1 # A module for loading and managing debhelper buildsystem plugins.
2 # This module is intended to be used by all dh_auto_* helper commands.
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 # buildsystems 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 buildsystem 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_buildsystem_instance(), but it attempts to autoselect
53 # a buildsystem 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 # Push debhelper built-in buildsystems first
91 for my $name (@BUILDSYSTEMS) {
92 error("Debhelper built-in buildsystem '$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 buildsystems
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 # TODO: Not documented in the manual pages yet.
112 # Initialize options from environment variables
113 if (exists $ENV{DH_AUTO_BUILDDIRECTORY}) {
114 $opt_builddir = $ENV{DH_AUTO_BUILDDIRECTORY};
116 if (exists $ENV{DH_AUTO_BUILDSYSTEM}) {
117 $opt_buildsys = $ENV{DH_AUTO_BUILDSYSTEM};
120 # Available command line options
122 "d=s" => \$opt_sourcedir,
123 "sourcedirectory=s" => \$opt_sourcedir,
125 "b:s" => \$opt_builddir,
126 "builddirectory:s" => \$opt_builddir,
128 "m=s" => \$opt_buildsys,
129 "buildsystem=s" => \$opt_buildsys,
132 "--list" => \$opt_list,
134 $args{options}{$_} = $options{$_} foreach keys(%options);
135 Debian::Debhelper::Dh_Lib::init(%args);
138 sub buildsystems_list {
141 # List buildsystems (including auto and specified status)
142 my ($auto, $specified);
143 my @buildsystems = load_all_buildsystems();
144 for my $inst (@buildsystems) {
145 my $is_specified = defined $opt_buildsys && $opt_buildsys eq $inst->NAME();
146 if (! defined $specified && defined $opt_buildsys && $opt_buildsys eq $inst->NAME()) {
147 $specified = $inst->NAME();
149 elsif (! defined $auto && ! $inst->{thirdparty} && $inst->check_auto_buildable($step)) {
150 $auto = $inst->NAME();
152 printf("%s - %s", $inst->NAME(), $inst->DESCRIPTION());
153 print " [3rd party]" if $inst->{thirdparty};
157 print "Auto-selected: $auto\n" if defined $auto;
158 print "Specified: $specified\n" if defined $specified;
159 print "No system auto-selected or specified\n"
160 if ! defined $auto && ! defined $specified;
163 sub buildsystems_do {
166 if (!defined $step) {
167 $step = basename($0);
168 $step =~ s/^dh_auto_//;
171 if (grep(/^\Q$step\E$/, qw{configure build test install clean}) == 0) {
172 error("unrecognized build step: " . $step);
176 buildsystems_list($step);
180 my $buildsystem = load_buildsystem($opt_buildsys, $step);
181 if (defined $buildsystem) {
182 $buildsystem->pre_building_step($step);
183 $buildsystem->$step(@_, @{$dh{U_PARAMS}});
184 $buildsystem->post_building_step($step);