ImportError: dynamic module does not define init function (initfizzbuzz)

The error also occurs, when using boost::python, if the module name is different to the compiled .so file name. For example:

hello.cpp

#include <boost/python/module.hpp>
#include <boost/python/def.hpp>
using namespace std;
using namespace boost::python;

int helloWorld(){
    cout << "Hello world!" << endl;
    return 0;
}

BOOST_PYTHON_MODULE(libhello) {
    def("hello_world", helloWorld);
}

compilation command:

g++ -fpic -shared -o libfoo.so -Wl,-soname,"libfoo.so" hello.cpp -I<path/to/python> -L/usr/local/lib  -lboost_python-py34

When including in python with import libfoo the following error occurs:

ImportError: dynamic module does not define init function (PyInit_libfoo)

This is because of “libhello” and “libfoo” do not match.