in reply to Re: How to let my XS module interact with existing XS module?
in thread How to let my XS module interact with existing XS module?

It seems an typemap can be shared only if its author made it using ExtUtils::Typemap as a module

Never heard of that. Its a file, if its installed, and you can find it, you can include it

https://metacpan.org/module/ExtUtils::MakeMaker#TYPEMAPS 

Pango-1.221\blib\arch\Pango\Install\Files.pm
Pango-1.221\blib\arch\Pango\Install\pango-perl-autogen.h
Pango-1.221\blib\arch\Pango\Install\pango-perl-versions.h
Pango-1.221\blib\arch\Pango\Install\pango-perl.h
Pango-1.221\blib\arch\Pango\Install\pango-perl.typemap
Pango-1.221\blib\arch\Pango\Install\pango.typemap

[download]

Gtk2::Install::Files 

package Gtk2::Install::Files;

$self = {
          'inc' => '-mms-bitfields -IC:/gtk_bundle/include/gtk-2.0 -IC
+:/gtk_bundle/lib/gtk-2.0/include -IC:/gtk_bundle/include/atk-1.0 -IC:
+/gtk_bundle/include/cairo -IC:/gtk_bundle/include/pango-1.0 -IC:/gtk_
+bundle/include/glib-2.0 -IC:/gtk_bundle/lib/glib-2.0/include -IC:/gtk
+_bundle/include/freetype2 -IC:/gtk_bundle/include -IC:/gtk_bundle/inc
+lude/libpng12   -I./build ',
          'typemaps' => [
                          'gtk2perl.typemap',
                          'gdk.typemap',
                          'gtk.typemap'
                        ],
          'deps' => [
                      'Pango',
                      'Glib',
                      'Cairo'
                    ],
          'libs' => '-LC:/gtk_bundle/lib -lgtk-win32-2.0 -lgdk-win32-2
+.0 -latk-1.0 -lgio-2.0 -lgdk_pixbuf-2.0 -lpangowin32-1.0 -lgdi32 -lpa
+ngocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -lglib-2
+.0 -lintl  '
        };


# this is for backwards compatiblity
@deps = @{ $self->{deps} };
@typemaps = @{ $self->{typemaps} };
$libs = $self->{libs};
$inc = $self->{inc};

    $CORE = undef;
    foreach (@INC) {
        if ( -f $_ . "/Gtk2/Install/Files.pm") {
            $CORE = $_ . "/Gtk2/Install/";
            last;
        }
    }

1;

[download]

Seems Gtk2::Install::Files is generated by ExtUtils::Depends, so just use ExtUtils::Depends in Makefile.PL and ... less work for you :)

In Section Seekers of Perl Wisdom