path: root/aclocal.m4

# generated automatically by aclocal 1.16.5 -*- Autoconf -*-

# Copyright (C) 1996-2021 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.

# 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.

m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
m4_ifndef([AC_AUTOCONF_VERSION],
  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.71],,
[m4_warning([this file was generated for autoconf 2.71.
You have another version of autoconf.  It may work, but is not guaranteed to.
If you have problems, you may need to regenerate the build system entirely.
To do so, use the procedure documented by the package, typically 'autoreconf'.])])

# ltdl.m4 - Configure ltdl for the target system. -*-Autoconf-*-
#
#   Copyright (C) 1999-2008, 2011-2019, 2021-2022 Free Software
#   Foundation, Inc.
#   Written by Thomas Tanner, 1999
#
# 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 21 LTDL_INIT

# LT_CONFIG_LTDL_DIR(DIRECTORY, [LTDL-MODE])
# ------------------------------------------
# DIRECTORY contains the libltdl sources.  It is okay to call this
# function multiple times, as long as the same DIRECTORY is always given.
AC_DEFUN([LT_CONFIG_LTDL_DIR],
[AC_BEFORE([$0], [LTDL_INIT])
_$0($*)
])# LT_CONFIG_LTDL_DIR

# We break this out into a separate macro, so that we can call it safely
# internally without being caught accidentally by the sed scan in libtoolize.
m4_defun([_LT_CONFIG_LTDL_DIR],
[dnl remove trailing slashes
m4_pushdef([_ARG_DIR], m4_bpatsubst([$1], [/*$]))
m4_case(_LTDL_DIR,
	[], [dnl only set lt_ltdl_dir if _ARG_DIR is not simply '.'
	     m4_if(_ARG_DIR, [.],
	             [],
		 [m4_define([_LTDL_DIR], _ARG_DIR)
	          _LT_SHELL_INIT([lt_ltdl_dir=']_ARG_DIR['])])],
    [m4_if(_ARG_DIR, _LTDL_DIR,
	    [],
	[m4_fatal([multiple libltdl directories: ']_LTDL_DIR[', ']_ARG_DIR['])])])
m4_popdef([_ARG_DIR])
])# _LT_CONFIG_LTDL_DIR

# Initialise:
m4_define([_LTDL_DIR], [])


# _LT_BUILD_PREFIX
# ----------------
# If Autoconf is new enough, expand to '$(top_build_prefix)', otherwise
# to '$(top_builddir)/'.
m4_define([_LT_BUILD_PREFIX],
[m4_ifdef([AC_AUTOCONF_VERSION],
   [m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]), [2.62]),
	  [-1], [m4_ifdef([_AC_HAVE_TOP_BUILD_PREFIX],
			  [$(top_build_prefix)],
			  [$(top_builddir)/])],
	  [$(top_build_prefix)])],
   [$(top_builddir)/])[]dnl
])


# LTDL_CONVENIENCE
# ----------------
# sets LIBLTDL to the link flags for the libltdl convenience library and
# LTDLINCL to the include flags for the libltdl header and adds
# --enable-ltdl-convenience to the configure arguments.  Note that
# AC_CONFIG_SUBDIRS is not called here.  LIBLTDL will be prefixed with
# '$(top_build_prefix)' if available, otherwise with '$(top_builddir)/',
# and LTDLINCL will be prefixed with '$(top_srcdir)/' (note the single
# quotes!).  If your package is not flat and you're not using automake,
# define top_build_prefix, top_builddir, and top_srcdir appropriately
# in your Makefiles.
AC_DEFUN([LTDL_CONVENIENCE],
[AC_BEFORE([$0], [LTDL_INIT])dnl
dnl Although the argument is deprecated and no longer documented,
dnl LTDL_CONVENIENCE used to take a DIRECTORY orgument, if we have one
dnl here make sure it is the same as any other declaration of libltdl's
dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
_$0()
])# LTDL_CONVENIENCE

# AC_LIBLTDL_CONVENIENCE accepted a directory argument in older libtools,
# now we have LT_CONFIG_LTDL_DIR:
AU_DEFUN([AC_LIBLTDL_CONVENIENCE],
[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
_LTDL_CONVENIENCE])

dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIBLTDL_CONVENIENCE], [])


# _LTDL_CONVENIENCE
# -----------------
# Code shared by LTDL_CONVENIENCE and LTDL_INIT([convenience]).
m4_defun([_LTDL_CONVENIENCE],
[case $enable_ltdl_convenience in
  no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;
  "") enable_ltdl_convenience=yes
      ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;
esac
LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdlc.la"
LTDLDEPS=$LIBLTDL
LTDLINCL='-I$(top_srcdir)'"${lt_ltdl_dir+/$lt_ltdl_dir}"

AC_SUBST([LIBLTDL])
AC_SUBST([LTDLDEPS])
AC_SUBST([LTDLINCL])

# For backwards non-gettext consistent compatibility...
INCLTDL=$LTDLINCL
AC_SUBST([INCLTDL])
])# _LTDL_CONVENIENCE


# LTDL_INSTALLABLE
# ----------------
# sets LIBLTDL to the link flags for the libltdl installable library
# and LTDLINCL to the include flags for the libltdl header and adds
# --enable-ltdl-install to the configure arguments.  Note that
# AC_CONFIG_SUBDIRS is not called from here.  If an installed libltdl
# is not found, LIBLTDL will be prefixed with '$(top_build_prefix)' if
# available, otherwise with '$(top_builddir)/', and LTDLINCL will be
# prefixed with '$(top_srcdir)/' (note the single quotes!).  If your
# package is not flat and you're not using automake, define top_build_prefix,
# top_builddir, and top_srcdir appropriately in your Makefiles.
# In the future, this macro may have to be called after LT_INIT.
AC_DEFUN([LTDL_INSTALLABLE],
[AC_BEFORE([$0], [LTDL_INIT])dnl
dnl Although the argument is deprecated and no longer documented,
dnl LTDL_INSTALLABLE used to take a DIRECTORY orgument, if we have one
dnl here make sure it is the same as any other declaration of libltdl's
dnl location!  This also ensures lt_ltdl_dir is set when configure.ac is
dnl not yet using an explicit LT_CONFIG_LTDL_DIR.
m4_ifval([$1], [_LT_CONFIG_LTDL_DIR([$1])])dnl
_$0()
])# LTDL_INSTALLABLE

