    # Figure out what to do with it
+    case $func_normal_abspath_tcomponent in
+      "")
+        # Trailing empty path component, ignore it.
+      ;;
+      ..)
+        # Parent dir; strip last assembled component from result.
+        func_dirname "$func_normal_abspath_result"
+        func_normal_abspath_result=$func_dirname_result
+      ;;
+      *)
+        # Actual path component, append it.
+        func_normal_abspath_result=$func_normal_abspath_result/$func_normal_abspath_tcomponent
+      ;;
+    esac
+  done
+  # Restore leading double-slash if one was found on entry.
+  func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result
+}
+
+# func_relative_path SRCDIR DSTDIR
+# generates a relative path from SRCDIR to DSTDIR, with a trailing
+# slash if non-empty, suitable for immediately appending a filename
+# without needing to append a separator.
+#             value returned in "$func_relative_path_result"
+func_relative_path ()
+{
+  func_relative_path_result=
+  func_normal_abspath "$1"
+  func_relative_path_tlibdir=$func_normal_abspath_result
+  func_normal_abspath "$2"
+  func_relative_path_tbindir=$func_normal_abspath_result
+
+  # Ascend the tree starting from libdir
+  while :; do
+    # check if we have found a prefix of bindir
+    case $func_relative_path_tbindir in
+      $func_relative_path_tlibdir)
+        # found an exact match
+        func_relative_path_tcancelled=
+        break
+        ;;
+      $func_relative_path_tlibdir*)
+        # found a matching prefix
+        func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir"
+        func_relative_path_tcancelled=$func_stripname_result
+        if test -z "$func_relative_path_result"; then
+          func_relative_path_result=.
+        fi
+        break
+        ;;
+      *)
+        func_dirname $func_relative_path_tlibdir
+        func_relative_path_tlibdir=${func_dirname_result}
+        if test "x$func_relative_path_tlibdir" = x ; then
+          # Have to descend all the way to the root!
+          func_relative_path_result=../$func_relative_path_result
+          func_relative_path_tcancelled=$func_relative_path_tbindir
+          break
+        fi
+        func_relative_path_result=../$func_relative_path_result
+        ;;
+    esac
+  done
+
+  # Now calculate path; take care to avoid doubling-up slashes.
+  func_stripname '' '/' "$func_relative_path_result"
+  func_relative_path_result=$func_stripname_result
+  func_stripname '/' '/' "$func_relative_path_tcancelled"
+  if test "x$func_stripname_result" != x ; then
+    func_relative_path_result=${func_relative_path_result}/${func_stripname_result}
+  fi
+
+  # Normalisation. If bindir is libdir, return empty string,
+  # else relative path ending with a slash; either way, target
+  # file name can be directly appended.
+  if test ! -z "$func_relative_path_result"; then
+    func_stripname './' '' "$func_relative_path_result/"
+    func_relative_path_result=$func_stripname_result
+  fi
+}
+
+# The name of this program:
+func_dirname_and_basename "$progpath"
+progname=$func_basename_result
+
+# Make sure we have an absolute path for reexecution:
+case $progpath in
+  [\\/]*|[A-Za-z]:\\*) ;;
+  *[\\/]*)
+     progdir=$func_dirname_result
+     progdir=`cd "$progdir" && pwd`
+     progpath="$progdir/$progname"
+     ;;
+  *)
+     save_IFS="$IFS"
+     IFS=:
+     for progdir in $PATH; do
+       IFS="$save_IFS"
+       test -x "$progdir/$progname" && break
+     done
+     IFS="$save_IFS"
+     test -n "$progdir" || progdir=`pwd`
+     progpath="$progdir/$progname"
+     ;;
+esac
+
+# Sed substitution that helps us do robust quoting.  It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed="${SED}"' -e 1s/^X//'
+sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Re-`\' parameter expansions in output of double_quote_subst that were
+# `\'-ed in input to the same.  If an odd number of `\' preceded a '$'
+# in input to double_quote_subst, that '$' was protected from expansion.
+# Since each input `\' is now two `\'s, look for any number of runs of
+# four `\'s followed by two `\'s and then a '$'.  `\' that '$'.
+bs='\\'
+bs2='\\\\'
+bs4='\\\\\\\\'
+dollar='\$'
+sed_double_backslash="\
+  s/$bs4/&\\
+/g
+  s/^$bs2$dollar/$bs&/
+  s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
+  s/\n//g"
+
+# Standard options:
+opt_dry_run=false
+opt_help=false
+opt_quiet=false
+opt_verbose=false
+opt_warning=:
+
+# func_echo arg...
+# Echo program name prefixed message, along with the current mode
+# name if it has been set yet.
+func_echo ()
+{
+    $ECHO "$progname${mode+: }$mode: $*"
+}
+
+# func_verbose arg...
+# Echo program name prefixed message in verbose mode only.
+func_verbose ()
+{
+    $opt_verbose && func_echo ${1+"$@"}
+
+    # A bug in bash halts the script if the last line of a function
+    # fails when set -e is in force, so we need another command to
+    # work around that:
+    :
+}
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO "$*"
+}
+
+# func_error arg...
+# Echo program name prefixed message to standard error.
+func_error ()
+{
+    $ECHO "$progname${mode+: }$mode: "${1+"$@"} 1>&2
+}
+
+# func_warning arg...
+# Echo program name prefixed warning message to standard error.
+func_warning ()
+{
+    $opt_warning && $ECHO "$progname${mode+: }$mode: warning: "${1+"$@"} 1>&2
+
+    # bash bug again:
+    :
+}
+
+# func_fatal_error arg...
+# Echo program name prefixed message to standard error, and exit.
+func_fatal_error ()
+{
+    func_error ${1+"$@"}
+    exit $EXIT_FAILURE
+}
+
+# func_fatal_help arg...
+# Echo program name prefixed message to standard error, followed by
+# a help hint, and exit.
+func_fatal_help ()
+{
+    func_error ${1+"$@"}
+    func_fatal_error "$help"
+}
+help="Try \`$progname --help' for more information."  ## default
+
+
+# func_grep expression filename
+# Check whether EXPRESSION matches any line of FILENAME, without output.
+func_grep ()
+{
+    $GREP "$1" "$2" >/dev/null 2>&1
+}
+
+
+# func_mkdir_p directory-path
+# Make sure the entire path to DIRECTORY-PATH is available.
+func_mkdir_p ()
+{
+    my_directory_path="$1"
+    my_dir_list=
+
+    if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then
+
+      # Protect directory names starting with `-'
+      case $my_directory_path in
+        -*) my_directory_path="./$my_directory_path" ;;
+      esac
+
+      # While some portion of DIR does not yet exist...
+      while test ! -d "$my_directory_path"; do
+        # ...make a list in topmost first order.  Use a colon delimited
+	# list incase some portion of path contains whitespace.
+        my_dir_list="$my_directory_path:$my_dir_list"
+
+        # If the last portion added has no slash in it, the list is done
+        case $my_directory_path in */*) ;; *) break ;; esac
+
+        # ...otherwise throw away the child directory and loop
+        my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"`
+      done
+      my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'`
+
+      save_mkdir_p_IFS="$IFS"; IFS=':'
+      for my_dir in $my_dir_list; do
+	IFS="$save_mkdir_p_IFS"
+        # mkdir can fail with a `File exist' error if two processes
+        # try to create one of the directories concurrently.  Don't
+        # stop in that case!
+        $MKDIR "$my_dir" 2>/dev/null || :
+      done
+      IFS="$save_mkdir_p_IFS"
+
+      # Bail out if we (or some other process) failed to create a directory.
+      test -d "$my_directory_path" || \
+        func_fatal_error "Failed to create \`$1'"
+    fi
+}
+
+
+# func_mktempdir [string]
+# Make a temporary directory that won't clash with other running
+# libtool processes, and avoids race conditions if possible.  If
+# given, STRING is the basename for that directory.
+func_mktempdir ()
+{
+    my_template="${TMPDIR-/tmp}/${1-$progname}"
+
+    if test "$opt_dry_run" = ":"; then
+      # Return a directory name, but don't create it in dry-run mode
+      my_tmpdir="${my_template}-$$"
+    else
+
+      # If mktemp works, use that first and foremost
+      my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`
+
+      if test ! -d "$my_tmpdir"; then
+        # Failing that, at least try and use $RANDOM to avoid a race
+        my_tmpdir="${my_template}-${RANDOM-0}$$"
+
+        save_mktempdir_umask=`umask`
+        umask 0077
+        $MKDIR "$my_tmpdir"
+        umask $save_mktempdir_umask
+      fi
+
+      # If we're not in dry-run mode, bomb out on failure
+      test -d "$my_tmpdir" || \
+        func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
+    fi
+
+    $ECHO "$my_tmpdir"
+}
+
+
+# func_quote_for_eval arg
+# Aesthetically quote ARG to be evaled later.
+# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
+# is double-quoted, suitable for a subsequent eval, whereas
+# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
+# which are still active within double quotes backslashified.
+func_quote_for_eval ()
+{
+    case $1 in
+      *[\\\`\"\$]*)
+	func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;;
+      *)
+        func_quote_for_eval_unquoted_result="$1" ;;
+    esac
+
+    case $func_quote_for_eval_unquoted_result in
+      # Double-quote args containing shell metacharacters to delay
+      # word splitting, command substitution and and variable
+      # expansion for a subsequent eval.
+      # Many Bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
+        ;;
+      *)
+        func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
+    esac
+}
+
+
+# func_quote_for_expand arg
+# Aesthetically quote ARG to be evaled later; same as above,
+# but do not quote variable references.
+func_quote_for_expand ()
+{
+    case $1 in
+      *[\\\`\"]*)
+	my_arg=`$ECHO "$1" | $SED \
+	    -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
+      *)
+        my_arg="$1" ;;
+    esac
+
+    case $my_arg in
+      # Double-quote args containing shell metacharacters to delay
+      # word splitting and command substitution for a subsequent eval.
+      # Many Bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        my_arg="\"$my_arg\""
+        ;;
+    esac
+
+    func_quote_for_expand_result="$my_arg"
+}
+
+
+# func_show_eval cmd [fail_exp]
+# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
+# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.
+func_show_eval ()
+{
+    my_cmd="$1"
+    my_fail_exp="${2-:}"
+
+    ${opt_silent-false} || {
+      func_quote_for_expand "$my_cmd"
+      eval "func_echo $func_quote_for_expand_result"
+    }
+
+    if ${opt_dry_run-false}; then :; else
+      eval "$my_cmd"
+      my_status=$?
+      if test "$my_status" -eq 0; then :; else
+	eval "(exit $my_status); $my_fail_exp"
+      fi
+    fi
+}
+
+
+# func_show_eval_locale cmd [fail_exp]
+# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
+# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.  Use the saved locale for evaluation.
+func_show_eval_locale ()
+{
+    my_cmd="$1"
+    my_fail_exp="${2-:}"
+
+    ${opt_silent-false} || {
+      func_quote_for_expand "$my_cmd"
+      eval "func_echo $func_quote_for_expand_result"
+    }
+
+    if ${opt_dry_run-false}; then :; else
+      eval "$lt_user_locale
+	    $my_cmd"
+      my_status=$?
+      eval "$lt_safe_locale"
+      if test "$my_status" -eq 0; then :; else
+	eval "(exit $my_status); $my_fail_exp"
+      fi
+    fi
+}
+
+
+
+
+
+# func_version
+# Echo version message to standard output and exit.
+func_version ()
+{
+    $SED -n '/(C)/!b go
+	:more
+	/\./!{
+	  N
+	  s/\n# //
+	  b more
+	}
+	:go
+	/^# '$PROGRAM' (GNU /,/# warranty; / {
+        s/^# //
+	s/^# *$//
+        s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
+        p
+     }' < "$progpath"
+     exit $?
+}
+
+# func_usage
+# Echo short help message to standard output and exit.
+func_usage ()
+{
+    $SED -n '/^# Usage:/,/^#  *-h/ {
+        s/^# //
+	s/^# *$//
+	s/\$progname/'$progname'/
+	p
+    }' < "$progpath"
+    echo
+    $ECHO "run \`$progname --help | more' for full usage"
+    exit $?
+}
+
+# func_help [NOEXIT]
+# Echo long help message to standard output and exit,
+# unless 'noexit' is passed as argument.
+func_help ()
+{
+    $SED -n '/^# Usage:/,/# Report bugs to/ {
+        s/^# //
+	s/^# *$//
+	s*\$progname*'$progname'*
+	s*\$host*'"$host"'*
+	s*\$SHELL*'"$SHELL"'*
+	s*\$LTCC*'"$LTCC"'*
+	s*\$LTCFLAGS*'"$LTCFLAGS"'*
+	s*\$LD*'"$LD"'*
+	s/\$with_gnu_ld/'"$with_gnu_ld"'/
+	s/\$automake_version/'"`(automake --version) 2>/dev/null |$SED 1q`"'/
+	s/\$autoconf_version/'"`(autoconf --version) 2>/dev/null |$SED 1q`"'/
+	p
+     }' < "$progpath"
+    ret=$?
+    if test -z "$1"; then
+      exit $ret
+    fi
+}
+
+# func_missing_arg argname
+# Echo program name prefixed message to standard error and set global
+# exit_cmd.
+func_missing_arg ()
+{
+    func_error "missing argument for $1"
+    exit_cmd=exit
+}
+
+exit_cmd=:
+
+
+
+
+
+
+magic="%%%MAGIC variable%%%"
+magic_exe="%%%MAGIC EXE variable%%%"
+
+# Global variables.
+# $mode is unset
+nonopt=
+execute_dlfiles=
+preserve_args=
+lo2o="s/\\.lo\$/.${objext}/"
+o2lo="s/\\.${objext}\$/.lo/"
+extracted_archives=
+extracted_serial=0
+
+opt_dry_run=false
+opt_finish=:
+opt_duplicate_deps=false
+opt_silent=false
+opt_debug=:
+
+# If this variable is set in any of the actions, the command in it
+# will be execed at the end.  This prevents here-documents from being
+# left over by shells.
+exec_cmd=
+
+# func_fatal_configuration arg...
+# Echo program name prefixed message to standard error, followed by
+# a configuration failure hint, and exit.
+func_fatal_configuration ()
+{
+    func_error ${1+"$@"}
+    func_error "See the $PACKAGE documentation for more information."
+    func_fatal_error "Fatal configuration error."
+}
+
+
+# func_config
+# Display the configuration for all the tags in this script.
+func_config ()
+{
+    re_begincf='^# ### BEGIN LIBTOOL'
+    re_endcf='^# ### END LIBTOOL'
+
+    # Default configuration.
+    $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"
+
+    # Now print the configurations for the tags.
+    for tagname in $taglist; do
+      $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
+    done
+
+    exit $?
+}
+
+# func_features
+# Display the features supported by this script.
+func_features ()
+{
+    echo "host: $host"
+    if test "$build_libtool_libs" = yes; then
+      echo "enable shared libraries"
+    else
+      echo "disable shared libraries"
+    fi
+    if test "$build_old_libs" = yes; then
+      echo "enable static libraries"
+    else
+      echo "disable static libraries"
+    fi
+
+    exit $?
+}
+
+# func_enable_tag tagname
+# Verify that TAGNAME is valid, and either flag an error and exit, or
+# enable the TAGNAME tag.  We also add TAGNAME to the global $taglist
+# variable here.
+func_enable_tag ()
+{
+  # Global variable:
+  tagname="$1"
+
+  re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
+  re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
+  sed_extractcf="/$re_begincf/,/$re_endcf/p"
+
+  # Validate tagname.
+  case $tagname in
+    *[!-_A-Za-z0-9,/]*)
+      func_fatal_error "invalid tag name: $tagname"
+      ;;
+  esac
+
+  # Don't test for the "default" C tag, as we know it's
+  # there but not specially marked.
+  case $tagname in
+    CC) ;;
+    *)
+      if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
+	taglist="$taglist $tagname"
+
+	# Evaluate the configuration.  Be careful to quote the path
+	# and the sed script, to avoid splitting on whitespace, but
+	# also don't use non-portable quotes within backquotes within
+	# quotes we have to do it in 2 steps:
+	extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
+	eval "$extractedcf"
+      else
+	func_error "ignoring unknown tag $tagname"
+      fi
+      ;;
+  esac
+}
+
+# Parse options once, thoroughly.  This comes as soon as possible in
+# the script to make things like `libtool --version' happen quickly.
+{
+
+  # Shorthand for --mode=foo, only valid as the first argument
+  case $1 in
+  clean|clea|cle|cl)
+    shift; set dummy --mode clean ${1+"$@"}; shift
+    ;;
+  compile|compil|compi|comp|com|co|c)
+    shift; set dummy --mode compile ${1+"$@"}; shift
+    ;;
+  execute|execut|execu|exec|exe|ex|e)
+    shift; set dummy --mode execute ${1+"$@"}; shift
+    ;;
+  finish|finis|fini|fin|fi|f)
+    shift; set dummy --mode finish ${1+"$@"}; shift
+    ;;
+  install|instal|insta|inst|ins|in|i)
+    shift; set dummy --mode install ${1+"$@"}; shift
+    ;;
+  link|lin|li|l)
+    shift; set dummy --mode link ${1+"$@"}; shift
+    ;;
+  uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
+    shift; set dummy --mode uninstall ${1+"$@"}; shift
+    ;;
+  esac
+
+  # Parse non-mode specific arguments:
+  while test "$#" -gt 0; do
+    opt="$1"
+    shift
+
+    case $opt in
+      --config)		func_config					;;
+
+      --debug)		preserve_args="$preserve_args $opt"
+			func_echo "enabling shell trace mode"
+			opt_debug='set -x'
+			$opt_debug
+			;;
+
+      -dlopen)		test "$#" -eq 0 && func_missing_arg "$opt" && break
+			execute_dlfiles="$execute_dlfiles $1"
+			shift
+			;;
+
+      --dry-run | -n)	opt_dry_run=:					;;
+      --features)       func_features					;;
+      --finish)		mode="finish"					;;
+      --no-finish)	opt_finish=false				;;
+
+      --mode)		test "$#" -eq 0 && func_missing_arg "$opt" && break
+			case $1 in
+			  # Valid mode arguments:
+			  clean)	;;
+			  compile)	;;
+			  execute)	;;
+			  finish)	;;
+			  install)	;;
+			  link)		;;
+			  relink)	;;
+			  uninstall)	;;
+
+			  # Catch anything else as an error
+			  *) func_error "invalid argument for $opt"
+			     exit_cmd=exit
+			     break
+			     ;;
+		        esac
+
+			mode="$1"
+			shift
+			;;
+
+      --preserve-dup-deps)
+			opt_duplicate_deps=:				;;
+
+      --quiet|--silent)	preserve_args="$preserve_args $opt"
+			opt_silent=:
+			opt_verbose=false
+			;;
+
+      --no-quiet|--no-silent)
+			preserve_args="$preserve_args $opt"
+			opt_silent=false
+			;;
+
+      --verbose| -v)	preserve_args="$preserve_args $opt"
+			opt_silent=false
+			opt_verbose=:
+			;;
+
+      --no-verbose)	preserve_args="$preserve_args $opt"
+			opt_verbose=false
+			;;
+
+      --tag)		test "$#" -eq 0 && func_missing_arg "$opt" && break
+			preserve_args="$preserve_args $opt $1"
+			func_enable_tag "$1"	# tagname is set here
+			shift
+			;;
+
+      # Separate optargs to long options:
+      -dlopen=*|--mode=*|--tag=*)
+			func_opt_split "$opt"
+			set dummy "$func_opt_split_opt" "$func_opt_split_arg" ${1+"$@"}
+			shift
+			;;
+
+      -\?|-h)		func_usage					;;
+      --help)		opt_help=:					;;
+      --help-all)	opt_help=': help-all'				;;
+      --version)	func_version					;;
+
+      -*)		func_fatal_help "unrecognized option \`$opt'"	;;
+
+      *)		nonopt="$opt"
+			break
+			;;
+    esac
+  done
+
+
+  case $host in
+    *cygwin* | *mingw* | *pw32* | *cegcc* | *solaris2* )
+      # don't eliminate duplications in $postdeps and $predeps
+      opt_duplicate_compiler_generated_deps=:
+      ;;
+    *)
+      opt_duplicate_compiler_generated_deps=$opt_duplicate_deps
+      ;;
+  esac
+
+  # Having warned about all mis-specified options, bail out if
+  # anything was wrong.
+  $exit_cmd $EXIT_FAILURE
+}
+
+# func_check_version_match
+# Ensure that we are using m4 macros, and libtool script from the same
+# release of libtool.
+func_check_version_match ()
+{
+  if test "$package_revision" != "$macro_revision"; then
+    if test "$VERSION" != "$macro_version"; then
+      if test -z "$macro_version"; then
+        cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from an older release.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+      else
+        cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+      fi
+    else
+      cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, revision $package_revision,
+$progname: but the definition of this LT_INIT comes from revision $macro_revision.
+$progname: You should recreate aclocal.m4 with macros from revision $package_revision
+$progname: of $PACKAGE $VERSION and run autoconf again.
+_LT_EOF
+    fi
+
+    exit $EXIT_MISMATCH
+  fi
+}
+
+
+## ----------- ##
+##    Main.    ##
+## ----------- ##
+
+$opt_help || {
+  # Sanity checks first:
+  func_check_version_match
+
+  if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
+    func_fatal_configuration "not configured to build any kind of library"
+  fi
+
+  test -z "$mode" && func_fatal_error "error: you must specify a MODE."
+
+
+  # Darwin sucks
+  eval "std_shrext=\"$shrext_cmds\""
+
+
+  # Only execute mode is allowed to have -dlopen flags.
+  if test -n "$execute_dlfiles" && test "$mode" != execute; then
+    func_error "unrecognized option \`-dlopen'"
+    $ECHO "$help" 1>&2
+    exit $EXIT_FAILURE
+  fi
+
+  # Change the help message to a mode-specific one.
+  generic_help="$help"
+  help="Try \`$progname --help --mode=$mode' for more information."
+}
+
+
+# func_lalib_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_lalib_p ()
+{
+    test -f "$1" &&
+      $SED -e 4q "$1" 2>/dev/null \
+        | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
+}
+
+# func_lalib_unsafe_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function implements the same check as func_lalib_p without
+# resorting to external programs.  To this end, it redirects stdin and
+# closes it afterwards, without saving the original file descriptor.
+# As a safety measure, use it only where a negative result would be
+# fatal anyway.  Works if `file' does not exist.
+func_lalib_unsafe_p ()
+{
+    lalib_p=no
+    if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
+	for lalib_p_l in 1 2 3 4
+	do
+	    read lalib_p_line
+	    case "$lalib_p_line" in
+		\#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
+	    esac
+	done
+	exec 0<&5 5<&-
+    fi
+    test "$lalib_p" = yes
+}
+
+# func_ltwrapper_script_p file
+# True iff FILE is a libtool wrapper script
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_script_p ()
+{
+    func_lalib_p "$1"
+}
+
+# func_ltwrapper_executable_p file
+# True iff FILE is a libtool wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_executable_p ()
+{
+    func_ltwrapper_exec_suffix=
+    case $1 in
+    *.exe) ;;
+    *) func_ltwrapper_exec_suffix=.exe ;;
+    esac
+    $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
+}
+
+# func_ltwrapper_scriptname file
+# Assumes file is an ltwrapper_executable
+# uses $file to determine the appropriate filename for a
+# temporary ltwrapper_script.
+func_ltwrapper_scriptname ()
+{
+    func_ltwrapper_scriptname_result=""
+    if func_ltwrapper_executable_p "$1"; then
+	func_dirname_and_basename "$1" "" "."
+	func_stripname '' '.exe' "$func_basename_result"
+	func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
+    fi
+}
+
+# func_ltwrapper_p file
+# True iff FILE is a libtool wrapper script or wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_p ()
+{
+    func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
+}
+
+
+# func_execute_cmds commands fail_cmd
+# Execute tilde-delimited COMMANDS.
+# If FAIL_CMD is given, eval that upon failure.
+# FAIL_CMD may read-access the current command in variable CMD!
+func_execute_cmds ()
+{
+    $opt_debug
+    save_ifs=$IFS; IFS='~'
+    for cmd in $1; do
+      IFS=$save_ifs
+      eval "cmd=\"$cmd\""
+      func_show_eval "$cmd" "${2-:}"
+    done
+    IFS=$save_ifs
+}
+
+
+# func_source file
+# Source FILE, adding directory component if necessary.
+# Note that it is not necessary on cygwin/mingw to append a dot to
+# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
+# behavior happens only for exec(3), not for open(2)!  Also, sourcing
+# `FILE.' does not work on cygwin managed mounts.
+func_source ()
+{
+    $opt_debug
+    case $1 in
+    */* | *\\*)	. "$1" ;;
+    *)		. "./$1" ;;
+    esac
+}
+
+
+# func_infer_tag arg
+# Infer tagged configuration to use if any are available and
+# if one wasn't chosen via the "--tag" command line option.
+# Only attempt this if the compiler in the base compile
+# command doesn't match the default compiler.
+# arg is usually of the form 'gcc ...'
+func_infer_tag ()
+{
+    $opt_debug
+    if test -n "$available_tags" && test -z "$tagname"; then
+      CC_quoted=
+      for arg in $CC; do
+        func_quote_for_eval "$arg"
+	CC_quoted="$CC_quoted $func_quote_for_eval_result"
+      done
+      CC_expanded=`func_echo_all $CC`
+      CC_quoted_expanded=`func_echo_all $CC_quoted`
+      case $@ in
+      # Blanks in the command may have been stripped by the calling shell,
+      # but not from the CC environment variable when configure was run.
+      " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
+      " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;;
+      # Blanks at the start of $base_compile will cause this to fail
+      # if we don't check for them as well.
+      *)
+	for z in $available_tags; do
+	  if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
+	    # Evaluate the configuration.
+	    eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
+	    CC_quoted=
+	    for arg in $CC; do
+	      # Double-quote args containing other shell metacharacters.
+	      func_quote_for_eval "$arg"
+	      CC_quoted="$CC_quoted $func_quote_for_eval_result"
+	    done
+	    CC_expanded=`func_echo_all $CC`
+	    CC_quoted_expanded=`func_echo_all $CC_quoted`
+	    case "$@ " in
+	    " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
+	    " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*)
+	      # The compiler in the base compile command matches
+	      # the one in the tagged configuration.
+	      # Assume this is the tagged configuration we want.
+	      tagname=$z
+	      break
+	      ;;
+	    esac
+	  fi
+	done
+	# If $tagname still isn't set, then no tagged configuration
+	# was found and let the user know that the "--tag" command
+	# line option must be used.
+	if test -z "$tagname"; then
+	  func_echo "unable to infer tagged configuration"
+	  func_fatal_error "specify a tag with \`--tag'"
+#	else
+#	  func_verbose "using $tagname tagged configuration"
+	fi
+	;;
+      esac
+    fi
+}
+
+
+
+# func_write_libtool_object output_name pic_name nonpic_name
+# Create a libtool object file (analogous to a ".la" file),
+# but don't create it if we're doing a dry run.
+func_write_libtool_object ()
+{
+    write_libobj=${1}
+    if test "$build_libtool_libs" = yes; then
+      write_lobj=\'${2}\'
+    else
+      write_lobj=none
+    fi
+
+    if test "$build_old_libs" = yes; then
+      write_oldobj=\'${3}\'
+    else
+      write_oldobj=none
+    fi
+
+    $opt_dry_run || {
+      cat >${write_libobj}T <<EOF
+# $write_libobj - a libtool object file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object=$write_lobj
+
+# Name of the non-PIC object
+non_pic_object=$write_oldobj
+
+EOF
+      $MV "${write_libobj}T" "${write_libobj}"
+    }
+}
+
+# func_mode_compile arg...
+func_mode_compile ()
+{
+    $opt_debug
+    # Get the compilation command and the source file.
+    base_compile=
+    srcfile="$nonopt"  #  always keep a non-empty value in "srcfile"
+    suppress_opt=yes
+    suppress_output=
+    arg_mode=normal
+    libobj=
+    later=
+    pie_flag=
+
+    for arg
+    do
+      case $arg_mode in
+      arg  )
+	# do not "continue".  Instead, add this to base_compile
+	lastarg="$arg"
+	arg_mode=normal
+	;;
+
+      target )
+	libobj="$arg"
+	arg_mode=normal
+	continue
+	;;
+
+      normal )
+	# Accept any command-line options.
+	case $arg in
+	-o)
+	  test -n "$libobj" && \
+	    func_fatal_error "you cannot specify \`-o' more than once"
+	  arg_mode=target
+	  continue
+	  ;;
+
+	-pie | -fpie | -fPIE)
+          pie_flag="$pie_flag $arg"
+	  continue
+	  ;;
+
+	-shared | -static | -prefer-pic | -prefer-non-pic)
+	  later="$later $arg"
+	  continue
+	  ;;
+
+	-no-suppress)
+	  suppress_opt=no
+	  continue
+	  ;;
+
+	-Xcompiler)
+	  arg_mode=arg  #  the next one goes into the "base_compile" arg list
+	  continue      #  The current "srcfile" will either be retained or
+	  ;;            #  replaced later.  I would guess that would be a bug.
+
+	-Wc,*)
+	  func_stripname '-Wc,' '' "$arg"
+	  args=$func_stripname_result
+	  lastarg=
+	  save_ifs="$IFS"; IFS=','
+	  for arg in $args; do
+	    IFS="$save_ifs"
+	    func_quote_for_eval "$arg"
+	    lastarg="$lastarg $func_quote_for_eval_result"
+	  done
+	  IFS="$save_ifs"
+	  func_stripname ' ' '' "$lastarg"
+	  lastarg=$func_stripname_result
+
+	  # Add the arguments to base_compile.
+	  base_compile="$base_compile $lastarg"
+	  continue
+	  ;;
+
+	*)
+	  # Accept the current argument as the source file.
+	  # The previous "srcfile" becomes the current argument.
+	  #
+	  lastarg="$srcfile"
+	  srcfile="$arg"
+	  ;;
+	esac  #  case $arg
+	;;
+      esac    #  case $arg_mode
+
+      # Aesthetically quote the previous argument.
+      func_quote_for_eval "$lastarg"
+      base_compile="$base_compile $func_quote_for_eval_result"
+    done # for arg
+
+    case $arg_mode in
+    arg)
+      func_fatal_error "you must specify an argument for -Xcompile"
+      ;;
+    target)
+      func_fatal_error "you must specify a target with \`-o'"
+      ;;
+    *)
+      # Get the name of the library object.
+      test -z "$libobj" && {
+	func_basename "$srcfile"
+	libobj="$func_basename_result"
+      }
+      ;;
+    esac
+
+    # Recognize several different file suffixes.
+    # If the user specifies -o file.o, it is replaced with file.lo
+    case $libobj in
+    *.[cCFSifmso] | \
+    *.ada | *.adb | *.ads | *.asm | \
+    *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
+    *.[fF][09]? | *.for | *.java | *.obj | *.sx | *.cu | *.cup)
+      func_xform "$libobj"
+      libobj=$func_xform_result
+      ;;
+    esac
+
+    case $libobj in
+    *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
+    *)
+      func_fatal_error "cannot determine name of library object from \`$libobj'"
+      ;;
+    esac
+
+    func_infer_tag $base_compile
+
+    for arg in $later; do
+      case $arg in
+      -shared)
+	test "$build_libtool_libs" != yes && \
+	  func_fatal_configuration "can not build a shared library"
+	build_old_libs=no
+	continue
+	;;
+
+      -static)
+	build_libtool_libs=no
+	build_old_libs=yes
+	continue
+	;;
+
+      -prefer-pic)
+	pic_mode=yes
+	continue
+	;;
+
+      -prefer-non-pic)
+	pic_mode=no
+	continue
+	;;
+      esac
+    done
+
+    func_quote_for_eval "$libobj"
+    test "X$libobj" != "X$func_quote_for_eval_result" \
+      && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"'	 &()|`$[]' \
+      && func_warning "libobj name \`$libobj' may not contain shell special characters."
+    func_dirname_and_basename "$obj" "/" ""
+    objname="$func_basename_result"
+    xdir="$func_dirname_result"
+    lobj=${xdir}$objdir/$objname
+
+    test -z "$base_compile" && \
+      func_fatal_help "you must specify a compilation command"
+
+    # Delete any leftover library objects.
+    if test "$build_old_libs" = yes; then
+      removelist="$obj $lobj $libobj ${libobj}T"
+    else
+      removelist="$lobj $libobj ${libobj}T"
+    fi
+
+    # On Cygwin there's no "real" PIC flag so we must build both object types
+    case $host_os in
+    cygwin* | mingw* | pw32* | os2* | cegcc*)
+      pic_mode=default
+      ;;
+    esac
+    if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
+      # non-PIC code in shared libraries is not supported
+      pic_mode=default
+    fi
+
+    # Calculate the filename of the output object if compiler does
+    # not support -o with -c
+    if test "$compiler_c_o" = no; then
+      output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.${objext}
+      lockfile="$output_obj.lock"
+    else
+      output_obj=
+      need_locks=no
+      lockfile=
+    fi
+
+    # Lock this critical section if it is needed
+    # We use this script file to make the link, it avoids creating a new file
+    if test "$need_locks" = yes; then
+      until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+	func_echo "Waiting for $lockfile to be removed"
+	sleep 2
+      done
+    elif test "$need_locks" = warn; then
+      if test -f "$lockfile"; then
+	$ECHO "\
+*** ERROR, $lockfile exists and contains:
+`cat $lockfile 2>/dev/null`
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+      removelist="$removelist $output_obj"
+      $ECHO "$srcfile" > "$lockfile"
+    fi
+
+    $opt_dry_run || $RM $removelist
+    removelist="$removelist $lockfile"
+    trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
+
+    if test -n "$fix_srcfile_path"; then
+      eval "srcfile=\"$fix_srcfile_path\""
+    fi
+    func_quote_for_eval "$srcfile"
+    qsrcfile=$func_quote_for_eval_result
+
+    # Only build a PIC object if we are building libtool libraries.
+    if test "$build_libtool_libs" = yes; then
+      # Without this assignment, base_compile gets emptied.
+      fbsd_hideous_sh_bug=$base_compile
+
+      if test "$pic_mode" != no; then
+	command="$base_compile $qsrcfile $pic_flag"
+      else
+	# Don't build PIC code
+	command="$base_compile $qsrcfile"
+      fi
+
+      func_mkdir_p "$xdir$objdir"
+
+      if test -z "$output_obj"; then
+	# Place PIC objects in $objdir
+	command="$command -o $lobj"
+      fi
+
+      func_show_eval_locale "$command"	\
+          'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE'
+
+      if test "$need_locks" = warn &&
+	 test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+	$ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+
+      # Just move the object if needed, then go on to compile the next one
+      if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then
+	func_show_eval '$MV "$output_obj" "$lobj"' \
+	  'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+      fi
+
+      # Allow error messages only from the first compilation.
+      if test "$suppress_opt" = yes; then
+	suppress_output=' >/dev/null 2>&1'
+      fi
+    fi
+
+    # Only build a position-dependent object if we build old libraries.
+    if test "$build_old_libs" = yes; then
+      if test "$pic_mode" != yes; then
+	# Don't build PIC code
+	command="$base_compile $qsrcfile$pie_flag"
+      else
+	command="$base_compile $qsrcfile $pic_flag"
+      fi
+      if test "$compiler_c_o" = yes; then
+	command="$command -o $obj"
+      fi
+
+      # Suppress compiler output if we already did a PIC compilation.
+      command="$command$suppress_output"
+      func_show_eval_locale "$command" \
+        '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
+
+      if test "$need_locks" = warn &&
+	 test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+	$ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+
+      # Just move the object if needed
+      if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then
+	func_show_eval '$MV "$output_obj" "$obj"' \
+	  'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+      fi
+    fi
+
+    $opt_dry_run || {
+      func_write_libtool_object "$libobj" "$objdir/$objname" "$objname"
+
+      # Unlock the critical section if it was locked
+      if test "$need_locks" != no; then
+	removelist=$lockfile
+        $RM "$lockfile"
+      fi
+    }
+
+    exit $EXIT_SUCCESS
+}
+
+$opt_help || {
+  test "$mode" = compile && func_mode_compile ${1+"$@"}
+}
+
+func_mode_help ()
+{
+    # We need to display help for each of the modes.
+    case $mode in
+      "")
+        # Generic help is extracted from the usage comments
+        # at the start of this file.
+        func_help
+        ;;
+
+      clean)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE...
+
+Remove files from the build directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm').  RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, object or program, all the files associated
+with it are deleted. Otherwise, only FILE itself is deleted using RM."
+        ;;
+
+      compile)
+      $ECHO \
+"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE
+
+Compile a source file into a libtool library object.
+
+This mode accepts the following additional options:
+
+  -o OUTPUT-FILE    set the output file name to OUTPUT-FILE
+  -no-suppress      do not suppress compiler output for multiple passes
+  -prefer-pic       try to building PIC objects only
+  -prefer-non-pic   try to building non-PIC objects only
+  -shared           do not build a \`.o' file suitable for static linking
+  -static           only build a \`.o' file suitable for static linking
+  -Wc,FLAG          pass FLAG directly to the compiler
+
+COMPILE-COMMAND is a command to be used in creating a \`standard' object file
+from the given SOURCEFILE.
+
+The output file name is determined by removing the directory component from
+SOURCEFILE, then substituting the C source code suffix \`.c' with the
+library object suffix, \`.lo'."
+        ;;
+
+      execute)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]...
+
+Automatically set library path, then run a program.
+
+This mode accepts the following additional options:
+
+  -dlopen FILE      add the directory containing FILE to the library path
+
+This mode sets the library path environment variable according to \`-dlopen'
+flags.
+
+If any of the ARGS are libtool executable wrappers, then they are translated
+into their corresponding uninstalled binary, and any of their required library
+directories are added to the library path.
+
+Then, COMMAND is executed, with ARGS as arguments."
+        ;;
+
+      finish)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=finish [LIBDIR]...
+
+Complete the installation of libtool libraries.
+
+Each LIBDIR is a directory that contains libtool libraries.
+
+The commands that this mode executes may require superuser privileges.  Use
+the \`--dry-run' option if you just want to see what would be executed."
+        ;;
+
+      install)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND...
+
+Install executables or libraries.
+
+INSTALL-COMMAND is the installation command.  The first component should be
+either the \`install' or \`cp' program.
+
+The following components of INSTALL-COMMAND are treated specially:
+
+  -inst-prefix-dir PREFIX-DIR  Use PREFIX-DIR as a staging area for installation
+
+The rest of the components are interpreted as arguments to that command (only
+BSD-compatible install options are recognized)."
+        ;;
+
+      link)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=link LINK-COMMAND...
+
+Link object files or libraries together to form another library, or to
+create an executable program.
+
+LINK-COMMAND is a command using the C compiler that you would use to create
+a program from several object files.
+
+The following components of LINK-COMMAND are treated specially:
+
+  -all-static       do not do any dynamic linking at all
+  -avoid-version    do not add a version suffix if possible
+  -bindir BINDIR    specify path to binaries directory (for systems where
+                    libraries must be found in the PATH setting at runtime)
+  -dlopen FILE      \`-dlpreopen' FILE if it cannot be dlopened at runtime
+  -dlpreopen FILE   link in FILE and add its symbols to lt_preloaded_symbols
+  -export-dynamic   allow symbols from OUTPUT-FILE to be resolved with dlsym(3)
+  -export-symbols SYMFILE
+                    try to export only the symbols listed in SYMFILE
+  -export-symbols-regex REGEX
+                    try to export only the symbols matching REGEX
+  -LLIBDIR          search LIBDIR for required installed libraries
+  -lNAME            OUTPUT-FILE requires the installed library libNAME
+  -module           build a library that can dlopened
+  -no-fast-install  disable the fast-install mode
+  -no-install       link a not-installable executable
+  -no-undefined     declare that a library does not refer to external symbols
+  -o OUTPUT-FILE    create OUTPUT-FILE from the specified objects
+  -objectlist FILE  Use a list of object files found in FILE to specify objects
+  -precious-files-regex REGEX
+                    don't remove output files matching REGEX
+  -release RELEASE  specify package release information
+  -rpath LIBDIR     the created library will eventually be installed in LIBDIR
+  -R[ ]LIBDIR       add LIBDIR to the runtime path of programs and libraries
+  -shared           only do dynamic linking of libtool libraries
+  -shrext SUFFIX    override the standard shared library file extension
+  -static           do not do any dynamic linking of uninstalled libtool libraries
+  -static-libtool-libs
+                    do not do any dynamic linking of libtool libraries
+  -version-info CURRENT[:REVISION[:AGE]]
+                    specify library version info [each variable defaults to 0]
+  -weak LIBNAME     declare that the target provides the LIBNAME interface
+  -Wc,FLAG
+  -Xcompiler FLAG   pass linker-specific FLAG directly to the compiler
+  -Wl,FLAG
+  -Xlinker FLAG     pass linker-specific FLAG directly to the linker
+  -XCClinker FLAG   pass link-specific FLAG to the compiler driver (CC)
+
+All other options (arguments beginning with \`-') are ignored.
+
+Every other argument is treated as a filename.  Files ending in \`.la' are
+treated as uninstalled libtool libraries, other files are standard or library
+object files.
+
+If the OUTPUT-FILE ends in \`.la', then a libtool library is created,
+only library objects (\`.lo' files) may be specified, and \`-rpath' is
+required, except when creating a convenience library.
+
+If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created
+using \`ar' and \`ranlib', or on Windows using \`lib'.
+
+If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file
+is created, otherwise an executable program is created."
+        ;;
+
+      uninstall)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE...
+
+Remove libraries from an installation directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm').  RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, all the files associated with it are deleted.
+Otherwise, only FILE itself is deleted using RM."
+        ;;
+
+      *)
+        func_fatal_help "invalid operation mode \`$mode'"
+        ;;
+    esac
+
+    echo
+    $ECHO "Try \`$progname --help' for more information about other modes."
+}
+
+# Now that we've collected a possible --mode arg, show help if necessary
+if $opt_help; then
+  if test "$opt_help" = :; then
+    func_mode_help
+  else
+    {
+      func_help noexit
+      for mode in compile link execute install finish uninstall clean; do
+	func_mode_help
+      done
+    } | sed -n '1p; 2,$s/^Usage:/  or: /p'
+    {
+      func_help noexit
+      for mode in compile link execute install finish uninstall clean; do
+	echo
+	func_mode_help
+      done
+    } |
+    sed '1d
+      /^When reporting/,/^Report/{
+	H
+	d
+      }
+      $x
+      /information about other modes/d
+      /more detailed .*MODE/d
+      s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/'
+  fi
+  exit $?
+fi
+
+
+# func_mode_execute arg...
+func_mode_execute ()
+{
+    $opt_debug
+    # The first argument is the command name.
+    cmd="$nonopt"
+    test -z "$cmd" && \
+      func_fatal_help "you must specify a COMMAND"
+
+    # Handle -dlopen flags immediately.
+    for file in $execute_dlfiles; do
+      test -f "$file" \
+	|| func_fatal_help "\`$file' is not a file"
+
+      dir=
+      case $file in
+      *.la)
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$file" \
+	  || func_fatal_help "\`$lib' is not a valid libtool archive"
+
+	# Read the libtool library.
+	dlname=
+	library_names=
+	func_source "$file"
+
+	# Skip this library if it cannot be dlopened.
+	if test -z "$dlname"; then
+	  # Warn if it was a shared library.
+	  test -n "$library_names" && \
+	    func_warning "\`$file' was not linked with \`-export-dynamic'"
+	  continue
+	fi
+
+	func_dirname "$file" "" "."
+	dir="$func_dirname_result"
+
+	if test -f "$dir/$objdir/$dlname"; then
+	  dir="$dir/$objdir"
+	else
+	  if test ! -f "$dir/$dlname"; then
+	    func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
+	  fi
+	fi
+	;;
+
+      *.lo)
+	# Just add the directory containing the .lo file.
+	func_dirname "$file" "" "."
+	dir="$func_dirname_result"
+	;;
+
+      *)
+	func_warning "\`-dlopen' is ignored for non-libtool libraries and objects"
+	continue
+	;;
+      esac
+
+      # Get the absolute pathname.
+      absdir=`cd "$dir" && pwd`
+      test -n "$absdir" && dir="$absdir"
+
+      # Now add the directory to shlibpath_var.
+      if eval test -z \"\$$shlibpath_var\"; then
+	eval $shlibpath_var=\$dir
+      else
+	eval $shlibpath_var=\$dir:\$$shlibpath_var
+      fi
+    done
+
+    # This variable tells wrapper scripts just to set shlibpath_var
+    # rather than running their programs.
+    libtool_execute_magic="$magic"
+
+    # Check if any of the arguments is a wrapper script.
+    args=
+    for file
+    do
+      case $file in
+      -* | *.la | *.lo ) ;;
+      *)
+	# Do a test to see if this is really a libtool program.
+	if func_ltwrapper_script_p "$file"; then
+	  func_source "$file"
+	  # Transform arg to wrapped name.
+	  file="$progdir/$program"
+	elif func_ltwrapper_executable_p "$file"; then
+	  func_ltwrapper_scriptname "$file"
+	  func_source "$func_ltwrapper_scriptname_result"
+	  # Transform arg to wrapped name.
+	  file="$progdir/$program"
+	fi
+	;;
+      esac
+      # Quote arguments (to preserve shell metacharacters).
+      func_quote_for_eval "$file"
+      args="$args $func_quote_for_eval_result"
+    done
+
+    if test "X$opt_dry_run" = Xfalse; then
+      if test -n "$shlibpath_var"; then
+	# Export the shlibpath_var.
+	eval "export $shlibpath_var"
+      fi
+
+      # Restore saved environment variables
+      for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+      do
+	eval "if test \"\${save_$lt_var+set}\" = set; then
+                $lt_var=\$save_$lt_var; export $lt_var
+	      else
+		$lt_unset $lt_var
+	      fi"
+      done
+
+      # Now prepare to actually exec the command.
+      exec_cmd="\$cmd$args"
+    else
+      # Display what would be done.
+      if test -n "$shlibpath_var"; then
+	eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\""
+	echo "export $shlibpath_var"
+      fi
+      $ECHO "$cmd$args"
+      exit $EXIT_SUCCESS
+    fi
+}
+
+test "$mode" = execute && func_mode_execute ${1+"$@"}
+
+
+# func_mode_finish arg...
+func_mode_finish ()
+{
+    $opt_debug
+    libdirs="$nonopt"
+    admincmds=
+
+    if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+      for dir
+      do
+	libdirs="$libdirs $dir"
+      done
+
+      for libdir in $libdirs; do
+	if test -n "$finish_cmds"; then
+	  # Do each command in the finish commands.
+	  func_execute_cmds "$finish_cmds" 'admincmds="$admincmds
+'"$cmd"'"'
+	fi
+	if test -n "$finish_eval"; then
+	  # Do the single finish_eval.
+	  eval cmds=\"$finish_eval\"
+	  $opt_dry_run || eval "$cmds" || admincmds="$admincmds
+       $cmds"
+	fi
+      done
+    fi
+
+    # Exit here if they wanted silent mode.
+    $opt_silent && exit $EXIT_SUCCESS
+
+    echo "----------------------------------------------------------------------"
+    echo "Libraries have been installed in:"
+    for libdir in $libdirs; do
+      $ECHO "   $libdir"
+    done
+    echo
+    echo "If you ever happen to want to link against installed libraries"
+    echo "in a given directory, LIBDIR, you must either use libtool, and"
+    echo "specify the full pathname of the library, or use the \`-LLIBDIR'"
+    echo "flag during linking and do at least one of the following:"
+    if test -n "$shlibpath_var"; then
+      echo "   - add LIBDIR to the \`$shlibpath_var' environment variable"
+      echo "     during execution"
+    fi
+    if test -n "$runpath_var"; then
+      echo "   - add LIBDIR to the \`$runpath_var' environment variable"
+      echo "     during linking"
+    fi
+    if test -n "$hardcode_libdir_flag_spec"; then
+      libdir=LIBDIR
+      eval "flag=\"$hardcode_libdir_flag_spec\""
+
+      $ECHO "   - use the \`$flag' linker flag"
+    fi
+    if test -n "$admincmds"; then
+      $ECHO "   - have your system administrator run these commands:$admincmds"
+    fi
+    if test -f /etc/ld.so.conf; then
+      echo "   - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
+    fi
+    echo
+
+    echo "See any operating system documentation about shared libraries for"
+    case $host in
+      solaris2.[6789]|solaris2.1[0-9])
+        echo "more information, such as the ld(1), crle(1) and ld.so(8) manual"
+	echo "pages."
+	;;
+      *)
+        echo "more information, such as the ld(1) and ld.so(8) manual pages."
+        ;;
+    esac
+    echo "----------------------------------------------------------------------"
+    exit $EXIT_SUCCESS
+}
+
+test "$mode" = finish && func_mode_finish ${1+"$@"}
+
+
+# func_mode_install arg...
+func_mode_install ()
+{
+    $opt_debug
+    # There may be an optional sh(1) argument at the beginning of
+    # install_prog (especially on Windows NT).
+    if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh ||
+       # Allow the use of GNU shtool's install command.
+       case $nonopt in *shtool*) :;; *) false;; esac; then
+      # Aesthetically quote it.
+      func_quote_for_eval "$nonopt"
+      install_prog="$func_quote_for_eval_result "
+      arg=$1
+      shift
+    else
+      install_prog=
+      arg=$nonopt
+    fi
+
+    # The real first argument should be the name of the installation program.
+    # Aesthetically quote it.
+    func_quote_for_eval "$arg"
+    install_prog="$install_prog$func_quote_for_eval_result"
+    install_shared_prog=$install_prog
+    case " $install_prog " in
+      *[\\\ /]cp\ *) install_cp=: ;;
+      *) install_cp=false ;;
+    esac
+
+    # We need to accept at least all the BSD install flags.
+    dest=
+    files=
+    opts=
+    prev=
+    install_type=
+    isdir=no
+    stripme=
+    no_mode=:
+    for arg
+    do
+      arg2=
+      if test -n "$dest"; then
+	files="$files $dest"
+	dest=$arg
+	continue
+      fi
+
+      case $arg in
+      -d) isdir=yes ;;
+      -f)
+	if $install_cp; then :; else
+	  prev=$arg
+	fi
+	;;
+      -g | -m | -o)
+	prev=$arg
+	;;
+      -s)
+	stripme=" -s"
+	continue
+	;;
+      -*)
+	;;
+      *)
+	# If the previous option needed an argument, then skip it.
+	if test -n "$prev"; then
+	  if test "x$prev" = x-m && test -n "$install_override_mode"; then
+	    arg2=$install_override_mode
+	    no_mode=false
+	  fi
+	  prev=
+	else
+	  dest=$arg
+	  continue
+	fi
+	;;
+      esac
+
+      # Aesthetically quote the argument.
+      func_quote_for_eval "$arg"
+      install_prog="$install_prog $func_quote_for_eval_result"
+      if test -n "$arg2"; then
+	func_quote_for_eval "$arg2"
+      fi
+      install_shared_prog="$install_shared_prog $func_quote_for_eval_result"
+    done
+
+    test -z "$install_prog" && \
+      func_fatal_help "you must specify an install program"
+
+    test -n "$prev" && \
+      func_fatal_help "the \`$prev' option requires an argument"
+
+    if test -n "$install_override_mode" && $no_mode; then
+      if $install_cp; then :; else
+	func_quote_for_eval "$install_override_mode"
+	install_shared_prog="$install_shared_prog -m $func_quote_for_eval_result"
+      fi
+    fi
+
+    if test -z "$files"; then
+      if test -z "$dest"; then
+	func_fatal_help "no file or destination specified"
+      else
+	func_fatal_help "you must specify a destination"
+      fi
+    fi
+
+    # Strip any trailing slash from the destination.
+    func_stripname '' '/' "$dest"
+    dest=$func_stripname_result
+
+    # Check to see that the destination is a directory.
+    test -d "$dest" && isdir=yes
+    if test "$isdir" = yes; then
+      destdir="$dest"
+      destname=
+    else
+      func_dirname_and_basename "$dest" "" "."
+      destdir="$func_dirname_result"
+      destname="$func_basename_result"
+
+      # Not a directory, so check to see that there is only one file specified.
+      set dummy $files; shift
+      test "$#" -gt 1 && \
+	func_fatal_help "\`$dest' is not a directory"
+    fi
+    case $destdir in
+    [\\/]* | [A-Za-z]:[\\/]*) ;;
+    *)
+      for file in $files; do
+	case $file in
+	*.lo) ;;
+	*)
+	  func_fatal_help "\`$destdir' must be an absolute directory name"
+	  ;;
+	esac
+      done
+      ;;
+    esac
+
+    # This variable tells wrapper scripts just to set variables rather
+    # than running their programs.
+    libtool_install_magic="$magic"
+
+    staticlibs=
+    future_libdirs=
+    current_libdirs=
+    for file in $files; do
+
+      # Do each installation.
+      case $file in
+      *.$libext)
+	# Do the static libraries later.
+	staticlibs="$staticlibs $file"
+	;;
+
+      *.la)
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$file" \
+	  || func_fatal_help "\`$file' is not a valid libtool archive"
+
+	library_names=
+	old_library=
+	relink_command=
+	func_source "$file"
+
+	# Add the libdir to current_libdirs if it is the destination.
+	if test "X$destdir" = "X$libdir"; then
+	  case "$current_libdirs " in
+	  *" $libdir "*) ;;
+	  *) current_libdirs="$current_libdirs $libdir" ;;
+	  esac
+	else
+	  # Note the libdir as a future libdir.
+	  case "$future_libdirs " in
+	  *" $libdir "*) ;;
+	  *) future_libdirs="$future_libdirs $libdir" ;;
+	  esac
+	fi
+
+	func_dirname "$file" "/" ""
+	dir="$func_dirname_result"
+	dir="$dir$objdir"
+
+	if test -n "$relink_command"; then
+	  # Determine the prefix the user has applied to our future dir.
+	  inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"`
+
+	  # Don't allow the user to place us outside of our expected
+	  # location b/c this prevents finding dependent libraries that
+	  # are installed to the same prefix.
+	  # At present, this check doesn't affect windows .dll's that
+	  # are installed into $libdir/../bin (currently, that works fine)
+	  # but it's something to keep an eye on.
+	  test "$inst_prefix_dir" = "$destdir" && \
+	    func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir"
+
+	  if test -n "$inst_prefix_dir"; then
+	    # Stick the inst_prefix_dir data into the link command.
+	    relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
+	  else
+	    relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"`
+	  fi
+
+	  func_warning "relinking \`$file'"
+	  func_show_eval "$relink_command" \
+	    'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"'
+	fi
+
+	# See the names of the shared library.
+	set dummy $library_names; shift
+	if test -n "$1"; then
+	  realname="$1"
+	  shift
+
+	  srcname="$realname"
+	  test -n "$relink_command" && srcname="$realname"T
+
+	  # Install the shared library and build the symlinks.
+	  func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \
+	      'exit $?'
+	  tstripme="$stripme"
+	  case $host_os in
+	  cygwin* | mingw* | pw32* | cegcc*)
+	    case $realname in
+	    *.dll.a)
+	      tstripme=""
+	      ;;
+	    esac
+	    ;;
+	  esac
+	  if test -n "$tstripme" && test -n "$striplib"; then
+	    func_show_eval "$striplib $destdir/$realname" 'exit $?'
+	  fi
+
+	  if test "$#" -gt 0; then
+	    # Delete the old symlinks, and create new ones.
+	    # Try `ln -sf' first, because the `ln' binary might depend on
+	    # the symlink we replace!  Solaris /bin/ln does not understand -f,
+	    # so we also need to try rm && ln -s.
+	    for linkname
+	    do
+	      test "$linkname" != "$realname" \
+		&& func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })"
+	    done
+	  fi
+
+	  # Do each command in the postinstall commands.
+	  lib="$destdir/$realname"
+	  func_execute_cmds "$postinstall_cmds" 'exit $?'
+	fi
+
+	# Install the pseudo-library for information purposes.
+	func_basename "$file"
+	name="$func_basename_result"
+	instname="$dir/$name"i
+	func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
+
+	# Maybe install the static library, too.
+	test -n "$old_library" && staticlibs="$staticlibs $dir/$old_library"
+	;;
+
+      *.lo)
+	# Install (i.e. copy) a libtool object.
+
+	# Figure out destination file name, if it wasn't already specified.
+	if test -n "$destname"; then
+	  destfile="$destdir/$destname"
+	else
+	  func_basename "$file"
+	  destfile="$func_basename_result"
+	  destfile="$destdir/$destfile"
+	fi
+
+	# Deduce the name of the destination old-style object file.
+	case $destfile in
+	*.lo)
+	  func_lo2o "$destfile"
+	  staticdest=$func_lo2o_result
+	  ;;
+	*.$objext)
+	  staticdest="$destfile"
+	  destfile=
+	  ;;
+	*)
+	  func_fatal_help "cannot copy a libtool object to \`$destfile'"
+	  ;;
+	esac
+
+	# Install the libtool object if requested.
+	test -n "$destfile" && \
+	  func_show_eval "$install_prog $file $destfile" 'exit $?'
