File: [local] / src / usr.bin / pkg-config / pkg-config (download)
Revision 1.11, Sat Dec 2 18:28:22 2006 UTC (17 years, 6 months ago) by espie
Branch: MAIN
Changes since 1.10: +164 -145 lines
rely on PkgConfig.pm, and so really parse the *.pc files.
handle --define-variable
handle multiple dependencies in the correct order, so that linking will
work with complex requirements.
okay ckuethe@, matthieu@
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#!/usr/bin/perl
# $OpenBSD: pkg-config,v 1.11 2006/12/02 18:28:22 espie Exp $
#$CSK: pkgconfig.pl,v 1.39 2006/11/27 16:26:20 ckuethe Exp $
# Copyright (c) 2006 Chris Kuethe <ckuethe@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 Getopt::Long;
use File::Basename;
use OpenBSD::PkgConfig;
my @PKGPATH = qw(/usr/local/lib/pkgconfig /usr/X11R6/lib/pkgconfig );
if (defined($ENV{'PKG_CONFIG_PATH'}) && $ENV{'PKG_CONFIG_PATH'}) {
push(@PKGPATH, split /:/, $ENV{'PKG_CONFIG_PATH'});
}
my $logfile = '';
if (defined($ENV{'PKG_CONFIG_LOGFILE'}) && $ENV{'PKG_CONFIG_LOGFILE'}) {
$logfile = $ENV{'PKG_CONFIG_LOGFILE'};
}
my $version = 0.19; # pretend to be this version of pkgconfig
my %configs = ();
my $cfg_list = [];
my %mode = ();
my $variables = {};
my $D = 0; # debug flag
# defaults
$mode{printerr} = 1;
if ($logfile) {
open my $L, ">>" . $logfile;
print $L '[' . join('] [', $0, @ARGV) . "]\n";
close $L;
}
# combo arg-parsing and dependency resolution loop. Hopefully when the loop
# terminates, we have a full list of packages upon which we depend, and the
# right set of compiler and linker flags to use them.
#
# as each .pc file is loaded, it is stored in %configs, indexed by package
# name. this makes it possible to then pull out flags or do substitutions
# without having to go back and reload the files from disk
Getopt::Long::Configure('no_ignore_case');
GetOptions( 'debug' => \$D,
'help' => \&help, #does not return
'usage' => \&help, #does not return
'list-all' => \&do_list, #does not return
'version' => sub { print "$version\n" ; exit(0);} ,
'errors-to-stdout' => sub { $mode{estdout} = 1},
'print-errors' => sub { $mode{printerr} = 1},
'silence-errors' => sub { $mode{printerr} = 0},
'atleast-pkgconfig-version=s' => \$mode{minvers},
'cflags' => sub { $mode{cflags} = 3},
'cflags-only-I' => sub { $mode{cflags} |= 1},
'cflags-only-other' => sub { $mode{cflags} |= 2},
'libs' => sub { $mode{libs} = 7},
'libs-only-l' => sub { $mode{libs} |= 1},
'libs-only-L' => sub { $mode{libs} |= 2},
'libs-only-other' => sub { $mode{libs} |= 4},
'exists' => sub { $mode{exists} = 1} ,
'static' => sub { $mode{static} = 1},
'uninstalled' => sub { $mode{uninstalled} = 1},
'atleast-version=s' => \$mode{'atleast-version'},
'modversion:s' => \$mode{modversion},
'variable=s' => \$mode{variable},
'define-variable=s' => $variables,
);
print STDERR "\n[" . join('] [', $0, @ARGV) . "]\n" if $D;
self_version($mode{minvers}) if $mode{minvers}; #does not return
if (defined $mode{modversion}) {
if ($mode{modversion}) {
do_modversion($mode{modversion}) ; #does not return
} else {
print $version . "\n";
exit 0;
}
}
{
my $p = join(' ', @ARGV);
$p =~ s/\s+/ /g;
$p =~ s/^\s//g;
@ARGV = split /\s+/, $p;
}
if (defined $mode{exists}) {
while (@ARGV) {
if ((@ARGV >= 2) && ($ARGV[1] =~ /[<=>]+/) &&
($ARGV[2] =~ /[0-9\.]+/)) {
exit 1 unless versionmatch(@ARGV);
shift @ARGV; shift @ARGV; shift @ARGV;
} else {
