setup.py

import os, sys, subprocess

from setuptools import setup, Extension, find_packages
from setuptools.command.build_ext import build_ext

class CMakeExtension(Extension):
    def __init__(self, name, sourcedir=""):
        Extension.__init__(self, name, sources=[])
        self.sourcedir = os.path.abspath(sourcedir)


class CMakeBuild(build_ext):
    def build_extension(self, ext):
        extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
        
        cmake_args = [
            "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY={}".format(extdir),
            "-DPYTHON_EXECUTABLE={}".format(sys.executable),
            "-DEXAMPLE_VERSION_INFO={}".format(self.distribution.get_version()),
        ]
        if self.debug:
            cmake_args.append('-DDEBUG=ON')

        build_args = [
            "-j8"
        ]

        if not os.path.exists(self.build_temp):
            os.makedirs(self.build_temp)

        subprocess.check_call(
            ["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp
        )
        subprocess.check_call(
            ["cmake", "--build", "."] + build_args, cwd=self.build_temp
        )


setup(
    name='ptxnn',
    version='0.0.1',
    packages=find_packages(),
    install_requires=[
        'numpy >= 1.19.0',
    ],
    author='ptaxom',
    python_requires='>=3.6', 
    ext_modules=[CMakeExtension("_ptxnn")],
    cmdclass={"build_ext": CMakeBuild},
)