setup.py

import os
import sys
from distutils.core import setup, Extension

ext_modules = []

if sys.version_info[0] == 3:
    # It is hard to write C extensions that support both Python 2 and 3,
    # so we opt here to support the acceleration only for Python 3.

    # This lets CI force us to exit with an error if compilation fails,
    # instead of falling back silently to the backup Python code.
    optional = True
    if os.environ.get('SGP4_FORCE_COMPILE') == 'true':
        optional = False

    ext_modules.append(Extension(
        'sgp4.vallado_cpp',
        optional=optional,
        sources=[
            'extension/SGP4.cpp',
            'extension/wrapper.cpp',
        ],

        # TODO: can we safely figure out how to use a pair of options
        # like these, adapted to as many platforms as possible, to use
        # multiple processors when available?
        # extra_compile_args=['-fopenmp'],
        # extra_link_args=['-fopenmp'],
        extra_compile_args=['-ffloat-store'],
    ))

# Read the package's docstring and "__version__" without importing it.
path = 'sgp4/__init__.py'
with open(path, 'rb') as f:
    text = f.read().decode('utf-8')
text = text.replace('-*- coding: utf-8 -*-', '')  # for Python 2.7

namespace = {}
eval(compile(text, path, 'exec'), namespace)

version = namespace['__version__']
description, long_description = namespace['__doc__'].split('\n', 1)

# Avoid "`long_description` has syntax errors in markup" from extra
# whitespace that somehow creeps in.
description = description.strip()
long_description = long_description.strip() + '\n'

setup(
    name = 'sgp4',
    version = version,
    description = description,
    long_description = long_description,
    long_description_content_type = 'text/x-rst',
    license = 'MIT',
    author = 'Brandon Rhodes',
    author_email = 'brandon@rhodesmill.org',
    url = 'https://github.com/brandon-rhodes/python-sgp4',
    classifiers = [
        'Development Status :: 5 - Production/Stable',
        'Intended Audience :: Science/Research',
        'License :: OSI Approved :: MIT License',
        'Programming Language :: Python :: 2',
        'Programming Language :: Python :: 2.7',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.8',
        'Programming Language :: Python :: 3.9',
        'Programming Language :: Python :: 3.10',
        'Programming Language :: Python :: 3.11',
        'Programming Language :: Python :: 3.12',
        'Topic :: Scientific/Engineering :: Astronomy',
    ],
    packages = ['sgp4'],
    package_data = {'sgp4': ['SGP4-VER.TLE', 'sample*', 'tcppver.out']},
    provides = ['sgp4'],
    ext_modules = ext_modules,
)