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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
+.ft R
+.fi
+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
+.ie n \{\
+. ds C` ""
+. ds C' ""
+'br\}
+.el\{\
+. ds C`
+. ds C'
+'br\}
+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD. Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
+.nr rF 0
+.if \n(.g .if rF .nr rF 1
+.if (\n(rF:(\n(.g==0)) \{\
+. if \nF \{\
+. de IX
+. tm Index:\\$1\t\\n%\t"\\$2"
+..
+. if !\nF==2 \{\
+. nr % 0
+. nr F 2
+. \}
+. \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "PERLMACOSX 1"
+.TH PERLMACOSX 1 2024-01-12 "perl v5.38.2" "Perl Programmers Reference Guide"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+perlmacosx \- Perl under Mac OS X
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+This document briefly describes Perl under Mac OS X.
+.PP
+.Vb 7
+\& curl \-O https://www.cpan.org/src/perl\-5.38.2.tar.gz
+\& tar \-xzf perl\-5.38.2.tar.gz
+\& cd perl\-5.38.2
+\& ./Configure \-des \-Dprefix=/usr/local/
+\& make
+\& make test
+\& sudo make install
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+The latest Perl release (5.38.2 as of this writing) builds without changes
+under all versions of Mac OS X from 10.3 "Panther" onwards.
+.PP
+In order to build your own version of Perl you will need 'make',
+which is part of Apple's developer tools \- also known as Xcode. From
+Mac OS X 10.7 "Lion" onwards, it can be downloaded separately as the
+\&'Command Line Tools' bundle directly from <https://developer.apple.com/downloads/>
+(you will need a free account to log in), or as a part of the Xcode suite,
+freely available at the App Store. Xcode is a pretty big app, so
+unless you already have it or really want it, you are advised to get the
+\&'Command Line Tools' bundle separately from the link above. If you want
+to do it from within Xcode, go to Xcode \-> Preferences \-> Downloads and
+select the 'Command Line Tools' option.
+.PP
+Between Mac OS X 10.3 "Panther" and 10.6 "Snow Leopard", the 'Command
+Line Tools' bundle was called 'unix tools', and was usually supplied
+with Mac OS install DVDs.
+.PP
+Earlier Mac OS X releases (10.2 "Jaguar" and older) did not include a
+completely thread-safe libc, so threading is not fully supported. Also,
+earlier releases included a buggy libdb, so some of the DB_File tests
+are known to fail on those releases.
+.SS "Installation Prefix"
+.IX Subsection "Installation Prefix"
+The default installation location for this release uses the traditional
+UNIX directory layout under /usr/local. This is the recommended location
+for most users, and will leave the Apple-supplied Perl and its modules
+undisturbed.
+.PP
+Using an installation prefix of '/usr' will result in a directory layout
+that mirrors that of Apple's default Perl, with core modules stored in
+\&'/System/Library/Perl/${version}', CPAN modules stored in
+\&'/Library/Perl/${version}', and the addition of
+\&'/Network/Library/Perl/${version}' to \f(CW@INC\fR for modules that are stored
+on a file server and used by many Macs.
+.SS "SDK support"
+.IX Subsection "SDK support"
+First, export the path to the SDK into the build environment:
+.PP
+.Vb 1
+\& export SDK=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk
+.Ve
+.PP
+Please make sure the SDK version (i.e. the numbers right before '.sdk')
+matches your system's (in this case, Mac OS X 10.8 "Mountain Lion"), as it is
+possible to have more than one SDK installed. Also make sure the path exists
+in your system, and if it doesn't please make sure the SDK is properly
+installed, as it should come with the 'Command Line Tools' bundle mentioned
+above. Finally, if you have an older Mac OS X (10.6 "Snow Leopard" and below)
+running Xcode 4.2 or lower, the SDK path might be something like
+\&\f(CW\*(Aq/Developer/SDKs/MacOSX10.3.9.sdk\*(Aq\fR.
+.PP
+You can use the SDK by exporting some additions to Perl's 'ccflags' and '..flags'
+config variables:
+.PP
+.Vb 5
+\& ./Configure \-Accflags="\-nostdinc \-B$SDK/usr/include/gcc \e
+\& \-B$SDK/usr/lib/gcc \-isystem$SDK/usr/include \e
+\& \-F$SDK/System/Library/Frameworks" \e
+\& \-Aldflags="\-Wl,\-syslibroot,$SDK" \e
+\& \-de
+.Ve
+.SS "Universal Binary support"
+.IX Subsection "Universal Binary support"
+Note: From Mac OS X 10.6 "Snow Leopard" onwards, Apple only supports
+Intel-based hardware. This means you can safely skip this section unless
+you have an older Apple computer running on ppc or wish to create a perl
+binary with backwards compatibility.
