[p5sagit/p5-mst-13.2.git] / lib / ExtUtils / Liblist / Kid.pm

package ExtUtils::Liblist::Kid;

# XXX Splitting this out into its own .pm is a temporary solution.

# This kid package is to be used by MakeMaker.  It will not work if
# $self is not a Makemaker.

use 5.006;
# Broken out of MakeMaker from version 4.11

use strict;
our $VERSION = 6.49_01;

use Config;
use Cwd 'cwd';
use File::Basename;
use File::Spec;

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, $give_libs) = @_;
    $verbose ||= 0;

    if ($^O =~ 'os2' and $Config{perllibs}) { 
	# Dynamic libraries are not transitive, so we may need including
	# the libraries linked against perl.dll again.

	$potential_libs .= " " if $potential_libs;
	$potential_libs .= $Config{perllibs};
    }
    return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
    warn "Potential libraries are '$potential_libs':\n" if $verbose;

    my($so)   = $Config{so};
    my($libs) = defined $Config{perllibs} ? $Config{perllibs} : $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

    my(@searchpath); # from "-L/path" entries in $potential_libs
    my(@libpath) = split " ", $Config{'libpth'};
    my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
    my(@libs, %libs_seen);
    my($fullname, @fullname);
    my($pwd) = cwd(); # from Cwd.pm
    my($found) = 0;

    foreach my $thislib (split ' ', $potential_libs) {

	# Handle possible linker path arguments.
	if ($thislib =~ s/^(-[LR]|-Wl,-R)//){	# save path flag type
	    my($ptype) = $1;
	    unless (-d $thislib){
		warn "$ptype$thislib ignored, directory does not exist\n"
			if $verbose;
		next;
	    }
	    my($rtype) = $ptype;
	    if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) {
		if ($Config{'lddlflags'} =~ /-Wl,-R/) {
		    $rtype = '-Wl,-R';
		} elsif ($Config{'lddlflags'} =~ /-R/) {
		    $rtype = '-R';
		}
	    }
	    unless (File::Spec->file_name_is_absolute($thislib)) {
	      warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
	      $thislib = $self->catdir($pwd,$thislib);
	    }
	    push(@searchpath, $thislib);
	    push(@extralibs,  "$ptype$thislib");
	    push(@ldloadlibs, "$rtype$thislib");
	    next;
	}

	# Handle possible library arguments.
	unless ($thislib =~ s/^-l//){
	  warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
	  next;
	}

	my($found_lib)=0;
	foreach my $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$Config_libext")
                 && ($Config{'archname'} !~ /RM\d\d\d-svr4/)
		 && ($thislib .= "_s") ){ # we must explicitly use _s version
	    } elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
	    } elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
            } elsif (-f ($fullname="$thispth/lib$thislib.dll$Config_libext")){
	    } elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
	    } elsif ($^O eq 'dgux'
		 && -l ($fullname="$thispth/lib$thislib$Config_libext")
		 && readlink($fullname) =~ /^elink:/s) {
		 # Some of DG's libraries look like misconnected symbolic
		 # links, but development tools can follow them.  (They
		 # look like this:
		 #
		 #    libm.a -> elink:${SDE_PATH:-/usr}/sde/\
		 #    ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
		 #
		 # , the compilation tools expand the environment variables.)
	    } else {
		warn "$thislib not found in $thispth\n" if $verbose;
		next;
	    }
	    warn "'-l$thislib' found at $fullname\n" if $verbose;
	    push @libs, $fullname unless $libs_seen{$fullname}++;
	    $found++;
	    $found_lib++;

	    # Now update library lists

	    # what do we know about this library...
	    my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/);
	    my $in_perl = ($libs =~ /\B-l\Q${thislib}\E\b/s);

            # include the path to the lib once in the dynamic linker path
            # but only if it is a dynamic lib and not in Perl itself
            my($fullnamedir) = dirname($fullname);
            push @ld_run_path, $fullnamedir
                 if $is_dyna && !$in_perl &&
                    !$ld_run_path_seen{$fullnamedir}++;

	    # 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
	}
	warn "Note (probably harmless): "
		     ."No library found for -l$thislib\n"
	    unless $found_lib>0;
    }

    unless( $found ) {
        return ('','','','', ($give_libs ? \@libs : ()));
    }
    else {
        return ("@extralibs", "@bsloadlibs", "@ldloadlibs",
                join(":",@ld_run_path), ($give_libs ? \@libs : ()));
    }
}

sub _win32_ext {

    require Text::ParseWords;

    my($self, $potential_libs, $verbose, $give_libs) = @_;
    $verbose ||= 0;

