package ExtUtils::Liblist;
-use vars qw($VERSION);
-# Broken out of MakeMaker from version 4.11
-$VERSION = substr q$Revision: 1.2201 $, 10;
+use strict;
-use Config;
-use Cwd 'cwd';
-use File::Basename;
+use vars qw($VERSION @ISA);
+$VERSION = '1.03';
-sub ext {
- if ($^O eq 'VMS') { return &_vms_ext; }
- elsif($^O eq 'MSWin32') { return &_win32_ext; }
- else { return &_unix_os2_ext; }
-}
-
-sub _unix_os2_ext {
- my($self,$potential_libs, $verbose) = @_;
- if ($^O =~ 'os2' and $Config{libs}) {
- # Dynamic libraries are not transitive, so we may need including
- # the libraries linked against perl.dll again.
-
- $potential_libs .= " " if $potential_libs;
- $potential_libs .= $Config{libs};
- }
- return ("", "", "", "") unless $potential_libs;
- print STDOUT "Potential libraries are '$potential_libs':\n" if $verbose;
-
- my($so) = $Config{'so'};
- my($libs) = $Config{'libs'};
- my $Config_libext = $Config{lib_ext} || ".a";
-
-
- # compute $extralibs, $bsloadlibs and $ldloadlibs from
- # $potential_libs
- # this is a rewrite of Andy Dougherty's extliblist in perl
- # its home is in <distribution>/ext/util
-
- my(@searchpath); # from "-L/path" entries in $potential_libs
- my(@libpath) = split " ", $Config{'libpth'};
- my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
- my($fullname, $thislib, $thispth, @fullname);
- my($pwd) = cwd(); # from Cwd.pm
- my($found) = 0;
-
- foreach $thislib (split ' ', $potential_libs){
-
- # Handle possible linker path arguments.
- if ($thislib =~ s/^(-[LR])//){ # save path flag type
- my($ptype) = $1;
- unless (-d $thislib){
- print STDOUT "$ptype$thislib ignored, directory does not exist\n"
- if $verbose;
- next;
- }
- unless ($self->file_name_is_absolute($thislib)) {
- print STDOUT "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
- $thislib = $self->catdir($pwd,$thislib);
- }
- push(@searchpath, $thislib);
- push(@extralibs, "$ptype$thislib");
- push(@ldloadlibs, "$ptype$thislib");
- next;
- }
-
- # Handle possible library arguments.
- unless ($thislib =~ s/^-l//){
- print STDOUT "Unrecognized argument in LIBS ignored: '$thislib'\n";
- next;
- }
-
- my($found_lib)=0;
- foreach $thispth (@searchpath, @libpath){
-
- # Try to find the full name of the library. We need this to
- # determine whether it's a dynamically-loadable library or not.
- # This tends to be subject to various os-specific quirks.
- # For gcc-2.6.2 on linux (March 1995), DLD can not load
- # .sa libraries, with the exception of libm.sa, so we
- # deliberately skip them.
- if (@fullname =
- $self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){
- # Take care that libfoo.so.10 wins against libfoo.so.9.
- # Compare two libraries to find the most recent version
- # number. E.g. if you have libfoo.so.9.0.7 and
- # libfoo.so.10.1, first convert all digits into two
- # decimal places. Then we'll add ".00" to the shorter
- # strings so that we're comparing strings of equal length
- # Thus we'll compare libfoo.so.09.07.00 with
- # libfoo.so.10.01.00. Some libraries might have letters
- # in the version. We don't know what they mean, but will
- # try to skip them gracefully -- we'll set any letter to
- # '0'. Finally, sort in reverse so we can take the
- # first element.
-
- #TODO: iterate through the directory instead of sorting
-
- $fullname = "$thispth/" .
