We really need you to answer this question: > Is _path.so a 32-bit or 64-bit library? From the missing symbol I'm > assuming 32-bit. And if it is compiled 32-bit, we need to know why. It is 32 bit. Probably because the Python it's compiled against is 32 bit? I don't understand why the build process is not pulling in libstdc++ if _path.so needs it. Fred