How to get Cython to switch a compiler?

Question

So basically, I want Cython to use GCC/G++, but it says that I must download Visual Studio 14.0, which is useless, making it a bloatware.

Last time I asked (at GitHub), people suggested me to download Visual Studio 2015. And if you want to download it, you must be subscribed. And that did not help me. So how do I force Cython to use GCC/G++?

setup.py:

from setuptools import setup
from Cython.Build import cythonize

setup(
    name='Hello world app',
    ext_modules=cythonize("hello.pyx"),
    zip_safe=False,
)