- (sort { my($ma) = $a;
- my($mb) = $b;
- $ma =~ tr/A-Za-z/0/s;
- $ma =~ s/\b(\d)\b/0$1/g;
- $mb =~ tr/A-Za-z/0/s;
- $mb =~ s/\b(\d)\b/0$1/g;
- while (length($ma) < length($mb)) { $ma .= ".00"; }
- while (length($mb) < length($ma)) { $mb .= ".00"; }
- # Comparison deliberately backwards
- $mb cmp $ma;} @fullname)[0];
- } elsif (-f ($fullname="$thispth/lib$thislib.$so")
- && (($Config{'dlsrc'} ne "dl_dld.xs") || ($thislib eq "m"))){
- } elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext")
- && ($thislib .= "_s") ){ # we must explicitly use _s version
- } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
- } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
- } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
- } elsif ($^O eq 'dgux'
- && -l ($fullname="$thispth/lib$thislib$Config_libext")
- && readlink($fullname) =~ /^elink:/) {
- # Some of DG's libraries look like misconnected symbolic
- # links, but development tools can follow them. (They
- # look like this:
- #
- # libm.a -> elink:${SDE_PATH:-/usr}/sde/\
- # ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
- #
- # , the compilation tools expand the environment variables.)
- } else {
- print STDOUT "$thislib not found in $thispth\n" if $verbose;
- next;
- }
- print STDOUT "'-l$thislib' found at $fullname\n" if $verbose;
- my($fullnamedir) = dirname($fullname);
- push @ld_run_path, $fullnamedir unless $ld_run_path_seen{$fullnamedir}++;
- $found++;
- $found_lib++;
-
- # Now update library lists
-
- # what do we know about this library...
- my $is_dyna = ($fullname !~ /\Q$Config_libext\E$/);
- my $in_perl = ($libs =~ /\B-l\Q$ {thislib}\E\b/s);
-
- # Do not add it into the list if it is already linked in
- # with the main perl executable.
- # We have to special-case the NeXT, because math and ndbm
- # are both in libsys_s
- unless ($in_perl ||
- ($Config{'osname'} eq 'next' &&
- ($thislib eq 'm' || $thislib eq 'ndbm')) ){
- push(@extralibs, "-l$thislib");
- }
-
- # We might be able to load this archive file dynamically
- if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
- || ($Config{'dlsrc'} =~ /dl_dld/) )
- {
- # We push -l$thislib instead of $fullname because
- # it avoids hardwiring a fixed path into the .bs file.
- # Mkbootstrap will automatically add dl_findfile() to
- # the .bs file if it sees a name in the -l format.
- # USE THIS, when dl_findfile() is fixed:
- # push(@bsloadlibs, "-l$thislib");
- # OLD USE WAS while checking results against old_extliblist
- push(@bsloadlibs, "$fullname");
- } else {
- if ($is_dyna){
- # For SunOS4, do not add in this shared library if
- # it is already linked in the main perl executable
- push(@ldloadlibs, "-l$thislib")
- unless ($in_perl and $^O eq 'sunos');
- } else {
- push(@ldloadlibs, "-l$thislib");
- }
- }
- last; # found one here so don't bother looking further
- }
- print STDOUT "Note (probably harmless): "
- ."No library found for -l$thislib\n"
- unless $found_lib>0;
- }
- return ('','','','') unless $found;
- ("@extralibs", "@bsloadlibs", "@ldloadlibs",join(":",@ld_run_path));
-}
+use File::Spec;
+require ExtUtils::Liblist::Kid;
+@ISA = qw(ExtUtils::Liblist::Kid File::Spec);
-sub _win32_ext {
- my($self, $potential_libs, $verbose) = @_;
-
- # If user did not supply a list, we punt.
- # (caller should probably use the list in $Config{libs})
- return ("", "", "", "") unless $potential_libs;
-
- my($so) = $Config{'so'};
- my($libs) = $Config{'libs'};
- my($libpth) = $Config{'libpth'};
- my($libext) = $Config{'lib_ext'} || ".lib";
-
- if ($libs and $potential_libs !~ /:nodefault/i) {
- # If Config.pm defines a set of default libs, we always
- # tack them on to the user-supplied list, unless the user
- # specified :nodefault
-
- $potential_libs .= " " if $potential_libs;
- $potential_libs .= $libs;
- }
- print STDOUT "Potential libraries are '$potential_libs':\n" if $verbose;
-
- # compute $extralibs from $potential_libs
-
- my(@searchpath); # from "-L/path" entries in $potential_libs
- my(@libpath) = split " ", $libpth;
- my(@extralibs);
- my($fullname, $thislib, $thispth);
- my($pwd) = cwd(); # from Cwd.pm
- my($lib) = '';
- my($found) = 0;
-
- foreach $thislib (split ' ', $potential_libs){
-
- # Handle possible linker path arguments.
