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# $OpenBSD: Library.pm,v 1.3 2014/03/31 13:44:04 ajacoutot Exp $
# Copyright (c) 2007-2010 Steven Mestdagh <steven@openbsd.org>
# Copyright (c) 2012 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
use feature qw(say);
use LT::LaFile;
package LT::LaFile;
sub link
{
return LT::Linker::LaFile->new->link(@_);
}
package LT::Linker::LaFile;
our @ISA = qw(LT::Linker);
use LT::Util;
use LT::Trace;
use File::Basename;
sub link
{
my ($linker, $self, $ltprog, $ltconfig, $la, $fname, $odir, $shared,
$objs, $dirs, $libs, $deplibs, $libdirs, $parser, $gp) = @_;
tsay {"creating link command for library (linked ",
($shared) ? "dynamically" : "statically", ")"};
my $RPdirs = $self->{RPdirs};
my @libflags;
my @cmd;
my $dst = ($odir eq '.') ? "$ltdir/$fname" : "$odir/$ltdir/$fname";
if ($la =~ m/\.a$/) {
# probably just a convenience library
$dst = ($odir eq '.') ? "$fname" : "$odir/$fname";
}
my $symlinkdir = $ltdir;
if ($odir ne '.') {
$symlinkdir = "$odir/$ltdir";
}
mkdir $symlinkdir if ! -d $symlinkdir;
my ($staticlibs, $finalorderedlibs, $args) =
$linker->common1($parser, $gp, $deplibs, $libdirs, $dirs, $libs);
# static linking
if (!$shared) {
@cmd = ('ar', 'cru', $dst);
foreach my $a (@$staticlibs) {
if ($a =~ m/\.a$/ && $a !~ m/_pic\.a/) {
# extract objects from archive
my $libfile = basename($a);
my $xdir = "$odir/$ltdir/${la}x/$libfile";
LT::Archive->extract($xdir, $a);
my @kobjs = LT::Archive->get_objlist($a);
map { $_ = "$xdir/$_"; } @kobjs;
push @libflags, @kobjs;
}
}
foreach my $k (@$finalorderedlibs) {
my $l = $libs->{$k};
# XXX improve test
# this has to be done probably only with
# convenience libraries
next if !defined $l->{lafile};
my $lainfo = LT::LaFile->parse($l->{lafile});
next if ($lainfo->stringize('dlname') ne '');
$l->resolve_library($dirs, 0, 0, ref($self));
my $a = $l->{fullpath};
if ($a =~ m/\.a$/ && $a !~ m/_pic\.a/) {
# extract objects from archive
my $libfile = basename $a;
my $xdir = "$odir/$ltdir/${la}x/$libfile";
LT::Archive->extract($xdir, $a);
my @kobjs = LT::Archive->get_objlist($a);
map { $_ = "$xdir/$_"; } @kobjs;
push @libflags, @kobjs;
}
}
push @cmd, @libflags if @libflags;
push @cmd, @$objs if @$objs;
LT::Exec->link(@cmd);
LT::Exec->link('ranlib', $dst);
return;
}
my $tmp = [];
while (my $k = shift @$finalorderedlibs) {
my $l = $libs->{$k};
$l->resolve_library($dirs, 1, $gp->static, ref($self));
if ($l->{dropped}) {
# remove library if dependency on it has been dropped
delete $libs->{$k};
} else {
push(@$tmp, $k);
}
}
$finalorderedlibs = $tmp;
my @libobjects = values %$libs;
tsay {"libs:\n", join("\n", (keys %$libs))};
tsay {"libfiles:\n",
join("\n", map { $_->{fullpath}//'UNDEF' } @libobjects) };
$linker->create_symlinks($symlinkdir, $libs);
my $prev_was_archive = 0;
my $libcounter = 0;
foreach my $k (@$finalorderedlibs) {
my $a = $libs->{$k}->{fullpath} || die "Link error: $k not found in \$libs\n";
if ($a =~ m/\.a$/) {
# don't make a -lfoo out of a static library
push @libflags, '-Wl,-whole-archive' unless $prev_was_archive;
push @libflags, $a;
if ($libcounter == @$finalorderedlibs - 1) {
push @libflags, '-Wl,-no-whole-archive';
}
$prev_was_archive = 1;
} else {
push @libflags, '-Wl,-no-whole-archive' if $prev_was_archive;
$prev_was_archive = 0;
push @libflags, $linker->infer_libparameter($a, $k);
}
$libcounter++;
}
$libdirs = reverse_zap_duplicates_ref($libdirs);
# add libdirs to rpath if they are not in standard lib path
for my $l (@$libdirs) {
if (!LT::OSConfig->is_search_dir($l)) {
push @$RPdirs, $l;
}
}
$RPdirs = reverse_zap_duplicates_ref($RPdirs) if $RPdirs;
my @linkeropts = ();
if (!$ltconfig->noshared) {
for my $d (@$RPdirs) {
push(@linkeropts, '-rpath', $d);
}
}
@cmd = @$ltprog;
push @cmd, $ltconfig->sharedflag, @{$ltconfig->picflags};
push @cmd, '-o', $dst;
push @cmd, '-pthread' if $parser->{pthread};
push @cmd, @$args if $args;
push @cmd, @$objs if @$objs;
push @cmd, '-Wl,-whole-archive', @$staticlibs, '-Wl,-no-whole-archive'
if @$staticlibs;
push @cmd, "-L$symlinkdir", @libflags if @libflags;
my @e = $linker->export_symbols($ltconfig,
"$odir/$ltdir/$la", $gp, @$objs, @$staticlibs);
push(@cmd, join(',', "-Wl", @e)) if @e;
push @cmd, join(',', "-Wl", @linkeropts) if @linkeropts;
LT::Exec->link(@cmd);
}
1;
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