+.PP
+You can compile perl as a universal binary (built for both ppc and intel).
+In Mac OS X 10.4 "Tiger", you must export the 'u' variant of the SDK:
+.PP
+.Vb 1
+\& export SDK=/Developer/SDKs/MacOSX10.4u.sdk
+.Ve
+.PP
+Mac OS X 10.5 "Leopard" and above do not require the 'u' variant.
+.PP
+In addition to the compiler flags used to select the SDK, also add the flags
+for creating a universal binary:
+.PP
+.Vb 6
+\& ./Configure \-Accflags="\-arch i686 \-arch ppc \-nostdinc \e
+\& \-B$SDK/usr/include/gcc \e
+\& \-B$SDK/usr/lib/gcc \-isystem$SDK/usr/include \e
+\& \-F$SDK/System/Library/Frameworks" \e
+\& \-Aldflags="\-arch i686 \-arch ppc \-Wl,\-syslibroot,$SDK" \e
+\& \-de
+.Ve
+.PP
+Keep in mind that these compiler and linker settings will also be used when
+building CPAN modules. For XS modules to be compiled as a universal binary, any
+libraries it links to must also be universal binaries. The system libraries that
+Apple includes with the 10.4u SDK are all universal, but user-installed libraries
+may need to be re-installed as universal binaries.
+.SS "64\-bit PPC support"
+.IX Subsection "64-bit PPC support"
+Follow the instructions in \fIINSTALL\fR to build perl with support for 64\-bit
+integers (\f(CW\*(C`use64bitint\*(C'\fR) or both 64\-bit integers and 64\-bit addressing
+(\f(CW\*(C`use64bitall\*(C'\fR). In the latter case, the resulting binary will run only
+on G5\-based hosts.
+.PP
+Support for 64\-bit addressing is experimental: some aspects of Perl may be
+omitted or buggy. Note the messages output by \fIConfigure\fR for further
+information. Please use <https://github.com/Perl/perl5/issues> to submit a
+problem report in the event that you encounter difficulties.
+.PP
+When building 64\-bit modules, it is your responsibility to ensure that linked
+external libraries and frameworks provide 64\-bit support: if they do not,
+module building may appear to succeed, but attempts to use the module will
+result in run-time dynamic linking errors, and subsequent test failures.
+You can use \f(CW\*(C`file\*(C'\fR to discover the architectures supported by a library:
+.PP
+.Vb 4
+\& $ file libgdbm.3.0.0.dylib
+\& libgdbm.3.0.0.dylib: Mach\-O fat file with 2 architectures
+\& libgdbm.3.0.0.dylib (for architecture ppc): Mach\-O dynamically linked shared library ppc
+\& libgdbm.3.0.0.dylib (for architecture ppc64): Mach\-O 64\-bit dynamically linked shared library ppc64
+.Ve
+.PP
+Note that this issue precludes the building of many Macintosh-specific CPAN
+modules (\f(CW\*(C`Mac::*\*(C'\fR), as the required Apple frameworks do not provide PPC64
+support. Similarly, downloads from Fink or Darwinports are unlikely to provide
+64\-bit support; the libraries must be rebuilt from source with the appropriate
+compiler and linker flags. For further information, see Apple's
+\&\fI64\-Bit Transition Guide\fR at
+<https://developer.apple.com/library/archive/documentation/Darwin/Conceptual/64bitPorting/transition/transition.html>.
+.SS "libperl and Prebinding"
+.IX Subsection "libperl and Prebinding"
+Mac OS X ships with a dynamically-loaded libperl, but the default for
+this release is to compile a static libperl. The reason for this is
+pre-binding. Dynamic libraries can be pre-bound to a specific address in
+memory in order to decrease load time. To do this, one needs to be aware
+of the location and size of all previously-loaded libraries. Apple
+collects this information as part of their overall OS build process, and
+thus has easy access to it when building Perl, but ordinary users would
+need to go to a great deal of effort to obtain the information needed
+for pre-binding.
+.PP
+You can override the default and build a shared libperl if you wish
+(Configure\ ...\ \-Duseshrplib).
+.PP
+With Mac OS X 10.4 "Tiger" and newer, there is almost no performance
+penalty for non-prebound libraries. Earlier releases will suffer a greater
+load time than either the static library, or Apple's pre-bound dynamic library.
+.SS "Updating Apple's Perl"
+.IX Subsection "Updating Apple's Perl"
+In a word \- don't, at least not without a *very* good reason. Your scripts
+can just as easily begin with "#!/usr/local/bin/perl" as with
+"#!/usr/bin/perl". Scripts supplied by Apple and other third parties as
+part of installation packages and such have generally only been tested
+with the /usr/bin/perl that's installed by Apple.