- if ($thislib =~ s/^-L// and not -d $thislib) {
- print STDOUT "-L$thislib ignored, directory does not exist\n"
- if $verbose;
- next;
- }
- elsif (-d $thislib) {
- unless ($self->file_name_is_absolute($thislib)) {
- print STDOUT "Warning: -L$thislib changed to -L$pwd/$thislib\n";
- $thislib = $self->catdir($pwd,$thislib);
- }
- push(@searchpath, $thislib);
- next;
- }
-
- # Handle possible library arguments.
- $thislib =~ s/^-l//;
- $thislib .= $libext if $thislib !~ /\Q$libext\E$/i;
-
- my($found_lib)=0;
- foreach $thispth (@searchpath, @libpath){
- unless (-f ($fullname="$thispth\\$thislib")) {
- print STDOUT "$thislib not found in $thispth\n" if $verbose;
- next;
- }
- print STDOUT "'$thislib' found at $fullname\n" if $verbose;
- $found++;
- $found_lib++;
- push(@extralibs, $fullname);
- last;
- }
- print STDOUT "Note (probably harmless): "
- ."No library found for '$thislib'\n"
- unless $found_lib>0;
- }
- return ('','','','') unless $found;
- $lib = join(' ',@extralibs);
- print "Result: $lib\n" if $verbose;
- wantarray ? ($lib, '', $lib, '') : $lib;
+# Backwards compatibility with old interface.
+sub ext {
+ goto &ExtUtils::Liblist::Kid::ext;
}
-
-sub _vms_ext {
- my($self, $potential_libs,$verbose) = @_;
- return ('', '', '', '') unless $potential_libs;
-
- my(@dirs,@libs,$dir,$lib,%sh,%olb,%obj);
- my $cwd = cwd();
- my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
- # List of common Unix library names and there VMS equivalents
- # (VMS equivalent of '' indicates that the library is automatially
- # searched by the linker, and should be skipped here.)
- my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
- 'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
- 'socket' => '', 'X11' => 'DECW$XLIBSHR',
- 'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
- 'Xmu' => 'DECW$XMULIBSHR');
- if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
-
- print STDOUT "Potential libraries are '$potential_libs'\n" if $verbose;
-
- # First, sort out directories and library names in the input
- foreach $lib (split ' ',$potential_libs) {
- push(@dirs,$1), next if $lib =~ /^-L(.*)/;
- push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
- push(@dirs,$lib), next if -d $lib;
- push(@libs,$1), next if $lib =~ /^-l(.*)/;
- push(@libs,$lib);
- }
- push(@dirs,split(' ',$Config{'libpth'}));
-
- # Now make sure we've got VMS-syntax absolute directory specs
- # (We don't, however, check whether someone's hidden a relative
- # path in a logical name.)
- foreach $dir (@dirs) {
- unless (-d $dir) {
- print STDOUT "Skipping nonexistent Directory $dir\n" if $verbose > 1;
- $dir = '';
- next;
- }
- print STDOUT "Resolving directory $dir\n" if $verbose;
- if ($self->file_name_is_absolute($dir)) { $dir = $self->fixpath($dir,1); }
- else { $dir = $self->catdir($cwd,$dir); }
- }
- @dirs = grep { length($_) } @dirs;
- unshift(@dirs,''); # Check each $lib without additions first
-
- LIB: foreach $lib (@libs) {
- if (exists $libmap{$lib}) {
- next unless length $libmap{$lib};
- $lib = $libmap{$lib};
- }
-
- my(@variants,$variant,$name,$test,$cand);
- my($ctype) = '';
-
- # If we don't have a file type, consider it a possibly abbreviated name and
- # check for common variants. We try these first to grab libraries before
- # a like-named executable image (e.g. -lperl resolves to perlshr.exe
- # before perl.exe).
