r506: * Introduced the debian/compat file. This is the new, preferred way to say

[debhelper.git] / dh_makeshlibs

diff --git a/dh_makeshlibs b/dh_makeshlibs
index bb1d8acd8a715e3a0a8d605c335fa45b80a174f7..3d63991c81fe9de271dea4667cc45e1cabf2cb6f 100755 (executable)
--- a/dh_makeshlibs
+++ b/dh_makeshlibs
@@ -11,7 +11,7 @@ use Debian::Debhelper::Dh_Lib;
 
 =head1 SYNOPSIS
 
-  dh_makeshlibs [debhelper options] [-mmajor] [-V[dependancies]] [-n] [-Xitem]
+B<dh_makeshlibs> [S<I<debhelper options>>] [B<-m>I<major>] [B<-V>I<[dependancies]>] [B<-n>] [B<-X>I<item>]
 
 =head1 DESCRIPTION
 
@@ -19,7 +19,7 @@ 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).
+V3 mode and above only) to any packages which it finds shared libraries in.
 
 =head1 OPTIONS
 
@@ -41,9 +41,15 @@ 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).
+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).
+
+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.
 
 =item B<-n>, B<--noscripts>
 
@@ -129,7 +135,14 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
                                # Call isnative becuase it sets $dh{VERSION}
                                # as a side effect.
                                isnative($package);
-                               $deps="$package (>= $dh{VERSION})";
+                               my $version = $dh{VERSION};
+                               # Old compatability levels include the
+                               # debian revision, while new do not.
+                               if (! compat(3)) {
+                                       # Remove debian version, if any.
+                                       $version =~ s/-[^-]+$//;
+                               }
+                               $deps="$package (>= $version)";
                        }
                }
                if (defined($library) && defined($major) && defined($deps) &&