setup.py

import setuptools
import sys
from os import environ
from Cython.Build import cythonize
from setuptools.extension import Extension

eca = []
ela = []

if environ.get('OMP'):
    if sys.platform == 'win32':
        eca.append('/openmp')
        ela.append('/openmp')
    else:
        if sys.platform == 'darwin':
            eca.append('-Xpreprocessor')
            ela.append('-lomp')
        else:
            ela.append('-fopenmp')
        
        eca.append('-fopenmp')

ext = [Extension('patlas',
                 sources=['patlas.pyx'],
                 extra_compile_args=eca,
                 extra_link_args=ela)]

with open('README.md', 'r') as f:
    long_description = f.read()

setuptools.setup(
    name='patlas',
    version='0.0.7a1',
    author='Alex Forrence',
    author_email='alex.forrence@gmail.com',
    description='Simple texture atlas packer',
    long_description=long_description,
    long_description_content_type='text/markdown',
    url='https://github.com/aforren1/patlas',
    packages=setuptools.find_packages(),
    entry_points = {
        'console_scripts': [
            'patlas = _patlas.util:main'
        ]
    },
    classifiers=[
        'Programming Language :: Python :: 3',
        'License :: OSI Approved :: MIT License',
        'Operating System :: OS Independent',
    ],
    ext_modules=cythonize(ext,
                          compiler_directives={'language_level': 3},
                          annotate=True)
)