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#!/usr/bin/perl -w
=head1 NAME
dh_makeshlibs - automatically create shlibs file
=cut
use strict;
use Debian::Debhelper::Dh_Lib;
=head1 SYNOPSIS
dh_makeshlibs [debhelper options] [-mmajor] [-V[dependancies]] [-n]
=head1 DESCRIPTION
dh_makeshlibs is a debhelper program that automatically scans for shared
libraries, and generates a shlibs file for the libraries it finds.
It also adds a call to ldconfig in the postinst and postrm scripts (in
DH_COMPAT=3 mode and above only).
=head1 OPTIONS
=over 4
=item B<-m>I<major>, B<--major=>I<major>
Instead of trying to guess the major number of the library with objdump,
use the major number specified after the -m parameter. This is much less
useful than it used to be, back in the bad old days when this program
looked at library filenames rather than using objdump.
=item B<-V>, B<-V>I<dependancies>
=item B<--version-info>, B<--version-info=>I<dependancies>
By default, the shlibs file generated by this program does not make packages
depend on any particular version of the package containing the shared
library. It may be necessary for you to add some version dependancy
information to the shlibs file. If -V is specified with no dependancy
information, the current version of the package is plugged into a
dependancy that looks like "packagename (>= packageversion)". If -V is specified with
parameters, the parameters can be used to specify the exact dependancy
information needed (be sure to include the package name).
=item B<-n>, B<--noscripts>
Do not modify postinst/postrm scripts.
=back
=head1 EXAMPLES
dh_makeshlibs
Assuming this is a package named libfoobar1, generates a shlibs file that
looks something like:
libfoobar 1 libfoobar1
dh_makeshlibs -V
Assuming the current version of the package is 1.0-3, generates a shlibs
file that looks something like:
libfoobar 1 libfoobar1 (>= 1.0-3)
dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
Generates a shlibs file that looks something like:
libfoobar 1 libfoobar1 (>= 1.0)
=cut
init();
foreach my $package (@{$dh{DOPACKAGES}}) {
my $tmp=tmpdir($package);
my %seen;
my $need_ldconfig = 0;
doit("rm", "-f", "$tmp/DEBIAN/shlibs");
open (FIND, "find $tmp -xtype f -name '*.so*' |");
while (<FIND>) {
my ($library, $major) =
`objdump -p $_` =~ m/\s+SONAME\s+(.+)\.so\.(.+)/;
if (defined($dh{M_PARAMS}) && $dh{M_PARAMS} ne '') {
$major=$dh{M_PARAMS};
}
if (! -d "$tmp/DEBIAN") {
doit("install","-d","$tmp/DEBIAN");
}
my $deps=$package;
if ($dh{V_FLAG_SET}) {
if ($dh{V_FLAG} ne '') {
$deps=$dh{V_FLAG};
}
else {
# Call isnative becuase it sets $dh{VERSION}
# as a side effect.
isnative($package);
$deps="$package (>= $dh{VERSION})";
}
}
if (defined($library) && defined($major) && defined($deps) &&
$library ne '' && $major ne '' && $deps ne '') {
$need_ldconfig=1;
# Prevent duplicate lines from entering the file.
my $line="$library $major $deps";
if (! $seen{$line}) {
$seen{$line}=1;
complex_doit("echo '$line' >>$tmp/DEBIAN/shlibs");
}
}
}
close FIND;
# New as of dh_v3.
if (! compat(2) && ! $dh{NOSCRIPTS} && $need_ldconfig) {
autoscript($package,"postinst","postinst-makeshlibs");
autoscript($package,"postrm","postrm-makeshlibs");
}
if (-e "$tmp/DEBIAN/shlibs") {
doit("chmod",644,"$tmp/DEBIAN/shlibs");
doit("chown","0.0","$tmp/DEBIAN/shlibs");
}
}
=head1 SEE ALSO
L<debhelper(1)>
This program is a part of debhelper.
=head1 AUTHOR
Joey Hess <joeyh@debian.org>
=cut
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