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Diffstat (limited to '')
| -rwxr-xr-x | dh_gencontrol | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/dh_gencontrol b/dh_gencontrol new file mode 100755 index 0000000..18275b9 --- /dev/null +++ b/dh_gencontrol @@ -0,0 +1,218 @@ +#!/usr/bin/perl + +=head1 NAME + +dh_gencontrol - generate and install control file + +=cut + +use strict; +use warnings; +use Errno qw(ENOENT); +use Debian::Debhelper::Dh_Lib; + +our $VERSION = DH_BUILTIN_VERSION; + +=head1 SYNOPSIS + +B<dh_gencontrol> [S<I<debhelper options>>] [S<B<--> I<params>>] + +=head1 DESCRIPTION + +B<dh_gencontrol> is a debhelper program that is responsible for generating +control files, and installing them into the I<DEBIAN> directory with the +proper permissions. + +This program is merely a wrapper around L<dpkg-gencontrol(1)>, which +calls it once for each package being acted on (plus related dbgsym +packages), and passes in some additional useful flags. + +B<Note> that if you use B<dh_gencontrol>, you must also use +L<dh_builddeb(1)> to build the packages. Otherwise, your build may +fail to build as B<dh_gencontrol> (via L<dpkg-gencontrol(1)>) declares +which packages are built. As debhelper automatically generates dbgsym +packages, it some times adds additional packages, which will be built +by L<dh_builddeb(1)>. + + +=head1 OPTIONS + +=over 4 + +=item B<--> I<params> + +Pass I<params> to L<dpkg-gencontrol(1)>. + +=item B<-u>I<params>, B<--dpkg-gencontrol-params=>I<params> + +This is another way to pass I<params> to L<dpkg-gencontrol(1)>. +It is deprecated; use B<--> instead. + +=back + +=cut + +init(options => { + "dpkg-gencontrol-params=s", => \$dh{U_PARAMS}, +}); + +sub ensure_substvars_are_present { + my ($file, @substvars) = @_; + my (%vars, $fd); + return 1 if $dh{NO_ACT}; + if (open($fd, '+<', $file)) { + while (my $line = <$fd>) { + my $k; + ($k, undef) = split(m/=/, $line, 2); + $vars{$k} = 1 if $k; + } + # Fall-through and append the missing vars if any. + } else { + error("open(${file}) failed: $!") if $! != ENOENT; + open($fd, '>', $file) or error("open(${file}) failed: $!"); + } + + for my $var (@substvars) { + if (not exists($vars{$var})) { + verbose_print("echo ${var}= >> ${file}"); + print ${fd} "${var}=\n"; + $vars{$var} = 1; + } + } + close($fd) or error("close(${file}) failed: $!"); + return 1; +} + +on_pkgs_in_parallel { + foreach my $package (@_) { + my $tmp=tmpdir($package); + my $ext=pkgext($package); + my $dbgsym_info_dir = "debian/.debhelper/${package}"; + my $dbgsym_tmp = dbgsym_tmpdir($package); + + my $substvars="debian/${ext}substvars"; + + my $changelog=pkgfile($package,'changelog'); + if (! $changelog) { + $changelog='debian/changelog'; + } + + install_dir("$tmp/DEBIAN"); + + # avoid gratuitous warnings + ensure_substvars_are_present($substvars, 'misc:Depends', 'misc:Pre-Depends'); + + my (@debug_info_params, $build_ids, @multiarch_params); + if ( -d $dbgsym_info_dir ) { + $build_ids = read_dbgsym_build_ids($dbgsym_info_dir); + } + + if ( -d $dbgsym_tmp) { + my $multiarch = package_multiarch($package); + my $section = package_section($package); + my $replaces = read_dbgsym_migration($dbgsym_info_dir); + my $component = ''; + if ($section =~ m{^(.*)/[^/]+$}) { + $component = "${1}/"; + # This should not happen, but lets not propagate the error + # if does. + $component = '' if $component eq 'main/'; + } + + # Remove and override more or less every standard field. + my @dbgsym_options = (qw( + -UPre-Depends -URecommends -USuggests -UEnhances -UProvides -UEssential + -UConflicts -DPriority=optional -UHomepage -UImportant + -UBuilt-Using -DAuto-Built-Package=debug-symbols + -UProtected + ), + "-DPackage=${package}-dbgsym", + "-DDepends=${package} (= \${binary:Version})", + "-DDescription=debug symbols for ${package}", + "-DBuild-Ids=${build_ids}", + "-DSection=${component}debug", + ); + push(@dbgsym_options, "-DPackage-Type=${\DBGSYM_PACKAGE_TYPE}") + if DBGSYM_PACKAGE_TYPE ne DEFAULT_PACKAGE_TYPE; + # Disable multi-arch unless the original package is an + # multi-arch: same package. In all other cases, we do not + # need a multi-arch value. + if ($multiarch ne 'same') { + push(@dbgsym_options, '-UMulti-Arch'); + } + # If the dbgsym package is replacing an existing -dbg package, + # then declare the necessary Breaks + Replaces. Otherwise, + # clear the fields. + if ($replaces) { + push(@dbgsym_options, "-DReplaces=${replaces}", + "-DBreaks=${replaces}"); + } else { + push(@dbgsym_options, '-UReplaces', '-UBreaks'); + } + install_dir("${dbgsym_tmp}/DEBIAN"); + doit("dpkg-gencontrol", "-p${package}", "-l$changelog", "-T$substvars", + "-P${dbgsym_tmp}",@{$dh{U_PARAMS}}, @dbgsym_options); + + reset_perm_and_owner(0644, "${dbgsym_tmp}/DEBIAN/control"); + } elsif ($build_ids) { + # Only include the build-id if there is no dbgsym package (if + # there is a dbgsym package, the build-ids into the control + # file of the dbgsym package) + push(@debug_info_params, "-DBuild-Ids=${build_ids}"); + } + + # Remove explicit "Multi-Arch: no" headers to avoid autorejects by dak. + push (@multiarch_params, '-UMulti-Arch') + if (package_multiarch($package) eq 'no'); + + # Generate and install control file. + doit("dpkg-gencontrol", "-p$package", "-l$changelog", "-T$substvars", + "-P$tmp", @debug_info_params, @multiarch_params, + @{$dh{U_PARAMS}}); + + # This chmod is only necessary if the user sets the umask to + # something odd. + reset_perm_and_owner(0644, "${tmp}/DEBIAN/control"); + } +}; + +sub read_dbgsym_file { + my ($dbgsym_info_file, $dbgsym_info_dir) = @_; + my $dbgsym_path = "${dbgsym_info_dir}/${dbgsym_info_file}"; + my $result; + if (-f $dbgsym_path) { + open(my $fd, '<', $dbgsym_path) + or error("open $dbgsym_path failed: $!"); + chomp($result = <$fd>); + $result =~ s/\s++$//; + close($fd); + } + return $result; +} + +sub read_dbgsym_migration { + return read_dbgsym_file('dbgsym-migration', @_); +} + +sub read_dbgsym_build_ids { + my $res = read_dbgsym_file('dbgsym-build-ids', @_); + my (%seen, @unique); + return '' if not defined($res); + for my $id (split(' ', $res)) { + next if $seen{$id}++; + push(@unique, $id); + } + return join(' ', @unique); +} + +=head1 SEE ALSO + +L<debhelper(7)> + +This program is a part of debhelper. + +=head1 AUTHOR + +Joey Hess <joeyh@debian.org> + +=cut |