+.PP
+If you find that you do need to update the system Perl, one issue worth
+keeping in mind is the question of static vs. dynamic libraries. If you
+upgrade using the default static libperl, you will find that the dynamic
+libperl supplied by Apple will not be deleted. If both libraries are
+present when an application that links against libperl is built, ld will
+link against the dynamic library by default. So, if you need to replace
+Apple's dynamic libperl with a static libperl, you need to be sure to
+delete the older dynamic library after you've installed the update.
+.SS "Known problems"
+.IX Subsection "Known problems"
+If you have installed extra libraries such as GDBM through Fink
+(in other words, you have libraries under \fI/sw/lib\fR), or libdlcompat
+to \fI/usr/local/lib\fR, you may need to be extra careful when running
+Configure to not to confuse Configure and Perl about which libraries
+to use. Being confused will show up for example as "dyld" errors about
+symbol problems, for example during "make test". The safest bet is to run
+Configure as
+.PP
+.Vb 1
+\& Configure ... \-Uloclibpth \-Dlibpth=/usr/lib
+.Ve
+.PP
+to make Configure look only into the system libraries. If you have some
+extra library directories that you really want to use (such as newer
+Berkeley DB libraries in pre-Panther systems), add those to the libpth:
+.PP
+.Vb 1
+\& Configure ... \-Uloclibpth \-Dlibpth=\*(Aq/usr/lib /opt/lib\*(Aq
+.Ve
+.PP
+The default of building Perl statically may cause problems with complex
+applications like Tk: in that case consider building shared Perl
+.PP
+.Vb 1
+\& Configure ... \-Duseshrplib
+.Ve
+.PP
+but remember that there's a startup cost to pay in that case (see above
+"libperl and Prebinding").
+.PP
+Starting with Tiger (Mac OS X 10.4), Apple shipped broken locale files for
+the eu_ES locale (Basque-Spain). In previous releases of Perl, this resulted in
+failures in the \fIlib/locale\fR test. These failures have been suppressed
+in the current release of Perl by making the test ignore the broken locale.
+If you need to use the eu_ES locale, you should contact Apple support.
+.SS Cocoa
+.IX Subsection "Cocoa"
+There are two ways to use Cocoa from Perl. Apple's PerlObjCBridge
+module, included with Mac OS X, can be used by standalone scripts to
+access Foundation (i.e. non-GUI) classes and objects.
+.PP
+An alternative is CamelBones, a framework that allows access to both
+Foundation and AppKit classes and objects, so that full GUI applications
+can be built in Perl. CamelBones can be found on SourceForge, at
+<https://www.sourceforge.net/projects/camelbones/>.
+.SH "Starting From Scratch"
+.IX Header "Starting From Scratch"
+Unfortunately it is not that difficult somehow manage to break one's
+Mac OS X Perl rather severely. If all else fails and you want to
+really, \fBREALLY\fR, start from scratch and remove even your Apple Perl
+installation (which has become corrupted somehow), the following
+instructions should do it. \fBPlease think twice before following
+these instructions: they are much like conducting brain surgery to
+yourself. Without anesthesia.\fR We will \fBnot\fR come to fix your system
+if you do this.
+.PP
+First, get rid of the libperl.dylib:
+.PP
+.Vb 2
+\& # cd /System/Library/Perl/darwin/CORE
+\& # rm libperl.dylib
+.Ve
+.PP
+Then delete every .bundle file found anywhere in the folders:
+.PP
+.Vb 2
+\& /System/Library/Perl
+\& /Library/Perl
+.Ve
+.PP
+You can find them for example by
+.PP
+.Vb 1
+\& # find /System/Library/Perl /Library/Perl \-name \*(Aq*.bundle\*(Aq \-print
+.Ve
+.PP
+After this you can either copy Perl from your operating system media
+(you will need at least the /System/Library/Perl and /usr/bin/perl),
+or rebuild Perl from the source code with \f(CW\*(C`Configure \-Dprefix=/usr
+\&\-Duseshrplib\*(C'\fR NOTE: the \f(CW\*(C`\-Dprefix=/usr\*(C'\fR to replace the system Perl
+works much better with Perl 5.8.1 and later, in Perl 5.8.0 the
+settings were not quite right.
+.PP
+"Pacifist" from CharlesSoft (<https://www.charlessoft.com/>) is a nice
+way to extract the Perl binaries from the OS media, without having to
+reinstall the entire OS.
+.SH AUTHOR
+.IX Header "AUTHOR"
+This README was written by Sherm Pendley <sherm@dot\-app.org>,
+and subsequently updated by Dominic Dunlop <domo@computer.org>
+and Breno G. de Oliveira <garu@cpan.org>. The "Starting From Scratch"
+recipe was contributed by John Montbriand <montbriand@apple.com>.
+.SH DATE
+.IX Header "DATE"
+Last modified 2013\-04\-29.