exit 1 unless pathresolve($ARGV[0]);
shift @ARGV;
}
}
exit 0;
}
do_variable($ARGV[0], $mode{variable}) if $mode{variable};
while (@ARGV){
my $p = $ARGV[0];
if ((@ARGV >= 2) && ($ARGV[1] =~ /[<=>]+/) &&
($ARGV[2] =~ /[0-9\.]+/)) {
shift @ARGV;
shift @ARGV;
}
shift @ARGV;
$p =~ s/,//g;
handle_config($p);
}
if ($mode{cflags} || $mode{libs}) {
my @l = ();
push @l, do_cflags() if $mode{cflags};
push @l, do_libs() if $mode{libs};
print join(' ', @l), "\n";
}
exit 0;
###########################################################################
sub handle_config
{
my $p = shift;
return if $configs{$p};
print STDERR "processing $p\n" if $D;
my $cfg = find_config($p);
if (!defined $cfg) {
warn "can't find $p\n" if $mode{printerr};
exit 1;
}
return undef if defined $mode{exists};
push(@$cfg_list, $p);
$configs{$p} = $cfg;
my $deps = $cfg->get_property('Requires', $variables);
if (defined $deps) {
# XXX don't handle version yet
map { s/\s*[<=>]+\s*[\d\.]+//; handle_config($_) } @$deps;
print STDERR "package $p requires ",
join(',', @$deps), "\n" if $D;
}
$deps = $cfg->get_property('Requires.private', $variables);
if (defined $deps) {
# XXX don't handle version yet
map { s/\s*[<=>]+\s*[\d\.]+//; handle_config($_) } @$deps;
print STDERR "package $p requires (private)",
join(',', @$deps), "\n" if $D;
}
}
# look for the .pc file in each of the PKGPATH elements. Return the path or
# undef if it's not there
sub pathresolve
{
my ($p) = @_;
foreach my $d (@PKGPATH) {
my $f = "$d/$p.pc";
print STDERR "pathresolve($p) looking in $f\n" if $D;
return $f if -f $f;
}
return undef;
}
sub get_config
{
my ($f) = @_;
my $cfg;
eval {
$cfg = OpenBSD::PkgConfig->read_file($f);
};
if (!$@) {
return $cfg;
} else {
print STDERR $@, "\n" if $@;
}
return undef;
}
sub find_config
{
my ($p) = @_;
my $f = pathresolve($p);
if (defined $f) {
return get_config($f);
}
return undef;
}
sub stringize
{
my $list = shift;
if (defined $list) {
return join(',', @$list)
} else {
return '';
}
}
#if the variable option is set, pull out the named variable
sub do_variable
{
my ($p, $v) = @_;
if (my $cfg = find_config($p)) {
my $value = $cfg->get_variable($v, $variables);
if (defined $value) {
print $value, "\n";
exit 1;
}
}
exit 0;
}
#if the modversion option is set, pull out the compiler flags
sub do_modversion
{
my ($p) = @_;
if (my $cfg = find_config($p)) {
my $value = $cfg->get_property('Version', $variables);
if (defined $value) {
print stringize($value), "\n";
exit 1;
}
}
exit 0;
}
#if the cflags option is set, pull out the compiler flags
sub do_cflags
{
my $cflags = [];
foreach my $pkg (@$cfg_list) {
my $l = $configs{$pkg}->get_property('Cflags', $variables);
push(@$cflags, @$l) if defined $l;
}
return OpenBSD::PkgConfig->compress($cflags,
sub {
local $_ = shift;
if (($mode{cflags} & 1) && /^-I/ ||
($mode{cflags} & 2) && !/^-I/) {
return 1;
} else {
return 0;
}
});
}
#if the lib option is set, pull out the linker flags
sub do_libs
{
my $libs = [];
foreach my $pkg (@$cfg_list) {
my $l = $configs{$pkg}->get_property('Libs', $variables);
push(@$libs, @$l) if defined $l;
}
return OpenBSD::PkgConfig->compress($libs,
sub {
local $_ = shift;
if (($mode{libs} & 1) && /^-l/ ||
($mode{libs} & 2) && /^-L/ ||
($mode{libs} & 4) && !/^-[lL]/) {
return 1;
} else {
return 0;
}
});
}
#list all packages
sub do_list
{
my ($p, $x, $y, @files, $fname, $name);
foreach my $p (@PKGPATH) {
push(@files, <$p/*.pc>);
