[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 5.00503;
# Broken out of MakeMaker from version 4.11

use vars qw($VERSION);
$VERSION = 1.29;

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, $give_libs) = @_;
    if ($^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) = $Config{'perllibs'};
    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, $thislib, $thispth, @fullname);
    my($pwd) = cwd(); # from Cwd.pm
    my($found) = 0;

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

	# Handle possible linker path arguments.
	if ($thislib =~ s/^(-[LR]|-Wl,-R)//){	# save path flag type
	    my($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 $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/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 $verbose;
	    my($fullnamedir) = dirname($fullname);
	    push @ld_run_path, $fullnamedir 
              unless $ld_run_path_seen{$fullnamedir}++;
	    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);

	    # 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) = @_;

    # 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		= 1 if $cc =~ /^cl/i;
    my $BC		= 1 if $cc =~ /^bcc/i;
    my $GC		= 1 if $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, $thislib, $thispth);

    # 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)){

	$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 $thispth (@searchpath, @libpath){
	    unless (-f ($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,$give_libs) = @_;
  my(@crtls,$crtlstr);
  my($dbgqual) = $self->{OPTIMIZE} || $Config{'optimize'} ||
                 $self->{CCFLAS}   || $Config{'ccflags'};
  @crtls = ( ($dbgqual =~ 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($lib,$locspec,$type);
    foreach $lib (@crtls) { 
      if (($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(@dirs,@libs,$dir,$lib,%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 there VMS equivalents
  # (VMS equivalent of '' indicates that the library is automatially
  # 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
  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 $verbose;
    if (File::Spec->file_name_is_absolute($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 $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)      { $type = 'SHR'; }
          elsif ($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";
            $type = 'SHR';
          }
        }
        elsif (-f ($test = VMS::Filespec::rmsexpand($name,$so))      or
               -f ($test = VMS::Filespec::rmsexpand($name,'.exe')))     {
          $type = 'SHR';
          $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 $ctype eq 'SHR';
        }
      }
      if ($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 $test), 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};
  $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	# $self is not a Makemaker.
	7
57b1a898	8	use 5.00503;
f6d6199c	9	# Broken out of MakeMaker from version 4.11
f6d6199c	10
57b1a898	11	use vars qw($VERSION);
69ff8adf	12	$VERSION = 1.29;
f6d6199c	13
	14	use Config;
	15	use Cwd 'cwd';
	16	use File::Basename;
	17	use File::Spec;
	18
	19	sub ext {
	20	if ($^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, $give_libs) = @_;
	27	if ($^O =~ 'os2' and $Config{perllibs}) {
	28	# Dynamic libraries are not transitive, so we may need including
	29	# the libraries linked against perl.dll again.
	30
	31	$potential_libs .= " " if $potential_libs;
	32	$potential_libs .= $Config{perllibs};
	33	}
	34	return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
	35	warn "Potential libraries are '$potential_libs':\n" if $verbose;
	36
	37	my($so) = $Config{'so'};
	38	my($libs) = $Config{'perllibs'};
	39	my $Config_libext = $Config{lib_ext} \|\| ".a";
	40
	41
	42	# compute $extralibs, $bsloadlibs and $ldloadlibs from
	43	# $potential_libs
	44	# this is a rewrite of Andy Dougherty's extliblist in perl
	45
	46	my(@searchpath); # from "-L/path" entries in $potential_libs
	47	my(@libpath) = split " ", $Config{'libpth'};
	48	my(@ldloadlibs, @bsloadlibs, @extralibs, @ld_run_path, %ld_run_path_seen);
	49	my(@libs, %libs_seen);
	50	my($fullname, $thislib, $thispth, @fullname);
	51	my($pwd) = cwd(); # from Cwd.pm
	52	my($found) = 0;
	53
	54	foreach $thislib (split ' ', $potential_libs){
	55
	56	# Handle possible linker path arguments.