    # If user did not supply a list, we punt.
    # (caller should probably use the list in $Config{libs})
    return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;

    my $cc		= $Config{cc};
    my $VC		= $cc =~ /^cl/i;
    my $BC		= $cc =~ /^bcc/i;
    my $GC		= $cc =~ /^gcc/i;
    my $so		= $Config{'so'};
    my $libs		= $Config{'perllibs'};
    my $libpth		= $Config{'libpth'};
    my $libext		= $Config{'lib_ext'} || ".lib";
    my(@libs, %libs_seen);

    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;

    # normalize to forward slashes
    $libpth =~ s,\\,/,g;
    $potential_libs =~ s,\\,/,g;

    # compute $extralibs from $potential_libs

    my @searchpath;		    # from "-L/path" in $potential_libs
    my @libpath		= Text::ParseWords::quotewords('\s+', 0, $libpth);
    my @extralibs;
    my $pwd		= cwd();    # from Cwd.pm
    my $lib		= '';
    my $found		= 0;
    my $search		= 1;
    my($fullname);

    # add "$Config{installarchlib}/CORE" to default search path
    push @libpath, "$Config{installarchlib}/CORE";

    if ($VC and exists $ENV{LIB} and $ENV{LIB}) {
        push @libpath, split /;/, $ENV{LIB};
    }

    foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){

	my $thislib = $_;

        # see if entry is a flag
	if (/^:\w+$/) {
	    $search	= 0 if lc eq ':nosearch';
	    $search	= 1 if lc eq ':search';
	    warn "Ignoring unknown flag '$thislib'\n"
		if $verbose and !/^:(no)?(search|default)$/i;
	    next;
	}

	# if searching is disabled, do compiler-specific translations
	unless ($search) {
	    s/^-l(.+)$/$1.lib/ unless $GC;
	    s/^-L/-libpath:/ if $VC;
	    push(@extralibs, $_);
	    $found++;
	    next;
	}

	# handle possible linker path arguments
	if (s/^-L// and not -d) {
	    warn "$thislib ignored, directory does not exist\n"
		if $verbose;
	    next;
	}
	elsif (-d) {
	    unless (File::Spec->file_name_is_absolute($_)) {
	      warn "Warning: '$thislib' changed to '-L$pwd/$_'\n";
	      $_ = $self->catdir($pwd,$_);
	    }
	    push(@searchpath, $_);
	    next;
	}

	# handle possible library arguments
	if (s/^-l// and $GC and !/^lib/i) {
	    $_ = "lib$_";
	}
	$_ .= $libext if !/\Q$libext\E$/i;

	my $secondpass = 0;
    LOOKAGAIN:

        # look for the file itself
	if (-f) {
	    warn "'$thislib' found as '$_'\n" if $verbose;
	    $found++;
	    push(@extralibs, $_);
	    next;
	}

	my $found_lib = 0;
	foreach my $thispth (@searchpath, @libpath){
	    unless (-f ($fullname="$thispth\\$_")) {
		warn "'$thislib' not found as '$fullname'\n" if $verbose;
		next;
	    }
	    warn "'$thislib' found as '$fullname'\n" if $verbose;
	    $found++;
	    $found_lib++;
	    push(@extralibs, $fullname);
	    push @libs, $fullname unless $libs_seen{$fullname}++;
	    last;
	}

	# do another pass with (or without) leading 'lib' if they used -l
	if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) {
	    if ($GC) {
		goto LOOKAGAIN if s/^lib//i;
	    }
	    elsif (!/^lib/i) {
		$_ = "lib$_";
		goto LOOKAGAIN;
	    }
	}

	# give up
	warn "Note (probably harmless): "
		     ."No library found for $thislib\n"
	    unless $found_lib>0;

    }

    return ('','','','', ($give_libs ? \@libs : ())) unless $found;

    # make sure paths with spaces are properly quoted
    @extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
    @libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs;
    $lib = join(' ',@extralibs);