- if ($lib !~ /\.[^:>\]]*$/) {
- push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
- push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
- }
- push(@variants,$lib);
- print STDOUT "Looking for $lib\n" if $verbose;
- foreach $variant (@variants) {
- foreach $dir (@dirs) {
- my($type);
-
- $name = "$dir$variant";
- print "\tChecking $name\n" if $verbose > 2;
- if (-f ($test = VMS::Filespec::rmsexpand($name))) {
- # It's got its own suffix, so we'll have to figure out the type
- if ($test =~ /(?:$so|exe)$/i) { $type = 'sh'; }
- elsif ($test =~ /(?:$lib_ext|olb)$/i) { $type = 'olb'; }
- elsif ($test =~ /(?:$obj_ext|obj)$/i) {
- print STDOUT "Note (probably harmless): "
- ."Plain object file $test found in library list\n";
- $type = 'obj';
- }
- else {
- print STDOUT "Note (probably harmless): "
- ."Unknown library type for $test; assuming shared\n";
- $type = 'sh';
- }
- }
- elsif (-f ($test = VMS::Filespec::rmsexpand($name,$so)) or
- -f ($test = VMS::Filespec::rmsexpand($name,'.exe'))) {
- $type = 'sh';
- $name = $test unless $test =~ /exe;?\d*$/i;
- }
- elsif (not length($ctype) and # If we've got a lib already, don't bother
- ( -f ($test = VMS::Filespec::rmsexpand($name,$lib_ext)) or
- -f ($test = VMS::Filespec::rmsexpand($name,'.olb')))) {
- $type = 'olb';
- $name = $test unless $test =~ /olb;?\d*$/i;
- }
- elsif (not length($ctype) and # If we've got a lib already, don't bother
- ( -f ($test = VMS::Filespec::rmsexpand($name,$obj_ext)) or
- -f ($test = VMS::Filespec::rmsexpand($name,'.obj')))) {
- print STDOUT "Note (probably harmless): "
- ."Plain object file $test found in library list\n";
- $type = 'obj';
- $name = $test unless $test =~ /obj;?\d*$/i;
- }
- if (defined $type) {
- $ctype = $type; $cand = $name;
- last if $ctype eq 'sh';
- }
- }
- if ($ctype) {
- eval '$' . $ctype . "{'$cand'}++";
- die "Error recording library: $@" if $@;
- print STDOUT "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1;
- next LIB;
- }
- }
- print STDOUT "Note (probably harmless): "
- ."No library found for $lib\n";
- }
-
- @libs = sort keys %obj;
- # This has to precede any other CRTLs, so just make it first
- if ($olb{VAXCCURSE}) {
- push(@libs,"$olb{VAXCCURSE}/Library");
- delete $olb{VAXCCURSE};
- }
- push(@libs, map { "$_/Library" } sort keys %olb);
- push(@libs, map { "$_/Share" } sort keys %sh);
- $lib = join(' ',@libs);
- print "Result: $lib\n" if $verbose;
- wantarray ? ($lib, '', $lib, '') : $lib;
+sub lsdir {
+ shift;
+ my $rex = qr/$_[1]/;
+ opendir DIR, $_[0];
+ my @out = grep /$rex/, readdir DIR;
+ closedir DIR;
+ return @out;
}
-1;
-
__END__
=head1 NAME
=head1 SYNOPSIS
-C<require ExtUtils::Liblist;>
+ require ExtUtils::Liblist;
+
+ $MM->ext($potential_libs, $verbose, $need_names);
-C<ExtUtils::Liblist::ext($self, $potential_libs, $verbose);>
+ # Usually you can get away with:
+ ExtUtils::Liblist->ext($potential_libs, $verbose, $need_names)
=head1 DESCRIPTION
This utility takes a list of libraries in the form C<-llib1 -llib2
--llib3> and prints out lines suitable for inclusion in an extension
+-llib3> and returns lines suitable for inclusion in an extension
Makefile. Extra library paths may be included with the form
C<-L/another/path> this will affect the searches for all subsequent
libraries.
