setup.py

import setuptools
from setuptools.extension import Extension
from distutils.command.build_ext import build_ext as DistUtilsBuildExt


class BuildExtension(setuptools.Command):
	description     = DistUtilsBuildExt.description
	user_options    = DistUtilsBuildExt.user_options
	boolean_options = DistUtilsBuildExt.boolean_options
	help_options    = DistUtilsBuildExt.help_options

	def __init__(self, *args, **kwargs):
		from setuptools.command.build_ext import build_ext as SetupToolsBuildExt

		# Bypass __setatrr__ to avoid infinite recursion.
		self.__dict__['_command'] = SetupToolsBuildExt(*args, **kwargs)

	def __getattr__(self, name):
		return getattr(self._command, name)

	def __setattr__(self, name, value):
		setattr(self._command, name, value)

	def initialize_options(self, *args, **kwargs):
		return self._command.initialize_options(*args, **kwargs)

	def finalize_options(self, *args, **kwargs):
		ret = self._command.finalize_options(*args, **kwargs)
		import numpy
		self.include_dirs.append(numpy.get_include())
		return ret

	def run(self, *args, **kwargs):
		return self._command.run(*args, **kwargs)


extensions = [
	Extension(
		'tf_retinanet.utils.compute_overlap',
		['tf_retinanet/utils/compute_overlap.pyx']
	),
]

setuptools.setup(
	name='tf-retinanet',

	version='1',

	description='',
	long_description='',

	author='',
	author_email='',

	license='',
	cmdclass = {'build_ext': BuildExtension},
	packages=setuptools.find_packages(),
	ext_modules = extensions,
	setup_requires = ["cython>=0.28", "numpy>=1.14.0"],
	zip_safe=False,
)