}
# Scan the lengths of the package names so I can make a format
# string to line the list up just like the real pkgconfig does.
$x = 0;
foreach my $f (@files) {
$fname = basename($f, '.pc');
$y = length $fname;
$x = (($y > $x) ? $y : $x);
}
$x *= -1;
foreach my $f (@files) {
my $cfg = get_config($f);
$fname = basename($f, '.pc');
printf("%${x}s %s - %s\n", $fname,
stringize($cfg->get_property('Name', $variables)),
stringize($cfg->get_property('Description', $variables)));
}
exit 0;
}
sub help
{
print <<EOF
Usage: $0 [options]
--debug - turn on debugging output
--help - this message
--usage - this message
--list-all - show all packages that $0 can find
--version - print version of pkgconfig
--errors-to-stdout - direct error messages to stdout rather than stderr
--print-errors - print error messages in case of error
--silence-errors - don't print error messages in case of error
--atleast-pkgconfig-version [version] - require a certain version of pkgconfig
--cflags package [versionspec] [package [versionspec]]
--cflags-only-I - only output -Iincludepath flags
--cflags-only-other - only output flags that are not -I
--define-variable=NAME=VALUE - define variables
--libs package [versionspec] [package [versionspec]]
--libs-only-l - only output -llib flags
--libs-only-L - only output -Llibpath flags
--libs-only-other - only output flags that are not -l or -L
--exists package [versionspec] [package [versionspec]]
--uninstalled - allow for uninstalled versions to be used
--static - adjust output for static linking
--atleast-version [version] - require a certain version of a package
--modversion [package] - query the version of a package
--variable var package - return the definition of <var> in <package>
EOF
;
exit 1;
}
# do we meet/beat the version the caller requested?
sub self_version
{
my ($v) = @_;
my (@a, @b);
@a = split /\./, $v;
@b = split /\./, $version;
if (($b[0] >= $a[0]) && ($b[1] >= $a[1])) {
exit 0;
} else {
exit 1;
}
}
# got a package meeting the requested specific version?
sub versionmatch
{
my ($pname, $op, $ver) = @_;
print STDERR "pname = '$pname'\n" if $D;
my $cfg = find_config($pname);
# can't possibly match if we can't find the file
return 0 if !defined $cfg;
$configs{$pname} = $cfg;
my $v = stringize($cfg->get_property('Version', $variables));
# can't possibly match if we can't find the version string
return 0 if $v eq '';
print "comparing $ver (wanted) to $v (installed)\n" if $D;
my @inst = split /\./, $v;
my @want = split /\./, $ver;
while (@inst && @want) { #so long as both lists have something
# bail if the requested version element beats existing
return 1 if $inst[0] > $want[0];
return 0 if $inst[0] < $want[0];
shift @inst; shift @want;
}
# the version at least equals the requested. if the requested
# version has some micropatchlevel beyond the existing version,
# return failure
return 0 if @want;
# and after all that, the version is good enough
return 1;
}