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I have a C extension in which I'd like to use OpenMP. When I import my module, though, I get an import error: ImportError: /home/.../_entropysplit.so: undefined symbol: GOMP_parallel_end I've compiled the module with -fopenmp and -lgomp. Is this because my Python installation wasn't compiled with the -fopenmp flag? Will I have to build Python from source? Or is there some other possibility? This is the only time I actually use openmp in my module: unsigned int feature_index; #pragma omp parallel for for (feature_index = 0; feature_index < num_features; feature_index++) { I'd like to stick with openmp if it's possible, just because it's so easy and the parallelization in this case suits it well. EDIT: I bit the bullet and recompiled Python with OpenMP support. My module works perfectly now, but this isn't really a great solution. I can't really distribute this if it requires a complete recompile of Python. So does anybody know some way around this? Would ctypes work, maybe? SOLVED! It was a simple linking issue. (I rebuilt Python for that?!) OpenMP wasn't being properly linked during the compilation of the module. So it IS possible to load a C Python extension that uses OpenMP.

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