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|
#!/usr/bin/perl
# $OpenBSD: pkg-config,v 1.53 2011/06/07 12:22:46 jasper Exp $
# $CSK: pkgconfig.pl,v 1.39 2006/11/27 16:26:20 ckuethe Exp $
# Copyright (c) 2006 Chris Kuethe <ckuethe@openbsd.org>
# Copyright (c) 2011 Jasper Lievisse Adriaanse <jasper@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/lib/pkgconfig /usr/local/lib/pkgconfig /usr/X11R6/lib/pkgconfig);
if (defined($ENV{PKG_CONFIG_LIBDIR}) && $ENV{PKG_CONFIG_LIBDIR}) {
@PKGPATH = split /:/, $ENV{PKG_CONFIG_LIBDIR};
} elsif (defined($ENV{PKG_CONFIG_PATH}) && $ENV{PKG_CONFIG_PATH}) {
unshift(@PKGPATH, split /:/, $ENV{PKG_CONFIG_PATH});
}
my $logfile = '';
if (defined($ENV{PKG_CONFIG_LOG}) && $ENV{PKG_CONFIG_LOG}) {
$logfile = $ENV{PKG_CONFIG_LOG};
}
my $allow_uninstalled =
defined $ENV{PKG_CONFIG_DISABLE_UNINSTALLED} ? 0 : 1;
my $found_uninstalled = 0;
my $version = 0.25; # pretend to be this version of pkgconfig
my %configs = ();
setup_self();
my %mode = ();
my $variables = {};
my $D = 0; # debug flag
$variables->{pc_top_builddir} = $ENV{PKG_CONFIG_TOP_BUILD_DIR} //
'$(top_builddir)';
$variables->{pc_sysrootdir} //= $ENV{PKG_CONFIG_SYSROOT_DIR};
# The default '/' is implied.
$D = 1 if defined $ENV{PKG_CONFIG_DEBUG_SPEW};
if ($logfile) {
open my $L, ">>" , $logfile or die;
print $L beautify_list($0, @ARGV), "\n";
close $L;
}
# combo arg-parsing and dependency resolution loop. Hopefully when the loop
# terminates, we have a full list of packages upon which we depend, and the
# right set of compiler and linker flags to use them.
#
# as each .pc file is loaded, it is stored in %configs, indexed by package
# name. this makes it possible to then pull out flags or do substitutions
# without having to go back and reload the files from disk.
Getopt::Long::Configure('no_ignore_case');
GetOptions( 'debug' => \$D,
'help' => \&help, #does not return
'usage' => \&help, #does not return
'list-all' => \$mode{list},
'version' => sub { print "$version\n" ; exit(0);} ,
'errors-to-stdout' => sub { $mode{estdout} = 1},
'print-errors' => sub { $mode{printerr} = 1},
'silence-errors' => sub { $mode{printerr} = 0},
'short-errors' => sub { $mode{printerr} = 0},
'atleast-pkgconfig-version=s' => \$mode{myminvers},
'print-provides' => \$mode{printprovides},
'print-requires' => \$mode{printrequires},
'print-requires-private' => \$mode{printrequiresprivate},
'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{minversion},
'exact-version=s' => \$mode{exactversion},
'max-version=s' => \$mode{maxversion},
'modversion' => \$mode{modversion},
'variable=s' => \$mode{variable},
'define-variable=s' => $variables,
);
# Initial value of printerr depends on the options...
if (!defined $mode{printerr}) {
if (defined $mode{libs} || defined $mode{cflags}
|| defined $mode{version} || defined $mode{list}) {
$mode{printerr} = 1;
} else {
$mode{printerr} = 0;
}
}
print STDERR "\n", beautify_list($0, @ARGV), "\n" if $D;
my $rc = 0;
# XXX pkg-config is a bit weird
{
my $p = join(' ', @ARGV);
$p =~ s/^\s+//;
@ARGV = split /\,?\s+/, $p;
}
if ($mode{myminvers}) {
exit self_version($mode{myminvers});
}
if ($mode{list}) {
exit do_list();
}
my $cfg_full_list = [];
my $top_config = [];
while (@ARGV){
my $p = shift @ARGV;
my $op = undef;
my $v = undef;
if (@ARGV >= 2 && $ARGV[0] =~ /^[<=>]+$/ &&
$ARGV[1] =~ /^[\d\.]+\w?$/) {
$op = shift @ARGV;
$v = shift @ARGV;