	57	if ($thislib =~ s/^(-[LR]\|-Wl,-R)//){ # save path flag type
	58	my($ptype) = $1;
	59	unless (-d $thislib){
	60	warn "$ptype$thislib ignored, directory does not exist\n"
	61	if $verbose;
	62	next;
	63	}
	64	my($rtype) = $ptype;
	65	if (($ptype eq '-R') or ($ptype eq '-Wl,-R')) {
	66	if ($Config{'lddlflags'} =~ /-Wl,-R/) {
	67	$rtype = '-Wl,-R';
	68	} elsif ($Config{'lddlflags'} =~ /-R/) {
	69	$rtype = '-R';
	70	}
	71	}
	72	unless (File::Spec->file_name_is_absolute($thislib)) {
	73	warn "Warning: $ptype$thislib changed to $ptype$pwd/$thislib\n";
	74	$thislib = $self->catdir($pwd,$thislib);
	75	}
	76	push(@searchpath, $thislib);
77	push(@extralibs, "$ptype$thislib");
78	push(@ldloadlibs, "$rtype$thislib");
79	next;
80	}
81
82	# Handle possible library arguments.
83	unless ($thislib =~ s/^-l//){
84	warn "Unrecognized argument in LIBS ignored: '$thislib'\n";
85	next;
86	}
87
88	my($found_lib)=0;
89	foreach $thispth (@searchpath, @libpath){
90
91	# Try to find the full name of the library. We need this to
92	# determine whether it's a dynamically-loadable library or not.
93	# This tends to be subject to various os-specific quirks.
94	# For gcc-2.6.2 on linux (March 1995), DLD can not load
95	# .sa libraries, with the exception of libm.sa, so we
96	# deliberately skip them.
97	if (@fullname =
98	$self->lsdir($thispth,"^\Qlib$thislib.$so.\E[0-9]+")){
99	# Take care that libfoo.so.10 wins against libfoo.so.9.
100	# Compare two libraries to find the most recent version
101	# number. E.g. if you have libfoo.so.9.0.7 and
102	# libfoo.so.10.1, first convert all digits into two
103	# decimal places. Then we'll add ".00" to the shorter
104	# strings so that we're comparing strings of equal length
105	# Thus we'll compare libfoo.so.09.07.00 with
106	# libfoo.so.10.01.00. Some libraries might have letters
107	# in the version. We don't know what they mean, but will
108	# try to skip them gracefully -- we'll set any letter to
109	# '0'. Finally, sort in reverse so we can take the
110	# first element.
111
112	#TODO: iterate through the directory instead of sorting
113
114	$fullname = "$thispth/" .
115	(sort { my($ma) = $a;
116	my($mb) = $b;
117	$ma =~ tr/A-Za-z/0/s;
118	$ma =~ s/\b(\d)\b/0$1/g;
119	$mb =~ tr/A-Za-z/0/s;
120	$mb =~ s/\b(\d)\b/0$1/g;
121	while (length($ma) < length($mb)) { $ma .= ".00"; }
122	while (length($mb) < length($ma)) { $mb .= ".00"; }
123	# Comparison deliberately backwards
124	$mb cmp $ma;} @fullname)[0];
125	} elsif (-f ($fullname="$thispth/lib$thislib.$so")
126	&& (($Config{'dlsrc'} ne "dl_dld.xs") \|\| ($thislib eq "m"))){
127	} elsif (-f ($fullname="$thispth/lib${thislib}_s$Config_libext")
128	&& (! $Config{'archname'} =~ /RM\d\d\d-svr4/)
129	&& ($thislib .= "_s") ){ # we must explicitly use _s version
130	} elsif (-f ($fullname="$thispth/lib$thislib$Config_libext")){
131	} elsif (-f ($fullname="$thispth/$thislib$Config_libext")){
132	} elsif (-f ($fullname="$thispth/Slib$thislib$Config_libext")){
133	} elsif ($^O eq 'dgux'
134	&& -l ($fullname="$thispth/lib$thislib$Config_libext")
135	&& readlink($fullname) =~ /^elink:/s) {
136	# Some of DG's libraries look like misconnected symbolic
137	# links, but development tools can follow them. (They
138	# look like this:
139	#
140	# libm.a -> elink:${SDE_PATH:-/usr}/sde/\
141	# ${TARGET_BINARY_INTERFACE:-m88kdgux}/usr/lib/libm.a
142	#
143	# , the compilation tools expand the environment variables.)
