1 # A module for loading and managing debhelper build system classes.
2 # This module is intended to be used by all dh_auto_* programs.
4 # Copyright: © 2009 Modestas Vainius
7 package Debian::Debhelper::Dh_Buildsystems;
11 use Debian::Debhelper::Dh_Lib;
15 our @EXPORT=qw(&buildsystems_init &buildsystems_do &load_buildsystem &load_all_buildsystems);
17 # Historical order must be kept for backwards compatibility. New
18 # build systems MUST be added to the END of the list.
33 sub create_buildsystem_instance {
36 my $module = "Debian::Debhelper::Buildsystem::$system";
40 error("unable to load build system class '$system': $@");
43 if (!exists $bsopts{builddir} && defined $opt_builddir) {
44 $bsopts{builddir} = ($opt_builddir eq "") ? undef : $opt_builddir;
46 if (!exists $bsopts{sourcedir} && defined $opt_sourcedir) {
47 $bsopts{sourcedir} = ($opt_sourcedir eq "") ? undef : $opt_sourcedir;
49 return $module->new(%bsopts);
52 # Similar to create_build system_instance(), but it attempts to autoselect
53 # a build system if none was specified. In case autoselection fails, undef
55 sub load_buildsystem {
58 if (defined $system) {
59 my $inst = create_buildsystem_instance($system, @_);
63 # Try to determine build system automatically
64 for $system (@BUILDSYSTEMS) {
65 my $inst = create_buildsystem_instance($system, @_);
66 if ($inst->check_auto_buildable($step)) {
74 sub load_all_buildsystems {
75 my $incs=shift || \@INC;
76 my (%buildsystems, @buildsystems);
78 for my $inc (@$incs) {
79 my $path = File::Spec->catdir($inc, "Debian/Debhelper/Buildsystem");
81 for my $module_path (glob "$path/*.pm") {
82 my $name = basename($module_path);
84 next if exists $buildsystems{$name};
85 $buildsystems{$name} = create_buildsystem_instance($name, @_);
90 # Standard debhelper build systems first
91 for my $name (@BUILDSYSTEMS) {
92 error("standard debhelper build system '$name' could not be found/loaded")
93 if not exists $buildsystems{$name};
94 push @buildsystems, $buildsystems{$name};
95 delete $buildsystems{$name};
98 # The rest are 3rd party build systems
99 for my $name (keys %buildsystems) {
100 my $inst = $buildsystems{$name};
101 $inst->{thirdparty} = 1;
102 push @buildsystems, $inst;
105 return @buildsystems;
108 sub buildsystems_init {
111 # Available command line options
113 "D=s" => \$opt_sourcedir,
114 "sourcedirectory=s" => \$opt_sourcedir,
116 "B:s" => \$opt_builddir,
117 "builddirectory:s" => \$opt_builddir,
119 "S=s" => \$opt_buildsys,
120 "buildsystem=s" => \$opt_buildsys,
123 "list" => \$opt_list,
125 $args{options}{$_} = $options{$_} foreach keys(%options);
126 Debian::Debhelper::Dh_Lib::init(%args);
129 sub buildsystems_list {
132 # List build systems (including auto and specified status)
133 my ($auto, $specified);
134 for my $inst (load_all_buildsystems()) {
135 my $is_specified = defined $opt_buildsys && $opt_buildsys eq $inst->NAME();
136 if (! defined $specified && defined $opt_buildsys && $opt_buildsys eq $inst->NAME()) {
137 $specified = $inst->NAME();
139 elsif (! defined $auto && ! $inst->{thirdparty} && $inst->check_auto_buildable($step)) {
140 $auto = $inst->NAME();
142 printf("%-20s %s", $inst->NAME(), $inst->DESCRIPTION());
143 print " [3rd party]" if $inst->{thirdparty};
147 print "Auto-selected: $auto\n" if defined $auto;
148 print "Specified: $specified\n" if defined $specified;
149 print "No system auto-selected or specified\n"
150 if ! defined $auto && ! defined $specified;
153 sub buildsystems_do {
156 if (!defined $step) {
157 $step = basename($0);
158 $step =~ s/^dh_auto_//;
161 if (grep(/^\Q$step\E$/, qw{configure build test install clean}) == 0) {
162 error("unrecognized build step: " . $step);
166 buildsystems_list($step);
170 my $buildsystem = load_buildsystem($opt_buildsys, $step);
171 if (defined $buildsystem) {
172 $buildsystem->pre_building_step($step);
173 $buildsystem->$step(@_, @{$dh{U_PARAMS}});
174 $buildsystem->post_building_step($step);