r1892: * dh_install: swap two paras in man page for clarity. Closes: #359182

[debhelper.git] / dh_makeshlibs

diff --git a/dh_makeshlibs b/dh_makeshlibs
index 1d57b01eb0842c603d6c62a09abc131a96c900b2..1a1ddcc5380dddc62d4b188f622f390329c7ab68 100755 (executable)
--- a/dh_makeshlibs
+++ b/dh_makeshlibs
@@ -11,7 +11,7 @@ use Debian::Debhelper::Dh_Lib;
 
 =head1 SYNOPSIS
 
-B<dh_makeshlibs> [S<I<debhelper options>>] [B<-m>I<major>] [B<-V>I<[dependancies]>] [B<-n>] [B<-X>I<item>]
+B<dh_makeshlibs> [S<I<debhelper options>>] [B<-m>I<major>] [B<-V>I<[dependencies]>] [B<-n>] [B<-X>I<item>]
 
 =head1 DESCRIPTION
 
@@ -32,24 +32,28 @@ 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<-V>, B<-V>I<dependencies>
 
-=item B<--version-info>, B<--version-info=>I<dependancies>
+=item B<--version-info>, B<--version-info=>I<dependencies>
 
 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).
+information to the shlibs file. If -V is specified with no dependency
+information, the current upstream version of the package is plugged into a
+dependency that looks like "packagename (>= packageversion)". Note that in
+debhelper compatibility levels before v4, the debian part of the package
+version number is also included. If -V is specified with parameters, the
+parameters can be used to specify the exact dependency information needed
+(be sure to include the package name).
 
 Beware of using -V without any parameters; this is a conservative setting
 that always ensures that other packages' shared library dependencies are at
-least as tight as they need to be, so that if the maintainer screws up then
-they won't break. The flip side is that packages might end up with
-dependencies that are too tight and so find it harder to be upgraded.
+least as tight as they need to be (unless your library is prone to changing
+ABI without updating the upstream version number), so that if the
+maintainer screws up then they won't break. The flip side is that packages
+might end up with dependencies that are too tight and so find it harder to
+be upgraded.
 
 =item B<-n>, B<--noscripts>
 
@@ -60,27 +64,36 @@ Do not modify postinst/postrm scripts.
 Exclude files that contain "item" anywhere in their filename or directory 
 from being treated as shared libraries.
 
+=item B<--add-udeb=>I<udeb>
+
+Create an additional line for udebs in the shlibs file and use "udeb" as the
+package name for udebs to depend on instead of the regular library package.
+
 =back
 
 =head1 EXAMPLES
 
- dh_makeshlibs
+=over 4
+
+=item dh_makeshlibs
 
 Assuming this is a package named libfoobar1, generates a shlibs file that
 looks something like:
  libfoobar 1 libfoobar1
 
- dh_makeshlibs -V
+=item dh_makeshlibs -V
 
-Assuming the current version of the package is 1.0-3, generates a shlibs
+Assuming the current version of the package is 1.1-3, generates a shlibs
 file that looks something like:
- libfoobar 1 libfoobar1 (>= 1.0-3)
+ libfoobar 1 libfoobar1 (>= 1.1)
 
- dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
+=item dh_makeshlibs -V 'libfoobar1 (>= 1.0)'
 
 Generates a shlibs file that looks something like:
   libfoobar 1 libfoobar1 (>= 1.0)
 
+=back
+
 =cut
 
 init();
@@ -103,6 +116,7 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
        # because only if we can get a library name and a major number from
        # objdump is anything actually added.
        my $exclude='';
+       my @udeb_lines;
        if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
                $exclude="! \\( $dh{EXCLUDE_FIND} \\) ";
        }
@@ -138,7 +152,7 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
                                # as a side effect.
                                isnative($package);
                                my $version = $dh{VERSION};
-                               # Old compatability levels include the
+                               # Old compatibility levels include the
                                # debian revision, while new do not.
                                if (! compat(3)) {
                                        # Remove debian version, if any.
@@ -155,11 +169,22 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
                        if (! $seen{$line}) {
                                $seen{$line}=1;
                                complex_doit("echo '$line' >>$tmp/DEBIAN/shlibs");
+                               if (defined($dh{SHLIBS_UDEB}) && $dh{SHLIBS_UDEB} ne '') {
+                                       my $udeb_deps = $deps;
+                                       $udeb_deps =~ s/$package/$dh{SHLIBS_UDEB}/e;
+                                       $line="udeb: "."$library $major $udeb_deps";
+                                       push @udeb_lines, $line;
+                               }
                        }
                }
        }
        close FIND;
 
+       # Write udeb: lines last.
+       foreach (@udeb_lines) {
+               complex_doit("echo '$_' >>$tmp/DEBIAN/shlibs");
+       }
+
        # New as of dh_v3.
        if (! compat(2) && ! $dh{NOSCRIPTS} && $need_ldconfig) {
                autoscript($package,"postinst","postinst-makeshlibs");