144	} else {
145	warn "$thislib not found in $thispth\n" if $verbose;
146	next;
147	}
148	warn "'-l$thislib' found at $fullname\n" if $verbose;
149	my($fullnamedir) = dirname($fullname);
150	push @ld_run_path, $fullnamedir
151	unless $ld_run_path_seen{$fullnamedir}++;
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/);
160	my $in_perl = ($libs =~ /\B-l\Q$ {thislib}\E\b/s);
161
162	# Do not add it into the list if it is already linked in
163	# with the main perl executable.
164	# We have to special-case the NeXT, because math and ndbm
165	# are both in libsys_s
166	unless ($in_perl \|\|
167	($Config{'osname'} eq 'next' &&
168	($thislib eq 'm' \|\| $thislib eq 'ndbm')) ){
169	push(@extralibs, "-l$thislib");
170	}
171
172	# We might be able to load this archive file dynamically
173	if ( ($Config{'dlsrc'} =~ /dl_next/ && $Config{'osvers'} lt '4_0')
174	\|\| ($Config{'dlsrc'} =~ /dl_dld/) )
175	{
176	# We push -l$thislib instead of $fullname because
177	# it avoids hardwiring a fixed path into the .bs file.
178	# Mkbootstrap will automatically add dl_findfile() to
179	# the .bs file if it sees a name in the -l format.
180	# USE THIS, when dl_findfile() is fixed:
181	# push(@bsloadlibs, "-l$thislib");
182	# OLD USE WAS while checking results against old_extliblist
183	push(@bsloadlibs, "$fullname");
184	} else {
185	if ($is_dyna){
186	# For SunOS4, do not add in this shared library if
187	# it is already linked in the main perl executable
188	push(@ldloadlibs, "-l$thislib")
189	unless ($in_perl and $^O eq 'sunos');
190	} else {
191	push(@ldloadlibs, "-l$thislib");
192	}
193	}
194	last; # found one here so don't bother looking further
195	}
196	warn "Note (probably harmless): "
197	."No library found for -l$thislib\n"
198	unless $found_lib>0;
199	}
200
201	unless( $found ) {
202	return ('','','','', ($give_libs ? \@libs : ()));
203	}
204	else {
205	return ("@extralibs", "@bsloadlibs", "@ldloadlibs",
206	join(":",@ld_run_path), ($give_libs ? \@libs : ()));
207	}
208	}
209
210	sub _win32_ext {
211
212	require Text::ParseWords;
213
214	my($self, $potential_libs, $verbose, $give_libs) = @_;
215
216	# If user did not supply a list, we punt.
217	# (caller should probably use the list in $Config{libs})
218	return ("", "", "", "", ($give_libs ? [] : ())) unless $potential_libs;
219
220	my $cc = $Config{cc};
221	my $VC = 1 if $cc =~ /^cl/i;
222	my $BC = 1 if $cc =~ /^bcc/i;
223	my $GC = 1 if $cc =~ /^gcc/i;
224	my $so = $Config{'so'};
225	my $libs = $Config{'perllibs'};
226	my $libpth = $Config{'libpth'};
227	my $libext = $Config{'lib_ext'} \|\| ".lib";
228	my(@libs, %libs_seen);
229
230	if ($libs and $potential_libs !~ /:nodefault/i) {
231	# If Config.pm defines a set of default libs, we always
232	# tack them on to the user-supplied list, unless the user
233	# specified :nodefault
234
235	$potential_libs .= " " if $potential_libs;
236	$potential_libs .= $libs;
237	}
238	warn "Potential libraries are '$potential_libs':\n" if $verbose;
239
240	# normalize to forward slashes
241	$libpth =~ s,\\,/,g;
242	$potential_libs =~ s,\\,/,g;
243
244	# compute $extralibs from $potential_libs
245
246	my @searchpath; # from "-L/path" in $potential_libs
247	my @libpath = Text::ParseWords::quotewords('\s+', 0, $libpth);
248	my @extralibs;
249	my $pwd = cwd(); # from Cwd.pm
250	my $lib = '';
251	my $found = 0;
252	my $search = 1;
253	my($fullname, $thislib, $thispth);
254
255	# add "$Config{installarchlib}/CORE" to default search path