    # normalize back to backward slashes (to help braindead tools)
    # XXX this may break equally braindead GNU tools that don't understand
    # backslashes, either.  Seems like one can't win here.  Cursed be CP/M.
    $lib =~ s,/,\\,g;

    warn "Result: $lib\n" if $verbose;
    wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib;
}


sub _vms_ext {
  my($self, $potential_libs, $verbose, $give_libs) = @_;
  $verbose ||= 0;

  my(@crtls,$crtlstr);
  @crtls = ( ($Config{'ldflags'} =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
              . 'PerlShr/Share' );
  push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
  push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
  # In general, we pass through the basic libraries from %Config unchanged.
  # The one exception is that if we're building in the Perl source tree, and
  # a library spec could be resolved via a logical name, we go to some trouble
  # to insure that the copy in the local tree is used, rather than one to
  # which a system-wide logical may point.
  if ($self->{PERL_SRC}) {
    my($locspec,$type);
    foreach my $lib (@crtls) { 
      if (($locspec,$type) = $lib =~ m{^([\w\$-]+)(/\w+)?} and $locspec =~ /perl/i) {
        if    (lc $type eq '/share')   { $locspec .= $Config{'exe_ext'}; }
        elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
        else                           { $locspec .= $Config{'obj_ext'}; }
        $locspec = $self->catfile($self->{PERL_SRC},$locspec);
        $lib = "$locspec$type" if -e $locspec;
      }
    }
  }
  $crtlstr = @crtls ? join(' ',@crtls) : '';

  unless ($potential_libs) {
    warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
    return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
  }

  my(%found,@fndlibs,$ldlib);
  my $cwd = cwd();
  my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
  # List of common Unix library names and their VMS equivalents
  # (VMS equivalent of '' indicates that the library is automatically
  # searched by the linker, and should be skipped here.)
  my(@flibs, %libs_seen);
  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
  my(@dirs, @libs);
  foreach my $lib (split ' ',$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 my $dir (@dirs) {
    unless (-d $dir) {
      warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
      $dir = '';
      next;
    }
    warn "Resolving directory $dir\n" if $verbose;
    if (File::Spec->file_name_is_absolute($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 my $lib (@libs) {
    if (exists $libmap{$lib}) {
      next unless length $libmap{$lib};
      $lib = $libmap{$lib};
    }

    my(@variants,$cand);
    my($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 my $variant (@variants) {
      my($fullname, $name);

      foreach my $dir (@dirs) {
        my($type);

        $name = "$dir$variant";
        warn "\tChecking $name\n" if $verbose > 2;
        $fullname = VMS::Filespec::rmsexpand($name);
        if (defined $fullname and -f $fullname) {
          # It's got its own suffix, so we'll have to figure out the type
          if    ($fullname =~ /(?:$so|exe)$/i)      { $type = 'SHR'; }
          elsif ($fullname =~ /(?:$lib_ext|olb)$/i) { $type = 'OLB'; }
          elsif ($fullname =~ /(?:$obj_ext|obj)$/i) {
            warn "Note (probably harmless): "
                ."Plain object file $fullname found in library list\n";
            $type = 'OBJ';
          }
          else {
            warn "Note (probably harmless): "
                ."Unknown library type for $fullname; assuming shared\n";
            $type = 'SHR';
          }
        }
        elsif (-f ($fullname = VMS::Filespec::rmsexpand($name,$so))      or
               -f ($fullname = VMS::Filespec::rmsexpand($name,'.exe')))     {
          $type = 'SHR';
          $name = $fullname unless $fullname =~ /exe;?\d*$/i;
        }
        elsif (not length($ctype) and  # If we've got a lib already, 
                                       # don't bother
               ( -f ($fullname = VMS::Filespec::rmsexpand($name,$lib_ext)) or
                 -f ($fullname = VMS::Filespec::rmsexpand($name,'.olb'))))  {
          $type = 'OLB';
          $name = $fullname unless $fullname =~ /olb;?\d*$/i;
        }
        elsif (not length($ctype) and  # If we've got a lib already, 
                                       # don't bother
               ( -f ($fullname = VMS::Filespec::rmsexpand($name,$obj_ext)) or
                 -f ($fullname = VMS::Filespec::rmsexpand($name,'.obj'))))  {
          warn "Note (probably harmless): "
		       ."Plain object file $fullname found in library list\n";
          $type = 'OBJ';
          $name = $fullname unless $fullname =~ /obj;?\d*$/i;
        }
        if (defined $type) {
          $ctype = $type; $cand = $name;
          last if $ctype eq 'SHR';
        }
      }
      if ($ctype) { 
        # This has to precede any other CRTLs, so just make it first
        if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }  
        else                      { push    @{$found{$ctype}}, $cand; }
        warn "\tFound as $cand (really $fullname), type $ctype\n" 
          if $verbose > 1;
	push @flibs, $name unless $libs_seen{$fullname}++;
        next LIB;
      }
    }
    warn "Note (probably harmless): "
		 ."No library found for $lib\n";
  }

  push @fndlibs, @{$found{OBJ}}                      if exists $found{OBJ};
  push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
  push @fndlibs, map { "$_/Share"   } @{$found{SHR}} if exists $found{SHR};
  my $lib = join(' ',@fndlibs);

