Linux build: Use sysroot when calculating dependencies

third_party/dpkg-dev/scripts/Dpkg/Vendor/Ubuntu.pm

+# Copyright © 2008 Ian Jackson <ian@davenant.greenend.org.uk>
+# Copyright © 2008 Canonical, Ltd.
+#   written by Colin Watson <cjwatson@ubuntu.com>
+# Copyright © 2008 James Westby <jw+debian@jameswestby.net>
+# Copyright © 2009 Raphaël Hertzog <hertzog@debian.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package Dpkg::Vendor::Ubuntu;
+
+use strict;
+use warnings;
+
+our $VERSION = '0.01';
+
+use Dpkg::ErrorHandling;
+use Dpkg::Gettext;
+use Dpkg::Path qw(find_command);
+use Dpkg::Control::Types;
+use Dpkg::BuildOptions;
+use Dpkg::Arch qw(debarch_eq get_host_arch);
+
+use parent qw(Dpkg::Vendor::Debian);
+
+=encoding utf8
+
+=head1 NAME
+
+Dpkg::Vendor::Ubuntu - Ubuntu vendor object
+
+=head1 DESCRIPTION
+
+This vendor object customize the behaviour of dpkg-source
+to check that Maintainers have been modified if necessary.
+
+=cut
+
+sub run_hook {
+    my ($self, $hook, @params) = @_;
+
+    if ($hook eq 'before-source-build') {
+        my $src = shift @params;
+        my $fields = $src->{fields};
+
+        # check that Maintainer/XSBC-Original-Maintainer comply to
+        # https://wiki.ubuntu.com/DebianMaintainerField
+        if (defined($fields->{'Version'}) and defined($fields->{'Maintainer'}) and
+           $fields->{'Version'} =~ /ubuntu/) {
+           if ($fields->{'Maintainer'} !~ /ubuntu/i) {
+               if (defined ($ENV{DEBEMAIL}) and $ENV{DEBEMAIL} =~ /\@ubuntu\.com/) {
+                   error(_g('Version number suggests Ubuntu changes, but Maintainer: does not have Ubuntu address'));
+               } else {
+                   warning(_g('Version number suggests Ubuntu changes, but Maintainer: does not have Ubuntu address'));
+               }
+           }
+           unless ($fields->{'Original-Maintainer'}) {
+               warning(_g('Version number suggests Ubuntu changes, but there is no XSBC-Original-Maintainer field'));
+           }
+        }
+
+    } elsif ($hook eq 'keyrings') {
+        my @keyrings = $self->SUPER::run_hook($hook);
+
+        push(@keyrings, '/usr/share/keyrings/ubuntu-archive-keyring.gpg');
+        return @keyrings;
+
+    } elsif ($hook eq 'register-custom-fields') {
+        my @field_ops = $self->SUPER::run_hook($hook);
+        push @field_ops,
+            [ 'register', 'Launchpad-Bugs-Fixed',
+              CTRL_FILE_CHANGES | CTRL_CHANGELOG  ],
+            [ 'insert_after', CTRL_FILE_CHANGES, 'Closes', 'Launchpad-Bugs-Fixed' ],
+            [ 'insert_after', CTRL_CHANGELOG, 'Closes', 'Launchpad-Bugs-Fixed' ];
+        return @field_ops;
+
+    } elsif ($hook eq 'post-process-changelog-entry') {
+        my $fields = shift @params;
+
+        # Add Launchpad-Bugs-Fixed field
+        my $bugs = find_launchpad_closes($fields->{'Changes'} || '');
+        if (scalar(@$bugs)) {
+            $fields->{'Launchpad-Bugs-Fixed'} = join(' ', @$bugs);
+        }
+
+    } elsif ($hook eq 'update-buildflags') {
+        my $flags = shift @params;
+        my $build_opts = Dpkg::BuildOptions->new();
+
+        if (!$build_opts->has('noopt')) {
+            if (debarch_eq(get_host_arch(), 'ppc64el')) {
+                for my $flag (qw(CFLAGS CXXFLAGS GCJFLAGS FFLAGS)) {
+                    $flags->set($flag, '-g -O3', 'vendor');
+                }
+            }
+        }
+        # Per https://wiki.ubuntu.com/DistCompilerFlags
+        $flags->set('LDFLAGS', '-Wl,-Bsymbolic-functions', 'vendor');
+
+        # Run the Debian hook to add hardening flags
+        $self->SUPER::run_hook($hook, $flags);
+
+        # Allow control of hardening-wrapper via dpkg-buildpackage DEB_BUILD_OPTIONS
+        my $hardening;
+        if ($build_opts->has('hardening')) {
+            $hardening = $build_opts->get('hardening') // 1;
+        }
+        if ($build_opts->has('nohardening')) {
+            $hardening = 0;
+        }
+        if (defined $hardening) {
+            my $flag = 'DEB_BUILD_HARDENING';
+            if ($hardening ne '0') {
+                if (!find_command('hardened-cc')) {
+                    syserr(_g("'hardening' flag found but 'hardening-wrapper' not installed"));
+                }
+                if ($hardening ne '1') {
+                    my @options = split(/,\s*/, $hardening);
+                    $hardening = 1;
+
+                    my @hardopts = qw(format fortify stackprotector pie relro);
+                    foreach my $item (@hardopts) {
+                        my $upitem = uc($item);
+                        foreach my $option (@options) {
+                            if ($option =~ /^(no)?$item$/) {
+                                $flags->set($flag . '_' . $upitem,
+                                            not defined $1 or $1 eq '', 'env');
+                            }
+                        }
+                    }
+                }
+            }
+            if (defined $ENV{$flag}) {
+                info(_g('overriding %s in environment: %s'), $flag, $hardening);
+            }
+            $flags->set($flag, $hardening, 'env');
+        }
+
+    } else {
+        return $self->SUPER::run_hook($hook, @params);
+    }
+
+}
+
+=head1 PUBLIC FUNCTIONS
+
+=over
+
+=item $bugs = Dpkg::Vendor::Ubuntu::find_launchpad_closes($changes)
+
+Takes one string as argument and finds "LP: #123456, #654321" statements,
+which are references to bugs on Launchpad. Returns all closed bug
+numbers in an array reference.
+
+=cut
+
+sub find_launchpad_closes {
+    my ($changes) = @_;
+    my %closes;
+
+    while ($changes &&
+          ($changes =~ /lp:\s+\#\d+(?:,\s*\#\d+)*/ig)) {
+        $closes{$_} = 1 foreach($& =~ /\#?\s?(\d+)/g);
+    }
+
+    my @closes = sort { $a <=> $b } keys %closes;
+
+    return \@closes;
+}
+
+=back
+
+=cut
+
+1;