+
+	# Install the old object if enabled.
+	if test "$build_old_libs" = yes; then
+	  # Deduce the name of the old-style object file.
+	  func_lo2o "$file"
+	  staticobj=$func_lo2o_result
+	  func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?'
+	fi
+	exit $EXIT_SUCCESS
+	;;
+
+      *)
+	# Figure out destination file name, if it wasn't already specified.
+	if test -n "$destname"; then
+	  destfile="$destdir/$destname"
+	else
+	  func_basename "$file"
+	  destfile="$func_basename_result"
+	  destfile="$destdir/$destfile"
+	fi
+
+	# If the file is missing, and there is a .exe on the end, strip it
+	# because it is most likely a libtool script we actually want to
+	# install
+	stripped_ext=""
+	case $file in
+	  *.exe)
+	    if test ! -f "$file"; then
+	      func_stripname '' '.exe' "$file"
+	      file=$func_stripname_result
+	      stripped_ext=".exe"
+	    fi
+	    ;;
+	esac
+
+	# Do a test to see if this is really a libtool program.
+	case $host in
+	*cygwin* | *mingw*)
+	    if func_ltwrapper_executable_p "$file"; then
+	      func_ltwrapper_scriptname "$file"
+	      wrapper=$func_ltwrapper_scriptname_result
+	    else
+	      func_stripname '' '.exe' "$file"
+	      wrapper=$func_stripname_result
+	    fi
+	    ;;
+	*)
+	    wrapper=$file
+	    ;;
+	esac
+	if func_ltwrapper_script_p "$wrapper"; then
+	  notinst_deplibs=
+	  relink_command=
+
+	  func_source "$wrapper"
+
+	  # Check the variables that should have been set.
+	  test -z "$generated_by_libtool_version" && \
+	    func_fatal_error "invalid libtool wrapper script \`$wrapper'"
+
+	  finalize=yes
+	  for lib in $notinst_deplibs; do
+	    # Check to see that each library is installed.
+	    libdir=
+	    if test -f "$lib"; then
+	      func_source "$lib"
+	    fi
+	    libfile="$libdir/"`$ECHO "$lib" | $SED 's%^.*/%%g'` ### testsuite: skip nested quoting test
+	    if test -n "$libdir" && test ! -f "$libfile"; then
+	      func_warning "\`$lib' has not been installed in \`$libdir'"
+	      finalize=no
+	    fi
+	  done
+
+	  relink_command=
+	  func_source "$wrapper"
+
+	  outputname=
+	  if test "$fast_install" = no && test -n "$relink_command"; then
+	    $opt_dry_run || {
+	      if test "$finalize" = yes; then
+	        tmpdir=`func_mktempdir`
+		func_basename "$file$stripped_ext"
+		file="$func_basename_result"
+	        outputname="$tmpdir/$file"
+	        # Replace the output file specification.
+	        relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'`
+
+	        $opt_silent || {
+	          func_quote_for_expand "$relink_command"
+		  eval "func_echo $func_quote_for_expand_result"
+	        }
+	        if eval "$relink_command"; then :
+	          else
+		  func_error "error: relink \`$file' with the above command before installing it"
+		  $opt_dry_run || ${RM}r "$tmpdir"
+		  continue
+	        fi
+	        file="$outputname"
+	      else
+	        func_warning "cannot relink \`$file'"
+	      fi
+	    }
+	  else
+	    # Install the binary that we compiled earlier.
+	    file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"`
+	  fi
+	fi
+
+	# remove .exe since cygwin /usr/bin/install will append another
+	# one anyway
+	case $install_prog,$host in
+	*/usr/bin/install*,*cygwin*)
+	  case $file:$destfile in
+	  *.exe:*.exe)
+	    # this is ok
+	    ;;
+	  *.exe:*)
+	    destfile=$destfile.exe
+	    ;;
+	  *:*.exe)
+	    func_stripname '' '.exe' "$destfile"
+	    destfile=$func_stripname_result
+	    ;;
+	  esac
+	  ;;
+	esac
+	func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?'
+	$opt_dry_run || if test -n "$outputname"; then
+	  ${RM}r "$tmpdir"
+	fi
+	;;
+      esac
+    done
+
+    for file in $staticlibs; do
+      func_basename "$file"
+      name="$func_basename_result"
+
+      # Set up the ranlib parameters.
+      oldlib="$destdir/$name"
+
+      func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
+
+      if test -n "$stripme" && test -n "$old_striplib"; then
+	func_show_eval "$old_striplib $oldlib" 'exit $?'
+      fi
+
+      # Do each command in the postinstall commands.
+      func_execute_cmds "$old_postinstall_cmds" 'exit $?'
+    done
+
+    test -n "$future_libdirs" && \
+      func_warning "remember to run \`$progname --finish$future_libdirs'"
+
+    if test -n "$current_libdirs" && $opt_finish; then
+      # Maybe just do a dry run.
+      $opt_dry_run && current_libdirs=" -n$current_libdirs"
+      exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs'
+    else
+      exit $EXIT_SUCCESS
+    fi
+}
+
+test "$mode" = install && func_mode_install ${1+"$@"}
+
+
+# func_generate_dlsyms outputname originator pic_p
+# Extract symbols from dlprefiles and create ${outputname}S.o with
+# a dlpreopen symbol table.
+func_generate_dlsyms ()
+{
+    $opt_debug
+    my_outputname="$1"
+    my_originator="$2"
+    my_pic_p="${3-no}"
+    my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'`
+    my_dlsyms=
+
+    if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+      if test -n "$NM" && test -n "$global_symbol_pipe"; then
+	my_dlsyms="${my_outputname}S.c"
+      else
+	func_error "not configured to extract global symbols from dlpreopened files"
+      fi
+    fi
+
+    if test -n "$my_dlsyms"; then
+      case $my_dlsyms in
+      "") ;;
+      *.c)
+	# Discover the nlist of each of the dlfiles.
+	nlist="$output_objdir/${my_outputname}.nm"
+
+	func_show_eval "$RM $nlist ${nlist}S ${nlist}T"
+
+	# Parse the name list into a source file.
+	func_verbose "creating $output_objdir/$my_dlsyms"
+
+	$opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\
+/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */
+/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif
+
+#if defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4))
+#pragma GCC diagnostic ignored \"-Wstrict-prototypes\"
+#endif
+
+/* External symbol declarations for the compiler. */\
+"
+
+	if test "$dlself" = yes; then
+	  func_verbose "generating symbol list for \`$output'"
+
+	  $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist"
+
+	  # Add our own program objects to the symbol list.
+	  progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	  for progfile in $progfiles; do
+	    func_verbose "extracting global C symbols from \`$progfile'"
+	    $opt_dry_run || eval "$NM $progfile | $global_symbol_pipe >> '$nlist'"
+	  done
+
+	  if test -n "$exclude_expsyms"; then
+	    $opt_dry_run || {
+	      $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
+	      $MV "$nlist"T "$nlist"
+	    }
+	  fi
+
+	  if test -n "$export_symbols_regex"; then
+	    $opt_dry_run || {
+	      $EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T
+	      $MV "$nlist"T "$nlist"
+	    }
+	  fi
+
+	  # Prepare the list of exported symbols
+	  if test -z "$export_symbols"; then
+	    export_symbols="$output_objdir/$outputname.exp"
+	    $opt_dry_run || {
+	      $RM $export_symbols
+	      ${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' < "$nlist" > "$export_symbols"
+	      case $host in
+	      *cygwin* | *mingw* | *cegcc* )
+                echo EXPORTS > "$output_objdir/$outputname.def"
+                cat "$export_symbols" >> "$output_objdir/$outputname.def"
+	        ;;
+	      esac
+	    }
+	  else
+	    $opt_dry_run || {
+	      ${SED} -e 's/\([].[*^$]\)/\\\1/g' -e 's/^/ /' -e 's/$/$/' < "$export_symbols" > "$output_objdir/$outputname.exp"
+	      $GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T
+	      $MV "$nlist"T "$nlist"
+	      case $host in
+	        *cygwin* | *mingw* | *cegcc* )
+	          echo EXPORTS > "$output_objdir/$outputname.def"
+	          cat "$nlist" >> "$output_objdir/$outputname.def"
+	          ;;
+	      esac
+	    }
+	  fi
+	fi
+
+	for dlprefile in $dlprefiles; do
+	  func_verbose "extracting global C symbols from \`$dlprefile'"
+	  func_basename "$dlprefile"
+	  name="$func_basename_result"
+	  $opt_dry_run || {
+	    $ECHO ": $name " >> "$nlist"
+	    eval "$NM $dlprefile 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+	  }
+	done
+
+	$opt_dry_run || {
+	  # Make sure we have at least an empty file.
+	  test -f "$nlist" || : > "$nlist"
+
+	  if test -n "$exclude_expsyms"; then
+	    $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
+	    $MV "$nlist"T "$nlist"
+	  fi
+
+	  # Try sorting and uniquifying the output.
+	  if $GREP -v "^: " < "$nlist" |
+	      if sort -k 3 </dev/null >/dev/null 2>&1; then
+		sort -k 3
+	      else
+		sort +2
+	      fi |
+	      uniq > "$nlist"S; then
+	    :
+	  else
+	    $GREP -v "^: " < "$nlist" > "$nlist"S
+	  fi
+
+	  if test -f "$nlist"S; then
+	    eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"'
+	  else
+	    echo '/* NONE */' >> "$output_objdir/$my_dlsyms"
+	  fi
+
+	  echo >> "$output_objdir/$my_dlsyms" "\
+
+/* The mapping between symbol names and symbols.  */
+typedef struct {
+  const char *name;
+  void *address;
+} lt_dlsymlist;
+"
+	  case $host in
+	  *cygwin* | *mingw* | *cegcc* )
+	    echo >> "$output_objdir/$my_dlsyms" "\
+/* DATA imports from DLLs on WIN32 con't be const, because
+   runtime relocations are performed -- see ld's documentation
+   on pseudo-relocs.  */"
+	    lt_dlsym_const= ;;
+	  *osf5*)
+	    echo >> "$output_objdir/$my_dlsyms" "\
+/* This system does not cope well with relocations in const data */"
+	    lt_dlsym_const= ;;
+	  *)
+	    lt_dlsym_const=const ;;
+	  esac
+
+	  echo >> "$output_objdir/$my_dlsyms" "\
+extern $lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[];
+$lt_dlsym_const lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[] =
+{\
+  { \"$my_originator\", (void *) 0 },"
+
+	  case $need_lib_prefix in
+	  no)
+	    eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms"
+	    ;;
+	  *)
+	    eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms"
+	    ;;
+	  esac
+	  echo >> "$output_objdir/$my_dlsyms" "\
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt_${my_prefix}_LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif\
+"
+	} # !$opt_dry_run
+
+	pic_flag_for_symtable=
+	case "$compile_command " in
+	*" -static "*) ;;
+	*)
+	  case $host in
+	  # compiling the symbol table file with pic_flag works around
+	  # a FreeBSD bug that causes programs to crash when -lm is
+	  # linked before any other PIC object.  But we must not use
+	  # pic_flag when linking with -static.  The problem exists in
+	  # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
+	  *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+	    pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
+	  *-*-hpux*)
+	    pic_flag_for_symtable=" $pic_flag"  ;;
+	  *)
+	    if test "X$my_pic_p" != Xno; then
+	      pic_flag_for_symtable=" $pic_flag"
+	    fi
+	    ;;
+	  esac
+	  ;;
+	esac
+	symtab_cflags=
+	for arg in $LTCFLAGS; do
+	  case $arg in
+	  -pie | -fpie | -fPIE) ;;
+	  *) symtab_cflags="$symtab_cflags $arg" ;;
+	  esac
+	done
+
+	# Now compile the dynamic symbol file.
+	func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?'
+
+	# Clean up the generated files.
+	func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"'
+
+	# Transform the symbol file into the correct name.
+	symfileobj="$output_objdir/${my_outputname}S.$objext"
+	case $host in
+	*cygwin* | *mingw* | *cegcc* )
+	  if test -f "$output_objdir/$my_outputname.def"; then
+	    compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+	    finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+	  else
+	    compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	    finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  fi
+	  ;;
+	*)
+	  compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  ;;
+	esac
+	;;
+      *)
+	func_fatal_error "unknown suffix for \`$my_dlsyms'"
+	;;
+      esac
+    else
+      # We keep going just in case the user didn't refer to
+      # lt_preloaded_symbols.  The linker will fail if global_symbol_pipe
+      # really was required.
+
+      # Nullify the symbol file.
+      compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"`
+      finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"`
+    fi
+}
+
+# func_win32_libid arg
+# return the library type of file 'arg'
+#
+# Need a lot of goo to handle *both* DLLs and import libs
+# Has to be a shell function in order to 'eat' the argument
+# that is supplied when $file_magic_command is called.
+# Despite the name, also deal with 64 bit binaries.
+func_win32_libid ()
+{
+  $opt_debug
+  win32_libid_type="unknown"
+  win32_fileres=`file -L $1 2>/dev/null`
+  case $win32_fileres in
+  *ar\ archive\ import\ library*) # definitely import
+    win32_libid_type="x86 archive import"
+    ;;
+  *ar\ archive*) # could be an import, or static
+    if $OBJDUMP -f "$1" | $SED -e '10q' 2>/dev/null |
+       $EGREP 'file format (pe-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then
+      win32_nmres=`$NM -f posix -A "$1" |
+	$SED -n -e '
+	    1,100{
+		/ I /{
+		    s,.*,import,
+		    p
+		    q
+		}
+	    }'`
+      case $win32_nmres in
+      import*)  win32_libid_type="x86 archive import";;
+      *)        win32_libid_type="x86 archive static";;
+      esac
+    fi
+    ;;
+  *DLL*)
+    win32_libid_type="x86 DLL"
+    ;;
+  *executable*) # but shell scripts are "executable" too...
+    case $win32_fileres in
+    *MS\ Windows\ PE\ Intel*)
+      win32_libid_type="x86 DLL"
+      ;;
+    esac
+    ;;
+  esac
+  $ECHO "$win32_libid_type"
+}
+
+
+
+# func_extract_an_archive dir oldlib
+func_extract_an_archive ()
+{
+    $opt_debug
+    f_ex_an_ar_dir="$1"; shift
+    f_ex_an_ar_oldlib="$1"
+    if test "$lock_old_archive_extraction" = yes; then
+      lockfile=$f_ex_an_ar_oldlib.lock
+      until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+	func_echo "Waiting for $lockfile to be removed"
+	sleep 2
+      done
+    fi
+    func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \
+		   'stat=$?; rm -f "$lockfile"; exit $stat'
+    if test "$lock_old_archive_extraction" = yes; then
+      $opt_dry_run || rm -f "$lockfile"
+    fi
+    if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then
+     :
+    else
+      func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib"
+    fi
+}
+
+
+# func_extract_archives gentop oldlib ...
+func_extract_archives ()
+{
+    $opt_debug
+    my_gentop="$1"; shift
+    my_oldlibs=${1+"$@"}
+    my_oldobjs=""
+    my_xlib=""
+    my_xabs=""
+    my_xdir=""
+
+    for my_xlib in $my_oldlibs; do
+      # Extract the objects.
+      case $my_xlib in
+	[\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;;
+	*) my_xabs=`pwd`"/$my_xlib" ;;
+      esac
+      func_basename "$my_xlib"
+      my_xlib="$func_basename_result"
+      my_xlib_u=$my_xlib
+      while :; do
+        case " $extracted_archives " in
+	*" $my_xlib_u "*)
+	  func_arith $extracted_serial + 1
+	  extracted_serial=$func_arith_result
+	  my_xlib_u=lt$extracted_serial-$my_xlib ;;
+	*) break ;;
+	esac
+      done
+      extracted_archives="$extracted_archives $my_xlib_u"
+      my_xdir="$my_gentop/$my_xlib_u"
+
+      func_mkdir_p "$my_xdir"
+
+      case $host in
+      *-darwin*)
+	func_verbose "Extracting $my_xabs"
+	# Do not bother doing anything if just a dry run
+	$opt_dry_run || {
+	  darwin_orig_dir=`pwd`
+	  cd $my_xdir || exit $?
+	  darwin_archive=$my_xabs
+	  darwin_curdir=`pwd`
+	  darwin_base_archive=`basename "$darwin_archive"`
+	  darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true`
+	  if test -n "$darwin_arches"; then
+	    darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'`
+	    darwin_arch=
+	    func_verbose "$darwin_base_archive has multiple architectures $darwin_arches"
+	    for darwin_arch in  $darwin_arches ; do
+	      func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+	      $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}"
+	      cd "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+	      func_extract_an_archive "`pwd`" "${darwin_base_archive}"
+	      cd "$darwin_curdir"
+	      $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}"
+	    done # $darwin_arches
+            ## Okay now we've a bunch of thin objects, gotta fatten them up :)
+	    darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u`
+	    darwin_file=
+	    darwin_files=
+	    for darwin_file in $darwin_filelist; do
+	      darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP`
+	      $LIPO -create -output "$darwin_file" $darwin_files
+	    done # $darwin_filelist
+	    $RM -rf unfat-$$
+	    cd "$darwin_orig_dir"
+	  else
+	    cd $darwin_orig_dir
+	    func_extract_an_archive "$my_xdir" "$my_xabs"
+	  fi # $darwin_arches
+	} # !$opt_dry_run
+	;;
+      *)
+        func_extract_an_archive "$my_xdir" "$my_xabs"
+	;;
+      esac
+      my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP`
+    done
+
+    func_extract_archives_result="$my_oldobjs"
+}
+
+
+# func_emit_wrapper [arg=no]
+#
+# Emit a libtool wrapper script on stdout.
+# Don't directly open a file because we may want to
+# incorporate the script contents within a cygwin/mingw
+# wrapper executable.  Must ONLY be called from within
+# func_mode_link because it depends on a number of variables
+# set therein.
+#
+# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR
+# variable will take.  If 'yes', then the emitted script
+# will assume that the directory in which it is stored is
+# the $objdir directory.  This is a cygwin/mingw-specific
+# behavior.
+func_emit_wrapper ()
+{
+	func_emit_wrapper_arg1=${1-no}
+
+	$ECHO "\
+#! $SHELL
+
+# $output - temporary wrapper script for $objdir/$outputname
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# The $output program cannot be directly executed until all the libtool
+# libraries that it depends on are installed.
+#
+# This wrapper script should never be moved out of the build directory.
+# If it is, it will not operate correctly.
+
+# Sed substitution that helps us do robust quoting.  It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='$sed_quote_subst'
+
+# Be Bourne compatible
+if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+relink_command=\"$relink_command\"
+
+# This environment variable determines our operation mode.
+if test \"\$libtool_install_magic\" = \"$magic\"; then
+  # install mode needs the following variables:
+  generated_by_libtool_version='$macro_version'
+  notinst_deplibs='$notinst_deplibs'
+else
+  # When we are sourced in execute mode, \$file and \$ECHO are already set.
+  if test \"\$libtool_execute_magic\" != \"$magic\"; then
+    file=\"\$0\""
+
+    qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"`
+    $ECHO "\
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$1
+_LTECHO_EOF'
+}
+    ECHO=\"$qECHO\"
+  fi\
+
+  # Find the directory that this script lives in.
+  thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\`
+  test \"x\$thisdir\" = \"x\$file\" && thisdir=.
+
+  # Follow symbolic links until we get to the real thisdir.
+  file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\`
+  while test -n \"\$file\"; do
+    destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\`
+
+    # If there was a directory component, then change thisdir.
+    if test \"x\$destdir\" != \"x\$file\"; then
+      case \"\$destdir\" in
+      [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;;
+      *) thisdir=\"\$thisdir/\$destdir\" ;;
+      esac
+    fi
+
+    file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\`
+    file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\`
+  done
+
+  # Usually 'no', except on cygwin/mingw when embedded into
+  # the cwrapper.
+  WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1
+  if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then
+    # special case for '.'
+    if test \"\$thisdir\" = \".\"; then
+      thisdir=\`pwd\`
+    fi
+    # remove .libs from thisdir
+    case \"\$thisdir\" in
+    *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;;
+    $objdir )   thisdir=. ;;
+    esac
+  fi
+
+  # Try to get the absolute directory name.
+  absdir=\`cd \"\$thisdir\" && pwd\`
+  test -n \"\$absdir\" && thisdir=\"\$absdir\"
+"
+
+	if test "$fast_install" = yes; then
+	  $ECHO "\
+  program=lt-'$outputname'$exeext
+  progdir=\"\$thisdir/$objdir\"
+
+  if test ! -f \"\$progdir/\$program\" ||
+     { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\
+       test \"X\$file\" != \"X\$progdir/\$program\"; }; then
+
+    file=\"\$\$-\$program\"
+
+    if test ! -d \"\$progdir\"; then
+      $MKDIR \"\$progdir\"
+    else
+      $RM \"\$progdir/\$file\"
+    fi"
+
+	  $ECHO "\
+
+    # relink executable if necessary
+    if test -n \"\$relink_command\"; then
+      if relink_command_output=\`eval \"\$relink_command\" 2>&1\`; then :
+      else
+	$ECHO \"\$relink_command_output\" >&2
+	$RM \"\$progdir/\$file\"
+	exit 1
+      fi
+    fi
+
+    $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null ||
+    { $RM \"\$progdir/\$program\";
+      $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; }
+    $RM \"\$progdir/\$file\"
+  fi"
+	else
+	  $ECHO "\
+  program='$outputname'
+  progdir=\"\$thisdir/$objdir\"
+"
+	fi
+
+	$ECHO "\
+
+  if test -f \"\$progdir/\$program\"; then"
+
+	# Export our shlibpath_var if we have one.
+	if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+	  $ECHO "\
+    # Add our own library path to $shlibpath_var
+    $shlibpath_var=\"$temp_rpath\$$shlibpath_var\"
+
+    # Some systems cannot cope with colon-terminated $shlibpath_var
+    # The second colon is a workaround for a bug in BeOS R4 sed
+    $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\`
+
+    export $shlibpath_var
+"
+	fi
+
+	# fixup the dll searchpath if we need to.
+	if test -n "$dllsearchpath"; then
+	  $ECHO "\
+    # Add the dll search path components to the executable PATH
+    PATH=$dllsearchpath:\$PATH
+"
+	fi
+
+	$ECHO "\
+    if test \"\$libtool_execute_magic\" != \"$magic\"; then
+      # Run the actual program with our arguments.
+"
+	case $host in
+	# Backslashes separate directories on plain windows
+	*-*-mingw | *-*-os2* | *-cegcc*)
+	  $ECHO "\
+      exec \"\$progdir\\\\\$program\" \${1+\"\$@\"}
+"
+	  ;;
+
+	*)
+	  $ECHO "\
+      exec \"\$progdir/\$program\" \${1+\"\$@\"}
+"
+	  ;;
+	esac
+	$ECHO "\
+      \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2
+      exit 1
+    fi
+  else
+    # The program doesn't exist.
+    \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2
+    \$ECHO \"This script is just a wrapper for \$program.\" 1>&2
+    \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2
+    exit 1
+  fi
+fi\
+"
+}
+
+
+# func_to_host_path arg
+#
+# Convert paths to host format when used with build tools.
+# Intended for use with "native" mingw (where libtool itself
+# is running under the msys shell), or in the following cross-
+# build environments:
+#    $build          $host
+#    mingw (msys)    mingw  [e.g. native]
+#    cygwin          mingw
+#    *nix + wine     mingw
+# where wine is equipped with the `winepath' executable.
+# In the native mingw case, the (msys) shell automatically
+# converts paths for any non-msys applications it launches,
+# but that facility isn't available from inside the cwrapper.
+# Similar accommodations are necessary for $host mingw and
+# $build cygwin.  Calling this function does no harm for other
+# $host/$build combinations not listed above.
+#
+# ARG is the path (on $build) that should be converted to
+# the proper representation for $host. The result is stored
+# in $func_to_host_path_result.
+func_to_host_path ()
+{
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    case $host in
+      *mingw* )
+        lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+        case $build in
+          *mingw* ) # actually, msys
+            # awkward: cmd appends spaces to result
+            func_to_host_path_result=`( cmd //c echo "$1" ) 2>/dev/null |
+              $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
+            ;;
+          *cygwin* )
+            func_to_host_path_result=`cygpath -w "$1" |
+	      $SED -e "$lt_sed_naive_backslashify"`
+            ;;
+          * )
+            # Unfortunately, winepath does not exit with a non-zero
+            # error code, so we are forced to check the contents of
+            # stdout. On the other hand, if the command is not
+            # found, the shell will set an exit code of 127 and print
+            # *an error message* to stdout. So we must check for both
+            # error code of zero AND non-empty stdout, which explains
+            # the odd construction:
+            func_to_host_path_tmp1=`winepath -w "$1" 2>/dev/null`
+            if test "$?" -eq 0 && test -n "${func_to_host_path_tmp1}"; then
+              func_to_host_path_result=`$ECHO "$func_to_host_path_tmp1" |
+                $SED -e "$lt_sed_naive_backslashify"`
+            else
+              # Allow warning below.
+              func_to_host_path_result=
+            fi
+            ;;
+        esac
+        if test -z "$func_to_host_path_result" ; then
+          func_error "Could not determine host path corresponding to"
+          func_error "  \`$1'"
+          func_error "Continuing, but uninstalled executables may not work."
+          # Fallback:
+          func_to_host_path_result="$1"
+        fi
+        ;;
+    esac
+  fi
+}
+# end: func_to_host_path
+
+# func_to_host_pathlist arg
+#
+# Convert pathlists to host format when used with build tools.
+# See func_to_host_path(), above. This function supports the
+# following $build/$host combinations (but does no harm for
+# combinations not listed here):
+#    $build          $host
+#    mingw (msys)    mingw  [e.g. native]
+#    cygwin          mingw
+#    *nix + wine     mingw
+#
+# Path separators are also converted from $build format to
+# $host format. If ARG begins or ends with a path separator
+# character, it is preserved (but converted to $host format)
+# on output.
+#
+# ARG is a pathlist (on $build) that should be converted to
+# the proper representation on $host. The result is stored
+# in $func_to_host_pathlist_result.
+func_to_host_pathlist ()
+{
+  func_to_host_pathlist_result="$1"
+  if test -n "$1"; then
+    case $host in
+      *mingw* )
+        lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+        # Remove leading and trailing path separator characters from
+        # ARG. msys behavior is inconsistent here, cygpath turns them
+        # into '.;' and ';.', and winepath ignores them completely.
+	func_stripname : : "$1"
+        func_to_host_pathlist_tmp1=$func_stripname_result
+        case $build in
+          *mingw* ) # Actually, msys.
+            # Awkward: cmd appends spaces to result.
+            func_to_host_pathlist_result=`
+	      ( cmd //c echo "$func_to_host_pathlist_tmp1" ) 2>/dev/null |
+	      $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
+            ;;
+          *cygwin* )
+            func_to_host_pathlist_result=`cygpath -w -p "$func_to_host_pathlist_tmp1" |
+              $SED -e "$lt_sed_naive_backslashify"`
+            ;;
+          * )
+            # unfortunately, winepath doesn't convert pathlists
+            func_to_host_pathlist_result=""
+            func_to_host_pathlist_oldIFS=$IFS
+            IFS=:
+            for func_to_host_pathlist_f in $func_to_host_pathlist_tmp1 ; do
+              IFS=$func_to_host_pathlist_oldIFS
+              if test -n "$func_to_host_pathlist_f" ; then
+                func_to_host_path "$func_to_host_pathlist_f"
+                if test -n "$func_to_host_path_result" ; then
+                  if test -z "$func_to_host_pathlist_result" ; then
+                    func_to_host_pathlist_result="$func_to_host_path_result"
+                  else
+                    func_append func_to_host_pathlist_result ";$func_to_host_path_result"
+                  fi
+                fi
+              fi
+            done
+            IFS=$func_to_host_pathlist_oldIFS
+            ;;
+        esac
+        if test -z "$func_to_host_pathlist_result"; then
+          func_error "Could not determine the host path(s) corresponding to"
+          func_error "  \`$1'"
+          func_error "Continuing, but uninstalled executables may not work."
+          # Fallback. This may break if $1 contains DOS-style drive
+          # specifications. The fix is not to complicate the expression
+          # below, but for the user to provide a working wine installation
+          # with winepath so that path translation in the cross-to-mingw
+          # case works properly.
+          lt_replace_pathsep_nix_to_dos="s|:|;|g"
+          func_to_host_pathlist_result=`echo "$func_to_host_pathlist_tmp1" |\
+            $SED -e "$lt_replace_pathsep_nix_to_dos"`
+        fi
+        # Now, add the leading and trailing path separators back
+        case "$1" in
+          :* ) func_to_host_pathlist_result=";$func_to_host_pathlist_result"
+            ;;
+        esac
+        case "$1" in
+          *: ) func_append func_to_host_pathlist_result ";"
+            ;;
+        esac
+        ;;
+    esac
+  fi
+}
+# end: func_to_host_pathlist
+
+# func_emit_cwrapperexe_src
+# emit the source code for a wrapper executable on stdout
+# Must ONLY be called from within func_mode_link because
+# it depends on a number of variable set therein.
+func_emit_cwrapperexe_src ()
+{
+	cat <<EOF
+
+/* $cwrappersource - temporary wrapper executable for $objdir/$outputname
+   Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+
+   The $output program cannot be directly executed until all the libtool
+   libraries that it depends on are installed.
+
+   This wrapper executable should never be moved out of the build directory.
+   If it is, it will not operate correctly.
+
+   Currently, it simply execs the wrapper *script* "$SHELL $output",
+   but could eventually absorb all of the scripts functionality and
+   exec $objdir/$outputname directly.
+*/
+EOF
+	    cat <<"EOF"
+#ifdef _MSC_VER
+# define _CRT_SECURE_NO_DEPRECATE 1
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef _MSC_VER
+# include <direct.h>
+# include <process.h>
+# include <io.h>
+#else
+# include <unistd.h>
+# include <stdint.h>
+# ifdef __CYGWIN__
+#  include <io.h>
+# endif
+#endif
+#include <malloc.h>
+#include <stdarg.h>
+#include <assert.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+/* declarations of non-ANSI functions */
+#if defined(__MINGW32__)
+# ifdef __STRICT_ANSI__
+int _putenv (const char *);
+# endif
+#elif defined(__CYGWIN__)
+# ifdef __STRICT_ANSI__
+char *realpath (const char *, char *);
+int putenv (char *);
+int setenv (const char *, const char *, int);
+# endif
+/* #elif defined (other platforms) ... */
+#endif
+
+/* portability defines, excluding path handling macros */
+#if defined(_MSC_VER)
+# define setmode _setmode
+# define stat    _stat
+# define chmod   _chmod
+# define getcwd  _getcwd
+# define putenv  _putenv
+# define S_IXUSR _S_IEXEC
+# ifndef _INTPTR_T_DEFINED
+#  define _INTPTR_T_DEFINED
+#  define intptr_t int
+# endif
+#elif defined(__MINGW32__)
+# define setmode _setmode
+# define stat    _stat
+# define chmod   _chmod
+# define getcwd  _getcwd
+# define putenv  _putenv
+#elif defined(__CYGWIN__)
+# define HAVE_SETENV
+# define FOPEN_WB "wb"
+/* #elif defined (other platforms) ... */
+#endif
+
+#if defined(PATH_MAX)
+# define LT_PATHMAX PATH_MAX
+#elif defined(MAXPATHLEN)
+# define LT_PATHMAX MAXPATHLEN
+#else
+# define LT_PATHMAX 1024
+#endif
+
+#ifndef S_IXOTH
+# define S_IXOTH 0
+#endif
+#ifndef S_IXGRP
+# define S_IXGRP 0
+#endif
+
+/* path handling portability macros */
+#ifndef DIR_SEPARATOR
+# define DIR_SEPARATOR '/'
+# define PATH_SEPARATOR ':'
+#endif
+
+#if (defined (_WIN32) && ! defined(__CYGWIN__)) || defined (__MSDOS__) || \
+  defined (__DJGPP__) || defined (__OS2__)
+# define HAVE_DOS_BASED_FILE_SYSTEM
+# define FOPEN_WB "wb"
+# ifndef DIR_SEPARATOR_2
+#  define DIR_SEPARATOR_2 '\\'
+# endif
+# ifndef PATH_SEPARATOR_2
+#  define PATH_SEPARATOR_2 ';'
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR_2
+# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
+#else /* DIR_SEPARATOR_2 */
+# define IS_DIR_SEPARATOR(ch) \
+	(((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
+#endif /* DIR_SEPARATOR_2 */
+
+#ifndef PATH_SEPARATOR_2
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR)
+#else /* PATH_SEPARATOR_2 */
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2)
+#endif /* PATH_SEPARATOR_2 */
+
+#ifndef FOPEN_WB
+# define FOPEN_WB "w"
+#endif
+#ifndef _O_BINARY
+# define _O_BINARY 0
+#endif
+
+#define XMALLOC(type, num)      ((type *) xmalloc ((num) * sizeof(type)))
+#define XFREE(stale) do { \
+  if (stale) { free ((void *) stale); stale = 0; } \
+} while (0)
+
+#undef LTWRAPPER_DEBUGPRINTF
+#if defined LT_DEBUGWRAPPER
+# define LTWRAPPER_DEBUGPRINTF(args) ltwrapper_debugprintf args
+static void
+ltwrapper_debugprintf (const char *fmt, ...)
+{
+    va_list args;
+    va_start (args, fmt);
+    (void) vfprintf (stderr, fmt, args);
+    va_end (args);
+}
+#else
+# define LTWRAPPER_DEBUGPRINTF(args)
+#endif
+
+const char *program_name = NULL;
+
+void *xmalloc (size_t num);
+char *xstrdup (const char *string);
+const char *base_name (const char *name);
+char *find_executable (const char *wrapper);
+char *chase_symlinks (const char *pathspec);
+int make_executable (const char *path);
+int check_executable (const char *path);
+char *strendzap (char *str, const char *pat);
+void lt_fatal (const char *message, ...);
+void lt_setenv (const char *name, const char *value);
+char *lt_extend_str (const char *orig_value, const char *add, int to_end);
+void lt_update_exe_path (const char *name, const char *value);
+void lt_update_lib_path (const char *name, const char *value);
+char **prepare_spawn (char **argv);
+void lt_dump_script (FILE *f);
+EOF
+
+	    cat <<EOF
+const char * MAGIC_EXE = "$magic_exe";
+const char * LIB_PATH_VARNAME = "$shlibpath_var";
+EOF
+
+	    if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+              func_to_host_pathlist "$temp_rpath"
+	      cat <<EOF
+const char * LIB_PATH_VALUE   = "$func_to_host_pathlist_result";
+EOF
+	    else
+	      cat <<"EOF"
+const char * LIB_PATH_VALUE   = "";
+EOF
+	    fi
+
+	    if test -n "$dllsearchpath"; then
+              func_to_host_pathlist "$dllsearchpath:"
+	      cat <<EOF
+const char * EXE_PATH_VARNAME = "PATH";
+const char * EXE_PATH_VALUE   = "$func_to_host_pathlist_result";
+EOF
+	    else
+	      cat <<"EOF"
+const char * EXE_PATH_VARNAME = "";
+const char * EXE_PATH_VALUE   = "";
+EOF
+	    fi
+
+	    if test "$fast_install" = yes; then
+	      cat <<EOF
+const char * TARGET_PROGRAM_NAME = "lt-$outputname"; /* hopefully, no .exe */
+EOF
+	    else
+	      cat <<EOF
+const char * TARGET_PROGRAM_NAME = "$outputname"; /* hopefully, no .exe */
+EOF
+	    fi
+
+
+	    cat <<"EOF"
+
+#define LTWRAPPER_OPTION_PREFIX         "--lt-"
+#define LTWRAPPER_OPTION_PREFIX_LENGTH  5
+
+static const size_t opt_prefix_len         = LTWRAPPER_OPTION_PREFIX_LENGTH;
+static const char *ltwrapper_option_prefix = LTWRAPPER_OPTION_PREFIX;
+
+static const char *dumpscript_opt       = LTWRAPPER_OPTION_PREFIX "dump-script";
+
+int
+main (int argc, char *argv[])
+{
+  char **newargz;
+  int  newargc;
+  char *tmp_pathspec;
+  char *actual_cwrapper_path;
+  char *actual_cwrapper_name;
+  char *target_name;
+  char *lt_argv_zero;
+  intptr_t rval = 127;
+
+  int i;
+
+  program_name = (char *) xstrdup (base_name (argv[0]));
+  LTWRAPPER_DEBUGPRINTF (("(main) argv[0]      : %s\n", argv[0]));
+  LTWRAPPER_DEBUGPRINTF (("(main) program_name : %s\n", program_name));
+
+  /* very simple arg parsing; don't want to rely on getopt */
+  for (i = 1; i < argc; i++)
+    {
+      if (strcmp (argv[i], dumpscript_opt) == 0)
+	{
+EOF
+	    case "$host" in
+	      *mingw* | *cygwin* )
+		# make stdout use "unix" line endings
+		echo "          setmode(1,_O_BINARY);"
+		;;
+	      esac
+
+	    cat <<"EOF"
+	  lt_dump_script (stdout);
+	  return 0;
+	}
+    }
+
+  newargz = XMALLOC (char *, argc + 1);
+  tmp_pathspec = find_executable (argv[0]);
+  if (tmp_pathspec == NULL)
+    lt_fatal ("Couldn't find %s", argv[0]);
+  LTWRAPPER_DEBUGPRINTF (("(main) found exe (before symlink chase) at : %s\n",
+			  tmp_pathspec));
+
+  actual_cwrapper_path = chase_symlinks (tmp_pathspec);
+  LTWRAPPER_DEBUGPRINTF (("(main) found exe (after symlink chase) at : %s\n",
+			  actual_cwrapper_path));
+  XFREE (tmp_pathspec);
+
+  actual_cwrapper_name = xstrdup( base_name (actual_cwrapper_path));
+  strendzap (actual_cwrapper_path, actual_cwrapper_name);
+
+  /* wrapper name transforms */
+  strendzap (actual_cwrapper_name, ".exe");
+  tmp_pathspec = lt_extend_str (actual_cwrapper_name, ".exe", 1);
+  XFREE (actual_cwrapper_name);
+  actual_cwrapper_name = tmp_pathspec;
+  tmp_pathspec = 0;
+
+  /* target_name transforms -- use actual target program name; might have lt- prefix */
+  target_name = xstrdup (base_name (TARGET_PROGRAM_NAME));
+  strendzap (target_name, ".exe");
+  tmp_pathspec = lt_extend_str (target_name, ".exe", 1);
+  XFREE (target_name);
+  target_name = tmp_pathspec;
+  tmp_pathspec = 0;
+
+  LTWRAPPER_DEBUGPRINTF (("(main) libtool target name: %s\n",
+			  target_name));
+EOF
+
+	    cat <<EOF
+  newargz[0] =
+    XMALLOC (char, (strlen (actual_cwrapper_path) +
+		    strlen ("$objdir") + 1 + strlen (actual_cwrapper_name) + 1));
+  strcpy (newargz[0], actual_cwrapper_path);
+  strcat (newargz[0], "$objdir");
+  strcat (newargz[0], "/");
+EOF
+
+	    cat <<"EOF"
+  /* stop here, and copy so we don't have to do this twice */
+  tmp_pathspec = xstrdup (newargz[0]);
+
+  /* do NOT want the lt- prefix here, so use actual_cwrapper_name */
+  strcat (newargz[0], actual_cwrapper_name);
+
+  /* DO want the lt- prefix here if it exists, so use target_name */
+  lt_argv_zero = lt_extend_str (tmp_pathspec, target_name, 1);
+  XFREE (tmp_pathspec);
+  tmp_pathspec = NULL;
+EOF
+
+	    case $host_os in
+	      mingw*)
+	    cat <<"EOF"
+  {
+    char* p;
+    while ((p = strchr (newargz[0], '\\')) != NULL)
+      {
+	*p = '/';
+      }
+    while ((p = strchr (lt_argv_zero, '\\')) != NULL)
+      {
+	*p = '/';
+      }
+  }
+EOF
+	    ;;
+	    esac
+
+	    cat <<"EOF"
+  XFREE (target_name);
+  XFREE (actual_cwrapper_path);
+  XFREE (actual_cwrapper_name);
+
+  lt_setenv ("BIN_SH", "xpg4"); /* for Tru64 */
+  lt_setenv ("DUALCASE", "1");  /* for MSK sh */
+  lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
+  lt_update_exe_path (EXE_PATH_VARNAME, EXE_PATH_VALUE);
+
+  newargc=0;
+  for (i = 1; i < argc; i++)
+    {
+      if (strncmp (argv[i], ltwrapper_option_prefix, opt_prefix_len) == 0)
+        {
+          /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX
+             namespace, but it is not one of the ones we know about and
+             have already dealt with, above (inluding dump-script), then
+             report an error. Otherwise, targets might begin to believe
+             they are allowed to use options in the LTWRAPPER_OPTION_PREFIX
+             namespace. The first time any user complains about this, we'll
+             need to make LTWRAPPER_OPTION_PREFIX a configure-time option
+             or a configure.ac-settable value.
+           */
+          lt_fatal ("Unrecognized option in %s namespace: '%s'",
+                    ltwrapper_option_prefix, argv[i]);
+        }
+      /* otherwise ... */
+      newargz[++newargc] = xstrdup (argv[i]);
+    }
+  newargz[++newargc] = NULL;
+
+  LTWRAPPER_DEBUGPRINTF     (("(main) lt_argv_zero : %s\n", (lt_argv_zero ? lt_argv_zero : "<NULL>")));
+  for (i = 0; i < newargc; i++)
+    {
+      LTWRAPPER_DEBUGPRINTF (("(main) newargz[%d]   : %s\n", i, (newargz[i] ? newargz[i] : "<NULL>")));
+    }
+
+EOF
+
+	    case $host_os in
+	      mingw*)
+		cat <<"EOF"
+  /* execv doesn't actually work on mingw as expected on unix */
+  newargz = prepare_spawn (newargz);
+  rval = _spawnv (_P_WAIT, lt_argv_zero, (const char * const *) newargz);
+  if (rval == -1)
+    {
+      /* failed to start process */
+      LTWRAPPER_DEBUGPRINTF (("(main) failed to launch target \"%s\": errno = %d\n", lt_argv_zero, errno));
+      return 127;
+    }
+  return rval;
+EOF
+		;;
+	      *)
+		cat <<"EOF"
+  execv (lt_argv_zero, newargz);
+  return rval; /* =127, but avoids unused variable warning */
+EOF
+		;;
+	    esac
+
+	    cat <<"EOF"
+}
+
+void *
+xmalloc (size_t num)
+{
+  void *p = (void *) malloc (num);
+  if (!p)
+    lt_fatal ("Memory exhausted");
+
+  return p;
+}
+
+char *
+xstrdup (const char *string)
+{
+  return string ? strcpy ((char *) xmalloc (strlen (string) + 1),
+			  string) : NULL;
+}
+
+const char *
+base_name (const char *name)
+{
+  const char *base;
+
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+  /* Skip over the disk name in MSDOS pathnames. */
+  if (isalpha ((unsigned char) name[0]) && name[1] == ':')
+    name += 2;
+#endif
+
+  for (base = name; *name; name++)
+    if (IS_DIR_SEPARATOR (*name))
+      base = name + 1;
+  return base;
+}
+
+int
+check_executable (const char *path)
+{
+  struct stat st;
+
+  LTWRAPPER_DEBUGPRINTF (("(check_executable)  : %s\n",
+			  path ? (*path ? path : "EMPTY!") : "NULL!"));
+  if ((!path) || (!*path))
+    return 0;
+
+  if ((stat (path, &st) >= 0)
+      && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
+    return 1;
+  else
+    return 0;
+}
+
+int
+make_executable (const char *path)
+{
+  int rval = 0;
+  struct stat st;
+
+  LTWRAPPER_DEBUGPRINTF (("(make_executable)   : %s\n",
+			  path ? (*path ? path : "EMPTY!") : "NULL!"));
+  if ((!path) || (!*path))
+    return 0;
+
+  if (stat (path, &st) >= 0)
+    {
+      rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR);
+    }
+  return rval;
+}
+
+/* Searches for the full path of the wrapper.  Returns
+   newly allocated full path name if found, NULL otherwise
+   Does not chase symlinks, even on platforms that support them.
+*/
+char *
+find_executable (const char *wrapper)
+{
+  int has_slash = 0;
+  const char *p;
+  const char *p_next;
+  /* static buffer for getcwd */
+  char tmp[LT_PATHMAX + 1];
+  int tmp_len;
+  char *concat_name;
+
+  LTWRAPPER_DEBUGPRINTF (("(find_executable)   : %s\n",
+			  wrapper ? (*wrapper ? wrapper : "EMPTY!") : "NULL!"));
+
+  if ((wrapper == NULL) || (*wrapper == '\0'))
+    return NULL;
+
+  /* Absolute path? */
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+  if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':')
+    {
+      concat_name = xstrdup (wrapper);
+      if (check_executable (concat_name))
+	return concat_name;
+      XFREE (concat_name);
+    }
+  else
+    {
+#endif
+      if (IS_DIR_SEPARATOR (wrapper[0]))
+	{
+	  concat_name = xstrdup (wrapper);
+	  if (check_executable (concat_name))
+	    return concat_name;
+	  XFREE (concat_name);
+	}
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+    }
+#endif
+
+  for (p = wrapper; *p; p++)
+    if (*p == '/')
+      {
+	has_slash = 1;
+	break;
+      }
+  if (!has_slash)
+    {
+      /* no slashes; search PATH */
+      const char *path = getenv ("PATH");
+      if (path != NULL)
+	{
+	  for (p = path; *p; p = p_next)
+	    {
+	      const char *q;
+	      size_t p_len;
+	      for (q = p; *q; q++)
+		if (IS_PATH_SEPARATOR (*q))
+		  break;
+	      p_len = q - p;
+	      p_next = (*q == '\0' ? q : q + 1);
+	      if (p_len == 0)
+		{
+		  /* empty path: current directory */
+		  if (getcwd (tmp, LT_PATHMAX) == NULL)
+		    lt_fatal ("getcwd failed");
+		  tmp_len = strlen (tmp);
+		  concat_name =
+		    XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+		  memcpy (concat_name, tmp, tmp_len);
+		  concat_name[tmp_len] = '/';
+		  strcpy (concat_name + tmp_len + 1, wrapper);
+		}
+	      else
+		{
+		  concat_name =
+		    XMALLOC (char, p_len + 1 + strlen (wrapper) + 1);
+		  memcpy (concat_name, p, p_len);
+		  concat_name[p_len] = '/';
+		  strcpy (concat_name + p_len + 1, wrapper);
+		}
+	      if (check_executable (concat_name))
+		return concat_name;
+	      XFREE (concat_name);
+	    }
+	}
+      /* not found in PATH; assume curdir */
+    }
+  /* Relative path | not found in path: prepend cwd */
+  if (getcwd (tmp, LT_PATHMAX) == NULL)
+    lt_fatal ("getcwd failed");
+  tmp_len = strlen (tmp);
+  concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+  memcpy (concat_name, tmp, tmp_len);
+  concat_name[tmp_len] = '/';
+  strcpy (concat_name + tmp_len + 1, wrapper);
+
+  if (check_executable (concat_name))
+    return concat_name;
+  XFREE (concat_name);
+  return NULL;
+}
+
+char *
+chase_symlinks (const char *pathspec)
+{
+#ifndef S_ISLNK
+  return xstrdup (pathspec);
+#else
+  char buf[LT_PATHMAX];
+  struct stat s;
+  char *tmp_pathspec = xstrdup (pathspec);
+  char *p;
+  int has_symlinks = 0;
+  while (strlen (tmp_pathspec) && !has_symlinks)
+    {
+      LTWRAPPER_DEBUGPRINTF (("checking path component for symlinks: %s\n",
+			      tmp_pathspec));
+      if (lstat (tmp_pathspec, &s) == 0)
+	{
+	  if (S_ISLNK (s.st_mode) != 0)
+	    {
+	      has_symlinks = 1;
+	      break;
+	    }
+
+	  /* search backwards for last DIR_SEPARATOR */
+	  p = tmp_pathspec + strlen (tmp_pathspec) - 1;
+	  while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+	    p--;
+	  if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+	    {
+	      /* no more DIR_SEPARATORS left */
+	      break;
+	    }
+	  *p = '\0';
+	}
+      else
+	{
+	  char *errstr = strerror (errno);
+	  lt_fatal ("Error accessing file %s (%s)", tmp_pathspec, errstr);
+	}
+    }
+  XFREE (tmp_pathspec);
+
+  if (!has_symlinks)
+    {
+      return xstrdup (pathspec);
+    }
+
+  tmp_pathspec = realpath (pathspec, buf);
+  if (tmp_pathspec == 0)
+    {
+      lt_fatal ("Could not follow symlinks for %s", pathspec);
+    }
+  return xstrdup (tmp_pathspec);
+#endif
+}
+
+char *
+strendzap (char *str, const char *pat)
+{
+  size_t len, patlen;
+
+  assert (str != NULL);
+  assert (pat != NULL);
+
+  len = strlen (str);
+  patlen = strlen (pat);
+
+  if (patlen <= len)
+    {
+      str += len - patlen;
+      if (strcmp (str, pat) == 0)
+	*str = '\0';
+    }
+  return str;
+}
+
+static void
+lt_error_core (int exit_status, const char *mode,
+	       const char *message, va_list ap)
+{
+  fprintf (stderr, "%s: %s: ", program_name, mode);
+  vfprintf (stderr, message, ap);
+  fprintf (stderr, ".\n");
+
+  if (exit_status >= 0)
+    exit (exit_status);
+}
+
+void
+lt_fatal (const char *message, ...)
+{
+  va_list ap;
+  va_start (ap, message);
+  lt_error_core (EXIT_FAILURE, "FATAL", message, ap);
+  va_end (ap);
+}
+
+void
+lt_setenv (const char *name, const char *value)
+{
+  LTWRAPPER_DEBUGPRINTF (("(lt_setenv) setting '%s' to '%s'\n",
+                          (name ? name : "<NULL>"),
+                          (value ? value : "<NULL>")));
+  {
+#ifdef HAVE_SETENV
+    /* always make a copy, for consistency with !HAVE_SETENV */
+    char *str = xstrdup (value);
+    setenv (name, str, 1);
+#else
+    int len = strlen (name) + 1 + strlen (value) + 1;
+    char *str = XMALLOC (char, len);
+    sprintf (str, "%s=%s", name, value);
+    if (putenv (str) != EXIT_SUCCESS)
+      {
+        XFREE (str);
+      }
+#endif
+  }
+}
+
+char *
+lt_extend_str (const char *orig_value, const char *add, int to_end)
+{
+  char *new_value;
+  if (orig_value && *orig_value)
+    {
+      int orig_value_len = strlen (orig_value);
+      int add_len = strlen (add);
+      new_value = XMALLOC (char, add_len + orig_value_len + 1);
+      if (to_end)
+        {
+          strcpy (new_value, orig_value);
+          strcpy (new_value + orig_value_len, add);
+        }
+      else
+        {
+          strcpy (new_value, add);
+          strcpy (new_value + add_len, orig_value);
+        }
+    }
+  else
+    {
+      new_value = xstrdup (add);
+    }
+  return new_value;
+}
+
+void
+lt_update_exe_path (const char *name, const char *value)
+{
+  LTWRAPPER_DEBUGPRINTF (("(lt_update_exe_path) modifying '%s' by prepending '%s'\n",
+                          (name ? name : "<NULL>"),
+                          (value ? value : "<NULL>")));
+
+  if (name && *name && value && *value)
+    {
+      char *new_value = lt_extend_str (getenv (name), value, 0);
+      /* some systems can't cope with a ':'-terminated path #' */
+      int len = strlen (new_value);
+      while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1]))
+        {
+          new_value[len-1] = '\0';
+        }
+      lt_setenv (name, new_value);
+      XFREE (new_value);
+    }
+}
+
+void
+lt_update_lib_path (const char *name, const char *value)
+{
+  LTWRAPPER_DEBUGPRINTF (("(lt_update_lib_path) modifying '%s' by prepending '%s'\n",
+                          (name ? name : "<NULL>"),
+                          (value ? value : "<NULL>")));
+
+  if (name && *name && value && *value)
+    {
+      char *new_value = lt_extend_str (getenv (name), value, 0);
+      lt_setenv (name, new_value);
+      XFREE (new_value);
+    }
+}
+
+EOF
+	    case $host_os in
+	      mingw*)
+		cat <<"EOF"
+
+/* Prepares an argument vector before calling spawn().
+   Note that spawn() does not by itself call the command interpreter
+     (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") :
+      ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+         GetVersionEx(&v);
+         v.dwPlatformId == VER_PLATFORM_WIN32_NT;
+      }) ? "cmd.exe" : "command.com").
+   Instead it simply concatenates the arguments, separated by ' ', and calls
+   CreateProcess().  We must quote the arguments since Win32 CreateProcess()
+   interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a
+   special way:
+   - Space and tab are interpreted as delimiters. They are not treated as
+     delimiters if they are surrounded by double quotes: "...".
+   - Unescaped double quotes are removed from the input. Their only effect is
+     that within double quotes, space and tab are treated like normal
+     characters.
+   - Backslashes not followed by double quotes are not special.
+   - But 2*n+1 backslashes followed by a double quote become
+     n backslashes followed by a double quote (n >= 0):
+       \" -> "
+       \\\" -> \"
+       \\\\\" -> \\"
+ */
+#define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
+#define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
+char **
+prepare_spawn (char **argv)
+{
+  size_t argc;
+  char **new_argv;
+  size_t i;
+
+  /* Count number of arguments.  */
+  for (argc = 0; argv[argc] != NULL; argc++)
+    ;
+
+  /* Allocate new argument vector.  */
+  new_argv = XMALLOC (char *, argc + 1);
+
+  /* Put quoted arguments into the new argument vector.  */
+  for (i = 0; i < argc; i++)
+    {
+      const char *string = argv[i];
+
+      if (string[0] == '\0')
+	new_argv[i] = xstrdup ("\"\"");
+      else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL)
+	{
+	  int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL);
+	  size_t length;
+	  unsigned int backslashes;
+	  const char *s;
+	  char *quoted_string;
+	  char *p;
+
+	  length = 0;
+	  backslashes = 0;
+	  if (quote_around)
+	    length++;
+	  for (s = string; *s != '\0'; s++)
+	    {
+	      char c = *s;
+	      if (c == '"')
+		length += backslashes + 1;
+	      length++;
+	      if (c == '\\')
+		backslashes++;
+	      else
+		backslashes = 0;
+	    }
+	  if (quote_around)
+	    length += backslashes + 1;
+
+	  quoted_string = XMALLOC (char, length + 1);
+
+	  p = quoted_string;
+	  backslashes = 0;
+	  if (quote_around)
+	    *p++ = '"';
+	  for (s = string; *s != '\0'; s++)
+	    {
+	      char c = *s;
+	      if (c == '"')
+		{
+		  unsigned int j;
+		  for (j = backslashes + 1; j > 0; j--)
+		    *p++ = '\\';
+		}
+	      *p++ = c;
+	      if (c == '\\')
+		backslashes++;
+	      else
+		backslashes = 0;
+	    }
+	  if (quote_around)
+	    {
+	      unsigned int j;
+	      for (j = backslashes; j > 0; j--)
+		*p++ = '\\';
+	      *p++ = '"';
+	    }
+	  *p = '\0';
+
+	  new_argv[i] = quoted_string;
+	}
+      else
+	new_argv[i] = (char *) string;
+    }
+  new_argv[argc] = NULL;
+
+  return new_argv;
+}
+EOF
+		;;
+	    esac
+
+            cat <<"EOF"
+void lt_dump_script (FILE* f)
+{
+EOF
+	    func_emit_wrapper yes |
+              $SED -e 's/\([\\"]\)/\\\1/g' \
+	           -e 's/^/  fputs ("/' -e 's/$/\\n", f);/'
+
+            cat <<"EOF"
+}
+EOF
+}
+# end: func_emit_cwrapperexe_src
+
+# func_win32_import_lib_p ARG
+# True if ARG is an import lib, as indicated by $file_magic_cmd
+func_win32_import_lib_p ()
+{
+    $opt_debug
+    case `eval "$file_magic_cmd \"\$1\" 2>/dev/null" | $SED -e 10q` in
+    *import*) : ;;
+    *) false ;;
+    esac
+}
+
+# func_mode_link arg...
+func_mode_link ()
+{
+    $opt_debug
+    case $host in
+    *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+      # It is impossible to link a dll without this setting, and
+      # we shouldn't force the makefile maintainer to figure out
+      # which system we are compiling for in order to pass an extra
+      # flag for every libtool invocation.
+      # allow_undefined=no
+
+      # FIXME: Unfortunately, there are problems with the above when trying
+      # to make a dll which has undefined symbols, in which case not
+      # even a static library is built.  For now, we need to specify
+      # -no-undefined on the libtool link line when we can be certain
+      # that all symbols are satisfied, otherwise we get a static library.