  $ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
  warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
  wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
}

1;
Commit	Line	Data
f6d6199c	1	package ExtUtils::Liblist::Kid;
	2
	3	# XXX Splitting this out into its own .pm is a temporary solution.
	4
	5	# This kid package is to be used by MakeMaker. It will not work if
	6	# $self is not a Makemaker.
	7
a592ba15	8	use 5.006;
f6d6199c	9	# Broken out of MakeMaker from version 4.11
f6d6199c	10
1df8d179	11	use strict;
1487aac6	12	our $VERSION = 6.49_01;
f6d6199c	13
	14	use Config;
	15	use Cwd 'cwd';
	16	use File::Basename;
	17	use File::Spec;
	18
	19	sub ext {
	20	if ($^O eq 'VMS') { return &_vms_ext; }
	21	elsif($^O eq 'MSWin32') { return &_win32_ext; }
	22	else { return &_unix_os2_ext; }
	23	}
	24
	25	sub _unix_os2_ext {
	26	my($self,$potential_libs, $verbose, $give_libs) = @_;
479d2113	27	$verbose \|\|= 0;
479d2113	28
f6d6199c	29	if ($^O =~ 'os2' and $Config{perllibs}) {
	30	# Dynamic libraries are not transitive, so we may need including
	31	# the libraries linked against perl.dll again.
	32
	33	$potential_libs .= " " if $potential_libs;
	34	$potential_libs .= $Config{perllibs};
	35	}
	36	return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
	37	warn "Potential libraries are '$potential_libs':\n" if $verbose;
	38
479d2113	39	my($so) = $Config{so};
479d2113	40	my($libs) = defined $Config{perllibs} ? $Config{perllibs} : $Config{libs};
f6d6199c	41	my $Config_libext = $Config{lib_ext} \|\| ".a";
	42
	43
	44	# compute $extralibs, $bsloadlibs and $ldloadlibs from
	45	# $potential_libs
	46	# this is a rewrite of Andy Dougherty's extliblist in perl
	47
	48	my(@searchpath); # from "-L/path" entries in $potential_libs
	49	my(@libpath) = split " ", $Config{'libpth'};
	50	my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
	51	my(@libs, %libs_seen);
a592ba15	52	my($fullname, @fullname);
f6d6199c	53	my($pwd) = cwd(); # from Cwd.pm
	54	my($found) = 0;
	55
a592ba15	56	foreach my $thislib (split ' ', $potential_libs) {
f6d6199c	57
	58	# Handle possible linker path arguments.
	59	if ($thislib =~ s/^(-[LR]\|-Wl,-R)//){ # save path flag type
	60	my($ptype) = $1;
	61	unless (-d $thislib){
	62	warn "$ptype$thislib ignored, directory does not exist\n"
	63	if $verbose;
	64	next;
	65	}
	66	my($rtype) = $ptype;
	67	if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) {
	68	if ($Config{'lddlflags'} =~ /-Wl,-R/) {
	69	$rtype = '-Wl,-R';
	70	} elsif ($Config{'lddlflags'} =~ /-R/) {
	71	$rtype = '-R';
	72	}
	73	}
	74	unless (File::Spec->file_name_is_absolute($thislib)) {
	75	warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
	76	$thislib = $self->catdir($pwd,$thislib);
	77	}
	78	push(@searchpath, $thislib);
	79	push(@extralibs, "$ptype$thislib");
	80	push(@ldloadlibs, "$rtype$thislib");
	81	next;
	82	}
	83
	84	# Handle possible library arguments.
	85	unless ($thislib =~ s/^-l//){
	86	warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
	87	next;
	88	}
	89
	90	my($found_lib)=0;
a592ba15	91	foreach my $thispth (@searchpath, @libpath) {
f6d6199c	92
	93	# Try to find the full name of the library. We need this to
	94	# determine whether it's a dynamically-loadable library or not.
	95	# This tends to be subject to various os-specific quirks.
	96	# For gcc-2.6.2 on linux (March 1995), DLD can not load
	97	# .sa libraries, with the exception of libm.sa, so we
	98	# deliberately skip them.
	99	if (@fullname =
	100	$self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){
	101	# Take care that libfoo.so.10 wins against libfoo.so.9.
	102	# Compare two libraries to find the most recent version
	103	# number. E.g. if you have libfoo.so.9.0.7 and
	104	# libfoo.so.10.1, first convert all digits into two
	105	# decimal places. Then we'll add ".00" to the shorter
	106	# strings so that we're comparing strings of equal length
	107	# Thus we'll compare libfoo.so.09.07.00 with
