setup.py

from distutils.core import setup, Extension
import os

xdelta_dir = os.path.join(os.environ['HOME'], 'xdelta-src')
xdelta3_c_src = os.path.join(xdelta_dir, 'xdelta3.c')

setup(name='xdelta3',
      version='0.1',
      description='Python interface for xdelta',
      author='Romulo Ceccon',
      author_email='romuloceccon@gmail.com',
      py_modules=['xdelta3'],
      package_dir={'': 'lib'},
      ext_modules=[Extension('_xdelta3',
                             ['src/python_xdelta3.c', xdelta3_c_src],
                             include_dirs=[xdelta_dir],
                             define_macros=[('HAVE_CONFIG_H', None),
                                            ('XD3_MAIN', '0'),
                                            ('XD3_POSIX', '1'),
                                            ('EXTERNAL_COMPRESSION', '0'),
                                            ('XD3_USE_LARGEFILE64', '1')])],
      )