summaryrefslogtreecommitdiff
path: root/gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm
diff options
context:
space:
mode:
Diffstat (limited to 'gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm')
-rw-r--r--gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm363
1 files changed, 340 insertions, 23 deletions
diff --git a/gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm b/gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm
index b67f86bbce0..5b4d6abecb4 100644
--- a/gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm
+++ b/gnu/usr.bin/perl/lib/ExtUtils/Liblist.pm
@@ -1,17 +1,21 @@
package ExtUtils::Liblist;
-
+use vars qw($VERSION);
# Broken out of MakeMaker from version 4.11
-$ExtUtils::Liblist::VERSION = substr q$Revision: 1.1 $, 10;
+$VERSION = substr q$Revision: 1.2 $, 10;
use Config;
use Cwd 'cwd';
use File::Basename;
-my $Config_libext = $Config{lib_ext} || ".a";
-
sub ext {
- my($self,$potential_libs, $Verbose) = @_;
+ if ($^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.
@@ -20,15 +24,16 @@ sub ext {
$potential_libs .= $Config{libs};
}
return ("", "", "", "") unless $potential_libs;
- print STDOUT "Potential libraries are '$potential_libs':\n" if $Verbose;
+ warn "Potential libraries are '$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 " ", $Config{'libpth'};
@@ -43,12 +48,12 @@ sub ext {
if ($thislib =~ s/^(-[LR])//){ # save path flag type
my($ptype) = $1;
unless (-d $thislib){
- print STDOUT "$ptype$thislib ignored, directory does not exist\n"
- if $Verbose;
+ warn "$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";
+ warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
$thislib = $self->catdir($pwd,$thislib);
}
push(@searchpath, $thislib);
@@ -59,7 +64,7 @@ sub ext {
# Handle possible library arguments.
unless ($thislib =~ s/^-l//){
- print STDOUT "Unrecognized argument in LIBS ignored: '$thislib'\n";
+ warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
next;
}
@@ -72,7 +77,8 @@ sub ext {
# 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,"^lib$thislib\.$so\.[0-9]+")){
+ 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
@@ -118,10 +124,10 @@ sub ext {
#
# , the compilation tools expand the environment variables.)
} else {
- print STDOUT "$thislib not found in $thispth\n" if $Verbose;
+ warn "$thislib not found in $thispth\n" if $verbose;
next;
}
- print STDOUT "'-l$thislib' found at $fullname\n" if $Verbose;
+ warn "'-l$thislib' found at $fullname\n" if $verbose;
my($fullnamedir) = dirname($fullname);
push @ld_run_path, $fullnamedir unless $ld_run_path_seen{$fullnamedir}++;
$found++;
@@ -135,15 +141,18 @@ sub ext {
# Do not add it into the list if it is already linked in
# with the main perl executable.
- # We have to special-case the NeXT, because all the math
- # is also in libsys_s
+ # We have to special-case the NeXT, because math and ndbm
+ # are both in libsys_s
unless ($in_perl ||
- ($^O eq 'next' && $thislib eq 'm') ){
+ ($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 ( $Config{'dlsrc'} =~ /dl_next|dl_dld/){
+ if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
+ || ($Config{'dlsrc'} =~ /dl_dld/) )
