5 dh_makeshlibs - automatically create shlibs file
10 use Debian::Debhelper::Dh_Lib;
14 B<dh_makeshlibs> [S<I<debhelper options>>] [B<-m>I<major>] [B<-V>I<[dependancies]>] [B<-n>] [B<-X>I<item>]
18 dh_makeshlibs is a debhelper program that automatically scans for shared
19 libraries, and generates a shlibs file for the libraries it finds.
21 It also adds a call to ldconfig in the postinst and postrm scripts (in
22 V3 mode and above only) to any packages which it finds shared libraries in.
28 =item B<-m>I<major>, B<--major=>I<major>
30 Instead of trying to guess the major number of the library with objdump,
31 use the major number specified after the -m parameter. This is much less
32 useful than it used to be, back in the bad old days when this program
33 looked at library filenames rather than using objdump.
35 =item B<-V>, B<-V>I<dependancies>
37 =item B<--version-info>, B<--version-info=>I<dependancies>
39 By default, the shlibs file generated by this program does not make packages
40 depend on any particular version of the package containing the shared
41 library. It may be necessary for you to add some version dependancy
42 information to the shlibs file. If -V is specified with no dependancy
43 information, the current version of the package is plugged into a
44 dependancy that looks like "packagename (>= packageversion)". If -V is
45 specified with parameters, the parameters can be used to specify the exact
46 dependancy information needed (be sure to include the package name).
48 Beware of using -V without any parameters; this is a conservative setting
49 that always ensures that other packages' shared library dependencies are at
50 least as tight as they need to be, so that if the maintainer screws up then
51 they won't break. The flip side is that packages might end up with
52 dependencies that are too tight and so find it harder to be upgraded.
54 =item B<-n>, B<--noscripts>
56 Do not modify postinst/postrm scripts.
58 =item B<-X>I<item>, B<--exclude=>I<item>
60 Exclude files that contain "item" anywhere in their filename or directory
61 from being treated as shared libraries.
69 Assuming this is a package named libfoobar1, generates a shlibs file that
71 libfoobar 1 libfoobar1
75 Assuming the current version of the package is 1.0-3, generates a shlibs
76 file that looks something like:
77 libfoobar 1 libfoobar1 (>= 1.0-3)
79 dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
81 Generates a shlibs file that looks something like:
82 libfoobar 1 libfoobar1 (>= 1.0)
88 foreach my $package (@{$dh{DOPACKAGES}}) {
89 next if is_udeb($package);
91 my $tmp=tmpdir($package);
94 my $need_ldconfig = 0;
96 doit("rm", "-f", "$tmp/DEBIAN/shlibs");
98 # So, we look for files or links to existing files with names that
99 # match "*.so*". Matching *.so.* is not good enough because of
100 # broken crap like db3. And we only look at real files not
101 # symlinks, so we don't accidentually add shlibs data to -dev
102 # packages. This may have a few false positives, which is ok,
103 # because only if we can get a library name and a major number from
104 # objdump is anything actually added.
106 if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
107 $exclude="! \\( $dh{EXCLUDE_FIND} \\) ";
109 open (FIND, "find $tmp -type f \\( -name '*.so' -or -name '*.so.*' \\) $exclude |");
111 my ($library, $major);
112 my $objdump=`objdump -p $_`;
113 if ($objdump=~m/\s+SONAME\s+(.+)\.so\.(.+)/) {
114 # proper soname format
118 elsif ($objdump=~m/\s+SONAME\s+(.+)-(.+)\.so/) {
119 # idiotic crap soname format
124 if (defined($dh{M_PARAMS}) && $dh{M_PARAMS} ne '') {
125 $major=$dh{M_PARAMS};
128 if (! -d "$tmp/DEBIAN") {
129 doit("install","-d","$tmp/DEBIAN");
132 if ($dh{V_FLAG_SET}) {
133 if ($dh{V_FLAG} ne '') {
137 # Call isnative becuase it sets $dh{VERSION}
140 my $version = $dh{VERSION};
141 # Old compatability levels include the
142 # debian revision, while new do not.
144 # Remove debian version, if any.
145 $version =~ s/-[^-]+$//;
147 $deps="$package (>= $version)";
150 if (defined($library) && defined($major) && defined($deps) &&
151 $library ne '' && $major ne '' && $deps ne '') {
153 # Prevent duplicate lines from entering the file.
154 my $line="$library $major $deps";
155 if (! $seen{$line}) {
157 complex_doit("echo '$line' >>$tmp/DEBIAN/shlibs");
164 if (! compat(2) && ! $dh{NOSCRIPTS} && $need_ldconfig) {
165 autoscript($package,"postinst","postinst-makeshlibs");
166 autoscript($package,"postrm","postrm-makeshlibs");
169 if (-e "$tmp/DEBIAN/shlibs") {
170 doit("chmod",644,"$tmp/DEBIAN/shlibs");
171 doit("chown","0:0","$tmp/DEBIAN/shlibs");
179 This program is a part of debhelper.
183 Joey Hess <joeyh@debian.org>