256	push @libpath, "$Config{installarchlib}/CORE";
257
258	if ($VC and exists $ENV{LIB} and $ENV{LIB}) {
259	push @libpath, split /;/, $ENV{LIB};
260	}
261
262	foreach (Text::ParseWords::quotewords('\s+', 0, $potential_libs)){
263
264	$thislib = $_;
265
266	# see if entry is a flag
267	if (/^:\w+$/) {
268	$search = 0 if lc eq ':nosearch';
269	$search = 1 if lc eq ':search';
270	warn "Ignoring unknown flag '$thislib'\n"
271	if $verbose and !/^:(no)?(search\|default)$/i;
272	next;
273	}
274
275	# if searching is disabled, do compiler-specific translations
276	unless ($search) {
277	s/^-l(.+)$/$1.lib/ unless $GC;
278	s/^-L/-libpath:/ if $VC;
279	push(@extralibs, $_);
280	$found++;
281	next;
282	}
283
284	# handle possible linker path arguments
285	if (s/^-L// and not -d) {
286	warn "$thislib ignored, directory does not exist\n"
287	if $verbose;
288	next;
289	}
290	elsif (-d) {
291	unless (File::Spec->file_name_is_absolute($_)) {
292	warn "Warning: '$thislib' changed to '-L$pwd/$_'\n";
293	$_ = $self->catdir($pwd,$_);
294	}
295	push(@searchpath, $_);
296	next;
297	}
298
299	# handle possible library arguments
300	if (s/^-l// and $GC and !/^lib/i) {
301	$_ = "lib$_";
302	}
303	$_ .= $libext if !/\Q$libext\E$/i;
304
305	my $secondpass = 0;
306	LOOKAGAIN:
307
308	# look for the file itself
309	if (-f) {
310	warn "'$thislib' found as '$_'\n" if $verbose;
311	$found++;
312	push(@extralibs, $_);
313	next;
314	}
315
316	my $found_lib = 0;
317	foreach $thispth (@searchpath, @libpath){
318	unless (-f ($fullname="$thispth\\$_")) {
319	warn "'$thislib' not found as '$fullname'\n" if $verbose;
320	next;
321	}
322	warn "'$thislib' found as '$fullname'\n" if $verbose;
323	$found++;
324	$found_lib++;
325	push(@extralibs, $fullname);
326	push @libs, $fullname unless $libs_seen{$fullname}++;
327	last;
328	}
329
330	# do another pass with (or without) leading 'lib' if they used -l
331	if (!$found_lib and $thislib =~ /^-l/ and !$secondpass++) {
332	if ($GC) {
333	goto LOOKAGAIN if s/^lib//i;
334	}
335	elsif (!/^lib/i) {
336	$_ = "lib$_";
337	goto LOOKAGAIN;
338	}
339	}
340
341	# give up
342	warn "Note (probably harmless): "
343	."No library found for '$thislib'\n"
344	unless $found_lib>0;
345
346	}
347
348	return ('','','','', ($give_libs ? \@libs : ())) unless $found;
349
350	# make sure paths with spaces are properly quoted
351	@extralibs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @extralibs;
352	@libs = map { (/\s/ && !/^".*"$/) ? qq["$_"] : $_ } @libs;
353	$lib = join(' ',@extralibs);
354
355	# normalize back to backward slashes (to help braindead tools)
356	# XXX this may break equally braindead GNU tools that don't understand
357	# backslashes, either. Seems like one can't win here. Cursed be CP/M.
358	$lib =~ s,/,\\,g;
359
360	warn "Result: $lib\n" if $verbose;
361	wantarray ? ($lib, '', $lib, '', ($give_libs ? \@libs : ())) : $lib;
362	}
363
364
365	sub _vms_ext {
366	my($self, $potential_libs,$verbose,$give_libs) = @_;
367	my(@crtls,$crtlstr);
368	my($dbgqual) = $self->{OPTIMIZE} \|\| $Config{'optimize'} \|\|
369	$self->{CCFLAS} \|\| $Config{'ccflags'};
370	@crtls = ( ($dbgqual =~ m-/Debug-i ? $Config{'dbgprefix'} : '')
371	. 'PerlShr/Share' );
372	push(@crtls, grep { not /\(/ } split /\s+/, $Config{'perllibs'});
373	push(@crtls, grep { not /\(/ } split /\s+/, $Config{'libc'});
374	# In general, we pass through the basic libraries from %Config unchanged.