+      allow_undefined=yes
+      ;;
+    *)
+      allow_undefined=yes
+      ;;
+    esac
+    libtool_args=$nonopt
+    base_compile="$nonopt $@"
+    compile_command=$nonopt
+    finalize_command=$nonopt
+
+    compile_rpath=
+    finalize_rpath=
+    compile_shlibpath=
+    finalize_shlibpath=
+    convenience=
+    old_convenience=
+    deplibs=
+    old_deplibs=
+    compiler_flags=
+    linker_flags=
+    dllsearchpath=
+    lib_search_path=`pwd`
+    inst_prefix_dir=
+    new_inherited_linker_flags=
+
+    avoid_version=no
+    bindir=
+    dlfiles=
+    dlprefiles=
+    dlself=no
+    export_dynamic=no
+    export_symbols=
+    export_symbols_regex=
+    generated=
+    libobjs=
+    ltlibs=
+    module=no
+    no_install=no
+    objs=
+    non_pic_objects=
+    precious_files_regex=
+    prefer_static_libs=no
+    preload=no
+    prev=
+    prevarg=
+    release=
+    rpath=
+    xrpath=
+    perm_rpath=
+    temp_rpath=
+    thread_safe=no
+    vinfo=
+    vinfo_number=no
+    weak_libs=
+    single_module="${wl}-single_module"
+    func_infer_tag $base_compile
+
+    # We need to know -static, to get the right output filenames.
+    for arg
+    do
+      case $arg in
+      -shared)
+	test "$build_libtool_libs" != yes && \
+	  func_fatal_configuration "can not build a shared library"
+	build_old_libs=no
+	break
+	;;
+      -all-static | -static | -static-libtool-libs)
+	case $arg in
+	-all-static)
+	  if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
+	    func_warning "complete static linking is impossible in this configuration"
+	  fi
+	  if test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=yes
+	  ;;
+	-static)
+	  if test -z "$pic_flag" && test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=built
+	  ;;
+	-static-libtool-libs)
+	  if test -z "$pic_flag" && test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=yes
+	  ;;
+	esac
+	build_libtool_libs=no
+	build_old_libs=yes
+	break
+	;;
+      esac
+    done
+
+    # See if our shared archives depend on static archives.
+    test -n "$old_archive_from_new_cmds" && build_old_libs=yes
+
+    # Go through the arguments, transforming them on the way.
+    while test "$#" -gt 0; do
+      arg="$1"
+      shift
+      func_quote_for_eval "$arg"
+      qarg=$func_quote_for_eval_unquoted_result
+      func_append libtool_args " $func_quote_for_eval_result"
+
+      # If the previous option needs an argument, assign it.
+      if test -n "$prev"; then
+	case $prev in
+	output)
+	  func_append compile_command " @OUTPUT@"
+	  func_append finalize_command " @OUTPUT@"
+	  ;;
+	esac
+
+	case $prev in
+	bindir)
+	  bindir="$arg"
+	  prev=
+	  continue
+	  ;;
+	dlfiles|dlprefiles)
+	  if test "$preload" = no; then
+	    # Add the symbol object into the linking commands.
+	    func_append compile_command " @SYMFILE@"
+	    func_append finalize_command " @SYMFILE@"
+	    preload=yes
+	  fi
+	  case $arg in
+	  *.la | *.lo) ;;  # We handle these cases below.
+	  force)
+	    if test "$dlself" = no; then
+	      dlself=needless
+	      export_dynamic=yes
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  self)
+	    if test "$prev" = dlprefiles; then
+	      dlself=yes
+	    elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
+	      dlself=yes
+	    else
+	      dlself=needless
+	      export_dynamic=yes
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  *)
+	    if test "$prev" = dlfiles; then
+	      dlfiles="$dlfiles $arg"
+	    else
+	      dlprefiles="$dlprefiles $arg"
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  esac
+	  ;;
+	expsyms)
+	  export_symbols="$arg"
+	  test -f "$arg" \
+	    || func_fatal_error "symbol file \`$arg' does not exist"
+	  prev=
+	  continue
+	  ;;
+	expsyms_regex)
+	  export_symbols_regex="$arg"
+	  prev=
+	  continue
+	  ;;
+	framework)
+	  case $host in
+	    *-*-darwin*)
+	      case "$deplibs " in
+		*" $qarg.ltframework "*) ;;
+		*) deplibs="$deplibs $qarg.ltframework" # this is fixed later
+		   ;;
+	      esac
+	      ;;
+	  esac
+	  prev=
+	  continue
+	  ;;
+	inst_prefix)
+	  inst_prefix_dir="$arg"
+	  prev=
+	  continue
+	  ;;
+	objectlist)
+	  if test -f "$arg"; then
+	    save_arg=$arg
+	    moreargs=
+	    for fil in `cat "$save_arg"`
+	    do
+#	      moreargs="$moreargs $fil"
+	      arg=$fil
+	      # A libtool-controlled object.
+
+	      # Check to see that this really is a libtool object.
+	      if func_lalib_unsafe_p "$arg"; then
+		pic_object=
+		non_pic_object=
+
+		# Read the .lo file
+		func_source "$arg"
+
+		if test -z "$pic_object" ||
+		   test -z "$non_pic_object" ||
+		   test "$pic_object" = none &&
+		   test "$non_pic_object" = none; then
+		  func_fatal_error "cannot find name of object for \`$arg'"
+		fi
+
+		# Extract subdirectory from the argument.
+		func_dirname "$arg" "/" ""
+		xdir="$func_dirname_result"
+
+		if test "$pic_object" != none; then
+		  # Prepend the subdirectory the object is found in.
+		  pic_object="$xdir$pic_object"
+
+		  if test "$prev" = dlfiles; then
+		    if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+		      dlfiles="$dlfiles $pic_object"
+		      prev=
+		      continue
+		    else
+		      # If libtool objects are unsupported, then we need to preload.
+		      prev=dlprefiles
+		    fi
+		  fi
+
+		  # CHECK ME:  I think I busted this.  -Ossama
+		  if test "$prev" = dlprefiles; then
+		    # Preload the old-style object.
+		    dlprefiles="$dlprefiles $pic_object"
+		    prev=
+		  fi
+
+		  # A PIC object.
+		  func_append libobjs " $pic_object"
+		  arg="$pic_object"
+		fi
+
+		# Non-PIC object.
+		if test "$non_pic_object" != none; then
+		  # Prepend the subdirectory the object is found in.
+		  non_pic_object="$xdir$non_pic_object"
+
+		  # A standard non-PIC object
+		  func_append non_pic_objects " $non_pic_object"
+		  if test -z "$pic_object" || test "$pic_object" = none ; then
+		    arg="$non_pic_object"
+		  fi
+		else
+		  # If the PIC object exists, use it instead.
+		  # $xdir was prepended to $pic_object above.
+		  non_pic_object="$pic_object"
+		  func_append non_pic_objects " $non_pic_object"
+		fi
+	      else
+		# Only an error if not doing a dry-run.
+		if $opt_dry_run; then
+		  # Extract subdirectory from the argument.
+		  func_dirname "$arg" "/" ""
+		  xdir="$func_dirname_result"
+
+		  func_lo2o "$arg"
+		  pic_object=$xdir$objdir/$func_lo2o_result
+		  non_pic_object=$xdir$func_lo2o_result
+		  func_append libobjs " $pic_object"
+		  func_append non_pic_objects " $non_pic_object"
+	        else
+		  func_fatal_error "\`$arg' is not a valid libtool object"
+		fi
+	      fi
+	    done
+	  else
+	    func_fatal_error "link input file \`$arg' does not exist"
+	  fi
+	  arg=$save_arg
+	  prev=
+	  continue
+	  ;;
+	precious_regex)
+	  precious_files_regex="$arg"
+	  prev=
+	  continue
+	  ;;
+	release)
+	  release="-$arg"
+	  prev=
+	  continue
+	  ;;
+	rpath | xrpath)
+	  # We need an absolute path.
+	  case $arg in
+	  [\\/]* | [A-Za-z]:[\\/]*) ;;
+	  *)
+	    func_fatal_error "only absolute run-paths are allowed"
+	    ;;
+	  esac
+	  if test "$prev" = rpath; then
+	    case "$rpath " in
+	    *" $arg "*) ;;
+	    *) rpath="$rpath $arg" ;;
+	    esac
+	  else
+	    case "$xrpath " in
+	    *" $arg "*) ;;
+	    *) xrpath="$xrpath $arg" ;;
+	    esac
+	  fi
+	  prev=
+	  continue
+	  ;;
+	shrext)
+	  shrext_cmds="$arg"
+	  prev=
+	  continue
+	  ;;
+	weak)
+	  weak_libs="$weak_libs $arg"
+	  prev=
+	  continue
+	  ;;
+	xcclinker)
+	  linker_flags="$linker_flags $qarg"
+	  compiler_flags="$compiler_flags $qarg"
+	  prev=
+	  func_append compile_command " $qarg"
+	  func_append finalize_command " $qarg"
+	  continue
+	  ;;
+	xcompiler)
+	  compiler_flags="$compiler_flags $qarg"
+	  prev=
+	  func_append compile_command " $qarg"
+	  func_append finalize_command " $qarg"
+	  continue
+	  ;;
+	xlinker)
+	  linker_flags="$linker_flags $qarg"
+	  compiler_flags="$compiler_flags $wl$qarg"
+	  prev=
+	  func_append compile_command " $wl$qarg"
+	  func_append finalize_command " $wl$qarg"
+	  continue
+	  ;;
+	*)
+	  eval "$prev=\"\$arg\""
+	  prev=
+	  continue
+	  ;;
+	esac
+      fi # test -n "$prev"
+
+      prevarg="$arg"
+
+      case $arg in
+      -all-static)
+	if test -n "$link_static_flag"; then
+	  # See comment for -static flag below, for more details.
+	  func_append compile_command " $link_static_flag"
+	  func_append finalize_command " $link_static_flag"
+	fi
+	continue
+	;;
+
+      -allow-undefined)
+	# FIXME: remove this flag sometime in the future.
+	func_fatal_error "\`-allow-undefined' must not be used because it is the default"
+	;;
+
+      -avoid-version)
+	avoid_version=yes
+	continue
+	;;
+
+      -bindir)
+	prev=bindir
+	continue
+	;;
+
+      -dlopen)
+	prev=dlfiles
+	continue
+	;;
+
+      -dlpreopen)
+	prev=dlprefiles
+	continue
+	;;
+
+      -export-dynamic)
+	export_dynamic=yes
+	continue
+	;;
+
+      -export-symbols | -export-symbols-regex)
+	if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
+	  func_fatal_error "more than one -exported-symbols argument is not allowed"
+	fi
+	if test "X$arg" = "X-export-symbols"; then
+	  prev=expsyms
+	else
+	  prev=expsyms_regex
+	fi
+	continue
+	;;
+
+      -framework)
+	prev=framework
+	continue
+	;;
+
+      -inst-prefix-dir)
+	prev=inst_prefix
+	continue
+	;;
+
+      # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
+      # so, if we see these flags be careful not to treat them like -L
+      -L[A-Z][A-Z]*:*)
+	case $with_gcc/$host in
+	no/*-*-irix* | /*-*-irix*)
+	  func_append compile_command " $arg"
+	  func_append finalize_command " $arg"
+	  ;;
+	esac
+	continue
+	;;
+
+      -L*)
+	func_stripname '-L' '' "$arg"
+	dir=$func_stripname_result
+	if test -z "$dir"; then
+	  if test "$#" -gt 0; then
+	    func_fatal_error "require no space between \`-L' and \`$1'"
+	  else
+	    func_fatal_error "need path for \`-L' option"
+	  fi
+	fi
+	# We need an absolute path.
+	case $dir in
+	[\\/]* | [A-Za-z]:[\\/]*) ;;
+	*)
+	  absdir=`cd "$dir" && pwd`
+	  test -z "$absdir" && \
+	    func_fatal_error "cannot determine absolute directory name of \`$dir'"
+	  dir="$absdir"
+	  ;;
+	esac
+	case "$deplibs " in
+	*" -L$dir "*) ;;
+	*)
+	  deplibs="$deplibs -L$dir"
+	  lib_search_path="$lib_search_path $dir"
+	  ;;
+	esac
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	  testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'`
+	  case :$dllsearchpath: in
+	  *":$dir:"*) ;;
+	  ::) dllsearchpath=$dir;;
+	  *) dllsearchpath="$dllsearchpath:$dir";;
+	  esac
+	  case :$dllsearchpath: in
+	  *":$testbindir:"*) ;;
+	  ::) dllsearchpath=$testbindir;;
+	  *) dllsearchpath="$dllsearchpath:$testbindir";;
+	  esac
+	  ;;
+	esac
+	continue
+	;;
+
+      -l*)
+	if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
+	  case $host in
+	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	    # These systems don't actually have a C or math library (as such)
+	    continue
+	    ;;
+	  *-*-os2*)
+	    # These systems don't actually have a C library (as such)
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	    # Do not include libc due to us having libc/libc_r.
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-rhapsody* | *-*-darwin1.[012])
+	    # Rhapsody C and math libraries are in the System framework
+	    deplibs="$deplibs System.ltframework"
+	    continue
+	    ;;
+	  *-*-sco3.2v5* | *-*-sco5v6*)
+	    # Causes problems with __ctype
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+	    # Compiler inserts libc in the correct place for threads to work
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-linux*)
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  esac
+	elif test "X$arg" = "X-lc_r"; then
+	 case $host in
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	   # Do not include libc_r directly, use -pthread flag.
+	   continue
+	   ;;
+	 esac
+	fi
+	deplibs="$deplibs $arg"
+	continue
+	;;
+
+      -module)
+	module=yes
+	continue
+	;;
+
+      # Tru64 UNIX uses -model [arg] to determine the layout of C++
+      # classes, name mangling, and exception handling.
+      # Darwin uses the -arch flag to determine output architecture.
+      -model|-arch|-isysroot)
+	compiler_flags="$compiler_flags $arg"
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+	prev=xcompiler
+	continue
+	;;
+
+      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+	compiler_flags="$compiler_flags $arg"
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+	case "$new_inherited_linker_flags " in
+	    *" $arg "*) ;;
+	    * ) new_inherited_linker_flags="$new_inherited_linker_flags $arg" ;;
+	esac
+	continue
+	;;
+
+      -multi_module)
+	single_module="${wl}-multi_module"
+	continue
+	;;
+
+      -no-fast-install)
+	fast_install=no
+	continue
+	;;
+
+      -no-install)
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
+	  # The PATH hackery in wrapper scripts is required on Windows
+	  # and Darwin in order for the loader to find any dlls it needs.
+	  func_warning "\`-no-install' is ignored for $host"
+	  func_warning "assuming \`-no-fast-install' instead"
+	  fast_install=no
+	  ;;
+	*) no_install=yes ;;
+	esac
+	continue
+	;;
+
+      -no-undefined)
+	allow_undefined=no
+	continue
+	;;
+
+      -objectlist)
+	prev=objectlist
+	continue
+	;;
+
+      -o) prev=output ;;
+
+      -precious-files-regex)
+	prev=precious_regex
+	continue
+	;;
+
+      -release)
+	prev=release
+	continue
+	;;
+
+      -rpath)
+	prev=rpath
+	continue
+	;;
+
+      -R)
+	prev=xrpath
+	continue
+	;;
+
+      -R*)
+	func_stripname '-R' '' "$arg"
+	dir=$func_stripname_result
+	# We need an absolute path.
+	case $dir in
+	[\\/]* | [A-Za-z]:[\\/]*) ;;
+	*)
+	  func_fatal_error "only absolute run-paths are allowed"
+	  ;;
+	esac
+	case "$xrpath " in
+	*" $dir "*) ;;
+	*) xrpath="$xrpath $dir" ;;
+	esac
+	continue
+	;;
+
+      -shared)
+	# The effects of -shared are defined in a previous loop.
+	continue
+	;;
+
+      -shrext)
+	prev=shrext
+	continue
+	;;
+
+      -static | -static-libtool-libs)
+	# The effects of -static are defined in a previous loop.
+	# We used to do the same as -all-static on platforms that
+	# didn't have a PIC flag, but the assumption that the effects
+	# would be equivalent was wrong.  It would break on at least
+	# Digital Unix and AIX.
+	continue
+	;;
+
+      -thread-safe)
+	thread_safe=yes
+	continue
+	;;
+
+      -version-info)
+	prev=vinfo
+	continue
+	;;
+
+      -version-number)
+	prev=vinfo
+	vinfo_number=yes
+	continue
+	;;
+
+      -weak)
+        prev=weak
+	continue
+	;;
+
+      -Wc,*)
+	func_stripname '-Wc,' '' "$arg"
+	args=$func_stripname_result
+	arg=
+	save_ifs="$IFS"; IFS=','
+	for flag in $args; do
+	  IFS="$save_ifs"
+          func_quote_for_eval "$flag"
+	  arg="$arg $func_quote_for_eval_result"
+	  compiler_flags="$compiler_flags $func_quote_for_eval_result"
+	done
+	IFS="$save_ifs"
+	func_stripname ' ' '' "$arg"
+	arg=$func_stripname_result
+	;;
+
+      -Wl,*)
+	func_stripname '-Wl,' '' "$arg"
+	args=$func_stripname_result
+	arg=
+	save_ifs="$IFS"; IFS=','
+	for flag in $args; do
+	  IFS="$save_ifs"
+          func_quote_for_eval "$flag"
+	  arg="$arg $wl$func_quote_for_eval_result"
+	  compiler_flags="$compiler_flags $wl$func_quote_for_eval_result"
+	  linker_flags="$linker_flags $func_quote_for_eval_result"
+	done
+	IFS="$save_ifs"
+	func_stripname ' ' '' "$arg"
+	arg=$func_stripname_result
+	;;
+
+      -Xcompiler)
+	prev=xcompiler
+	continue
+	;;
+
+      -Xlinker)
+	prev=xlinker
+	continue
+	;;
+
+      -XCClinker)
+	prev=xcclinker
+	continue
+	;;
+
+      # -msg_* for osf cc
+      -msg_*)
+	func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+
+      # -64, -mips[0-9] enable 64-bit mode on the SGI compiler
+      # -r[0-9][0-9]* specifies the processor on the SGI compiler
+      # -xarch=*, -xtarget=* enable 64-bit mode on the Sun compiler
+      # +DA*, +DD* enable 64-bit mode on the HP compiler
+      # -q* pass through compiler args for the IBM compiler
+      # -m*, -t[45]*, -txscale* pass through architecture-specific
+      # compiler args for GCC
+      # -F/path gives path to uninstalled frameworks, gcc on darwin
+      # -p, -pg, --coverage, -fprofile-* pass through profiling flag for GCC
+      # @file GCC response files
+      # -tp=* Portland pgcc target processor selection
+      -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
+      -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*)
+        func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+        func_append compile_command " $arg"
+        func_append finalize_command " $arg"
+        compiler_flags="$compiler_flags $arg"
+        continue
+        ;;
+
+      # Some other compiler flag.
+      -* | +*)
+        func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+
+      *.$objext)
+	# A standard object.
+	objs="$objs $arg"
+	;;
+
+      *.lo)
+	# A libtool-controlled object.
+
+	# Check to see that this really is a libtool object.
+	if func_lalib_unsafe_p "$arg"; then
+	  pic_object=
+	  non_pic_object=
+
+	  # Read the .lo file
+	  func_source "$arg"
+
+	  if test -z "$pic_object" ||
+	     test -z "$non_pic_object" ||
+	     test "$pic_object" = none &&
+	     test "$non_pic_object" = none; then
+	    func_fatal_error "cannot find name of object for \`$arg'"
+	  fi
+
+	  # Extract subdirectory from the argument.
+	  func_dirname "$arg" "/" ""
+	  xdir="$func_dirname_result"
+
+	  if test "$pic_object" != none; then
+	    # Prepend the subdirectory the object is found in.
+	    pic_object="$xdir$pic_object"
+
+	    if test "$prev" = dlfiles; then
+	      if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+		dlfiles="$dlfiles $pic_object"
+		prev=
+		continue
+	      else
+		# If libtool objects are unsupported, then we need to preload.
+		prev=dlprefiles
+	      fi
+	    fi
+
+	    # CHECK ME:  I think I busted this.  -Ossama
+	    if test "$prev" = dlprefiles; then
+	      # Preload the old-style object.
+	      dlprefiles="$dlprefiles $pic_object"
+	      prev=
+	    fi
+
+	    # A PIC object.
+	    func_append libobjs " $pic_object"
+	    arg="$pic_object"
+	  fi
+
+	  # Non-PIC object.
+	  if test "$non_pic_object" != none; then
+	    # Prepend the subdirectory the object is found in.
+	    non_pic_object="$xdir$non_pic_object"
+
+	    # A standard non-PIC object
+	    func_append non_pic_objects " $non_pic_object"
+	    if test -z "$pic_object" || test "$pic_object" = none ; then
+	      arg="$non_pic_object"
+	    fi
+	  else
+	    # If the PIC object exists, use it instead.
+	    # $xdir was prepended to $pic_object above.
+	    non_pic_object="$pic_object"
+	    func_append non_pic_objects " $non_pic_object"
+	  fi
+	else
+	  # Only an error if not doing a dry-run.
+	  if $opt_dry_run; then
+	    # Extract subdirectory from the argument.
+	    func_dirname "$arg" "/" ""
+	    xdir="$func_dirname_result"
+
+	    func_lo2o "$arg"
+	    pic_object=$xdir$objdir/$func_lo2o_result
+	    non_pic_object=$xdir$func_lo2o_result
+	    func_append libobjs " $pic_object"
+	    func_append non_pic_objects " $non_pic_object"
+	  else
+	    func_fatal_error "\`$arg' is not a valid libtool object"
+	  fi
+	fi
+	;;
+
+      *.$libext)
+	# An archive.
+	deplibs="$deplibs $arg"
+	old_deplibs="$old_deplibs $arg"
+	continue
+	;;
+
+      *.la)
+	# A libtool-controlled library.
+
+	if test "$prev" = dlfiles; then
+	  # This library was specified with -dlopen.
+	  dlfiles="$dlfiles $arg"
+	  prev=
+	elif test "$prev" = dlprefiles; then
+	  # The library was specified with -dlpreopen.
+	  dlprefiles="$dlprefiles $arg"
+	  prev=
+	else
+	  deplibs="$deplibs $arg"
+	fi
+	continue
+	;;
+
+      # Some other compiler argument.
+      *)
+	# Unknown arguments in both finalize_command and compile_command need
+	# to be aesthetically quoted because they are evaled later.
+	func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+      esac # arg
+
+      # Now actually substitute the argument into the commands.
+      if test -n "$arg"; then
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+      fi
+    done # argument parsing loop
+
+    test -n "$prev" && \
+      func_fatal_help "the \`$prevarg' option requires an argument"
+
+    if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
+      eval "arg=\"$export_dynamic_flag_spec\""
+      func_append compile_command " $arg"
+      func_append finalize_command " $arg"
+    fi
+
+    oldlibs=
+    # calculate the name of the file, without its directory
+    func_basename "$output"
+    outputname="$func_basename_result"
+    libobjs_save="$libobjs"
+
+    if test -n "$shlibpath_var"; then
+      # get the directories listed in $shlibpath_var
+      eval shlib_search_path=\`\$ECHO \"\${$shlibpath_var}\" \| \$SED \'s/:/ /g\'\`
+    else
+      shlib_search_path=
+    fi
+    eval "sys_lib_search_path=\"$sys_lib_search_path_spec\""
+    eval "sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\""
+
+    func_dirname "$output" "/" ""
+    output_objdir="$func_dirname_result$objdir"
+    # Create the object directory.
+    func_mkdir_p "$output_objdir"
+
+    # Determine the type of output
+    case $output in
+    "")
+      func_fatal_help "you must specify an output file"
+      ;;
+    *.$libext) linkmode=oldlib ;;
+    *.lo | *.$objext) linkmode=obj ;;
+    *.la) linkmode=lib ;;
+    *) linkmode=prog ;; # Anything else should be a program.
+    esac
+
+    specialdeplibs=
+
+    libs=
+    # Find all interdependent deplibs by searching for libraries
+    # that are linked more than once (e.g. -la -lb -la)
+    for deplib in $deplibs; do
+      if $opt_duplicate_deps ; then
+	case "$libs " in
+	*" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+	esac
+      fi
+      libs="$libs $deplib"
+    done
+
+    if test "$linkmode" = lib; then
+      libs="$predeps $libs $compiler_lib_search_path $postdeps"
+
+      # Compute libraries that are listed more than once in $predeps
+      # $postdeps and mark them as special (i.e., whose duplicates are
+      # not to be eliminated).
+      pre_post_deps=
+      if $opt_duplicate_compiler_generated_deps; then
+	for pre_post_dep in $predeps $postdeps; do
+	  case "$pre_post_deps " in
+	  *" $pre_post_dep "*) specialdeplibs="$specialdeplibs $pre_post_deps" ;;
+	  esac
+	  pre_post_deps="$pre_post_deps $pre_post_dep"
+	done
+      fi
+      pre_post_deps=
+    fi
+
+    deplibs=
+    newdependency_libs=
+    newlib_search_path=
+    need_relink=no # whether we're linking any uninstalled libtool libraries
+    notinst_deplibs= # not-installed libtool libraries
+    notinst_path= # paths that contain not-installed libtool libraries
+
+    case $linkmode in
+    lib)
+	passes="conv dlpreopen link"
+	for file in $dlfiles $dlprefiles; do
+	  case $file in
+	  *.la) ;;
+	  *)
+	    func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file"
+	    ;;
+	  esac
+	done
+	;;
+    prog)
+	compile_deplibs=
+	finalize_deplibs=
+	alldeplibs=no
+	newdlfiles=
+	newdlprefiles=
+	passes="conv scan dlopen dlpreopen link"
+	;;
+    *)  passes="conv"
+	;;
+    esac
+
+    for pass in $passes; do
+      # The preopen pass in lib mode reverses $deplibs; put it back here
+      # so that -L comes before libs that need it for instance...
+      if test "$linkmode,$pass" = "lib,link"; then
+	## FIXME: Find the place where the list is rebuilt in the wrong
+	##        order, and fix it there properly
+        tmp_deplibs=
+	for deplib in $deplibs; do
+	  tmp_deplibs="$deplib $tmp_deplibs"
+	done
+	deplibs="$tmp_deplibs"
+      fi
+
+      if test "$linkmode,$pass" = "lib,link" ||
+	 test "$linkmode,$pass" = "prog,scan"; then
+	libs="$deplibs"
+	deplibs=
+      fi
+      if test "$linkmode" = prog; then
+	case $pass in
+	dlopen) libs="$dlfiles" ;;
+	dlpreopen) libs="$dlprefiles" ;;
+	link) libs="$deplibs %DEPLIBS% $dependency_libs" ;;
+	esac
+      fi
+      if test "$linkmode,$pass" = "lib,dlpreopen"; then
+	# Collect and forward deplibs of preopened libtool libs
+	for lib in $dlprefiles; do
+	  # Ignore non-libtool-libs
+	  dependency_libs=
+	  case $lib in
+	  *.la)	func_source "$lib" ;;
+	  esac
+
+	  # Collect preopened libtool deplibs, except any this library
+	  # has declared as weak libs
+	  for deplib in $dependency_libs; do
+	    func_basename "$deplib"
+            deplib_base=$func_basename_result
+	    case " $weak_libs " in
+	    *" $deplib_base "*) ;;
+	    *) deplibs="$deplibs $deplib" ;;
+	    esac
+	  done
+	done
+	libs="$dlprefiles"
+      fi
+      if test "$pass" = dlopen; then
+	# Collect dlpreopened libraries
+	save_deplibs="$deplibs"
+	deplibs=
+      fi
+
+      for deplib in $libs; do
+	lib=
+	found=no
+	case $deplib in
+	-mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+	  if test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$deplib $compile_deplibs"
+	    finalize_deplibs="$deplib $finalize_deplibs"
+	  else
+	    compiler_flags="$compiler_flags $deplib"
+	    if test "$linkmode" = lib ; then
+		case "$new_inherited_linker_flags " in
+		    *" $deplib "*) ;;
+		    * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+		esac
+	    fi
+	  fi
+	  continue
+	  ;;
+	-l*)
+	  if test "$linkmode" != lib && test "$linkmode" != prog; then
+	    func_warning "\`-l' is ignored for archives/objects"
+	    continue
+	  fi
+	  func_stripname '-l' '' "$deplib"
+	  name=$func_stripname_result
+	  if test "$linkmode" = lib; then
+	    searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path"
+	  else
+	    searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path"
+	  fi
+	  for searchdir in $searchdirs; do
+	    for search_ext in .la $std_shrext .so .a; do
+	      # Search the libtool library
+	      lib="$searchdir/lib${name}${search_ext}"
+	      if test -f "$lib"; then
+		if test "$search_ext" = ".la"; then
+		  found=yes
+		else
+		  found=no
+		fi
+		break 2
+	      fi
+	    done
+	  done
+	  if test "$found" != yes; then
+	    # deplib doesn't seem to be a libtool library
+	    if test "$linkmode,$pass" = "prog,link"; then
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    else
+	      deplibs="$deplib $deplibs"
+	      test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+	    fi
+	    continue
+	  else # deplib is a libtool library
+	    # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib,
+	    # We need to do some special things here, and not later.
+	    if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+	      case " $predeps $postdeps " in
+	      *" $deplib "*)
+		if func_lalib_p "$lib"; then
+		  library_names=
+		  old_library=
+		  func_source "$lib"
+		  for l in $old_library $library_names; do
+		    ll="$l"
+		  done
+		  if test "X$ll" = "X$old_library" ; then # only static version available
+		    found=no
+		    func_dirname "$lib" "" "."
+		    ladir="$func_dirname_result"
+		    lib=$ladir/$old_library
+		    if test "$linkmode,$pass" = "prog,link"; then
+		      compile_deplibs="$deplib $compile_deplibs"
+		      finalize_deplibs="$deplib $finalize_deplibs"
+		    else
+		      deplibs="$deplib $deplibs"
+		      test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+		    fi
+		    continue
+		  fi
+		fi
+		;;
+	      *) ;;
+	      esac
+	    fi
+	  fi
+	  ;; # -l
+	*.ltframework)
+	  if test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$deplib $compile_deplibs"
+	    finalize_deplibs="$deplib $finalize_deplibs"
+	  else
+	    deplibs="$deplib $deplibs"
+	    if test "$linkmode" = lib ; then
+		case "$new_inherited_linker_flags " in
+		    *" $deplib "*) ;;
+		    * ) new_inherited_linker_flags="$new_inherited_linker_flags $deplib" ;;
+		esac
+	    fi
+	  fi
+	  continue
+	  ;;
+	-L*)
+	  case $linkmode in
+	  lib)
+	    deplibs="$deplib $deplibs"
+	    test "$pass" = conv && continue
+	    newdependency_libs="$deplib $newdependency_libs"
+	    func_stripname '-L' '' "$deplib"
+	    newlib_search_path="$newlib_search_path $func_stripname_result"
+	    ;;
+	  prog)
+	    if test "$pass" = conv; then
+	      deplibs="$deplib $deplibs"
+	      continue
+	    fi
+	    if test "$pass" = scan; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    fi
+	    func_stripname '-L' '' "$deplib"
+	    newlib_search_path="$newlib_search_path $func_stripname_result"
+	    ;;
+	  *)
+	    func_warning "\`-L' is ignored for archives/objects"
+	    ;;
+	  esac # linkmode
+	  continue
+	  ;; # -L
+	-R*)
+	  if test "$pass" = link; then
+	    func_stripname '-R' '' "$deplib"
+	    dir=$func_stripname_result
+	    # Make sure the xrpath contains only unique directories.
+	    case "$xrpath " in
+	    *" $dir "*) ;;
+	    *) xrpath="$xrpath $dir" ;;
+	    esac
+	  fi
+	  deplibs="$deplib $deplibs"
+	  continue
+	  ;;
+	*.la) lib="$deplib" ;;
+	*.$libext)
+	  if test "$pass" = conv; then
+	    deplibs="$deplib $deplibs"
+	    continue
+	  fi
+	  case $linkmode in
+	  lib)
+	    # Linking convenience modules into shared libraries is allowed,
+	    # but linking other static libraries is non-portable.
+	    case " $dlpreconveniencelibs " in
+	    *" $deplib "*) ;;
+	    *)
+	      valid_a_lib=no
+	      case $deplibs_check_method in
+		match_pattern*)
+		  set dummy $deplibs_check_method; shift
+		  match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+		  if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \
+		    | $EGREP "$match_pattern_regex" > /dev/null; then
+		    valid_a_lib=yes
+		  fi
+		;;
+		pass_all)
+		  valid_a_lib=yes
+		;;
+	      esac
+	      if test "$valid_a_lib" != yes; then
+		echo
+		$ECHO "*** Warning: Trying to link with static lib archive $deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because the file extensions .$libext of this argument makes me believe"
+		echo "*** that it is just a static archive that I should not use here."
+	      else
+		echo
+		$ECHO "*** Warning: Linking the shared library $output against the"
+		$ECHO "*** static library $deplib is not portable!"
+		deplibs="$deplib $deplibs"
+	      fi
+	      ;;
+	    esac
+	    continue
+	    ;;
+	  prog)
+	    if test "$pass" != link; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    fi
+	    continue
+	    ;;
+	  esac # linkmode
+	  ;; # *.$libext
+	*.lo | *.$objext)
+	  if test "$pass" = conv; then
+	    deplibs="$deplib $deplibs"
+	  elif test "$linkmode" = prog; then
+	    if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
+	      # If there is no dlopen support or we're linking statically,
+	      # we need to preload.
+	      newdlprefiles="$newdlprefiles $deplib"
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    else
+	      newdlfiles="$newdlfiles $deplib"
+	    fi
+	  fi
+	  continue
+	  ;;
+	%DEPLIBS%)
+	  alldeplibs=yes
+	  continue
+	  ;;
+	esac # case $deplib
+
+	if test "$found" = yes || test -f "$lib"; then :
+	else
+	  func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'"
+	fi
+
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$lib" \
+	  || func_fatal_error "\`$lib' is not a valid libtool archive"
+
+	func_dirname "$lib" "" "."
+	ladir="$func_dirname_result"
+
+	dlname=
+	dlopen=
+	dlpreopen=
+	libdir=
+	library_names=
+	old_library=
+	inherited_linker_flags=
+	# If the library was installed with an old release of libtool,
+	# it will not redefine variables installed, or shouldnotlink
+	installed=yes
+	shouldnotlink=no
+	avoidtemprpath=
+
+
+	# Read the .la file
+	func_source "$lib"
+
+	# Convert "-framework foo" to "foo.ltframework"
+	if test -n "$inherited_linker_flags"; then
+	  tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`
+	  for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
+	    case " $new_inherited_linker_flags " in
+	      *" $tmp_inherited_linker_flag "*) ;;
+	      *) new_inherited_linker_flags="$new_inherited_linker_flags $tmp_inherited_linker_flag";;
+	    esac
+	  done
+	fi
+	dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	if test "$linkmode,$pass" = "lib,link" ||
+	   test "$linkmode,$pass" = "prog,scan" ||
+	   { test "$linkmode" != prog && test "$linkmode" != lib; }; then
+	  test -n "$dlopen" && dlfiles="$dlfiles $dlopen"
+	  test -n "$dlpreopen" && dlprefiles="$dlprefiles $dlpreopen"
+	fi
+
+	if test "$pass" = conv; then
+	  # Only check for convenience libraries
+	  deplibs="$lib $deplibs"
+	  if test -z "$libdir"; then
+	    if test -z "$old_library"; then
+	      func_fatal_error "cannot find name of link library for \`$lib'"
+	    fi
+	    # It is a libtool convenience library, so add in its objects.
+	    convenience="$convenience $ladir/$objdir/$old_library"
+	    old_convenience="$old_convenience $ladir/$objdir/$old_library"
+	  elif test "$linkmode" != prog && test "$linkmode" != lib; then
+	    func_fatal_error "\`$lib' is not a convenience library"
+	  fi
+	  tmp_libs=
+	  for deplib in $dependency_libs; do
+	    deplibs="$deplib $deplibs"
+	    if $opt_duplicate_deps ; then
+	      case "$tmp_libs " in
+	      *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+	      esac
+	    fi
+	    tmp_libs="$tmp_libs $deplib"
+	  done
+	  continue
+	fi # $pass = conv
+
+
+	# Get the name of the library we link against.
+	linklib=
+	for l in $old_library $library_names; do
+	  linklib="$l"
+	done
+	if test -z "$linklib"; then
+	  func_fatal_error "cannot find name of link library for \`$lib'"
+	fi
+
+	# This library was specified with -dlopen.
+	if test "$pass" = dlopen; then
+	  if test -z "$libdir"; then
+	    func_fatal_error "cannot -dlopen a convenience library: \`$lib'"
+	  fi
+	  if test -z "$dlname" ||
+	     test "$dlopen_support" != yes ||
+	     test "$build_libtool_libs" = no; then
+	    # If there is no dlname, no dlopen support or we're linking
+	    # statically, we need to preload.  We also need to preload any
+	    # dependent libraries so libltdl's deplib preloader doesn't
+	    # bomb out in the load deplibs phase.
+	    dlprefiles="$dlprefiles $lib $dependency_libs"
+	  else
+	    newdlfiles="$newdlfiles $lib"
+	  fi
+	  continue
+	fi # $pass = dlopen
+
+	# We need an absolute path.
+	case $ladir in
+	[\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
+	*)
+	  abs_ladir=`cd "$ladir" && pwd`
+	  if test -z "$abs_ladir"; then
+	    func_warning "cannot determine absolute directory name of \`$ladir'"
+	    func_warning "passing it literally to the linker, although it might fail"
+	    abs_ladir="$ladir"
+	  fi
+	  ;;
+	esac
+	func_basename "$lib"
+	laname="$func_basename_result"
+
+	# Find the relevant object directory and library name.
+	if test "X$installed" = Xyes; then
+	  if test ! -f "$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+	    func_warning "library \`$lib' was moved."
+	    dir="$ladir"
+	    absdir="$abs_ladir"
+	    libdir="$abs_ladir"
+	  else
+	    dir="$libdir"
+	    absdir="$libdir"
+	  fi
+	  test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
+	else
+	  if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+	    dir="$ladir"
+	    absdir="$abs_ladir"
+	    # Remove this search path later
+	    notinst_path="$notinst_path $abs_ladir"
+	  else
+	    dir="$ladir/$objdir"
+	    absdir="$abs_ladir/$objdir"
+	    # Remove this search path later
+	    notinst_path="$notinst_path $abs_ladir"
+	  fi
+	fi # $installed = yes
+	func_stripname 'lib' '.la' "$laname"
+	name=$func_stripname_result
+
+	# This library was specified with -dlpreopen.
+	if test "$pass" = dlpreopen; then
+	  if test -z "$libdir" && test "$linkmode" = prog; then
+	    func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
+	  fi
+	  # Prefer using a static library (so that no silly _DYNAMIC symbols
+	  # are required to link).
+	  if test -n "$old_library"; then
+	    newdlprefiles="$newdlprefiles $dir/$old_library"
+	    # Keep a list of preopened convenience libraries to check
+	    # that they are being used correctly in the link pass.
+	    test -z "$libdir" && \
+		dlpreconveniencelibs="$dlpreconveniencelibs $dir/$old_library"
+	  # Otherwise, use the dlname, so that lt_dlopen finds it.
+	  elif test -n "$dlname"; then
+	    newdlprefiles="$newdlprefiles $dir/$dlname"
+	  else
+	    newdlprefiles="$newdlprefiles $dir/$linklib"
+	  fi
+	fi # $pass = dlpreopen
+
+	if test -z "$libdir"; then
+	  # Link the convenience library
+	  if test "$linkmode" = lib; then
+	    deplibs="$dir/$old_library $deplibs"
+	  elif test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$dir/$old_library $compile_deplibs"
+	    finalize_deplibs="$dir/$old_library $finalize_deplibs"
+	  else
+	    deplibs="$lib $deplibs" # used for prog,scan pass
+	  fi
+	  continue
+	fi
+
+
+	if test "$linkmode" = prog && test "$pass" != link; then
+	  newlib_search_path="$newlib_search_path $ladir"
+	  deplibs="$lib $deplibs"
+
+	  linkalldeplibs=no
+	  if test "$link_all_deplibs" != no || test -z "$library_names" ||
+	     test "$build_libtool_libs" = no; then
+	    linkalldeplibs=yes
+	  fi
+
+	  tmp_libs=
+	  for deplib in $dependency_libs; do
+	    case $deplib in
+	    -L*) func_stripname '-L' '' "$deplib"
+	         newlib_search_path="$newlib_search_path $func_stripname_result"
+		 ;;
+	    esac
+	    # Need to link against all dependency_libs?
+	    if test "$linkalldeplibs" = yes; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      # Need to hardcode shared library paths
+	      # or/and link against static libraries
+	      newdependency_libs="$deplib $newdependency_libs"
+	    fi
+	    if $opt_duplicate_deps ; then
+	      case "$tmp_libs " in
+	      *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+	      esac
+	    fi
+	    tmp_libs="$tmp_libs $deplib"
+	  done # for deplib
+	  continue
+	fi # $linkmode = prog...
+
+	if test "$linkmode,$pass" = "prog,link"; then
+	  if test -n "$library_names" &&
+	     { { test "$prefer_static_libs" = no ||
+	         test "$prefer_static_libs,$installed" = "built,yes"; } ||
+	       test -z "$old_library"; }; then
+	    # We need to hardcode the library path
+	    if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then
+	      # Make sure the rpath contains only unique directories.
+	      case "$temp_rpath:" in
+	      *"$absdir:"*) ;;
+	      *) temp_rpath="$temp_rpath$absdir:" ;;
+	      esac
+	    fi
+
+	    # Hardcode the library path.
+	    # Skip directories that are in the system default run-time
+	    # search path.
+	    case " $sys_lib_dlsearch_path " in
+	    *" $absdir "*) ;;
+	    *)
+	      case "$compile_rpath " in
+	      *" $absdir "*) ;;
+	      *) compile_rpath="$compile_rpath $absdir"
+	      esac
+	      ;;
+	    esac
+	    case " $sys_lib_dlsearch_path " in
+	    *" $libdir "*) ;;
+	    *)
+	      case "$finalize_rpath " in
+	      *" $libdir "*) ;;
+	      *) finalize_rpath="$finalize_rpath $libdir"
+	      esac
+	      ;;
+	    esac
+	  fi # $linkmode,$pass = prog,link...
+
+	  if test "$alldeplibs" = yes &&
+	     { test "$deplibs_check_method" = pass_all ||
+	       { test "$build_libtool_libs" = yes &&
+		 test -n "$library_names"; }; }; then
+	    # We only need to search for static libraries
+	    continue
+	  fi
+	fi
+
+	link_static=no # Whether the deplib will be linked statically
+	use_static_libs=$prefer_static_libs
+	if test "$use_static_libs" = built && test "$installed" = yes; then
+	  use_static_libs=no
+	fi
+	if test -n "$library_names" &&
+	   { test "$use_static_libs" = no || test -z "$old_library"; }; then
+	  case $host in
+	  *cygwin* | *mingw* | *cegcc*)
+	      # No point in relinking DLLs because paths are not encoded
+	      notinst_deplibs="$notinst_deplibs $lib"
+	      need_relink=no
+	    ;;
+	  *)
+	    if test "$installed" = no; then
+	      notinst_deplibs="$notinst_deplibs $lib"
+	      need_relink=yes
+	    fi
+	    ;;
+	  esac
+	  # This is a shared library
+
+	  # Warn about portability, can't link against -module's on some
+	  # systems (darwin).  Don't bleat about dlopened modules though!
+	  dlopenmodule=""
+	  for dlpremoduletest in $dlprefiles; do
+	    if test "X$dlpremoduletest" = "X$lib"; then
+	      dlopenmodule="$dlpremoduletest"
+	      break
+	    fi
+	  done
+	  if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then
+	    echo
+	    if test "$linkmode" = prog; then
+	      $ECHO "*** Warning: Linking the executable $output against the loadable module"
+	    else
+	      $ECHO "*** Warning: Linking the shared library $output against the loadable module"
+	    fi
+	    $ECHO "*** $linklib is not portable!"
+	  fi
+	  if test "$linkmode" = lib &&
+	     test "$hardcode_into_libs" = yes; then
+	    # Hardcode the library path.
+	    # Skip directories that are in the system default run-time
+	    # search path.
+	    case " $sys_lib_dlsearch_path " in
+	    *" $absdir "*) ;;
+	    *)
+	      case "$compile_rpath " in
+	      *" $absdir "*) ;;
+	      *) compile_rpath="$compile_rpath $absdir"
+	      esac
+	      ;;
+	    esac
+	    case " $sys_lib_dlsearch_path " in
+	    *" $libdir "*) ;;
+	    *)
+	      case "$finalize_rpath " in
+	      *" $libdir "*) ;;
+	      *) finalize_rpath="$finalize_rpath $libdir"
+	      esac
+	      ;;
+	    esac
+	  fi
+
+	  if test -n "$old_archive_from_expsyms_cmds"; then
+	    # figure out the soname
+	    set dummy $library_names
+	    shift
+	    realname="$1"
+	    shift
+	    eval "libname=\"$libname_spec\""
+	    # use dlname if we got it. it's perfectly good, no?
+	    if test -n "$dlname"; then
+	      soname="$dlname"
+	    elif test -n "$soname_spec"; then
+	      # bleh windows
+	      case $host in
+	      *cygwin* | mingw* | *cegcc*)
+	        func_arith $current - $age
+		major=$func_arith_result
+		versuffix="-$major"
+		;;
+	      esac
+	      eval "soname=\"$soname_spec\""
+	    else
+	      soname="$realname"
+	    fi
+
+	    # Make a new name for the extract_expsyms_cmds to use
+	    soroot="$soname"
+	    func_basename "$soroot"
+	    soname="$func_basename_result"
+	    func_stripname 'lib' '.dll' "$soname"
+	    newlib=libimp-$func_stripname_result.a
+
+	    # If the library has no export list, then create one now
+	    if test -f "$output_objdir/$soname-def"; then :
+	    else
+	      func_verbose "extracting exported symbol list from \`$soname'"
+	      func_execute_cmds "$extract_expsyms_cmds" 'exit $?'
+	    fi
+
+	    # Create $newlib
+	    if test -f "$output_objdir/$newlib"; then :; else
+	      func_verbose "generating import library for \`$soname'"
+	      func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?'
+	    fi
+	    # make sure the library variables are pointing to the new library
+	    dir=$output_objdir
+	    linklib=$newlib
+	  fi # test -n "$old_archive_from_expsyms_cmds"
+
+	  if test "$linkmode" = prog || test "$mode" != relink; then
+	    add_shlibpath=
+	    add_dir=
+	    add=
+	    lib_linked=yes
+	    case $hardcode_action in
+	    immediate | unsupported)
+	      if test "$hardcode_direct" = no; then
+		add="$dir/$linklib"
+		case $host in
+		  *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;;
+		  *-*-sysv4*uw2*) add_dir="-L$dir" ;;
+		  *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \
+		    *-*-unixware7*) add_dir="-L$dir" ;;
+		  *-*-darwin* )
+		    # if the lib is a (non-dlopened) module then we can not
+		    # link against it, someone is ignoring the earlier warnings
+		    if /usr/bin/file -L $add 2> /dev/null |
+			 $GREP ": [^:]* bundle" >/dev/null ; then
+		      if test "X$dlopenmodule" != "X$lib"; then
+			$ECHO "*** Warning: lib $linklib is a module, not a shared library"
+			if test -z "$old_library" ; then
+			  echo
+			  echo "*** And there doesn't seem to be a static archive available"
+			  echo "*** The link will probably fail, sorry"
+			else
+			  add="$dir/$old_library"
+			fi
+		      elif test -n "$old_library"; then
+			add="$dir/$old_library"
+		      fi
+		    fi
+		esac
+	      elif test "$hardcode_minus_L" = no; then
+		case $host in
+		*-*-sunos*) add_shlibpath="$dir" ;;
+		esac
+		add_dir="-L$dir"
+		add="-l$name"
+	      elif test "$hardcode_shlibpath_var" = no; then
+		add_shlibpath="$dir"
+		add="-l$name"
+	      else
+		lib_linked=no
+	      fi
+	      ;;
+	    relink)
+	      if test "$hardcode_direct" = yes &&
+	         test "$hardcode_direct_absolute" = no; then
+		add="$dir/$linklib"
+	      elif test "$hardcode_minus_L" = yes; then
+		add_dir="-L$absdir"
+		# Try looking first in the location we're being installed to.
+		if test -n "$inst_prefix_dir"; then
+		  case $libdir in
+		    [\\/]*)
+		      add_dir="$add_dir -L$inst_prefix_dir$libdir"
+		      ;;
+		  esac
+		fi
+		add="-l$name"
+	      elif test "$hardcode_shlibpath_var" = yes; then
+		add_shlibpath="$dir"
+		add="-l$name"
+	      else
+		lib_linked=no
+	      fi
+	      ;;
+	    *) lib_linked=no ;;
+	    esac
+
+	    if test "$lib_linked" != yes; then
+	      func_fatal_configuration "unsupported hardcode properties"
+	    fi
+
+	    if test -n "$add_shlibpath"; then
+	      case :$compile_shlibpath: in
+	      *":$add_shlibpath:"*) ;;
+	      *) compile_shlibpath="$compile_shlibpath$add_shlibpath:" ;;
+	      esac
+	    fi
+	    if test "$linkmode" = prog; then
+	      test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
+	      test -n "$add" && compile_deplibs="$add $compile_deplibs"
+	    else
+	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
+	      test -n "$add" && deplibs="$add $deplibs"
+	      if test "$hardcode_direct" != yes &&
+		 test "$hardcode_minus_L" != yes &&
+		 test "$hardcode_shlibpath_var" = yes; then
+		case :$finalize_shlibpath: in
+		*":$libdir:"*) ;;
+		*) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+		esac
+	      fi
+	    fi
+	  fi
+
+	  if test "$linkmode" = prog || test "$mode" = relink; then
+	    add_shlibpath=
+	    add_dir=
+	    add=
+	    # Finalize command for both is simple: just hardcode it.
+	    if test "$hardcode_direct" = yes &&
+	       test "$hardcode_direct_absolute" = no; then
+	      add="$libdir/$linklib"
+	    elif test "$hardcode_minus_L" = yes; then
+	      add_dir="-L$libdir"
+	      add="-l$name"
+	    elif test "$hardcode_shlibpath_var" = yes; then
+	      case :$finalize_shlibpath: in
+	      *":$libdir:"*) ;;
+	      *) finalize_shlibpath="$finalize_shlibpath$libdir:" ;;
+	      esac
+	      add="-l$name"
+	    elif test "$hardcode_automatic" = yes; then
+	      if test -n "$inst_prefix_dir" &&
+		 test -f "$inst_prefix_dir$libdir/$linklib" ; then
+		add="$inst_prefix_dir$libdir/$linklib"
+	      else
+		add="$libdir/$linklib"
+	      fi
+	    else
+	      # We cannot seem to hardcode it, guess we'll fake it.
+	      add_dir="-L$libdir"
+	      # Try looking first in the location we're being installed to.
+	      if test -n "$inst_prefix_dir"; then
+		case $libdir in
+		  [\\/]*)
+		    add_dir="$add_dir -L$inst_prefix_dir$libdir"
+		    ;;
+		esac
+	      fi
+	      add="-l$name"
+	    fi
+
+	    if test "$linkmode" = prog; then
+	      test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
+	      test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
+	    else
+	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
+	      test -n "$add" && deplibs="$add $deplibs"
+	    fi
+	  fi
+	elif test "$linkmode" = prog; then
+	  # Here we assume that one of hardcode_direct or hardcode_minus_L
+	  # is not unsupported.  This is valid on all known static and
+	  # shared platforms.
+	  if test "$hardcode_direct" != unsupported; then
+	    test -n "$old_library" && linklib="$old_library"
+	    compile_deplibs="$dir/$linklib $compile_deplibs"
+	    finalize_deplibs="$dir/$linklib $finalize_deplibs"
+	  else
+	    compile_deplibs="-l$name -L$dir $compile_deplibs"
+	    finalize_deplibs="-l$name -L$dir $finalize_deplibs"
+	  fi
+	elif test "$build_libtool_libs" = yes; then
+	  # Not a shared library
+	  if test "$deplibs_check_method" != pass_all; then
+	    # We're trying link a shared library against a static one
+	    # but the system doesn't support it.
+
+	    # Just print a warning and add the library to dependency_libs so
+	    # that the program can be linked against the static library.
+	    echo
+	    $ECHO "*** Warning: This system can not link to static lib archive $lib."
+	    echo "*** I have the capability to make that library automatically link in when"
+	    echo "*** you link to this library.  But I can only do this if you have a"
+	    echo "*** shared version of the library, which you do not appear to have."
+	    if test "$module" = yes; then
+	      echo "*** But as you try to build a module library, libtool will still create "
+	      echo "*** a static module, that should work as long as the dlopening application"
+	      echo "*** is linked with the -dlopen flag to resolve symbols at runtime."
+	      if test -z "$global_symbol_pipe"; then
+		echo
+		echo "*** However, this would only work if libtool was able to extract symbol"
+		echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
+		echo "*** not find such a program.  So, this module is probably useless."
+		echo "*** \`nm' from GNU binutils and a full rebuild may help."
+	      fi
+	      if test "$build_old_libs" = no; then
+		build_libtool_libs=module
+		build_old_libs=yes
+	      else
+		build_libtool_libs=no
+	      fi
+	    fi
+	  else
+	    deplibs="$dir/$old_library $deplibs"
+	    link_static=yes
+	  fi
+	fi # link shared/static library?
+
+	if test "$linkmode" = lib; then
+	  if test -n "$dependency_libs" &&
+	     { test "$hardcode_into_libs" != yes ||
+	       test "$build_old_libs" = yes ||
+	       test "$link_static" = yes; }; then
+	    # Extract -R from dependency_libs
+	    temp_deplibs=
+	    for libdir in $dependency_libs; do
+	      case $libdir in
+	      -R*) func_stripname '-R' '' "$libdir"
+	           temp_xrpath=$func_stripname_result
+		   case " $xrpath " in
+		   *" $temp_xrpath "*) ;;
+		   *) xrpath="$xrpath $temp_xrpath";;
+		   esac;;
+	      *) temp_deplibs="$temp_deplibs $libdir";;
+	      esac
+	    done
+	    dependency_libs="$temp_deplibs"
+	  fi
+
+	  newlib_search_path="$newlib_search_path $absdir"
+	  # Link against this library
+	  test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
+	  # ... and its dependency_libs
+	  tmp_libs=
+	  for deplib in $dependency_libs; do
+	    newdependency_libs="$deplib $newdependency_libs"
+	    if $opt_duplicate_deps ; then
+	      case "$tmp_libs " in
+	      *" $deplib "*) specialdeplibs="$specialdeplibs $deplib" ;;
+	      esac
+	    fi
+	    tmp_libs="$tmp_libs $deplib"
+	  done
+
+	  if test "$link_all_deplibs" != no; then
+	    # Add the search paths of all dependency libraries
+	    for deplib in $dependency_libs; do
+	      path=
+	      case $deplib in
+	      -L*) path="$deplib" ;;
+	      *.la)
+	        func_dirname "$deplib" "" "."
+		dir="$func_dirname_result"
+		# We need an absolute path.
+		case $dir in
+		[\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
+		*)
+		  absdir=`cd "$dir" && pwd`
+		  if test -z "$absdir"; then
+		    func_warning "cannot determine absolute directory name of \`$dir'"
+		    absdir="$dir"
+		  fi
+		  ;;
+		esac
+		if $GREP "^installed=no" $deplib > /dev/null; then
+		case $host in
+		*-*-darwin*)
+		  depdepl=
+		  deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib`
+		  if test -n "$deplibrary_names" ; then
+		    for tmp in $deplibrary_names ; do
+		      depdepl=$tmp
+		    done
+		    if test -f "$absdir/$objdir/$depdepl" ; then
+		      depdepl="$absdir/$objdir/$depdepl"
+		      darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+                      if test -z "$darwin_install_name"; then
+                          darwin_install_name=`${OTOOL64} -L $depdepl  | awk '{if (NR == 2) {print $1;exit}}'`
+                      fi
+		      compiler_flags="$compiler_flags ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
+		      linker_flags="$linker_flags -dylib_file ${darwin_install_name}:${depdepl}"
+		      path=
+		    fi
+		  fi
+		  ;;
+		*)
+		  path="-L$absdir/$objdir"
+		  ;;
+		esac
+		else
+		  libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+		  test -z "$libdir" && \
+		    func_fatal_error "\`$deplib' is not a valid libtool archive"
+		  test "$absdir" != "$libdir" && \
+		    func_warning "\`$deplib' seems to be moved"
+
+		  path="-L$absdir"
+		fi
+		;;
+	      esac
+	      case " $deplibs " in
+	      *" $path "*) ;;
+	      *) deplibs="$path $deplibs" ;;
+	      esac
+	    done
+	  fi # link_all_deplibs != no
+	fi # linkmode = lib
+      done # for deplib in $libs
+      if test "$pass" = link; then
+	if test "$linkmode" = "prog"; then
+	  compile_deplibs="$new_inherited_linker_flags $compile_deplibs"
+	  finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs"
+	else
+	  compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	fi
+      fi
+      dependency_libs="$newdependency_libs"
+      if test "$pass" = dlpreopen; then
+	# Link the dlpreopened libraries before other libraries
+	for deplib in $save_deplibs; do
+	  deplibs="$deplib $deplibs"
+	done
+      fi
+      if test "$pass" != dlopen; then
+	if test "$pass" != conv; then
+	  # Make sure lib_search_path contains only unique directories.