}
# For these modes we just need some meta-information and
# parsing the requirements is not needed.
if (!($mode{modversion} || $mode{printprovides})) {
handle_config($p, $op, $v, $cfg_full_list);
}
push(@$top_config, $p);
}
if ($mode{exists}) {
exit $rc;
}
if ($mode{uninstalled}) {
$rc = 1 unless $found_uninstalled;
exit $rc;
}
if ($mode{modversion} || $mode{printprovides}) {
for my $pkg (@$top_config) {
do_modversion($pkg);
}
}
if ($mode{printrequires} || $mode{printrequiresprivate}) {
for my $pkg (@$top_config) {
print_requires($pkg);
}
}
if ($mode{minversion}) {
my $v = $mode{minversion};
for my $pkg (@$top_config) {
$rc = 1 unless versionmatch($configs{$pkg}, '>=', $v);
}
exit $rc;
}
if ($mode{exactversion}) {
my $v = $mode{exactversion};
for my $pkg (@$top_config) {
$rc = 1 unless versionmatch($configs{$pkg}, '=', $v);
}
exit $rc;
}
if ($mode{minversion}) {
my $v = $mode{maxversion};
for my $pkg (@$top_config) {
$rc = 1 unless versionmatch($configs{$pkg}, '<=', $v);
}
exit $rc;
}
my @vlist = ();
if ($mode{variable}) {
for my $pkg (@$top_config) {
do_variable($pkg, $mode{variable});
}
}
my $dep_cfg_list = simplify_and_reverse($cfg_full_list);
if ($mode{cflags} || $mode{libs} || $mode{variable}) {
push @vlist, do_cflags($dep_cfg_list) if $mode{cflags};
push @vlist, do_libs($dep_cfg_list) if $mode{libs};
print join(' ', @vlist), "\n" if $rc == 0;
}
exit $rc;
###########################################################################
sub handle_config
{
my ($p, $op, $v, $list) = @_;
my $cfg = cache_find_config($p);
unshift @$list, $p if defined $cfg;
if (!defined $cfg) {
$rc = 1;
return undef;
}
if (defined $op) {
if (!versionmatch($cfg, $op, $v)) {
mismatch($p, $cfg, $op, $v) if $mode{printerr};
$rc = 1;
return undef;
}
}
my $get_props = sub {
my $property = shift;
my $deps = $cfg->get_property($property, $variables);
if (defined $deps) {
for my $dep (@$deps) {
if ($dep =~ m/^(.*?)\s*([<=>]+)\s*([\d\.]+|[\d\.]+[\w]*[\d]+)$/) {
handle_config($1, $2, $3, $list);
} else {
handle_config($dep, undef, undef, $list);
}
}
print STDERR "package $p ", lc($property), " ",
join(',', @$deps), "\n" if $D;
}
};
&$get_props("Requires");
&$get_props("Requires.private");
}
# look for the .pc file in each of the PKGPATH elements. Return the path or
# undef if it's not there
sub pathresolve
{
my ($p) = @_;
if ($allow_uninstalled && $p !~ m/\-uninstalled$/) {
foreach my $d (@PKGPATH) {
my $f = "$d/$p-uninstalled.pc";
print STDERR "pathresolve($p) looking in $f\n" if $D;
if (-f $f) {
$found_uninstalled = 1;
return $f;
}
}
}
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 (!$@) {
return validate_config($f, $cfg);
} else {
print STDERR $@, "\n" if $D;
}
return undef;
}
sub cache_find_config
{
my $name = shift;
print STDERR "processing $name\n" if $D;
if (exists $configs{$name}) {
return $configs{$name};
} else {
return $configs{$name} = find_config($name);
}
}
# Required elements for a valid .pc file: Name, Description, Version
sub validate_config
{
my ($f, $cfg) = @_;
my @required_elems = ('Name', 'Description', 'Version');
my $e;
foreach (@required_elems) {
$e = $cfg->get_property($_, $variables);
if (!defined $e) {
$f =~ s/(^.*\/)(.*?)\.pc$/$2/g;
print STDERR "Package '$f' has no $_: field\n";
return undef;
}
}
return $cfg;