375	# The one exception is that if we're building in the Perl source tree, and
376	# a library spec could be resolved via a logical name, we go to some trouble
377	# to insure that the copy in the local tree is used, rather than one to
378	# which a system-wide logical may point.
379	if ($self->{PERL_SRC}) {
380	my($lib,$locspec,$type);
381	foreach $lib (@crtls) {
382	if (($locspec,$type) = $lib =~ m-^([\w$\-]+)(/\w+)?- and $locspec =~ /perl/i) {
383	if (lc $type eq '/share') { $locspec .= $Config{'exe_ext'}; }
384	elsif (lc $type eq '/library') { $locspec .= $Config{'lib_ext'}; }
385	else { $locspec .= $Config{'obj_ext'}; }
386	$locspec = $self->catfile($self->{PERL_SRC},$locspec);
387	$lib = "$locspec$type" if -e $locspec;
388	}
389	}
390	}
391	$crtlstr = @crtls ? join(' ',@crtls) : '';
392
393	unless ($potential_libs) {
394	warn "Result:\n\tEXTRALIBS: \n\tLDLOADLIBS: $crtlstr\n" if $verbose;
395	return ('', '', $crtlstr, '', ($give_libs ? [] : ()));
396	}
397
398	my(@dirs,@libs,$dir,$lib,%found,@fndlibs,$ldlib);
399	my $cwd = cwd();
400	my($so,$lib_ext,$obj_ext) = @Config{'so','lib_ext','obj_ext'};
401	# List of common Unix library names and there VMS equivalents
402	# (VMS equivalent of '' indicates that the library is automatially
403	# searched by the linker, and should be skipped here.)
404	my(@flibs, %libs_seen);
405	my %libmap = ( 'm' => '', 'f77' => '', 'F77' => '', 'V77' => '', 'c' => '',
406	'malloc' => '', 'crypt' => '', 'resolv' => '', 'c_s' => '',
407	'socket' => '', 'X11' => 'DECW$XLIBSHR',
408	'Xt' => 'DECW$XTSHR', 'Xm' => 'DECW$XMLIBSHR',
409	'Xmu' => 'DECW$XMULIBSHR');
410	if ($Config{'vms_cc_type'} ne 'decc') { $libmap{'curses'} = 'VAXCCURSE'; }
411
412	warn "Potential libraries are '$potential_libs'\n" if $verbose;
413
414	# First, sort out directories and library names in the input
415	foreach $lib (split ' ',$potential_libs) {
416	push(@dirs,$1), next if $lib =~ /^-L(.*)/;
417	push(@dirs,$lib), next if $lib =~ /[:>\]]$/;
418	push(@dirs,$lib), next if -d $lib;
419	push(@libs,$1), next if $lib =~ /^-l(.*)/;
420	push(@libs,$lib);
421	}
422	push(@dirs,split(' ',$Config{'libpth'}));
423
424	# Now make sure we've got VMS-syntax absolute directory specs
425	# (We don't, however, check whether someone's hidden a relative
426	# path in a logical name.)
427	foreach $dir (@dirs) {
428	unless (-d $dir) {
429	warn "Skipping nonexistent Directory $dir\n" if $verbose > 1;
430	$dir = '';
431	next;
432	}
433	warn "Resolving directory $dir\n" if $verbose;
434	if (File::Spec->file_name_is_absolute($dir)) {
435	$dir = $self->fixpath($dir,1);
436	}
437	else {
438	$dir = $self->catdir($cwd,$dir);
439	}
440	}
441	@dirs = grep { length($_) } @dirs;
442	unshift(@dirs,''); # Check each $lib without additions first
443
444	LIB: foreach $lib (@libs) {
445	if (exists $libmap{$lib}) {
446	next unless length $libmap{$lib};
447	$lib = $libmap{$lib};
448	}
449
450	my(@variants,$variant,$name,$test,$cand);
451	my($ctype) = '';
452
453	# If we don't have a file type, consider it a possibly abbreviated name and
454	# check for common variants. We try these first to grab libraries before
455	# a like-named executable image (e.g. -lperl resolves to perlshr.exe
456	# before perl.exe).
