/usr/share/perl5/Debian/Debhelper/Dh_Buildsystems.pm is in debhelper 9.20120115ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | # A module for loading and managing debhelper build system classes.
# This module is intended to be used by all dh_auto_* programs.
#
# Copyright: © 2009 Modestas Vainius
# License: GPL-2+
package Debian::Debhelper::Dh_Buildsystems;
use strict;
use warnings;
use Debian::Debhelper::Dh_Lib;
use File::Spec;
use base 'Exporter';
our @EXPORT=qw(&buildsystems_init &buildsystems_do &load_buildsystem &load_all_buildsystems);
use constant BUILD_STEPS => qw(configure build test install clean);
# Historical order must be kept for backwards compatibility. New
# build systems MUST be added to the END of the list.
our @BUILDSYSTEMS = (
"autoconf",
(! compat(7) ? "perl_build" : ()),
"perl_makemaker",
"makefile",
"python_distutils",
(compat(7) ? "perl_build" : ()),
"cmake",
"ant",
"qmake",
"qmake_qt4",
);
my $opt_buildsys;
my $opt_sourcedir;
my $opt_builddir;
my $opt_list;
my $opt_parallel;
sub create_buildsystem_instance {
my $system=shift;
my %bsopts=@_;
my $module = "Debian::Debhelper::Buildsystem::$system";
eval "use $module";
if ($@) {
error("unable to load build system class '$system': $@");
}
if (!exists $bsopts{builddir} && defined $opt_builddir) {
$bsopts{builddir} = ($opt_builddir eq "") ? undef : $opt_builddir;
}
if (!exists $bsopts{sourcedir} && defined $opt_sourcedir) {
$bsopts{sourcedir} = ($opt_sourcedir eq "") ? undef : $opt_sourcedir;
}
if (!exists $bsopts{parallel}) {
$bsopts{parallel} = $opt_parallel;
}
return $module->new(%bsopts);
}
# Autoselect a build system from the list of instances
sub autoselect_buildsystem {
my $step=shift;
my $selected;
my $selected_level = 0;
foreach my $inst (@_) {
# Only derived (i.e. more specific) build system can be
# considered beyond the currently selected one.
next if defined $selected && !$inst->isa(ref $selected);
# If the build system says it is auto-buildable at the current
# step and it can provide more specific information about its
# status than its parent (if any), auto-select it.
my $level = $inst->check_auto_buildable($step);
if ($level > $selected_level) {
$selected = $inst;
$selected_level = $level;
}
}
return $selected;
}
# Similar to create_build system_instance(), but it attempts to autoselect
# a build system if none was specified. In case autoselection fails, undef
# is returned.
sub load_buildsystem {
my $system=shift;
my $step=shift;
if (defined $system) {
my $inst = create_buildsystem_instance($system, @_);
return $inst;
}
else {
# Try to determine build system automatically
my @buildsystems;
foreach $system (@BUILDSYSTEMS) {
push @buildsystems, create_buildsystem_instance($system, @_);
}
return autoselect_buildsystem($step, @buildsystems);
}
}
sub load_all_buildsystems {
my $incs=shift || \@INC;
my (%buildsystems, @buildsystems);
foreach my $inc (@$incs) {
my $path = File::Spec->catdir($inc, "Debian/Debhelper/Buildsystem");
if (-d $path) {
foreach my $module_path (glob "$path/*.pm") {
my $name = basename($module_path);
$name =~ s/\.pm$//;
next if exists $buildsystems{$name};
$buildsystems{$name} = create_buildsystem_instance($name, @_);
}
}
}
# Standard debhelper build systems first
foreach my $name (@BUILDSYSTEMS) {
error("standard debhelper build system '$name' could not be found/loaded")
if not exists $buildsystems{$name};
push @buildsystems, $buildsystems{$name};
delete $buildsystems{$name};
}
# The rest are 3rd party build systems
foreach my $name (keys %buildsystems) {
my $inst = $buildsystems{$name};
$inst->{thirdparty} = 1;
push @buildsystems, $inst;
}
return @buildsystems;
}
sub buildsystems_init {
my %args=@_;
my $max_parallel=1;
# Available command line options
my %options = (
"D=s" => \$opt_sourcedir,
"sourcedirectory=s" => \$opt_sourcedir,
"B:s" => \$opt_builddir,
"builddirectory:s" => \$opt_builddir,
"S=s" => \$opt_buildsys,
"buildsystem=s" => \$opt_buildsys,
"l" => \$opt_list,
"list" => \$opt_list,
"parallel" => sub { $max_parallel = -1 },
"max-parallel=i" => \$max_parallel,
);
$args{options}{$_} = $options{$_} foreach keys(%options);
Debian::Debhelper::Dh_Lib::init(%args);
Debian::Debhelper::Dh_Lib::set_buildflags();
set_parallel($max_parallel);
}
sub set_parallel {
my $max=shift;
# Get number of processes from parallel=n option, limiting it
# with $max if needed
$opt_parallel=get_buildoption("parallel") || 1;
if ($max > 0 && $opt_parallel > $max) {
$opt_parallel = $max;
}
}
sub buildsystems_list {
my $step=shift;
my @buildsystems = load_all_buildsystems();
my $auto = autoselect_buildsystem($step, grep { ! $_->{thirdparty} } @buildsystems);
my $specified;
# List build systems (including auto and specified status)
foreach my $inst (@buildsystems) {
if (! defined $specified && defined $opt_buildsys && $opt_buildsys eq $inst->NAME()) {
$specified = $inst;
}
printf("%-20s %s", $inst->NAME(), $inst->DESCRIPTION());
print " [3rd party]" if $inst->{thirdparty};
print "\n";
}
print "\n";
print "Auto-selected: ", $auto->NAME(), "\n" if defined $auto;
print "Specified: ", $specified->NAME(), "\n" if defined $specified;
print "No system auto-selected or specified\n"
if ! defined $auto && ! defined $specified;
}
sub buildsystems_do {
my $step=shift;
if (!defined $step) {
$step = basename($0);
$step =~ s/^dh_auto_//;
}
if (grep(/^\Q$step\E$/, BUILD_STEPS) == 0) {
error("unrecognized build step: " . $step);
}
if ($opt_list) {
buildsystems_list($step);
exit 0;
}
my $buildsystem = load_buildsystem($opt_buildsys, $step);
if (defined $buildsystem) {
$buildsystem->pre_building_step($step);
$buildsystem->$step(@_, @{$dh{U_PARAMS}});
$buildsystem->post_building_step($step);
}
return 0;
}
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