Hi, I have recently integrated my work on numpy.distutils to build so called "installable" C libraries, that is pure C libraries which can be installed and reused by 3rd parties. The general documentation is in the distutils section: http://docs.scipy.org/doc/numpy/reference/distutils.html#building-installabl... Example to reuse the math library is given in the core math library section in the C api chapter: http://docs.scipy.org/doc/numpy/reference/c-api.coremath.html#linking-agains... cheers, David