457	if ($lib !~ /\.[^:>\]]*$/) {
458	push(@variants,"${lib}shr","${lib}rtl","${lib}lib");
459	push(@variants,"lib$lib") if $lib !~ /[:>\]]/;
460	}
461	push(@variants,$lib);
462	warn "Looking for $lib\n" if $verbose;
463	foreach $variant (@variants) {
464	foreach $dir (@dirs) {
465	my($type);
466
467	$name = "$dir$variant";
468	warn "\tChecking $name\n" if $verbose > 2;
469	if (-f ($test = VMS::Filespec::rmsexpand($name))) {
470	# It's got its own suffix, so we'll have to figure out the type
471	if ($test =~ /(?:$so\|exe)$/i) { $type = 'SHR'; }
472	elsif ($test =~ /(?:$lib_ext\|olb)$/i) { $type = 'OLB'; }
473	elsif ($test =~ /(?:$obj_ext\|obj)$/i) {
474	warn "Note (probably harmless): "
475	."Plain object file $test found in library list\n";
476	$type = 'OBJ';
477	}
478	else {
479	warn "Note (probably harmless): "
480	."Unknown library type for $test; assuming shared\n";
481	$type = 'SHR';
482	}
483	}
484	elsif (-f ($test = VMS::Filespec::rmsexpand($name,$so)) or
485	-f ($test = VMS::Filespec::rmsexpand($name,'.exe'))) {
486	$type = 'SHR';
487	$name = $test unless $test =~ /exe;?\d*$/i;
488	}
489	elsif (not length($ctype) and # If we've got a lib already, don't bother
490	( -f ($test = VMS::Filespec::rmsexpand($name,$lib_ext)) or
491	-f ($test = VMS::Filespec::rmsexpand($name,'.olb')))) {
492	$type = 'OLB';
493	$name = $test unless $test =~ /olb;?\d*$/i;
494	}
495	elsif (not length($ctype) and # If we've got a lib already, don't bother
496	( -f ($test = VMS::Filespec::rmsexpand($name,$obj_ext)) or
497	-f ($test = VMS::Filespec::rmsexpand($name,'.obj')))) {
498	warn "Note (probably harmless): "
499	."Plain object file $test found in library list\n";
500	$type = 'OBJ';
501	$name = $test unless $test =~ /obj;?\d*$/i;
502	}
503	if (defined $type) {
504	$ctype = $type; $cand = $name;
505	last if $ctype eq 'SHR';
506	}
507	}
508	if ($ctype) {
509	# This has to precede any other CRTLs, so just make it first
510	if ($cand eq 'VAXCCURSE') { unshift @{$found{$ctype}}, $cand; }
511	else { push @{$found{$ctype}}, $cand; }
512	warn "\tFound as $cand (really $test), type $ctype\n" if $verbose > 1;
513	push @flibs, $name unless $libs_seen{$fullname}++;
514	next LIB;
515	}
516	}
517	warn "Note (probably harmless): "
518	."No library found for $lib\n";
519	}
520
521	push @fndlibs, @{$found{OBJ}} if exists $found{OBJ};
522	push @fndlibs, map { "$_/Library" } @{$found{OLB}} if exists $found{OLB};
523	push @fndlibs, map { "$_/Share" } @{$found{SHR}} if exists $found{SHR};
524	$lib = join(' ',@fndlibs);
525
526	$ldlib = $crtlstr ? "$lib $crtlstr" : $lib;
527	warn "Result:\n\tEXTRALIBS: $lib\n\tLDLOADLIBS: $ldlib\n" if $verbose;
528	wantarray ? ($lib, '', $ldlib, '', ($give_libs ? \@flibs : ())) : $lib;
529	}
530
531	1;