r1785: * dh_shlibdeps: Avoid a use strict warning in some cases if

[debhelper.git] / dh_shlibdeps

diff --git a/dh_shlibdeps b/dh_shlibdeps
index 274aeeda027a93e51c388f4a498de3a20b2ce3cc..b5b0ff5c7f01f135b4e86719719b9ac92365f433 100755 (executable)
--- a/dh_shlibdeps
+++ b/dh_shlibdeps
@@ -2,7 +2,7 @@
 
 =head1 NAME
 
-dh_shlibdeps - calculate shared library dependancies
+dh_shlibdeps - calculate shared library dependencies
 
 =cut
 
@@ -12,12 +12,12 @@ use Debian::Debhelper::Dh_Lib;
 
 =head1 SYNOPSIS
 
-  dh_shlibdeps [debhelper options] [-ldirectory] [-Xitem] [-- params]
+B<dh_shlibdeps> [S<I<debhelper options>>] [B<-L>I<package>] [B<-l>I<directory>] [B<-X>I<item>] [S<B<--> I<params>>]
 
 =head1 DESCRIPTION
 
 dh_shlibdeps is a debhelper program that is responsible for calculating
-shared library dependancies for packages.
+shared library dependencies for packages.
 
 This program is merely a wrapper around L<dpkg-shlibdeps(1)> that calls it
 once for each package listed in the control file, passing it
@@ -36,7 +36,7 @@ Pass "params" to L<dpkg-shlibdeps(1)>.
 =item B<-X>I<item>, B<--exclude=>I<item>
 
 Exclude files that contain "item" anywhere in their filename from being
-passed to dpkg-shlibdeps. This will make their dependancies be ignored.
+passed to dpkg-shlibdeps. This will make their dependencies be ignored.
 This may be useful in some situations, but use it with caution. This option
 may be used more than once to exclude more than one thing.
 
@@ -49,12 +49,54 @@ package and another package contains binaries linked against said
 library. Relative paths will be made absolute for the benefit of
 dpkg-shlibdeps.
 
+Note that the directory given should be the complete or relative path to
+a directory that contains the library. See example below.
+
+=item B<-L>I<package>, B<--libpackage=>I<package>
+
+Use the shlibs file automatically generated by dh_makeshlibs for the named
+package as a kind of automatically generated shlibs.local file. You can use
+this switch in concert with the -l switch to make dpkg-shlibdeps find a
+library built as part of the current package, and get the shlibs information.
+See example below.
+
 =back
 
+=head1 EXAMPLES
+
+Suppose that your source package produces libfoo1, libfoo-dev, and
+libfoo-bin binary packages. libfoo-bin links against libfoo1, and should
+depend on it. In your rules file, first run dh_makeshlibs, then dh_shlibdeps:
+
+       dh_makeshlibs
+       dh_shlibdeps -L libfoo1 -l debian/libfoo1/usr/lib
+
+This will have the effect of generating automatically a shlibs file for
+libfoo1, and using that file and the libfoo1 library in the
+debian/libfoo1/usr/lib directory to calculate shared library dependency
+information.
+
 =cut
 
 init();
 
+if ($dh{L_PARAMS}) {
+       my @paths=();
+       # Add to existing paths, if set.
+       push @paths, $ENV{'LD_LIBRARY_PATH'}
+               if exists $ENV{'LD_LIBRARY_PATH'};
+       foreach (split(/:/, $dh{L_PARAMS})) {
+               # Force the path absolute.
+               if (m:^/:) {
+                       push @paths, $_;
+               }
+               else {
+                       push @paths, getcwd()."/$_";
+               }
+       }
+       $dh{L_PARAMS}=join(':', @paths);
+}
+
 foreach my $package (@{$dh{DOPACKAGES}}) {
        my $tmp=tmpdir($package);
        my $ext=pkgext($package);
@@ -68,8 +110,9 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
        if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
                $find_options="! \\( $dh{EXCLUDE_FIND} \\)";
        }
-       foreach my $file (split(/\n/,`find $tmp -type f \\( -perm +111 -or -name "*.so*" \\) $find_options`)) {
-               # TODO: this is slow, optimize. Ie, file can run once on multiple files..
+       foreach my $file (split(/\n/,`find $tmp -path $tmp/usr/lib/debug -prune -or -type f \\( -perm +111 -or -name "*.so*" \\) $find_options -print`)) {
+               # TODO this is slow, optimize. Ie, file can run once on
+               # multiple files..
                $ff=`file "$file"`;
                if ($ff=~m/ELF/ && $ff!~/statically linked/) {
                        push @filelist,$file;
@@ -77,31 +120,34 @@ foreach my $package (@{$dh{DOPACKAGES}}) {
        }
 
        if (@filelist) {
+               my @opts;
+               if (defined $dh{LIBPACKAGE} && length $dh{LIBPACKAGE}) {
+                       @opts=("-L".tmpdir($dh{LIBPACKAGE}."/DEBIAN/shlibs"));
+               }
+               
+               my $ld_library_path_orig=$ENV{LD_LIBRARY_PATH};
                if ($dh{L_PARAMS}) {
-                       my @paths=();
-                       # Add to existing paths, if set.
-                       push @paths, $ENV{'LD_LIBRARY_PATH'}
-                               if exists $ENV{'LD_LIBRARY_PATH'};
-                       foreach (split(/:/, $dh{L_PARAMS})) {
-                               # Force the path absolute.
-                               if (m:^/:) {
-                                       push @paths, $_;
-                               }
-                               else {
-                                       push @paths, getcwd()."/$_";
-                               }
+                       $ENV{LD_LIBRARY_PATH}=$dh{L_PARAMS};
+                       verbose_print("LD_LIBRARY_PATH=$dh{L_PARAMS}");
+               }
+               
+               doit("dpkg-shlibdeps","-Tdebian/${ext}substvars",
+                       @opts,@{$dh{U_PARAMS}},@filelist);
+
+               if ($dh{L_PARAMS}) {
+                       if (defined $ld_library_path_orig) {
+                               $ENV{LD_LIBRARY_PATH}=$ld_library_path_orig;
+                       }
+                       else {
+                               delete $ENV{LD_LIBRARY_PATH};
                        }
-                       $dh{L_PARAMS}=join(':', @paths);
-                       $ENV{'LD_LIBRARY_PATH'}=$dh{L_PARAMS};
-                       verbose_print("LD_LIBRARY_PATH=$dh{L_PARAMS} \\");
                }
-               doit("dpkg-shlibdeps","-Tdebian/${ext}substvars",@{$dh{U_PARAMS}},'-dDepends',@filelist);
        }
 }
 
 =head1 SEE ALSO
 
-L<debhelper(1)>
+L<debhelper(7)>, L<dpkg-shlibdeps(1)>
 
 This program is a part of debhelper.