# AC_LIBLTDL_INSTALLABLE accepted a directory argument in older libtools,
# now we have LT_CONFIG_LTDL_DIR:
AU_DEFUN([AC_LIBLTDL_INSTALLABLE],
[_LT_CONFIG_LTDL_DIR([m4_default([$1], [libltdl])])
_LTDL_INSTALLABLE])

dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIBLTDL_INSTALLABLE], [])


# _LTDL_INSTALLABLE
# -----------------
# Code shared by LTDL_INSTALLABLE and LTDL_INIT([installable]).
m4_defun([_LTDL_INSTALLABLE],
[if test -f "$prefix/lib/libltdl.la"; then
  lt_save_LDFLAGS=$LDFLAGS
  LDFLAGS="-L$prefix/lib $LDFLAGS"
  AC_CHECK_LIB([ltdl], [lt_dlinit], [lt_lib_ltdl=yes])
  LDFLAGS=$lt_save_LDFLAGS
  if test yes = "${lt_lib_ltdl-no}"; then
    if test yes != "$enable_ltdl_install"; then
      # Don't overwrite $prefix/lib/libltdl.la without --enable-ltdl-install
      AC_MSG_WARN([not overwriting libltdl at $prefix, force with '--enable-ltdl-install'])
      enable_ltdl_install=no
    fi
  elif test no = "$enable_ltdl_install"; then
    AC_MSG_WARN([libltdl not installed, but installation disabled])
  fi
fi

# If configure.ac declared an installable ltdl, and the user didn't override
# with --disable-ltdl-install, we will install the shipped libltdl.
case $enable_ltdl_install in
  no) ac_configure_args="$ac_configure_args --enable-ltdl-install=no"
      LIBLTDL=-lltdl
      LTDLDEPS=
      LTDLINCL=
      ;;
  *)  enable_ltdl_install=yes
      ac_configure_args="$ac_configure_args --enable-ltdl-install"
      LIBLTDL='_LT_BUILD_PREFIX'"${lt_ltdl_dir+$lt_ltdl_dir/}libltdl.la"
      LTDLDEPS=$LIBLTDL
      LTDLINCL='-I$(top_srcdir)'"${lt_ltdl_dir+/$lt_ltdl_dir}"
      ;;
esac

AC_SUBST([LIBLTDL])
AC_SUBST([LTDLDEPS])
AC_SUBST([LTDLINCL])

# For backwards non-gettext consistent compatibility...
INCLTDL=$LTDLINCL
AC_SUBST([INCLTDL])
])# LTDL_INSTALLABLE


# _LTDL_MODE_DISPATCH
# -------------------
m4_define([_LTDL_MODE_DISPATCH],
[dnl If _LTDL_DIR is '.', then we are configuring libltdl itself:
m4_if(_LTDL_DIR, [],
	[],
    dnl if _LTDL_MODE was not set already, the default value is 'subproject':
    [m4_case(m4_default(_LTDL_MODE, [subproject]),
	  [subproject], [AC_CONFIG_SUBDIRS(_LTDL_DIR)
			  _LT_SHELL_INIT([lt_dlopen_dir=$lt_ltdl_dir])],
	  [nonrecursive], [_LT_SHELL_INIT([lt_dlopen_dir=$lt_ltdl_dir; lt_libobj_prefix=$lt_ltdl_dir/])],
	  [recursive], [],
	[m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])dnl
dnl Be careful not to expand twice:
m4_define([$0], [])
])# _LTDL_MODE_DISPATCH


# _LT_LIBOBJ(MODULE_NAME)
# -----------------------
# Like AC_LIBOBJ, except that MODULE_NAME goes into _LT_LIBOBJS instead
# of into LIBOBJS.
AC_DEFUN([_LT_LIBOBJ], [
  m4_pattern_allow([^_LT_LIBOBJS$])
  _LT_LIBOBJS="$_LT_LIBOBJS $1.$ac_objext"
])# _LT_LIBOBJS


# LTDL_INIT([OPTIONS])
# --------------------
# Clients of libltdl can use this macro to allow the installer to
# choose between a shipped copy of the ltdl sources or a preinstalled
# version of the library.  If the shipped ltdl sources are not in a
# subdirectory named libltdl, the directory name must be given by
# LT_CONFIG_LTDL_DIR.
AC_DEFUN([LTDL_INIT],
[dnl Parse OPTIONS
_LT_SET_OPTIONS([$0], [$1])

dnl We need to keep our own list of libobjs separate from our parent project,
dnl and the easiest way to do that is redefine the AC_LIBOBJs macro while
dnl we look for our own LIBOBJs.
m4_pushdef([AC_LIBOBJ], m4_defn([_LT_LIBOBJ]))
m4_pushdef([AC_LIBSOURCES])

dnl If not otherwise defined, default to the 1.5.x compatible subproject mode:
m4_if(_LTDL_MODE, [],
        [m4_define([_LTDL_MODE], m4_default([$2], [subproject]))
        m4_if([-1], [m4_bregexp(_LTDL_MODE, [\(subproject\|\(non\)?recursive\)])],
                [m4_fatal([unknown libltdl mode: ]_LTDL_MODE)])])

AC_ARG_WITH([included_ltdl],
    [AS_HELP_STRING([--with-included-ltdl],
                    [use the GNU ltdl sources included here])])

if test yes != "$with_included_ltdl"; then
  # We are not being forced to use the included libltdl sources, so
  # decide whether there is a useful installed version we can use.
  AC_CHECK_HEADER([ltdl.h],
      [AC_CHECK_DECL([lt_dlinterface_register],
	   [AC_CHECK_LIB([ltdl], [lt_dladvise_preload],
	       [with_included_ltdl=no],
	       [with_included_ltdl=yes])],
	   [with_included_ltdl=yes],
	   [AC_INCLUDES_DEFAULT
	    #include <ltdl.h>])],
      [with_included_ltdl=yes],
      [AC_INCLUDES_DEFAULT]
  )
fi

dnl If neither LT_CONFIG_LTDL_DIR, LTDL_CONVENIENCE nor LTDL_INSTALLABLE
dnl was called yet, then for old times' sake, we assume libltdl is in an
dnl eponymous directory:
AC_PROVIDE_IFELSE([LT_CONFIG_LTDL_DIR], [], [_LT_CONFIG_LTDL_DIR([libltdl])])

