# Interface to the Expat XML parser
        #
        # Expat was written by James Clark and is now maintained by a
        # group of developers on SourceForge; see www.libexpat.org for
        # more information.  The pyexpat module was written by Paul
        # Prescod after a prototype by Jack Jansen.  The Expat source
        # is included in Modules/expat/.  Usage of a system
        # shared libexpat.so/expat.dll is not advised.
        #
        # More information on Expat can be found at www.libexpat.org.
        #
        if sys.byteorder == "little":
            xmlbo = "1234"
        else:
            xmlbo = "4321"
        expatinc = os.path.join(os.getcwd(), srcdir, 'Modules', 'expat')
        define_macros = [
            ('XML_NS', '1'),
            ('XML_DTD', '1'),
            ('BYTEORDER', xmlbo),
            ('XML_CONTEXT_BYTES','1024'),
            ]