+	  lib_search_path=
+	  for dir in $newlib_search_path; do
+	    case "$lib_search_path " in
+	    *" $dir "*) ;;
+	    *) lib_search_path="$lib_search_path $dir" ;;
+	    esac
+	  done
+	  newlib_search_path=
+	fi
+
+	if test "$linkmode,$pass" != "prog,link"; then
+	  vars="deplibs"
+	else
+	  vars="compile_deplibs finalize_deplibs"
+	fi
+	for var in $vars dependency_libs; do
+	  # Add libraries to $var in reverse order
+	  eval tmp_libs=\$$var
+	  new_libs=
+	  for deplib in $tmp_libs; do
+	    # FIXME: Pedantically, this is the right thing to do, so
+	    #        that some nasty dependency loop isn't accidentally
+	    #        broken:
+	    #new_libs="$deplib $new_libs"
+	    # Pragmatically, this seems to cause very few problems in
+	    # practice:
+	    case $deplib in
+	    -L*) new_libs="$deplib $new_libs" ;;
+	    -R*) ;;
+	    *)
+	      # And here is the reason: when a library appears more
+	      # than once as an explicit dependence of a library, or
+	      # is implicitly linked in more than once by the
+	      # compiler, it is considered special, and multiple
+	      # occurrences thereof are not removed.  Compare this
+	      # with having the same library being listed as a
+	      # dependency of multiple other libraries: in this case,
+	      # we know (pedantically, we assume) the library does not
+	      # need to be listed more than once, so we keep only the
+	      # last copy.  This is not always right, but it is rare
+	      # enough that we require users that really mean to play
+	      # such unportable linking tricks to link the library
+	      # using -Wl,-lname, so that libtool does not consider it
+	      # for duplicate removal.
+	      case " $specialdeplibs " in
+	      *" $deplib "*) new_libs="$deplib $new_libs" ;;
+	      *)
+		case " $new_libs " in
+		*" $deplib "*) ;;
+		*) new_libs="$deplib $new_libs" ;;
+		esac
+		;;
+	      esac
+	      ;;
+	    esac
+	  done
+	  tmp_libs=
+	  for deplib in $new_libs; do
+	    case $deplib in
+	    -L*)
+	      case " $tmp_libs " in
+	      *" $deplib "*) ;;
+	      *) tmp_libs="$tmp_libs $deplib" ;;
+	      esac
+	      ;;
+	    *) tmp_libs="$tmp_libs $deplib" ;;
+	    esac
+	  done
+	  eval $var=\$tmp_libs
+	done # for var
+      fi
+      # Last step: remove runtime libs from dependency_libs
+      # (they stay in deplibs)
+      tmp_libs=
+      for i in $dependency_libs ; do
+	case " $predeps $postdeps $compiler_lib_search_path " in
+	*" $i "*)
+	  i=""
+	  ;;
+	esac
+	if test -n "$i" ; then
+	  tmp_libs="$tmp_libs $i"
+	fi
+      done
+      dependency_libs=$tmp_libs
+    done # for pass
+    if test "$linkmode" = prog; then
+      dlfiles="$newdlfiles"
+    fi
+    if test "$linkmode" = prog || test "$linkmode" = lib; then
+      dlprefiles="$newdlprefiles"
+    fi
+
+    case $linkmode in
+    oldlib)
+      if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+	func_warning "\`-dlopen' is ignored for archives"
+      fi
+
+      case " $deplibs" in
+      *\ -l* | *\ -L*)
+	func_warning "\`-l' and \`-L' are ignored for archives" ;;
+      esac
+
+      test -n "$rpath" && \
+	func_warning "\`-rpath' is ignored for archives"
+
+      test -n "$xrpath" && \
+	func_warning "\`-R' is ignored for archives"
+
+      test -n "$vinfo" && \
+	func_warning "\`-version-info/-version-number' is ignored for archives"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for archives"
+
+      test -n "$export_symbols$export_symbols_regex" && \
+	func_warning "\`-export-symbols' is ignored for archives"
+
+      # Now set the variables for building old libraries.
+      build_libtool_libs=no
+      oldlibs="$output"
+      objs="$objs$old_deplibs"
+      ;;
+
+    lib)
+      # Make sure we only generate libraries of the form `libNAME.la'.
+      case $outputname in
+      lib*)
+	func_stripname 'lib' '.la' "$outputname"
+	name=$func_stripname_result
+	eval "shared_ext=\"$shrext_cmds\""
+	eval "libname=\"$libname_spec\""
+	;;
+      *)
+	test "$module" = no && \
+	  func_fatal_help "libtool library \`$output' must begin with \`lib'"
+
+	if test "$need_lib_prefix" != no; then
+	  # Add the "lib" prefix for modules if required
+	  func_stripname '' '.la' "$outputname"
+	  name=$func_stripname_result
+	  eval "shared_ext=\"$shrext_cmds\""
+	  eval "libname=\"$libname_spec\""
+	else
+	  func_stripname '' '.la' "$outputname"
+	  libname=$func_stripname_result
+	fi
+	;;
+      esac
+
+      if test -n "$objs"; then
+	if test "$deplibs_check_method" != pass_all; then
+	  func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs"
+	else
+	  echo
+	  $ECHO "*** Warning: Linking the shared library $output against the non-libtool"
+	  $ECHO "*** objects $objs is not portable!"
+	  libobjs="$libobjs $objs"
+	fi
+      fi
+
+      test "$dlself" != no && \
+	func_warning "\`-dlopen self' is ignored for libtool libraries"
+
+      set dummy $rpath
+      shift
+      test "$#" -gt 1 && \
+	func_warning "ignoring multiple \`-rpath's for a libtool library"
+
+      install_libdir="$1"
+
+      oldlibs=
+      if test -z "$rpath"; then
+	if test "$build_libtool_libs" = yes; then
+	  # Building a libtool convenience library.
+	  # Some compilers have problems with a `.al' extension so
+	  # convenience libraries should have the same extension an
+	  # archive normally would.
+	  oldlibs="$output_objdir/$libname.$libext $oldlibs"
+	  build_libtool_libs=convenience
+	  build_old_libs=yes
+	fi
+
+	test -n "$vinfo" && \
+	  func_warning "\`-version-info/-version-number' is ignored for convenience libraries"
+
+	test -n "$release" && \
+	  func_warning "\`-release' is ignored for convenience libraries"
+      else
+
+	# Parse the version information argument.
+	save_ifs="$IFS"; IFS=':'
+	set dummy $vinfo 0 0 0
+	shift
+	IFS="$save_ifs"
+
+	test -n "$7" && \
+	  func_fatal_help "too many parameters to \`-version-info'"
+
+	# convert absolute version numbers to libtool ages
+	# this retains compatibility with .la files and attempts
+	# to make the code below a bit more comprehensible
+
+	case $vinfo_number in
+	yes)
+	  number_major="$1"
+	  number_minor="$2"
+	  number_revision="$3"
+	  #
+	  # There are really only two kinds -- those that
+	  # use the current revision as the major version
+	  # and those that subtract age and use age as
+	  # a minor version.  But, then there is irix
+	  # which has an extra 1 added just for fun
+	  #
+	  case $version_type in
+	  darwin|linux|osf|windows|none)
+	    func_arith $number_major + $number_minor
+	    current=$func_arith_result
+	    age="$number_minor"
+	    revision="$number_revision"
+	    ;;
+	  freebsd-aout|freebsd-elf|qnx|sunos)
+	    current="$number_major"
+	    revision="$number_minor"
+	    age="0"
+	    ;;
+	  irix|nonstopux)
+	    func_arith $number_major + $number_minor
+	    current=$func_arith_result
+	    age="$number_minor"
+	    revision="$number_minor"
+	    lt_irix_increment=no
+	    ;;
+	  esac
+	  ;;
+	no)
+	  current="$1"
+	  revision="$2"
+	  age="$3"
+	  ;;
+	esac
+
+	# Check that each of the things are valid numbers.
+	case $current in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "CURRENT \`$current' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	case $revision in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "REVISION \`$revision' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	case $age in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "AGE \`$age' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	if test "$age" -gt "$current"; then
+	  func_error "AGE \`$age' is greater than the current interface number \`$current'"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	fi
+
+	# Calculate the version variables.
+	major=
+	versuffix=
+	verstring=
+	case $version_type in
+	none) ;;
+
+	darwin)
+	  # Like Linux, but with the current version available in
+	  # verstring for coding it into the library header
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix="$major.$age.$revision"
+	  # Darwin ld doesn't like 0 for these options...
+	  func_arith $current + 1
+	  minor_current=$func_arith_result
+	  xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision"
+	  verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
+	  ;;
+
+	freebsd-aout)
+	  major=".$current"
+	  versuffix=".$current.$revision";
+	  ;;
+
+	freebsd-elf)
+	  major=".$current"
+	  versuffix=".$current"
+	  ;;
+
+	irix | nonstopux)
+	  if test "X$lt_irix_increment" = "Xno"; then
+	    func_arith $current - $age
+	  else
+	    func_arith $current - $age + 1
+	  fi
+	  major=$func_arith_result
+
+	  case $version_type in
+	    nonstopux) verstring_prefix=nonstopux ;;
+	    *)         verstring_prefix=sgi ;;
+	  esac
+	  verstring="$verstring_prefix$major.$revision"
+
+	  # Add in all the interfaces that we are compatible with.
+	  loop=$revision
+	  while test "$loop" -ne 0; do
+	    func_arith $revision - $loop
+	    iface=$func_arith_result
+	    func_arith $loop - 1
+	    loop=$func_arith_result
+	    verstring="$verstring_prefix$major.$iface:$verstring"
+	  done
+
+	  # Before this point, $major must not contain `.'.
+	  major=.$major
+	  versuffix="$major.$revision"
+	  ;;
+
+	linux)
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix="$major.$age.$revision"
+	  ;;
+
+	osf)
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix=".$current.$age.$revision"
+	  verstring="$current.$age.$revision"
+
+	  # Add in all the interfaces that we are compatible with.
+	  loop=$age
+	  while test "$loop" -ne 0; do
+	    func_arith $current - $loop
+	    iface=$func_arith_result
+	    func_arith $loop - 1
+	    loop=$func_arith_result
+	    verstring="$verstring:${iface}.0"
+	  done
+
+	  # Make executables depend on our current version.
+	  verstring="$verstring:${current}.0"
+	  ;;
+
+	qnx)
+	  major=".$current"
+	  versuffix=".$current"
+	  ;;
+
+	sunos)
+	  major=".$current"
+	  versuffix=".$current.$revision"
+	  ;;
+
+	windows)
+	  # Use '-' rather than '.', since we only want one
+	  # extension on DOS 8.3 filesystems.
+	  func_arith $current - $age
+	  major=$func_arith_result
+	  versuffix="-$major"
+	  ;;
+
+	*)
+	  func_fatal_configuration "unknown library version type \`$version_type'"
+	  ;;
+	esac
+
+	# Clear the version info if we defaulted, and they specified a release.
+	if test -z "$vinfo" && test -n "$release"; then
+	  major=
+	  case $version_type in
+	  darwin)
+	    # we can't check for "0.0" in archive_cmds due to quoting
+	    # problems, so we reset it completely
+	    verstring=
+	    ;;
+	  *)
+	    verstring="0.0"
+	    ;;
+	  esac
+	  if test "$need_version" = no; then
+	    versuffix=
+	  else
+	    versuffix=".0.0"
+	  fi
+	fi
+
+	# Remove version info from name if versioning should be avoided
+	if test "$avoid_version" = yes && test "$need_version" = no; then
+	  major=
+	  versuffix=
+	  verstring=""
+	fi
+
+	# Check to see if the archive will have undefined symbols.
+	if test "$allow_undefined" = yes; then
+	  if test "$allow_undefined_flag" = unsupported; then
+	    func_warning "undefined symbols not allowed in $host shared libraries"
+	    build_libtool_libs=no
+	    build_old_libs=yes
+	  fi
+	else
+	  # Don't allow undefined symbols.
+	  allow_undefined_flag="$no_undefined_flag"
+	fi
+
+      fi
+
+      func_generate_dlsyms "$libname" "$libname" "yes"
+      libobjs="$libobjs $symfileobj"
+      test "X$libobjs" = "X " && libobjs=
+
+      if test "$mode" != relink; then
+	# Remove our outputs, but don't remove object files since they
+	# may have been created when compiling PIC objects.
+	removelist=
+	tempremovelist=`$ECHO "$output_objdir/*"`
+	for p in $tempremovelist; do
+	  case $p in
+	    *.$objext | *.gcno)
+	       ;;
+	    $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*)
+	       if test "X$precious_files_regex" != "X"; then
+		 if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1
+		 then
+		   continue
+		 fi
+	       fi
+	       removelist="$removelist $p"
+	       ;;
+	    *) ;;
+	  esac
+	done
+	test -n "$removelist" && \
+	  func_show_eval "${RM}r \$removelist"
+      fi
+
+      # Now set the variables for building old libraries.
+      if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
+	oldlibs="$oldlibs $output_objdir/$libname.$libext"
+
+	# Transform .lo files to .o files.
+	oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP`
+      fi
+
+      # Eliminate all temporary directories.
+      #for path in $notinst_path; do
+      #	lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"`
+      #	deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"`
+      #	dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"`
+      #done
+
+      if test -n "$xrpath"; then
+	# If the user specified any rpath flags, then add them.
+	temp_xrpath=
+	for libdir in $xrpath; do
+	  temp_xrpath="$temp_xrpath -R$libdir"
+	  case "$finalize_rpath " in
+	  *" $libdir "*) ;;
+	  *) finalize_rpath="$finalize_rpath $libdir" ;;
+	  esac
+	done
+	if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
+	  dependency_libs="$temp_xrpath $dependency_libs"
+	fi
+      fi
+
+      # Make sure dlfiles contains only unique files that won't be dlpreopened
+      old_dlfiles="$dlfiles"
+      dlfiles=
+      for lib in $old_dlfiles; do
+	case " $dlprefiles $dlfiles " in
+	*" $lib "*) ;;
+	*) dlfiles="$dlfiles $lib" ;;
+	esac
+      done
+
+      # Make sure dlprefiles contains only unique files
+      old_dlprefiles="$dlprefiles"
+      dlprefiles=
+      for lib in $old_dlprefiles; do
+	case "$dlprefiles " in
+	*" $lib "*) ;;
+	*) dlprefiles="$dlprefiles $lib" ;;
+	esac
+      done
+
+      if test "$build_libtool_libs" = yes; then
+	if test -n "$rpath"; then
+	  case $host in
+	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	    # these systems don't actually have a c library (as such)!
+	    ;;
+	  *-*-rhapsody* | *-*-darwin1.[012])
+	    # Rhapsody C library is in the System framework
+	    deplibs="$deplibs System.ltframework"
+	    ;;
+	  *-*-netbsd*)
+	    # Don't link with libc until the a.out ld.so is fixed.
+	    ;;
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	    # Do not include libc due to us having libc/libc_r.
+	    ;;
+	  *-*-sco3.2v5* | *-*-sco5v6*)
+	    # Causes problems with __ctype
+	    ;;
+	  *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+	    # Compiler inserts libc in the correct place for threads to work
+	    ;;
+	  *)
+	    # Add libc to deplibs on all other systems if necessary.
+	    if test "$build_libtool_need_lc" = "yes"; then
+	      deplibs="$deplibs -lc"
+	    fi
+	    ;;
+	  esac
+	fi
+
+	# Transform deplibs into only deplibs that can be linked in shared.
+	name_save=$name
+	libname_save=$libname
+	release_save=$release
+	versuffix_save=$versuffix
+	major_save=$major
+	# I'm not sure if I'm treating the release correctly.  I think
+	# release should show up in the -l (ie -lgmp5) so we don't want to
+	# add it in twice.  Is that correct?
+	release=""
+	versuffix=""
+	major=""
+	newdeplibs=
+	droppeddeps=no
+	case $deplibs_check_method in
+	pass_all)
+	  # Don't check for shared/static.  Everything works.
+	  # This might be a little naive.  We might want to check
+	  # whether the library exists or not.  But this is on
+	  # osf3 & osf4 and I'm not really sure... Just
+	  # implementing what was already the behavior.
+	  newdeplibs=$deplibs
+	  ;;
+	test_compile)
+	  # This code stresses the "libraries are programs" paradigm to its
+	  # limits. Maybe even breaks it.  We compile a program, linking it
+	  # against the deplibs as a proxy for the library.  Then we can check
+	  # whether they linked in statically or dynamically with ldd.
+	  $opt_dry_run || $RM conftest.c
+	  cat > conftest.c <<EOF
+	  int main() { return 0; }
+EOF
+	  $opt_dry_run || $RM conftest
+	  if $LTCC $LTCFLAGS -o conftest conftest.c $deplibs; then
+	    ldd_output=`ldd conftest`
+	    for i in $deplibs; do
+	      case $i in
+	      -l*)
+		func_stripname -l '' "$i"
+		name=$func_stripname_result
+		if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+		  case " $predeps $postdeps " in
+		  *" $i "*)
+		    newdeplibs="$newdeplibs $i"
+		    i=""
+		    ;;
+		  esac
+		fi
+		if test -n "$i" ; then
+		  eval "libname=\"$libname_spec\""
+		  eval "deplib_matches=\"$library_names_spec\""
+		  set dummy $deplib_matches; shift
+		  deplib_match=$1
+		  if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+		    newdeplibs="$newdeplibs $i"
+		  else
+		    droppeddeps=yes
+		    echo
+		    $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+		    echo "*** I have the capability to make that library automatically link in when"
+		    echo "*** you link to this library.  But I can only do this if you have a"
+		    echo "*** shared version of the library, which I believe you do not have"
+		    echo "*** because a test_compile did reveal that the linker did not use it for"
+		    echo "*** its dynamic dependency list that programs get resolved with at runtime."
+		  fi
+		fi
+		;;
+	      *)
+		newdeplibs="$newdeplibs $i"
+		;;
+	      esac
+	    done
+	  else
+	    # Error occurred in the first compile.  Let's try to salvage
+	    # the situation: Compile a separate program for each library.
+	    for i in $deplibs; do
+	      case $i in
+	      -l*)
+		func_stripname -l '' "$i"
+		name=$func_stripname_result
+		$opt_dry_run || $RM conftest
+		if $LTCC $LTCFLAGS -o conftest conftest.c $i; then
+		  ldd_output=`ldd conftest`
+		  if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+		    case " $predeps $postdeps " in
+		    *" $i "*)
+		      newdeplibs="$newdeplibs $i"
+		      i=""
+		      ;;
+		    esac
+		  fi
+		  if test -n "$i" ; then
+		    eval "libname=\"$libname_spec\""
+		    eval "deplib_matches=\"$library_names_spec\""
+		    set dummy $deplib_matches; shift
+		    deplib_match=$1
+		    if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
+		      newdeplibs="$newdeplibs $i"
+		    else
+		      droppeddeps=yes
+		      echo
+		      $ECHO "*** Warning: dynamic linker does not accept needed library $i."
+		      echo "*** I have the capability to make that library automatically link in when"
+		      echo "*** you link to this library.  But I can only do this if you have a"
+		      echo "*** shared version of the library, which you do not appear to have"
+		      echo "*** because a test_compile did reveal that the linker did not use this one"
+		      echo "*** as a dynamic dependency that programs can get resolved with at runtime."
+		    fi
+		  fi
+		else
+		  droppeddeps=yes
+		  echo
+		  $ECHO "*** Warning!  Library $i is needed by this library but I was not able to"
+		  echo "*** make it link in!  You will probably need to install it or some"
+		  echo "*** library that it depends on before this library will be fully"
+		  echo "*** functional.  Installing it before continuing would be even better."
+		fi
+		;;
+	      *)
+		newdeplibs="$newdeplibs $i"
+		;;
+	      esac
+	    done
+	  fi
+	  ;;
+	file_magic*)
+	  set dummy $deplibs_check_method; shift
+	  file_magic_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+	  for a_deplib in $deplibs; do
+	    case $a_deplib in
+	    -l*)
+	      func_stripname -l '' "$a_deplib"
+	      name=$func_stripname_result
+	      if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+		case " $predeps $postdeps " in
+		*" $a_deplib "*)
+		  newdeplibs="$newdeplibs $a_deplib"
+		  a_deplib=""
+		  ;;
+		esac
+	      fi
+	      if test -n "$a_deplib" ; then
+		eval "libname=\"$libname_spec\""
+		for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+		  potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+		  for potent_lib in $potential_libs; do
+		      # Follow soft links.
+		      if ls -lLd "$potent_lib" 2>/dev/null |
+			 $GREP " -> " >/dev/null; then
+			continue
+		      fi
+		      # The statement above tries to avoid entering an
+		      # endless loop below, in case of cyclic links.
+		      # We might still enter an endless loop, since a link
+		      # loop can be closed while we follow links,
+		      # but so what?
+		      potlib="$potent_lib"
+		      while test -h "$potlib" 2>/dev/null; do
+			potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'`
+			case $potliblink in
+			[\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";;
+			*) potlib=`$ECHO "$potlib" | $SED 's,[^/]*$,,'`"$potliblink";;
+			esac
+		      done
+		      if eval "$file_magic_cmd \"\$potlib\"" 2>/dev/null |
+			 $SED -e 10q |
+			 $EGREP "$file_magic_regex" > /dev/null; then
+			newdeplibs="$newdeplibs $a_deplib"
+			a_deplib=""
+			break 2
+		      fi
+		  done
+		done
+	      fi
+	      if test -n "$a_deplib" ; then
+		droppeddeps=yes
+		echo
+		$ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because I did check the linker path looking for a file starting"
+		if test -z "$potlib" ; then
+		  $ECHO "*** with $libname but no candidates were found. (...for file magic test)"
+		else
+		  $ECHO "*** with $libname and none of the candidates passed a file format test"
+		  $ECHO "*** using a file magic. Last file checked: $potlib"
+		fi
+	      fi
+	      ;;
+	    *)
+	      # Add a -L argument.
+	      newdeplibs="$newdeplibs $a_deplib"
+	      ;;
+	    esac
+	  done # Gone through all deplibs.
+	  ;;
+	match_pattern*)
+	  set dummy $deplibs_check_method; shift
+	  match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+	  for a_deplib in $deplibs; do
+	    case $a_deplib in
+	    -l*)
+	      func_stripname -l '' "$a_deplib"
+	      name=$func_stripname_result
+	      if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+		case " $predeps $postdeps " in
+		*" $a_deplib "*)
+		  newdeplibs="$newdeplibs $a_deplib"
+		  a_deplib=""
+		  ;;
+		esac
+	      fi
+	      if test -n "$a_deplib" ; then
+		eval "libname=\"$libname_spec\""
+		for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+		  potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+		  for potent_lib in $potential_libs; do
+		    potlib="$potent_lib" # see symlink-check above in file_magic test
+		    if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \
+		       $EGREP "$match_pattern_regex" > /dev/null; then
+		      newdeplibs="$newdeplibs $a_deplib"
+		      a_deplib=""
+		      break 2
+		    fi
+		  done
+		done
+	      fi
+	      if test -n "$a_deplib" ; then
+		droppeddeps=yes
+		echo
+		$ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because I did check the linker path looking for a file starting"
+		if test -z "$potlib" ; then
+		  $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)"
+		else
+		  $ECHO "*** with $libname and none of the candidates passed a file format test"
+		  $ECHO "*** using a regex pattern. Last file checked: $potlib"
+		fi
+	      fi
+	      ;;
+	    *)
+	      # Add a -L argument.
+	      newdeplibs="$newdeplibs $a_deplib"
+	      ;;
+	    esac
+	  done # Gone through all deplibs.
+	  ;;
+	none | unknown | *)
+	  newdeplibs=""
+	  tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'`
+	  if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+	    for i in $predeps $postdeps ; do
+	      # can't use Xsed below, because $i might contain '/'
+	      tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s,$i,,"`
+	    done
+	  fi
+	  case $tmp_deplibs in
+	  *[!\	\ ]*)
+	    echo
+	    if test "X$deplibs_check_method" = "Xnone"; then
+	      echo "*** Warning: inter-library dependencies are not supported in this platform."
+	    else
+	      echo "*** Warning: inter-library dependencies are not known to be supported."
+	    fi
+	    echo "*** All declared inter-library dependencies are being dropped."
+	    droppeddeps=yes
+	    ;;
+	  esac
+	  ;;
+	esac
+	versuffix=$versuffix_save
+	major=$major_save
+	release=$release_save
+	libname=$libname_save
+	name=$name_save
+
+	case $host in
+	*-*-rhapsody* | *-*-darwin1.[012])
+	  # On Rhapsody replace the C library with the System framework
+	  newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'`
+	  ;;
+	esac
+
+	if test "$droppeddeps" = yes; then
+	  if test "$module" = yes; then
+	    echo
+	    echo "*** Warning: libtool could not satisfy all declared inter-library"
+	    $ECHO "*** dependencies of module $libname.  Therefore, libtool will create"
+	    echo "*** a static module, that should work as long as the dlopening"
+	    echo "*** application is linked with the -dlopen flag."
+	    if test -z "$global_symbol_pipe"; then
+	      echo
+	      echo "*** However, this would only work if libtool was able to extract symbol"
+	      echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
+	      echo "*** not find such a program.  So, this module is probably useless."
+	      echo "*** \`nm' from GNU binutils and a full rebuild may help."
+	    fi
+	    if test "$build_old_libs" = no; then
+	      oldlibs="$output_objdir/$libname.$libext"
+	      build_libtool_libs=module
+	      build_old_libs=yes
+	    else
+	      build_libtool_libs=no
+	    fi
+	  else
+	    echo "*** The inter-library dependencies that have been dropped here will be"
+	    echo "*** automatically added whenever a program is linked with this library"
+	    echo "*** or is declared to -dlopen it."
+
+	    if test "$allow_undefined" = no; then
+	      echo
+	      echo "*** Since this library must not contain undefined symbols,"
+	      echo "*** because either the platform does not support them or"
+	      echo "*** it was explicitly requested with -no-undefined,"
+	      echo "*** libtool will only create a static version of it."
+	      if test "$build_old_libs" = no; then
+		oldlibs="$output_objdir/$libname.$libext"
+		build_libtool_libs=module
+		build_old_libs=yes
+	      else
+		build_libtool_libs=no
+	      fi
+	    fi
+	  fi
+	fi
+	# Done checking deplibs!
+	deplibs=$newdeplibs
+      fi
+      # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+      case $host in
+	*-*-darwin*)
+	  newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  ;;
+      esac
+
+      # move library search paths that coincide with paths to not yet
+      # installed libraries to the beginning of the library search list
+      new_libs=
+      for path in $notinst_path; do
+	case " $new_libs " in
+	*" -L$path/$objdir "*) ;;
+	*)
+	  case " $deplibs " in
+	  *" -L$path/$objdir "*)
+	    new_libs="$new_libs -L$path/$objdir" ;;
+	  esac
+	  ;;
+	esac
+      done
+      for deplib in $deplibs; do
+	case $deplib in
+	-L*)
+	  case " $new_libs " in
+	  *" $deplib "*) ;;
+	  *) new_libs="$new_libs $deplib" ;;
+	  esac
+	  ;;
+	*) new_libs="$new_libs $deplib" ;;
+	esac
+      done
+      deplibs="$new_libs"
+
+      # All the library-specific variables (install_libdir is set above).
+      library_names=
+      old_library=
+      dlname=
+
+      # Test again, we may have decided not to build it any more
+      if test "$build_libtool_libs" = yes; then
+	if test "$hardcode_into_libs" = yes; then
+	  # Hardcode the library paths
+	  hardcode_libdirs=
+	  dep_rpath=
+	  rpath="$finalize_rpath"
+	  test "$mode" != relink && rpath="$compile_rpath$rpath"
+	  for libdir in $rpath; do
+	    if test -n "$hardcode_libdir_flag_spec"; then
+	      if test -n "$hardcode_libdir_separator"; then
+		if test -z "$hardcode_libdirs"; then
+		  hardcode_libdirs="$libdir"
+		else
+		  # Just accumulate the unique libdirs.
+		  case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+		  *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		    ;;
+		  *)
+		    hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+		    ;;
+		  esac
+		fi
+	      else
+		eval "flag=\"$hardcode_libdir_flag_spec\""
+		dep_rpath="$dep_rpath $flag"
+	      fi
+	    elif test -n "$runpath_var"; then
+	      case "$perm_rpath " in
+	      *" $libdir "*) ;;
+	      *) perm_rpath="$perm_rpath $libdir" ;;
+	      esac
+	    fi
+	  done
+	  # Substitute the hardcoded libdirs into the rpath.
+	  if test -n "$hardcode_libdir_separator" &&
+	     test -n "$hardcode_libdirs"; then
+	    libdir="$hardcode_libdirs"
+	    if test -n "$hardcode_libdir_flag_spec_ld"; then
+	      eval "dep_rpath=\"$hardcode_libdir_flag_spec_ld\""
+	    else
+	      eval "dep_rpath=\"$hardcode_libdir_flag_spec\""
+	    fi
+	  fi
+	  if test -n "$runpath_var" && test -n "$perm_rpath"; then
+	    # We should set the runpath_var.
+	    rpath=
+	    for dir in $perm_rpath; do
+	      rpath="$rpath$dir:"
+	    done
+	    eval $runpath_var=\$rpath\$$runpath_var
+	    export $runpath_var
+	  fi
+	  test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs"
+	fi
+
+	shlibpath="$finalize_shlibpath"
+	test "$mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
+	if test -n "$shlibpath"; then
+	  eval $shlibpath_var=\$shlibpath\$$shlibpath_var
+	  export $shlibpath_var
+	fi
+
+	# Get the real and link names of the library.
+	eval "shared_ext=\"$shrext_cmds\""
+	eval "library_names=\"$library_names_spec\""
+	set dummy $library_names
+	shift
+	realname="$1"
+	shift
+
+	if test -n "$soname_spec"; then
+	  eval "soname=\"$soname_spec\""
+	else
+	  soname="$realname"
+	fi
+	if test -z "$dlname"; then
+	  dlname=$soname
+	fi
+
+	lib="$output_objdir/$realname"
+	linknames=
+	for link
+	do
+	  linknames="$linknames $link"
+	done
+
+	# Use standard objects if they are pic
+	test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	test "X$libobjs" = "X " && libobjs=
+
+	delfiles=
+	if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	  $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
+	  export_symbols="$output_objdir/$libname.uexp"
+	  delfiles="$delfiles $export_symbols"
+	fi
+
+	orig_export_symbols=
+	case $host_os in
+	cygwin* | mingw* | cegcc*)
+	  if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
+	    # exporting using user supplied symfile
+	    if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
+	      # and it's NOT already a .def file. Must figure out
+	      # which of the given symbols are data symbols and tag
+	      # them as such. So, trigger use of export_symbols_cmds.
+	      # export_symbols gets reassigned inside the "prepare
+	      # the list of exported symbols" if statement, so the
+	      # include_expsyms logic still works.
+	      orig_export_symbols="$export_symbols"
+	      export_symbols=
+	      always_export_symbols=yes
+	    fi
+	  fi
+	  ;;
+	esac
+
+	# Prepare the list of exported symbols
+	if test -z "$export_symbols"; then
+	  if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then
+	    func_verbose "generating symbol list for \`$libname.la'"
+	    export_symbols="$output_objdir/$libname.exp"
+	    $opt_dry_run || $RM $export_symbols
+	    cmds=$export_symbols_cmds
+	    save_ifs="$IFS"; IFS='~'
+	    for cmd in $cmds; do
+	      IFS="$save_ifs"
+	      eval "cmd=\"$cmd\""
+	      func_len " $cmd"
+	      len=$func_len_result
+	      if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+		func_show_eval "$cmd" 'exit $?'
+		skipped_export=false
+	      else
+		# The command line is too long to execute in one step.
+		func_verbose "using reloadable object file for export list..."
+		skipped_export=:
+		# Break out early, otherwise skipped_export may be
+		# set to false by a later but shorter cmd.
+		break
+	      fi
+	    done
+	    IFS="$save_ifs"
+	    if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then
+	      func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+	      func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+	    fi
+	  fi
+	fi
+
+	if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	  tmp_export_symbols="$export_symbols"
+	  test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+	  $opt_dry_run || $ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"
+	fi
+
+	if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then
+	  # The given exports_symbols file has to be filtered, so filter it.
+	  func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+	  # FIXME: $output_objdir/$libname.filter potentially contains lots of
+	  # 's' commands which not all seds can handle. GNU sed should be fine
+	  # though. Also, the filter scales superlinearly with the number of
+	  # global variables. join(1) would be nice here, but unfortunately
+	  # isn't a blessed tool.
+	  $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+	  delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+	  export_symbols=$output_objdir/$libname.def
+	  $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+	fi
+
+	tmp_deplibs=
+	for test_deplib in $deplibs; do
+	  case " $convenience " in
+	  *" $test_deplib "*) ;;
+	  *)
+	    tmp_deplibs="$tmp_deplibs $test_deplib"
+	    ;;
+	  esac
+	done
+	deplibs="$tmp_deplibs"
+
+	if test -n "$convenience"; then
+	  if test -n "$whole_archive_flag_spec" &&
+	    test "$compiler_needs_object" = yes &&
+	    test -z "$libobjs"; then
+	    # extract the archives, so we have objects to list.
+	    # TODO: could optimize this to just extract one archive.
+	    whole_archive_flag_spec=
+	  fi
+	  if test -n "$whole_archive_flag_spec"; then
+	    save_libobjs=$libobjs
+	    eval "libobjs=\"\$libobjs $whole_archive_flag_spec\""
+	    test "X$libobjs" = "X " && libobjs=
+	  else
+	    gentop="$output_objdir/${outputname}x"
+	    generated="$generated $gentop"
+
+	    func_extract_archives $gentop $convenience
+	    libobjs="$libobjs $func_extract_archives_result"
+	    test "X$libobjs" = "X " && libobjs=
+	  fi
+	fi
+
+	if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
+	  eval "flag=\"$thread_safe_flag_spec\""
+	  linker_flags="$linker_flags $flag"
+	fi
+
+	# Make a backup of the uninstalled library when relinking
+	if test "$mode" = relink; then
+	  $opt_dry_run || (cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U) || exit $?
+	fi
+
+	# Do each of the archive commands.
+	if test "$module" = yes && test -n "$module_cmds" ; then
+	  if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+	    eval "test_cmds=\"$module_expsym_cmds\""
+	    cmds=$module_expsym_cmds
+	  else
+	    eval "test_cmds=\"$module_cmds\""
+	    cmds=$module_cmds
+	  fi
+	else
+	  if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+	    eval "test_cmds=\"$archive_expsym_cmds\""
+	    cmds=$archive_expsym_cmds
+	  else
+	    eval "test_cmds=\"$archive_cmds\""
+	    cmds=$archive_cmds
+	  fi
+	fi
+
+	if test "X$skipped_export" != "X:" &&
+	   func_len " $test_cmds" &&
+	   len=$func_len_result &&
+	   test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+	  :
+	else
+	  # The command line is too long to link in one step, link piecewise
+	  # or, if using GNU ld and skipped_export is not :, use a linker
+	  # script.
+
+	  # Save the value of $output and $libobjs because we want to
+	  # use them later.  If we have whole_archive_flag_spec, we
+	  # want to use save_libobjs as it was before
+	  # whole_archive_flag_spec was expanded, because we can't
+	  # assume the linker understands whole_archive_flag_spec.
+	  # This may have to be revisited, in case too many
+	  # convenience libraries get linked in and end up exceeding
+	  # the spec.
+	  if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then
+	    save_libobjs=$libobjs
+	  fi
+	  save_output=$output
+	  func_basename "$output"
+	  output_la=$func_basename_result
+
+	  # Clear the reloadable object creation command queue and
+	  # initialize k to one.
+	  test_cmds=
+	  concat_cmds=
+	  objlist=
+	  last_robj=
+	  k=1
+
+	  if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then
+	    output=${output_objdir}/${output_la}.lnkscript
+	    func_verbose "creating GNU ld script: $output"
+	    echo 'INPUT (' > $output
+	    for obj in $save_libobjs
+	    do
+	      $ECHO "$obj" >> $output
+	    done
+	    echo ')' >> $output
+	    delfiles="$delfiles $output"
+	  elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
+	    output=${output_objdir}/${output_la}.lnk
+	    func_verbose "creating linker input file list: $output"
+	    : > $output
+	    set x $save_libobjs
+	    shift
+	    firstobj=
+	    if test "$compiler_needs_object" = yes; then
+	      firstobj="$1 "
+	      shift
+	    fi
+	    for obj
+	    do
+	      $ECHO "$obj" >> $output
+	    done
+	    delfiles="$delfiles $output"
+	    output=$firstobj\"$file_list_spec$output\"
+	  else
+	    if test -n "$save_libobjs"; then
+	      func_verbose "creating reloadable object files..."
+	      output=$output_objdir/$output_la-${k}.$objext
+	      eval "test_cmds=\"$reload_cmds\""
+	      func_len " $test_cmds"
+	      len0=$func_len_result
+	      len=$len0
+
+	      # Loop over the list of objects to be linked.
+	      for obj in $save_libobjs
+	      do
+		func_len " $obj"
+		func_arith $len + $func_len_result
+		len=$func_arith_result
+		if test "X$objlist" = X ||
+		   test "$len" -lt "$max_cmd_len"; then
+		  func_append objlist " $obj"
+		else
+		  # The command $test_cmds is almost too long, add a
+		  # command to the queue.
+		  if test "$k" -eq 1 ; then
+		    # The first file doesn't have a previous command to add.
+		    reload_objs=$objlist
+		    eval "concat_cmds=\"$reload_cmds\""
+		  else
+		    # All subsequent reloadable object files will link in
+		    # the last one created.
+		    reload_objs="$objlist $last_robj"
+		    eval "concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\""
+		  fi
+		  last_robj=$output_objdir/$output_la-${k}.$objext
+		  func_arith $k + 1
+		  k=$func_arith_result
+		  output=$output_objdir/$output_la-${k}.$objext
+		  objlist=" $obj"
+		  func_len " $last_robj"
+		  func_arith $len0 + $func_len_result
+		  len=$func_arith_result
+		fi
+	      done
+	      # Handle the remaining objects by creating one last
+	      # reloadable object file.  All subsequent reloadable object
+	      # files will link in the last one created.
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      reload_objs="$objlist $last_robj"
+	      eval "concat_cmds=\"\${concat_cmds}$reload_cmds\""
+	      if test -n "$last_robj"; then
+	        eval "concat_cmds=\"\${concat_cmds}~\$RM $last_robj\""
+	      fi
+	      delfiles="$delfiles $output"
+
+	    else
+	      output=
+	    fi
+
+	    if ${skipped_export-false}; then
+	      func_verbose "generating symbol list for \`$libname.la'"
+	      export_symbols="$output_objdir/$libname.exp"
+	      $opt_dry_run || $RM $export_symbols
+	      libobjs=$output
+	      # Append the command to create the export file.
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      eval "concat_cmds=\"\$concat_cmds$export_symbols_cmds\""
+	      if test -n "$last_robj"; then
+		eval "concat_cmds=\"\$concat_cmds~\$RM $last_robj\""
+	      fi
+	    fi
+
+	    test -n "$save_libobjs" &&
+	      func_verbose "creating a temporary reloadable object file: $output"
+
+	    # Loop through the commands generated above and execute them.
+	    save_ifs="$IFS"; IFS='~'
+	    for cmd in $concat_cmds; do
+	      IFS="$save_ifs"
+	      $opt_silent || {
+		  func_quote_for_expand "$cmd"
+		  eval "func_echo $func_quote_for_expand_result"
+	      }
+	      $opt_dry_run || eval "$cmd" || {
+		lt_exit=$?
+
+		# Restore the uninstalled library and exit
+		if test "$mode" = relink; then
+		  ( cd "$output_objdir" && \
+		    $RM "${realname}T" && \
+		    $MV "${realname}U" "$realname" )
+		fi
+
+		exit $lt_exit
+	      }
+	    done
+	    IFS="$save_ifs"
+
+	    if test -n "$export_symbols_regex" && ${skipped_export-false}; then
+	      func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+	      func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+	    fi
+	  fi
+
+          if ${skipped_export-false}; then
+	    if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	      tmp_export_symbols="$export_symbols"
+	      test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+	      $opt_dry_run || $ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"
+	    fi
+
+	    if test -n "$orig_export_symbols"; then
+	      # The given exports_symbols file has to be filtered, so filter it.
+	      func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+	      # FIXME: $output_objdir/$libname.filter potentially contains lots of
+	      # 's' commands which not all seds can handle. GNU sed should be fine
+	      # though. Also, the filter scales superlinearly with the number of
+	      # global variables. join(1) would be nice here, but unfortunately
+	      # isn't a blessed tool.
+	      $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+	      delfiles="$delfiles $export_symbols $output_objdir/$libname.filter"
+	      export_symbols=$output_objdir/$libname.def
+	      $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+	    fi
+	  fi
+
+	  libobjs=$output
+	  # Restore the value of output.
+	  output=$save_output
+
+	  if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then
+	    eval "libobjs=\"\$libobjs $whole_archive_flag_spec\""
+	    test "X$libobjs" = "X " && libobjs=
+	  fi
+	  # Expand the library linking commands again to reset the
+	  # value of $libobjs for piecewise linking.
+
+	  # Do each of the archive commands.
+	  if test "$module" = yes && test -n "$module_cmds" ; then
+	    if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+	      cmds=$module_expsym_cmds
+	    else
+	      cmds=$module_cmds
+	    fi
+	  else
+	    if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+	      cmds=$archive_expsym_cmds
+	    else
+	      cmds=$archive_cmds
+	    fi
+	  fi
+	fi
+
+	if test -n "$delfiles"; then
+	  # Append the command to remove temporary files to $cmds.
+	  eval "cmds=\"\$cmds~\$RM $delfiles\""
+	fi
+
+	# Add any objects from preloaded convenience libraries
+	if test -n "$dlprefiles"; then
+	  gentop="$output_objdir/${outputname}x"
+	  generated="$generated $gentop"
+
+	  func_extract_archives $gentop $dlprefiles
+	  libobjs="$libobjs $func_extract_archives_result"
+	  test "X$libobjs" = "X " && libobjs=
+	fi
+
+	save_ifs="$IFS"; IFS='~'
+	for cmd in $cmds; do
+	  IFS="$save_ifs"
+	  eval "cmd=\"$cmd\""
+	  $opt_silent || {
+	    func_quote_for_expand "$cmd"
+	    eval "func_echo $func_quote_for_expand_result"
+	  }
+	  $opt_dry_run || eval "$cmd" || {
+	    lt_exit=$?
+
+	    # Restore the uninstalled library and exit
+	    if test "$mode" = relink; then
+	      ( cd "$output_objdir" && \
+	        $RM "${realname}T" && \
+		$MV "${realname}U" "$realname" )
+	    fi
+
+	    exit $lt_exit
+	  }
+	done
+	IFS="$save_ifs"
+
+	# Restore the uninstalled library and exit
+	if test "$mode" = relink; then
+	  $opt_dry_run || (cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname) || exit $?
+
+	  if test -n "$convenience"; then
+	    if test -z "$whole_archive_flag_spec"; then
+	      func_show_eval '${RM}r "$gentop"'
+	    fi
+	  fi
+
+	  exit $EXIT_SUCCESS
+	fi
+
+	# Create links to the real library.
+	for linkname in $linknames; do
+	  if test "$realname" != "$linkname"; then
+	    func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?'
+	  fi
+	done
+
+	# If -module or -export-dynamic was specified, set the dlname.
+	if test "$module" = yes || test "$export_dynamic" = yes; then
+	  # On all known operating systems, these are identical.
+	  dlname="$soname"
+	fi
+      fi
+      ;;
+
+    obj)
+      if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+	func_warning "\`-dlopen' is ignored for objects"
+      fi
+
+      case " $deplibs" in
+      *\ -l* | *\ -L*)
+	func_warning "\`-l' and \`-L' are ignored for objects" ;;
+      esac
+
+      test -n "$rpath" && \
+	func_warning "\`-rpath' is ignored for objects"
+
+      test -n "$xrpath" && \
+	func_warning "\`-R' is ignored for objects"
+
+      test -n "$vinfo" && \
+	func_warning "\`-version-info' is ignored for objects"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for objects"
+
+      case $output in
+      *.lo)
+	test -n "$objs$old_deplibs" && \
+	  func_fatal_error "cannot build library object \`$output' from non-libtool objects"
+
+	libobj=$output
+	func_lo2o "$libobj"
+	obj=$func_lo2o_result
+	;;
+      *)
+	libobj=
+	obj="$output"
+	;;
+      esac
+
+      # Delete the old objects.
+      $opt_dry_run || $RM $obj $libobj
+
+      # Objects from convenience libraries.  This assumes
+      # single-version convenience libraries.  Whenever we create
+      # different ones for PIC/non-PIC, this we'll have to duplicate
+      # the extraction.
+      reload_conv_objs=
+      gentop=
+      # reload_cmds runs $LD directly, so let us get rid of
+      # -Wl from whole_archive_flag_spec and hope we can get by with
+      # turning comma into space..
+      wl=
+
+      if test -n "$convenience"; then
+	if test -n "$whole_archive_flag_spec"; then
+	  eval "tmp_whole_archive_flags=\"$whole_archive_flag_spec\""
+	  reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'`
+	else
+	  gentop="$output_objdir/${obj}x"
+	  generated="$generated $gentop"
+
+	  func_extract_archives $gentop $convenience
+	  reload_conv_objs="$reload_objs $func_extract_archives_result"
+	fi
+      fi
+
+      # Create the old-style object.
+      reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
+
+      output="$obj"
+      func_execute_cmds "$reload_cmds" 'exit $?'
+
+      # Exit if we aren't doing a library object file.
+      if test -z "$libobj"; then
+	if test -n "$gentop"; then
+	  func_show_eval '${RM}r "$gentop"'
+	fi
+
+	exit $EXIT_SUCCESS
+      fi
+
+      if test "$build_libtool_libs" != yes; then
+	if test -n "$gentop"; then
+	  func_show_eval '${RM}r "$gentop"'
+	fi
+
+	# Create an invalid libtool object if no PIC, so that we don't
+	# accidentally link it into a program.
+	# $show "echo timestamp > $libobj"
+	# $opt_dry_run || echo timestamp > $libobj || exit $?
+	exit $EXIT_SUCCESS
+      fi
+
+      if test -n "$pic_flag" || test "$pic_mode" != default; then
+	# Only do commands if we really have different PIC objects.
+	reload_objs="$libobjs $reload_conv_objs"
+	output="$libobj"
+	func_execute_cmds "$reload_cmds" 'exit $?'
+      fi
+
+      if test -n "$gentop"; then
+	func_show_eval '${RM}r "$gentop"'
+      fi
+
+      exit $EXIT_SUCCESS
+      ;;
+
+    prog)
+      case $host in
+	*cygwin*) func_stripname '' '.exe' "$output"
+	          output=$func_stripname_result.exe;;
+      esac
+      test -n "$vinfo" && \
+	func_warning "\`-version-info' is ignored for programs"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for programs"
+
+      test "$preload" = yes \
+        && test "$dlopen_support" = unknown \
+	&& test "$dlopen_self" = unknown \
+	&& test "$dlopen_self_static" = unknown && \
+	  func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support."
+
+      case $host in
+      *-*-rhapsody* | *-*-darwin1.[012])
+	# On Rhapsody replace the C library is the System framework
+	compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'`
+	finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'`
+	;;
+      esac
+
+      case $host in
+      *-*-darwin*)
+	# Don't allow lazy linking, it breaks C++ global constructors
+	# But is supposedly fixed on 10.4 or later (yay!).
+	if test "$tagname" = CXX ; then
+	  case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
+	    10.[0123])
+	      compile_command="$compile_command ${wl}-bind_at_load"
+	      finalize_command="$finalize_command ${wl}-bind_at_load"
+	    ;;
+	  esac
+	fi
+	# Time to change all our "foo.ltframework" stuff back to "-framework foo"
+	compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	;;
+      esac
+
+
+      # move library search paths that coincide with paths to not yet
+      # installed libraries to the beginning of the library search list
+      new_libs=
+      for path in $notinst_path; do
+	case " $new_libs " in
+	*" -L$path/$objdir "*) ;;
+	*)
+	  case " $compile_deplibs " in
+	  *" -L$path/$objdir "*)
+	    new_libs="$new_libs -L$path/$objdir" ;;
+	  esac
+	  ;;
+	esac
+      done
+      for deplib in $compile_deplibs; do
+	case $deplib in
+	-L*)
+	  case " $new_libs " in
+	  *" $deplib "*) ;;
+	  *) new_libs="$new_libs $deplib" ;;
+	  esac
+	  ;;
+	*) new_libs="$new_libs $deplib" ;;
+	esac
+      done
+      compile_deplibs="$new_libs"
+
+
+      compile_command="$compile_command $compile_deplibs"
+      finalize_command="$finalize_command $finalize_deplibs"
+
+      if test -n "$rpath$xrpath"; then
+	# If the user specified any rpath flags, then add them.
+	for libdir in $rpath $xrpath; do
+	  # This is the magic to use -rpath.
+	  case "$finalize_rpath " in
+	  *" $libdir "*) ;;
+	  *) finalize_rpath="$finalize_rpath $libdir" ;;
+	  esac
+	done
+      fi
+
+      # Now hardcode the library paths
+      rpath=
+      hardcode_libdirs=
+      for libdir in $compile_rpath $finalize_rpath; do
+	if test -n "$hardcode_libdir_flag_spec"; then
+	  if test -n "$hardcode_libdir_separator"; then
+	    if test -z "$hardcode_libdirs"; then
+	      hardcode_libdirs="$libdir"
+	    else
+	      # Just accumulate the unique libdirs.
+	      case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+	      *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		;;
+	      *)
+		hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+		;;
+	      esac
+	    fi
+	  else
+	    eval "flag=\"$hardcode_libdir_flag_spec\""
+	    rpath="$rpath $flag"
+	  fi
+	elif test -n "$runpath_var"; then
+	  case "$perm_rpath " in
+	  *" $libdir "*) ;;
+	  *) perm_rpath="$perm_rpath $libdir" ;;
+	  esac
+	fi
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	  testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
+	  case :$dllsearchpath: in
+	  *":$libdir:"*) ;;
+	  ::) dllsearchpath=$libdir;;
+	  *) dllsearchpath="$dllsearchpath:$libdir";;
+	  esac
+	  case :$dllsearchpath: in
+	  *":$testbindir:"*) ;;
+	  ::) dllsearchpath=$testbindir;;
+	  *) dllsearchpath="$dllsearchpath:$testbindir";;
+	  esac
+	  ;;
+	esac
+      done
+      # Substitute the hardcoded libdirs into the rpath.
+      if test -n "$hardcode_libdir_separator" &&
+	 test -n "$hardcode_libdirs"; then
+	libdir="$hardcode_libdirs"
+	eval "rpath=\" $hardcode_libdir_flag_spec\""
+      fi
+      compile_rpath="$rpath"
+
+      rpath=
+      hardcode_libdirs=
+      for libdir in $finalize_rpath; do
+	if test -n "$hardcode_libdir_flag_spec"; then
+	  if test -n "$hardcode_libdir_separator"; then
+	    if test -z "$hardcode_libdirs"; then
+	      hardcode_libdirs="$libdir"
+	    else
+	      # Just accumulate the unique libdirs.
+	      case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+	      *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		;;
+	      *)
+		hardcode_libdirs="$hardcode_libdirs$hardcode_libdir_separator$libdir"
+		;;
+	      esac
+	    fi
+	  else
+	    eval "flag=\"$hardcode_libdir_flag_spec\""
+	    rpath="$rpath $flag"
+	  fi
+	elif test -n "$runpath_var"; then
+	  case "$finalize_perm_rpath " in
+	  *" $libdir "*) ;;
+	  *) finalize_perm_rpath="$finalize_perm_rpath $libdir" ;;
+	  esac
+	fi
+      done
+      # Substitute the hardcoded libdirs into the rpath.
+      if test -n "$hardcode_libdir_separator" &&
+	 test -n "$hardcode_libdirs"; then
+	libdir="$hardcode_libdirs"
+	eval "rpath=\" $hardcode_libdir_flag_spec\""
+      fi
+      finalize_rpath="$rpath"
+
+      if test -n "$libobjs" && test "$build_old_libs" = yes; then
+	# Transform all the library objects into standard objects.
+	compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
+      fi
+
+      func_generate_dlsyms "$outputname" "@PROGRAM@" "no"
+
+      # template prelinking step
+      if test -n "$prelink_cmds"; then
+	func_execute_cmds "$prelink_cmds" 'exit $?'
+      fi
+
+      wrappers_required=yes
+      case $host in
+      *cegcc* | *mingw32ce*)
+        # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway.
+        wrappers_required=no
+        ;;
+      *cygwin* | *mingw* )
+        if test "$build_libtool_libs" != yes; then
+          wrappers_required=no
+        fi
+        ;;
+      *)
+        if test "$need_relink" = no || test "$build_libtool_libs" != yes; then
+          wrappers_required=no
+        fi
+        ;;
+      esac
+      if test "$wrappers_required" = no; then
+	# Replace the output file specification.
+	compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
+	link_command="$compile_command$compile_rpath"
+
+	# We have no uninstalled library dependencies, so finalize right now.
+	exit_status=0
+	func_show_eval "$link_command" 'exit_status=$?'
+
+	# Delete the generated files.
+	if test -f "$output_objdir/${outputname}S.${objext}"; then
+	  func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
+	fi
+
+	exit $exit_status
+      fi
+
+      if test -n "$compile_shlibpath$finalize_shlibpath"; then
+	compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command"
+      fi
+      if test -n "$finalize_shlibpath"; then
+	finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command"
+      fi
+
+      compile_var=
+      finalize_var=
+      if test -n "$runpath_var"; then
+	if test -n "$perm_rpath"; then
+	  # We should set the runpath_var.
+	  rpath=
+	  for dir in $perm_rpath; do
+	    rpath="$rpath$dir:"
+	  done
+	  compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
+	fi
+	if test -n "$finalize_perm_rpath"; then
+	  # We should set the runpath_var.
+	  rpath=
+	  for dir in $finalize_perm_rpath; do
+	    rpath="$rpath$dir:"
+	  done
+	  finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
+	fi
+      fi
+
+      if test "$no_install" = yes; then
+	# We don't need to create a wrapper script.
+	link_command="$compile_var$compile_command$compile_rpath"
+	# Replace the output file specification.
+	link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
+	# Delete the old output file.
+	$opt_dry_run || $RM $output
+	# Link the executable and exit
+	func_show_eval "$link_command" 'exit $?'
+	exit $EXIT_SUCCESS
+      fi
+
+      if test "$hardcode_action" = relink; then
+	# Fast installation is not supported
+	link_command="$compile_var$compile_command$compile_rpath"
+	relink_command="$finalize_var$finalize_command$finalize_rpath"
+
+	func_warning "this platform does not like uninstalled shared libraries"
+	func_warning "\`$output' will be relinked during installation"
+      else
+	if test "$fast_install" != no; then
+	  link_command="$finalize_var$compile_command$finalize_rpath"
+	  if test "$fast_install" = yes; then
+	    relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'`
+	  else
+	    # fast_install is set to needless
+	    relink_command=
+	  fi
+	else
+	  link_command="$compile_var$compile_command$compile_rpath"
+	  relink_command="$finalize_var$finalize_command$finalize_rpath"
+	fi
+      fi
+
+      # Replace the output file specification.
+      link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'`
+
+      # Delete the old output files.
+      $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname
+
+      func_show_eval "$link_command" 'exit $?'
+
+      # Now create the wrapper script.
+      func_verbose "creating $output"
+
+      # Quote the relink command for shipping.
+      if test -n "$relink_command"; then
+	# Preserve any variables that may affect compiler behavior
+	for var in $variables_saved_for_relink; do
+	  if eval test -z \"\${$var+set}\"; then
+	    relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+	  elif eval var_value=\$$var; test -z "$var_value"; then
+	    relink_command="$var=; export $var; $relink_command"
+	  else
+	    func_quote_for_eval "$var_value"
+	    relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	  fi
+	done
+	relink_command="(cd `pwd`; $relink_command)"
+	relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+      fi
+
+      # Only actually do things if not in dry run mode.
+      $opt_dry_run || {
+	# win32 will think the script is a binary if it has
+	# a .exe suffix, so we strip it off here.
+	case $output in
+	  *.exe) func_stripname '' '.exe' "$output"
+	         output=$func_stripname_result ;;
+	esac
+	# test for cygwin because mv fails w/o .exe extensions
+	case $host in
+	  *cygwin*)
+	    exeext=.exe
+	    func_stripname '' '.exe' "$outputname"
+	    outputname=$func_stripname_result ;;
+	  *) exeext= ;;
+	esac
+	case $host in
+	  *cygwin* | *mingw* )
+	    func_dirname_and_basename "$output" "" "."
