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#!/usr/bin/perl -w
# Copyright (C) 2010 Modestas Vainius <modax@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
=head1 NAME
dh_sodeps - generate library dependencies for development *.so symlinks
=head1 SYNOPSIS
B<dh_sodeps> [S<I<debhelper options>>] [B<-V>I<versioninfo>]
=head1 DESCRIPTION
dh_sodeps is a helper program that generates library dependencies for *.so
symlinks that are typically found in the library development packages.
It basically looks for F<usr/lib/*.so> in the package build directory, finds
all local arch specific packages that actually contain targets of those
symlinks and adds dependencies on the discovered packages to the C<so:Depends>
substitution variable. Dependencies are strict by default, i.e.
(=${binary:Version}) if the package containing *.so is arch specific or
(>=${source:Version}) if it is arch independent.
=head1 OPTIONS
=over 4
=item B<-V>I<versioninfo>, B<--version-info>=I<versioninfo>
Use the specified version information for dependencies. If this option is not
specified, dh_sodeps will generate a strict dependency as explained above.
Please note that you don't need to enclose the value in brackets. dh_sodeps
will do this automatically.
=item B<-X>I<item>, B<--exclude> I<item>
Do not calculate dependencies for *.so files that contain "item" anywhere in
their path/filename. You may use this option multiple times to build up a list
of things to exclude.
=back
=cut
use strict;
use warnings;
use Debian::Debhelper::Dh_Lib;
my $opt_verinfo;
init(options => {
'version-info|V' => \$opt_verinfo,
});
exit 0 unless @{$dh{DOPACKAGES}};
my @packages = getpackages("arch");
foreach my $package (@{$dh{DOPACKAGES}}) {
my $tmpdir = tmpdir($package);
my $globstring = "$tmpdir/usr/lib/*.so";
my $multiarch = dpkg_architecture_value("DEB_HOST_MULTIARCH");
if (defined $multiarch) {
$globstring = "$globstring $tmpdir/usr/lib/$multiarch/*.so"
}
my @solinks = grep { -l $_ } glob($globstring);
if (@solinks) {
my $arch = package_arch($package);
my $verinfo;
if (defined $opt_verinfo) {
$verinfo = $opt_verinfo;
} elsif ($arch eq "all") {
$verinfo = '>= ${source:Version}';
} else {
$verinfo = '= ${binary:Version}';
}
foreach my $solink (@solinks) {
next if excludefile($solink);
my $target = readlink($solink);
foreach my $p (@packages) {
next if $p eq $package;
if (-e "debian/$p/usr/lib/$target" || (defined $multiarch and -e "debian/$p/usr/lib/$multiarch/$target")) {
addsubstvar($package, "so:Depends", $p, $verinfo);
}
}
}
}
}
exit 0;
=head1 SEE ALSO
L<debhelper(7)>
=head1 AUTHOR
Modestas Vainius <modax@debian.org>
=cut
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