setup.py

import os
import sys
import 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 run(self):
        try:
            out = subprocess.check_output(["cmake", "--version"])
        except OSError:
            raise RuntimeError(
                "CMake must be installed to build the following extensions: "
                + ", ".join(e.name for e in self.extensions)
            )

        for ext in self.extensions:
            self.build_extension(ext)

    def build_extension(self, ext):
        env = os.environ.copy()
        env["CXXFLAGS"] = '{} -DVERSION_INFO=\\"{}\\"'.format(
            env.get("CXXFLAGS", ""), self.distribution.get_version()
        )
        extdir = os.path.abspath(os.path.dirname(self.get_ext_fullpath(ext.name)))
        cmake_args = [
            "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=" + extdir,
            "-DPYTHON_EXECUTABLE=" + sys.executable,
        ]

        cfg = "Debug" if self.debug else "RelWithDebInfo"
        build_args = ["--config", cfg]

        cmake_args += ["-DCMAKE_BUILD_TYPE=" + cfg]
        if "TF_BUILD" not in env:
            build_args += ["--", "-j8"]

        if not os.path.exists(self.build_temp):
            os.makedirs(self.build_temp)
        if "CMAKE_VERBOSE_MAKEFILE" in env or "TF_BUILD" in env:
            cmake_args += ["-DCMAKE_VERBOSE_MAKEFILE=1"]
        subprocess.check_call(
            ["cmake", ext.sourcedir] + cmake_args, cwd=self.build_temp, env=env
        )
        subprocess.check_call(
            ["cmake", "--build", "."] + build_args, cwd=self.build_temp
        )


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


setup(
    name="batoid",
    use_scm_version=True,
    setup_requires=["setuptools_scm"],
    author="Josh Meyers",
    author_email="jmeyers314@gmail.com",
    url="https://github.com/jmeyers314/batoid",
    description="Optics raytracer",
    long_description=long_description,
    long_description_content_type="text/markdown",
    packages=find_packages(exclude=["batoid/data", "batoid/data/*"]),
    package_dir={"batoid": "batoid"},
    package_data={"batoid": ["data/**/*"]},
    ext_modules=[CMakeExtension("batoid._batoid")],
    install_requires=[
        "pybind11",
        "numpy",
        "pyyaml",
        "scipy",
        "galsim",
        "matplotlib",
        "astropy",
    ],
    python_requires=">=3.9",
    cmdclass=dict(build_ext=CMakeBuild),
    zip_safe=False,
    include_package_data=True,
    classifiers=[
        "Development Status :: 3 - Alpha",
        "Intended Audience :: Science/Research",
        "License :: OSI Approved :: BSD License",
        "Programming Language :: C++",
        "Programming Language :: Python :: 3",
        "Topic :: Scientific/Engineering :: Astronomy",
        "Topic :: Scientific/Engineering :: Physics",
    ],
    project_urls={
        "Documentation": "https://jmeyers314.github.io/batoid/overview.html",
        "Source": "https://github.com/jmeyers314/batoid",
        "Tracker": "https://github.com/jmeyers314/batoid/issues",
    },
)