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# A debhelper build system class for handling simple Makefile based projects.
#
# Copyright: © 2008 Joey Hess
# © 2008-2009 Modestas Vainius
# License: GPL-2+
package Debian::Debhelper::Buildsystem::makefile;
use strict;
use Debian::Debhelper::Dh_Lib qw(escape_shell clean_jobserver_makeflags);
use base 'Debian::Debhelper::Buildsystem';
sub exists_make_target {
my ($this, $target) = @_;
# Use make -n to check to see if the target would do
# anything. There's no good way to test if a target exists.
my @opts=("-s", "-n", "--no-print-directory");
my $buildpath = $this->get_buildpath();
unshift @opts, "-C", $buildpath if $buildpath ne ".";
open(SAVEDERR, ">&STDERR");
close STDERR;
open(MAKE, "-|", $this->{makecmd}, @opts, $target);
my $output=<MAKE>;
close MAKE;
open(STDERR, ">&SAVEDERR");
return defined $output && length $output;
}
sub do_make {
my $this=shift;
# Avoid possible warnings about unavailable jobserver,
# and force make to start a new jobserver.
clean_jobserver_makeflags();
# Note that this will override any -j settings in MAKEFLAGS.
unshift @_, "-j" . ($this->get_parallel() > 0 ? $this->get_parallel() : "");
$this->doit_in_builddir($this->{makecmd}, @_);
}
sub make_first_existing_target {
my $this=shift;
my $targets=shift;
foreach my $target (@$targets) {
if ($this->exists_make_target($target)) {
$this->do_make($target, @_);
return $target;
}
}
return undef;
}
sub DESCRIPTION {
"simple Makefile"
}
sub new {
my $class=shift;
my $this=$class->SUPER::new(@_);
$this->{makecmd} = (exists $ENV{MAKE}) ? $ENV{MAKE} : "make";
return $this;
}
sub check_auto_buildable {
my $this=shift;
my ($step) = @_;
# This is always called in the source directory, but generally
# Makefiles are created (or live) in the the build directory.
return (-e $this->get_buildpath("Makefile") ||
-e $this->get_buildpath("makefile") ||
-e $this->get_buildpath("GNUmakefile")) ? 1 : 0;
}
sub build {
my $this=shift;
$this->do_make(@_);
}
sub test {
my $this=shift;
$this->make_first_existing_target(['test', 'check'], @_);
}
sub install {
my $this=shift;
my $destdir=shift;
$this->make_first_existing_target(['install'], "DESTDIR=$destdir", @_);
}
sub clean {
my $this=shift;
if (!$this->rmdir_builddir()) {
$this->make_first_existing_target(['distclean', 'realclean', 'clean'], @_);
}
}
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