AC_ARG_WITH([ltdl_include],
    [AS_HELP_STRING([--with-ltdl-include=DIR],
                    [use the ltdl headers installed in DIR])])

if test -n "$with_ltdl_include"; then
  if test -f "$with_ltdl_include/ltdl.h"; then :
  else
    AC_MSG_ERROR([invalid ltdl include directory: '$with_ltdl_include'])
  fi
else
  with_ltdl_include=no
fi

AC_ARG_WITH([ltdl_lib],
    [AS_HELP_STRING([--with-ltdl-lib=DIR],
                    [use the libltdl.la installed in DIR])])

if test -n "$with_ltdl_lib"; then
  if test -f "$with_ltdl_lib/libltdl.la"; then :
  else
    AC_MSG_ERROR([invalid ltdl library directory: '$with_ltdl_lib'])
  fi
else
  with_ltdl_lib=no
fi

case ,$with_included_ltdl,$with_ltdl_include,$with_ltdl_lib, in
  ,yes,no,no,)
	m4_case(m4_default(_LTDL_TYPE, [convenience]),
	    [convenience], [_LTDL_CONVENIENCE],
	    [installable], [_LTDL_INSTALLABLE],
	  [m4_fatal([unknown libltdl build type: ]_LTDL_TYPE)])
	;;
  ,no,no,no,)
	# If the included ltdl is not to be used, then use the
	# preinstalled libltdl we found.
	AC_DEFINE([HAVE_LTDL], [1],
	  [Define this if a modern libltdl is already installed])
	LIBLTDL=-lltdl
	LTDLDEPS=
	LTDLINCL=
	;;
  ,no*,no,*)
	AC_MSG_ERROR(['--with-ltdl-include' and '--with-ltdl-lib' options must be used together])
	;;
  *)	with_included_ltdl=no
	LIBLTDL="-L$with_ltdl_lib -lltdl"
	LTDLDEPS=
	LTDLINCL=-I$with_ltdl_include
	;;
esac
INCLTDL=$LTDLINCL

# Report our decision...
AC_MSG_CHECKING([where to find libltdl headers])
AC_MSG_RESULT([$LTDLINCL])
AC_MSG_CHECKING([where to find libltdl library])
AC_MSG_RESULT([$LIBLTDL])

_LTDL_SETUP

dnl restore autoconf definition.
m4_popdef([AC_LIBOBJ])
m4_popdef([AC_LIBSOURCES])

AC_CONFIG_COMMANDS_PRE([
    _ltdl_libobjs=
    _ltdl_ltlibobjs=
    if test -n "$_LT_LIBOBJS"; then
      # Remove the extension.
      _lt_sed_drop_objext='s/\.o$//;s/\.obj$//'
      for i in `for i in $_LT_LIBOBJS; do echo "$i"; done | $SED "$_lt_sed_drop_objext" | sort -u`; do
        _ltdl_libobjs="$_ltdl_libobjs $lt_libobj_prefix$i.$ac_objext"
        _ltdl_ltlibobjs="$_ltdl_ltlibobjs $lt_libobj_prefix$i.lo"
      done
    fi
    AC_SUBST([ltdl_LIBOBJS], [$_ltdl_libobjs])
    AC_SUBST([ltdl_LTLIBOBJS], [$_ltdl_ltlibobjs])
])

# Only expand once:
m4_define([LTDL_INIT])
])# LTDL_INIT

# Old names:
AU_DEFUN([AC_LIB_LTDL], [LTDL_INIT($@)])
AU_DEFUN([AC_WITH_LTDL], [LTDL_INIT($@)])
AU_DEFUN([LT_WITH_LTDL], [LTDL_INIT($@)])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LIB_LTDL], [])
dnl AC_DEFUN([AC_WITH_LTDL], [])
dnl AC_DEFUN([LT_WITH_LTDL], [])


# _LTDL_SETUP
# -----------
# Perform all the checks necessary for compilation of the ltdl objects
#  -- including compiler checks and header checks.  This is a public
# interface  mainly for the benefit of libltdl's own configure.ac, most
# other users should call LTDL_INIT instead.
AC_DEFUN([_LTDL_SETUP],
[AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([LT_SYS_MODULE_EXT])dnl
AC_REQUIRE([LT_SYS_MODULE_PATH])dnl
AC_REQUIRE([LT_SYS_DLSEARCH_PATH])dnl
AC_REQUIRE([LT_LIB_DLLOAD])dnl
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl
AC_REQUIRE([LT_FUNC_DLSYM_USCORE])dnl
AC_REQUIRE([LT_SYS_DLOPEN_DEPLIBS])dnl
AC_REQUIRE([LT_FUNC_ARGZ])dnl

m4_require([_LT_CHECK_OBJDIR])dnl
m4_require([_LT_HEADER_DLFCN])dnl
m4_require([_LT_CHECK_DLPREOPEN])dnl
m4_require([_LT_DECL_SED])dnl

dnl Don't require this, or it will be expanded earlier than the code
dnl that sets the variables it relies on:
_LT_ENABLE_INSTALL

dnl _LTDL_MODE specific code must be called at least once:
_LTDL_MODE_DISPATCH

# In order that ltdl.c can compile, find out the first AC_CONFIG_HEADERS
# the user used.  This is so that ltdl.h can pick up the parent projects
# config.h file, The first file in AC_CONFIG_HEADERS must contain the
# definitions required by ltdl.c.
# FIXME: Remove use of undocumented AC_LIST_HEADERS (2.59 compatibility).
AC_CONFIG_COMMANDS_PRE([dnl
m4_pattern_allow([^LT_CONFIG_H$])dnl
m4_ifset([AH_HEADER],
    [LT_CONFIG_H=AH_HEADER],
    [m4_ifset([AC_LIST_HEADERS],
	    [LT_CONFIG_H=`echo "AC_LIST_HEADERS" | $SED 's|^[[      ]]*||;s|[[ :]].*$||'`],
	[])])])
AC_SUBST([LT_CONFIG_H])

AC_CHECK_HEADERS([unistd.h dl.h sys/dl.h dld.h mach-o/dyld.h dirent.h],
	[], [], [AC_INCLUDES_DEFAULT])