+	    output_name=$func_basename_result
+	    output_path=$func_dirname_result
+	    cwrappersource="$output_path/$objdir/lt-$output_name.c"
+	    cwrapper="$output_path/$output_name.exe"
+	    $RM $cwrappersource $cwrapper
+	    trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
+
+	    func_emit_cwrapperexe_src > $cwrappersource
+
+	    # The wrapper executable is built using the $host compiler,
+	    # because it contains $host paths and files. If cross-
+	    # compiling, it, like the target executable, must be
+	    # executed on the $host or under an emulation environment.
+	    $opt_dry_run || {
+	      $LTCC $LTCFLAGS -o $cwrapper $cwrappersource
+	      $STRIP $cwrapper
+	    }
+
+	    # Now, create the wrapper script for func_source use:
+	    func_ltwrapper_scriptname $cwrapper
+	    $RM $func_ltwrapper_scriptname_result
+	    trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15
+	    $opt_dry_run || {
+	      # note: this script will not be executed, so do not chmod.
+	      if test "x$build" = "x$host" ; then
+		$cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
+	      else
+		func_emit_wrapper no > $func_ltwrapper_scriptname_result
+	      fi
+	    }
+	  ;;
+	  * )
+	    $RM $output
+	    trap "$RM $output; exit $EXIT_FAILURE" 1 2 15
+
+	    func_emit_wrapper no > $output
+	    chmod +x $output
+	  ;;
+	esac
+      }
+      exit $EXIT_SUCCESS
+      ;;
+    esac
+
+    # See if we need to build an old-fashioned archive.
+    for oldlib in $oldlibs; do
+
+      if test "$build_libtool_libs" = convenience; then
+	oldobjs="$libobjs_save $symfileobj"
+	addlibs="$convenience"
+	build_libtool_libs=no
+      else
+	if test "$build_libtool_libs" = module; then
+	  oldobjs="$libobjs_save"
+	  build_libtool_libs=no
+	else
+	  oldobjs="$old_deplibs $non_pic_objects"
+	  if test "$preload" = yes && test -f "$symfileobj"; then
+	    oldobjs="$oldobjs $symfileobj"
+	  fi
+	fi
+	addlibs="$old_convenience"
+      fi
+
+      if test -n "$addlibs"; then
+	gentop="$output_objdir/${outputname}x"
+	generated="$generated $gentop"
+
+	func_extract_archives $gentop $addlibs
+	oldobjs="$oldobjs $func_extract_archives_result"
+      fi
+
+      # Do each command in the archive commands.
+      if test -n "$old_archive_from_new_cmds" && test "$build_libtool_libs" = yes; then
+	cmds=$old_archive_from_new_cmds
+      else
+
+	# Add any objects from preloaded convenience libraries
+	if test -n "$dlprefiles"; then
+	  gentop="$output_objdir/${outputname}x"
+	  generated="$generated $gentop"
+
+	  func_extract_archives $gentop $dlprefiles
+	  oldobjs="$oldobjs $func_extract_archives_result"
+	fi
+
+	# POSIX demands no paths to be encoded in archives.  We have
+	# to avoid creating archives with duplicate basenames if we
+	# might have to extract them afterwards, e.g., when creating a
+	# static archive out of a convenience library, or when linking
+	# the entirety of a libtool archive into another (currently
+	# not supported by libtool).
+	if (for obj in $oldobjs
+	    do
+	      func_basename "$obj"
+	      $ECHO "$func_basename_result"
+	    done | sort | sort -uc >/dev/null 2>&1); then
+	  :
+	else
+	  echo "copying selected object files to avoid basename conflicts..."
+	  gentop="$output_objdir/${outputname}x"
+	  generated="$generated $gentop"
+	  func_mkdir_p "$gentop"
+	  save_oldobjs=$oldobjs
+	  oldobjs=
+	  counter=1
+	  for obj in $save_oldobjs
+	  do
+	    func_basename "$obj"
+	    objbase="$func_basename_result"
+	    case " $oldobjs " in
+	    " ") oldobjs=$obj ;;
+	    *[\ /]"$objbase "*)
+	      while :; do
+		# Make sure we don't pick an alternate name that also
+		# overlaps.
+		newobj=lt$counter-$objbase
+		func_arith $counter + 1
+		counter=$func_arith_result
+		case " $oldobjs " in
+		*[\ /]"$newobj "*) ;;
+		*) if test ! -f "$gentop/$newobj"; then break; fi ;;
+		esac
+	      done
+	      func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
+	      oldobjs="$oldobjs $gentop/$newobj"
+	      ;;
+	    *) oldobjs="$oldobjs $obj" ;;
+	    esac
+	  done
+	fi
+	eval "cmds=\"$old_archive_cmds\""
+
+	func_len " $cmds"
+	len=$func_len_result
+	if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+	  cmds=$old_archive_cmds
+	else
+	  # the command line is too long to link in one step, link in parts
+	  func_verbose "using piecewise archive linking..."
+	  save_RANLIB=$RANLIB
+	  RANLIB=:
+	  objlist=
+	  concat_cmds=
+	  save_oldobjs=$oldobjs
+	  oldobjs=
+	  # Is there a better way of finding the last object in the list?
+	  for obj in $save_oldobjs
+	  do
+	    last_oldobj=$obj
+	  done
+	  eval "test_cmds=\"$old_archive_cmds\""
+	  func_len " $test_cmds"
+	  len0=$func_len_result
+	  len=$len0
+	  for obj in $save_oldobjs
+	  do
+	    func_len " $obj"
+	    func_arith $len + $func_len_result
+	    len=$func_arith_result
+	    func_append objlist " $obj"
+	    if test "$len" -lt "$max_cmd_len"; then
+	      :
+	    else
+	      # the above command should be used before it gets too long
+	      oldobjs=$objlist
+	      if test "$obj" = "$last_oldobj" ; then
+		RANLIB=$save_RANLIB
+	      fi
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      eval "concat_cmds=\"\${concat_cmds}$old_archive_cmds\""
+	      objlist=
+	      len=$len0
+	    fi
+	  done
+	  RANLIB=$save_RANLIB
+	  oldobjs=$objlist
+	  if test "X$oldobjs" = "X" ; then
+	    eval "cmds=\"\$concat_cmds\""
+	  else
+	    eval "cmds=\"\$concat_cmds~\$old_archive_cmds\""
+	  fi
+	fi
+      fi
+      func_execute_cmds "$cmds" 'exit $?'
+    done
+
+    test -n "$generated" && \
+      func_show_eval "${RM}r$generated"
+
+    # Now create the libtool archive.
+    case $output in
+    *.la)
+      old_library=
+      test "$build_old_libs" = yes && old_library="$libname.$libext"
+      func_verbose "creating $output"
+
+      # Preserve any variables that may affect compiler behavior
+      for var in $variables_saved_for_relink; do
+	if eval test -z \"\${$var+set}\"; then
+	  relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+	elif eval var_value=\$$var; test -z "$var_value"; then
+	  relink_command="$var=; export $var; $relink_command"
+	else
+	  func_quote_for_eval "$var_value"
+	  relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	fi
+      done
+      # Quote the link command for shipping.
+      relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+      relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+      if test "$hardcode_automatic" = yes ; then
+	relink_command=
+      fi
+
+      # Only create the output if not a dry run.
+      $opt_dry_run || {
+	for installed in no yes; do
+	  if test "$installed" = yes; then
+	    if test -z "$install_libdir"; then
+	      break
+	    fi
+	    output="$output_objdir/$outputname"i
+	    # Replace all uninstalled libtool libraries with the installed ones
+	    newdependency_libs=
+	    for deplib in $dependency_libs; do
+	      case $deplib in
+	      *.la)
+		func_basename "$deplib"
+		name="$func_basename_result"
+		libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$deplib' is not a valid libtool archive"
+		newdependency_libs="$newdependency_libs $libdir/$name"
+		;;
+	      *) newdependency_libs="$newdependency_libs $deplib" ;;
+	      esac
+	    done
+	    dependency_libs="$newdependency_libs"
+	    newdlfiles=
+
+	    for lib in $dlfiles; do
+	      case $lib in
+	      *.la)
+	        func_basename "$lib"
+		name="$func_basename_result"
+		libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$lib' is not a valid libtool archive"
+		newdlfiles="$newdlfiles $libdir/$name"
+		;;
+	      *) newdlfiles="$newdlfiles $lib" ;;
+	      esac
+	    done
+	    dlfiles="$newdlfiles"
+	    newdlprefiles=
+	    for lib in $dlprefiles; do
+	      case $lib in
+	      *.la)
+		# Only pass preopened files to the pseudo-archive (for
+		# eventual linking with the app. that links it) if we
+		# didn't already link the preopened objects directly into
+		# the library:
+		func_basename "$lib"
+		name="$func_basename_result"
+		libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$lib' is not a valid libtool archive"
+		newdlprefiles="$newdlprefiles $libdir/$name"
+		;;
+	      esac
+	    done
+	    dlprefiles="$newdlprefiles"
+	  else
+	    newdlfiles=
+	    for lib in $dlfiles; do
+	      case $lib in
+		[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+		*) abs=`pwd`"/$lib" ;;
+	      esac
+	      newdlfiles="$newdlfiles $abs"
+	    done
+	    dlfiles="$newdlfiles"
+	    newdlprefiles=
+	    for lib in $dlprefiles; do
+	      case $lib in
+		[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+		*) abs=`pwd`"/$lib" ;;
+	      esac
+	      newdlprefiles="$newdlprefiles $abs"
+	    done
+	    dlprefiles="$newdlprefiles"
+	  fi
+	  $RM $output
+	  # place dlname in correct position for cygwin
+	  # In fact, it would be nice if we could use this code for all target
+	  # systems that can't hard-code library paths into their executables
+	  # and that have no shared library path variable independent of PATH,
+	  # but it turns out we can't easily determine that from inspecting
+	  # libtool variables, so we have to hard-code the OSs to which it
+	  # applies here; at the moment, that means platforms that use the PE
+	  # object format with DLL files.  See the long comment at the top of
+	  # tests/bindir.at for full details.
+	  tdlname=$dlname
+	  case $host,$output,$installed,$module,$dlname in
+	    *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll)
+	      # If a -bindir argument was supplied, place the dll there.
+	      if test "x$bindir" != x ;
+	      then
+		func_relative_path "$install_libdir" "$bindir"
+		tdlname=$func_relative_path_result$dlname
+	      else
+		# Otherwise fall back on heuristic.
+		tdlname=../bin/$dlname
+	      fi
+	      ;;
+	  esac
+	  $ECHO > $output "\
+# $outputname - a libtool library file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='$tdlname'
+
+# Names of this library.
+library_names='$library_names'
+
+# The name of the static archive.
+old_library='$old_library'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags='$new_inherited_linker_flags'
+
+# Libraries that this one depends upon.
+dependency_libs='$dependency_libs'
+
+# Names of additional weak libraries provided by this library
+weak_library_names='$weak_libs'
+
+# Version information for $libname.
+current=$current
+age=$age
+revision=$revision
+
+# Is this an already installed library?
+installed=$installed
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=$module
+
+# Files to dlopen/dlpreopen
+dlopen='$dlfiles'
+dlpreopen='$dlprefiles'
+
+# Directory that this library needs to be installed in:
+libdir='$install_libdir'"
+	  if test "$installed" = no && test "$need_relink" = yes; then
+	    $ECHO >> $output "\
+relink_command=\"$relink_command\""
+	  fi
+	done
+      }
+
+      # Do a symbolic link so that the libtool archive can be found in
+      # LD_LIBRARY_PATH before the program is installed.
+      func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?'
+      ;;
+    esac
+    exit $EXIT_SUCCESS
+}
+
+{ test "$mode" = link || test "$mode" = relink; } &&
+    func_mode_link ${1+"$@"}
+
+
+# func_mode_uninstall arg...
+func_mode_uninstall ()
+{
+    $opt_debug
+    RM="$nonopt"
+    files=
+    rmforce=
+    exit_status=0
+
+    # This variable tells wrapper scripts just to set variables rather
+    # than running their programs.
+    libtool_install_magic="$magic"
+
+    for arg
+    do
+      case $arg in
+      -f) RM="$RM $arg"; rmforce=yes ;;
+      -*) RM="$RM $arg" ;;
+      *) files="$files $arg" ;;
+      esac
+    done
+
+    test -z "$RM" && \
+      func_fatal_help "you must specify an RM program"
+
+    rmdirs=
+
+    origobjdir="$objdir"
+    for file in $files; do
+      func_dirname "$file" "" "."
+      dir="$func_dirname_result"
+      if test "X$dir" = X.; then
+	objdir="$origobjdir"
+      else
+	objdir="$dir/$origobjdir"
+      fi
+      func_basename "$file"
+      name="$func_basename_result"
+      test "$mode" = uninstall && objdir="$dir"
+
+      # Remember objdir for removal later, being careful to avoid duplicates
+      if test "$mode" = clean; then
+	case " $rmdirs " in
+	  *" $objdir "*) ;;
+	  *) rmdirs="$rmdirs $objdir" ;;
+	esac
+      fi
+
+      # Don't error if the file doesn't exist and rm -f was used.
+      if { test -L "$file"; } >/dev/null 2>&1 ||
+	 { test -h "$file"; } >/dev/null 2>&1 ||
+	 test -f "$file"; then
+	:
+      elif test -d "$file"; then
+	exit_status=1
+	continue
+      elif test "$rmforce" = yes; then
+	continue
+      fi
+
+      rmfiles="$file"
+
+      case $name in
+      *.la)
+	# Possibly a libtool archive, so verify it.
+	if func_lalib_p "$file"; then
+	  func_source $dir/$name
+
+	  # Delete the libtool libraries and symlinks.
+	  for n in $library_names; do
+	    rmfiles="$rmfiles $objdir/$n"
+	  done
+	  test -n "$old_library" && rmfiles="$rmfiles $objdir/$old_library"
+
+	  case "$mode" in
+	  clean)
+	    case "  $library_names " in
+	    # "  " in the beginning catches empty $dlname
+	    *" $dlname "*) ;;
+	    *) rmfiles="$rmfiles $objdir/$dlname" ;;
+	    esac
+	    test -n "$libdir" && rmfiles="$rmfiles $objdir/$name $objdir/${name}i"
+	    ;;
+	  uninstall)
+	    if test -n "$library_names"; then
+	      # Do each command in the postuninstall commands.
+	      func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+	    fi
+
+	    if test -n "$old_library"; then
+	      # Do each command in the old_postuninstall commands.
+	      func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+	    fi
+	    # FIXME: should reinstall the best remaining shared library.
+	    ;;
+	  esac
+	fi
+	;;
+
+      *.lo)
+	# Possibly a libtool object, so verify it.
+	if func_lalib_p "$file"; then
+
+	  # Read the .lo file
+	  func_source $dir/$name
+
+	  # Add PIC object to the list of files to remove.
+	  if test -n "$pic_object" &&
+	     test "$pic_object" != none; then
+	    rmfiles="$rmfiles $dir/$pic_object"
+	  fi
+
+	  # Add non-PIC object to the list of files to remove.
+	  if test -n "$non_pic_object" &&
+	     test "$non_pic_object" != none; then
+	    rmfiles="$rmfiles $dir/$non_pic_object"
+	  fi
+	fi
+	;;
+
+      *)
+	if test "$mode" = clean ; then
+	  noexename=$name
+	  case $file in
+	  *.exe)
+	    func_stripname '' '.exe' "$file"
+	    file=$func_stripname_result
+	    func_stripname '' '.exe' "$name"
+	    noexename=$func_stripname_result
+	    # $file with .exe has already been added to rmfiles,
+	    # add $file without .exe
+	    rmfiles="$rmfiles $file"
+	    ;;
+	  esac
+	  # Do a test to see if this is a libtool program.
+	  if func_ltwrapper_p "$file"; then
+	    if func_ltwrapper_executable_p "$file"; then
+	      func_ltwrapper_scriptname "$file"
+	      relink_command=
+	      func_source $func_ltwrapper_scriptname_result
+	      rmfiles="$rmfiles $func_ltwrapper_scriptname_result"
+	    else
+	      relink_command=
+	      func_source $dir/$noexename
+	    fi
+
+	    # note $name still contains .exe if it was in $file originally
+	    # as does the version of $file that was added into $rmfiles
+	    rmfiles="$rmfiles $objdir/$name $objdir/${name}S.${objext}"
+	    if test "$fast_install" = yes && test -n "$relink_command"; then
+	      rmfiles="$rmfiles $objdir/lt-$name"
+	    fi
+	    if test "X$noexename" != "X$name" ; then
+	      rmfiles="$rmfiles $objdir/lt-${noexename}.c"
+	    fi
+	  fi
+	fi
+	;;
+      esac
+      func_show_eval "$RM $rmfiles" 'exit_status=1'
+    done
+    objdir="$origobjdir"
+
+    # Try to remove the ${objdir}s in the directories where we deleted files
+    for dir in $rmdirs; do
+      if test -d "$dir"; then
+	func_show_eval "rmdir $dir >/dev/null 2>&1"
+      fi
+    done
+
+    exit $exit_status
+}
+
+{ test "$mode" = uninstall || test "$mode" = clean; } &&
+    func_mode_uninstall ${1+"$@"}
+
+test -z "$mode" && {
+  help="$generic_help"
+  func_fatal_help "you must specify a MODE"
+}
+
+test -z "$exec_cmd" && \
+  func_fatal_help "invalid operation mode \`$mode'"
+
+if test -n "$exec_cmd"; then
+  eval exec "$exec_cmd"
+  exit $EXIT_FAILURE
+fi
+
+exit $exit_status
+
+
+# The TAGs below are defined such that we never get into a situation
+# in which we disable both kinds of libraries.  Given conflicting
+# choices, we go for a static library, that is the most portable,
+# since we can't tell whether shared libraries were disabled because
+# the user asked for that or because the platform doesn't support
+# them.  This is particularly important on AIX, because we don't
+# support having both static and shared libraries enabled at the same
+# time on that platform, so we default to a shared-only configuration.
+# If a disable-shared tag is given, we'll fallback to a static-only
+# configuration.  But we'll never go from static-only to shared-only.
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
+build_libtool_libs=no
+build_old_libs=yes
+# ### END LIBTOOL TAG CONFIG: disable-shared
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-static
+build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac`
+# ### END LIBTOOL TAG CONFIG: disable-static
+
+# Local Variables:
+# mode:shell-script
+# sh-indentation:2
+# End:
+# vi:sw=2
+
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ltoptions.m4 b/fluent-bit/lib/libbacktrace-8602fda/ltoptions.m4
new file mode 100644
index 000000000..5ef12ced2
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ltoptions.m4
@@ -0,0 +1,369 @@
+# Helper functions for option handling.                    -*- Autoconf -*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation,
+#   Inc.
+#   Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it.  Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+        _LT_MANGLE_DEFUN([$1], [$2]),
+    [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+	    [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+		      [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME.  If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+    [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+  dnl
+  dnl Simply set some default values (i.e off) if boolean options were not
+  dnl specified:
+  _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+  ])
+  _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+  ])
+  dnl
+  dnl If no reference was made to various pairs of opposing options, then
+  dnl we run the default mode handler for the pair.  For example, if neither
+  dnl `shared' nor `disable-shared' was passed, we enable building of shared
+  dnl archives by default:
+  _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+  _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+  		   [_LT_ENABLE_FAST_INSTALL])
+  ])
+])# _LT_SET_OPTIONS
+
+
+## --------------------------------- ##
+## Macros to handle LT_INIT options. ##
+## --------------------------------- ##
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+  AC_CHECK_TOOL(AS, as, false)
+  AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+  AC_CHECK_TOOL(OBJDUMP, objdump, false)
+  ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS],      [1], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+    [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+	[build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+    _LT_DECL([build_libtool_libs], [enable_shared], [0],
+	[Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+    [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+	[build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+    _LT_DECL([build_old_libs], [enable_static], [0],
+	[Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+    [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+    [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+	 [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'.  If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+    [AS_HELP_STRING([--with-pic],
+	[try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+    [pic_mode="$withval"],
+    [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+## ----------------- ##
+## LTDL_INIT Options ##
+## ----------------- ##
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+		 [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+		 [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+		 [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+		 [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+		 [m4_define([_LTDL_TYPE], [convenience])])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ltsugar.m4 b/fluent-bit/lib/libbacktrace-8602fda/ltsugar.m4
new file mode 100644
index 000000000..9000a057d
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ltsugar.m4
@@ -0,0 +1,123 @@
+# ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+       [$#], [2], [[$2]],
+       [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+       [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+       [$#], 1, [],
+       [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+       [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+	     [m4_foreach([_Lt_suffix],
+		]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+	[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+		 [lt_append([$1], [$2], [$3])$4],
+		 [$5])],
+	  [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+    m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+	[$5],
+    [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+  [lt_join(m4_quote(m4_default([$4], [[, ]])),
+           lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ltversion.m4 b/fluent-bit/lib/libbacktrace-8602fda/ltversion.m4
new file mode 100644
index 000000000..bf87f7713
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ltversion.m4
@@ -0,0 +1,23 @@
+# ltversion.m4 -- version numbers			-*- Autoconf -*-
+#
+#   Copyright (C) 2004 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# Generated from ltversion.in.
+
+# serial 3134 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.2.7a])
+m4_define([LT_PACKAGE_REVISION], [1.3134])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.2.7a'
+macro_revision='1.3134'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/lt~obsolete.m4 b/fluent-bit/lib/libbacktrace-8602fda/lt~obsolete.m4
new file mode 100644
index 000000000..bf92b5e07
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/lt~obsolete.m4
@@ -0,0 +1,98 @@
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions.    -*-Autoconf-*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 4 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick.  It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else.  This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION],	[AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP],		[AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT],		[AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX],	[AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN],		[AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR],		[AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL],	[AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN],		[AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER],	[AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK],		[AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE],	[AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF],	[AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O],	[AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR],		[AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR],		[AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP],	[AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC],		[AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU],		[AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG],	[AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD],	[AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS],	[AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP],	[AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP],		[AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED],		[AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME],		[AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE],	[AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE],	[AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL],		[AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP],		[AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN],		[AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER],	[AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG],		[AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL],	[AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX],		[AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77],		[AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ],		[AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
+m4_ifndef([_LT_AC_LANG_C_CONFIG],	[AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
+m4_ifndef([_LT_AC_LANG_CXX_CONFIG],	[AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
+m4_ifndef([_LT_AC_LANG_F77_CONFIG],	[AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
+m4_ifndef([_LT_AC_LANG_GCJ_CONFIG],	[AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
+m4_ifndef([_LT_AC_LANG_RC_CONFIG],	[AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
+m4_ifndef([AC_LIBTOOL_CONFIG],		[AC_DEFUN([AC_LIBTOOL_CONFIG])])
+m4_ifndef([_LT_AC_FILE_LTDLL_C],	[AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
+m4_ifndef([_LT_REQUIRED_DARWIN_CHECKS],	[AC_DEFUN([_LT_REQUIRED_DARWIN_CHECKS])])
+m4_ifndef([_LT_AC_PROG_CXXCPP],		[AC_DEFUN([_LT_AC_PROG_CXXCPP])])
+m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS],	[AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
+m4_ifndef([_LT_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_PROG_F77],		[AC_DEFUN([_LT_PROG_F77])])
+m4_ifndef([_LT_PROG_FC],		[AC_DEFUN([_LT_PROG_FC])])
+m4_ifndef([_LT_PROG_CXX],		[AC_DEFUN([_LT_PROG_CXX])])
diff --git a/fluent-bit/lib/libbacktrace-8602fda/macho.c b/fluent-bit/lib/libbacktrace-8602fda/macho.c
new file mode 100644
index 000000000..d00aea9bc
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/macho.c
@@ -0,0 +1,1355 @@
+/* elf.c -- Get debug data from a Mach-O file for backtraces.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef HAVE_MACH_O_DYLD_H
+#include <mach-o/dyld.h>
+#endif
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Mach-O file header for a 32-bit executable.  */
+
+struct macho_header_32
+{
+  uint32_t magic;	/* Magic number (MACH_O_MAGIC_32) */
+  uint32_t cputype;	/* CPU type */
+  uint32_t cpusubtype;	/* CPU subtype */
+  uint32_t filetype;	/* Type of file (object, executable) */
+  uint32_t ncmds;	/* Number of load commands */
+  uint32_t sizeofcmds;	/* Total size of load commands */
+  uint32_t flags;	/* Flags for special features */
+};
+
+/* Mach-O file header for a 64-bit executable.  */
+
+struct macho_header_64
+{
+  uint32_t magic;	/* Magic number (MACH_O_MAGIC_64) */
+  uint32_t cputype;	/* CPU type */
+  uint32_t cpusubtype;	/* CPU subtype */
+  uint32_t filetype;	/* Type of file (object, executable) */
+  uint32_t ncmds;	/* Number of load commands */
+  uint32_t sizeofcmds;	/* Total size of load commands */
+  uint32_t flags;	/* Flags for special features */
+  uint32_t reserved;	/* Reserved */
+};
+
+/* Mach-O file header for a fat executable.  */
+
+struct macho_header_fat
+{
+  uint32_t magic;	/* Magic number (MACH_O_MH_(MAGIC|CIGAM)_FAT(_64)?) */
+  uint32_t nfat_arch;   /* Number of components */
+};
+
+/* Values for the header magic field.  */
+
+#define MACH_O_MH_MAGIC_32	0xfeedface
+#define MACH_O_MH_MAGIC_64	0xfeedfacf
+#define MACH_O_MH_MAGIC_FAT	0xcafebabe
+#define MACH_O_MH_CIGAM_FAT	0xbebafeca
+#define MACH_O_MH_MAGIC_FAT_64	0xcafebabf
+#define MACH_O_MH_CIGAM_FAT_64	0xbfbafeca
+
+/* Value for the header filetype field.  */
+
+#define MACH_O_MH_EXECUTE	0x02
+#define MACH_O_MH_DYLIB		0x06
+#define MACH_O_MH_DSYM		0x0a
+
+/* A component of a fat file.  A fat file starts with a
+   macho_header_fat followed by nfat_arch instances of this
+   struct.  */
+
+struct macho_fat_arch
+{
+  uint32_t cputype;	/* CPU type */
+  uint32_t cpusubtype;	/* CPU subtype */
+  uint32_t offset;	/* File offset of this entry */
+  uint32_t size;	/* Size of this entry */
+  uint32_t align;	/* Alignment of this entry */
+};
+
+/* A component of a 64-bit fat file.  This is used if the magic field
+   is MAGIC_FAT_64.  This is only used when some file size or file
+   offset is too large to represent in the 32-bit format.  */
+
+struct macho_fat_arch_64
+{
+  uint32_t cputype;	/* CPU type */
+  uint32_t cpusubtype;	/* CPU subtype */
+  uint64_t offset;	/* File offset of this entry */
+  uint64_t size;	/* Size of this entry */
+  uint32_t align;	/* Alignment of this entry */
+  uint32_t reserved;	/* Reserved */
+};
+
+/* Values for the fat_arch cputype field (and the header cputype
+   field).  */
+
+#define MACH_O_CPU_ARCH_ABI64 0x01000000
+
+#define MACH_O_CPU_TYPE_X86 7
+#define MACH_O_CPU_TYPE_ARM 12
+#define MACH_O_CPU_TYPE_PPC 18
+
+#define MACH_O_CPU_TYPE_X86_64 (MACH_O_CPU_TYPE_X86 | MACH_O_CPU_ARCH_ABI64)
+#define MACH_O_CPU_TYPE_ARM64  (MACH_O_CPU_TYPE_ARM | MACH_O_CPU_ARCH_ABI64)
+#define MACH_O_CPU_TYPE_PPC64  (MACH_O_CPU_TYPE_PPC | MACH_O_CPU_ARCH_ABI64)
+
+/* The header of a load command.  */
+
+struct macho_load_command
+{
+  uint32_t cmd;		/* The type of load command */
+  uint32_t cmdsize;	/* Size in bytes of the entire command */
+};
+
+/* Values for the load_command cmd field.  */
+
+#define MACH_O_LC_SEGMENT	0x01
+#define MACH_O_LC_SYMTAB	0x02
+#define MACH_O_LC_SEGMENT_64	0x19
+#define MACH_O_LC_UUID		0x1b
+
+/* The length of a section of segment name.  */
+
+#define MACH_O_NAMELEN (16)
+
+/* LC_SEGMENT load command.  */
+
+struct macho_segment_command
+{
+  uint32_t cmd;			/* The type of load command (LC_SEGMENT) */
+  uint32_t cmdsize;		/* Size in bytes of the entire command */
+  char segname[MACH_O_NAMELEN];	/* Segment name */
+  uint32_t vmaddr;		/* Virtual memory address */
+  uint32_t vmsize;		/* Virtual memory size */
+  uint32_t fileoff;		/* Offset of data to be mapped */
+  uint32_t filesize;		/* Size of data in file */
+  uint32_t maxprot;		/* Maximum permitted virtual protection */
+  uint32_t initprot;		/* Initial virtual memory protection */
+  uint32_t nsects;		/* Number of sections in this segment */
+  uint32_t flags;		/* Flags */
+};
+
+/* LC_SEGMENT_64 load command.  */
+
+struct macho_segment_64_command
+{
+  uint32_t cmd;			/* The type of load command (LC_SEGMENT) */
+  uint32_t cmdsize;		/* Size in bytes of the entire command */
+  char segname[MACH_O_NAMELEN];	/* Segment name */
+  uint64_t vmaddr;		/* Virtual memory address */
+  uint64_t vmsize;		/* Virtual memory size */
+  uint64_t fileoff;		/* Offset of data to be mapped */
+  uint64_t filesize;		/* Size of data in file */
+  uint32_t maxprot;		/* Maximum permitted virtual protection */
+  uint32_t initprot;		/* Initial virtual memory protection */
+  uint32_t nsects;		/* Number of sections in this segment */
+  uint32_t flags;		/* Flags */
+};
+
+/* LC_SYMTAB load command.  */
+
+struct macho_symtab_command
+{
+  uint32_t cmd;		/* The type of load command (LC_SEGMENT) */
+  uint32_t cmdsize;	/* Size in bytes of the entire command */
+  uint32_t symoff;	/* File offset of symbol table */
+  uint32_t nsyms;	/* Number of symbols */
+  uint32_t stroff;	/* File offset of string table */
+  uint32_t strsize;	/* String table size */
+};
+
+/* The length of a Mach-O uuid.  */
+
+#define MACH_O_UUID_LEN (16)
+
+/* LC_UUID load command.  */
+
+struct macho_uuid_command
+{
+  uint32_t cmd;				/* Type of load command (LC_UUID) */
+  uint32_t cmdsize;			/* Size in bytes of command */
+  unsigned char uuid[MACH_O_UUID_LEN];	/* UUID */
+};
+
+/* 32-bit section header within a LC_SEGMENT segment.  */
+
+struct macho_section
+{
+  char sectname[MACH_O_NAMELEN];	/* Section name */
+  char segment[MACH_O_NAMELEN];		/* Segment of this section */
+  uint32_t addr;			/* Address in memory */
+  uint32_t size;			/* Section size */
+  uint32_t offset;			/* File offset */
+  uint32_t align;			/* Log2 of section alignment */
+  uint32_t reloff;			/* File offset of relocations */
+  uint32_t nreloc;			/* Number of relocs for this section */
+  uint32_t flags;			/* Flags */
+  uint32_t reserved1;
+  uint32_t reserved2;
+};
+
+/* 64-bit section header within a LC_SEGMENT_64 segment.   */
+
+struct macho_section_64
+{
+  char sectname[MACH_O_NAMELEN];	/* Section name */
+  char segment[MACH_O_NAMELEN];		/* Segment of this section */
+  uint64_t addr;			/* Address in memory */
+  uint64_t size;			/* Section size */
+  uint32_t offset;			/* File offset */
+  uint32_t align;			/* Log2 of section alignment */
+  uint32_t reloff;			/* File offset of section relocations */
+  uint32_t nreloc;			/* Number of relocs for this section */
+  uint32_t flags;			/* Flags */
+  uint32_t reserved1;
+  uint32_t reserved2;
+  uint32_t reserved3;
+};
+
+/* 32-bit symbol data.  */
+
+struct macho_nlist
+{
+  uint32_t n_strx;	/* Index of name in string table */
+  uint8_t n_type;	/* Type flag */
+  uint8_t n_sect;	/* Section number */
+  uint16_t n_desc;	/* Stabs description field */
+  uint32_t n_value;	/* Value */
+};
+
+/* 64-bit symbol data.  */
+
+struct macho_nlist_64
+{
+  uint32_t n_strx;	/* Index of name in string table */
+  uint8_t n_type;	/* Type flag */
+  uint8_t n_sect;	/* Section number */
+  uint16_t n_desc;	/* Stabs description field */
+  uint64_t n_value;	/* Value */
+};
+
+/* Value found in nlist n_type field.  */
+
+#define MACH_O_N_EXT	0x01	/* Extern symbol */
+#define MACH_O_N_ABS	0x02	/* Absolute symbol */
+#define MACH_O_N_SECT	0x0e	/* Defined in section */
+
+#define MACH_O_N_TYPE	0x0e	/* Mask for type bits */
+#define MACH_O_N_STAB	0xe0	/* Stabs debugging symbol */
+
+/* Information we keep for a Mach-O symbol.  */
+
+struct macho_symbol
+{
+  const char *name;	/* Symbol name */
+  uintptr_t address;	/* Symbol address */
+};
+
+/* Information to pass to macho_syminfo.  */
+
+struct macho_syminfo_data
+{
+  struct macho_syminfo_data *next;	/* Next module */
+  struct macho_symbol *symbols;		/* Symbols sorted by address */
+  size_t count;				/* Number of symbols */
+};
+
+/* Names of sections, indexed by enum dwarf_section in internal.h.  */
+
+static const char * const dwarf_section_names[DEBUG_MAX] =
+{
+  "__debug_info",
+  "__debug_line",
+  "__debug_abbrev",
+  "__debug_ranges",
+  "__debug_str",
+  "", /* DEBUG_ADDR */
+  "__debug_str_offs",
+  "", /* DEBUG_LINE_STR */
+  "__debug_rnglists"
+};
+
+/* Forward declaration.  */
+
+static int macho_add (struct backtrace_state *, const char *, int, off_t,
+		      const unsigned char *, uintptr_t, int,
+		      backtrace_error_callback, void *, fileline *, int *);
+
+/* A dummy callback function used when we can't find any debug info.  */
+
+static int
+macho_nodebug (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	       uintptr_t pc ATTRIBUTE_UNUSED,
+	       backtrace_full_callback callback ATTRIBUTE_UNUSED,
+	       backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no debug info in Mach-O executable", -1);
+  return 0;
+}
+
+/* A dummy callback function used when we can't find a symbol
+   table.  */
+
+static void
+macho_nosyms (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	      uintptr_t addr ATTRIBUTE_UNUSED,
+	      backtrace_syminfo_callback callback ATTRIBUTE_UNUSED,
+	      backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no symbol table in Mach-O executable", -1);
+}
+
+/* Add a single DWARF section to DWARF_SECTIONS, if we need the
+   section.  Returns 1 on success, 0 on failure.  */
+
+static int
+macho_add_dwarf_section (struct backtrace_state *state, int descriptor,
+			 const char *sectname, uint32_t offset, uint64_t size,
+			 backtrace_error_callback error_callback, void *data,
+			 struct dwarf_sections *dwarf_sections)
+{
+  int i;
+
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      if (dwarf_section_names[i][0] != '\0'
+	  && strncmp (sectname, dwarf_section_names[i], MACH_O_NAMELEN) == 0)
+	{
+	  struct backtrace_view section_view;
+
+	  /* FIXME: Perhaps it would be better to try to use a single
+	     view to read all the DWARF data, as we try to do for
+	     ELF.  */
+
+	  if (!backtrace_get_view (state, descriptor, offset, size,
+				   error_callback, data, &section_view))
+	    return 0;
+	  dwarf_sections->data[i] = (const unsigned char *) section_view.data;
+	  dwarf_sections->size[i] = size;
+	  break;
+	}
+    }
+  return 1;
+}
+
+/* Collect DWARF sections from a DWARF segment.  Returns 1 on success,
+   0 on failure.  */
+
+static int
+macho_add_dwarf_segment (struct backtrace_state *state, int descriptor,
+			 off_t offset, unsigned int cmd, const char *psecs,
+			 size_t sizesecs, unsigned int nsects,
+			 backtrace_error_callback error_callback, void *data,
+			 struct dwarf_sections *dwarf_sections)
+{
+  size_t sec_header_size;
+  size_t secoffset;
+  unsigned int i;
+
+  switch (cmd)
+    {
+    case MACH_O_LC_SEGMENT:
+      sec_header_size = sizeof (struct macho_section);
+      break;
+    case MACH_O_LC_SEGMENT_64:
+      sec_header_size = sizeof (struct macho_section_64);
+      break;
+    default:
+      abort ();
+    }
+
+  secoffset = 0;
+  for (i = 0; i < nsects; ++i)
+    {
+      if (secoffset + sec_header_size > sizesecs)
+	{
+	  error_callback (data, "section overflow withing segment", 0);
+	  return 0;
+	}
+
+      switch (cmd)
+	{
+	case MACH_O_LC_SEGMENT:
+	  {
+	    struct macho_section section;
+
+	    memcpy (&section, psecs + secoffset, sizeof section);
+	    macho_add_dwarf_section (state, descriptor, section.sectname,
+				     offset + section.offset, section.size,
+				     error_callback, data, dwarf_sections);
+	  }
+	  break;
+
+	case MACH_O_LC_SEGMENT_64:
+	  {
+	    struct macho_section_64 section;
+
+	    memcpy (&section, psecs + secoffset, sizeof section);
+	    macho_add_dwarf_section (state, descriptor, section.sectname,
+				     offset + section.offset, section.size,
+				     error_callback, data, dwarf_sections);
+	  }
+	  break;
+
+	default:
+	  abort ();
+	}
+
+      secoffset += sec_header_size;
+    }
+
+  return 1;
+}
+
+/* Compare struct macho_symbol for qsort.  */
+
+static int
+macho_symbol_compare (const void *v1, const void *v2)
+{
+  const struct macho_symbol *m1 = (const struct macho_symbol *) v1;
+  const struct macho_symbol *m2 = (const struct macho_symbol *) v2;
+
+  if (m1->address < m2->address)
+    return -1;
+  else if (m1->address > m2->address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare an address against a macho_symbol for bsearch.  We allocate
+   one extra entry in the array so that this can safely look at the
+   next entry.  */
+
+static int
+macho_symbol_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct macho_symbol *entry = (const struct macho_symbol *) ventry;
+  uintptr_t addr;
+
+  addr = *key;
+  if (addr < entry->address)
+    return -1;
+  else if (entry->name[0] == '\0'
+	   && entry->address == ~(uintptr_t) 0)
+    return -1;
+  else if ((entry + 1)->name[0] == '\0'
+	   && (entry + 1)->address == ~(uintptr_t) 0)
+    return -1;
+  else if (addr >= (entry + 1)->address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Return whether the symbol type field indicates a symbol table entry
+   that we care about: a function or data symbol.  */
+
+static int
+macho_defined_symbol (uint8_t type)
+{
+  if ((type & MACH_O_N_STAB) != 0)
+    return 0;
+  if ((type & MACH_O_N_EXT) != 0)
+    return 0;
+  switch (type & MACH_O_N_TYPE)
+    {
+    case MACH_O_N_ABS:
+      return 1;
+    case MACH_O_N_SECT:
+      return 1;
+    default:
+      return 0;
+    }
+}
+
+/* Add symbol table information for a Mach-O file.  */
+
+static int
+macho_add_symtab (struct backtrace_state *state, int descriptor,
+		  uintptr_t base_address, int is_64,
+		  off_t symoff, unsigned int nsyms, off_t stroff,
+		  unsigned int strsize,
+		  backtrace_error_callback error_callback, void *data)
+{
+  size_t symsize;
+  struct backtrace_view sym_view;
+  int sym_view_valid;
+  struct backtrace_view str_view;
+  int str_view_valid;
+  size_t ndefs;
+  size_t symtaboff;
+  unsigned int i;
+  size_t macho_symbol_size;
+  struct macho_symbol *macho_symbols;
+  unsigned int j;
+  struct macho_syminfo_data *sdata;
+
+  sym_view_valid = 0;
+  str_view_valid = 0;
+  macho_symbol_size = 0;
+  macho_symbols = NULL;
+
+  if (is_64)
+    symsize = sizeof (struct macho_nlist_64);
+  else
+    symsize = sizeof (struct macho_nlist);
+
+  if (!backtrace_get_view (state, descriptor, symoff, nsyms * symsize,
+			   error_callback, data, &sym_view))
+    goto fail;
+  sym_view_valid = 1;
+
+  if (!backtrace_get_view (state, descriptor, stroff, strsize,
+			   error_callback, data, &str_view))
+    return 0;
+  str_view_valid = 1;
+
+  ndefs = 0;
+  symtaboff = 0;
+  for (i = 0; i < nsyms; ++i, symtaboff += symsize)
+    {
+      if (is_64)
+	{
+	  struct macho_nlist_64 nlist;
+
+	  memcpy (&nlist, (const char *) sym_view.data + symtaboff,
+		  sizeof nlist);
+	  if (macho_defined_symbol (nlist.n_type))
+	    ++ndefs;
+	}
+      else
+	{
+	  struct macho_nlist nlist;
+
+	  memcpy (&nlist, (const char *) sym_view.data + symtaboff,
+		  sizeof nlist);
+	  if (macho_defined_symbol (nlist.n_type))
+	    ++ndefs;
+	}
+    }
+
+  /* Add 1 to ndefs to make room for a sentinel.  */
+  macho_symbol_size = (ndefs + 1) * sizeof (struct macho_symbol);
+  macho_symbols = ((struct macho_symbol *)
+		   backtrace_alloc (state, macho_symbol_size, error_callback,
+				    data));
+  if (macho_symbols == NULL)
+    goto fail;
+
+  j = 0;
+  symtaboff = 0;
+  for (i = 0; i < nsyms; ++i, symtaboff += symsize)
+    {
+      uint32_t strx;
+      uint64_t value;
+      const char *name;
+
+      strx = 0;
+      value = 0;
+      if (is_64)
+	{
+	  struct macho_nlist_64 nlist;
+
+	  memcpy (&nlist, (const char *) sym_view.data + symtaboff,
+		  sizeof nlist);
+	  if (!macho_defined_symbol (nlist.n_type))
+	    continue;
+
+	  strx = nlist.n_strx;
+	  value = nlist.n_value;
+	}
+      else
+	{
+	  struct macho_nlist nlist;
+
+	  memcpy (&nlist, (const char *) sym_view.data + symtaboff,
+		  sizeof nlist);
+	  if (!macho_defined_symbol (nlist.n_type))
+	    continue;
+
+	  strx = nlist.n_strx;
+	  value = nlist.n_value;
+	}
+
+      if (strx >= strsize)
+	{
+	  error_callback (data, "symbol string index out of range", 0);
+	  goto fail;
+	}
+
+      name = (const char *) str_view.data + strx;
+      if (name[0] == '_')
+	++name;
+      macho_symbols[j].name = name;
+      macho_symbols[j].address = value + base_address;
+      ++j;
+    }
+
+  sdata = ((struct macho_syminfo_data *)
+	   backtrace_alloc (state, sizeof *sdata, error_callback, data));
+  if (sdata == NULL)
+    goto fail;
+
+  /* We need to keep the string table since it holds the names, but we
+     can release the symbol table.  */
+
+  backtrace_release_view (state, &sym_view, error_callback, data);
+  sym_view_valid = 0;
+  str_view_valid = 0;
+
+  /* Add a trailing sentinel symbol.  */
+  macho_symbols[j].name = "";
+  macho_symbols[j].address = ~(uintptr_t) 0;
+
+  backtrace_qsort (macho_symbols, ndefs + 1, sizeof (struct macho_symbol),
+		   macho_symbol_compare);
+
+  sdata->next = NULL;
+  sdata->symbols = macho_symbols;
+  sdata->count = ndefs;
+
+  if (!state->threaded)
+    {
+      struct macho_syminfo_data **pp;
+
+      for (pp = (struct macho_syminfo_data **) (void *) &state->syminfo_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = sdata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct macho_syminfo_data **pp;
+
+	  pp = (struct macho_syminfo_data **) (void *) &state->syminfo_data;
+
+	  while (1)
+	    {
+	      struct macho_syminfo_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+	      
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, sdata))
+	    break;
+	}
+    }
+
+  return 1;
+
+ fail:
+  if (macho_symbols != NULL)
+    backtrace_free (state, macho_symbols, macho_symbol_size,
+		    error_callback, data);
+  if (sym_view_valid)
+    backtrace_release_view (state, &sym_view, error_callback, data);
+  if (str_view_valid)
+    backtrace_release_view (state, &str_view, error_callback, data);
+  return 0;
+}
+
+/* Return the symbol name and value for an ADDR.  */
+
+static void
+macho_syminfo (struct backtrace_state *state, uintptr_t addr,
+	       backtrace_syminfo_callback callback,
+	       backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+	       void *data)
+{
+  struct macho_syminfo_data *sdata;
+  struct macho_symbol *sym;
+
+  sym = NULL;
+  if (!state->threaded)
+    {
+      for (sdata = (struct macho_syminfo_data *) state->syminfo_data;
+	   sdata != NULL;
+	   sdata = sdata->next)
+	{
+	  sym = ((struct macho_symbol *)
+		 bsearch (&addr, sdata->symbols, sdata->count,
+			  sizeof (struct macho_symbol), macho_symbol_search));
+	  if (sym != NULL)
+	    break;
+	}
+    }
+  else
+    {
+      struct macho_syminfo_data **pp;
+
+      pp = (struct macho_syminfo_data **) (void *) &state->syminfo_data;
+      while (1)
+	{
+	  sdata = backtrace_atomic_load_pointer (pp);
+	  if (sdata == NULL)
+	    break;
+
+	  sym = ((struct macho_symbol *)
+		 bsearch (&addr, sdata->symbols, sdata->count,
+			  sizeof (struct macho_symbol), macho_symbol_search));
+	  if (sym != NULL)
+	    break;
+
+	  pp = &sdata->next;
+	}
+    }
+
+  if (sym == NULL)
+    callback (data, addr, NULL, 0, 0);
+  else
+    callback (data, addr, sym->name, sym->address, 0);
+}
+
+/* Look through a fat file to find the relevant executable.  Returns 1
+   on success, 0 on failure (in both cases descriptor is closed).  */
+
+static int
+macho_add_fat (struct backtrace_state *state, const char *filename,
+	       int descriptor, int swapped, off_t offset,
+	       const unsigned char *match_uuid, uintptr_t base_address,
+	       int skip_symtab, uint32_t nfat_arch, int is_64,
+	       backtrace_error_callback error_callback, void *data,
+	       fileline *fileline_fn, int *found_sym)
+{
+  int arch_view_valid;
+  unsigned int cputype;
+  size_t arch_size;
+  struct backtrace_view arch_view;
+  unsigned int i;
+
+  arch_view_valid = 0;
+
+#if defined (__x86_64__)
+  cputype = MACH_O_CPU_TYPE_X86_64;
+#elif defined (__i386__)
+  cputype = MACH_O_CPU_TYPE_X86;
+#elif defined (__aarch64__)
+  cputype = MACH_O_CPU_TYPE_ARM64;
+#elif defined (__arm__)
+  cputype = MACH_O_CPU_TYPE_ARM;
+#elif defined (__ppc__)
+  cputype = MACH_O_CPU_TYPE_PPC;
+#elif defined (__ppc64__)
+  cputype = MACH_O_CPU_TYPE_PPC64;
+#else
+  error_callback (data, "unknown Mach-O architecture", 0);
+  goto fail;
+#endif
+
+  if (is_64)
+    arch_size = sizeof (struct macho_fat_arch_64);
+  else
+    arch_size = sizeof (struct macho_fat_arch);
+
+  if (!backtrace_get_view (state, descriptor, offset,
+			   nfat_arch * arch_size,
+			   error_callback, data, &arch_view))
+    goto fail;
+
+  for (i = 0; i < nfat_arch; ++i)
+    {
+      uint32_t fcputype;
+      uint64_t foffset;
+
+      if (is_64)
+	{
+	  struct macho_fat_arch_64 fat_arch_64;
+
+	  memcpy (&fat_arch_64,
+		  (const char *) arch_view.data + i * arch_size,
+		  arch_size);
+	  fcputype = fat_arch_64.cputype;
+	  foffset = fat_arch_64.offset;
+	  if (swapped)
+	    {
+	      fcputype = __builtin_bswap32 (fcputype);
+	      foffset = __builtin_bswap64 (foffset);
+	    }
+	}
+      else
+	{
+	  struct macho_fat_arch fat_arch_32;
+
+	  memcpy (&fat_arch_32,
+		  (const char *) arch_view.data + i * arch_size,
+		  arch_size);
+	  fcputype = fat_arch_32.cputype;
+	  foffset = (uint64_t) fat_arch_32.offset;
+	  if (swapped)
+	    {
+	      fcputype = __builtin_bswap32 (fcputype);
+	      foffset = (uint64_t) __builtin_bswap32 ((uint32_t) foffset);
+	    }
+	}
+
+      if (fcputype == cputype)
+	{
+	  /* FIXME: What about cpusubtype?  */
+	  backtrace_release_view (state, &arch_view, error_callback, data);
+	  return macho_add (state, filename, descriptor, foffset, match_uuid,
+			    base_address, skip_symtab, error_callback, data,
+			    fileline_fn, found_sym);
+	}
+    }
+
+  error_callback (data, "could not find executable in fat file", 0);
+
+ fail:
+  if (arch_view_valid)
+    backtrace_release_view (state, &arch_view, error_callback, data);
+  if (descriptor != -1)
+    backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+/* Look for the dsym file for FILENAME.  This is called if FILENAME
+   does not have debug info or a symbol table.  Returns 1 on success,
+   0 on failure.  */
+
+static int
+macho_add_dsym (struct backtrace_state *state, const char *filename,
+		uintptr_t base_address, const unsigned char *uuid,
+		backtrace_error_callback error_callback, void *data,
+		fileline* fileline_fn)
+{
+  const char *p;
+  const char *dirname;
+  char *diralc;
+  size_t dirnamelen;
+  const char *basename;
+  size_t basenamelen;
+  const char *dsymsuffixdir;
+  size_t dsymsuffixdirlen;
+  size_t dsymlen;
+  char *dsym;
+  char *ps;
+  int d;
+  int does_not_exist;
+  int dummy_found_sym;
+
+  diralc = NULL;
+  dirnamelen = 0;
+  dsym = NULL;
+  dsymlen = 0;
+
+  p = strrchr (filename, '/');
+  if (p == NULL)
+    {
+      dirname = ".";
+      dirnamelen = 1;
+      basename = filename;
+      basenamelen = strlen (basename);
+      diralc = NULL;
+    }
+  else
+    {
+      dirnamelen = p - filename;
+      diralc = backtrace_alloc (state, dirnamelen + 1, error_callback, data);
+      if (diralc == NULL)
+	goto fail;
+      memcpy (diralc, filename, dirnamelen);
+      diralc[dirnamelen] = '\0';
+      dirname = diralc;
+      basename = p + 1;
+      basenamelen = strlen (basename);
+    }
+
+  dsymsuffixdir = ".dSYM/Contents/Resources/DWARF/";
+  dsymsuffixdirlen = strlen (dsymsuffixdir);
+
+  dsymlen = (dirnamelen
+	     + 1
+	     + basenamelen
+	     + dsymsuffixdirlen
+	     + basenamelen
+	     + 1);
+  dsym = backtrace_alloc (state, dsymlen, error_callback, data);
+  if (dsym == NULL)
+    goto fail;
+
+  ps = dsym;
+  memcpy (ps, dirname, dirnamelen);
+  ps += dirnamelen;
+  *ps++ = '/';
+  memcpy (ps, basename, basenamelen);
+  ps += basenamelen;
+  memcpy (ps, dsymsuffixdir, dsymsuffixdirlen);
+  ps += dsymsuffixdirlen;
+  memcpy (ps, basename, basenamelen);
+  ps += basenamelen;
+  *ps = '\0';
+
+  if (diralc != NULL)
+    {
+      backtrace_free (state, diralc, dirnamelen + 1, error_callback, data);
+      diralc = NULL;
+    }
+
+  d = backtrace_open (dsym, error_callback, data, &does_not_exist);
+  if (d < 0)
+    {
+      /* The file does not exist, so we can't read the debug info.
+	 Just return success.  */
+      backtrace_free (state, dsym, dsymlen, error_callback, data);
+      return 1;
+    }
+
+  if (!macho_add (state, dsym, d, 0, uuid, base_address, 1,
+		  error_callback, data, fileline_fn, &dummy_found_sym))
+    goto fail;
+
+  backtrace_free (state, dsym, dsymlen, error_callback, data);
+
+  return 1;
+
+ fail:
+  if (dsym != NULL)
+    backtrace_free (state, dsym, dsymlen, error_callback, data);
+  if (diralc != NULL)
+    backtrace_free (state, diralc, dirnamelen, error_callback, data);
+  return 0;
+}
+
+/* Add the backtrace data for a Macho-O file.  Returns 1 on success, 0
+   on failure (in both cases descriptor is closed).
+
+   FILENAME: the name of the executable.
+   DESCRIPTOR: an open descriptor for the executable, closed here.
+   OFFSET: the offset within the file of this executable, for fat files.
+   MATCH_UUID: if not NULL, UUID that must match.
+   BASE_ADDRESS: the load address of the executable.
+   SKIP_SYMTAB: if non-zero, ignore the symbol table; used for dSYM files.
+   FILELINE_FN: set to the fileline function, by backtrace_dwarf_add.
+   FOUND_SYM: set to non-zero if we found the symbol table.
