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-rw-r--r--lib/Debian/Debhelper/Buildsystem/meson.pm158
1 files changed, 158 insertions, 0 deletions
diff --git a/lib/Debian/Debhelper/Buildsystem/meson.pm b/lib/Debian/Debhelper/Buildsystem/meson.pm
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+++ b/lib/Debian/Debhelper/Buildsystem/meson.pm
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+# A debhelper build system class for handling Meson based projects.
+#
+# Copyright: © 2017 Michael Biebl
+# License: GPL-2+
+
+package Debian::Debhelper::Buildsystem::meson;
+
+use strict;
+use warnings;
+use Debian::Debhelper::Dh_Lib qw(compat dpkg_architecture_value is_cross_compiling doit warning error generated_file);
+use parent qw(Debian::Debhelper::Buildsystem);
+
+sub DESCRIPTION {
+ "Meson (meson.build)"
+}
+
+sub IS_GENERATOR_BUILD_SYSTEM {
+ return 1;
+}
+
+sub SUPPORTED_TARGET_BUILD_SYSTEMS {
+ return qw(ninja);
+}
+
+
+sub check_auto_buildable {
+ my $this=shift;
+ my ($step)=@_;
+
+ return 0 unless -e $this->get_sourcepath("meson.build");
+
+ # Handle configure explicitly; inherit the rest
+ return 1 if $step eq "configure";
+ my $ret = $this->get_targetbuildsystem->check_auto_buildable(@_);
+ if ($ret == 0 and $this->check_auto_buildable_clean_oos_buildir(@_)) {
+ # Assume that the package can be cleaned (i.e. the build directory can
+ # be removed) as long as it is built out-of-source tree and can be
+ # configured.
+ $ret++;
+ }
+ return $ret;
+}
+
+sub new {
+ my $class=shift;
+ my $this=$class->SUPER::new(@_);
+ $this->prefer_out_of_source_building(@_);
+ return $this;
+}
+
+sub configure {
+ my $this=shift;
+
+ # Standard set of options for meson.
+ my @opts = (
+ '--wrap-mode=nodownload',
+ );
+ push @opts, "--buildtype=plain";
+ push @opts, "--prefix=/usr";
+ push @opts, "--sysconfdir=/etc";
+ push @opts, "--localstatedir=/var";
+ my $multiarch=dpkg_architecture_value("DEB_HOST_MULTIARCH");
+ push @opts, "--libdir=lib/$multiarch";
+ push(@opts, "--libexecdir=lib/$multiarch") if compat(11);
+
+ if (is_cross_compiling()) {
+ # http://mesonbuild.com/Cross-compilation.html
+ my $cross_file = $ENV{'DH_MESON_CROSS_FILE'};
+ if (not $cross_file) {
+ my $debcrossgen = '/usr/share/meson/debcrossgen';
+ if (not -x $debcrossgen) {
+ warning("Missing debcrossgen (${debcrossgen}) cannot generate a meson cross file and non was provided");
+ error("Cannot cross-compile: Please use meson (>= 0.42.1) or provide a cross file via DH_MESON_CROSS_FILE");
+ }
+ my $filename = generated_file('_source', 'meson-cross-file.conf');
+ my %options = (
+ stdout => '/dev/null',
+ update_env => { LC_ALL => 'C.UTF-8'},
+ );
+ doit(\%options, $debcrossgen, "-o${filename}");
+ $cross_file = $filename;
+ }
+ if ($cross_file !~ m{^/}) {
+ # Make the file name absolute as meson will be called from the build dir.
+ require Cwd;
+ $cross_file =~ s{^\./}{};
+ $cross_file = Cwd::getcwd() . "/${cross_file}";
+ }
+ push(@opts, '--cross-file', $cross_file);
+ }
+
+ $this->mkdir_builddir();
+ eval {
+ my %options = (
+ update_env => { LC_ALL => 'C.UTF-8'},
+ );
+ $this->doit_in_builddir(\%options, "meson", "setup", $this->get_source_rel2builddir(), @opts, @_);
+ };
+ if ($@) {
+ if (-e $this->get_buildpath("meson-logs/meson-log.txt")) {
+ $this->doit_in_builddir('tail', '-v', '-n', '+0', 'meson-logs/meson-log.txt');
+ }
+ die $@;
+ }
+}
+
+sub test {
+ my $this = shift;
+ my $target = $this->get_targetbuildsystem;
+
+ eval {
+ if (compat(12) or $target->NAME ne 'ninja') {
+ $target->test(@_);
+ } else {
+ # In compat 13 with meson+ninja, we prefer using "meson test"
+ # over "ninja test"
+ my %options = (
+ update_env => {
+ 'LC_ALL' => 'C.UTF-8',
+ }
+ );
+ if ($this->get_parallel() > 0) {
+ $options{update_env}{MESON_TESTTHREADS} = $this->get_parallel();
+ }
+ $this->doit_in_builddir(\%options, 'meson', 'test', @_);
+ }
+ };
+ if (my $err = $@) {
+ if (-e $this->get_buildpath("meson-logs/testlog.txt")) {
+ $this->doit_in_builddir('tail', '-v', '-n', '+0', 'meson-logs/testlog.txt');
+ }
+ die $err;
+ }
+ return 1;
+}
+
+sub install {
+ my ($this, $destdir, @args) = @_;
+ my $target = $this->get_targetbuildsystem;
+
+ if (compat(13) or $target->NAME ne 'ninja') {
+ $target->install($destdir, @args);
+ } else {
+ # In compat 14 with meson+ninja, we prefer using "meson install"
+ # over "ninja install"
+ my %options = (
+ update_env => {
+ 'LC_ALL' => 'C.UTF-8',
+ }
+ );
+ $this->doit_in_builddir(\%options, 'meson', 'install', '--destdir', $destdir, @args);
+ }
+ return 1;
+}
+
+
+
+1