+ {
# We push -l$thislib instead of $fullname because
# it avoids hardwiring a fixed path into the .bs file.
# Mkbootstrap will automatically add dl_findfile() to
@@ -164,13 +173,223 @@ sub ext {
}
last; # found one here so don't bother looking further
}
- print STDOUT "Warning (will try anyway): No library found for -l$thislib\n"
+ warn "Note (probably harmless): "
+ ."No library found for -l$thislib\n"
unless $found_lib>0;
}
return ('','','','') unless $found;
("@extralibs", "@bsloadlibs", "@ldloadlibs",join(":",@ld_run_path));
}
+sub _win32_ext {
+ my($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 .= $libs;
+ }
+ warn "Potential libraries are '$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 $thislib) {
+ warn "-L$thislib ignored, directory does not exist\n"
+ if $verbose;
+ next;
+ }
+ elsif (-d $thislib) {
+ unless ($self->file_name_is_absolute($thislib)) {
+ warn "Warning: -L$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")) {
+ warn "$thislib not found in $thispth\n" if $verbose;
+ next;
+ }
+ warn "'$thislib' found at $fullname\n" if $verbose;
+ $found++;
+ $found_lib++;
+ push(@extralibs, $fullname);
+ last;
+ }
+ warn "Note (probably harmless): "
+ ."No library found for '$thislib'\n"
+ unless $found_lib>0;
+ }
+ return ('','','','') unless $found;
+ $lib = join(' ',@extralibs);
+ warn "Result: $lib\n" if $verbose;
+ wantarray ? ($lib, '', $lib, '') : $lib;
+}
+
+
+sub _vms_ext {
+ my($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') { $libmap{'curses'} = 'VAXCCURSE'; }
+
+ warn "Potential libraries are '$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) {
+ warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
+ $dir = '';
+ next;
+ }
+ warn "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);
+ warn "Looking for $lib\n" if $verbose;
+ foreach $variant (@variants) {
+ foreach $dir (@dirs) {
+ my($type);
+
+ $name = "$dir$variant";
+ warn "\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) {
+ warn "Note (probably harmless): "
+ ."Plain object file $test found in library list\n";
+ $type = 'obj';
+ }
+ else {
+ warn "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')))) {
+ warn "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 $@;
+ warn "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1;
+ next LIB;
+ }
+ }
+ warn "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);
+ warn "Result: $lib\n" if $verbose;
+ wantarray ? ($lib, '', $lib, '') : $lib;
+}
+
1;
__END__
@@ -183,7 +402,7 @@ ExtUtils::Liblist - determine libraries to use and how to use them
C<require ExtUtils::Liblist;>
-C<ExtUtils::Liblist::ext($potential_libs, $Verbose);>
+C<ExtUtils::Liblist::ext($self, $potential_libs, $verbose);>
=head1 DESCRIPTION
@@ -194,7 +413,9 @@ 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.
+LDLOADLIBS, and LD_RUN_PATH. Some of these don't mean anything
+on VMS and Win32. See the details about those platform specifics
+below.
Dependent libraries can be linked in one of three ways:
@@ -244,11 +465,107 @@ object file. This list is used to create a .bs (bootstrap) file.
This module deals with a lot of system dependencies and has quite a
few architecture specific B<if>s in the code.
+=head2 VMS implementation
+
+The version of ext() which is executed under VMS differs from the
+Unix-OS/2 version in several respects:
+
+=over 2
+
+=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
+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
+prefixes, since the Unix-OS/2 version of ext() requires them.
+
+=item *
+
+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
+used in some ported software.
+
+=item *
+
+For each library that is found, an appropriate directive for a linker options
+file is generated. The return values are space-separated strings of
+these directives, rather than elements used on the linker command line.
+
+=item *
+
+LDLOADLIBS and EXTRALIBS are always identical under VMS, and BSLOADLIBS
+and LD_RIN_PATH are always empty.
+
+=back
+
+In addition, an attempt is made to recognize several common Unix library
+names, and filter them out or convert them to their VMS equivalents, as
+appropriate.
+
+In general, the VMS version of ext() should properly handle input from
+extensions originally designed for a Unix or VMS environment. If you
+encounter problems, or discover cases where the search could be improved,
+please let us know.
+
+=head2 Win32 implementation
+
+The version of ext() which is executed under Win32 differs from the
+Unix-OS/2 version in several respects:
+
+=over 2
+
+=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
+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.
+
+=item *
+
+Entries cannot be plain object files, as many Win32 compilers will
+not handle object files in the place of libraries.
+
+=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).
+
+=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
+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).
+
+=back
+
+
=head1 SEE ALSO
L<ExtUtils::MakeMaker>
=cut
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-17 05:41:18 +0000