}
# pkg-config won't install a pkg-config.pc file itself, but it may be
# listed as a dependency in other files.
# so, prime the cache with self
sub setup_self
{
my $pkg_pc = OpenBSD::PkgConfig->new;
$pkg_pc->add_property('Version', $version);
$pkg_pc->add_variable('pc_path', join(":", @PKGPATH));
$configs{'pkg-config'} = $pkg_pc;
}
sub find_config
{
my ($p) = @_;
my $f = pathresolve($p);
if (defined $f) {
return get_config($f);
}
if ($mode{printerr}) {
print STDERR
"Package $p was not found in the pkg-config search path\n";
}
return undef;
}
sub stringize
{
my $list = shift;
my $sep = shift || ',';
if (defined $list) {
return join($sep, @$list)
} else {
return '';
}
}
#if the variable option is set, pull out the named variable
sub do_variable
{
my ($p, $v) = @_;
my $cfg = cache_find_config($p);
if (defined $cfg) {
my $value = $cfg->get_variable($v, $variables);
if (defined $value) {
push(@vlist, $value);
}
return undef;
}
$rc = 1;
}
#if the modversion or print-provides options are set,
#pull out the compiler flags
sub do_modversion
{
my ($p) = @_;
my $cfg = cache_find_config($p);
if (defined $cfg) {
my $value = $cfg->get_property('Version', $variables);
if (defined $value) {
if (!defined($mode{printprovides})){
print stringize($value), "\n";
return undef;
} else {
print "$p = " . stringize($value) . "\n";
return undef;
}
}
}
$rc = 1;
}
#if the cflags option is set, pull out the compiler flags
sub do_cflags
{
my $list = shift;
my $cflags = [];
foreach my $pkg (@$list) {
my $l = $configs{$pkg}->get_property('Cflags', $variables);
push(@$cflags, @$l) if defined $l;
}
my $a = OpenBSD::PkgConfig->compress($cflags,
sub {
local $_ = shift;
if (($mode{cflags} & 1) && /^-I/ ||
($mode{cflags} & 2) && !/^-I/) {
return 1;
} else {
return 0;
}
});
if (defined($a) && defined($variables->{pc_sysrootdir})){
$a =~ s/[\w]?-I/$&$variables->{pc_sysrootdir}/g;
}
return $a;
}
#if the lib option is set, pull out the linker flags
sub do_libs
{
my $list = shift;
my $libs = [];
foreach my $pkg (@$list) {
my $l = $configs{$pkg}->get_property('Libs', $variables);
push(@$libs, @$l) if defined $l;
}
my $a = OpenBSD::PkgConfig->compress($libs,
sub {
local $_ = shift;
if (($mode{libs} & 2) && /^-L/ ||
($mode{libs} & 4) && !/^-[lL]/) {
return 1;
} else {
return 0;
}
});
if (defined($variables->{pc_sysrootdir})){
$a =~ s/[\w]?-[lL]/$&$variables->{pc_sysrootdir}/g;
}
if ($mode{libs} & 1) {
my $b = OpenBSD::PkgConfig->rcompress($libs,
sub { shift =~ m/^-l/; });
return ($a, $b);
} else {
return $a;
}
}
#list all packages
sub do_list
{
my ($p, $x, $y, @files, $fname, $name);
my $error = 0;
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);
if (!defined $cfg) {
print STDERR "Problem reading file $f\n";
$error = 1;
next;
}
$fname = basename($f, '.pc');
printf("%${x}s %s - %s\n", $fname,
stringize($cfg->get_property('Name', $variables), ' '),
stringize($cfg->get_property('Description', $variables),
' '));
}
return $error;
}
sub help
{
print <<EOF
Usage: $0 [options]
--debug - turn on debugging output
--help - this message
--usage - this message
--list-all - show all packages that $0 can find
--version - print version of pkgconfig
--errors-to-stdout - direct error messages to stdout rather than stderr
--print-errors - print error messages in case of error
--print-provides - print all the modules the given package provides
--print-requires - print all the modules the given package requires
--print-requires-private - print all the private modules the given package requires
--silence-errors - don't print error messages in case of error
--atleast-pkgconfig-version [version] - require a certain version of pkgconfig
--cflags package [versionspec] [package [versionspec]]
--cflags-only-I - only output -Iincludepath flags
--cflags-only-other - only output flags that are not -I
--define-variable=NAME=VALUE - define variables
--libs package [versionspec] [package [versionspec]]
--libs-only-l - only output -llib flags
--libs-only-L - only output -Llibpath flags
--libs-only-other - only output flags that are not -l or -L
--exists package [versionspec] [package [versionspec]]
--uninstalled - allow for uninstalled versions to be used
--static - adjust output for static linking
--atleast-version [version] - require a certain version of a package
--modversion [package] - query the version of a package
--variable var package - return the definition of <var> in <package>
EOF
;
exit 0;
}
# do we meet/beat the version the caller requested?
sub self_version
{
my ($v) = @_;
my (@a, @b);
@a = split /\./, $v;
@b = split /\./, $version;
if (($b[0] >= $a[0]) && ($b[1] >= $a[1])) {
return 0;
} else {
return 1;
}
}
sub compare
{
my ($a, $b) = @_;
my ($full_a, $full_b) = ($a, $b);
my (@suffix_a, @suffix_b);
return 0 if ($a eq $b);