-It returns an array of four scalar values: EXTRALIBS, BSLOADLIBS,
-LDLOADLIBS, and LD_RUN_PATH. Some of these don't mean anything
-on VMS and Win32. See the details about those platform specifics
-below.
+It returns an array of four or five scalar values: EXTRALIBS,
+BSLOADLIBS, LDLOADLIBS, LD_RUN_PATH, and, optionally, a reference to
+the array of the filenames of actual libraries. Some of these don't
+mean anything unless on Unix. See the details about those platform
+specifics below. The list of the filenames is returned only if
+$need_names argument is true.
Dependent libraries can be linked in one of three ways:
by the ld command when the perl binary is linked with the extension
library. See EXTRALIBS below.
-=item * For dynamic extensions
+=item * For dynamic extensions at build/link time
by the ld command when the shared object is built/linked. See
LDLOADLIBS below.
-=item * For dynamic extensions
+=item * For dynamic extensions at load time
by the DynaLoader when the shared object is loaded. See BSLOADLIBS
below.
=head2 EXTRALIBS
List of libraries that need to be linked with when linking a perl
-binary which includes this extension Only those libraries that
+binary which includes this extension. Only those libraries that
actually exist are included. These are written to a file and used
when linking perl.
=head1 PORTABILITY
This module deals with a lot of system dependencies and has quite a
-few architecture specific B<if>s in the code.
+few architecture specific C<if>s in the code.
=head2 VMS implementation
=item *
Input library and path specifications are accepted with or without the
-C<-l> and C<-L> prefices used by Unix linkers. If neither prefix is
+C<-l> and C<-L> prefixes used by Unix linkers. If neither prefix is
present, a token is considered a directory to search if it is in fact
a directory, and a library to search for otherwise. Authors who wish
their extensions to be portable to Unix or OS/2 should use the Unix
Wherever possible, shareable images are preferred to object libraries,
and object libraries to plain object files. In accordance with VMS
naming conventions, ext() looks for files named I<lib>shr and I<lib>rtl;
-it also looks for I<lib>lib and libI<lib> to accomodate Unix conventions
+it also looks for I<lib>lib and libI<lib> to accommodate Unix conventions
used in some ported software.
=item *
=item *
-LDLOADLIBS and EXTRALIBS are always identical under VMS, and BSLOADLIBS
-and LD_RIN_PATH are always empty.
+LDLOADLIBS contains both the libraries found based on C<$potential_libs> and
+the CRTLs, if any, specified in Config.pm. EXTRALIBS contains just those
+libraries found based on C<$potential_libs>. BSLOADLIBS and LD_RUN_PATH
+are always empty.
=back
=item *
+If C<$potential_libs> is empty, the return value will be empty.
+Otherwise, the libraries specified by C<$Config{perllibs}> (see Config.pm)
+will be appended to the list of C<$potential_libs>. The libraries
+will be searched for in the directories specified in C<$potential_libs>,
+C<$Config{libpth}>, and in C<$Config{installarchlib}/CORE>.
+For each library that is found, a space-separated list of fully qualified
+library pathnames is generated.
+
+=item *
+
Input library and path specifications are accepted with or without the
-C<-l> and C<-L> prefices used by Unix linkers. C<-lfoo> specifies the
-library C<foo.lib> and C<-Ls:ome\dir> specifies a directory to look for
-the libraries that follow. If neither prefix is present, a token is
+C<-l> and C<-L> prefixes used by Unix linkers.
+
+An entry of the form C<-La:\foo> specifies the C<a:\foo> directory to look
+for the libraries that follow.
+
+An entry of the form C<-lfoo> specifies the library C<foo>, which may be
+spelled differently depending on what kind of compiler you are using. If
+you are using GCC, it gets translated to C<libfoo.a>, but for other win32
+compilers, it becomes C<foo.lib>. If no files are found by those translated
+names, one more attempt is made to find them using either C<foo.a> or
+C<libfoo.lib>, depending on whether GCC or some other win32 compiler is
+being used, respectively.
+
+If neither the C<-L> or C<-l> prefix is present in an entry, the entry is
considered a directory to search if it is in fact a directory, and a
library to search for otherwise. The C<$Config{lib_ext}> suffix will
-be appended to any entries that are not directories and don't already
-have the suffix. Authors who wish their extensions to be portable to
-Unix or OS/2 should use the Unix prefixes, since the Unix-OS/2 version
-of ext() requires them.