AC_CHECK_FUNCS([closedir opendir readdir], [], [AC_LIBOBJ([lt__dirent])])
AC_CHECK_FUNCS([strlcat strlcpy], [], [AC_LIBOBJ([lt__strl])])

m4_pattern_allow([LT_LIBEXT])dnl
AC_DEFINE_UNQUOTED([LT_LIBEXT],["$libext"],[The archive extension])

name=
eval "lt_libprefix=\"$libname_spec\""
m4_pattern_allow([LT_LIBPREFIX])dnl
AC_DEFINE_UNQUOTED([LT_LIBPREFIX],["$lt_libprefix"],[The archive prefix])

name=ltdl
eval "LTDLOPEN=\"$libname_spec\""
AC_SUBST([LTDLOPEN])
])# _LTDL_SETUP


# _LT_ENABLE_INSTALL
# ------------------
m4_define([_LT_ENABLE_INSTALL],
[AC_ARG_ENABLE([ltdl-install],
    [AS_HELP_STRING([--enable-ltdl-install], [install libltdl])])

case ,$enable_ltdl_install,$enable_ltdl_convenience in
  *yes*) ;;
  *) enable_ltdl_convenience=yes ;;
esac

m4_ifdef([AM_CONDITIONAL],
[AM_CONDITIONAL(INSTALL_LTDL, test no != "${enable_ltdl_install-no}")
 AM_CONDITIONAL(CONVENIENCE_LTDL, test no != "${enable_ltdl_convenience-no}")])
])# _LT_ENABLE_INSTALL


# LT_SYS_DLOPEN_DEPLIBS
# ---------------------
AC_DEFUN([LT_SYS_DLOPEN_DEPLIBS],
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
AC_CACHE_CHECK([whether deplibs are loaded by dlopen],
  [lt_cv_sys_dlopen_deplibs],
  [# PORTME does your system automatically load deplibs for dlopen?
  # or its logical equivalent (e.g. shl_load for HP-UX < 11)
  # For now, we just catch OSes we know something about -- in the
  # future, we'll try test this programmatically.
  lt_cv_sys_dlopen_deplibs=unknown
  case $host_os in
  aix3*|aix4.1.*|aix4.2.*)
    # Unknown whether this is true for these versions of AIX, but
    # we want this 'case' here to explicitly catch those versions.
    lt_cv_sys_dlopen_deplibs=unknown
    ;;
  aix[[4-9]]*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  amigaos*)
    case $host_cpu in
    powerpc)
      lt_cv_sys_dlopen_deplibs=no
      ;;
    esac
    ;;
  bitrig*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  darwin*)
    # Assuming the user has installed a libdl from somewhere, this is true
    # If you are looking for one http://www.opendarwin.org/projects/dlcompat
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  freebsd* | dragonfly* | midnightbsd*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  gnu* | linux* | k*bsd*-gnu | kopensolaris*-gnu)
    # GNU and its variants, using gnu ld.so (Glibc)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  hpux10*|hpux11*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  interix*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  irix[[12345]]*|irix6.[[01]]*)
    # Catch all versions of IRIX before 6.2, and indicate that we don't
    # know how it worked for any of those versions.
    lt_cv_sys_dlopen_deplibs=unknown
    ;;
  irix*)
    # The case above catches anything before 6.2, and it's known that
    # at 6.2 and later dlopen does load deplibs.
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  netbsd* | netbsdelf*-gnu)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  openbsd*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  osf[[1234]]*)
    # dlopen did load deplibs (at least at 4.x), but until the 5.x series,
    # it did *not* use an RPATH in a shared library to find objects the
    # library depends on, so we explicitly say 'no'.
    lt_cv_sys_dlopen_deplibs=no
    ;;
  osf5.0|osf5.0a|osf5.1)
    # dlopen *does* load deplibs and with the right loader patch applied
    # it even uses RPATH in a shared library to search for shared objects
    # that the library depends on, but there's no easy way to know if that
    # patch is installed.  Since this is the case, all we can really
    # say is unknown -- it depends on the patch being installed.  If
    # it is, this changes to 'yes'.  Without it, it would be 'no'.
    lt_cv_sys_dlopen_deplibs=unknown
    ;;
  osf*)
    # the two cases above should catch all versions of osf <= 5.1.  Read
    # the comments above for what we know about them.
    # At > 5.1, deplibs are loaded *and* any RPATH in a shared library
    # is used to find them so we can finally say 'yes'.
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  qnx*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  solaris*)
    lt_cv_sys_dlopen_deplibs=yes
    ;;
  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
    libltdl_cv_sys_dlopen_deplibs=yes
    ;;
  esac
  ])
if test yes != "$lt_cv_sys_dlopen_deplibs"; then
 AC_DEFINE([LTDL_DLOPEN_DEPLIBS], [1],
    [Define if the OS needs help to load dependent libraries for dlopen().])
fi
])# LT_SYS_DLOPEN_DEPLIBS

# Old name:
AU_ALIAS([AC_LTDL_SYS_DLOPEN_DEPLIBS], [LT_SYS_DLOPEN_DEPLIBS])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYS_DLOPEN_DEPLIBS], [])


# LT_SYS_MODULE_EXT
# -----------------
AC_DEFUN([LT_SYS_MODULE_EXT],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([what extension is used for runtime loadable modules],
  [libltdl_cv_shlibext],
[
module=yes
eval libltdl_cv_shlibext=$shrext_cmds
module=no
eval libltdl_cv_shrext=$shrext_cmds
  ])
if test -n "$libltdl_cv_shlibext"; then
  m4_pattern_allow([LT_MODULE_EXT])dnl
  AC_DEFINE_UNQUOTED([LT_MODULE_EXT], ["$libltdl_cv_shlibext"],
    [Define to the extension used for runtime loadable modules, say, ".so".])
fi
if test "$libltdl_cv_shrext" != "$libltdl_cv_shlibext"; then
  m4_pattern_allow([LT_SHARED_EXT])dnl
  AC_DEFINE_UNQUOTED([LT_SHARED_EXT], ["$libltdl_cv_shrext"],
    [Define to the shared library suffix, say, ".dylib".])
fi
if test -n "$shared_archive_member_spec"; then
  m4_pattern_allow([LT_SHARED_LIB_MEMBER])dnl
  AC_DEFINE_UNQUOTED([LT_SHARED_LIB_MEMBER], ["($shared_archive_member_spec.o)"],
    [Define to the shared archive member specification, say "(shr.o)".])
fi
])# LT_SYS_MODULE_EXT

# Old name:
AU_ALIAS([AC_LTDL_SHLIBEXT], [LT_SYS_MODULE_EXT])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SHLIBEXT], [])