# is there a valid non-numeric suffix to deal with later?
# accepter are (in order): a(lpha) < b(eta) < rc < ' '.
# suffix[0] is the 'alpha' part, suffix[1] is the '1' part in 'alpha1'.
if ($a =~ s/(rc|beta|b|alpha|a)(\d+)$//) {
print STDERR "valid suffix $1$2 found in $a.\n" if $D;
$suffix_a[0] = $1;
$suffix_a[1] = $2;
}
if ($b =~ s/(rc|beta|b|alpha|a)(\d+)$//) {
print STDERR "valid suffix $1$2 found in $b.\n" if $D;
$suffix_b[0] = $1;
$suffix_b[1] = $2;
}
my @a = split /\./, $a;
my @b = split /\./, $b;
while (@a && @b) { #so long as both lists have something
if (!(@suffix_a || @suffix_b)) {
# simple comparison when no suffixes are in the game.
my $rc = compare_numeric($a[0], $b[0], 0);
return $rc if defined($rc);
} else {
# extended comparison.
if (((@a == 1) || (@b == 1)) &&
($a[0] == $b[0])){
# one of the arrays has reached the last element,
# compare the suffix.
# directly compare suffixes, provided both suffixes
# are present.
if (@suffix_a && @suffix_b) {
my $first_char = sub {
return substr(shift, 0, 1);
};
# suffixes are equal, compare on numeric
if (&$first_char($suffix_a[0]) eq
&$first_char($suffix_b[0])) {
return compare_numeric($suffix_a[1], $suffix_b[1], 1);
}
# rc beats beta beats alpha
if (&$first_char($suffix_a[0]) lt &$first_char($suffix_b[0])) {
print STDERR "$full_a (installed) < $full_b (wanted)\n" if $D;
return -1;
} else {
print STDERR "$full_a (installed) > $full_b (wanted)\n" if $D;
return 1;
}
} else {
# one of either is lacking a suffix,
# thereby beating the other.
# e.g.: 1.02 > 1.02b1
if (@suffix_a) { # a is older
print STDERR "$full_a (installed) < $full_b (wanted)\n" if $D;
return -1;
}
if (@suffix_b) { # b is older
print STDERR "$full_a (installed) > $full_b (wanted)\n" if $D;
return 1;
}
}
} else {
my $rc = compare_numeric($a[0], $b[0], 0);
return $rc if defined($rc);
}
}
shift @a; shift @b;
}
return 1 if @a;
return -1 if @b;
return 0;
}
# simple numeric comparison, with optional equality test.
sub compare_numeric
{
my ($x, $y, $eq) = @_;
return 1 if $x > $y;
return -1 if $x < $y;
return 0 if (($x == $y) and ($eq == 1));
return undef;
}
# got a package meeting the requested specific version?
sub versionmatch
{
my ($cfg, $op, $want) = @_;
# can't possibly match if we can't find the file
return 0 if !defined $cfg;
my $inst = stringize($cfg->get_property('Version', $variables));
# can't possibly match if we can't find the version string
return 0 if $inst eq '';
print "comparing $want (wanted) to $inst (installed)\n" if $D;
my $value = compare($inst, $want);
if ($op eq '>=') { return $value >= 0; }
elsif ($op eq '=') { return $value == 0; }
elsif ($op eq '!=') { return $value != 0; }
elsif ($op eq '<') { return $value < 0; }
elsif ($op eq '>') { return $value > 0; }
elsif ($op eq '<=') { return $value <= 0; }
}
sub mismatch
{
my ($p, $cfg, $op, $v) = @_;
my $name = stringize($cfg->get_property('Name'), ' ');
my $version = stringize($cfg->get_property('Version'));
my $url = stringize($cfg->get_property('URL'));
print STDERR "Requested '$p $op $v' but version of $name is $version\n";
print STDERR "You may find new versions of $name at $url\n" if $url;
}
sub simplify_and_reverse
{
my $reqlist = shift;
my $dejavu = {};
my $result = [];
for my $item (@$reqlist) {
if (!$dejavu->{$item}) {
unshift @$result, $item;
$dejavu->{$item} = 1;
}
}
return $result;
}
# retrieve and print Requires(.private)
sub print_requires
{
my ($p) = @_;
my $cfg = cache_find_config($p);
if (defined($cfg)) {
my $value;
if (defined($mode{printrequires})) {
$value = $cfg->get_property('Requires', $variables);
} elsif (defined($mode{printrequiresprivate})) {
$value = $cfg->get_property('Requires.private', $variables);
} else {
print STDERR "Unknown mode for print_requires.\n" if $D;
return 1;
}
if (defined($value)) {
print "$_\n" foreach (@$value);
return undef;
}
}
$rc = 1;
}
sub beautify_list
{
return join(' ', map {"[$_]"} @_);
}
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