r1614: * Patch from Andrew Suffield <asuffield@debian.org> to make dh_strip

[debhelper.git] / dh_strip

diff --git a/dh_strip b/dh_strip
index 9e107f46ba867603317fdd61709ddd2e11495450..8543a4ecfa2435fe49edb9e14f2ddef77faa9688 100755 (executable)
--- a/dh_strip
+++ b/dh_strip
@@ -12,7 +12,7 @@ use Debian::Debhelper::Dh_Lib;
 
 =head1 SYNOPSIS
 
-B<dh_strip> [S<I<debhelper options>>] [B<-X>I<item>]
+B<dh_strip> [S<I<debhelper options>>] [B<-X>I<item>] [--dbg-package=package] [--keep-debug]
 
 =head1 DESCRIPTION
 
@@ -42,6 +42,28 @@ Exclude files that contain "item" anywhere in their filename from being
 stripped. You may use this option multiple times to build up a list of
 things to exclude.
 
+=item B<--dbg-package=>I<package>
+
+This option tells dh_strip that the given package has an associated "-dbg"
+package. dh_strip will, when stripping off the debug symbols of files in
+the given package, save them to independent files in the package build
+directory for the "-dbg" package.
+
+For example, you might have a package libfoo libfoo, and want to include a
+libfoo-dbg package that contains debugging symbols. The command "dh_strip
+--dbg-package=libfoo" will make dh_strip save the debugging symbols for
+usr/lib/libfoo.so.0 into usr/lib/debug/usr/lib/libfoo.so.0 in the package
+build directory for libfoo-dbg. If libfoo-dbg is installed, gdb wil
+automatically load up the debugging symbols from it when debugging libfoo.
+
+This option may be repeated to list more than one package.
+
+=item B<-k>, B<--keep-debug>
+
+Debug symbols will be retained, but split into an independant
+file in usr/lib/debug/ in the package build directory. --dbg-package
+is easier to use than this option, but this option is more flexible.
+
 =back
 
 =head1 NOTES
@@ -118,22 +140,57 @@ sub testfile {
        }
 }
 
+sub make_debug {
+       my $file=shift;
+       my $tmp=shift;
+       my $desttmp=shift;
+
+       my ($base_file)=$file=~/^$tmp(.*)/;
+       my $debug_path=$desttmp."/usr/lib/debug/".$base_file;
+       my $debug_dir=dirname($debug_path);
+       if (! -d $debug_dir) {
+               doit("install", "-d", $debug_dir);
+       }
+       doit("objcopy", "--only-keep-debug", $file, $debug_path);
+       # No reason for this to be executable.
+       doit("chmod", 644, $debug_path);
+       return $debug_path;
+}
+
+sub attach_debug {
+       my $file=shift;
+       my $debug_path=shift;
+       doit("objcopy", "--add-gnu-debuglink", $debug_path, $file);
+}
+
 foreach my $package (@{$dh{DOPACKAGES}}) {
        my $tmp=tmpdir($package);
 
+       # Support for keeping the debugging symbols in a detached file.
+       my $keep_debug=$dh{KEEP_DEBUG};
+       my $debugtmp=$tmp;
+       if (ref $dh{DEBUGPACKAGES} && grep { $_ eq $package } @{$dh{DEBUGPACKAGES}}) {
+               $keep_debug=1;
+               $debugtmp=tmpdir($package."-dbg");
+       }
+       
        @shared_libs=@executables=@static_libs=();
        find(\&testfile,$tmp);
 
        foreach (@shared_libs) {
+               my $debug_path = make_debug($_, $tmp, $debugtmp) if $keep_debug;
                # Note that all calls to strip on shared libs
                # *must* inclde the --strip-unneeded.
                doit("strip","--remove-section=.comment",
                        "--remove-section=.note","--strip-unneeded",$_);
+               attach_debug($_, $debug_path) if $keep_debug;
        }
        
        foreach (@executables) {
+               my $debug_path = make_debug($_, $tmp, $debugtmp) if $keep_debug;
                doit("strip","--remove-section=.comment",
                        "--remove-section=.note",$_);
+               attach_debug($_, $debug_path) if $keep_debug
        }
 
        foreach (@static_libs) {