+sub write {
+ my $self = shift;
+ die "&Makefile->write() takes no arguments\n" if @_;
+
+ # Check the current Perl version
+ my $perl_version = $self->perl_version;
+ if ( $perl_version ) {
+ eval "use $perl_version; 1"
+ or die "ERROR: perl: Version $] is installed, "
+ . "but we need version >= $perl_version";
+ }
+
+ # Make sure we have a new enough MakeMaker
+ require ExtUtils::MakeMaker;
+
+ if ( $perl_version and $self->_cmp($perl_version, '5.006') >= 0 ) {
+ # MakeMaker can complain about module versions that include
+ # an underscore, even though its own version may contain one!
+ # Hence the funny regexp to get rid of it. See RT #35800
+ # for details.
+ my $v = $ExtUtils::MakeMaker::VERSION =~ /^(\d+\.\d+)/;
+ $self->build_requires( 'ExtUtils::MakeMaker' => $v );
+ $self->configure_requires( 'ExtUtils::MakeMaker' => $v );
+ } else {
+ # Allow legacy-compatibility with 5.005 by depending on the
+ # most recent EU:MM that supported 5.005.
+ $self->build_requires( 'ExtUtils::MakeMaker' => 6.42 );
+ $self->configure_requires( 'ExtUtils::MakeMaker' => 6.42 );
+ }
+
+ # Generate the MakeMaker params
+ my $args = $self->makemaker_args;
+ $args->{DISTNAME} = $self->name;
+ $args->{NAME} = $self->module_name || $self->name;
+ $args->{NAME} =~ s/-/::/g;
+ $args->{VERSION} = $self->version or die <<'EOT';
+ERROR: Can't determine distribution version. Please specify it
+explicitly via 'version' in Makefile.PL, or set a valid $VERSION
+in a module, and provide its file path via 'version_from' (or
+'all_from' if you prefer) in Makefile.PL.
+EOT
+
+ $DB::single = 1;
+ if ( $self->tests ) {
+ my @tests = split ' ', $self->tests;
+ my %seen;
+ $args->{test} = {
+ TESTS => (join ' ', grep {!$seen{$_}++} @tests),
+ };
+ } elsif ( $Module::Install::ExtraTests::use_extratests ) {
+ # Module::Install::ExtraTests doesn't set $self->tests and does its own tests via harness.
+ # So, just ignore our xt tests here.
+ } elsif ( -d 'xt' and ($Module::Install::AUTHOR or $ENV{RELEASE_TESTING}) ) {
+ $args->{test} = {
+ TESTS => join( ' ', map { "$_/*.t" } grep { -d $_ } qw{ t xt } ),
+ };
+ }
+ if ( $] >= 5.005 ) {
+ $args->{ABSTRACT} = $self->abstract;
+ $args->{AUTHOR} = join ', ', @{$self->author || []};
+ }
+ if ( $self->makemaker(6.10) ) {
+ $args->{NO_META} = 1;
+ #$args->{NO_MYMETA} = 1;
+ }
+ if ( $self->makemaker(6.17) and $self->sign ) {
+ $args->{SIGN} = 1;
+ }
+ unless ( $self->is_admin ) {
+ delete $args->{SIGN};
+ }
+ if ( $self->makemaker(6.31) and $self->license ) {
+ $args->{LICENSE} = $self->license;
+ }
+
+ my $prereq = ($args->{PREREQ_PM} ||= {});
+ %$prereq = ( %$prereq,
+ map { @$_ } # flatten [module => version]
+ map { @$_ }
+ grep $_,
+ ($self->requires)
+ );
+
+ # Remove any reference to perl, PREREQ_PM doesn't support it
+ delete $args->{PREREQ_PM}->{perl};
+
+ # Merge both kinds of requires into BUILD_REQUIRES
+ my $build_prereq = ($args->{BUILD_REQUIRES} ||= {});
+ %$build_prereq = ( %$build_prereq,
+ map { @$_ } # flatten [module => version]
+ map { @$_ }
+ grep $_,
+ ($self->configure_requires, $self->build_requires)
+ );
+
+ # Remove any reference to perl, BUILD_REQUIRES doesn't support it
+ delete $args->{BUILD_REQUIRES}->{perl};
+
+ # Delete bundled dists from prereq_pm, add it to Makefile DIR
+ my $subdirs = ($args->{DIR} || []);
+ if ($self->bundles) {
+ my %processed;
+ foreach my $bundle (@{ $self->bundles }) {
+ my ($mod_name, $dist_dir) = @$bundle;
+ delete $prereq->{$mod_name};
+ $dist_dir = File::Basename::basename($dist_dir); # dir for building this module
+ if (not exists $processed{$dist_dir}) {
+ if (-d $dist_dir) {
+ # List as sub-directory to be processed by make
+ push @$subdirs, $dist_dir;
+ }
+ # Else do nothing: the module is already present on the system
+ $processed{$dist_dir} = undef;
+ }
+ }
+ }
+
+ unless ( $self->makemaker('6.55_03') ) {
+ %$prereq = (%$prereq,%$build_prereq);
+ delete $args->{BUILD_REQUIRES};
+ }
+
+ if ( my $perl_version = $self->perl_version ) {
+ eval "use $perl_version; 1"
+ or die "ERROR: perl: Version $] is installed, "
+ . "but we need version >= $perl_version";
+
+ if ( $self->makemaker(6.48) ) {
+ $args->{MIN_PERL_VERSION} = $perl_version;
+ }
+ }
+
+ if ($self->installdirs) {
+ warn qq{old INSTALLDIRS (probably set by makemaker_args) is overriden by installdirs\n} if $args->{INSTALLDIRS};
+ $args->{INSTALLDIRS} = $self->installdirs;
+ }
+
+ my %args = map {
+ ( $_ => $args->{$_} ) } grep {defined($args->{$_} )
+ } keys %$args;
+
+ my $user_preop = delete $args{dist}->{PREOP};
+ if ( my $preop = $self->admin->preop($user_preop) ) {
+ foreach my $key ( keys %$preop ) {
+ $args{dist}->{$key} = $preop->{$key};
+ }
+ }
+
+ my $mm = ExtUtils::MakeMaker::WriteMakefile(%args);
+ $self->fix_up_makefile($mm->{FIRST_MAKEFILE} || 'Makefile');
+}