Hi, For the wafo [1] package we are trying to include the extension compilation process in setup.py [2] by using setuptools and numpy.distutils [3]. Some of the extensions have one Fortran interface source file, but it depends on several other Fortran sources (modules). The manual compilation process would go as follows: gfortran -fPIC -c source_01.f gfortran -fPIC -c source_02.f f2py -m module_name -c source_01.o source_02.o source_interface.f Can this workflow be incorporated into setuptools/numpy.distutils? Something along the lines as: from numpy.distutils.core import setup, Extension ext = Extension('module.name', depends=['source_01.f', 'source_02.f'], sources=['source_interface.f']) (note that the above does not work) [1] https://github.com/wafo-project/pywafo [2] https://github.com/wafo-project/pywafo/blob/pipinstall/setup.py [3] http://docs.scipy.org/doc/numpy/reference/distutils.html Regards, David