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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);
# Historical order must be kept for backwards compatibility. New
# buildsystems MUST be added to the END of the list.
our @BUILDSYSTEMS = (
"autotools",
"perl_makemaker",
"makefile",
"python_distutils",
"perl_build",
"cmake",
);
my $opt_buildsys;
my $opt_builddir;
my $opt_list;
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} && defined $opt_builddir) {
$bsopts{builddir} = ($opt_builddir eq "") ? undef : $opt_builddir;
}
return $module->new(%bsopts);
}
sub load_buildsystem {
my ($action, $system)=@_;
if (defined $system) {
my $inst = create_buildsystem_instance($system);
return $inst;
}
else {
# Try to determine build system automatically
for $system (@BUILDSYSTEMS) {
my $inst = create_buildsystem_instance($system, build_action=>$action);
if ($inst->is_buildable()) {
return $inst;
}
}
}
return;
}
sub buildsystems_init {
my %args=@_;
# TODO: Not documented in the manual pages yet.
# Initialize options from environment variables
if (exists $ENV{DH_AUTO_BUILDDIRECTORY}) {
$opt_builddir = $ENV{DH_AUTO_BUILDDIRECTORY};
}
if (exists $ENV{DH_AUTO_BUILDSYSTEM}) {
$opt_buildsys = $ENV{DH_AUTO_BUILDSYSTEM};
}
# Available command line options
my %options = (
"b:s" => \$opt_builddir,
"builddirectory:s" => \$opt_builddir,
"m=s" => \$opt_buildsys,
"buildsystem=s" => \$opt_buildsys,
"l" => \$opt_list,
"--list" => \$opt_list,
);
map { $args{options}{$_} = $options{$_} } keys(%options);
Debian::Debhelper::Dh_Lib::init(%args);
}
sub buildsystems_list {
my $action=shift;
# List buildsystems (including auto and specified status)
my ($auto, $specified);
for my $system (@BUILDSYSTEMS) {
my $inst = create_buildsystem_instance($system, build_action => undef);
my $is_specified = defined $opt_buildsys && $opt_buildsys eq $inst->NAME();
if (! defined $specified && defined $opt_buildsys && $opt_buildsys eq $inst->NAME()) {
$specified = $inst->NAME();
}
elsif (! defined $auto && $inst->check_auto_buildable($action)) {
$auto = $inst->NAME();
}
printf("%s - %s\n", $inst->NAME(), $inst->DESCRIPTION());
}
# List a specified 3rd party buildsystem too.
if (! defined $specified && defined $opt_buildsys) {
my $inst = create_buildsystem_instance($opt_buildsys, build_action => undef);
printf("%s - %s.\n", $inst->NAME(), $inst->DESCRIPTION());
$specified = $inst->NAME();
}
print "\n";
print "Auto-selected: $auto\n" if defined $auto;
print "Specified: $specified\n" if defined $specified;
print "No system auto-selected or specified\n"
if ! defined $auto && ! defined $specified;
}
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 build action: " . $action);
}
if ($opt_list) {
buildsystems_list($action);
exit 0;
}
my $buildsystem = load_buildsystem($action, $opt_buildsys);
if (defined $buildsystem) {
$buildsystem->pre_action($action);
$buildsystem->$action(@_, @{$dh{U_PARAMS}});
$buildsystem->post_action($action);
}
return 0;
}
1;
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