# LT_SYS_MODULE_PATH
# ------------------
AC_DEFUN([LT_SYS_MODULE_PATH],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([what variable specifies run-time module search path],
  [lt_cv_module_path_var], [lt_cv_module_path_var=$shlibpath_var])
if test -n "$lt_cv_module_path_var"; then
  m4_pattern_allow([LT_MODULE_PATH_VAR])dnl
  AC_DEFINE_UNQUOTED([LT_MODULE_PATH_VAR], ["$lt_cv_module_path_var"],
    [Define to the name of the environment variable that determines the run-time module search path.])
fi
])# LT_SYS_MODULE_PATH

# Old name:
AU_ALIAS([AC_LTDL_SHLIBPATH], [LT_SYS_MODULE_PATH])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SHLIBPATH], [])


# LT_SYS_DLSEARCH_PATH
# --------------------
AC_DEFUN([LT_SYS_DLSEARCH_PATH],
[m4_require([_LT_SYS_DYNAMIC_LINKER])dnl
AC_CACHE_CHECK([for the default library search path],
  [lt_cv_sys_dlsearch_path],
  [lt_cv_sys_dlsearch_path=$sys_lib_dlsearch_path_spec])
if test -n "$lt_cv_sys_dlsearch_path"; then
  sys_dlsearch_path=
  for dir in $lt_cv_sys_dlsearch_path; do
    if test -z "$sys_dlsearch_path"; then
      sys_dlsearch_path=$dir
    else
      sys_dlsearch_path=$sys_dlsearch_path$PATH_SEPARATOR$dir
    fi
  done
  m4_pattern_allow([LT_DLSEARCH_PATH])dnl
  AC_DEFINE_UNQUOTED([LT_DLSEARCH_PATH], ["$sys_dlsearch_path"],
    [Define to the system default library search path.])
fi
])# LT_SYS_DLSEARCH_PATH

# Old name:
AU_ALIAS([AC_LTDL_SYSSEARCHPATH], [LT_SYS_DLSEARCH_PATH])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYSSEARCHPATH], [])


# _LT_CHECK_DLPREOPEN
# -------------------
m4_defun([_LT_CHECK_DLPREOPEN],
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
AC_CACHE_CHECK([whether libtool supports -dlopen/-dlpreopen],
  [libltdl_cv_preloaded_symbols],
  [if test -n "$lt_cv_sys_global_symbol_pipe"; then
    libltdl_cv_preloaded_symbols=yes
  else
    libltdl_cv_preloaded_symbols=no
  fi
  ])
if test yes = "$libltdl_cv_preloaded_symbols"; then
  AC_DEFINE([HAVE_PRELOADED_SYMBOLS], [1],
    [Define if libtool can extract symbol lists from object files.])
fi
])# _LT_CHECK_DLPREOPEN


# LT_LIB_DLLOAD
# -------------
AC_DEFUN([LT_LIB_DLLOAD],
[m4_pattern_allow([^LT_DLLOADERS$])
LT_DLLOADERS=
AC_SUBST([LT_DLLOADERS])

AC_LANG_PUSH([C])
lt_dlload_save_LIBS=$LIBS

LIBADD_DLOPEN=
AC_SEARCH_LIBS([dlopen], [dl],
	[AC_DEFINE([HAVE_LIBDL], [1],
		   [Define if you have the libdl library or equivalent.])
	if test "$ac_cv_search_dlopen" != "none required"; then
	  LIBADD_DLOPEN=-ldl
	fi
	libltdl_cv_lib_dl_dlopen=yes
	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
    [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#if HAVE_DLFCN_H
#  include <dlfcn.h>
#endif
    ]], [[dlopen(0, 0);]])],
	    [AC_DEFINE([HAVE_LIBDL], [1],
		       [Define if you have the libdl library or equivalent.])
	    libltdl_cv_func_dlopen=yes
	    LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"],
	[AC_CHECK_LIB([svld], [dlopen],
		[AC_DEFINE([HAVE_LIBDL], [1],
			 [Define if you have the libdl library or equivalent.])
	        LIBADD_DLOPEN=-lsvld libltdl_cv_func_dlopen=yes
		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dlopen.la"])])])
if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"
then
  lt_save_LIBS=$LIBS
  LIBS="$LIBS $LIBADD_DLOPEN"
  AC_CHECK_FUNCS([dlerror])
  LIBS=$lt_save_LIBS
fi
AC_SUBST([LIBADD_DLOPEN])

LIBADD_SHL_LOAD=
AC_CHECK_FUNC([shl_load],
	[AC_DEFINE([HAVE_SHL_LOAD], [1],
		   [Define if you have the shl_load function.])
	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"],
    [AC_CHECK_LIB([dld], [shl_load],
	    [AC_DEFINE([HAVE_SHL_LOAD], [1],
		       [Define if you have the shl_load function.])
	    LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}shl_load.la"
	    LIBADD_SHL_LOAD=-ldld])])
AC_SUBST([LIBADD_SHL_LOAD])

case $host_os in
darwin[[1567]].*)
# We only want this for pre-Mac OS X 10.4.
  AC_CHECK_FUNC([_dyld_func_lookup],
	[AC_DEFINE([HAVE_DYLD], [1],
		   [Define if you have the _dyld_func_lookup function.])
	LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dyld.la"])
  ;;
beos*)
  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}load_add_on.la"
  ;;
cygwin* | mingw* | pw32*)
  AC_CHECK_DECLS([cygwin_conv_path], [], [], [[#include <sys/cygwin.h>]])
  LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}loadlibrary.la"
  ;;
esac

AC_CHECK_LIB([dld], [dld_link],
	[AC_DEFINE([HAVE_DLD], [1],
		   [Define if you have the GNU dld library.])
		LT_DLLOADERS="$LT_DLLOADERS ${lt_dlopen_dir+$lt_dlopen_dir/}dld_link.la"])
AC_SUBST([LIBADD_DLD_LINK])

m4_pattern_allow([^LT_DLPREOPEN$])
LT_DLPREOPEN=
if test -n "$LT_DLLOADERS"
then
  for lt_loader in $LT_DLLOADERS; do
    LT_DLPREOPEN="$LT_DLPREOPEN-dlpreopen $lt_loader "
  done
  AC_DEFINE([HAVE_LIBDLLOADER], [1],
            [Define if libdlloader will be built on this platform])
fi
AC_SUBST([LT_DLPREOPEN])

dnl This isn't used anymore, but set it for backwards compatibility
LIBADD_DL="$LIBADD_DLOPEN $LIBADD_SHL_LOAD"
AC_SUBST([LIBADD_DL])