	108	# libfoo.so.10.01.00. Some libraries might have letters
	109	# in the version. We don't know what they mean, but will
	110	# try to skip them gracefully -- we'll set any letter to
	111	# '0'. Finally, sort in reverse so we can take the
	112	# first element.
	113
	114	#TODO: iterate through the directory instead of sorting
	115
	116	$fullname = "$thispth/" .
	117	(sort { my($ma) = $a;
	118	my($mb) = $b;
	119	$ma =~ tr/A-Za-z/0/s;
	120	$ma =~ s/\b(\d)\b/0$1/g;
	121	$mb =~ tr/A-Za-z/0/s;
	122	$mb =~ s/\b(\d)\b/0$1/g;
	123	while (length($ma) < length($mb)) { $ma .= ".00"; }
	124	while (length($mb) < length($ma)) { $mb .= ".00"; }
	125	# Comparison deliberately backwards
	126	$mb cmp $ma;} @fullname)[0];
	127	} elsif (-f ($fullname="$thispth/lib$thislib.$so")
	128	&& (($Config{'dlsrc'} ne "dl_dld.xs") \|\| ($thislib eq "m"))){
	129	} elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext")
2e65e370	130	&& ($Config{'archname'} !~ /RM\d\d\d-svr4/)
f6d6199c	131	&& ($thislib .= "_s") ){ # we must explicitly use _s version
	132	} elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
	133	} elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
dd0810f9	134	} elsif (-f ($fullname="$thispth/lib$thislib.dll$Config_libext")){
f6d6199c	135	} elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
	136	} elsif ($^O eq 'dgux'
	137	&& -l ($fullname="$thispth/lib$thislib$Config_libext")
	138	&& readlink($fullname) =~ /^elink:/s) {
	139	# Some of DG's libraries look like misconnected symbolic
	140	# links, but development tools can follow them. (They
	141	# look like this:
	142	#
	143	# libm.a -> elink:${SDE_PATH:-/usr}/sde/\
	144	# ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
	145	#
	146	# , the compilation tools expand the environment variables.)
	147	} else {
	148	warn "$thislib not found in $thispth\n" if $verbose;
	149	next;
	150	}
	151	warn "'-l$thislib' found at $fullname\n" if $verbose;
f6d6199c	152	push @libs, $fullname unless $libs_seen{$fullname}++;
	153	$found++;
	154	$found_lib++;
	155
	156	# Now update library lists
	157
	158	# what do we know about this library...
	159	my $is_dyna = ($fullname !~ /\Q$Config_libext\E\z/);
479d2113	160	my $in_perl = ($libs =~ /\B-l\Q${thislib}\E\b/s);
f6d6199c	161
2530b651	162	# include the path to the lib once in the dynamic linker path
	163	# but only if it is a dynamic lib and not in Perl itself
	164	my($fullnamedir) = dirname($fullname);
	165	push @ld_run_path, $fullnamedir
	166	if $is_dyna && !$in_perl &&
	167	!$ld_run_path_seen{$fullnamedir}++;
	168
f6d6199c	169	# Do not add it into the list if it is already linked in
	170	# with the main perl executable.
	171	# We have to special-case the NeXT, because math and ndbm
	172	# are both in libsys_s
	173	unless ($in_perl \|\|
	174	($Config{'osname'} eq 'next' &&
	175	($thislib eq 'm' \|\| $thislib eq 'ndbm')) ){
	176	push(@extralibs, "-l$thislib");
	177	}
	178
	179	# We might be able to load this archive file dynamically
	180	if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
	181	\|\| ($Config{'dlsrc'} =~ /dl_dld/) )
	182	{
	183	# We push -l$thislib instead of $fullname because
	184	# it avoids hardwiring a fixed path into the .bs file.
	185	# Mkbootstrap will automatically add dl_findfile() to
	186	# the .bs file if it sees a name in the -l format.
	187	# USE THIS, when dl_findfile() is fixed:
	188	# push(@bsloadlibs, "-l$thislib");
	189	# OLD USE WAS while checking results against old_extliblist
	190	push(@bsloadlibs, "$fullname");
	191	} else {
	192	if ($is_dyna){
	193	# For SunOS4, do not add in this shared library if
	194	# it is already linked in the main perl executable
	195	push(@ldloadlibs, "-l$thislib")
	196	unless ($in_perl and $^O eq 'sunos');
	197	} else {
	198	push(@ldloadlibs, "-l$thislib");
	199	}
	200	}
	201	last; # found one here so don't bother looking further
	202	}
	203	warn "Note (probably harmless): "
	204	."No library found for -l$thislib\n"
	205	unless $found_lib>0;
	206	}
	207
	208	unless( $found ) {
