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# A module for loading and managing debhelper buildsystem plugins.
# This module is intended to be used by all dh_auto_* helper commands.
#
# Copyright: © 2009 Modestas Vainius
# License: GPL-2+
package Debian::Debhelper::Dh_Buildsystems;
use strict;
use warnings;
use Debian::Debhelper::Dh_Lib;
use base 'Exporter';
our @EXPORT=qw(&buildsystems_init &buildsystems_do &load_buildsystem);
# XXX JEH as noted, this has to match historical order for back-compat
# XXX MDX Current dh_auto_* look like:
# configure: autotools, perl_makemaker, perl_build
# build: makefile, python_distutils, perl_build
# test: makefile, perl_build
# install: makefile (with perl_makermaker) hack, python_distutils, perl_build
# clean: makefile, python_distutils, perl_build
# So historical @BUILDSYSTEMS order (as per autodetection, see
# is_auto_buildable() of the respective classes):
# autotools (+configure; the rest - next class)
# python_distutils (+build +install +clean; the rest - next class)
# perl_makemaker (+configure +install (special hack); the rest - next class)
# makefile (+build +test +install +clean; configure - next class)
# perl_build (handles everything)
# XXX JEH I think that makes sense..
# Historical order must be kept for backwards compatibility. New
# buildsystems MUST be added to the END of the list.
our @BUILDSYSTEMS = (
"autotools",
"python_distutils",
"perl_makemaker",
"makefile",
"perl_build",
"cmake",
);
sub create_buildsystem_instance {
my $system=shift;
my %bsopts=@_;
my $module = "Debian::Debhelper::Buildsystem::$system";
eval "use $module";
if ($@) {
error("unable to load buildsystem class '$system': $@");
}
if (!exists $bsopts{builddir} && exists $dh{BUILDDIR}) {
$bsopts{builddir} = $dh{BUILDDIR};
}
return $module->new(%bsopts);
}
sub load_buildsystem {
my ($action, $system)=@_;
if (defined $system) {
my $inst = create_buildsystem_instance($system);
verbose_print("Selected buildsystem (specified): ".$inst->NAME());
return $inst;
}
else {
# Try to determine build system automatically
for $system (@BUILDSYSTEMS) {
my $inst = create_buildsystem_instance($system, is_auto=>1);
if ($inst->is_auto_buildable($action)) {
verbose_print("Selected buildsystem (auto): ". $inst->NAME());
return $inst;
}
}
}
return;
}
sub list_buildsystems {
for my $system (@BUILDSYSTEMS) {
my $inst = create_buildsystem_instance($system);
printf("%s - %s.\n", $inst->NAME(), $inst->DESCRIPTION());
}
}
sub buildsystems_init {
my %args=@_;
# TODO: Not documented in the manual pages yet.
# Initialize options from environment variables
# XXX JEH I think these should be my variables, they are only used
# inside this one file so putting them in the global %dh hash seems
# unnecessary.
if (exists $ENV{DH_AUTO_BUILDDIRECTORY}) {
$dh{BUILDDIR} = $ENV{DH_AUTO_BUILDDIRECTORY};
}
if (exists $ENV{DH_AUTO_BUILDSYSTEM}) {
$dh{BUILDSYS} = $ENV{DH_AUTO_BUILDSYSTEM};
}
# Available command line options
my $list_bs = sub { list_buildsystems(); exit 0 };
my $set_builddir = sub { $dh{BUILDDIR} = $_[1] };
my %options = (
"b:s" => $set_builddir,
"build-directory:s" => $set_builddir,
"builddirectory:s" => $set_builddir,
"m=s" => \$dh{BUILDSYS},
"build-system=s" => \$dh{BUILDSYS},
"buildsystem=s" => \$dh{BUILDSYS},
"l" => $list_bs,
"--list" => $list_bs,
);
map { $args{options}{$_} = $options{$_} } keys(%options);
Debian::Debhelper::Dh_Lib::init(%args);
}
sub buildsystems_do {
my $action=shift;
if (!defined $action) {
$action = basename($0);
$action =~ s/^dh_auto_//;
}
if (grep(/^\Q$action\E$/, qw{configure build test install clean}) == 0) {
error("unrecognized auto action: ".basename($0));
}
my $buildsystem = load_buildsystem($action, $dh{BUILDSYS});
if (defined $buildsystem) {
$buildsystem->pre_action($action);
$buildsystem->$action(@_, @{$dh{U_PARAMS}});
$buildsystem->post_action($action);
}
return 0;
}
1;
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