I am sorry to come up with a question that probably has been asked and answered many times but I honestly searched for an answer but failed to find one.
I want to create Python modules from some Fortran numerical functions that rely on LAPACK. I start with a function SB02MD.f that provides a solver for algebraic Riccati equation (ARE) that can be obtained at http://www.slicot.de/. I proceeded the standard f2py way: f2py SB02MD.f -m are -h are1.pyf modified are1.pyf (saved as are.pyf) to tell which arguments are inputs and outputs and compiled the module: f2py -c are.pyf SB02MD.f --link-lapack_opt However, when trying to import the module, Python cries that there is and undefined symbol: sb02mw_. The same situation if I omit --link-lapack_opt. The famous underscore problem. Perhaps important information is that I am on Linux and experience this problem both with lapack-atlas and lapack-reference libraries. Why I am so focused on Lapack? Some other examples for f2py that do not need Lapack work well here. Even though Google gives miriad of links for "f2py underscore" problem, I failed to find the one that is relevant for me. I played with the options like -DUNDERSCORE_G77 and -DNO_APPEND_FORTRAN but no help and I actually do not understand their use at all (not explained in man for f2py). Thanks for whatever hint/advice. -- ------------------------------------------------ Zdenek Hurak Czech Technical University in Prague ------------------------------------------------ _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