	209	return ('','','','', ($give_libs ? \@libs : ()));
	210	}
	211	else {
	212	return ("@extralibs", "@bsloadlibs", "@ldloadlibs",
	213	join(":",@ld_run_path), ($give_libs ? \@libs : ()));
	214	}
	215	}
	216
	217	sub _win32_ext {
	218
	219	require Text::ParseWords;
	220
	221	my($self, $potential_libs, $verbose, $give_libs) = @_;
479d2113	222	$verbose \|\|= 0;
f6d6199c	223
	224	# If user did not supply a list, we punt.
	225	# (caller should probably use the list in $Config{libs})
	226	return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
	227
	228	my $cc = $Config{cc};
76df5e8f	229	my $VC = $cc =~ /^cl/i;
	230	my $BC = $cc =~ /^bcc/i;
	231	my $GC = $cc =~ /^gcc/i;
f6d6199c	232	my $so = $Config{'so'};
	233	my $libs = $Config{'perllibs'};
	234	my $libpth = $Config{'libpth'};
	235	my $libext = $Config{'lib_ext'} \|\| ".lib";
	236	my(@libs, %libs_seen);
	237
	238	if ($libs and $potential_libs !~ /:nodefault/i) {
	239	# If Config.pm defines a set of default libs, we always
	240	# tack them on to the user-supplied list, unless the user
	241	# specified :nodefault
	242
	243	$potential_libs .= " " if $potential_libs;
	244	$potential_libs .= $libs;
	245	}
	246	warn "Potential libraries are '$potential_libs':\n" if $verbose;
	247
	248	# normalize to forward slashes
	249	$libpth =~ s,\\,/,g;
	250	$potential_libs =~ s,\\,/,g;
	251
	252	# compute $extralibs from $potential_libs
	253
	254	my @searchpath; # from "-L/path" in $potential_libs
	255	my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth);
	256	my @extralibs;
	257	my $pwd = cwd(); # from Cwd.pm
	258	my $lib = '';
	259	my $found = 0;
	260	my $search = 1;
a592ba15	261	my($fullname);
f6d6199c	262
	263	# add "$Config{installarchlib}/CORE" to default search path
	264	push @libpath, "$Config{installarchlib}/CORE";
	265
	266	if ($VC and exists $ENV{LIB} and $ENV{LIB}) {
	267	push @libpath, split /;/, $ENV{LIB};
	268	}
	269
	270	foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){
	271
a592ba15	272	my $thislib = $_;
f6d6199c	273
	274	# see if entry is a flag
	275	if (/^:\w+$/) {
	276	$search = 0 if lc eq ':nosearch';
	277	$search = 1 if lc eq ':search';
	278	warn "Ignoring unknown flag '$thislib'\n"
	279	if $verbose and !/^:(no)?(search\|default)$/i;
	280	next;
	281	}
	282
	283	# if searching is disabled, do compiler-specific translations
	284	unless ($search) {
	285	s/^-l(.+)$/$1.lib/ unless $GC;
	286	s/^-L/-libpath:/ if $VC;
	287	push(@extralibs, $_);
	288	$found++;
	289	next;
	290	}
	291
	292	# handle possible linker path arguments
	293	if (s/^-L// and not -d) {
	294	warn "$thislib ignored, directory does not exist\n"
	295	if $verbose;
	296	next;
	297	}
	298	elsif (-d) {
	299	unless (File::Spec->file_name_is_absolute($_)) {
	300	warn "Warning: '$thislib' changed to '-L$pwd/$_'\n";
	301	$_ = $self->catdir($pwd,$_);
	302	}
	303	push(@searchpath, $_);
	304	next;
	305	}
	306
	307	# handle possible library arguments
	308	if (s/^-l// and $GC and !/^lib/i) {
	309	$_ = "lib$_";
	310	}
	311	$_ .= $libext if !/\Q$libext\E$/i;
	312
	313	my $secondpass = 0;
	314	LOOKAGAIN:
	315
	316	# look for the file itself
	317	if (-f) {
	318	warn "'$thislib' found as '$_'\n" if $verbose;
	319	$found++;
	320	push(@extralibs, $_);
	321	next;
	322	}
	323
	324	my $found_lib = 0;
a592ba15	325	foreach my $thispth (@searchpath, @libpath){
f6d6199c	326	unless (-f ($fullname="$thispth\\$_")) {
	327	warn "'$thislib' not found as '$fullname'\n" if $verbose;
	328	next;
	329	}
	330	warn "'$thislib' found as '$fullname'\n" if $verbose;
	331	$found++;
	332	$found_lib++;
	333	push(@extralibs, $fullname);
	334	push @libs, $fullname unless $libs_seen{$fullname}++;
	335	last;
	336	}
	337
	338	# do another pass with (or without) leading 'lib' if they used -l
	339	if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) {
	340	if ($GC) {
	341	goto LOOKAGAIN if s/^lib//i;
	342	}
	343	elsif (!/^lib/i) {
	344	$_ = "lib$_";
	345	goto LOOKAGAIN;
	346	}
	347	}
	348
	349	# give up
