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|
eval '(exit $?0)' && eval 'exec perl -S $0 ${1+"$@"}'
& eval 'exec perl -S $0 $argv:q'
if 0;
# $Id$
#
# Drop-in replacement for "ld" that supports munching.
#
# The first three lines above let this script run without specifying the
# full path to perl, as long as it is in the user's PATH.
# Taken from perlrun man page.
$usage = "usage: $0 [-? | [[-c <compile>] [-m <munch>] [-n <nm>]] [-f]]]\n";
####
#### process command line args
####
while ( $#ARGV >= 0 && $ARGV[0] =~ /^-/ ) {
if ( $ARGV[0] eq '-c' ) {
if ( $ARGV[1] !~ /^[-].+$/ ) {
$compile = $ARGV[1]; shift;
} else {
print STDERR "$0: must provide argument for -c option\n";
die $usage;
}
} elsif ( $ARGV[0] eq '-m' ) {
if ( $ARGV[1] !~ /^[-].+$/ ) {
$munch = $ARGV[1]; shift;
} else {
print STDERR "$0: must provide argument for -m option\n";
die $usage;
}
} elsif ( $ARGV[0] eq '-n' ) {
if ( $ARGV[1] !~ /^[-].+$/ ) {
$nm = $ARGV[1]; shift;
} else {
print STDERR "$0: must provide argument for -n option\n";
die $usage;
}
} elsif ( $ARGV[0] eq '-?' ) {
print "$usage";
exit;
} else {
warn "$0: unknown option $ARGV[0]\n";
die $usage;
}
shift;
}
####
#### Save link command, i.e., current @ARGV, for use below.
####
@args = @ARGV;
####
#### Find full path to each library.
####
@libDirs = ();
$current_dir_in_libDirs = 0;
@libs = ();
@objs = '';
foreach $arg (@ARGV) {
if ($arg =~ /-L([\S]+)/) {
($dir = $1) =~ s%/+$%%; #### trim any trailing slashes
push (@libDirs, $dir);
$current_dir_in_libDirs = 1 if $dir eq '.';
} elsif ($arg =~ /-l([\S]+)/) {
push (@libs, $1);
} elsif ($arg =~ /\.o$/) {
push (@objs, $arg);
}
}
#### Add . to libDirs if it doesn't already have it.
push (@libDirs, ".") unless $current_dir_in_libDirs;
foreach $lib (@libs) {
foreach $libDir (@libDirs) {
if (-e "$libDir/lib$lib.a") {
$full_path{$lib} = "$libDir/lib$lib.a";
last;
}
}
}
####
#### Set up signal handler.
####
$done = 0;
$SIG{'HUP'} = $SIG{'INT'} = $SIG{'QUIT'} = $SIG{'TERM'} = 'cleanup';
####
#### Munch, if $munch is non-null.
####
if ($munch) {
$munch_objs = join (' ', @objs);
$munch_libs = join (' ', values %full_path);
open (MUNCH, "$nm $munch_objs $munch_libs | $munch |") ||
&fail ("$0: unable to run \"$nm\" or \"$munch\"\n");
open (CTORDTOR, "> __ctordtor.c") ||
&fail ("$0: unable to open \"__ctordtor.c\"\n");
while (<MUNCH>) {
#### Filter out munch output that contains '.cpp'. It results from
#### .cpp files that have no text or data, e.g., .cpp files that
#### only contain template instantiations. These lines confuse g++.
print CTORDTOR unless /\.cpp/;
}
close CTORDTOR || &fail ("$0: unable to write \"__ctordtor.c\"\n");
close MUNCH;
system ("$compile -o .obj/__ctordtor.o __ctordtor.c") &&
&fail ("$0: \"$compile\" failed\n");
}
####
#### Construct the link command from @args and perform the link.
####
if ($munch) {
#### Insert ctordtor object file before first library in link command.
$arg_lib = 0;
foreach $arg (@ARGV) {
if ($arg =~ /-l/) {
last;
}
++$arg_lib;
}
splice (@args, $arg_lib, 0, ".obj/__ctordtor.o");
}
$link_command = join (' ', @args);
system ("$link_command") && &fail ("$0: $link_command failed\n");
$done = 1;
&cleanup;
####
####
####
sub fail {
local ($message) = @_;
warn $message;
&cleanup;
}
####
#### clean up when done or on signal
####
sub cleanup {
unlink "__ctordtor.c", ".obj/__ctordtor.o";
if ($done) {
exit 0;
} else {
exit 1;
}
}
#### EOF
|
