dh_shlibdeps

   1 #!/usr/bin/perl -w
   2
   3 =head1 NAME
   4
   5 dh_shlibdeps - calculate shared library dependancies
   6
   7 =cut
   8
   9 use strict;
  10 use Cwd;
  11 use Debian::Debhelper::Dh_Lib;
  12
  13 =head1 SYNOPSIS
  14
  15   dh_shlibdeps [debhelper options] [-ldirectory] [-Xitem] [-- params]
  16
  17 =head1 DESCRIPTION
  18
  19 dh_shlibdeps is a debhelper program that is responsible for calculating
  20 shared library dependancies for packages.
  21
  22 This program is merely a wrapper around L<dpkg-shlibdeps(1)> that calls it
  23 once for each package listed in the control file, passing it
  24 a list of ELF executables and shared libraries it has found.
  25
  26 =head1 OPTIONS
  27
  28 =over 4
  29
  30 =item B<-u>I<params>, B<--dpkg-shlibdeps-params=>I<params>
  31
  32 =item B<--> I<params>
  33
  34 Pass "params" to L<dpkg-shlibdeps(1)>.
  35
  36 =item B<-X>I<item>, B<--exclude=>I<item>
  37
  38 Exclude files that contain "item" anywhere in their filename from being
  39 passed to dpkg-shlibdeps. This will make their dependancies be ignored.
  40 This may be useful in some situations, but use it with caution. This option
  41 may be used more than once to exclude more than one thing.
  42
  43 =item B<-l>I<directory>[:directory:directory:..]
  44
  45 Before dpkg-shlibdeps is run, LD_LIBRARY_PATH will be set to the
  46 specified directory (or directories -- separate with colons). This is
  47 useful for multi-binary packages where a library is built in one
  48 package and another package contains binaries linked against said
  49 library. Relative paths will be made absolute for the benefit of
  50 dpkg-shlibdeps.
  51
  52 =back
  53
  54 =cut
  55
  56 init();
  57
  58 foreach my $package (@{$dh{DOPACKAGES}}) {
  59         my $tmp=tmpdir($package);
  60         my $ext=pkgext($package);
  61
  62         my @filelist;
  63         my $ff;
  64
  65         # Generate a list of ELF binaries in the package, ignoring any
  66         # we were told to exclude.
  67         my $find_options='';
  68         if (defined($dh{EXCLUDE_FIND}) && $dh{EXCLUDE_FIND} ne '') {
  69                 $find_options="! \\( $dh{EXCLUDE_FIND} \\)";
  70         }
  71         foreach my $file (split(/\n/,`find $tmp -type f \\( -perm +111 -or -name "*.so*" \\) $find_options`)) {
  72                 # TODO: this is slow, optimize. Ie, file can run once on multiple files..
  73                 $ff=`file "$file"`;
  74                 if ($ff=~m/ELF/ && $ff!~/statically linked/) {
  75                         push @filelist,$file;
  76                 }
  77         }
  78
  79         if (@filelist) {
  80                 if ($dh{L_PARAMS}) {
  81                         my @paths=();
  82                         foreach (split(/:/, $dh{L_PARAMS})) {
  83                                 # Force the path absolute.
  84                                 if (m:^/:) {
  85                                         push @paths, $_;
  86                                 }
  87                                 else {
  88                                         push @paths, getcwd()."/$_";
  89                                 }
  90                         }
  91                         $dh{L_PARAMS}=join(':', @paths);
  92                         $ENV{'LD_LIBRARY_PATH'}=$dh{L_PARAMS};
  93                         verbose_print("LD_LIBRARY_PATH=$dh{L_PARAMS} \\");
  94                 }
  95                 doit("dpkg-shlibdeps","-Tdebian/${ext}substvars",@{$dh{U_PARAMS}},'-dDepends',@filelist);
  96         }
  97 }
  98
  99 =head1 SEE ALSO
 100
 101 L<debhelper(1)>
 102
 103 This program is a part of debhelper.
 104
 105 =head1 AUTHOR
 106
 107 Joey Hess <joeyh@debian.org>
 108
 109 =cut