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 $VERSION = 6.56;
use Config;
use Cwd 'cwd';
use File::Basename;
use File::Spec;
sub ext {
if ($^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;