	350	warn "Note (probably harmless): "
479d2113	351	."No library found for $thislib\n"
f6d6199c	352	unless $found_lib>0;
	353
	354	}
	355
	356	return ('','','','', ($give_libs ? \@libs : ())) unless $found;
	357
	358	# make sure paths with spaces are properly quoted
	359	@extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
	360	@libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs;
	361	$lib = join(' ',@extralibs);
	362
	363	# normalize back to backward slashes (to help braindead tools)
	364	# XXX this may break equally braindead GNU tools that don't understand
	365	# backslashes, either. Seems like one can't win here. Cursed be CP/M.
	366	$lib =~ s,/,\\,g;
	367
	368	warn "Result: $lib\n" if $verbose;
	369	wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib;
	370	}
	371
	372
	373	sub _vms_ext {
a592ba15	374	my($self, $potential_libs, $verbose, $give_libs) = @_;
479d2113	375	$verbose \|\|= 0;
479d2113	376
f6d6199c	377	my(@crtls,$crtlstr);
277189c8	378	@crtls = ( ($Config{'ldflags'} =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
f6d6199c	379	. 'PerlShr/Share' );
	380	push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
	381	push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
	382	# In general, we pass through the basic libraries from %Config unchanged.
	383	# The one exception is that if we're building in the Perl source tree, and
	384	# a library spec could be resolved via a logical name, we go to some trouble
	385	# to insure that the copy in the local tree is used, rather than one to
	386	# which a system-wide logical may point.
	387	if ($self->{PERL_SRC}) {
a592ba15	388	my($locspec,$type);
a592ba15	389	foreach my $lib (@crtls) {
277189c8	390	if (($locspec,$type) = $lib =~ m{^([\w\$-]+)(/\w+)?} and $locspec =~ /perl/i) {
f6d6199c	391	if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; }
	392	elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
	393	else { $locspec .= $Config{'obj_ext'}; }
	394	$locspec = $self->catfile($self->{PERL_SRC},$locspec);
	395	$lib = "$locspec$type" if -e $locspec;
	396	}
	397	}
	398	}
	399	$crtlstr = @crtls ? join(' ',@crtls) : '';
	400
	401	unless ($potential_libs) {
	402	warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
	403	return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
	404	}
	405
a592ba15	406	my(%found,@fndlibs,$ldlib);
f6d6199c	407	my $cwd = cwd();
f6d6199c	408	my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
479d2113	409	# List of common Unix library names and their VMS equivalents
479d2113	410	# (VMS equivalent of '' indicates that the library is automatically
f6d6199c	411	# searched by the linker, and should be skipped here.)
	412	my(@flibs, %libs_seen);
	413	my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
	414	'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
	415	'socket' => '', 'X11' => 'DECW$XLIBSHR',
	416	'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
	417	'Xmu' => 'DECW$XMULIBSHR');
	418	if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
	419
	420	warn "Potential libraries are '$potential_libs'\n" if $verbose;
	421
	422	# First, sort out directories and library names in the input
a592ba15	423	my(@dirs, @libs);
a592ba15	424	foreach my $lib (split ' ',$potential_libs) {
f6d6199c	425	push(@dirs,$1), next if $lib =~ /^-L(.*)/;
	426	push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
	427	push(@dirs,$lib), next if -d $lib;
	428	push(@libs,$1), next if $lib =~ /^-l(.*)/;
	429	push(@libs,$lib);
	430	}
	431	push(@dirs,split(' ',$Config{'libpth'}));
	432
	433	# Now make sure we've got VMS-syntax absolute directory specs
	434	# (We don't, however, check whether someone's hidden a relative
	435	# path in a logical name.)
a592ba15	436	foreach my $dir (@dirs) {
f6d6199c	437	unless (-d $dir) {
	438	warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
	439	$dir = '';
	440	next;
	441	}
	442	warn "Resolving directory $dir\n" if $verbose;