+be appended to any entries that are not directories and don't already have
+the suffix.
+
+Note that the C<-L> and C<-l> prefixes are B<not required>, but authors
+who wish their extensions to be portable to Unix or OS/2 should use the
+prefixes, since the Unix-OS/2 version of ext() requires them.
=item *
=item *
-If C<$potential_libs> is empty, the return value will be empty.
-Otherwise, the libraries specified by C<$Config{libs}> (see Config.pm)
-will be appended to the list of C<$potential_libs>. The libraries
-will be searched for in the directories specified in C<$potential_libs>
-as well as in C<$Config{libpth}>. For each library that is found, a
-space-separated list of fully qualified library pathnames is generated.
-You may specify an entry that matches C</:nodefault/i> in
-C<$potential_libs> to disable the appending of default libraries
-found in C<$Config{libs}> (this should be only needed very rarely).
+Entries in C<$potential_libs> beginning with a colon and followed by
+alphanumeric characters are treated as flags. Unknown flags will be ignored.
+
+An entry that matches C</:nodefault/i> disables the appending of default
+libraries found in C<$Config{perllibs}> (this should be only needed very rarely).
+
+An entry that matches C</:nosearch/i> disables all searching for
+the libraries specified after it. Translation of C<-Lfoo> and
+C<-lfoo> still happens as appropriate (depending on compiler being used,
+as reflected by C<$Config{cc}>), but the entries are not verified to be
+valid files or directories.
+
+An entry that matches C</:search/i> reenables searching for
+the libraries specified after it. You can put it at the end to
+enable searching for default libraries specified by C<$Config{perllibs}>.
=item *
The libraries specified may be a mixture of static libraries and
import libraries (to link with DLLs). Since both kinds are used
-pretty transparently on the win32 platform, we do not attempt to
+pretty transparently on the Win32 platform, we do not attempt to
distinguish between them.
=item *
LDLOADLIBS and EXTRALIBS are always identical under Win32, and BSLOADLIBS
and LD_RUN_PATH are always empty (this may change in future).
+=item *
+
+You must make sure that any paths and path components are properly
+surrounded with double-quotes if they contain spaces. For example,
+C<$potential_libs> could be (literally):
+
+ "-Lc:\Program Files\vc\lib" msvcrt.lib "la test\foo bar.lib"
+
+Note how the first and last entries are protected by quotes in order
+to protect the spaces.
+
+=item *
+
+Since this module is most often used only indirectly from extension
+C<Makefile.PL> files, here is an example C<Makefile.PL> entry to add
+a library to the build process for an extension:
+
+ LIBS => ['-lgl']
+
+When using GCC, that entry specifies that MakeMaker should first look
+for C<libgl.a> (followed by C<gl.a>) in all the locations specified by
+C<$Config{libpth}>.
+
+When using a compiler other than GCC, the above entry will search for
+C<gl.lib> (followed by C<libgl.lib>).
+
+If the library happens to be in a location not in C<$Config{libpth}>,
+you need:
+
+ LIBS => ['-Lc:\gllibs -lgl']
+
+Here is a less often used example:
+
+ LIBS => ['-lgl', ':nosearch -Ld:\mesalibs -lmesa -luser32']
+
+This specifies a search for library C<gl> as before. If that search
+fails to find the library, it looks at the next item in the list. The
+C<:nosearch> flag will prevent searching for the libraries that follow,
+so it simply returns the value as C<-Ld:\mesalibs -lmesa -luser32>,
+since GCC can use that value as is with its linker.
+
+When using the Visual C compiler, the second item is returned as
+C<-libpath:d:\mesalibs mesa.lib user32.lib>.
+
+When using the Borland compiler, the second item is returned as
+C<-Ld:\mesalibs mesa.lib user32.lib>, and MakeMaker takes care of
+moving the C<-Ld:\mesalibs> to the correct place in the linker
+command line.
+
=back
projects / p5sagit/p5-mst-13.2.git / blobdiff