+*/
+
+static int
+macho_add (struct backtrace_state *state, const char *filename, int descriptor,
+	   off_t offset, const unsigned char *match_uuid,
+	   uintptr_t base_address, int skip_symtab,
+	   backtrace_error_callback error_callback, void *data,
+	   fileline *fileline_fn, int *found_sym)
+{
+  struct backtrace_view header_view;
+  struct macho_header_32 header;
+  off_t hdroffset;
+  int is_64;
+  struct backtrace_view cmds_view;
+  int cmds_view_valid;
+  struct dwarf_sections dwarf_sections;
+  int have_dwarf;
+  unsigned char uuid[MACH_O_UUID_LEN];
+  int have_uuid;
+  size_t cmdoffset;
+  unsigned int i;
+
+  *found_sym = 0;
+
+  cmds_view_valid = 0;
+
+  /* The 32-bit and 64-bit file headers start out the same, so we can
+     just always read the 32-bit version.  A fat header is shorter but
+     it will always be followed by data, so it's OK to read extra.  */
+
+  if (!backtrace_get_view (state, descriptor, offset,
+			   sizeof (struct macho_header_32),
+			   error_callback, data, &header_view))
+    goto fail;
+
+  memcpy (&header, header_view.data, sizeof header);
+
+  backtrace_release_view (state, &header_view, error_callback, data);
+
+  switch (header.magic)
+    {
+    case MACH_O_MH_MAGIC_32:
+      is_64 = 0;
+      hdroffset = offset + sizeof (struct macho_header_32);
+      break;
+    case MACH_O_MH_MAGIC_64:
+      is_64 = 1;
+      hdroffset = offset + sizeof (struct macho_header_64);
+      break;
+    case MACH_O_MH_MAGIC_FAT:
+    case MACH_O_MH_MAGIC_FAT_64:
+      {
+	struct macho_header_fat fat_header;
+
+	hdroffset = offset + sizeof (struct macho_header_fat);
+	memcpy (&fat_header, &header, sizeof fat_header);
+	return macho_add_fat (state, filename, descriptor, 0, hdroffset,
+			      match_uuid, base_address, skip_symtab,
+			      fat_header.nfat_arch,
+			      header.magic == MACH_O_MH_MAGIC_FAT_64,
+			      error_callback, data, fileline_fn, found_sym);
+      }
+    case MACH_O_MH_CIGAM_FAT:
+    case MACH_O_MH_CIGAM_FAT_64:
+      {
+	struct macho_header_fat fat_header;
+	uint32_t nfat_arch;
+
+	hdroffset = offset + sizeof (struct macho_header_fat);
+	memcpy (&fat_header, &header, sizeof fat_header);
+	nfat_arch = __builtin_bswap32 (fat_header.nfat_arch);
+	return macho_add_fat (state, filename, descriptor, 1, hdroffset,
+			      match_uuid, base_address, skip_symtab,
+			      nfat_arch,
+			      header.magic == MACH_O_MH_CIGAM_FAT_64,
+			      error_callback, data, fileline_fn, found_sym);
+      }
+    default:
+      error_callback (data, "executable file is not in Mach-O format", 0);
+      goto fail;
+    }
+
+  switch (header.filetype)
+    {
+    case MACH_O_MH_EXECUTE:
+    case MACH_O_MH_DYLIB:
+    case MACH_O_MH_DSYM:
+      break;
+    default:
+      error_callback (data, "executable file is not an executable", 0);
+      goto fail;
+    }
+
+  if (!backtrace_get_view (state, descriptor, hdroffset, header.sizeofcmds,
+			   error_callback, data, &cmds_view))
+    goto fail;
+  cmds_view_valid = 1;
+
+  memset (&dwarf_sections, 0, sizeof dwarf_sections);
+  have_dwarf = 0;
+  memset (&uuid, 0, sizeof uuid);
+  have_uuid = 0;
+
+  cmdoffset = 0;
+  for (i = 0; i < header.ncmds; ++i)
+    {
+      const char *pcmd;
+      struct macho_load_command load_command;
+
+      if (cmdoffset + sizeof load_command > header.sizeofcmds)
+	break;
+
+      pcmd = (const char *) cmds_view.data + cmdoffset;
+      memcpy (&load_command, pcmd, sizeof load_command);
+
+      switch (load_command.cmd)
+	{
+	case MACH_O_LC_SEGMENT:
+	  {
+	    struct macho_segment_command segcmd;
+
+	    memcpy (&segcmd, pcmd, sizeof segcmd);
+	    if (memcmp (segcmd.segname,
+			"__DWARF\0\0\0\0\0\0\0\0\0",
+			MACH_O_NAMELEN) == 0)
+	      {
+		if (!macho_add_dwarf_segment (state, descriptor, offset,
+					      load_command.cmd,
+					      pcmd + sizeof segcmd,
+					      (load_command.cmdsize
+					       - sizeof segcmd),
+					      segcmd.nsects, error_callback,
+					      data, &dwarf_sections))
+		  goto fail;
+		have_dwarf = 1;
+	      }
+	  }
+	  break;
+
+	case MACH_O_LC_SEGMENT_64:
+	  {
+	    struct macho_segment_64_command segcmd;
+
+	    memcpy (&segcmd, pcmd, sizeof segcmd);
+	    if (memcmp (segcmd.segname,
+			"__DWARF\0\0\0\0\0\0\0\0\0",
+			MACH_O_NAMELEN) == 0)
+	      {
+		if (!macho_add_dwarf_segment (state, descriptor, offset,
+					      load_command.cmd,
+					      pcmd + sizeof segcmd,
+					      (load_command.cmdsize
+					       - sizeof segcmd),
+					      segcmd.nsects, error_callback,
+					      data, &dwarf_sections))
+		  goto fail;
+		have_dwarf = 1;
+	      }
+	  }
+	  break;
+
+	case MACH_O_LC_SYMTAB:
+	  if (!skip_symtab)
+	    {
+	      struct macho_symtab_command symcmd;
+
+	      memcpy (&symcmd, pcmd, sizeof symcmd);
+	      if (!macho_add_symtab (state, descriptor, base_address, is_64,
+				     offset + symcmd.symoff, symcmd.nsyms,
+				     offset + symcmd.stroff, symcmd.strsize,
+				     error_callback, data))
+		goto fail;
+
+	      *found_sym = 1;
+	    }
+	  break;
+
+	case MACH_O_LC_UUID:
+	  {
+	    struct macho_uuid_command uuidcmd;
+
+	    memcpy (&uuidcmd, pcmd, sizeof uuidcmd);
+	    memcpy (&uuid[0], &uuidcmd.uuid[0], MACH_O_UUID_LEN);
+	    have_uuid = 1;
+	  }
+	  break;
+
+	default:
+	  break;
+	}
+
+      cmdoffset += load_command.cmdsize;
+    }
+
+  if (!backtrace_close (descriptor, error_callback, data))
+    goto fail;
+  descriptor = -1;
+
+  backtrace_release_view (state, &cmds_view, error_callback, data);
+  cmds_view_valid = 0;
+
+  if (match_uuid != NULL)
+    {
+      /* If we don't have a UUID, or it doesn't match, just ignore
+	 this file.  */
+      if (!have_uuid
+	  || memcmp (match_uuid, &uuid[0], MACH_O_UUID_LEN) != 0)
+	return 1;
+    }
+
+  if (have_dwarf)
+    {
+      int is_big_endian;
+
+      is_big_endian = 0;
+#if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__)
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+      is_big_endian = 1;
+#endif
+#endif
+
+      if (!backtrace_dwarf_add (state, base_address, &dwarf_sections,
+				is_big_endian, NULL, error_callback, data,
+				fileline_fn, NULL))
+	goto fail;
+    }
+
+  if (!have_dwarf && have_uuid)
+    {
+      if (!macho_add_dsym (state, filename, base_address, &uuid[0],
+			   error_callback, data, fileline_fn))
+	goto fail;
+    }
+
+  return 1;
+
+ fail:
+  if (cmds_view_valid)
+    backtrace_release_view (state, &cmds_view, error_callback, data);
+  if (descriptor != -1)
+    backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+#ifdef HAVE_MACH_O_DYLD_H
+
+/* Initialize the backtrace data we need from a Mach-O executable
+   using the dyld support functions.  This closes descriptor.  */
+
+int
+backtrace_initialize (struct backtrace_state *state, const char *filename,
+		      int descriptor, backtrace_error_callback error_callback,
+		      void *data, fileline *fileline_fn)
+{
+  uint32_t c;
+  uint32_t i;
+  int closed_descriptor;
+  int found_sym;
+  fileline macho_fileline_fn;
+
+  closed_descriptor = 0;
+  found_sym = 0;
+  macho_fileline_fn = macho_nodebug;
+
+  c = _dyld_image_count ();
+  for (i = 0; i < c; ++i)
+    {
+      uintptr_t base_address;
+      const char *name;
+      int d;
+      fileline mff;
+      int mfs;
+
+      name = _dyld_get_image_name (i);
+      if (name == NULL)
+	continue;
+
+      if (strcmp (name, filename) == 0 && !closed_descriptor)
+	{
+	  d = descriptor;
+	  closed_descriptor = 1;
+	}
+      else
+	{
+	  int does_not_exist;
+
+	  d = backtrace_open (name, error_callback, data, &does_not_exist);
+	  if (d < 0)
+	    continue;
+	}
+
+      base_address = _dyld_get_image_vmaddr_slide (i);
+
+      mff = macho_nodebug;
+      if (!macho_add (state, name, d, 0, NULL, base_address, 0,
+		      error_callback, data, &mff, &mfs))
+	continue;
+
+      if (mff != macho_nodebug)
+	macho_fileline_fn = mff;
+      if (mfs)
+	found_sym = 1;
+    }
+
+  if (!closed_descriptor)
+    backtrace_close (descriptor, error_callback, data);
+
+  if (!state->threaded)
+    {
+      if (found_sym)
+	state->syminfo_fn = macho_syminfo;
+      else if (state->syminfo_fn == NULL)
+	state->syminfo_fn = macho_nosyms;
+    }
+  else
+    {
+      if (found_sym)
+	backtrace_atomic_store_pointer (&state->syminfo_fn, macho_syminfo);
+      else
+	(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
+					     macho_nosyms);
+    }
+
+  if (!state->threaded)
+    *fileline_fn = state->fileline_fn;
+  else
+    *fileline_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+
+  if (*fileline_fn == NULL || *fileline_fn == macho_nodebug)
+    *fileline_fn = macho_fileline_fn;
+
+  return 1;
+}
+
+#else /* !defined (HAVE_MACH_O_DYLD_H) */
+
+/* Initialize the backtrace data we need from a Mach-O executable
+   without using the dyld support functions.  This closes
+   descriptor.  */
+
+int
+backtrace_initialize (struct backtrace_state *state, const char *filename,
+		      int descriptor, backtrace_error_callback error_callback,
+		      void *data, fileline *fileline_fn)
+{
+  fileline macho_fileline_fn;
+  int found_sym;
+
+  macho_fileline_fn = macho_nodebug;
+  if (!macho_add (state, filename, descriptor, 0, NULL, 0, 0,
+		  error_callback, data, &macho_fileline_fn, &found_sym))
+    return 0;
+
+  if (!state->threaded)
+    {
+      if (found_sym)
+	state->syminfo_fn = macho_syminfo;
+      else if (state->syminfo_fn == NULL)
+	state->syminfo_fn = macho_nosyms;
+    }
+  else
+    {
+      if (found_sym)
+	backtrace_atomic_store_pointer (&state->syminfo_fn, macho_syminfo);
+      else
+	(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
+					     macho_nosyms);
+    }
+
+  if (!state->threaded)
+    *fileline_fn = state->fileline_fn;
+  else
+    *fileline_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+
+  if (*fileline_fn == NULL || *fileline_fn == macho_nodebug)
+    *fileline_fn = macho_fileline_fn;
+
+  return 1;
+}
+
+#endif /* !defined (HAVE_MACH_O_DYLD_H) */
diff --git a/fluent-bit/lib/libbacktrace-8602fda/missing b/fluent-bit/lib/libbacktrace-8602fda/missing
new file mode 100755
index 000000000..f62bbae30
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/missing
@@ -0,0 +1,215 @@
+#! /bin/sh
+# Common wrapper for a few potentially missing GNU programs.
+
+scriptversion=2013-10-28.13; # UTC
+
+# Copyright (C) 1996-2014 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try '$0 --help' for more information"
+  exit 1
+fi
+
+case $1 in
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
+    shift
+    ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
+
+Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
+'g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=http://www.perl.org/
+flex_URL=http://flex.sourceforge.net/
+gnu_software_URL=http://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
+    s/^gnu-//; t
+    s/^gnu//; t
+    s/^g//; t'`
+
+  printf '%s\n' "'$1' is $msg."
+
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
+    autoconf*)
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
+      ;;
+    autoheader*)
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
+      ;;
+    automake*)
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
+      ;;
+   autom4te*)
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
+      ;;
+    bison*|yacc*)
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
+      ;;
+    lex*|flex*)
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
+      ;;
+    help2man*)
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
+    ;;
+    makeinfo*)
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
+      ;;
+    *)
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
+      ;;
+  esac
+}
+
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
+
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/mmap.c b/fluent-bit/lib/libbacktrace-8602fda/mmap.c
new file mode 100644
index 000000000..d7313be73
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/mmap.c
@@ -0,0 +1,331 @@
+/* mmap.c -- Memory allocation with mmap.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+#ifndef HAVE_DECL_GETPAGESIZE
+extern int getpagesize (void);
+#endif
+
+/* Memory allocation on systems that provide anonymous mmap.  This
+   permits the backtrace functions to be invoked from a signal
+   handler, assuming that mmap is async-signal safe.  */
+
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
+/* A list of free memory blocks.  */
+
+struct backtrace_freelist_struct
+{
+  /* Next on list.  */
+  struct backtrace_freelist_struct *next;
+  /* Size of this block, including this structure.  */
+  size_t size;
+};
+
+/* Free memory allocated by backtrace_alloc.  */
+
+static void
+backtrace_free_locked (struct backtrace_state *state, void *addr, size_t size)
+{
+  /* Just leak small blocks.  We don't have to be perfect.  Don't put
+     more than 16 entries on the free list, to avoid wasting time
+     searching when allocating a block.  If we have more than 16
+     entries, leak the smallest entry.  */
+
+  if (size >= sizeof (struct backtrace_freelist_struct))
+    {
+      size_t c;
+      struct backtrace_freelist_struct **ppsmall;
+      struct backtrace_freelist_struct **pp;
+      struct backtrace_freelist_struct *p;
+
+      c = 0;
+      ppsmall = NULL;
+      for (pp = &state->freelist; *pp != NULL; pp = &(*pp)->next)
+	{
+	  if (ppsmall == NULL || (*pp)->size < (*ppsmall)->size)
+	    ppsmall = pp;
+	  ++c;
+	}
+      if (c >= 16)
+	{
+	  if (size <= (*ppsmall)->size)
+	    return;
+	  *ppsmall = (*ppsmall)->next;
+	}
+
+      p = (struct backtrace_freelist_struct *) addr;
+      p->next = state->freelist;
+      p->size = size;
+      state->freelist = p;
+    }
+}
+
+/* Allocate memory like malloc.  If ERROR_CALLBACK is NULL, don't
+   report an error.  */
+
+void *
+backtrace_alloc (struct backtrace_state *state,
+		 size_t size, backtrace_error_callback error_callback,
+		 void *data)
+{
+  void *ret;
+  int locked;
+  struct backtrace_freelist_struct **pp;
+  size_t pagesize;
+  size_t asksize;
+  void *page;
+
+  ret = NULL;
+
+  /* If we can acquire the lock, then see if there is space on the
+     free list.  If we can't acquire the lock, drop straight into
+     using mmap.  __sync_lock_test_and_set returns the old state of
+     the lock, so we have acquired it if it returns 0.  */
+
+  if (!state->threaded)
+    locked = 1;
+  else
+    locked = __sync_lock_test_and_set (&state->lock_alloc, 1) == 0;
+
+  if (locked)
+    {
+      for (pp = &state->freelist; *pp != NULL; pp = &(*pp)->next)
+	{
+	  if ((*pp)->size >= size)
+	    {
+	      struct backtrace_freelist_struct *p;
+
+	      p = *pp;
+	      *pp = p->next;
+
+	      /* Round for alignment; we assume that no type we care about
+		 is more than 8 bytes.  */
+	      size = (size + 7) & ~ (size_t) 7;
+	      if (size < p->size)
+		backtrace_free_locked (state, (char *) p + size,
+				       p->size - size);
+
+	      ret = (void *) p;
+
+	      break;
+	    }
+	}
+
+      if (state->threaded)
+	__sync_lock_release (&state->lock_alloc);
+    }
+
+  if (ret == NULL)
+    {
+      /* Allocate a new page.  */
+
+      pagesize = getpagesize ();
+      asksize = (size + pagesize - 1) & ~ (pagesize - 1);
+      page = mmap (NULL, asksize, PROT_READ | PROT_WRITE,
+		   MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+      if (page == MAP_FAILED)
+	{
+	  if (error_callback)
+	    error_callback (data, "mmap", errno);
+	}
+      else
+	{
+	  size = (size + 7) & ~ (size_t) 7;
+	  if (size < asksize)
+	    backtrace_free (state, (char *) page + size, asksize - size,
+			    error_callback, data);
+
+	  ret = page;
+	}
+    }
+
+  return ret;
+}
+
+/* Free memory allocated by backtrace_alloc.  */
+
+void
+backtrace_free (struct backtrace_state *state, void *addr, size_t size,
+		backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+		void *data ATTRIBUTE_UNUSED)
+{
+  int locked;
+
+  /* If we are freeing a large aligned block, just release it back to
+     the system.  This case arises when growing a vector for a large
+     binary with lots of debug info.  Calling munmap here may cause us
+     to call mmap again if there is also a large shared library; we
+     just live with that.  */
+  if (size >= 16 * 4096)
+    {
+      size_t pagesize;
+
+      pagesize = getpagesize ();
+      if (((uintptr_t) addr & (pagesize - 1)) == 0
+	  && (size & (pagesize - 1)) == 0)
+	{
+	  /* If munmap fails for some reason, just add the block to
+	     the freelist.  */
+	  if (munmap (addr, size) == 0)
+	    return;
+	}
+    }
+
+  /* If we can acquire the lock, add the new space to the free list.
+     If we can't acquire the lock, just leak the memory.
+     __sync_lock_test_and_set returns the old state of the lock, so we
+     have acquired it if it returns 0.  */
+
+  if (!state->threaded)
+    locked = 1;
+  else
+    locked = __sync_lock_test_and_set (&state->lock_alloc, 1) == 0;
+
+  if (locked)
+    {
+      backtrace_free_locked (state, addr, size);
+
+      if (state->threaded)
+	__sync_lock_release (&state->lock_alloc);
+    }
+}
+
+/* Grow VEC by SIZE bytes.  */
+
+void *
+backtrace_vector_grow (struct backtrace_state *state,size_t size,
+		       backtrace_error_callback error_callback,
+		       void *data, struct backtrace_vector *vec)
+{
+  void *ret;
+
+  if (size > vec->alc)
+    {
+      size_t pagesize;
+      size_t alc;
+      void *base;
+
+      pagesize = getpagesize ();
+      alc = vec->size + size;
+      if (vec->size == 0)
+	alc = 16 * size;
+      else if (alc < pagesize)
+	{
+	  alc *= 2;
+	  if (alc > pagesize)
+	    alc = pagesize;
+	}
+      else
+	{
+	  alc *= 2;
+	  alc = (alc + pagesize - 1) & ~ (pagesize - 1);
+	}
+      base = backtrace_alloc (state, alc, error_callback, data);
+      if (base == NULL)
+	return NULL;
+      if (vec->base != NULL)
+	{
+	  memcpy (base, vec->base, vec->size);
+	  backtrace_free (state, vec->base, vec->size + vec->alc,
+			  error_callback, data);
+	}
+      vec->base = base;
+      vec->alc = alc - vec->size;
+    }
+
+  ret = (char *) vec->base + vec->size;
+  vec->size += size;
+  vec->alc -= size;
+  return ret;
+}
+
+/* Finish the current allocation on VEC.  */
+
+void *
+backtrace_vector_finish (
+  struct backtrace_state *state ATTRIBUTE_UNUSED,
+  struct backtrace_vector *vec,
+  backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+  void *data ATTRIBUTE_UNUSED)
+{
+  void *ret;
+
+  ret = vec->base;
+  vec->base = (char *) vec->base + vec->size;
+  vec->size = 0;
+  return ret;
+}
+
+/* Release any extra space allocated for VEC.  */
+
+int
+backtrace_vector_release (struct backtrace_state *state,
+			  struct backtrace_vector *vec,
+			  backtrace_error_callback error_callback,
+			  void *data)
+{
+  size_t size;
+  size_t alc;
+  size_t aligned;
+
+  /* Make sure that the block that we free is aligned on an 8-byte
+     boundary.  */
+  size = vec->size;
+  alc = vec->alc;
+  aligned = (size + 7) & ~ (size_t) 7;
+  alc -= aligned - size;
+
+  backtrace_free (state, (char *) vec->base + aligned, alc,
+		  error_callback, data);
+  vec->alc = 0;
+  if (vec->size == 0)
+    vec->base = NULL;
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/mmapio.c b/fluent-bit/lib/libbacktrace-8602fda/mmapio.c
new file mode 100644
index 000000000..7f6fa8d27
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/mmapio.c
@@ -0,0 +1,110 @@
+/* mmapio.c -- File views using mmap.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <unistd.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+#ifndef HAVE_DECL_GETPAGESIZE
+extern int getpagesize (void);
+#endif
+
+#ifndef MAP_FAILED
+#define MAP_FAILED ((void *)-1)
+#endif
+
+/* This file implements file views and memory allocation when mmap is
+   available.  */
+
+/* Create a view of SIZE bytes from DESCRIPTOR at OFFSET.  */
+
+int
+backtrace_get_view (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		    int descriptor, off_t offset, uint64_t size,
+		    backtrace_error_callback error_callback,
+		    void *data, struct backtrace_view *view)
+{
+  size_t pagesize;
+  unsigned int inpage;
+  off_t pageoff;
+  void *map;
+
+  if ((uint64_t) (size_t) size != size)
+    {
+      error_callback (data, "file size too large", 0);
+      return 0;
+    }
+
+  pagesize = getpagesize ();
+  inpage = offset % pagesize;
+  pageoff = offset - inpage;
+
+  size += inpage;
+  size = (size + (pagesize - 1)) & ~ (pagesize - 1);
+
+  map = mmap (NULL, size, PROT_READ, MAP_PRIVATE, descriptor, pageoff);
+  if (map == MAP_FAILED)
+    {
+      error_callback (data, "mmap", errno);
+      return 0;
+    }
+
+  view->data = (char *) map + inpage;
+  view->base = map;
+  view->len = size;
+
+  return 1;
+}
+
+/* Release a view read by backtrace_get_view.  */
+
+void
+backtrace_release_view (struct backtrace_state *state ATTRIBUTE_UNUSED,
+			struct backtrace_view *view,
+			backtrace_error_callback error_callback,
+			void *data)
+{
+  union {
+    const void *cv;
+    void *v;
+  } const_cast;
+
+  const_cast.cv = view->base;
+  if (munmap (const_cast.v, view->len) < 0)
+    error_callback (data, "munmap", errno);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/move-if-change b/fluent-bit/lib/libbacktrace-8602fda/move-if-change
new file mode 100755
index 000000000..88d957456
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/move-if-change
@@ -0,0 +1,83 @@
+#!/bin/sh
+# Like mv $1 $2, but if the files are the same, just delete $1.
+# Status is zero if successful, nonzero otherwise.
+
+VERSION='2012-01-06 07:23'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job.  Otherwise, update this string manually.
+
+# Copyright (C) 2002-2014 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+usage="usage: $0 SOURCE DEST"
+
+help="$usage
+  or:  $0 OPTION
+If SOURCE is different than DEST, then move it to DEST; else remove SOURCE.
+
+  --help     display this help and exit
+  --version  output version information and exit
+
+The variable CMPPROG can be used to specify an alternative to 'cmp'.
+
+Report bugs to <bug-gnulib@gnu.org>."
+
+version=`expr "$VERSION" : '\([^ ]*\)'`
+version="move-if-change (gnulib) $version
+Copyright (C) 2011 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
+cmpprog=${CMPPROG-cmp}
+
+for arg
+do
+  case $arg in
+    --help | --hel | --he | --h)
+      exec echo "$help" ;;
+    --version | --versio | --versi | --vers | --ver | --ve | --v)
+      exec echo "$version" ;;
+    --)
+      shift
+      break ;;
+    -*)
+      echo "$0: invalid option: $arg" >&2
+      exit 1 ;;
+    *)
+      break ;;
+  esac
+done
+
+test $# -eq 2 || { echo "$0: $usage" >&2; exit 1; }
+
+if test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null; then
+  rm -f -- "$1"
+else
+  if mv -f -- "$1" "$2"; then :; else
+    # Ignore failure due to a concurrent move-if-change.
+    test -r "$2" && $cmpprog -- "$1" "$2" >/dev/null && rm -f -- "$1"
+  fi
+fi
+
+## Local Variables:
+## eval: (add-hook 'write-file-hooks 'time-stamp)
+## time-stamp-start: "VERSION='"
+## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+## time-stamp-time-zone: "UTC"
+## time-stamp-end: "'; # UTC"
+## End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/mtest.c b/fluent-bit/lib/libbacktrace-8602fda/mtest.c
new file mode 100644
index 000000000..7e0189a28
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/mtest.c
@@ -0,0 +1,410 @@
+/* mtest.c -- Minidebug test for libbacktrace library
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* This program tests using libbacktrace with a program that uses the
+   minidebuginfo format in a .gnu_debugdata section.  See
+   https://sourceware.org/gdb/current/onlinedocs/gdb/MiniDebugInfo.html
+   for a bit more information about minidebuginfo.  What is relevant
+   for libbacktrace is that we have just a symbol table, with no debug
+   info, so we should be able to do a function backtrace, but we can't
+   do a file/line backtrace.  */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+static int test1 (void) __attribute__ ((noinline, noclone, unused));
+static int f2 (int) __attribute__ ((noinline, noclone));
+static int f3 (int, int) __attribute__ ((noinline, noclone));
+
+/* Collected PC values.  */
+
+static uintptr_t addrs[20];
+
+/* The backtrace callback function.  This is like callback_one in
+   testlib.c, but it saves the PC also.  */
+
+static int
+callback_mtest (void *vdata, uintptr_t pc, const char *filename, int lineno,
+		const char *function)
+{
+  struct bdata *data = (struct bdata *) vdata;
+
+  if (data->index >= sizeof addrs / sizeof addrs[0])
+    {
+      fprintf (stderr, "callback_mtest: callback called too many times\n");
+      data->failed = 1;
+      return 1;
+    }
+
+  addrs[data->index] = pc;
+
+  return callback_one (vdata, pc, filename, lineno, function);
+}
+
+/* Test the backtrace function with non-inlined functions.  (We don't
+   test with inlined functions because they won't work with minidebug
+   anyhow.)  */
+
+static int
+test1 (void)
+{
+  /* Returning a value here and elsewhere avoids a tailcall which
+     would mess up the backtrace.  */
+  return f2 (__LINE__) + 1;
+}
+
+static int
+f2 (int f1line)
+{
+  return f3 (f1line, __LINE__) + 2;
+}
+
+static int
+f3 (int f1line __attribute__ ((unused)), int f2line __attribute__ ((unused)))
+{
+  struct info all[20];
+  struct bdata data;
+  int i;
+  size_t j;
+
+  data.all = &all[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  i = backtrace_full (state, 0, callback_mtest, error_callback_one, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test1: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (data.index < 3)
+    {
+      fprintf (stderr,
+	       "test1: not enough frames; got %zu, expected at least 3\n",
+	       data.index);
+      data.failed = 1;
+    }
+
+  /* When using minidebug we don't expect the function name here.  */
+
+  for (j = 0; j < 3 && j < data.index; j++)
+    {
+      if (all[j].function == NULL)
+	{
+	  struct symdata symdata;
+
+	  symdata.name = NULL;
+	  symdata.val = 0;
+	  symdata.size = 0;
+	  symdata.failed = 0;
+
+	  i = backtrace_syminfo (state, addrs[j], callback_three,
+				 error_callback_three, &symdata);
+	  if (i == 0)
+	    {
+	      fprintf (stderr,
+		       ("test1: [%zu], unexpected return value from "
+			"backtrace_syminfo %d\n"),
+		       j, i);
+	      data.failed = 1;
+	    }
+	  else if (symdata.name == NULL)
+	    {
+	      fprintf (stderr, "test1: [%zu]: syminfo did not find name\n", j);
+	      data.failed = 1;
+	    }
+	  else
+	    all[j].function = strdup (symdata.name);
+	}
+    }
+
+  if (data.index > 0)
+    {
+      if (all[0].function == NULL)
+	{
+	  fprintf (stderr, "test1: [0]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[0].function, "f3") != 0)
+	{
+	  fprintf (stderr, "test1: [0]: got %s expected %s\n",
+		   all[0].function, "f3");
+	  data.failed = 1;
+	}
+    }
+
+  if (data.index > 1)
+    {
+      if (all[1].function == NULL)
+	{
+	  fprintf (stderr, "test1: [1]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[1].function, "f2") != 0)
+	{
+	  fprintf (stderr, "test1: [1]: got %s expected %s\n",
+		   all[0].function, "f2");
+	  data.failed = 1;
+	}
+    }
+
+  if (data.index > 2)
+    {
+      if (all[2].function == NULL)
+	{
+	  fprintf (stderr, "test1: [2]: missing function name\n");
+	  data.failed = 1;
+	}
+      else if (strcmp (all[2].function, "test1") != 0)
+	{
+	  fprintf (stderr, "test1: [2]: got %s expected %s\n",
+		   all[0].function, "test1");
+	  data.failed = 1;
+	}
+    }
+
+  printf ("%s: backtrace_full noinline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+/* Test the backtrace_simple function with non-inlined functions.  */
+
+static int test3 (void) __attribute__ ((noinline, noclone, unused));
+static int f22 (int) __attribute__ ((noinline, noclone));
+static int f23 (int, int) __attribute__ ((noinline, noclone));
+
+static int
+test3 (void)
+{
+  return f22 (__LINE__) + 1;
+}
+
+static int
+f22 (int f1line)
+{
+  return f23 (f1line, __LINE__) + 2;
+}
+
+static int
+f23 (int f1line __attribute__ ((unused)), int f2line __attribute__ ((unused)))
+{
+  uintptr_t addrs[20];
+  struct sdata data;
+  int i;
+
+  data.addrs = &addrs[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  i = backtrace_simple (state, 0, callback_two, error_callback_two, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test3: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (!data.failed)
+    {
+      int j;
+
+      for (j = 0; j < 3; ++j)
+	{
+	  struct symdata symdata;
+
+	  symdata.name = NULL;
+	  symdata.val = 0;
+	  symdata.size = 0;
+	  symdata.failed = 0;
+
+	  i = backtrace_syminfo (state, addrs[j], callback_three,
+				 error_callback_three, &symdata);
+	  if (i == 0)
+	    {
+	      fprintf (stderr,
+		       ("test3: [%d]: unexpected return value "
+			"from backtrace_syminfo %d\n"),
+		       j, i);
+	      symdata.failed = 1;
+	    }
+
+	  if (!symdata.failed)
+	    {
+	      const char *expected;
+
+	      switch (j)
+		{
+		case 0:
+		  expected = "f23";
+		  break;
+		case 1:
+		  expected = "f22";
+		  break;
+		case 2:
+		  expected = "test3";
+		  break;
+		default:
+		  assert (0);
+		}
+
+	      if (symdata.name == NULL)
+		{
+		  fprintf (stderr, "test3: [%d]: NULL syminfo name\n", j);
+		  symdata.failed = 1;
+		}
+	      /* Use strncmp, not strcmp, because GCC might create a
+		 clone.  */
+	      else if (strncmp (symdata.name, expected, strlen (expected))
+		       != 0)
+		{
+		  fprintf (stderr,
+			   ("test3: [%d]: unexpected syminfo name "
+			    "got %s expected %s\n"),
+			   j, symdata.name, expected);
+		  symdata.failed = 1;
+		}
+	    }
+
+	  if (symdata.failed)
+	    data.failed = 1;
+	}
+    }
+
+  printf ("%s: backtrace_simple noinline\n", data.failed ? "FAIL" : "PASS");
+
+  if (data.failed)
+    ++failures;
+
+  return failures;
+}
+
+int test5 (void) __attribute__ ((unused));
+
+int global = 1;
+
+int
+test5 (void)
+{
+  struct symdata symdata;
+  int i;
+  uintptr_t addr = (uintptr_t) &global;
+
+  if (sizeof (global) > 1)
+    addr += 1;
+
+  symdata.name = NULL;
+  symdata.val = 0;
+  symdata.size = 0;
+  symdata.failed = 0;
+
+  i = backtrace_syminfo (state, addr, callback_three,
+			 error_callback_three, &symdata);
+  if (i == 0)
+    {
+      fprintf (stderr,
+	       "test5: unexpected return value from backtrace_syminfo %d\n",
+	       i);
+      symdata.failed = 1;
+    }
+
+  if (!symdata.failed)
+    {
+      if (symdata.name == NULL)
+	{
+	  fprintf (stderr, "test5: NULL syminfo name\n");
+	  symdata.failed = 1;
+	}
+      else if (!(strncmp (symdata.name, "global", 6) == 0
+		 && (symdata.name[6] == '\0'|| symdata.name[6] == '.')))
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo name got %s expected %s\n",
+		   symdata.name, "global");
+	  symdata.failed = 1;
+	}
+      else if (symdata.val != (uintptr_t) &global)
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo value got %lx expected %lx\n",
+		   (unsigned long) symdata.val,
+		   (unsigned long) (uintptr_t) &global);
+	  symdata.failed = 1;
+	}
+      else if (symdata.size != sizeof (global))
+	{
+	  fprintf (stderr,
+		   "test5: unexpected syminfo size got %lx expected %lx\n",
+		   (unsigned long) symdata.size,
+		   (unsigned long) sizeof (global));
+	  symdata.failed = 1;
+	}
+    }
+
+  printf ("%s: backtrace_syminfo variable\n",
+	  symdata.failed ? "FAIL" : "PASS");
+
+  if (symdata.failed)
+    ++failures;
+
+  return failures;
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+#if BACKTRACE_SUPPORTED
+  test1 ();
+  test3 ();
+#if BACKTRACE_SUPPORTS_DATA
+  test5 ();
+#endif
+#endif
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/nounwind.c b/fluent-bit/lib/libbacktrace-8602fda/nounwind.c
new file mode 100644
index 000000000..0eea7139b
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/nounwind.c
@@ -0,0 +1,66 @@
+/* backtrace.c -- Entry point for stack backtrace library.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include "backtrace.h"
+
+#include "internal.h"
+
+/* This source file is compiled if the unwind library is not
+   available.  */
+
+int
+backtrace_full (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		int skip ATTRIBUTE_UNUSED,
+		backtrace_full_callback callback ATTRIBUTE_UNUSED,
+		backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data,
+		  "no stack trace because unwind library not available",
+		  0);
+  return 0;
+}
+
+int
+backtrace_simple (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		  int skip ATTRIBUTE_UNUSED,
+		  backtrace_simple_callback callback ATTRIBUTE_UNUSED,
+		  backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data,
+		  "no stack trace because unwind library not available",
+		  0);
+  return 0;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/pecoff.c b/fluent-bit/lib/libbacktrace-8602fda/pecoff.c
new file mode 100644
index 000000000..720251900
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/pecoff.c
@@ -0,0 +1,935 @@
+/* pecoff.c -- Get debug data from a PE/COFFF file for backtraces.
+   Copyright (C) 2015-2021 Free Software Foundation, Inc.
+   Adapted from elf.c by Tristan Gingold, AdaCore.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Coff file header.  */
+
+typedef struct {
+  uint16_t machine;
+  uint16_t number_of_sections;
+  uint32_t time_date_stamp;
+  uint32_t pointer_to_symbol_table;
+  uint32_t number_of_symbols;
+  uint16_t size_of_optional_header;
+  uint16_t characteristics;
+} b_coff_file_header;
+
+/* Coff optional header.  */
+
+typedef struct {
+  uint16_t magic;
+  uint8_t  major_linker_version;
+  uint8_t  minor_linker_version;
+  uint32_t size_of_code;
+  uint32_t size_of_initialized_data;
+  uint32_t size_of_uninitialized_data;
+  uint32_t address_of_entry_point;
+  uint32_t base_of_code;
+  union {
+    struct {
+      uint32_t base_of_data;
+      uint32_t image_base;
+    } pe;
+    struct {
+      uint64_t image_base;
+    } pep;
+  } u;
+} b_coff_optional_header;
+
+/* Values of magic in optional header.  */
+
+#define PE_MAGIC 0x10b		/* PE32 executable.  */
+#define PEP_MAGIC 0x20b		/* PE32+ executable (for 64bit targets).  */
+
+/* Coff section header.  */
+
+typedef struct {
+  char name[8];
+  uint32_t virtual_size;
+  uint32_t virtual_address;
+  uint32_t size_of_raw_data;
+  uint32_t pointer_to_raw_data;
+  uint32_t pointer_to_relocations;
+  uint32_t pointer_to_line_numbers;
+  uint16_t number_of_relocations;
+  uint16_t number_of_line_numbers;
+  uint32_t characteristics;
+} b_coff_section_header;
+
+/* Coff symbol name.  */
+
+typedef union {
+  char short_name[8];
+  struct {
+    unsigned char zeroes[4];
+    unsigned char off[4];
+  } long_name;
+} b_coff_name;
+
+/* Coff symbol (external representation which is unaligned).  */
+
+typedef struct {
+  b_coff_name name;
+  unsigned char value[4];
+  unsigned char section_number[2];
+  unsigned char type[2];
+  unsigned char storage_class;
+  unsigned char number_of_aux_symbols;
+} b_coff_external_symbol;
+
+/* Symbol types.  */
+
+#define N_TBSHFT 4			/* Shift for the derived type.  */
+#define IMAGE_SYM_DTYPE_FUNCTION 2	/* Function derived type.  */
+
+/* Size of a coff symbol.  */
+
+#define SYM_SZ 18
+
+/* Coff symbol, internal representation (aligned).  */
+
+typedef struct {
+  const char *name;
+  uint32_t value;
+  int16_t sec;
+  uint16_t type;
+  uint16_t sc;
+} b_coff_internal_symbol;
+
+/* Names of sections, indexed by enum dwarf_section in internal.h.  */
+
+static const char * const debug_section_names[DEBUG_MAX] =
+{
+  ".debug_info",
+  ".debug_line",
+  ".debug_abbrev",
+  ".debug_ranges",
+  ".debug_str",
+  ".debug_addr",
+  ".debug_str_offsets",
+  ".debug_line_str",
+  ".debug_rnglists"
+};
+
+/* Information we gather for the sections we care about.  */
+
+struct debug_section_info
+{
+  /* Section file offset.  */
+  off_t offset;
+  /* Section size.  */
+  size_t size;
+};
+
+/* Information we keep for an coff symbol.  */
+
+struct coff_symbol
+{
+  /* The name of the symbol.  */
+  const char *name;
+  /* The address of the symbol.  */
+  uintptr_t address;
+};
+
+/* Information to pass to coff_syminfo.  */
+
+struct coff_syminfo_data
+{
+  /* Symbols for the next module.  */
+  struct coff_syminfo_data *next;
+  /* The COFF symbols, sorted by address.  */
+  struct coff_symbol *symbols;
+  /* The number of symbols.  */
+  size_t count;
+};
+
+/* A dummy callback function used when we can't find any debug info.  */
+
+static int
+coff_nodebug (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	      uintptr_t pc ATTRIBUTE_UNUSED,
+	      backtrace_full_callback callback ATTRIBUTE_UNUSED,
+	      backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no debug info in PE/COFF executable", -1);
+  return 0;
+}
+
+/* A dummy callback function used when we can't find a symbol
+   table.  */
+
+static void
+coff_nosyms (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	     uintptr_t addr ATTRIBUTE_UNUSED,
+	     backtrace_syminfo_callback callback ATTRIBUTE_UNUSED,
+	     backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no symbol table in PE/COFF executable", -1);
+}
+
+/* Read a potentially unaligned 4 byte word at P, using native endianness.  */
+
+static uint32_t
+coff_read4 (const unsigned char *p)
+{
+  uint32_t res;
+
+  memcpy (&res, p, 4);
+  return res;
+}
+
+/* Read a potentially unaligned 2 byte word at P, using native endianness.
+   All 2 byte word in symbols are always aligned, but for coherency all
+   fields are declared as char arrays.  */
+
+static uint16_t
+coff_read2 (const unsigned char *p)
+{
+  uint16_t res;
+
+  memcpy (&res, p, sizeof (res));
+  return res;
+}
+
+/* Return the length (without the trailing 0) of a COFF short name.  */
+
+static size_t
+coff_short_name_len (const char *name)
+{
+  int i;
+
+  for (i = 0; i < 8; i++)
+    if (name[i] == 0)
+      return i;
+  return 8;
+}
+
+/* Return true iff COFF short name CNAME is the same as NAME (a NUL-terminated
+   string).  */
+
+static int
+coff_short_name_eq (const char *name, const char *cname)
+{
+  int i;
+
+  for (i = 0; i < 8; i++)
+    {
+      if (name[i] != cname[i])
+	return 0;
+      if (name[i] == 0)
+	return 1;
+    }
+  return name[8] == 0;
+}
+
+/* Return true iff NAME is the same as string at offset OFF.  */
+
+static int
+coff_long_name_eq (const char *name, unsigned int off,
+		   struct backtrace_view *str_view)
+{
+  if (off >= str_view->len)
+    return 0;
+  return strcmp (name, (const char *)str_view->data + off) == 0;
+}
+
+/* Compare struct coff_symbol for qsort.  */
+
+static int
+coff_symbol_compare (const void *v1, const void *v2)
+{
+  const struct coff_symbol *e1 = (const struct coff_symbol *) v1;
+  const struct coff_symbol *e2 = (const struct coff_symbol *) v2;
+
+  if (e1->address < e2->address)
+    return -1;
+  else if (e1->address > e2->address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Convert SYM to internal (and aligned) format ISYM, using string table
+   from STRTAB and STRTAB_SIZE, and number of sections SECTS_NUM.
+   Return -1 in case of error (invalid section number or string index).  */
+
+static int
+coff_expand_symbol (b_coff_internal_symbol *isym,
+		    const b_coff_external_symbol *sym,
+		    uint16_t sects_num,
+		    const unsigned char *strtab, size_t strtab_size)
+{
+  isym->type = coff_read2 (sym->type);
+  isym->sec = coff_read2 (sym->section_number);
+  isym->sc = sym->storage_class;
+
+  if (isym->sec > 0 && (uint16_t) isym->sec > sects_num)
+    return -1;
+  if (sym->name.short_name[0] != 0)
+    isym->name = sym->name.short_name;
+  else
+    {
+      uint32_t off = coff_read4 (sym->name.long_name.off);
+
+      if (off >= strtab_size)
+	return -1;
+      isym->name = (const char *) strtab + off;
+    }
+  return 0;
+}
+
+/* Return true iff SYM is a defined symbol for a function.  Data symbols
+   aren't considered because they aren't easily identified (same type as
+   section names, presence of symbols defined by the linker script).  */
+
+static int
+coff_is_function_symbol (const b_coff_internal_symbol *isym)
+{
+  return (isym->type >> N_TBSHFT) == IMAGE_SYM_DTYPE_FUNCTION
+    && isym->sec > 0;
+}
+
+/* Initialize the symbol table info for coff_syminfo.  */
+
+static int
+coff_initialize_syminfo (struct backtrace_state *state,
+			 uintptr_t base_address, int is_64,
+			 const b_coff_section_header *sects, size_t sects_num,
+			 const b_coff_external_symbol *syms, size_t syms_size,
+			 const unsigned char *strtab, size_t strtab_size,
+			 backtrace_error_callback error_callback,
+			 void *data, struct coff_syminfo_data *sdata)
+{
+  size_t syms_count;
+  char *coff_symstr;
+  size_t coff_symstr_len;
+  size_t coff_symbol_count;
+  size_t coff_symbol_size;
+  struct coff_symbol *coff_symbols;
+  struct coff_symbol *coff_sym;
+  char *coff_str;
+  size_t i;
+
+  syms_count = syms_size / SYM_SZ;
+
+  /* We only care about function symbols.  Count them.  Also count size of
+     strings for in-symbol names.  */
+  coff_symbol_count = 0;
+  coff_symstr_len = 0;
+  for (i = 0; i < syms_count; ++i)
+    {
+      const b_coff_external_symbol *asym = &syms[i];
+      b_coff_internal_symbol isym;
+
+      if (coff_expand_symbol (&isym, asym, sects_num, strtab, strtab_size) < 0)
+	{
+	  error_callback (data, "invalid section or offset in coff symbol", 0);
+	  return 0;
+	}
+      if (coff_is_function_symbol (&isym))
+	{
+	  ++coff_symbol_count;
+	  if (asym->name.short_name[0] != 0)
+	    coff_symstr_len += coff_short_name_len (asym->name.short_name) + 1;
+	}
+
+      i += asym->number_of_aux_symbols;
+    }
+
+  coff_symbol_size = (coff_symbol_count + 1) * sizeof (struct coff_symbol);
+  coff_symbols = ((struct coff_symbol *)
+		  backtrace_alloc (state, coff_symbol_size, error_callback,
+				   data));
+  if (coff_symbols == NULL)
+    return 0;
+
+  /* Allocate memory for symbols strings.  */
+  if (coff_symstr_len > 0)
+    {
+      coff_symstr = ((char *)
+		     backtrace_alloc (state, coff_symstr_len, error_callback,
+				      data));
+      if (coff_symstr == NULL)
+	{
+	  backtrace_free (state, coff_symbols, coff_symbol_size,
+			  error_callback, data);
+	  return 0;
+	}
+    }
+  else
+    coff_symstr = NULL;
+
+  /* Copy symbols.  */
+  coff_sym = coff_symbols;
+  coff_str = coff_symstr;
+  for (i = 0; i < syms_count; ++i)
+    {
+      const b_coff_external_symbol *asym = &syms[i];
+      b_coff_internal_symbol isym;
+
+      if (coff_expand_symbol (&isym, asym, sects_num, strtab, strtab_size))
+	{
+	  /* Should not fail, as it was already tested in the previous
+	     loop.  */
+	  abort ();
+	}
+      if (coff_is_function_symbol (&isym))
+	{
+	  const char *name;
+	  int16_t secnum;
+
+	  if (asym->name.short_name[0] != 0)
+	    {
+	      size_t len = coff_short_name_len (isym.name);
+	      name = coff_str;
+	      memcpy (coff_str, isym.name, len);
+	      coff_str[len] = 0;
+	      coff_str += len + 1;
+	    }
+	  else
+	    name = isym.name;
+
+	  if (!is_64)
+	    {
+	      /* Strip leading '_'.  */
+	      if (name[0] == '_')
+		name++;
+	    }
+
+	  /* Symbol value is section relative, so we need to read the address
+	     of its section.  */
+	  secnum = coff_read2 (asym->section_number);
+
+	  coff_sym->name = name;
+	  coff_sym->address = (coff_read4 (asym->value)
+			       + sects[secnum - 1].virtual_address
+			       + base_address);
+	  coff_sym++;
+	}
+
+      i += asym->number_of_aux_symbols;
+    }
+
+  /* End of symbols marker.  */
+  coff_sym->name = NULL;
+  coff_sym->address = -1;
+
+  backtrace_qsort (coff_symbols, coff_symbol_count,
+		   sizeof (struct coff_symbol), coff_symbol_compare);
+
+  sdata->next = NULL;
+  sdata->symbols = coff_symbols;
+  sdata->count = coff_symbol_count;
+
+  return 1;
+}
+
+/* Add EDATA to the list in STATE.  */
+
+static void
+coff_add_syminfo_data (struct backtrace_state *state,
+		       struct coff_syminfo_data *sdata)
+{
+  if (!state->threaded)
+    {
+      struct coff_syminfo_data **pp;
+
+      for (pp = (struct coff_syminfo_data **) (void *) &state->syminfo_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = sdata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct coff_syminfo_data **pp;
+
+	  pp = (struct coff_syminfo_data **) (void *) &state->syminfo_data;
+
+	  while (1)
+	    {
+	      struct coff_syminfo_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, sdata))
+	    break;
+	}
+    }
+}
+
+/* Compare an ADDR against an elf_symbol for bsearch.  We allocate one
+   extra entry in the array so that this can look safely at the next
+   entry.  */
+
+static int
+coff_symbol_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct coff_symbol *entry = (const struct coff_symbol *) ventry;
+  uintptr_t addr;
+
+  addr = *key;
+  if (addr < entry->address)
+    return -1;
+  else if (addr >= entry[1].address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Return the symbol name and value for an ADDR.  */
+
+static void
+coff_syminfo (struct backtrace_state *state, uintptr_t addr,
+	      backtrace_syminfo_callback callback,
+	      backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+	      void *data)
+{
+  struct coff_syminfo_data *sdata;
+  struct coff_symbol *sym = NULL;
+
+  if (!state->threaded)
+    {
+      for (sdata = (struct coff_syminfo_data *) state->syminfo_data;
+	   sdata != NULL;
+	   sdata = sdata->next)
+	{
+	  sym = ((struct coff_symbol *)
+		 bsearch (&addr, sdata->symbols, sdata->count,
+			  sizeof (struct coff_symbol), coff_symbol_search));
+	  if (sym != NULL)
+	    break;
+	}
+    }
+  else
+    {
+      struct coff_syminfo_data **pp;
+
+      pp = (struct coff_syminfo_data **) (void *) &state->syminfo_data;
+      while (1)
+	{
+	  sdata = backtrace_atomic_load_pointer (pp);
+	  if (sdata == NULL)
+	    break;
+
+	  sym = ((struct coff_symbol *)
+		 bsearch (&addr, sdata->symbols, sdata->count,
+			  sizeof (struct coff_symbol), coff_symbol_search));
+	  if (sym != NULL)
+	    break;
+
+	  pp = &sdata->next;
+	}
+    }
+
+  if (sym == NULL)
+    callback (data, addr, NULL, 0, 0);
+  else
+    callback (data, addr, sym->name, sym->address, 0);
+}
+
+/* Add the backtrace data for one PE/COFF file.  Returns 1 on success,
+   0 on failure (in both cases descriptor is closed).  */
+
+static int
+coff_add (struct backtrace_state *state, int descriptor,
+	  backtrace_error_callback error_callback, void *data,
+	  fileline *fileline_fn, int *found_sym, int *found_dwarf)
+{
+  struct backtrace_view fhdr_view;
+  off_t fhdr_off;
+  int magic_ok;
+  b_coff_file_header fhdr;
+  off_t opt_sects_off;
+  size_t opt_sects_size;
+  unsigned int sects_num;
+  struct backtrace_view sects_view;
+  int sects_view_valid;
+  const b_coff_optional_header *opt_hdr;
+  const b_coff_section_header *sects;
+  struct backtrace_view str_view;
+  int str_view_valid;
+  size_t str_size;
+  off_t str_off;
+  struct backtrace_view syms_view;
+  off_t syms_off;
+  size_t syms_size;
+  int syms_view_valid;
+  unsigned int syms_num;
+  unsigned int i;
+  struct debug_section_info sections[DEBUG_MAX];
+  off_t min_offset;
+  off_t max_offset;
+  struct backtrace_view debug_view;
+  int debug_view_valid;
+  int is_64;
+  uintptr_t image_base;
+  struct dwarf_sections dwarf_sections;
+
+  *found_sym = 0;
+  *found_dwarf = 0;
+
+  sects_view_valid = 0;
+  syms_view_valid = 0;
+  str_view_valid = 0;
+  debug_view_valid = 0;
+
+  /* Map the MS-DOS stub (if any) and extract file header offset.  */
+  if (!backtrace_get_view (state, descriptor, 0, 0x40, error_callback,
+			   data, &fhdr_view))
+    goto fail;
+
+  {
+    const unsigned char *vptr = fhdr_view.data;
+
+    if (vptr[0] == 'M' && vptr[1] == 'Z')
+      fhdr_off = coff_read4 (vptr + 0x3c);
+    else
+      fhdr_off = 0;
+  }
+
+  backtrace_release_view (state, &fhdr_view, error_callback, data);
+
+  /* Map the coff file header.  */
+  if (!backtrace_get_view (state, descriptor, fhdr_off,
+			   sizeof (b_coff_file_header) + 4,
+			   error_callback, data, &fhdr_view))
+    goto fail;
+
+  if (fhdr_off != 0)
+    {
+      const char *magic = (const char *) fhdr_view.data;
+      magic_ok = memcmp (magic, "PE\0", 4) == 0;
+      fhdr_off += 4;
+
+      memcpy (&fhdr, fhdr_view.data + 4, sizeof fhdr);
+    }
+  else
+    {
+      memcpy (&fhdr, fhdr_view.data, sizeof fhdr);
+      /* TODO: test fhdr.machine for coff but non-PE platforms.  */
+      magic_ok = 0;
+    }
+  backtrace_release_view (state, &fhdr_view, error_callback, data);
+
+  if (!magic_ok)
+    {
+      error_callback (data, "executable file is not COFF", 0);
+      goto fail;
+    }
+
+  sects_num = fhdr.number_of_sections;
+  syms_num = fhdr.number_of_symbols;
+
+  opt_sects_off = fhdr_off + sizeof (fhdr);
+  opt_sects_size = (fhdr.size_of_optional_header
+		    + sects_num * sizeof (b_coff_section_header));
+
+  /* To translate PC to file/line when using DWARF, we need to find
+     the .debug_info and .debug_line sections.  */
+
+  /* Read the optional header and the section headers.  */
+
+  if (!backtrace_get_view (state, descriptor, opt_sects_off, opt_sects_size,
+			   error_callback, data, &sects_view))
+    goto fail;
+  sects_view_valid = 1;
+  opt_hdr = (const b_coff_optional_header *) sects_view.data;
+  sects = (const b_coff_section_header *)
+    (sects_view.data + fhdr.size_of_optional_header);
+
+  is_64 = 0;
+  if (fhdr.size_of_optional_header > sizeof (*opt_hdr))
+    {
+      if (opt_hdr->magic == PE_MAGIC)
+	image_base = opt_hdr->u.pe.image_base;
+      else if (opt_hdr->magic == PEP_MAGIC)
+	{
+	  image_base = opt_hdr->u.pep.image_base;
+	  is_64 = 1;
+	}
+      else
+	{
+	  error_callback (data, "bad magic in PE optional header", 0);
+	  goto fail;
+	}
+    }
+  else
+    image_base = 0;
+
+  /* Read the symbol table and the string table.  */
+
+  if (fhdr.pointer_to_symbol_table == 0)
+    {
+      /* No symbol table, no string table.  */
+      str_off = 0;
+      str_size = 0;
+      syms_num = 0;
+      syms_size = 0;
+    }
+  else
+    {
+      /* Symbol table is followed by the string table.  The string table
+	 starts with its length (on 4 bytes).
+	 Map the symbol table and the length of the string table.  */
+      syms_off = fhdr.pointer_to_symbol_table;
+      syms_size = syms_num * SYM_SZ;
+
+      if (!backtrace_get_view (state, descriptor, syms_off, syms_size + 4,
+			       error_callback, data, &syms_view))
+	goto fail;
+      syms_view_valid = 1;
+
+      str_size = coff_read4 (syms_view.data + syms_size);
+
+      str_off = syms_off + syms_size;
+
+      if (str_size > 4)
+	{
+	  /* Map string table (including the length word).  */
+
+	  if (!backtrace_get_view (state, descriptor, str_off, str_size,
+				   error_callback, data, &str_view))
+	    goto fail;
+	  str_view_valid = 1;
+	}
+    }
+
+  memset (sections, 0, sizeof sections);
+
+  /* Look for the symbol table.  */
+  for (i = 0; i < sects_num; ++i)
+    {
+      const b_coff_section_header *s = sects + i;
+      unsigned int str_off;
+      int j;
+
+      if (s->name[0] == '/')
+	{
+	  /* Extended section name.  */
+	  str_off = atoi (s->name + 1);
+	}
+      else
+	str_off = 0;
+
+      for (j = 0; j < (int) DEBUG_MAX; ++j)
+	{
+	  const char *dbg_name = debug_section_names[j];
+	  int match;
+
+	  if (str_off != 0)
+	    match = coff_long_name_eq (dbg_name, str_off, &str_view);
+	  else
+	    match = coff_short_name_eq (dbg_name, s->name);
+	  if (match)
+	    {
+	      sections[j].offset = s->pointer_to_raw_data;
+	      sections[j].size = s->virtual_size <= s->size_of_raw_data ?
+		s->virtual_size : s->size_of_raw_data;
+	      break;
+	    }
+	}
+    }
+
+  if (syms_num != 0)
+    {
+      struct coff_syminfo_data *sdata;
+
+      sdata = ((struct coff_syminfo_data *)
+	       backtrace_alloc (state, sizeof *sdata, error_callback, data));
+      if (sdata == NULL)
+	goto fail;
+
+      if (!coff_initialize_syminfo (state, image_base, is_64,
+				    sects, sects_num,
+				    syms_view.data, syms_size,
+				    str_view.data, str_size,
+				    error_callback, data, sdata))
+	{
+	  backtrace_free (state, sdata, sizeof *sdata, error_callback, data);
+	  goto fail;
+	}
+
+      *found_sym = 1;
+
+      coff_add_syminfo_data (state, sdata);
+    }
+
+  backtrace_release_view (state, &sects_view, error_callback, data);
+  sects_view_valid = 0;
+  if (syms_view_valid)
+    {
+      backtrace_release_view (state, &syms_view, error_callback, data);
+      syms_view_valid = 0;
+    }
+
+  /* Read all the debug sections in a single view, since they are
+     probably adjacent in the file.  We never release this view.  */
+
+  min_offset = 0;
+  max_offset = 0;
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      off_t end;
+
+      if (sections[i].size == 0)
+	continue;
+      if (min_offset == 0 || sections[i].offset < min_offset)
+	min_offset = sections[i].offset;
+      end = sections[i].offset + sections[i].size;
+      if (end > max_offset)
+	max_offset = end;
+    }
+  if (min_offset == 0 || max_offset == 0)
+    {
+      if (!backtrace_close (descriptor, error_callback, data))
+	goto fail;
+      *fileline_fn = coff_nodebug;
+      return 1;
+    }
+
+  if (!backtrace_get_view (state, descriptor, min_offset,
+			   max_offset - min_offset,
+			   error_callback, data, &debug_view))
+    goto fail;
+  debug_view_valid = 1;
+
+  /* We've read all we need from the executable.  */
+  if (!backtrace_close (descriptor, error_callback, data))
+    goto fail;
+  descriptor = -1;
+
+  for (i = 0; i < (int) DEBUG_MAX; ++i)
+    {
+      size_t size = sections[i].size;
+      dwarf_sections.size[i] = size;
+      if (size == 0)
+	dwarf_sections.data[i] = NULL;
+      else
+	dwarf_sections.data[i] = ((const unsigned char *) debug_view.data
+				  + (sections[i].offset - min_offset));
+    }
+
+  if (!backtrace_dwarf_add (state, /* base_address */ 0, &dwarf_sections,
+			    0, /* FIXME: is_bigendian */
+			    NULL, /* altlink */
+			    error_callback, data, fileline_fn,
+			    NULL /* returned fileline_entry */))
+    goto fail;
+
+  *found_dwarf = 1;
+
+  return 1;
+
+ fail:
+  if (sects_view_valid)
+    backtrace_release_view (state, &sects_view, error_callback, data);
+  if (str_view_valid)
+    backtrace_release_view (state, &str_view, error_callback, data);
+  if (syms_view_valid)
+    backtrace_release_view (state, &syms_view, error_callback, data);
+  if (debug_view_valid)
+    backtrace_release_view (state, &debug_view, error_callback, data);
+  if (descriptor != -1)
+    backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+/* Initialize the backtrace data we need from an ELF executable.  At
+   the ELF level, all we need to do is find the debug info
+   sections.  */
+
+int
+backtrace_initialize (struct backtrace_state *state,
+		      const char *filename ATTRIBUTE_UNUSED, int descriptor,
+		      backtrace_error_callback error_callback,
+		      void *data, fileline *fileline_fn)
+{
+  int ret;
+  int found_sym;
+  int found_dwarf;
+  fileline coff_fileline_fn;
+
+  ret = coff_add (state, descriptor, error_callback, data,
+		  &coff_fileline_fn, &found_sym, &found_dwarf);
+  if (!ret)
+    return 0;
+
+  if (!state->threaded)
+    {
+      if (found_sym)
+	state->syminfo_fn = coff_syminfo;
+      else if (state->syminfo_fn == NULL)
+	state->syminfo_fn = coff_nosyms;
+    }
+  else
+    {
+      if (found_sym)
+	backtrace_atomic_store_pointer (&state->syminfo_fn, coff_syminfo);
+      else
+	(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
+					     coff_nosyms);
+    }
+
+  if (!state->threaded)
+    {
+      if (state->fileline_fn == NULL || state->fileline_fn == coff_nodebug)
+	*fileline_fn = coff_fileline_fn;
+    }
+  else
+    {
+      fileline current_fn;
+
+      current_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+      if (current_fn == NULL || current_fn == coff_nodebug)
+	*fileline_fn = coff_fileline_fn;
+    }
+
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/posix.c b/fluent-bit/lib/libbacktrace-8602fda/posix.c
new file mode 100644
index 000000000..924631d2e
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/posix.c
@@ -0,0 +1,104 @@
+/* posix.c -- POSIX file I/O routines for the backtrace library.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+#ifndef O_CLOEXEC
+#define O_CLOEXEC 0
+#endif
+
+#ifndef FD_CLOEXEC
+#define FD_CLOEXEC 1
+#endif
+
+/* Open a file for reading.  */
+
+int
+backtrace_open (const char *filename, backtrace_error_callback error_callback,
+		void *data, int *does_not_exist)
+{
+  int descriptor;
+
+  if (does_not_exist != NULL)
+    *does_not_exist = 0;
+
+  descriptor = open (filename, (int) (O_RDONLY | O_BINARY | O_CLOEXEC));
+  if (descriptor < 0)
+    {
+      /* If DOES_NOT_EXIST is not NULL, then don't call ERROR_CALLBACK
+	 if the file does not exist.  We treat lacking permission to
+	 open the file as the file not existing; this case arises when
+	 running the libgo syscall package tests as root.  */
+      if (does_not_exist != NULL && (errno == ENOENT || errno == EACCES))
+	*does_not_exist = 1;
+      else
+	error_callback (data, filename, errno);
+      return -1;
+    }
+
+#ifdef HAVE_FCNTL
+  /* Set FD_CLOEXEC just in case the kernel does not support
+     O_CLOEXEC. It doesn't matter if this fails for some reason.
