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	# Defaults inserted by DistZilla:
	  'build_requires' => {
    'Module::Build' => '0.3601',
    'Test::More' => '0',
    'Test::Requires' => '0'
  },
  'configure_requires' => {
    'Archive::Tar' => '0',
    'ExtUtils::CChecker' => '0',
    'File::Path' => '2.08',
    'File::ShareDir' => '0',
    'IPC::Cmd' => '0',
    'Module::Build' => '0.3601',
    'Net::FTP' => '0',
    'perl' => '5.010_001',
    'version' => '0'
  },
  'requires' => {
    'perl' => 'v5.10.0'
  },
	  'dist_abstract' => 'Build and install the GNU build system.',
  'dist_name' => 'Alien-Autotools',
  'license' => 'lgpl',
	  'dist_author' => [
    'Richard Simões <rsimoes AT cpan DOT org>'
  ],
	dist_version_from => "lib/Alien/Autotools.pm",
	share_dir => "share" );

my $base_dir = $builder->base_dir;
my $share_dir = catdir($base_dir, "share");

# Automake needs a possibly newer autoconf than what the system has, so add the
# new bin dir to $ENV{PATH}.
$ENV{PATH} = catdir($share_dir, "bin") . ":$ENV{PATH}";

my %autotools = map {
	my ($tool, $bin_path, $ftp_path) = @{$_}{qw(tool bin_path ftp_path)};
	my ($version) = $bin_path
		? do {
			my ($output) = ( run(
				command => [$bin_path, "--version"] ) )[2][0] =~ /([\d.]+)/ }
		: "0.0.0";
	# Convert to semantic version
	$version ||= "0.0.0";
	$version =~ s/^(?<!.)(\d\.\d+)$/$1.0/m;
	if ( !$ENV{COMPILE_ALIEN_AUTOTOOLS}
		 && version->new($version) >= $_->{min_version} ) {
		say "Version $version of $tool found; skipping compilation...";
		# Skipping installation and passing directory of path found by &can_run:
		$tool => join "", ( splitpath($bin_path) )[0, 1] }
	else {
		say "Downloading $tool source archive from ftp.gnu.org...";
		my $ftp = Net::FTP->new("ftp.gnu.org")
			or die "Unable to connect to FTP server";
		$ftp->login or die "Unable to anonymously login to FTP server";
		$ftp->binary;
		$ftp->get($ftp_path) or die "Failed to download $ftp_path";
		$ftp->quit;

		my ($archive) = glob("*.tar.gz");
		Archive::Tar->new($archive)->extract;
		unlink $archive;

		my ($tool_dir) = glob "$tool-*";
		chdir $tool_dir;
		run( command => ["./configure", "--prefix=$share_dir"] )
			or die "Failed to configure $tool";
		print "Compiling $tool...\n";
		run( command => [qw(make -j9)]) or die "Failed to make $tool";
		print "Installing...\n";
		run( command => [qw(make install)] )
			or die "Failed to install $tool";
		chdir $base_dir;
		remove_tree($tool_dir);

		# Passing sharedir path of new installation:
		$tool, catdir($share_dir, "bin") } }
	{ tool => "autoconf",
	  min_version => version->new("2.68.0"),
	  bin_path => can_run("autoconf"),
	  ftp_path => "/gnu/autoconf/autoconf-2.68.tar.gz" },
	{ tool => "automake",
	  min_version => version->new("1.11.0"),
	  bin_path => can_run("automake"),
	  ftp_path => "/gnu/automake/automake-1.11.3.tar.gz" },
	{ tool => "libtool",
	  min_version => version->new("2.4.0"),
	  bin_path => can_run("libtool"),
	  ftp_path => "/gnu/libtool/libtool-2.4.2.tar.gz" };

# Update Perl module:
do {
	open my $LIB, "<", catdir qw(lib Alien Autotools.pm);
	local $/;
	my $lib = <$LIB>;
	close $LIB;
	$lib =~ s/##/$autotools{autoconf}/;
	$lib =~ s/##/$autotools{automake}/;
	$lib =~ s/##/$autotools{libtool}/;
	open $LIB, ">", "lib/Alien/Autotools.pm";
	print $LIB $lib };

# Update manifest:
my @share_files = map { glob catdir qw(share $_ *) } qw(bin share);
@share_files > 0 and do {
	open my $MANIFEST, ">>", "MANIFEST";
	print $MANIFEST map {
		catfile($builder->dist_dir, $_) . "\n" } @share_files };

$builder->create_build_script;