LIBS=$lt_dlload_save_LIBS
AC_LANG_POP
])# LT_LIB_DLLOAD

# Old name:
AU_ALIAS([AC_LTDL_DLLIB], [LT_LIB_DLLOAD])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_DLLIB], [])


# LT_SYS_SYMBOL_USCORE
# --------------------
# does the compiler prefix global symbols with an underscore?
AC_DEFUN([LT_SYS_SYMBOL_USCORE],
[m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
AC_CACHE_CHECK([for _ prefix in compiled symbols],
  [lt_cv_sys_symbol_underscore],
  [lt_cv_sys_symbol_underscore=no
  cat > conftest.$ac_ext <<_LT_EOF
void nm_test_func(){}
int main(){nm_test_func;return 0;}
_LT_EOF
  if AC_TRY_EVAL(ac_compile); then
    # Now try to grab the symbols.
    ac_nlist=conftest.nm
    if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
      # See whether the symbols have a leading underscore.
      if grep '^. _nm_test_func' "$ac_nlist" >/dev/null; then
        lt_cv_sys_symbol_underscore=yes
      else
        if grep '^. nm_test_func ' "$ac_nlist" >/dev/null; then
	  :
        else
	  echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
        fi
      fi
    else
      echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
    fi
  else
    echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
    cat conftest.c >&AS_MESSAGE_LOG_FD
  fi
  rm -rf conftest*
  ])
  sys_symbol_underscore=$lt_cv_sys_symbol_underscore
  AC_SUBST([sys_symbol_underscore])
])# LT_SYS_SYMBOL_USCORE

# Old name:
AU_ALIAS([AC_LTDL_SYMBOL_USCORE], [LT_SYS_SYMBOL_USCORE])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_SYMBOL_USCORE], [])


# LT_FUNC_DLSYM_USCORE
# --------------------
AC_DEFUN([LT_FUNC_DLSYM_USCORE],
[AC_REQUIRE([_LT_COMPILER_PIC])dnl	for lt_prog_compiler_wl
AC_REQUIRE([LT_SYS_SYMBOL_USCORE])dnl	for lt_cv_sys_symbol_underscore
AC_REQUIRE([LT_SYS_MODULE_EXT])dnl	for libltdl_cv_shlibext
if test yes = "$lt_cv_sys_symbol_underscore"; then
  if test yes = "$libltdl_cv_func_dlopen" || test yes = "$libltdl_cv_lib_dl_dlopen"; then
    AC_CACHE_CHECK([whether we have to add an underscore for dlsym],
      [libltdl_cv_need_uscore],
      [libltdl_cv_need_uscore=unknown
      dlsym_uscore_save_LIBS=$LIBS
      LIBS="$LIBS $LIBADD_DLOPEN"
      libname=conftmod # stay within 8.3 filename limits!
      cat >$libname.$ac_ext <<_LT_EOF
[#line $LINENO "configure"
#include "confdefs.h"
/* When -fvisibility=hidden is used, assume the code has been annotated
   correspondingly for the symbols needed.  */
#if defined __GNUC__ && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
int fnord () __attribute__((visibility("default")));
#endif
int fnord () { return 42; }]
_LT_EOF

      # ltfn_module_cmds module_cmds
      # Execute tilde-delimited MODULE_CMDS with environment primed for
      # $module_cmds or $archive_cmds type content.
      ltfn_module_cmds ()
      {( # subshell avoids polluting parent global environment
          module_cmds_save_ifs=$IFS; IFS='~'
          for cmd in @S|@1; do
            IFS=$module_cmds_save_ifs
            libobjs=$libname.$ac_objext; lib=$libname$libltdl_cv_shlibext
            rpath=/not-exists; soname=$libname$libltdl_cv_shlibext; output_objdir=.
            major=; versuffix=; verstring=; deplibs=
            ECHO=echo; wl=$lt_prog_compiler_wl; allow_undefined_flag=
            eval $cmd
          done
          IFS=$module_cmds_save_ifs
      )}

      # Compile a loadable module using libtool macro expansion results.
      $CC $pic_flag -c $libname.$ac_ext
      ltfn_module_cmds "${module_cmds:-$archive_cmds}"

      # Try to fetch fnord with dlsym().
      libltdl_dlunknown=0; libltdl_dlnouscore=1; libltdl_dluscore=2
      cat >conftest.$ac_ext <<_LT_EOF
[#line $LINENO "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include <stdio.h>
#ifndef RTLD_GLOBAL
#  ifdef DL_GLOBAL
#    define RTLD_GLOBAL DL_GLOBAL
#  else
#    define RTLD_GLOBAL 0
#  endif
#endif
#ifndef RTLD_NOW
#  ifdef DL_NOW
#    define RTLD_NOW DL_NOW
#  else
#    define RTLD_NOW 0
#  endif
#endif
int main () {
  void *handle = dlopen ("`pwd`/$libname$libltdl_cv_shlibext", RTLD_GLOBAL|RTLD_NOW);
  int status = $libltdl_dlunknown;
  if (handle) {
    if (dlsym (handle, "fnord"))
      status = $libltdl_dlnouscore;
    else {
      if (dlsym (handle, "_fnord"))
        status = $libltdl_dluscore;
      else
	puts (dlerror ());
    }
    dlclose (handle);
  } else
    puts (dlerror ());
  return status;
}]
_LT_EOF
      if AC_TRY_EVAL(ac_link) && test -s "conftest$ac_exeext" 2>/dev/null; then
        (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
        libltdl_status=$?
        case x$libltdl_status in
          x$libltdl_dlnouscore) libltdl_cv_need_uscore=no ;;
	  x$libltdl_dluscore) libltdl_cv_need_uscore=yes ;;
	  x*) libltdl_cv_need_uscore=unknown ;;
        esac
      fi
      rm -rf conftest* $libname*
      LIBS=$dlsym_uscore_save_LIBS
    ])
  fi
fi

if test yes = "$libltdl_cv_need_uscore"; then
  AC_DEFINE([NEED_USCORE], [1],
    [Define if dlsym() requires a leading underscore in symbol names.])
fi
])# LT_FUNC_DLSYM_USCORE