+     FIXME: At some point it should be safe to only do this if
+     O_CLOEXEC == 0.  */
+  fcntl (descriptor, F_SETFD, FD_CLOEXEC);
+#endif
+
+  return descriptor;
+}
+
+/* Close DESCRIPTOR.  */
+
+int
+backtrace_close (int descriptor, backtrace_error_callback error_callback,
+		 void *data)
+{
+  if (close (descriptor) < 0)
+    {
+      error_callback (data, "close", errno);
+      return 0;
+    }
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/print.c b/fluent-bit/lib/libbacktrace-8602fda/print.c
new file mode 100644
index 000000000..93d0d3abb
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/print.c
@@ -0,0 +1,92 @@
+/* print.c -- Print the current backtrace.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Passed to callbacks.  */
+
+struct print_data
+{
+  struct backtrace_state *state;
+  FILE *f;
+};
+
+/* Print one level of a backtrace.  */
+
+static int
+print_callback (void *data, uintptr_t pc, const char *filename, int lineno,
+		const char *function)
+{
+  struct print_data *pdata = (struct print_data *) data;
+
+  fprintf (pdata->f, "0x%lx %s\n\t%s:%d\n",
+	   (unsigned long) pc,
+	   function == NULL ? "???" : function,
+	   filename == NULL ? "???" : filename,
+	   lineno);
+  return 0;
+}
+
+/* Print errors to stderr.  */
+
+static void
+error_callback (void *data, const char *msg, int errnum)
+{
+  struct print_data *pdata = (struct print_data *) data;
+
+  if (pdata->state->filename != NULL)
+    fprintf (stderr, "%s: ", pdata->state->filename);
+  fprintf (stderr, "libbacktrace: %s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fputc ('\n', stderr);
+}
+
+/* Print a backtrace.  */
+
+void __attribute__((noinline))
+backtrace_print (struct backtrace_state *state, int skip, FILE *f)
+{
+  struct print_data data;
+
+  data.state = state;
+  data.f = f;
+  backtrace_full (state, skip + 1, print_callback, error_callback,
+		  (void *) &data);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/read.c b/fluent-bit/lib/libbacktrace-8602fda/read.c
new file mode 100644
index 000000000..1811c8d2e
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/read.c
@@ -0,0 +1,110 @@
+/* read.c -- File views without mmap.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* This file implements file views when mmap is not available.  */
+
+/* Create a view of SIZE bytes from DESCRIPTOR at OFFSET.  */
+
+int
+backtrace_get_view (struct backtrace_state *state, int descriptor,
+		    off_t offset, uint64_t size,
+		    backtrace_error_callback error_callback,
+		    void *data, struct backtrace_view *view)
+{
+  uint64_t got;
+  ssize_t r;
+
+  if ((uint64_t) (size_t) size != size)
+    {
+      error_callback (data, "file size too large", 0);
+      return 0;
+    }
+
+  if (lseek (descriptor, offset, SEEK_SET) < 0)
+    {
+      error_callback (data, "lseek", errno);
+      return 0;
+    }
+
+  view->base = backtrace_alloc (state, size, error_callback, data);
+  if (view->base == NULL)
+    return 0;
+  view->data = view->base;
+  view->len = size;
+
+  got = 0;
+  while (got < size)
+    {
+      r = read (descriptor, view->base, size - got);
+      if (r < 0)
+	{
+	  error_callback (data, "read", errno);
+	  free (view->base);
+	  return 0;
+	}
+      if (r == 0)
+	break;
+      got += (uint64_t) r;
+    }
+
+  if (got < size)
+    {
+      error_callback (data, "file too short", 0);
+      free (view->base);
+      return 0;
+    }
+
+  return 1;
+}
+
+/* Release a view read by backtrace_get_view.  */
+
+void
+backtrace_release_view (struct backtrace_state *state,
+			struct backtrace_view *view,
+			backtrace_error_callback error_callback,
+			void *data)
+{
+  backtrace_free (state, view->base, view->len, error_callback, data);
+  view->data = NULL;
+  view->base = NULL;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/simple.c b/fluent-bit/lib/libbacktrace-8602fda/simple.c
new file mode 100644
index 000000000..785e726e6
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/simple.c
@@ -0,0 +1,108 @@
+/* simple.c -- The backtrace_simple function.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include "unwind.h"
+#include "backtrace.h"
+
+/* The simple_backtrace routine.  */
+
+/* Data passed through _Unwind_Backtrace.  */
+
+struct backtrace_simple_data
+{
+  /* Number of frames to skip.  */
+  int skip;
+  /* Library state.  */
+  struct backtrace_state *state;
+  /* Callback routine.  */
+  backtrace_simple_callback callback;
+  /* Error callback routine.  */
+  backtrace_error_callback error_callback;
+  /* Data to pass to callback routine.  */
+  void *data;
+  /* Value to return from backtrace.  */
+  int ret;
+};
+
+/* Unwind library callback routine.  This is passed to
+   _Unwind_Backtrace.  */
+
+static _Unwind_Reason_Code
+simple_unwind (struct _Unwind_Context *context, void *vdata)
+{
+  struct backtrace_simple_data *bdata = (struct backtrace_simple_data *) vdata;
+  uintptr_t pc;
+  int ip_before_insn = 0;
+
+#ifdef HAVE_GETIPINFO
+  pc = _Unwind_GetIPInfo (context, &ip_before_insn);
+#else
+  pc = _Unwind_GetIP (context);
+#endif
+
+  if (bdata->skip > 0)
+    {
+      --bdata->skip;
+      return _URC_NO_REASON;
+    }
+
+  if (!ip_before_insn)
+    --pc;
+
+  bdata->ret = bdata->callback (bdata->data, pc);
+
+  if (bdata->ret != 0)
+    return _URC_END_OF_STACK;
+
+  return _URC_NO_REASON;
+}
+
+/* Get a simple stack backtrace.  */
+
+int __attribute__((noinline))
+backtrace_simple (struct backtrace_state *state, int skip,
+		  backtrace_simple_callback callback,
+		  backtrace_error_callback error_callback, void *data)
+{
+  struct backtrace_simple_data bdata;
+
+  bdata.skip = skip + 1;
+  bdata.state = state;
+  bdata.callback = callback;
+  bdata.error_callback = error_callback;
+  bdata.data = data;
+  bdata.ret = 0;
+  _Unwind_Backtrace (simple_unwind, &bdata);
+  return bdata.ret;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/sort.c b/fluent-bit/lib/libbacktrace-8602fda/sort.c
new file mode 100644
index 000000000..a60a980e6
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/sort.c
@@ -0,0 +1,108 @@
+/* sort.c -- Sort without allocating memory
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* The GNU glibc version of qsort allocates memory, which we must not
+   do if we are invoked by a signal handler.  So provide our own
+   sort.  */
+
+static void
+swap (char *a, char *b, size_t size)
+{
+  size_t i;
+
+  for (i = 0; i < size; i++, a++, b++)
+    {
+      char t;
+
+      t = *a;
+      *a = *b;
+      *b = t;
+    }
+}
+
+void
+backtrace_qsort (void *basearg, size_t count, size_t size,
+		 int (*compar) (const void *, const void *))
+{
+  char *base = (char *) basearg;
+  size_t i;
+  size_t mid;
+
+ tail_recurse:
+  if (count < 2)
+    return;
+
+  /* The symbol table and DWARF tables, which is all we use this
+     routine for, tend to be roughly sorted.  Pick the middle element
+     in the array as our pivot point, so that we are more likely to
+     cut the array in half for each recursion step.  */
+  swap (base, base + (count / 2) * size, size);
+
+  mid = 0;
+  for (i = 1; i < count; i++)
+    {
+      if ((*compar) (base, base + i * size) > 0)
+	{
+	  ++mid;
+	  if (i != mid)
+	    swap (base + mid * size, base + i * size, size);
+	}
+    }
+
+  if (mid > 0)
+    swap (base, base + mid * size, size);
+
+  /* Recurse with the smaller array, loop with the larger one.  That
+     ensures that our maximum stack depth is log count.  */
+  if (2 * mid < count)
+    {
+      backtrace_qsort (base, mid, size, compar);
+      base += (mid + 1) * size;
+      count -= mid + 1;
+      goto tail_recurse;
+    }
+  else
+    {
+      backtrace_qsort (base + (mid + 1) * size, count - (mid + 1),
+		       size, compar);
+      count = mid;
+      goto tail_recurse;
+    }
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/state.c b/fluent-bit/lib/libbacktrace-8602fda/state.c
new file mode 100644
index 000000000..0f368a239
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/state.c
@@ -0,0 +1,72 @@
+/* state.c -- Create the backtrace state.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+#include "internal.h"
+
+/* Create the backtrace state.  This will then be passed to all the
+   other routines.  */
+
+struct backtrace_state *
+backtrace_create_state (const char *filename, int threaded,
+			backtrace_error_callback error_callback,
+			void *data)
+{
+  struct backtrace_state init_state;
+  struct backtrace_state *state;
+
+#ifndef HAVE_SYNC_FUNCTIONS
+  if (threaded)
+    {
+      error_callback (data, "backtrace library does not support threads", 0);
+      return NULL;
+    }
+#endif
+
+  memset (&init_state, 0, sizeof init_state);
+  init_state.filename = filename;
+  init_state.threaded = threaded;
+
+  state = ((struct backtrace_state *)
+	   backtrace_alloc (&init_state, sizeof *state, error_callback, data));
+  if (state == NULL)
+    return NULL;
+  *state = init_state;
+
+  return state;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/stest.c b/fluent-bit/lib/libbacktrace-8602fda/stest.c
new file mode 100644
index 000000000..19a204de1
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/stest.c
@@ -0,0 +1,137 @@
+/* stest.c -- Test for libbacktrace internal sort function
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* Test the local qsort implementation.  */
+
+#define MAX 10
+
+struct test
+{
+  size_t count;
+  int input[MAX];
+  int output[MAX];
+};
+
+static struct test tests[] =
+  {
+    {
+      10,
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }
+    },
+    {
+      9,
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9 },
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9 }
+    },
+    {
+      10,
+      { 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 },
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
+    },
+    {
+      9,
+      { 9, 8, 7, 6, 5, 4, 3, 2, 1 },
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9 },
+    },
+    {
+      10,
+      { 2, 4, 6, 8, 10, 1, 3, 5, 7, 9 },
+      { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 },
+    },
+    {
+      5,
+      { 4, 5, 3, 1, 2 },
+      { 1, 2, 3, 4, 5 },
+    },
+    {
+      5,
+      { 1, 1, 1, 1, 1 },
+      { 1, 1, 1, 1, 1 },
+    },
+    {
+      5,
+      { 1, 1, 2, 1, 1 },
+      { 1, 1, 1, 1, 2 },
+    },
+    {
+      5,
+      { 2, 1, 1, 1, 1 },
+      { 1, 1, 1, 1, 2 },
+    },
+  };
+
+static int
+compare (const void *a, const void *b)
+{
+  const int *ai = (const int *) a;
+  const int *bi = (const int *) b;
+
+  return *ai - *bi;
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
+{
+  int failures;
+  size_t i;
+  int a[MAX];
+
+  failures = 0;
+  for (i = 0; i < sizeof tests / sizeof tests[0]; i++)
+    {
+      memcpy (a, tests[i].input, tests[i].count * sizeof (int));
+      backtrace_qsort (a, tests[i].count, sizeof (int), compare);
+      if (memcmp (a, tests[i].output, tests[i].count * sizeof (int)) != 0)
+	{
+	  size_t j;
+
+	  fprintf (stderr, "test %d failed:", (int) i);
+	  for (j = 0; j < tests[i].count; j++)
+	    fprintf (stderr, " %d", a[j]);
+	  fprintf (stderr, "\n");
+	  ++failures;
+	}
+    }
+
+  exit (failures > 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/test-driver b/fluent-bit/lib/libbacktrace-8602fda/test-driver
new file mode 100755
index 000000000..0218a01f6
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/test-driver
@@ -0,0 +1,148 @@
+#! /bin/sh
+# test-driver - basic testsuite driver script.
+
+scriptversion=2016-01-11.22; # UTC
+
+# Copyright (C) 2011-2017 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+# Make unconditional expansion of undefined variables an error.  This
+# helps a lot in preventing typo-related bugs.
+set -u
+
+usage_error ()
+{
+  echo "$0: $*" >&2
+  print_usage >&2
+  exit 2
+}
+
+print_usage ()
+{
+  cat <<END
+Usage:
+  test-driver --test-name=NAME --log-file=PATH --trs-file=PATH
+              [--expect-failure={yes|no}] [--color-tests={yes|no}]
+              [--enable-hard-errors={yes|no}] [--]
+              TEST-SCRIPT [TEST-SCRIPT-ARGUMENTS]
+The '--test-name', '--log-file' and '--trs-file' options are mandatory.
+END
+}
+
+test_name= # Used for reporting.
+log_file=  # Where to save the output of the test script.
+trs_file=  # Where to save the metadata of the test run.
+expect_failure=no
+color_tests=no
+enable_hard_errors=yes
+while test $# -gt 0; do
+  case $1 in
+  --help) print_usage; exit $?;;
+  --version) echo "test-driver $scriptversion"; exit $?;;
+  --test-name) test_name=$2; shift;;
+  --log-file) log_file=$2; shift;;
+  --trs-file) trs_file=$2; shift;;
+  --color-tests) color_tests=$2; shift;;
+  --expect-failure) expect_failure=$2; shift;;
+  --enable-hard-errors) enable_hard_errors=$2; shift;;
+  --) shift; break;;
+  -*) usage_error "invalid option: '$1'";;
+   *) break;;
+  esac
+  shift
+done
+
+missing_opts=
+test x"$test_name" = x && missing_opts="$missing_opts --test-name"
+test x"$log_file"  = x && missing_opts="$missing_opts --log-file"
+test x"$trs_file"  = x && missing_opts="$missing_opts --trs-file"
+if test x"$missing_opts" != x; then
+  usage_error "the following mandatory options are missing:$missing_opts"
+fi
+
+if test $# -eq 0; then
+  usage_error "missing argument"
+fi
+
+if test $color_tests = yes; then
+  # Keep this in sync with 'lib/am/check.am:$(am__tty_colors)'.
+  red='' # Red.
+  grn='' # Green.
+  lgn='' # Light green.
+  blu='' # Blue.
+  mgn='' # Magenta.
+  std=''     # No color.
+else
+  red= grn= lgn= blu= mgn= std=
+fi
+
+do_exit='rm -f $log_file $trs_file; (exit $st); exit $st'
+trap "st=129; $do_exit" 1
+trap "st=130; $do_exit" 2
+trap "st=141; $do_exit" 13
+trap "st=143; $do_exit" 15
+
+# Test script is run here.
+"$@" >$log_file 2>&1
+estatus=$?
+
+if test $enable_hard_errors = no && test $estatus -eq 99; then
+  tweaked_estatus=1
+else
+  tweaked_estatus=$estatus
+fi
+
+case $tweaked_estatus:$expect_failure in
+  0:yes) col=$red res=XPASS recheck=yes gcopy=yes;;
+  0:*)   col=$grn res=PASS  recheck=no  gcopy=no;;
+  77:*)  col=$blu res=SKIP  recheck=no  gcopy=yes;;
+  99:*)  col=$mgn res=ERROR recheck=yes gcopy=yes;;
+  *:yes) col=$lgn res=XFAIL recheck=no  gcopy=yes;;
+  *:*)   col=$red res=FAIL  recheck=yes gcopy=yes;;
+esac
+
+# Report the test outcome and exit status in the logs, so that one can
+# know whether the test passed or failed simply by looking at the '.log'
+# file, without the need of also peaking into the corresponding '.trs'
+# file (automake bug#11814).
+echo "$res $test_name (exit status: $estatus)" >>$log_file
+
+# Report outcome to console.
+echo "${col}${res}${std}: $test_name"
+
+# Register the test result, and other relevant metadata.
+echo ":test-result: $res" > $trs_file
+echo ":global-test-result: $res" >> $trs_file
+echo ":recheck: $recheck" >> $trs_file
+echo ":copy-in-global-log: $gcopy" >> $trs_file
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/fluent-bit/lib/libbacktrace-8602fda/test_format.c b/fluent-bit/lib/libbacktrace-8602fda/test_format.c
new file mode 100644
index 000000000..9deb6f5b2
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/test_format.c
@@ -0,0 +1,55 @@
+/* test_format.c -- Test for libbacktrace library
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* This program tests the externally visible interfaces of the
+   libbacktrace library.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/testlib.c b/fluent-bit/lib/libbacktrace-8602fda/testlib.c
new file mode 100644
index 000000000..3d24c19e7
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/testlib.c
@@ -0,0 +1,234 @@
+/* testlib.c -- test functions for libbacktrace library
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+
+#include "testlib.h"
+
+/* The backtrace state.  */
+
+void *state;
+
+/* The number of failures.  */
+
+int failures;
+
+/* Return the base name in a path.  */
+
+const char *
+base (const char *p)
+{
+  const char *last;
+  const char *s;
+
+  last = NULL;
+  for (s = p; *s != '\0'; ++s)
+    {
+      if (IS_DIR_SEPARATOR (*s))
+	last = s + 1;
+    }
+  return last != NULL ? last : p;
+}
+
+/* Check an entry in a struct info array.  */
+
+void
+check (const char *name, int index, const struct info *all, int want_lineno,
+       const char *want_function, const char *want_file, int *failed)
+{
+  if (*failed)
+    return;
+  if (all[index].filename == NULL || all[index].function == NULL)
+    {
+      fprintf (stderr, "%s: [%d]: missing file name or function name\n",
+	       name, index);
+      *failed = 1;
+      return;
+    }
+  if (strcmp (base (all[index].filename), want_file) != 0)
+    {
+      fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,
+	       all[index].filename, want_file);
+      *failed = 1;
+    }
+  if (all[index].lineno != want_lineno)
+    {
+      fprintf (stderr, "%s: [%d]: got %d expected %d\n", name, index,
+	       all[index].lineno, want_lineno);
+      *failed = 1;
+    }
+  if (strcmp (all[index].function, want_function) != 0)
+    {
+      fprintf (stderr, "%s: [%d]: got %s expected %s\n", name, index,
+	       all[index].function, want_function);
+      *failed = 1;
+    }
+}
+
+/* The backtrace callback function.  */
+
+int
+callback_one (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
+	      const char *filename, int lineno, const char *function)
+{
+  struct bdata *data = (struct bdata *) vdata;
+  struct info *p;
+
+  if (data->index >= data->max)
+    {
+      fprintf (stderr, "callback_one: callback called too many times\n");
+      data->failed = 1;
+      return 1;
+    }
+
+  p = &data->all[data->index];
+  if (filename == NULL)
+    p->filename = NULL;
+  else
+    {
+      p->filename = strdup (filename);
+      assert (p->filename != NULL);
+    }
+  p->lineno = lineno;
+  if (function == NULL)
+    p->function = NULL;
+  else
+    {
+      p->function = strdup (function);
+      assert (p->function != NULL);
+    }
+  ++data->index;
+
+  return 0;
+}
+
+/* An error callback passed to backtrace.  */
+
+void
+error_callback_one (void *vdata, const char *msg, int errnum)
+{
+  struct bdata *data = (struct bdata *) vdata;
+
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  data->failed = 1;
+}
+
+/* The backtrace_simple callback function.  */
+
+int
+callback_two (void *vdata, uintptr_t pc)
+{
+  struct sdata *data = (struct sdata *) vdata;
+
+  if (data->index >= data->max)
+    {
+      fprintf (stderr, "callback_two: callback called too many times\n");
+      data->failed = 1;
+      return 1;
+    }
+
+  data->addrs[data->index] = pc;
+  ++data->index;
+
+  return 0;
+}
+
+/* An error callback passed to backtrace_simple.  */
+
+void
+error_callback_two (void *vdata, const char *msg, int errnum)
+{
+  struct sdata *data = (struct sdata *) vdata;
+
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  data->failed = 1;
+}
+
+/* The backtrace_syminfo callback function.  */
+
+void
+callback_three (void *vdata, uintptr_t pc ATTRIBUTE_UNUSED,
+		const char *symname, uintptr_t symval,
+		uintptr_t symsize)
+{
+  struct symdata *data = (struct symdata *) vdata;
+
+  if (symname == NULL)
+    data->name = NULL;
+  else
+    {
+      data->name = strdup (symname);
+      assert (data->name != NULL);
+    }
+  data->val = symval;
+  data->size = symsize;
+}
+
+/* The backtrace_syminfo error callback function.  */
+
+void
+error_callback_three (void *vdata, const char *msg, int errnum)
+{
+  struct symdata *data = (struct symdata *) vdata;
+
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  data->failed = 1;
+}
+
+/* The backtrace_create_state error callback function.  */
+
+void
+error_callback_create (void *data ATTRIBUTE_UNUSED, const char *msg,
+                       int errnum)
+{
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  exit (EXIT_FAILURE);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/testlib.h b/fluent-bit/lib/libbacktrace-8602fda/testlib.h
new file mode 100644
index 000000000..29542a588
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/testlib.h
@@ -0,0 +1,110 @@
+/* testlib.h -- Header for test functions for libbacktrace library
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#ifndef LIBBACKTRACE_TESTLIB_H
+#define LIBBACKTRACE_TESTLIB_H
+
+/* Portable attribute syntax.  Actually some of these tests probably
+   won't work if the attributes are not recognized.  */
+
+#ifndef GCC_VERSION
+# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
+#endif
+
+#if (GCC_VERSION < 2007)
+# define __attribute__(x)
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+/* Used to collect backtrace info.  */
+
+struct info
+{
+  char *filename;
+  int lineno;
+  char *function;
+};
+
+/* Passed to backtrace callback function.  */
+
+struct bdata
+{
+  struct info *all;
+  size_t index;
+  size_t max;
+  int failed;
+};
+
+/* Passed to backtrace_simple callback function.  */
+
+struct sdata
+{
+  uintptr_t *addrs;
+  size_t index;
+  size_t max;
+  int failed;
+};
+
+/* Passed to backtrace_syminfo callback function.  */
+
+struct symdata
+{
+  const char *name;
+  uintptr_t val, size;
+  int failed;
+};
+
+/* The backtrace state.  */
+
+extern void *state;
+
+/* The number of failures.  */
+
+extern int failures;
+
+extern const char *base (const char *p);
+extern void check (const char *name, int index, const struct info *all,
+		   int want_lineno, const char *want_function,
+		   const char *want_file, int *failed);
+extern int callback_one (void *, uintptr_t, const char *, int, const char *);
+extern void error_callback_one (void *, const char *, int);
+extern int callback_two (void *, uintptr_t);
+extern void error_callback_two (void *, const char *, int);
+extern void callback_three (void *, uintptr_t, const char *, uintptr_t,
+			    uintptr_t);
+extern void error_callback_three (void *, const char *, int);
+extern void error_callback_create (void *, const char *, int);
+
+#endif /* !defined(LIBBACKTRACE_TESTLIB_H) */
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ttest.c b/fluent-bit/lib/libbacktrace-8602fda/ttest.c
new file mode 100644
index 000000000..3758b33f0
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ttest.c
@@ -0,0 +1,161 @@
+/* ttest.c -- Test for libbacktrace library
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+/* Test using the libbacktrace library from multiple threads.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <pthread.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+static int f2 (int) __attribute__ ((noinline));
+static int f3 (int, int) __attribute__ ((noinline));
+
+/* Test that a simple backtrace works.  This is called via
+   pthread_create.  It returns the number of failures, as void *.  */
+
+static void *
+test1_thread (void *arg ATTRIBUTE_UNUSED)
+{
+  /* Returning a value here and elsewhere avoids a tailcall which
+     would mess up the backtrace.  */
+  return (void *) (uintptr_t) (f2 (__LINE__) - 2);
+}
+
+static int
+f2 (int f1line)
+{
+  return f3 (f1line, __LINE__) + 2;
+}
+
+static int
+f3 (int f1line, int f2line)
+{
+  struct info all[20];
+  struct bdata data;
+  int f3line;
+  int i;
+
+  data.all = &all[0];
+  data.index = 0;
+  data.max = 20;
+  data.failed = 0;
+
+  f3line = __LINE__ + 1;
+  i = backtrace_full (state, 0, callback_one, error_callback_one, &data);
+
+  if (i != 0)
+    {
+      fprintf (stderr, "test1: unexpected return value %d\n", i);
+      data.failed = 1;
+    }
+
+  if (data.index < 3)
+    {
+      fprintf (stderr,
+	       "test1: not enough frames; got %zu, expected at least 3\n",
+	       data.index);
+      data.failed = 1;
+    }
+
+  check ("test1", 0, all, f3line, "f3", "ttest.c", &data.failed);
+  check ("test1", 1, all, f2line, "f2", "ttest.c", &data.failed);
+  check ("test1", 2, all, f1line, "test1_thread", "ttest.c", &data.failed);
+
+  return data.failed;
+}
+
+/* Run the test with 10 threads simultaneously.  */
+
+#define THREAD_COUNT 10
+
+static void test1 (void) __attribute__ ((unused));
+
+static void
+test1 (void)
+{
+  pthread_t atid[THREAD_COUNT];
+  int i;
+  int errnum;
+  int this_fail;
+  void *ret;
+
+  for (i = 0; i < THREAD_COUNT; i++)
+    {
+      errnum = pthread_create (&atid[i], NULL, test1_thread, NULL);
+      if (errnum != 0)
+	{
+	  fprintf (stderr, "pthread_create %d: %s\n", i, strerror (errnum));
+	  exit (EXIT_FAILURE);
+	}
+    }
+
+  this_fail = 0;
+  for (i = 0; i < THREAD_COUNT; i++)
+    {
+      errnum = pthread_join (atid[i], &ret);
+      if (errnum != 0)
+	{
+	  fprintf (stderr, "pthread_join %d: %s\n", i, strerror (errnum));
+	  exit (EXIT_FAILURE);
+	}
+      this_fail += (int) (uintptr_t) ret;
+    }
+
+  printf ("%s: threaded backtrace_full noinline\n", this_fail > 0 ? "FAIL" : "PASS");
+
+  failures += this_fail;
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+#if BACKTRACE_SUPPORTED
+#if BACKTRACE_SUPPORTS_THREADS
+  test1 ();
+#endif
+#endif
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/unittest.c b/fluent-bit/lib/libbacktrace-8602fda/unittest.c
new file mode 100644
index 000000000..3c8562304
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/unittest.c
@@ -0,0 +1,92 @@
+/* unittest.c -- Test for libbacktrace library
+   Copyright (C) 2018-2021 Free Software Foundation, Inc.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "filenames.h"
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "testlib.h"
+
+#include "internal.h"
+
+static unsigned count;
+
+static void
+error_callback (void *vdata ATTRIBUTE_UNUSED, const char *msg ATTRIBUTE_UNUSED,
+		int errnum ATTRIBUTE_UNUSED)
+{
+  ++count;
+}
+
+static int
+test1 (void)
+{
+  int res;
+  int failed;
+
+  struct backtrace_vector vec;
+
+  memset (&vec, 0, sizeof vec);
+
+  backtrace_vector_grow (state, 100, error_callback, NULL, &vec);
+  vec.alc += vec.size;
+  vec.size = 0;
+
+  count = 0;
+  res = backtrace_vector_release (state, &vec, error_callback, NULL);
+  failed = res != 1 || count != 0 || vec.base != NULL;
+
+  printf ("%s: unittest backtrace_vector_release size == 0\n",
+	  failed ? "FAIL": "PASS");
+
+  if (failed)
+    ++failures;
+
+  return failures;
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+  test1 ();
+
+  exit (failures ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/unknown.c b/fluent-bit/lib/libbacktrace-8602fda/unknown.c
new file mode 100644
index 000000000..a62cbf11e
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/unknown.c
@@ -0,0 +1,65 @@
+/* unknown.c -- used when backtrace configury does not know file format.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <sys/types.h>
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* A trivial routine that always fails to find fileline data.  */
+
+static int
+unknown_fileline (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		  uintptr_t pc, backtrace_full_callback callback,
+		  backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+		  void *data)
+
+{
+  return callback (data, pc, NULL, 0, NULL);
+}
+
+/* Initialize the backtrace data when we don't know how to read the
+   debug info.  */
+
+int
+backtrace_initialize (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		      const char *filename ATTRIBUTE_UNUSED,
+		      int descriptor ATTRIBUTE_UNUSED,
+		      backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+		      void *data ATTRIBUTE_UNUSED, fileline *fileline_fn)
+{
+  state->fileline_data = NULL;
+  *fileline_fn = unknown_fileline;
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/xcoff.c b/fluent-bit/lib/libbacktrace-8602fda/xcoff.c
new file mode 100644
index 000000000..1e65c0055
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/xcoff.c
@@ -0,0 +1,1606 @@
+/* xcoff.c -- Get debug data from an XCOFF file for backtraces.
+   Copyright (C) 2012-2021 Free Software Foundation, Inc.
+   Adapted from elf.c.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+
+#ifdef HAVE_LOADQUERY
+#include <sys/ldr.h>
+#endif
+
+#include "backtrace.h"
+#include "internal.h"
+
+/* The configure script must tell us whether we are 32-bit or 64-bit
+   XCOFF.  We could make this code test and support either possibility,
+   but there is no point.  This code only works for the currently
+   running executable, which means that we know the XCOFF mode at
+   configure time.  */
+
+#if BACKTRACE_XCOFF_SIZE != 32 && BACKTRACE_XCOFF_SIZE != 64
+#error "Unknown BACKTRACE_XCOFF_SIZE"
+#endif
+
+/* XCOFF file header.  */
+
+#if BACKTRACE_XCOFF_SIZE == 32
+
+typedef struct {
+  uint16_t f_magic;
+  uint16_t f_nscns;
+  uint32_t f_timdat;
+  uint32_t f_symptr;
+  uint32_t f_nsyms;
+  uint16_t f_opthdr;
+  uint16_t f_flags;
+} b_xcoff_filhdr;
+
+#define XCOFF_MAGIC	0737
+
+#else /* BACKTRACE_XCOFF_SIZE != 32 */
+
+typedef struct {
+  uint16_t f_magic;
+  uint16_t f_nscns;
+  uint32_t f_timdat;
+  uint64_t f_symptr;
+  uint16_t f_opthdr;
+  uint16_t f_flags;
+  uint32_t f_nsyms;
+} b_xcoff_filhdr;
+
+#define XCOFF_MAGIC	0767
+
+#endif /* BACKTRACE_XCOFF_SIZE != 32 */
+
+#define F_SHROBJ	0x2000	/* File is a shared object.  */
+
+/* XCOFF section header.  */
+
+#if BACKTRACE_XCOFF_SIZE == 32
+
+typedef struct {
+  char s_name[8];
+  uint32_t s_paddr;
+  uint32_t s_vaddr;
+  uint32_t s_size;
+  uint32_t s_scnptr;
+  uint32_t s_relptr;
+  uint32_t s_lnnoptr;
+  uint16_t s_nreloc;
+  uint16_t s_nlnno;
+  uint32_t s_flags;
+} b_xcoff_scnhdr;
+
+#define _OVERFLOW_MARKER	65535
+
+#else /* BACKTRACE_XCOFF_SIZE != 32 */
+
+typedef struct {
+  char name[8];
+  uint64_t s_paddr;
+  uint64_t s_vaddr;
+  uint64_t s_size;
+  uint64_t s_scnptr;
+  uint64_t s_relptr;
+  uint64_t s_lnnoptr;
+  uint32_t s_nreloc;
+  uint32_t s_nlnno;
+  uint32_t s_flags;
+} b_xcoff_scnhdr;
+
+#endif /* BACKTRACE_XCOFF_SIZE != 32 */
+
+#define STYP_DWARF	0x10	/* DWARF debugging section.  */
+#define STYP_TEXT	0x20	/* Executable text (code) section.  */
+#define STYP_OVRFLO	0x8000	/* Line-number field overflow section.  */
+
+#define SSUBTYP_DWINFO	0x10000	/* DWARF info section.  */
+#define SSUBTYP_DWLINE	0x20000	/* DWARF line-number section.  */
+#define SSUBTYP_DWARNGE	0x50000	/* DWARF aranges section.  */
+#define SSUBTYP_DWABREV	0x60000	/* DWARF abbreviation section.  */
+#define SSUBTYP_DWSTR	0x70000	/* DWARF strings section.  */
+
+/* XCOFF symbol.  */
+
+#define SYMNMLEN	8
+
+#if BACKTRACE_XCOFF_SIZE == 32
+
+typedef struct {
+  union {
+    char _name[SYMNMLEN];
+    struct {
+      uint32_t _zeroes;
+      uint32_t _offset;
+    } _s;
+  } _u;
+#define n_name		_u._name
+#define n_zeroes	_u._s._zeroes
+#define n_offset_	_u._s._offset
+
+  uint32_t n_value;
+  int16_t  n_scnum;
+  uint16_t n_type;
+  uint8_t  n_sclass;
+  uint8_t  n_numaux;
+} __attribute__ ((packed)) b_xcoff_syment;
+
+#else /* BACKTRACE_XCOFF_SIZE != 32 */
+
+typedef struct {
+  uint64_t n_value;
+  uint32_t n_offset_;
+  int16_t  n_scnum;
+  uint16_t n_type;
+  uint8_t  n_sclass;
+  uint8_t  n_numaux;
+} __attribute__ ((packed)) b_xcoff_syment;
+
+#endif /* BACKTRACE_XCOFF_SIZE != 32 */
+
+#define SYMESZ	18
+
+#define C_EXT		2	/* External symbol.  */
+#define C_FCN		101	/* Beginning or end of function.  */
+#define C_FILE		103	/* Source file name.  */
+#define C_HIDEXT	107	/* Unnamed external symbol.  */
+#define C_BINCL		108	/* Beginning of include file.  */
+#define C_EINCL		109	/* End of include file.  */
+#define C_WEAKEXT	111	/* Weak external symbol.  */
+
+#define ISFCN(x)	((x) & 0x0020)
+
+/* XCOFF AUX entry.  */
+
+#define AUXESZ		18
+#define FILNMLEN	14
+
+typedef union {
+#if BACKTRACE_XCOFF_SIZE == 32
+  struct {
+    uint16_t pad;
+    uint16_t x_lnnohi;
+    uint16_t x_lnno;
+  } x_block;
+#else
+  struct {
+    uint32_t x_lnno;
+  } x_block;
+#endif
+  union {
+    char x_fname[FILNMLEN];
+    struct {
+      uint32_t x_zeroes;
+      uint32_t x_offset;
+      char     pad[FILNMLEN-8];
+      uint8_t  x_ftype;
+    } _x;
+  } x_file;
+#if BACKTRACE_XCOFF_SIZE == 32
+  struct {
+    uint32_t x_exptr;
+    uint32_t x_fsize;
+    uint32_t x_lnnoptr;
+    uint32_t x_endndx;
+  } x_fcn;
+#else
+  struct {
+    uint64_t x_lnnoptr;
+    uint32_t x_fsize;
+    uint32_t x_endndx;
+  } x_fcn;
+#endif
+  struct {
+    uint8_t pad[AUXESZ-1];
+    uint8_t x_auxtype;
+  } x_auxtype;
+} __attribute__ ((packed)) b_xcoff_auxent;
+
+/* XCOFF line number entry.  */
+
+#if BACKTRACE_XCOFF_SIZE == 32
+
+typedef struct {
+  union {
+    uint32_t l_symndx;
+    uint32_t l_paddr;
+  } l_addr;
+  uint16_t l_lnno;
+} b_xcoff_lineno;
+
+#define LINESZ	6
+
+#else /* BACKTRACE_XCOFF_SIZE != 32 */
+
+typedef struct {
+  union {
+    uint32_t l_symndx;
+    uint64_t l_paddr;
+  } l_addr;
+  uint32_t l_lnno;
+} b_xcoff_lineno;
+
+#define LINESZ	12
+
+#endif /* BACKTRACE_XCOFF_SIZE != 32 */
+
+#if BACKTRACE_XCOFF_SIZE == 32
+#define XCOFF_AIX_TEXTBASE	0x10000000u
+#else
+#define XCOFF_AIX_TEXTBASE	0x100000000ul
+#endif
+
+/* AIX big archive fixed-length header.  */
+
+#define AIAMAGBIG	"<bigaf>\n"
+
+typedef struct {
+  char fl_magic[8];	/* Archive magic string.  */
+  char fl_memoff[20];	/* Offset to member table.  */
+  char fl_gstoff[20];	/* Offset to global symbol table.  */
+  char fl_gst64off[20];	/* Offset to global symbol table for 64-bit objects.  */
+  char fl_fstmoff[20];	/* Offset to first archive member.  */
+  char fl_freeoff[20];	/* Offset to first member on free list.  */
+} b_ar_fl_hdr;
+
+/* AIX big archive file member header.  */
+
+typedef struct {
+  char ar_size[20];	/* File member size - decimal.  */
+  char ar_nxtmem[20];	/* Next member offset - decimal.  */
+  char ar_prvmem[20];	/* Previous member offset - decimal.  */
+  char ar_date[12];	/* File member date - decimal.  */
+  char ar_uid[12];	/* File member userid - decimal.  */
+  char ar_gid[12];	/* File member group id - decimal.  */
+  char ar_mode[12];	/* File member mode - octal.  */
+  char ar_namlen[4];	/* File member name length - decimal.  */
+  char ar_name[2];	/* Start of member name.  */
+} b_ar_hdr;
+
+
+/* Information we keep for an XCOFF symbol.  */
+
+struct xcoff_symbol
+{
+  /* The name of the symbol.  */
+  const char *name;
+  /* The address of the symbol.  */
+  uintptr_t address;
+  /* The size of the symbol.  */
+  size_t size;
+};
+
+/* Information to pass to xcoff_syminfo.  */
+
+struct xcoff_syminfo_data
+{
+  /* Symbols for the next module.  */
+  struct xcoff_syminfo_data *next;
+  /* The XCOFF symbols, sorted by address.  */
+  struct xcoff_symbol *symbols;
+  /* The number of symbols.  */
+  size_t count;
+};
+
+/* Information about an include file.  */
+
+struct xcoff_incl
+{
+  /* File name.  */
+  const char *filename;
+  /* Offset to first line number from the include file.  */
+  uintptr_t begin;
+  /* Offset to last line number from the include file.  */
+  uintptr_t end;
+};
+
+/* A growable vector of include files information.  */
+
+struct xcoff_incl_vector
+{
+  /* Memory.  This is an array of struct xcoff_incl.  */
+  struct backtrace_vector vec;
+  /* Number of include files.  */
+  size_t count;
+};
+
+/* A growable vector of functions information.  */
+
+struct xcoff_func
+{
+  /* PC.  */
+  uintptr_t pc;
+  /* The size of the function.  */
+  size_t size;
+  /* Function name.  */
+  const char *name;
+  /* File name.  */
+  const char *filename;
+  /* Pointer to first lnno entry.  */
+  uintptr_t lnnoptr;
+  /* Base address of containing section.  */
+  uintptr_t sect_base;
+  /* Starting source line number.  */
+  int lnno;
+};
+
+/* A growable vector of function information.  This is used while
+   reading the function symbols.  */
+
+struct xcoff_func_vector
+{
+  /* Memory.  This is an array of struct xcoff_func.  */
+  struct backtrace_vector vec;
+  /* Number of valid mappings.  */
+  size_t count;
+};
+
+/* The information we need to map a PC to a file and line.  */
+
+struct xcoff_fileline_data
+{
+  /* The data for the next file we know about.  */
+  struct xcoff_fileline_data *next;
+  /* Functions information.  */
+  struct xcoff_func_vector func_vec;
+  /* Include files information.  */
+  struct xcoff_incl_vector incl_vec;
+  /* Line numbers information.  */
+  const unsigned char *linenos;
+  size_t linenos_size;
+  uint64_t lnnoptr0;
+  /* Loader address.  */
+  uintptr_t base_address;
+};
+
+/* Information we gather for the DWARF sections we care about.  */
+
+struct dwsect_info
+{
+  /* Section file offset.  */
+  off_t offset;
+  /* Section size.  */
+  size_t size;
+  /* Section contents, after read from file.  */
+  const unsigned char *data;
+};
+
+/* A dummy callback function used when we can't find any debug info.  */
+
+static int
+xcoff_nodebug (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	       uintptr_t pc ATTRIBUTE_UNUSED,
+	       backtrace_full_callback callback ATTRIBUTE_UNUSED,
+	       backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no debug info in XCOFF executable", -1);
+  return 0;
+}
+
+/* A dummy callback function used when we can't find a symbol
+   table.  */
+
+static void
+xcoff_nosyms (struct backtrace_state *state ATTRIBUTE_UNUSED,
+	      uintptr_t addr ATTRIBUTE_UNUSED,
+	      backtrace_syminfo_callback callback ATTRIBUTE_UNUSED,
+	      backtrace_error_callback error_callback, void *data)
+{
+  error_callback (data, "no symbol table in XCOFF executable", -1);
+}
+
+/* Compare struct xcoff_symbol for qsort.  */
+
+static int
+xcoff_symbol_compare (const void *v1, const void *v2)
+{
+  const struct xcoff_symbol *e1 = (const struct xcoff_symbol *) v1;
+  const struct xcoff_symbol *e2 = (const struct xcoff_symbol *) v2;
+
+  if (e1->address < e2->address)
+    return -1;
+  else if (e1->address > e2->address)
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare an ADDR against an xcoff_symbol for bsearch.  */
+
+static int
+xcoff_symbol_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct xcoff_symbol *entry = (const struct xcoff_symbol *) ventry;
+  uintptr_t addr;
+
+  addr = *key;
+  if (addr < entry->address)
+    return -1;
+  else if ((entry->size == 0 && addr > entry->address)
+	   || (entry->size > 0 && addr >= entry->address + entry->size))
+    return 1;
+  else
+    return 0;
+}
+
+/* Add XDATA to the list in STATE.  */
+
+static void
+xcoff_add_syminfo_data (struct backtrace_state *state,
+			struct xcoff_syminfo_data *xdata)
+{
+  if (!state->threaded)
+    {
+      struct xcoff_syminfo_data **pp;
+
+      for (pp = (struct xcoff_syminfo_data **) (void *) &state->syminfo_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = xdata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct xcoff_syminfo_data **pp;
+
+	  pp = (struct xcoff_syminfo_data **) (void *) &state->syminfo_data;
+
+	  while (1)
+	    {
+	      struct xcoff_syminfo_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, xdata))
+	    break;
+	}
+    }
+}
+
+/* Return the symbol name and value for an ADDR.  */
+
+static void
+xcoff_syminfo (struct backtrace_state *state ATTRIBUTE_UNUSED, uintptr_t addr,
+	       backtrace_syminfo_callback callback,
+	       backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+	       void *data)
+{
+  struct xcoff_syminfo_data *edata;
+  struct xcoff_symbol *sym = NULL;
+  const char *name;
+
+  if (!state->threaded)
+    {
+      for (edata = (struct xcoff_syminfo_data *) state->syminfo_data;
+	   edata != NULL;
+	   edata = edata->next)
+	{
+	  sym = ((struct xcoff_symbol *)
+		 bsearch (&addr, edata->symbols, edata->count,
+			  sizeof (struct xcoff_symbol), xcoff_symbol_search));
+	  if (sym != NULL)
+	    break;
+	}
+    }
+  else
+    {
+      struct xcoff_syminfo_data **pp;
+
+      pp = (struct xcoff_syminfo_data **) (void *) &state->syminfo_data;
+      while (1)
+	{
+	  edata = backtrace_atomic_load_pointer (pp);
+	  if (edata == NULL)
+	    break;
+
+	  sym = ((struct xcoff_symbol *)
+		 bsearch (&addr, edata->symbols, edata->count,
+			  sizeof (struct xcoff_symbol), xcoff_symbol_search));
+	  if (sym != NULL)
+	    break;
+
+	  pp = &edata->next;
+	}
+    }
+
+  if (sym == NULL)
+    callback (data, addr, NULL, 0, 0);
+  else
+    {
+      name = sym->name;
+      /* AIX prepends a '.' to function entry points, remove it.  */
+      if (name && *name == '.')
+	++name;
+      callback (data, addr, name, sym->address, sym->size);
+    }
+}
+
+/* Return the name of an XCOFF symbol.  */
+
+static const char *
+xcoff_symname (const b_xcoff_syment *asym,
+	       const unsigned char *strtab, size_t strtab_size)
+{
+#if BACKTRACE_XCOFF_SIZE == 32
+  if (asym->n_zeroes != 0)
+    {
+      /* Make a copy as we will release the symtab view.  */
+      char name[SYMNMLEN+1];
+      strncpy (name, asym->n_name, SYMNMLEN);
+      name[SYMNMLEN] = '\0';
+      return strdup (name);
+    }
+#endif
+  if (asym->n_sclass & 0x80)
+    return NULL; /* .debug */
+  if (asym->n_offset_ >= strtab_size)
+    return NULL;
+  return (const char *) strtab + asym->n_offset_;
+}
+
+/* Initialize the symbol table info for xcoff_syminfo.  */
+
+static int
+xcoff_initialize_syminfo (struct backtrace_state *state,
+			  uintptr_t base_address,
+			  const b_xcoff_scnhdr *sects,
+			  const b_xcoff_syment *syms, size_t nsyms,
+			  const unsigned char *strtab, size_t strtab_size,
+			  backtrace_error_callback error_callback, void *data,
+			  struct xcoff_syminfo_data *sdata)
+{
+  size_t xcoff_symbol_count;
+  size_t xcoff_symbol_size;
+  struct xcoff_symbol *xcoff_symbols;
+  size_t i;
+  unsigned int j;
+
+  /* We only care about function symbols.  Count them.  */
+  xcoff_symbol_count = 0;
+  for (i = 0; i < nsyms; ++i)
+    {
+      const b_xcoff_syment *asym = &syms[i];
+      if ((asym->n_sclass == C_EXT || asym->n_sclass == C_HIDEXT
+	    || asym->n_sclass == C_WEAKEXT)
+	  && ISFCN (asym->n_type) && asym->n_numaux > 0 && asym->n_scnum > 0)
+	++xcoff_symbol_count;
+
+      i += asym->n_numaux;
+    }
+
+  xcoff_symbol_size = xcoff_symbol_count * sizeof (struct xcoff_symbol);
+  xcoff_symbols = ((struct xcoff_symbol *)
+		   backtrace_alloc (state, xcoff_symbol_size, error_callback,
+				    data));
+  if (xcoff_symbols == NULL)
+    return 0;
+
+  j = 0;
+  for (i = 0; i < nsyms; ++i)
+    {
+      const b_xcoff_syment *asym = &syms[i];
+      if ((asym->n_sclass == C_EXT || asym->n_sclass == C_HIDEXT
+	    || asym->n_sclass == C_WEAKEXT)
+	  && ISFCN (asym->n_type) && asym->n_numaux > 0 && asym->n_scnum > 0)
+	{
+	  const b_xcoff_auxent *aux = (const b_xcoff_auxent *) (asym + 1);
+	  xcoff_symbols[j].name = xcoff_symname (asym, strtab, strtab_size);
+	  xcoff_symbols[j].address = base_address + asym->n_value
+				   - sects[asym->n_scnum - 1].s_paddr;
+	  /* x_fsize will be 0 if there is no debug information.  */
+	  xcoff_symbols[j].size = aux->x_fcn.x_fsize;
+	  ++j;
+	}
+
+      i += asym->n_numaux;
+    }
+
+  backtrace_qsort (xcoff_symbols, xcoff_symbol_count,
+		   sizeof (struct xcoff_symbol), xcoff_symbol_compare);
+
+  sdata->next = NULL;
+  sdata->symbols = xcoff_symbols;
+  sdata->count = xcoff_symbol_count;
+
+  return 1;
+}
+
+/* Compare struct xcoff_func for qsort.  */
+
+static int
+xcoff_func_compare (const void *v1, const void *v2)
+{
+  const struct xcoff_func *fn1 = (const struct xcoff_func *) v1;
+  const struct xcoff_func *fn2 = (const struct xcoff_func *) v2;
+
+  if (fn1->pc < fn2->pc)
+    return -1;
+  else if (fn1->pc > fn2->pc)
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare a PC against an xcoff_func for bsearch.  */
+
+static int
+xcoff_func_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct xcoff_func *entry = (const struct xcoff_func *) ventry;
+  uintptr_t pc;
+
+  pc = *key;
+  if (pc < entry->pc)
+    return -1;
+  else if ((entry->size == 0 && pc > entry->pc)
+	   || (entry->size > 0 && pc >= entry->pc + entry->size))
+    return 1;
+  else
+    return 0;
+}
+
+/* Compare struct xcoff_incl for qsort.  */
+
+static int
+xcoff_incl_compare (const void *v1, const void *v2)
+{
+  const struct xcoff_incl *in1 = (const struct xcoff_incl *) v1;
+  const struct xcoff_incl *in2 = (const struct xcoff_incl *) v2;
+
+  if (in1->begin < in2->begin)
+    return -1;
+  else if (in1->begin > in2->begin)
+    return 1;
+  else
+    return 0;
+}
+
+/* Find a lnnoptr in an include file.  */
+
+static int
+xcoff_incl_search (const void *vkey, const void *ventry)
+{
+  const uintptr_t *key = (const uintptr_t *) vkey;
+  const struct xcoff_incl *entry = (const struct xcoff_incl *) ventry;
+  uintptr_t lnno;
+
+  lnno = *key;
+  if (lnno < entry->begin)
+    return -1;
+  else if (lnno > entry->end)
+    return 1;
+  else
+    return 0;
+}
+
+/* Look for a PC in the function vector for one module.  On success,
+   call CALLBACK and return whatever it returns.  On error, call
+   ERROR_CALLBACK and return 0.  Sets *FOUND to 1 if the PC is found,
+   0 if not.  */
+
+static int
+xcoff_lookup_pc (struct backtrace_state *state ATTRIBUTE_UNUSED,
+		 struct xcoff_fileline_data *fdata, uintptr_t pc,
+		 backtrace_full_callback callback,
+		 backtrace_error_callback error_callback ATTRIBUTE_UNUSED,
+		 void *data, int *found)
+{
+  const struct xcoff_incl *incl, *bincl;
+  const struct xcoff_func *fn;
+  const b_xcoff_lineno *lineno;
+  const unsigned char *lineptr;
+  const char *function;
+  const char *filename;
+  uintptr_t lnnoptr, match;
+  uint32_t lnno = 0;
+
+  *found = 1;
+
+  if ((pc & 3) != 0)
+    ++pc;
+
+  /* Find the function first.  */
+  fn = ((struct xcoff_func *)
+	bsearch (&pc, fdata->func_vec.vec.base, fdata->func_vec.count,
+		 sizeof (struct xcoff_func), xcoff_func_search));
+  if (fn == NULL)
+    {
+      *found = 0;
+      return 0;
+    }
+
+  filename = fn->filename;
+
+  /* Find the line number next.  */
+
+  /* Skip first entry that points to symtab.  */
+  lnnoptr = fn->lnnoptr + LINESZ;
+  match = lnnoptr;
+
+  lineptr = fdata->linenos + (lnnoptr - fdata->lnnoptr0);
+  while (lineptr + LINESZ <= fdata->linenos + fdata->linenos_size)
+    {
+      lineno = (const b_xcoff_lineno *) lineptr;
+      if (lineno->l_lnno == 0)
+	break;
+      if (pc <= fdata->base_address + lineno->l_addr.l_paddr - fn->sect_base)
+	break;
+      match = lnnoptr;
+      lnno = lineno->l_lnno;
+
+      lnnoptr += LINESZ;
+      lineptr += LINESZ;
+    }
+
+  /* If part of a function other than the beginning comes from an
+     include file, the line numbers are absolute, rather than
+     relative to the beginning of the function.  */
+  incl = ((struct xcoff_incl *)
+	  bsearch (&match, fdata->incl_vec.vec.base,
+		   fdata->incl_vec.count, sizeof (struct xcoff_incl),
+		   xcoff_incl_search));
+  if (incl != NULL)
+    {
+      bincl = ((struct xcoff_incl *)
+	       bsearch (&fn->lnnoptr, fdata->incl_vec.vec.base,
+			fdata->incl_vec.count, sizeof (struct xcoff_incl),
+			xcoff_incl_search));
+      if (bincl != NULL && strcmp (incl->filename, bincl->filename) == 0)
+	{
+	  lnno += fn->lnno - 1;
+	}
+      filename = incl->filename;
+    }
+  else
+    {
+      lnno += fn->lnno - 1;
+    }
+
+  function = fn->name;
+  /* AIX prepends a '.' to function entry points, remove it.  */
+  if (function != NULL && *function == '.')
