5 dh_makeshlibs - automatically create shlibs file and call dpkg-gensymbols
10 use Debian::Debhelper::Dh_Lib;
14 B<dh_makeshlibs> [S<I<debhelper options>>] [B<-m>I<major>] [B<-V>I<[dependencies]>] [B<-n>] [B<-X>I<item>] [S<B<--> I<params>>]
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 in which it finds shared libraries.
24 If a L<dpkg-gensymbols(1)> symbol file is found in debian/package.symbols
25 (or debian/package.symbols.arch), dpkg-gensymbols will be called
26 to process and install the symbols file. Packages using symbols files
27 should Build-Depend on dpkg-dev (>= 1.14.8).
33 =item B<-m>I<major>, B<--major=>I<major>
35 Instead of trying to guess the major number of the library with objdump,
36 use the major number specified after the -m parameter. This is much less
37 useful than it used to be, back in the bad old days when this program
38 looked at library filenames rather than using objdump.
40 =item B<-V>, B<-V>I<dependencies>
42 =item B<--version-info>, B<--version-info=>I<dependencies>
44 By default, the shlibs file generated by this program does not make packages
45 depend on any particular version of the package containing the shared
46 library. It may be necessary for you to add some version dependancy
47 information to the shlibs file. If -V is specified with no dependency
48 information, the current upstream version of the package is plugged into a
49 dependency that looks like "packagename (>= packageversion)". Note that in
50 debhelper compatibility levels before v4, the debian part of the package
51 version number is also included. If -V is specified with parameters, the
52 parameters can be used to specify the exact dependency information needed
53 (be sure to include the package name).
55 Beware of using -V without any parameters; this is a conservative setting
56 that always ensures that other packages' shared library dependencies are at
57 least as tight as they need to be (unless your library is prone to changing
58 ABI without updating the upstream version number), so that if the
59 maintainer screws up then they won't break. The flip side is that packages
60 might end up with dependencies that are too tight and so find it harder to
63 =item B<-n>, B<--noscripts>
65 Do not modify postinst/postrm scripts.
67 =item B<-X>I<item>, B<--exclude=>I<item>
69 Exclude files that contain "item" anywhere in their filename or directory
70 from being treated as shared libraries.
72 =item B<--add-udeb=>I<udeb>
74 Create an additional line for udebs in the shlibs file and use "udeb" as the
75 package name for udebs to depend on instead of the regular library package.
79 Pass "params" to L<dpkg-gensymbols(1)>.
89 Assuming this is a package named libfoobar1, generates a shlibs file that
91 libfoobar 1 libfoobar1
93 =item dh_makeshlibs -V
95 Assuming the current version of the package is 1.1-3, generates a shlibs
96 file that looks something like:
97 libfoobar 1 libfoobar1 (>= 1.1)
99 =item dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
101 Generates a shlibs file that looks something like:
102 libfoobar 1 libfoobar1 (>= 1.0)
110 foreach my $package (@{$dh{DOPACKAGES}}) {
111 next if is_udeb($package);
113 my $tmp=tmpdir($package);
116 my $need_ldconfig = 0;
118 doit("rm", "-f", "$tmp/DEBIAN/shlibs");
120 # So, we look for files or links to existing files with names that
121 # match "*.so*". Matching *.so.* is not good enough because of
122 # broken crap like db3. And we only look at real files not
123 # symlinks, so we don't accidentually add shlibs data to -dev
124 # packages. This may have a few false positives, which is ok,
125 # because only if we can get a library name and a major number from
126 # objdump is anything actually added.
129 if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
130 $exclude="! \\( $dh{EXCLUDE_FIND} \\) ";
132 open (FIND, "find $tmp -type f \\( -name '*.so' -or -name '*.so.*' \\) $exclude |");
134 my ($library, $major);
135 my $objdump=`objdump -p $_`;
136 if ($objdump=~m/\s+SONAME\s+(.+)\.so\.(.+)/) {
137 # proper soname format
141 elsif ($objdump=~m/\s+SONAME\s+(.+)-(.+)\.so/) {
142 # idiotic crap soname format
147 if (defined($dh{M_PARAMS}) && $dh{M_PARAMS} ne '') {
148 $major=$dh{M_PARAMS};
151 if (! -d "$tmp/DEBIAN") {
152 doit("install","-d","$tmp/DEBIAN");
155 if ($dh{V_FLAG_SET}) {
156 if ($dh{V_FLAG} ne '') {
160 # Call isnative becuase it sets $dh{VERSION}
163 my $version = $dh{VERSION};
164 # Old compatibility levels include the
165 # debian revision, while new do not.
167 # Remove debian version, if any.
168 $version =~ s/-[^-]+$//;
170 $deps="$package (>= $version)";
173 if (defined($library) && defined($major) && defined($deps) &&
174 $library ne '' && $major ne '' && $deps ne '') {
176 # Prevent duplicate lines from entering the file.
177 my $line="$library $major $deps";
178 if (! $seen{$line}) {
180 complex_doit("echo '$line' >>$tmp/DEBIAN/shlibs");
181 if (defined($dh{SHLIBS_UDEB}) && $dh{SHLIBS_UDEB} ne '') {
182 my $udeb_deps = $deps;
183 $udeb_deps =~ s/\Q$package\E/$dh{SHLIBS_UDEB}/e;
184 $line="udeb: "."$library $major $udeb_deps";
185 push @udeb_lines, $line;
192 # Write udeb: lines last.
193 foreach (@udeb_lines) {
194 complex_doit("echo '$_' >>$tmp/DEBIAN/shlibs");
198 if (! compat(2) && ! $dh{NOSCRIPTS} && $need_ldconfig) {
199 autoscript($package,"postinst","postinst-makeshlibs");
200 autoscript($package,"postrm","postrm-makeshlibs");
203 if (-e "$tmp/DEBIAN/shlibs") {
204 doit("chmod",644,"$tmp/DEBIAN/shlibs");
205 doit("chown","0:0","$tmp/DEBIAN/shlibs");
208 # dpkg-gensymbols files
209 my $symbols=pkgfile($package, "symbols");
211 # This is done rather than using dpkg-gensymbols
212 # own search for symbols files, since that search
213 # is not 100% compatible with debhelper. (For example,
214 # this supports --ignore being used.)
215 if (! -d "$tmp/DEBIAN") {
216 doit("install","-d","$tmp/DEBIAN");
218 doit("cp", $symbols, "$tmp/DEBIAN/symbols");
219 doit("dpkg-gensymbols", "-p$package", "-O$tmp/DEBIAN/symbols",
220 "-P$tmp", @{$dh{U_PARAMS}});
221 if (-s "$tmp/DEBIAN/symbols" == 0) {
222 doit("rm", "-f", "$tmp/DEBIAN/symbols");
231 This program is a part of debhelper.
235 Joey Hess <joeyh@debian.org>