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|
#!/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 $component eq 'main/';
}
# Remove and override more or less every standard field.
my @dbgsym_options = (qw(
-UPre-Depends -URecommends -USuggests -UEnhances -UProvides -UEssential
-UConflicts -DPriority=optional -UHomepage -UImportant
-DAuto-Built-Package=debug-symbols
),
"-DPackage=${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
|