+    ++function;
+  return callback (data, pc, filename, lnno, function);
+}
+
+/* Return the file/line information for a PC using the XCOFF lineno
+   mapping we built earlier.  */
+
+static int
+xcoff_fileline (struct backtrace_state *state, uintptr_t pc,
+		backtrace_full_callback callback,
+		backtrace_error_callback error_callback, void *data)
+
+{
+  struct xcoff_fileline_data *fdata;
+  int found;
+  int ret;
+
+  if (!state->threaded)
+    {
+      for (fdata = (struct xcoff_fileline_data *) state->fileline_data;
+	   fdata != NULL;
+	   fdata = fdata->next)
+	{
+	  ret = xcoff_lookup_pc (state, fdata, pc, callback, error_callback,
+				 data, &found);
+	  if (ret != 0 || found)
+	    return ret;
+	}
+    }
+  else
+    {
+      struct xcoff_fileline_data **pp;
+
+      pp = (struct xcoff_fileline_data **) (void *) &state->fileline_data;
+      while (1)
+	{
+	  fdata = backtrace_atomic_load_pointer (pp);
+	  if (fdata == NULL)
+	    break;
+
+	  ret = xcoff_lookup_pc (state, fdata, pc, callback, error_callback,
+				 data, &found);
+	  if (ret != 0 || found)
+	    return ret;
+
+	  pp = &fdata->next;
+	}
+    }
+
+  /* FIXME: See if any libraries have been dlopen'ed.  */
+
+  return callback (data, pc, NULL, 0, NULL);
+}
+
+/* Initialize the function vector info for xcoff_fileline.  */
+
+static int
+xcoff_initialize_fileline (struct backtrace_state *state,
+			   uintptr_t base_address,
+			   const b_xcoff_scnhdr *sects,
+			   const b_xcoff_syment *syms, size_t nsyms,
+			   const unsigned char *strtab, size_t strtab_size,
+			   const unsigned char *linenos, size_t linenos_size,
+			   uint64_t lnnoptr0,
+			   backtrace_error_callback error_callback, void *data)
+{
+  struct xcoff_fileline_data *fdata;
+  struct xcoff_func *fn;
+  const b_xcoff_syment *fsym;
+  const b_xcoff_auxent *aux;
+  const char *filename;
+  const char *name;
+  struct xcoff_incl *incl;
+  uintptr_t begin, end;
+  uintptr_t lnno, lnnoptr;
+  uint32_t fsize;
+  size_t i;
+
+  fdata = ((struct xcoff_fileline_data *)
+	   backtrace_alloc (state, sizeof (struct xcoff_fileline_data),
+			    error_callback, data));
+  if (fdata == NULL)
+    return 0;
+  memset (fdata, 0, sizeof *fdata);
+  fdata->base_address = base_address;
+  fdata->linenos = linenos;
+  fdata->linenos_size = linenos_size;
+  fdata->lnnoptr0 = lnnoptr0;
+
+  begin = 0;
+  filename = NULL;
+  fsym = NULL;
+  lnnoptr = 0;
+  fsize = 0;
+  for (i = 0; i < nsyms; ++i)
+    {
+      const b_xcoff_syment *asym = &syms[i];
+
+      switch (asym->n_sclass)
+	{
+	  case C_BINCL:
+	    begin = asym->n_value;
+	    break;
+
+	  case C_EINCL:
+	    if (begin == 0)
+	      break;
+	    end = asym->n_value;
+	    incl = ((struct xcoff_incl *)
+		    backtrace_vector_grow (state, sizeof (struct xcoff_incl),
+					   error_callback, data,
+					   &fdata->incl_vec.vec));
+	    if (incl != NULL)
+	      {
+		incl->filename = xcoff_symname (asym, strtab, strtab_size);
+		incl->begin = begin;
+		incl->end = end;
+		++fdata->incl_vec.count;
+	      }
+	    begin = 0;
+	    break;
+
+	  case C_FILE:
+	    filename = xcoff_symname (asym, strtab, strtab_size);
+	    if (filename == NULL)
+	      break;
+
+	    /* If the file auxiliary entry is not used, the symbol name is
+	       the name of the source file. If the file auxiliary entry is
+	       used, then the symbol name should be .file, and the first
+	       file auxiliary entry (by convention) contains the source
+	       file name.  */
+
+	    if (asym->n_numaux > 0 && strcmp (filename, ".file") == 0)
+	      {
+		aux = (const b_xcoff_auxent *) (asym + 1);
+		if (aux->x_file._x.x_zeroes != 0)
+		  {
+		    /* Make a copy as we will release the symtab view.  */
+		    char name[FILNMLEN+1];
+		    strncpy (name, aux->x_file.x_fname, FILNMLEN);
+		    name[FILNMLEN] = '\0';
+		    filename = strdup (name);
+		  }
+		else if (aux->x_file._x.x_offset < strtab_size)
+		  filename = (const char *) strtab + aux->x_file._x.x_offset;
+		else
+		  filename = NULL;
+	      }
+	    break;
+
+	  case C_EXT:
+	  case C_HIDEXT:
+	  case C_WEAKEXT:
+	    fsym = NULL;
+	    lnnoptr = 0;
+	    fsize = 0;
+	    if (!ISFCN (asym->n_type) || asym->n_numaux == 0
+		|| asym->n_scnum <= 0)
+	      break;
+	    if (filename == NULL)
+	      break;
+	    aux = (const b_xcoff_auxent *) (asym + 1);
+	    lnnoptr = aux->x_fcn.x_lnnoptr;
+	    if (lnnoptr < lnnoptr0
+		|| lnnoptr + LINESZ > lnnoptr0 + linenos_size)
+	      break;
+	    /* x_fsize will be 0 if there is no debug information.  */
+	    fsize = aux->x_fcn.x_fsize;
+	    fsym = asym;
+	    break;
+
+	  case C_FCN:
+	    if (asym->n_numaux == 0)
+	      break;
+	    if (fsym == NULL)
+	      break;
+	    name = xcoff_symname (asym, strtab, strtab_size);
+	    if (name == NULL || strcmp (name, ".bf") != 0)
+	      {
+		fsym = NULL;
+		break;
+	      }
+	    aux = (const b_xcoff_auxent *) (asym + 1);
+#if BACKTRACE_XCOFF_SIZE == 32
+	    lnno = (uint32_t) aux->x_block.x_lnnohi << 16
+		 | aux->x_block.x_lnno;
+#else
+	    lnno = aux->x_block.x_lnno;
+#endif
+	    fn = ((struct xcoff_func *)
+		  backtrace_vector_grow (state, sizeof (struct xcoff_func),
+					 error_callback, data,
+					 &fdata->func_vec.vec));
+	    if (fn == NULL)
+	      break;
+	    fn->name = xcoff_symname (fsym, strtab, strtab_size);
+	    fn->filename = filename;
+	    fn->sect_base = sects[fsym->n_scnum - 1].s_paddr;
+	    fn->pc = base_address + fsym->n_value - fn->sect_base;
+	    fn->size = fsize;
+	    fn->lnno = lnno;
+	    fn->lnnoptr = lnnoptr;
+	    ++fdata->func_vec.count;
+	    break;
+	}
+
+      i += asym->n_numaux;
+    }
+
+  if (!backtrace_vector_release (state, &fdata->func_vec.vec, error_callback,
+				 data))
+    goto fail;
+  backtrace_qsort (fdata->func_vec.vec.base, fdata->func_vec.count,
+		   sizeof (struct xcoff_func), xcoff_func_compare);
+
+  if (!backtrace_vector_release (state, &fdata->incl_vec.vec, error_callback,
+				 data))
+    goto fail;
+  backtrace_qsort (fdata->incl_vec.vec.base, fdata->incl_vec.count,
+		   sizeof (struct xcoff_incl), xcoff_incl_compare);
+
+  if (!state->threaded)
+    {
+      struct xcoff_fileline_data **pp;
+
+      for (pp = (struct xcoff_fileline_data **) (void *) &state->fileline_data;
+	   *pp != NULL;
+	   pp = &(*pp)->next)
+	;
+      *pp = fdata;
+    }
+  else
+    {
+      while (1)
+	{
+	  struct xcoff_fileline_data **pp;
+
+	  pp = (struct xcoff_fileline_data **) (void *) &state->fileline_data;
+
+	  while (1)
+	    {
+	      struct xcoff_fileline_data *p;
+
+	      p = backtrace_atomic_load_pointer (pp);
+
+	      if (p == NULL)
+		break;
+
+	      pp = &p->next;
+	    }
+
+	  if (__sync_bool_compare_and_swap (pp, NULL, fdata))
+	    break;
+	}
+    }
+
+  return 1;
+
+fail:
+  return 0;
+}
+
+/* Add the backtrace data for one XCOFF file.  Returns 1 on success,
+   0 on failure (in both cases descriptor is closed).  */
+
+static int
+xcoff_add (struct backtrace_state *state, int descriptor, off_t offset,
+	   uintptr_t base_address, backtrace_error_callback error_callback,
+	   void *data, fileline *fileline_fn, int *found_sym, int exe)
+{
+  struct backtrace_view fhdr_view;
+  struct backtrace_view sects_view;
+  struct backtrace_view linenos_view;
+  struct backtrace_view syms_view;
+  struct backtrace_view str_view;
+  struct backtrace_view dwarf_view;
+  b_xcoff_filhdr fhdr;
+  const b_xcoff_scnhdr *sects;
+  const b_xcoff_scnhdr *stext;
+  uint64_t lnnoptr;
+  uint32_t nlnno;
+  off_t str_off;
+  off_t min_offset;
+  off_t max_offset;
+  struct dwsect_info dwsect[DEBUG_MAX];
+  size_t sects_size;
+  size_t syms_size;
+  int32_t str_size;
+  int sects_view_valid;
+  int linenos_view_valid;
+  int syms_view_valid;
+  int str_view_valid;
+  int dwarf_view_valid;
+  int magic_ok;
+  int i;
+  struct dwarf_sections dwarf_sections;
+
+  *found_sym = 0;
+
+  sects_view_valid = 0;
+  linenos_view_valid = 0;
+  syms_view_valid = 0;
+  str_view_valid = 0;
+  dwarf_view_valid = 0;
+
+  str_size = 0;
+
+  /* Map the XCOFF file header.  */
+  if (!backtrace_get_view (state, descriptor, offset, sizeof (b_xcoff_filhdr),
+			   error_callback, data, &fhdr_view))
+    goto fail;
+
+  memcpy (&fhdr, fhdr_view.data, sizeof fhdr);
+  magic_ok = (fhdr.f_magic == XCOFF_MAGIC);
+
+  backtrace_release_view (state, &fhdr_view, error_callback, data);
+
+  if (!magic_ok)
+    {
+      if (exe)
+	error_callback (data, "executable file is not XCOFF", 0);
+      goto fail;
+    }
+
+  /* Verify object is of expected type.  */
+  if ((exe && (fhdr.f_flags & F_SHROBJ))
+      || (!exe && !(fhdr.f_flags & F_SHROBJ)))
+    goto fail;
+
+  /* Read the section headers.  */
+
+  sects_size = fhdr.f_nscns * sizeof (b_xcoff_scnhdr);
+
+  if (!backtrace_get_view (state, descriptor,
+			   offset + sizeof (fhdr) + fhdr.f_opthdr,
+			   sects_size, error_callback, data, &sects_view))
+    goto fail;
+  sects_view_valid = 1;
+  sects = (const b_xcoff_scnhdr *) sects_view.data;
+
+  /* FIXME: assumes only one .text section.  */
+  for (i = 0; i < fhdr.f_nscns; ++i)
+    if ((sects[i].s_flags & 0xffff) == STYP_TEXT)
+      break;
+  if (i == fhdr.f_nscns)
+    goto fail;
+
+  stext = &sects[i];
+
+  /* AIX ldinfo_textorg includes the XCOFF headers.  */
+  base_address = (exe ? XCOFF_AIX_TEXTBASE : base_address) + stext->s_scnptr;
+
+  lnnoptr = stext->s_lnnoptr;
+  nlnno = stext->s_nlnno;
+
+#if BACKTRACE_XCOFF_SIZE == 32
+  if (nlnno == _OVERFLOW_MARKER)
+    {
+      int sntext = i + 1;
+      /* Find the matching .ovrflo section.  */
+      for (i = 0; i < fhdr.f_nscns; ++i)
+	{
+	  if (((sects[i].s_flags & 0xffff) == STYP_OVRFLO)
+	      && sects[i].s_nlnno == sntext)
+	    {
+	      nlnno = sects[i].s_vaddr;
+	      break;
+	    }
+	}
+    }
+#endif
+
+  /* Read the symbol table and the string table.  */
+
+  if (fhdr.f_symptr != 0)
+    {
+      struct xcoff_syminfo_data *sdata;
+
+      /* Symbol table is followed by the string table.  The string table
+	 starts with its length (on 4 bytes).
+	 Map the symbol table and the length of the string table.  */
+      syms_size = fhdr.f_nsyms * sizeof (b_xcoff_syment);
+
+      if (!backtrace_get_view (state, descriptor, offset + fhdr.f_symptr,
+			       syms_size + 4, error_callback, data,
+			       &syms_view))
+	goto fail;
+      syms_view_valid = 1;
+
+      memcpy (&str_size, syms_view.data + syms_size, 4);
+
+      str_off = fhdr.f_symptr + syms_size;
+
+      if (str_size > 4)
+	{
+	  /* Map string table (including the length word).  */
+
+	  if (!backtrace_get_view (state, descriptor, offset + str_off,
+				   str_size, error_callback, data, &str_view))
+	    goto fail;
+	  str_view_valid = 1;
+	}
+
+      sdata = ((struct xcoff_syminfo_data *)
+	       backtrace_alloc (state, sizeof *sdata, error_callback, data));
+      if (sdata == NULL)
+	goto fail;
+
+      if (!xcoff_initialize_syminfo (state, base_address, sects,
+				     syms_view.data, fhdr.f_nsyms,
+				     str_view.data, str_size,
+				     error_callback, data, sdata))
+	{
+	  backtrace_free (state, sdata, sizeof *sdata, error_callback, data);
+	  goto fail;
+	}
+
+      *found_sym = 1;
+
+      xcoff_add_syminfo_data (state, sdata);
+    }
+
+  /* Read all the DWARF sections in a single view, since they are
+     probably adjacent in the file.  We never release this view.  */
+
+  min_offset = 0;
+  max_offset = 0;
+  memset (dwsect, 0, sizeof dwsect);
+  for (i = 0; i < fhdr.f_nscns; ++i)
+    {
+      off_t end;
+      int idx;
+
+      if ((sects[i].s_flags & 0xffff) != STYP_DWARF
+	  || sects[i].s_size == 0)
+	continue;
+      /* Map DWARF section to array index.  */
+      switch (sects[i].s_flags & 0xffff0000)
+	{
+	  case SSUBTYP_DWINFO:
+	    idx = DEBUG_INFO;
+	    break;
+	  case SSUBTYP_DWLINE:
+	    idx = DEBUG_LINE;
+	    break;
+	  case SSUBTYP_DWABREV:
+	    idx = DEBUG_ABBREV;
+	    break;
+	  case SSUBTYP_DWARNGE:
+	    idx = DEBUG_RANGES;
+	    break;
+	  case SSUBTYP_DWSTR:
+	    idx = DEBUG_STR;
+	    break;
+	  default:
+	    continue;
+	}
+      if (min_offset == 0 || (off_t) sects[i].s_scnptr < min_offset)
+	min_offset = sects[i].s_scnptr;
+      end = sects[i].s_scnptr + sects[i].s_size;
+      if (end > max_offset)
+	max_offset = end;
+      dwsect[idx].offset = sects[i].s_scnptr;
+      dwsect[idx].size = sects[i].s_size;
+    }
+  if (min_offset != 0 && max_offset != 0)
+    {
+      if (!backtrace_get_view (state, descriptor, offset + min_offset,
+			       max_offset - min_offset,
+			       error_callback, data, &dwarf_view))
+	goto fail;
+      dwarf_view_valid = 1;
+
+      for (i = 0; i < (int) DEBUG_MAX; ++i)
+	{
+	  if (dwsect[i].offset == 0)
+	    dwsect[i].data = NULL;
+	  else
+	    dwsect[i].data = ((const unsigned char *) dwarf_view.data
+			      + (dwsect[i].offset - min_offset));
+	}
+
+      memset (&dwarf_sections, 0, sizeof dwarf_sections);
+
+      dwarf_sections.data[DEBUG_INFO] = dwsect[DEBUG_INFO].data;
+      dwarf_sections.size[DEBUG_INFO] = dwsect[DEBUG_INFO].size;
+#if BACKTRACE_XCOFF_SIZE == 32
+      /* XXX workaround for broken lineoff */
+      dwarf_sections.data[DEBUG_LINE] = dwsect[DEBUG_LINE].data - 4;
+#else
+      /* XXX workaround for broken lineoff */
+      dwarf_sections.data[DEBUG_LINE] = dwsect[DEBUG_LINE].data - 12;
+#endif
+      dwarf_sections.size[DEBUG_LINE] = dwsect[DEBUG_LINE].size;
+      dwarf_sections.data[DEBUG_ABBREV] = dwsect[DEBUG_ABBREV].data;
+      dwarf_sections.size[DEBUG_ABBREV] = dwsect[DEBUG_ABBREV].size;
+      dwarf_sections.data[DEBUG_RANGES] = dwsect[DEBUG_RANGES].data;
+      dwarf_sections.size[DEBUG_RANGES] = dwsect[DEBUG_RANGES].size;
+      dwarf_sections.data[DEBUG_STR] = dwsect[DEBUG_STR].data;
+      dwarf_sections.size[DEBUG_STR] = dwsect[DEBUG_STR].size;
+
+      if (!backtrace_dwarf_add (state, 0, &dwarf_sections,
+				1, /* big endian */
+				NULL, /* altlink */
+				error_callback, data, fileline_fn,
+				NULL /* returned fileline_entry */))
+	goto fail;
+    }
+
+  /* Read the XCOFF line number entries if DWARF sections not found.  */
+
+  if (!dwarf_view_valid && fhdr.f_symptr != 0 && lnnoptr != 0)
+    {
+      size_t linenos_size = (size_t) nlnno * LINESZ;
+
+      /* We never release this view.  */
+      if (!backtrace_get_view (state, descriptor, offset + lnnoptr,
+			       linenos_size,
+			       error_callback, data, &linenos_view))
+	goto fail;
+      linenos_view_valid = 1;
+
+      if (xcoff_initialize_fileline (state, base_address, sects,
+				     syms_view.data, fhdr.f_nsyms,
+				     str_view.data, str_size,
+				     linenos_view.data, linenos_size,
+				     lnnoptr, error_callback, data))
+	*fileline_fn = xcoff_fileline;
+    }
+
+  backtrace_release_view (state, &sects_view, error_callback, data);
+  sects_view_valid = 0;
+  if (syms_view_valid)
+    backtrace_release_view (state, &syms_view, error_callback, data);
+  syms_view_valid = 0;
+
+  /* We've read all we need from the executable.  */
+  if (!backtrace_close (descriptor, error_callback, data))
+    goto fail;
+  descriptor = -1;
+
+  return 1;
+
+ fail:
+  if (sects_view_valid)
+    backtrace_release_view (state, &sects_view, error_callback, data);
+  if (str_view_valid)
+    backtrace_release_view (state, &str_view, error_callback, data);
+  if (syms_view_valid)
+    backtrace_release_view (state, &syms_view, error_callback, data);
+  if (linenos_view_valid)
+    backtrace_release_view (state, &linenos_view, error_callback, data);
+  if (dwarf_view_valid)
+    backtrace_release_view (state, &dwarf_view, error_callback, data);
+  if (descriptor != -1 && offset == 0)
+    backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+#ifdef HAVE_LOADQUERY
+
+/* Read an integer value in human-readable format from an AIX
+   big archive fixed-length or member header.  */
+
+static int
+xcoff_parse_decimal (const char *buf, size_t size, off_t *off)
+{
+  char str[32];
+  char *end;
+
+  if (size >= sizeof str)
+    return 0;
+  memcpy (str, buf, size);
+  str[size] = '\0';
+  *off = strtol (str, &end, 10);
+  if (*end != '\0' && *end != ' ')
+    return 0;
+
+  return 1;
+}
+
+/* Add the backtrace data for a member of an AIX big archive.
+   Returns 1 on success, 0 on failure.  */
+
+static int
+xcoff_armem_add (struct backtrace_state *state, int descriptor,
+		 uintptr_t base_address, const char *member,
+		 backtrace_error_callback error_callback, void *data,
+		 fileline *fileline_fn, int *found_sym)
+{
+  struct backtrace_view view;
+  b_ar_fl_hdr fl_hdr;
+  const b_ar_hdr *ar_hdr;
+  off_t off;
+  off_t len;
+  int memlen;
+
+  *found_sym = 0;
+
+  /* Map archive fixed-length header.  */
+
+  if (!backtrace_get_view (state, descriptor, 0, sizeof (b_ar_fl_hdr),
+			   error_callback, data, &view))
+    goto fail;
+
+  memcpy (&fl_hdr, view.data, sizeof (b_ar_fl_hdr));
+
+  backtrace_release_view (state, &view, error_callback, data);
+
+  if (memcmp (fl_hdr.fl_magic, AIAMAGBIG, 8) != 0)
+    goto fail;
+
+  memlen = strlen (member);
+
+  /* Read offset of first archive member.  */
+  if (!xcoff_parse_decimal (fl_hdr.fl_fstmoff, sizeof fl_hdr.fl_fstmoff, &off))
+    goto fail;
+  while (off != 0)
+    {
+      /* Map archive member header and member name.  */
+
+      if (!backtrace_get_view (state, descriptor, off,
+			       sizeof (b_ar_hdr) + memlen,
+			       error_callback, data, &view))
+	break;
+
+      ar_hdr = (const b_ar_hdr *) view.data;
+
+      /* Read archive member name length.  */
+      if (!xcoff_parse_decimal (ar_hdr->ar_namlen, sizeof ar_hdr->ar_namlen,
+				&len))
+	{
+	  backtrace_release_view (state, &view, error_callback, data);
+	  break;
+	}
+      if (len == memlen && !memcmp (ar_hdr->ar_name, member, memlen))
+	{
+	  off = (off + sizeof (b_ar_hdr) + memlen + 1) & ~1;
+
+	  /* The archive can contain several members with the same name
+	     (e.g. 32-bit and 64-bit), so continue if not ok.  */
+
+	  if (xcoff_add (state, descriptor, off, base_address, error_callback,
+			 data, fileline_fn, found_sym, 0))
+	    {
+	      backtrace_release_view (state, &view, error_callback, data);
+	      return 1;
+	    }
+	}
+
+      /* Read offset of next archive member.  */
+      if (!xcoff_parse_decimal (ar_hdr->ar_nxtmem, sizeof ar_hdr->ar_nxtmem,
+				&off))
+	{
+	  backtrace_release_view (state, &view, error_callback, data);
+	  break;
+	}
+      backtrace_release_view (state, &view, error_callback, data);
+    }
+
+ fail:
+  /* No matching member found.  */
+  backtrace_close (descriptor, error_callback, data);
+  return 0;
+}
+
+/* Add the backtrace data for dynamically loaded libraries.  */
+
+static void
+xcoff_add_shared_libs (struct backtrace_state *state,
+		       backtrace_error_callback error_callback,
+		       void *data, fileline *fileline_fn, int *found_sym)
+{
+  const struct ld_info *ldinfo;
+  void *buf;
+  unsigned int buflen;
+  const char *member;
+  int descriptor;
+  int does_not_exist;
+  int lib_found_sym;
+  int ret;
+
+  /* Retrieve the list of loaded libraries.  */
+
+  buf = NULL;
+  buflen = 512;
+  do
+    {
+      buf = realloc (buf, buflen);
+      if (buf == NULL)
+	{
+	  ret = -1;
+	  break;
+	}
+      ret = loadquery (L_GETINFO, buf, buflen);
+      if (ret == 0)
+	break;
+      buflen *= 2;
+    }
+  while (ret == -1 && errno == ENOMEM);
+  if (ret != 0)
+    {
+      free (buf);
+      return;
+    }
+
+  ldinfo = (const struct ld_info *) buf;
+  while ((const char *) ldinfo < (const char *) buf + buflen)
+    {
+      if (*ldinfo->ldinfo_filename != '/')
+	goto next;
+
+      descriptor = backtrace_open (ldinfo->ldinfo_filename, error_callback,
+				   data, &does_not_exist);
+      if (descriptor < 0)
+	goto next;
+
+      /* Check if it is an archive (member name not empty).  */
+
+      member = ldinfo->ldinfo_filename + strlen (ldinfo->ldinfo_filename) + 1;
+      if (*member)
+	{
+	  xcoff_armem_add (state, descriptor,
+			   (uintptr_t) ldinfo->ldinfo_textorg, member,
+			   error_callback, data, fileline_fn, &lib_found_sym);
+	}
+      else
+	{
+	  xcoff_add (state, descriptor, 0, (uintptr_t) ldinfo->ldinfo_textorg,
+		     error_callback, data, fileline_fn, &lib_found_sym, 0);
+	}
+      if (lib_found_sym)
+	*found_sym = 1;
+
+ next:
+      if (ldinfo->ldinfo_next == 0)
+	break;
+      ldinfo = (const struct ld_info *) ((const char *) ldinfo
+					 + ldinfo->ldinfo_next);
+    }
+
+    free (buf);
+}
+#endif /* HAVE_LOADQUERY */
+
+/* Initialize the backtrace data we need from an XCOFF executable.
+   Returns 1 on success, 0 on failure.  */
+
+int
+backtrace_initialize (struct backtrace_state *state,
+		      const char *filename ATTRIBUTE_UNUSED, int descriptor,
+		      backtrace_error_callback error_callback,
+		      void *data, fileline *fileline_fn)
+{
+  int ret;
+  int found_sym;
+  fileline xcoff_fileline_fn = xcoff_nodebug;
+
+  ret = xcoff_add (state, descriptor, 0, 0, error_callback, data,
+		   &xcoff_fileline_fn, &found_sym, 1);
+  if (!ret)
+    return 0;
+
+#ifdef HAVE_LOADQUERY
+  xcoff_add_shared_libs (state, error_callback, data, &xcoff_fileline_fn,
+			 &found_sym);
+#endif
+
+  if (!state->threaded)
+    {
+      if (found_sym)
+	state->syminfo_fn = xcoff_syminfo;
+      else if (state->syminfo_fn == NULL)
+	state->syminfo_fn = xcoff_nosyms;
+    }
+  else
+    {
+      if (found_sym)
+	backtrace_atomic_store_pointer (&state->syminfo_fn, xcoff_syminfo);
+      else
+	(void) __sync_bool_compare_and_swap (&state->syminfo_fn, NULL,
+					     xcoff_nosyms);
+    }
+
+  if (!state->threaded)
+    {
+      if (state->fileline_fn == NULL || state->fileline_fn == xcoff_nodebug)
+	*fileline_fn = xcoff_fileline_fn;
+    }
+  else
+    {
+      fileline current_fn;
+
+      current_fn = backtrace_atomic_load_pointer (&state->fileline_fn);
+      if (current_fn == NULL || current_fn == xcoff_nodebug)
+	*fileline_fn = xcoff_fileline_fn;
+    }
+
+  return 1;
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/xztest.c b/fluent-bit/lib/libbacktrace-8602fda/xztest.c
new file mode 100644
index 000000000..b2533cb18
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/xztest.c
@@ -0,0 +1,508 @@
+/* xztest.c -- Test for libbacktrace LZMA decoder.
+   Copyright (C) 2020-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_LIBLZMA
+#include <lzma.h>
+#endif
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "internal.h"
+#include "testlib.h"
+
+#ifndef HAVE_CLOCK_GETTIME
+
+typedef int xclockid_t;
+
+static int
+xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED,
+		struct timespec *ts ATTRIBUTE_UNUSED)
+{
+  errno = EINVAL;
+  return -1;
+}
+
+#define clockid_t xclockid_t
+#define clock_gettime xclock_gettime
+#undef CLOCK_REALTIME
+#define CLOCK_REALTIME 0
+
+#endif /* !defined(HAVE_CLOCK_GETTIME) */
+
+#ifdef CLOCK_PROCESS_CPUTIME_ID
+#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID
+#else
+#define LIBLZMA_CLOCK_GETTIME_ARG CLOCK_REALTIME
+#endif
+
+/* Some tests for the local lzma inflation code.  */
+
+struct lzma_test
+{
+  const char *name;
+  const char *uncompressed;
+  size_t uncompressed_len;
+  const char *compressed;
+  size_t compressed_len;
+};
+
+/* Error callback.  */
+
+static void
+error_callback_compress (void *vdata ATTRIBUTE_UNUSED, const char *msg,
+			 int errnum)
+{
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  exit (EXIT_FAILURE);
+}
+
+static const struct lzma_test tests[] =
+{
+  {
+    "empty",
+    "",
+    0,
+    ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x00\x00\x00\x00"
+     "\x1c\xdf\x44\x21\x1f\xb6\xf3\x7d\x01\x00\x00\x00\x00\x04\x59\x5a"),
+    32,
+  },
+  {
+    "hello",
+    "hello, world\n",
+    0,
+    ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01"
+     "\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0c\x68\x65\x6c\x6c\x6f"
+     "\x2c\x20\x77\x6f\x72\x6c\x64\x0a\x00\x00\x00\x00\x7b\x46\x5a\x81"
+     "\xc9\x12\xb8\xea\x00\x01\x25\x0d\x71\x19\xc4\xb6\x1f\xb6\xf3\x7d"
+     "\x01\x00\x00\x00\x00\x04\x59\x5a"),
+    72,
+  },
+  {
+    "goodbye",
+    "goodbye, world",
+    0,
+    ("\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01"
+     "\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x0d\x67\x6f\x6f\x64\x62"
+     "\x79\x65\x2c\x20\x77\x6f\x72\x6c\x64\x00\x00\x00\xf6\xf8\xa3\x33"
+     "\x8c\x4e\xc9\x68\x00\x01\x26\x0e\x08\x1b\xe0\x04\x1f\xb6\xf3\x7d"
+     "\x01\x00\x00\x00\x00\x04\x59\x5a"),
+    72,
+  },
+};
+
+/* Test the hand coded samples.  */
+
+static void
+test_samples (struct backtrace_state *state)
+{
+  size_t i;
+
+  for (i = 0; i < sizeof tests / sizeof tests[0]; ++i)
+    {
+      unsigned char *uncompressed;
+      size_t uncompressed_len;
+
+      uncompressed = NULL;
+      uncompressed_len = 0;
+      if (!backtrace_uncompress_lzma (state,
+				      ((const unsigned char *)
+				       tests[i].compressed),
+				      tests[i].compressed_len,
+				      error_callback_compress, NULL,
+				      &uncompressed, &uncompressed_len))
+	{
+	  fprintf (stderr, "test %s: uncompress failed\n", tests[i].name);
+	  ++failures;
+	}
+      else
+	{
+	  size_t v;
+
+	  v = tests[i].uncompressed_len;
+	  if (v == 0)
+	    v = strlen (tests[i].uncompressed);
+	  if (uncompressed_len != v)
+	    {
+	      fprintf (stderr,
+		       "test %s: got uncompressed length %zu, want %zu\n",
+		       tests[i].name, uncompressed_len, v);
+	      ++failures;
+	    }
+	  else if (memcmp (tests[i].uncompressed, uncompressed, v) != 0)
+	    {
+	      size_t j;
+
+	      fprintf (stderr, "test %s: uncompressed data mismatch\n",
+		       tests[i].name);
+	      for (j = 0; j < v; ++j)
+		if (tests[i].uncompressed[j] != uncompressed[j])
+		  fprintf (stderr, "  %zu: got %#x want %#x\n", j,
+			   uncompressed[j], tests[i].uncompressed[j]);
+	      ++failures;
+	    }
+	  else
+	    printf ("PASS: lzma %s\n", tests[i].name);
+
+	  backtrace_free (state, uncompressed, uncompressed_len,
+			  error_callback_compress, NULL);
+	}
+    }
+}
+
+#if HAVE_LIBLZMA
+
+/* Given a set of TRIALS timings, discard the lowest and highest
+   values and return the mean average of the rest.  */
+
+static size_t
+average_time (const size_t *times, size_t trials)
+{
+  size_t imax;
+  size_t max;
+  size_t imin;
+  size_t min;
+  size_t i;
+  size_t sum;
+
+  imin = 0;
+  imax = 0;
+  min = times[0];
+  max = times[0];
+  for (i = 1; i < trials; ++i)
+    {
+      if (times[i] < min)
+	{
+	  imin = i;
+	  min = times[i];
+	}
+      if (times[i] > max)
+	{
+	  imax = i;
+	  max = times[i];
+	}
+    }
+
+  sum = 0;
+  for (i = 0; i < trials; ++i)
+    {
+      if (i != imax && i != imin)
+	sum += times[i];
+    }
+  return sum / (trials - 2);
+}
+
+#endif
+
+/* Test a larger text, if available.  */
+
+static void
+test_large (struct backtrace_state *state ATTRIBUTE_UNUSED)
+{
+#if HAVE_LIBLZMA
+  unsigned char *orig_buf;
+  size_t orig_bufsize;
+  size_t i;
+  lzma_stream initial_stream = LZMA_STREAM_INIT;
+  lzma_stream stream;
+  unsigned char *compressed_buf;
+  size_t compressed_bufsize;
+  unsigned char *uncompressed_buf;
+  size_t uncompressed_bufsize;
+  unsigned char *spare_buf;
+  int r;
+  clockid_t cid;
+  struct timespec ts1;
+  struct timespec ts2;
+  size_t ctime;
+  size_t ztime;
+  const size_t trials = 16;
+  size_t ctimes[16];
+  size_t ztimes[16];
+  static const char * const names[] = {
+    "Isaac.Newton-Opticks.txt",
+    "../libgo/go/testdata/Isaac.Newton-Opticks.txt",
+  };
+
+  orig_buf = NULL;
+  orig_bufsize = 0;
+  uncompressed_buf = NULL;
+  compressed_buf = NULL;
+
+  for (i = 0; i < sizeof names / sizeof names[0]; ++i)
+    {
+      size_t len;
+      char *namebuf;
+      FILE *e;
+      struct stat st;
+      char *rbuf;
+      size_t got;
+
+      len = strlen (SRCDIR) + strlen (names[i]) + 2;
+      namebuf = malloc (len);
+      if (namebuf == NULL)
+	{
+	  perror ("malloc");
+	  goto fail;
+	}
+      snprintf (namebuf, len, "%s/%s", SRCDIR, names[i]);
+      e = fopen (namebuf, "r");
+      free (namebuf);
+      if (e == NULL)
+	continue;
+      if (fstat (fileno (e), &st) < 0)
+	{
+	  perror ("fstat");
+	  fclose (e);
+	  continue;
+	}
+      rbuf = malloc (st.st_size);
+      if (rbuf == NULL)
+	{
+	  perror ("malloc");
+	  goto fail;
+	}
+      got = fread (rbuf, 1, st.st_size, e);
+      fclose (e);
+      if (got > 0)
+	{
+	  orig_buf = (unsigned char *) rbuf;
+	  orig_bufsize = got;
+	  break;
+	}
+      free (rbuf);
+    }
+
+  if (orig_buf == NULL)
+    {
+      /* We couldn't find an input file.  */
+      printf ("UNSUPPORTED: lzma large\n");
+      return;
+    }
+
+  stream = initial_stream;
+  r =  lzma_easy_encoder (&stream, 6, LZMA_CHECK_CRC32);
+  if (r != LZMA_OK)
+    {
+      fprintf (stderr, "lzma_easy_encoder failed: %d\n", r);
+      goto fail;
+    }
+
+  compressed_bufsize = orig_bufsize + 100;
+  compressed_buf = malloc (compressed_bufsize);
+  if (compressed_buf == NULL)
+    {
+      perror ("malloc");
+      goto fail;
+    }
+
+  stream.next_in = orig_buf;
+  stream.avail_in = orig_bufsize;
+  stream.next_out = compressed_buf;
+  stream.avail_out = compressed_bufsize;
+
+  do
+    {
+      r = lzma_code (&stream, LZMA_FINISH);
+      if (r != LZMA_OK && r != LZMA_STREAM_END)
+	{
+	  fprintf (stderr, "lzma_code failed: %d\n", r);
+	  goto fail;
+	}
+    }
+  while (r != LZMA_STREAM_END);
+
+  compressed_bufsize = stream.total_out;
+
+  if (!backtrace_uncompress_lzma (state, (unsigned char *) compressed_buf,
+				  compressed_bufsize,
+				  error_callback_compress, NULL,
+				  &uncompressed_buf, &uncompressed_bufsize))
+    {
+      fprintf (stderr, "lzma large: backtrace_uncompress_lzma failed\n");
+      goto fail;
+    }
+
+  if (uncompressed_bufsize != orig_bufsize)
+    {
+      fprintf (stderr,
+	       "lzma large: got uncompressed length %zu, want %zu\n",
+	       uncompressed_bufsize, orig_bufsize);
+      goto fail;
+    }
+
+  if (memcmp (uncompressed_buf, orig_buf, uncompressed_bufsize) != 0)
+    {
+      fprintf (stderr, "lzma large: uncompressed data mismatch\n");
+      goto fail;
+    }
+
+  printf ("PASS: lzma large\n");
+
+  spare_buf = malloc (orig_bufsize);
+  if (spare_buf == NULL)
+    {
+      perror ("malloc");
+      goto fail;
+    }
+
+  for (i = 0; i < trials; ++i)
+    {
+      cid = LIBLZMA_CLOCK_GETTIME_ARG;
+      if (clock_gettime (cid, &ts1) < 0)
+	{
+	  if (errno == EINVAL)
+	    return;
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      if (!backtrace_uncompress_lzma (state,
+				      (unsigned char *) compressed_buf,
+				      compressed_bufsize,
+				      error_callback_compress, NULL,
+				      &uncompressed_buf,
+				      &uncompressed_bufsize))
+	{
+	  fprintf (stderr,
+		   ("lzma large: "
+		    "benchmark backtrace_uncompress_lzma failed\n"));
+	  return;
+	}
+
+      if (clock_gettime (cid, &ts2) < 0)
+	{
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      ctime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
+      ctime += ts2.tv_nsec - ts1.tv_nsec;
+      ctimes[i] = ctime;
+
+      stream = initial_stream;
+
+      r = lzma_auto_decoder (&stream, UINT64_MAX, 0);
+      if (r != LZMA_OK)
+	{
+	  fprintf (stderr, "lzma_stream_decoder failed: %d\n", r);
+	  goto fail;
+	}
+
+      stream.next_in = compressed_buf;
+      stream.avail_in = compressed_bufsize;
+      stream.next_out = spare_buf;
+      stream.avail_out = orig_bufsize;
+
+      if (clock_gettime (cid, &ts1) < 0)
+	{
+	  perror("clock_gettime");
+	  return;
+	}
+
+      do
+	{
+	  r = lzma_code (&stream, LZMA_FINISH);
+	  if (r != LZMA_OK && r != LZMA_STREAM_END)
+	    {
+	      fprintf (stderr, "lzma_code failed: %d\n", r);
+	      goto fail;
+	    }
+	}
+      while (r != LZMA_STREAM_END);
+
+      if (clock_gettime (cid, &ts2) < 0)
+	{
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      ztime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
+      ztime += ts2.tv_nsec - ts1.tv_nsec;
+      ztimes[i] = ztime;
+    }
+
+  /* Toss the highest and lowest times and average the rest.  */
+  ctime = average_time (ctimes, trials);
+  ztime = average_time (ztimes, trials);
+
+  printf ("backtrace: %zu ns\n", ctime);
+  printf ("liblzma  : %zu ns\n", ztime);
+  printf ("ratio    : %g\n", (double) ztime / (double) ctime);
+
+  return;
+
+ fail:
+  printf ("FAIL: lzma large\n");
+  ++failures;
+
+  if (orig_buf != NULL)
+    free (orig_buf);
+  if (compressed_buf != NULL)
+    free (compressed_buf);
+  if (uncompressed_buf != NULL)
+    free (uncompressed_buf);
+
+#else /* !HAVE_LIBLZMA */
+
+ printf ("UNSUPPORTED: lzma large\n");
+
+#endif /* !HAVE_LIBLZMA */
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  struct backtrace_state *state;
+
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+  test_samples (state);
+  test_large (state);
+
+  exit (failures != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}
diff --git a/fluent-bit/lib/libbacktrace-8602fda/ztest.c b/fluent-bit/lib/libbacktrace-8602fda/ztest.c
new file mode 100644
index 000000000..4e79c0951
--- /dev/null
+++ b/fluent-bit/lib/libbacktrace-8602fda/ztest.c
@@ -0,0 +1,541 @@
+/* ztest.c -- Test for libbacktrace inflate code.
+   Copyright (C) 2017-2021 Free Software Foundation, Inc.
+   Written by Ian Lance Taylor, Google.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    (1) Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+
+    (2) Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+
+    (3) The name of the author may not be used to
+    endorse or promote products derived from this software without
+    specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.  */
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif
+
+#include "backtrace.h"
+#include "backtrace-supported.h"
+
+#include "internal.h"
+#include "testlib.h"
+
+#ifndef HAVE_CLOCK_GETTIME
+
+typedef int xclockid_t;
+
+static int
+xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED,
+		struct timespec *ts ATTRIBUTE_UNUSED)
+{
+  errno = EINVAL;
+  return -1;
+}
+
+#define clockid_t xclockid_t
+#define clock_gettime xclock_gettime
+#undef CLOCK_REALTIME
+#define CLOCK_REALTIME 0
+
+#endif /* !defined(HAVE_CLOCK_GETTIME) */
+
+#ifdef CLOCK_PROCESS_CPUTIME_ID
+#define ZLIB_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID
+#else
+#define ZLIB_CLOCK_GETTIME_ARG CLOCK_REALTIME
+#endif
+
+/* Some tests for the local zlib inflation code.  */
+
+struct zlib_test
+{
+  const char *name;
+  const char *uncompressed;
+  size_t uncompressed_len;
+  const char *compressed;
+  size_t compressed_len;
+};
+
+/* Error callback.  */
+
+static void
+error_callback_compress (void *vdata ATTRIBUTE_UNUSED, const char *msg,
+			 int errnum)
+{
+  fprintf (stderr, "%s", msg);
+  if (errnum > 0)
+    fprintf (stderr, ": %s", strerror (errnum));
+  fprintf (stderr, "\n");
+  exit (EXIT_FAILURE);
+}
+
+static const struct zlib_test tests[] =
+{
+  {
+    "empty",
+    "",
+    0,
+    "\x78\x9c\x03\x00\x00\x00\x00\x01",
+    8,
+  },
+  {
+    "hello",
+    "hello, world\n",
+    0,
+    ("\x78\x9c\xca\x48\xcd\xc9\xc9\xd7\x51\x28\xcf"
+     "\x2f\xca\x49\xe1\x02\x04\x00\x00\xff\xff\x21\xe7\x04\x93"),
+    25,
+  },
+  {
+    "goodbye",
+    "goodbye, world",
+    0,
+    ("\x78\x9c\x4b\xcf\xcf\x4f\x49\xaa"
+     "\x4c\xd5\x51\x28\xcf\x2f\xca\x49"
+     "\x01\x00\x28\xa5\x05\x5e"),
+    22,
+  },
+  {
+    "ranges",
+    ("\xcc\x11\x00\x00\x00\x00\x00\x00\xd5\x13\x00\x00\x00\x00\x00\x00"
+     "\x1c\x14\x00\x00\x00\x00\x00\x00\x72\x14\x00\x00\x00\x00\x00\x00"
+     "\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\xfb\x12\x00\x00\x00\x00\x00\x00\x09\x13\x00\x00\x00\x00\x00\x00"
+     "\x0c\x13\x00\x00\x00\x00\x00\x00\xcb\x13\x00\x00\x00\x00\x00\x00"
+     "\x29\x14\x00\x00\x00\x00\x00\x00\x4e\x14\x00\x00\x00\x00\x00\x00"
+     "\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\xfb\x12\x00\x00\x00\x00\x00\x00\x09\x13\x00\x00\x00\x00\x00\x00"
+     "\x67\x13\x00\x00\x00\x00\x00\x00\xcb\x13\x00\x00\x00\x00\x00\x00"
+     "\x9d\x14\x00\x00\x00\x00\x00\x00\xd5\x14\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\x5f\x0b\x00\x00\x00\x00\x00\x00\x6c\x0b\x00\x00\x00\x00\x00\x00"
+     "\x7d\x0b\x00\x00\x00\x00\x00\x00\x7e\x0c\x00\x00\x00\x00\x00\x00"
+     "\x38\x0f\x00\x00\x00\x00\x00\x00\x5c\x0f\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\x83\x0c\x00\x00\x00\x00\x00\x00\xfa\x0c\x00\x00\x00\x00\x00\x00"
+     "\xfd\x0d\x00\x00\x00\x00\x00\x00\xef\x0e\x00\x00\x00\x00\x00\x00"
+     "\x14\x0f\x00\x00\x00\x00\x00\x00\x38\x0f\x00\x00\x00\x00\x00\x00"
+     "\x9f\x0f\x00\x00\x00\x00\x00\x00\xac\x0f\x00\x00\x00\x00\x00\x00"
+     "\xdb\x0f\x00\x00\x00\x00\x00\x00\xff\x0f\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\xfd\x0d\x00\x00\x00\x00\x00\x00\xd8\x0e\x00\x00\x00\x00\x00\x00"
+     "\x9f\x0f\x00\x00\x00\x00\x00\x00\xac\x0f\x00\x00\x00\x00\x00\x00"
+     "\xdb\x0f\x00\x00\x00\x00\x00\x00\xff\x0f\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\xfa\x0c\x00\x00\x00\x00\x00\x00\xea\x0d\x00\x00\x00\x00\x00\x00"
+     "\xef\x0e\x00\x00\x00\x00\x00\x00\x14\x0f\x00\x00\x00\x00\x00\x00"
+     "\x5c\x0f\x00\x00\x00\x00\x00\x00\x9f\x0f\x00\x00\x00\x00\x00\x00"
+     "\xac\x0f\x00\x00\x00\x00\x00\x00\xdb\x0f\x00\x00\x00\x00\x00\x00"
+     "\xff\x0f\x00\x00\x00\x00\x00\x00\x2c\x10\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\x60\x11\x00\x00\x00\x00\x00\x00\xd1\x16\x00\x00\x00\x00\x00\x00"
+     "\x40\x0b\x00\x00\x00\x00\x00\x00\x2c\x10\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\x7a\x00\x00\x00\x00\x00\x00\x00\xb6\x00\x00\x00\x00\x00\x00\x00"
+     "\x9f\x01\x00\x00\x00\x00\x00\x00\xa7\x01\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+     "\x7a\x00\x00\x00\x00\x00\x00\x00\xa9\x00\x00\x00\x00\x00\x00\x00"
+     "\x9f\x01\x00\x00\x00\x00\x00\x00\xa7\x01\x00\x00\x00\x00\x00\x00"
+     "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"),
+    672,
+    ("\x78\x9c\x3b\x23\xc8\x00\x06\x57\x85\x21\xb4\x8c\x08\x84\x2e\x82"
+     "\xd2\x73\xa1\xf4\x55\x28\x8d\x0e\x7e\x0b\x41\x68\x4e\xa8\x7e\x1e"
+     "\x28\x7d\x1a\x4a\x6b\x42\xf5\xf9\x91\x69\x5e\x3a\x9a\x79\x84\xf4"
+     "\xc7\x73\x43\xe8\x1c\x28\x5d\x0b\xa5\xeb\x78\x20\xb4\x05\x3f\x84"
+     "\x8e\xe1\xc7\xae\xbf\x19\xaa\xee\x17\x94\xfe\xcb\x0b\xa1\xdf\xf3"
+     "\x41\x68\x11\x7e\x54\x73\xe6\x43\xe9\x35\x50\xfa\x36\x94\xfe\x8f"
+     "\xc3\x7c\x98\x79\x37\xf8\xc8\xd3\x0f\x73\xd7\x2b\x1c\xee\x8a\x21"
+     "\xd2\x5d\x3a\x02\xd8\xcd\x4f\x80\xa6\x87\x8b\x62\x10\xda\x81\x1b"
+     "\xbf\xfa\x2a\x28\xbd\x0d\x4a\xcf\x67\x84\xd0\xcb\x19\xf1\xab\x5f"
+     "\x49\xa4\x7a\x00\x48\x97\x29\xd4"),
+    152,
+  }
+};
+
+/* Test the hand coded samples.  */
+
+static void
+test_samples (struct backtrace_state *state)
+{
+  size_t i;
+
+  for (i = 0; i < sizeof tests / sizeof tests[0]; ++i)
+    {
+      char *p;
+      size_t v;
+      size_t j;
+      unsigned char *uncompressed;
+      size_t uncompressed_len;
+
+      p = malloc (12 + tests[i].compressed_len);
+      memcpy (p, "ZLIB", 4);
+      v = tests[i].uncompressed_len;
+      if (v == 0)
+	v = strlen (tests[i].uncompressed);
+      for (j = 0; j < 8; ++j)
+	p[j + 4] = (v >> ((7 - j) * 8)) & 0xff;
+      memcpy (p + 12, tests[i].compressed, tests[i].compressed_len);
+      uncompressed = NULL;
+      uncompressed_len = 0;
+      if (!backtrace_uncompress_zdebug (state, (unsigned char *) p,
+					tests[i].compressed_len + 12,
+					error_callback_compress, NULL,
+					&uncompressed, &uncompressed_len))
+	{
+	  fprintf (stderr, "test %s: uncompress failed\n", tests[i].name);
+	  ++failures;
+	}
+      else
+	{
+	  if (uncompressed_len != v)
+	    {
+	      fprintf (stderr,
+		       "test %s: got uncompressed length %zu, want %zu\n",
+		       tests[i].name, uncompressed_len, v);
+	      ++failures;
+	    }
+	  else if (memcmp (tests[i].uncompressed, uncompressed, v) != 0)
+	    {
+	      size_t j;
+
+	      fprintf (stderr, "test %s: uncompressed data mismatch\n",
+		       tests[i].name);
+	      for (j = 0; j < v; ++j)
+		if (tests[i].uncompressed[j] != uncompressed[j])
+		  fprintf (stderr, "  %zu: got %#x want %#x\n", j,
+			   uncompressed[j], tests[i].uncompressed[j]);
+	      ++failures;
+	    }
+	  else
+	    printf ("PASS: inflate %s\n", tests[i].name);
+
+	  backtrace_free (state, uncompressed, uncompressed_len,
+			  error_callback_compress, NULL);
+	}
+    }
+}
+
+#ifdef HAVE_ZLIB
+
+/* Given a set of TRIALS timings, discard the lowest and highest
+   values and return the mean average of the rest.  */
+
+static size_t
+average_time (const size_t *times, size_t trials)
+{
+  size_t imax;
+  size_t max;
+  size_t imin;
+  size_t min;
+  size_t i;
+  size_t sum;
+
+  imin = 0;
+  imax = 0;
+  min = times[0];
+  max = times[0];
+  for (i = 1; i < trials; ++i)
+    {
+      if (times[i] < min)
+	{
+	  imin = i;
+	  min = times[i];
+	}
+      if (times[i] > max)
+	{
+	  imax = i;
+	  max = times[i];
+	}
+    }
+
+  sum = 0;
+  for (i = 0; i < trials; ++i)
+    {
+      if (i != imax && i != imin)
+	sum += times[i];
+    }
+  return sum / (trials - 2);
+}
+
+#endif
+
+/* Test a larger text, if available.  */
+
+static void
+test_large (struct backtrace_state *state ATTRIBUTE_UNUSED)
+{
+#ifdef HAVE_ZLIB
+  unsigned char *orig_buf;
+  size_t orig_bufsize;
+  size_t i;
+  char *compressed_buf;
+  size_t compressed_bufsize;
+  unsigned long compress_sizearg;
+  unsigned char *uncompressed_buf;
+  size_t uncompressed_bufsize;
+  int r;
+  clockid_t cid;
+  struct timespec ts1;
+  struct timespec ts2;
+  size_t ctime;
+  size_t ztime;
+  const size_t trials = 16;
+  size_t ctimes[16];
+  size_t ztimes[16];
+  static const char * const names[] = {
+    "Isaac.Newton-Opticks.txt",
+    "../libgo/go/testdata/Isaac.Newton-Opticks.txt",
+  };
+
+  orig_buf = NULL;
+  orig_bufsize = 0;
+  uncompressed_buf = NULL;
+  compressed_buf = NULL;
+
+  for (i = 0; i < sizeof names / sizeof names[0]; ++i)
+    {
+      size_t len;
+      char *namebuf;
+      FILE *e;
+      struct stat st;
+      char *rbuf;
+      size_t got;
+
+      len = strlen (SRCDIR) + strlen (names[i]) + 2;
+      namebuf = malloc (len);
+      if (namebuf == NULL)
+	{
+	  perror ("malloc");
+	  goto fail;
+	}
+      snprintf (namebuf, len, "%s/%s", SRCDIR, names[i]);
+      e = fopen (namebuf, "r");
+      free (namebuf);
+      if (e == NULL)
+	continue;
+      if (fstat (fileno (e), &st) < 0)
+	{
+	  perror ("fstat");
+	  fclose (e);
+	  continue;
+	}
+      rbuf = malloc (st.st_size);
+      if (rbuf == NULL)
+	{
+	  perror ("malloc");
+	  goto fail;
+	}
+      got = fread (rbuf, 1, st.st_size, e);
+      fclose (e);
+      if (got > 0)
+	{
+	  orig_buf = (unsigned char *) rbuf;
+	  orig_bufsize = got;
+	  break;
+	}
+      free (rbuf);
+    }
+
+  if (orig_buf == NULL)
+    {
+      /* We couldn't find an input file.  */
+      printf ("UNSUPPORTED: inflate large\n");
+      return;
+    }
+
+  compressed_bufsize = compressBound (orig_bufsize) + 12;
+  compressed_buf = malloc (compressed_bufsize);
+  if (compressed_buf == NULL)
+    {
+      perror ("malloc");
+      goto fail;
+    }
+
+  compress_sizearg = compressed_bufsize - 12;
+  r = compress ((unsigned char *) compressed_buf + 12, &compress_sizearg,
+		orig_buf, orig_bufsize);
+  if (r != Z_OK)
+    {
+      fprintf (stderr, "zlib compress failed: %d\n", r);
+      goto fail;
+    }
+
+  compressed_bufsize = compress_sizearg + 12;
+
+  /* Prepare the header that our library expects.  */
+  memcpy (compressed_buf, "ZLIB", 4);
+  for (i = 0; i < 8; ++i)
+    compressed_buf[i + 4] = (orig_bufsize >> ((7 - i) * 8)) & 0xff;
+
+  uncompressed_buf = malloc (orig_bufsize);
+  if (uncompressed_buf == NULL)
+    {
+      perror ("malloc");
+      goto fail;
+    }
+  uncompressed_bufsize = orig_bufsize;
+
+  if (!backtrace_uncompress_zdebug (state, (unsigned char *) compressed_buf,
+				    compressed_bufsize,
+				    error_callback_compress, NULL,
+				    &uncompressed_buf, &uncompressed_bufsize))
+    {
+      fprintf (stderr, "inflate large: backtrace_uncompress_zdebug failed\n");
+      goto fail;
+    }
+
+  if (uncompressed_bufsize != orig_bufsize)
+    {
+      fprintf (stderr,
+	       "inflate large: got uncompressed length %zu, want %zu\n",
+	       uncompressed_bufsize, orig_bufsize);
+      goto fail;
+    }
+
+  if (memcmp (uncompressed_buf, orig_buf, uncompressed_bufsize) != 0)
+    {
+      fprintf (stderr, "inflate large: uncompressed data mismatch\n");
+      goto fail;
+    }
+
+  printf ("PASS: inflate large\n");
+
+  for (i = 0; i < trials; ++i)
+    {
+      unsigned long uncompress_sizearg;
+
+      cid = ZLIB_CLOCK_GETTIME_ARG;
+      if (clock_gettime (cid, &ts1) < 0)
+	{
+	  if (errno == EINVAL)
+	    return;
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      if (!backtrace_uncompress_zdebug (state,
+					(unsigned char *) compressed_buf,
+					compressed_bufsize,
+					error_callback_compress, NULL,
+					&uncompressed_buf,
+					&uncompressed_bufsize))
+	{
+	  fprintf (stderr,
+		   ("inflate large: "
+		    "benchmark backtrace_uncompress_zdebug failed\n"));
+	  return;
+	}
+
+      if (clock_gettime (cid, &ts2) < 0)
+	{
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      ctime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
+      ctime += ts2.tv_nsec - ts1.tv_nsec;
+      ctimes[i] = ctime;
+
+      if (clock_gettime (cid, &ts1) < 0)
+	{
+	  perror("clock_gettime");
+	  return;
+	}
+
+      uncompress_sizearg = uncompressed_bufsize;
+      r = uncompress ((unsigned char *) uncompressed_buf, &uncompress_sizearg,
+		      (unsigned char *) compressed_buf + 12,
+		      compressed_bufsize - 12);
+
+      if (clock_gettime (cid, &ts2) < 0)
+	{
+	  perror ("clock_gettime");
+	  return;
+	}
+
+      if (r != Z_OK)
+	{
+	  fprintf (stderr,
+		   "inflate large: benchmark zlib uncompress failed: %d\n",
+		   r);
+	  return;
+	}
+
+      ztime = (ts2.tv_sec - ts1.tv_sec) * 1000000000;
+      ztime += ts2.tv_nsec - ts1.tv_nsec;
+      ztimes[i] = ztime;
+    }
+
+  /* Toss the highest and lowest times and average the rest.  */
+  ctime = average_time (ctimes, trials);
+  ztime = average_time (ztimes, trials);
+
+  printf ("backtrace: %zu ns\n", ctime);
+  printf ("zlib     : %zu ns\n", ztime);
+  printf ("ratio    : %g\n", (double) ztime / (double) ctime);
+
+  return;
+
+ fail:
+  printf ("FAIL: inflate large\n");
+  ++failures;
+
+  if (orig_buf != NULL)
+    free (orig_buf);
+  if (compressed_buf != NULL)
+    free (compressed_buf);
+  if (uncompressed_buf != NULL)
+    free (uncompressed_buf);
+
+#else /* !HAVE_ZLIB */
+
+ printf ("UNSUPPORTED: inflate large\n");
+
+#endif /* !HAVE_ZLIB */
+}
+
+int
+main (int argc ATTRIBUTE_UNUSED, char **argv)
+{
+  struct backtrace_state *state;
+
+  state = backtrace_create_state (argv[0], BACKTRACE_SUPPORTS_THREADS,
+				  error_callback_create, NULL);
+
+  test_samples (state);
+  test_large (state);
+
+  exit (failures != 0 ? EXIT_FAILURE : EXIT_SUCCESS);
+}