setup.py

#!/usr/bin/python3 

import os
import sys
from setuptools import setup, find_packages, Extension
try:
    from Cython.Build import cythonize
except ImportError:
    cythonize = None


if 'sdist' in sys.argv and "CYTHONIZE" not in os.environ:
    raise Exception("Please use supplied makefile to build the package.")

# https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html#distributing-cython-modules
def no_cythonize(extensions, **_ignore):
    for extension in extensions:
        sources = []
        for sfile in extension.sources:
            path, ext = os.path.splitext(sfile)
            if ext in (".pyx", ".py"):
                if extension.language == "c++":
                    ext = ".cpp"
                else:
                    ext = ".c"
                sfile = path + ext
            sources.append(sfile)
        extension.sources[:] = sources
    return extensions


extensions = [
    Extension("wrapper", ["fatfs/wrapper.pyx", "fatfs/diskiocheck.c", "foreign/fatfs/source/ff.c", "foreign/fatfs/source/ffsystem.c", "foreign/fatfs/source/ffunicode.c"], include_dirs=["foreign/fatfs/source"]),
]

cythonize_env = bool(int(os.getenv("CYTHONIZE", 0)))

if cythonize_env and cythonize_env is None:
    raise Exception("Cython needs to be installed for CYTHONIZE=1")

CYTHONIZE = cythonize_env and cythonize is not None

if CYTHONIZE:
    compiler_directives = {"language_level": 3, "embedsignature": True}
    extensions = cythonize(extensions, compiler_directives=compiler_directives)
else:
    extensions = no_cythonize(extensions)

with open("README.md", "r") as fh:
    long_description = fh.read()

setup(
    name='fatfs',
    version="0.1.2",
    author="Ladislav Laska",
    author_email="krakonos@krakonos.org",
    description="A wrapper around ChaN's FatFS library for FAT filesystem manipulation.",
    long_description=long_description,
    long_description_content_type="text/markdown",
    ext_package='fatfs',
    ext_modules=extensions,
    url="https://github.com/krakonos/fatfs-python",
    #packages=['pyfatfs', 'pyfatfs.tests'],
    packages=find_packages(),
    setup_requires=['cython'],
    zip_safe=False,
    python_requires='>=3.8',
    classifiers=[
        "Development Status :: 2 - Pre-Alpha",
        "Intended Audience :: Developers",
        "Programming Language :: Python :: 3",
        "License :: OSI Approved :: MIT License",
        "Operating System :: OS Independent",
        "Topic :: Scientific/Engineering",
        "Topic :: Software Development :: Embedded Systems",
        "Topic :: Software Development :: Libraries",
        "Topic :: System :: Filesystems",
    ],
)