# Old name:
AU_ALIAS([AC_LTDL_DLSYM_USCORE], [LT_FUNC_DLSYM_USCORE])
dnl aclocal-1.4 backwards compatibility:
dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])

# pkg.m4 - Macros to locate and use pkg-config.   -*- Autoconf -*-
# serial 12 (pkg-config-0.29.2)

dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
dnl 02111-1307, USA.
dnl
dnl As a special exception to the GNU General Public License, if you
dnl distribute this file as part of a program that contains a
dnl configuration script generated by Autoconf, you may include it under
dnl the same distribution terms that you use for the rest of that
dnl program.

dnl PKG_PREREQ(MIN-VERSION)
dnl -----------------------
dnl Since: 0.29
dnl
dnl Verify that the version of the pkg-config macros are at least
dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
dnl installed version of pkg-config, this checks the developer's version
dnl of pkg.m4 when generating configure.
dnl
dnl To ensure that this macro is defined, also add:
dnl m4_ifndef([PKG_PREREQ],
dnl     [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
dnl
dnl See the "Since" comment for each macro you use to see what version
dnl of the macros you require.
m4_defun([PKG_PREREQ],
[m4_define([PKG_MACROS_VERSION], [0.29.2])
m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
])dnl PKG_PREREQ

dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
dnl ----------------------------------
dnl Since: 0.16
dnl
dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
dnl first found in the path. Checks that the version of pkg-config found
dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
dnl used since that's the first version where most current features of
dnl pkg-config existed.
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])

if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
	_pkg_min_version=m4_default([$1], [0.9.0])
	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
		AC_MSG_RESULT([yes])
	else
		AC_MSG_RESULT([no])
		PKG_CONFIG=""
	fi
fi[]dnl
])dnl PKG_PROG_PKG_CONFIG

dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------------------------------
dnl Since: 0.18
dnl
dnl Check to see whether a particular set of modules exists. Similar to
dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
dnl
dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
dnl only at the first occurrence in configure.ac, so if the first place
dnl it's called might be skipped (such as if it is within an "if", you
dnl have to call PKG_CHECK_EXISTS manually
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
  m4_default([$2], [:])
m4_ifvaln([$3], [else
  $3])dnl
fi])

dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
dnl ---------------------------------------------
dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
dnl pkg_failed based on the result.
m4_define([_PKG_CONFIG],
[if test -n "$$1"; then
    pkg_cv_[]$1="$$1"
 elif test -n "$PKG_CONFIG"; then
    PKG_CHECK_EXISTS([$3],
                     [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
		      test "x$?" != "x0" && pkg_failed=yes ],
		     [pkg_failed=yes])
 else
    pkg_failed=untried
fi[]dnl
])dnl _PKG_CONFIG

dnl _PKG_SHORT_ERRORS_SUPPORTED
dnl ---------------------------
dnl Internal check to see if pkg-config supports short errors.
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
        _pkg_short_errors_supported=yes
else
        _pkg_short_errors_supported=no
fi[]dnl
])dnl _PKG_SHORT_ERRORS_SUPPORTED


dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl   [ACTION-IF-NOT-FOUND])
dnl --------------------------------------------------------------
dnl Since: 0.4.0
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

pkg_failed=no
AC_MSG_CHECKING([for $2])

_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])

m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])

if test $pkg_failed = yes; then
        AC_MSG_RESULT([no])
        _PKG_SHORT_ERRORS_SUPPORTED
        if test $_pkg_short_errors_supported = yes; then
                $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
        else
                $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
        fi
        # Put the nasty error message in config.log where it belongs
        echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD

        m4_default([$4], [AC_MSG_ERROR(
[Package requirements ($2) were not met:

$$1_PKG_ERRORS

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

_PKG_TEXT])[]dnl
        ])
elif test $pkg_failed = untried; then
        AC_MSG_RESULT([no])
        m4_default([$4], [AC_MSG_FAILURE(
[The pkg-config script could not be found or is too old.  Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.

_PKG_TEXT

To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
        ])
else
        $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
        $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
        AC_MSG_RESULT([yes])
        $3
fi[]dnl
])dnl PKG_CHECK_MODULES


dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl   [ACTION-IF-NOT-FOUND])
dnl ---------------------------------------------------------------------
dnl Since: 0.29
dnl
dnl Checks for existence of MODULES and gathers its build flags with
dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
dnl and VARIABLE-PREFIX_LIBS from --libs.
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
dnl configure.ac.
AC_DEFUN([PKG_CHECK_MODULES_STATIC],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
_save_PKG_CONFIG=$PKG_CONFIG
PKG_CONFIG="$PKG_CONFIG --static"
PKG_CHECK_MODULES($@)
PKG_CONFIG=$_save_PKG_CONFIG[]dnl
])dnl PKG_CHECK_MODULES_STATIC


dnl PKG_INSTALLDIR([DIRECTORY])
dnl -------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable pkgconfigdir as the location where a module
dnl should install pkg-config .pc files. By default the directory is
dnl $libdir/pkgconfig, but the default can be changed by passing
dnl DIRECTORY. The user can override through the --with-pkgconfigdir
dnl parameter.
AC_DEFUN([PKG_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
m4_pushdef([pkg_description],
    [pkg-config installation directory @<:@]pkg_default[@:>@])
AC_ARG_WITH([pkgconfigdir],
    [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
    [with_pkgconfigdir=]pkg_default)
AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_INSTALLDIR


dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
dnl --------------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable noarch_pkgconfigdir as the location where a
dnl module should install arch-independent pkg-config .pc files. By
dnl default the directory is $datadir/pkgconfig, but the default can be
dnl changed by passing DIRECTORY. The user can override through the
dnl --with-noarch-pkgconfigdir parameter.
AC_DEFUN([PKG_NOARCH_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
m4_pushdef([pkg_description],
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AC_ARG_WITH([noarch-pkgconfigdir],
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AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_NOARCH_INSTALLDIR


dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------
dnl Since: 0.28
dnl
dnl Retrieves the value of the pkg-config variable for the given module.
AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl

_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])

AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR

dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
dnl   [DESCRIPTION], [DEFAULT])
dnl ------------------------------------------
dnl
dnl Prepare a "--with-" configure option using the lowercase
dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
dnl PKG_CHECK_MODULES in a single macro.
AC_DEFUN([PKG_WITH_MODULES],
[
m4_pushdef([with_arg], m4_tolower([$1]))

m4_pushdef([description],
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m4_pushdef([def_arg], [m4_default([$6], [auto])])
m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])

m4_case(def_arg,
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AC_ARG_WITH(with_arg,
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AS_CASE([$AS_TR_SH([with_]with_arg)],
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m4_popdef([with_arg])
m4_popdef([description])
m4_popdef([def_arg])

