Wrap C++ lib with Cython

Question

I\'m new to Cython and I\'m trying to use Cython to wrap a C/C++ static library. I made a simple example as follow.

Test.h:

#ifndef          


        

Answer 1

Your Test.pyx file isn't doing what you expect. The print add(2,3) line will not call the add() C++ function; you have to explicitly create a wrapper function to do that. Cython doesn't create wrappers for you automatically.

Something like this is probably what you want:

cdef extern from "test.h":
        int _add "add"(int a,int b)
        int _multiply "multiply"(int a,int b)

def add(a, b):
    return _add(a, b)

def multiply(a, b):
    return _multiply(a, b)

print add(2, 3)

You can look at Cython's documentation for more details.