build_ext.build_extensions(self)
mod = Extension('_wripaca', sources=['../wripaca_wrap.c',
    '../../src/wripaca.c'], include_dirs=['../../include'])
setup(name='wripaca', ext_modules=[mod], py_modules=['wripaca'], cmdclass={
    'build_ext': build_ext_subclass})
Python distutils, how to get a compiler that is going to be used?