])dnl PKG_WITH_MODULES

dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
dnl   [DESCRIPTION], [DEFAULT])
dnl -----------------------------------------------
dnl
dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
dnl check._[VARIABLE-PREFIX] is exported as make variable.
AC_DEFUN([PKG_HAVE_WITH_MODULES],
[
PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])

AM_CONDITIONAL([HAVE_][$1],
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])dnl PKG_HAVE_WITH_MODULES

dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
dnl   [DESCRIPTION], [DEFAULT])
dnl ------------------------------------------------------
dnl
dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
dnl and preprocessor variable.
AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
[
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AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
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])dnl PKG_HAVE_DEFINE_WITH_MODULES

# Copyright (C) 2002-2021 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_AUTOMAKE_VERSION(VERSION)
# ----------------------------
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AC_DEFUN([AM_AUTOMAKE_VERSION],
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# _AM_AUTOCONF_VERSION(VERSION)
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# AM_SET_CURRENT_AUTOMAKE_VERSION
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# AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-

# Copyright (C) 2001-2021 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.

# For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
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AC_DEFUN([AM_AUX_DIR_EXPAND],
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# Expand $ac_aux_dir to an absolute path.
am_aux_dir=`cd "$ac_aux_dir" && pwd`
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# AM_CONDITIONAL                                            -*- Autoconf -*-

# Copyright (C) 1997-2021 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_CONDITIONAL(NAME, SHELL-CONDITION)
# -------------------------------------
# Define a conditional.
AC_DEFUN([AM_CONDITIONAL],
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AC_SUBST([$1_TRUE])dnl
AC_SUBST([$1_FALSE])dnl
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m4_define([_AM_COND_VALUE_$1], [$2])dnl
if $2; then
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AC_CONFIG_COMMANDS_PRE(
[if test -z "${$1_TRUE}" && test -z "${$1_FALSE}"; then
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fi])])

# Copyright (C) 1999-2021 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.


# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
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# _AM_DEPENDENCIES(NAME)
# ----------------------
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# We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
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AC_DEFUN([_AM_DEPENDENCIES],
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AC_CACHE_CHECK([dependency style of $depcc],
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  cd ..
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AC_SUBST([$1DEPMODE], [depmode=$am_cv_$1_dependencies_compiler_type])
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# AM_SET_DEPDIR
# -------------
# Choose a directory name for dependency files.
# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
AC_DEFUN([AM_SET_DEPDIR],
[AC_REQUIRE([AM_SET_LEADING_DOT])dnl
AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
])


# AM_DEP_TRACK
# ------------
AC_DEFUN([AM_DEP_TRACK],
[AC_ARG_ENABLE([dependency-tracking], [dnl
AS_HELP_STRING(
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AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
AC_SUBST([AMDEPBACKSLASH])dnl
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AC_SUBST([am__nodep])dnl
_AM_SUBST_NOTMAKE([am__nodep])dnl
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# Generate code to set up dependency tracking.              -*- Autoconf -*-

# Copyright (C) 1999-2021 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_OUTPUT_DEPENDENCY_COMMANDS
# ------------------------------
AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
[{
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    AC_MSG_FAILURE([Something went wrong bootstrapping makefile fragments
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])# _AM_OUTPUT_DEPENDENCY_COMMANDS


# AM_OUTPUT_DEPENDENCY_COMMANDS
# -----------------------------
# This macro should only be invoked once -- use via AC_REQUIRE.
#
# This code is only required when automatic dependency tracking is enabled.
# This creates each '.Po' and '.Plo' makefile fragment that we'll need in
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AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
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# Do all the work for Automake.                             -*- Autoconf -*-

# Copyright (C) 1996-2021 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.

# This macro actually does too much.  Some checks are only needed if
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dnl Redefine AC_PROG_CC to automatically invoke _AM_PROG_CC_C_O.
m4_define([AC_PROG_CC],
m4_defn([AC_PROG_CC])
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# AM_INIT_AUTOMAKE(PACKAGE, VERSION, [NO-DEFINE])
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# -----------------------------------------------
# The call with PACKAGE and VERSION arguments is the old style
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AC_DEFUN([AM_INIT_AUTOMAKE],
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# Define the identity of the package.
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AM_MISSING_PROG([AUTOHEADER], [autoheader])
AM_MISSING_PROG([MAKEINFO], [makeinfo])
AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
AC_REQUIRE([AC_PROG_MKDIR_P])dnl
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# This file is free software; the Free Software Foundation
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# Copyright (C) 2003-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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# Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
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# Copyright (C) 1996-2021 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])
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# Check to see how 'make' treats includes.	            -*- Autoconf -*-

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# Copyright (C) 1997-2021 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# Helper functions for option handling.                     -*- Autoconf -*-

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
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# This file is free software; the Free Software Foundation
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# Copyright (C) 1999-2021 Free Software Foundation, Inc.
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# For backward compatibility.
AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])

# Copyright (C) 2001-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# Check to make sure that the build environment is sane.    -*- Autoconf -*-

# Copyright (C) 1996-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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# AM_SANITY_CHECK
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# Copyright (C) 2009-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
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# AM_SILENT_RULES([DEFAULT])
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dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
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AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
AM_BACKSLASH='\'
AC_SUBST([AM_BACKSLASH])dnl
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# Copyright (C) 2001-2021 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
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# Copyright (C) 2006-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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# AM_SUBST_NOTMAKE(VARIABLE)
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# Check how to create a tarball.                            -*- Autoconf -*-

# Copyright (C) 2004-2021 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
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      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([m4/gettext.m4])
m4_include([m4/iconv.m4])
m4_include([m4/intlmacosx.m4])
m4_include([m4/lib-ld.m4])
m4_include([m4/lib-link.m4])
m4_include([m4/lib-prefix.m4])
m4_include([m4/libtool.m4])
m4_include([m4/ltoptions.m4])
m4_include([m4/ltsugar.m4])
m4_include([m4/ltversion.m4])
m4_include([m4/lt~obsolete.m4])
m4_include([m4/nls.m4])
m4_include([m4/po.m4])
m4_include([m4/progtest.m4])
m4_include([acinclude.m4])