5 dh_makeshlibs - automatically create shlibs file
10 use Debian::Debhelper::Dh_Lib;
14 dh_makeshlibs [debhelper options] [-mmajor] [-V[dependancies]] [-n] [-Xitem]
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 DH_COMPAT=3 mode and above only) to any packages which it finds shared
29 =item B<-m>I<major>, B<--major=>I<major>
31 Instead of trying to guess the major number of the library with objdump,
32 use the major number specified after the -m parameter. This is much less
33 useful than it used to be, back in the bad old days when this program
34 looked at library filenames rather than using objdump.
36 =item B<-V>, B<-V>I<dependancies>
38 =item B<--version-info>, B<--version-info=>I<dependancies>
40 By default, the shlibs file generated by this program does not make packages
41 depend on any particular version of the package containing the shared
42 library. It may be necessary for you to add some version dependancy
43 information to the shlibs file. If -V is specified with no dependancy
44 information, the current version of the package is plugged into a
45 dependancy that looks like "packagename (>= packageversion)". If -V is
46 specified with parameters, the parameters can be used to specify the exact
47 dependancy information needed (be sure to include the package name).
49 Beware of using -V without any parameters; this is a conservative setting
50 that always ensures that other packages' shared library dependencies are at
51 least as tight as they need to be, so that if the maintainer screws up then
52 they won't break. The flip side is that packages might end up with
53 dependencies that are too tight and so find it harder to be upgraded.
55 =item B<-n>, B<--noscripts>
57 Do not modify postinst/postrm scripts.
59 =item B<-X>I<item>, B<--exclude=>I<item>
61 Exclude files that contain "item" anywhere in their filename from
62 being treated as shared libraries.
70 Assuming this is a package named libfoobar1, generates a shlibs file that
72 libfoobar 1 libfoobar1
76 Assuming the current version of the package is 1.0-3, generates a shlibs
77 file that looks something like:
78 libfoobar 1 libfoobar1 (>= 1.0-3)
80 dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
82 Generates a shlibs file that looks something like:
83 libfoobar 1 libfoobar1 (>= 1.0)
89 foreach my $package (@{$dh{DOPACKAGES}}) {
90 my $tmp=tmpdir($package);
93 my $need_ldconfig = 0;
95 doit("rm", "-f", "$tmp/DEBIAN/shlibs");
97 # So, we look for files or links to existing files with names that
98 # match "*.so*". Matching *.so.* is not good enough because of
99 # broken crap like db3. And we only look at real files not
100 # symlinks, so we don't accidentually add shlibs data to -dev
101 # packages. This may have a few false positives, which is ok,
102 # because only if we can get a library name and a major number from
103 # objdump is anything actually added.
105 if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
106 $exclude="! \\( $dh{EXCLUDE_FIND} \\) ";
108 open (FIND, "find $tmp -type f -name '*.so*' $exclude |");
110 my ($library, $major);
111 my $objdump=`objdump -p $_`;
112 if ($objdump=~m/\s+SONAME\s+(.+)\.so\.(.+)/) {
113 # proper soname format
117 elsif ($objdump=~m/\s+SONAME\s+(.+)-(.+)\.so/) {
118 # idiotic crap soname format
123 if (defined($dh{M_PARAMS}) && $dh{M_PARAMS} ne '') {
124 $major=$dh{M_PARAMS};
127 if (! -d "$tmp/DEBIAN") {
128 doit("install","-d","$tmp/DEBIAN");
131 if ($dh{V_FLAG_SET}) {
132 if ($dh{V_FLAG} ne '') {
136 # Call isnative becuase it sets $dh{VERSION}
139 $deps="$package (>= $dh{VERSION})";
142 if (defined($library) && defined($major) && defined($deps) &&
143 $library ne '' && $major ne '' && $deps ne '') {
145 # Prevent duplicate lines from entering the file.
146 my $line="$library $major $deps";
147 if (! $seen{$line}) {
149 complex_doit("echo '$line' >>$tmp/DEBIAN/shlibs");
156 if (! compat(2) && ! $dh{NOSCRIPTS} && $need_ldconfig) {
157 autoscript($package,"postinst","postinst-makeshlibs");
158 autoscript($package,"postrm","postrm-makeshlibs");
161 if (-e "$tmp/DEBIAN/shlibs") {
162 doit("chmod",644,"$tmp/DEBIAN/shlibs");
163 doit("chown","0.0","$tmp/DEBIAN/shlibs");
171 This program is a part of debhelper.
175 Joey Hess <joeyh@debian.org>