	443	if (File::Spec->file_name_is_absolute($dir)) {
	444	$dir = $self->fixpath($dir,1);
	445	}
	446	else {
	447	$dir = $self->catdir($cwd,$dir);
	448	}
	449	}
	450	@dirs = grep { length($_) } @dirs;
	451	unshift(@dirs,''); # Check each $lib without additions first
	452
a592ba15	453	LIB: foreach my $lib (@libs) {
f6d6199c	454	if (exists $libmap{$lib}) {
	455	next unless length $libmap{$lib};
	456	$lib = $libmap{$lib};
	457	}
	458
a592ba15	459	my(@variants,$cand);
f6d6199c	460	my($ctype) = '';
	461
	462	# If we don't have a file type, consider it a possibly abbreviated name and
	463	# check for common variants. We try these first to grab libraries before
	464	# a like-named executable image (e.g. -lperl resolves to perlshr.exe
	465	# before perl.exe).
	466	if ($lib !~ /\.[^:>\]]*$/) {
	467	push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
	468	push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
	469	}
	470	push(@variants,$lib);
	471	warn "Looking for $lib\n" if $verbose;
a592ba15	472	foreach my $variant (@variants) {
1df8d179	473	my($fullname, $name);
1df8d179	474
a592ba15	475	foreach my $dir (@dirs) {
f6d6199c	476	my($type);
	477
	478	$name = "$dir$variant";
	479	warn "\tChecking $name\n" if $verbose > 2;
1df8d179	480	$fullname = VMS::Filespec::rmsexpand($name);
1df8d179	481	if (defined $fullname and -f $fullname) {
f6d6199c	482	# It's got its own suffix, so we'll have to figure out the type
1df8d179	483	if ($fullname =~ /(?:$so\|exe)$/i) { $type = 'SHR'; }
	484	elsif ($fullname =~ /(?:$lib_ext\|olb)$/i) { $type = 'OLB'; }
	485	elsif ($fullname =~ /(?:$obj_ext\|obj)$/i) {
f6d6199c	486	warn "Note (probably harmless): "
1df8d179	487	."Plain object file $fullname found in library list\n";
f6d6199c	488	$type = 'OBJ';
	489	}
	490	else {
	491	warn "Note (probably harmless): "
1df8d179	492	."Unknown library type for $fullname; assuming shared\n";
f6d6199c	493	$type = 'SHR';
	494	}
	495	}
1df8d179	496	elsif (-f ($fullname = VMS::Filespec::rmsexpand($name,$so)) or
1df8d179	497	-f ($fullname = VMS::Filespec::rmsexpand($name,'.exe'))) {
f6d6199c	498	$type = 'SHR';
1df8d179	499	$name = $fullname unless $fullname =~ /exe;?\d*$/i;
f6d6199c	500	}
1df8d179	501	elsif (not length($ctype) and # If we've got a lib already,
	502	# don't bother
	503	( -f ($fullname = VMS::Filespec::rmsexpand($name,$lib_ext)) or
	504	-f ($fullname = VMS::Filespec::rmsexpand($name,'.olb')))) {
f6d6199c	505	$type = 'OLB';
1df8d179	506	$name = $fullname unless $fullname =~ /olb;?\d*$/i;
f6d6199c	507	}
1df8d179	508	elsif (not length($ctype) and # If we've got a lib already,
	509	# don't bother
	510	( -f ($fullname = VMS::Filespec::rmsexpand($name,$obj_ext)) or
	511	-f ($fullname = VMS::Filespec::rmsexpand($name,'.obj')))) {
f6d6199c	512	warn "Note (probably harmless): "
1df8d179	513	."Plain object file $fullname found in library list\n";
f6d6199c	514	$type = 'OBJ';
1df8d179	515	$name = $fullname unless $fullname =~ /obj;?\d*$/i;
f6d6199c	516	}
	517	if (defined $type) {
	518	$ctype = $type; $cand = $name;
	519	last if $ctype eq 'SHR';
	520	}
	521	}
	522	if ($ctype) {
	523	# This has to precede any other CRTLs, so just make it first
	524	if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }
	525	else { push @{$found{$ctype}}, $cand; }
1df8d179	526	warn "\tFound as $cand (really $fullname), type $ctype\n"
1df8d179	527	if $verbose > 1;
f6d6199c	528	push @flibs, $name unless $libs_seen{$fullname}++;
	529	next LIB;
	530	}
	531	}
	532	warn "Note (probably harmless): "
	533	."No library found for $lib\n";
	534	}
	535
	536	push @fndlibs, @{$found{OBJ}} if exists $found{OBJ};
	537	push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
	538	push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR};
a592ba15	539	my $lib = join(' ',@fndlibs);
f6d6199c	540
	541	$ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
	542	warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
	543	wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
	544	}
	545
	546	1;