setup.py

import os
import re
import sys
# import sysconfig
import platform
import subprocess

from distutils.version import LooseVersion
from setuptools import setup, Extension, find_packages
from setuptools.command.build_ext import build_ext

from distutils.sysconfig import get_python_inc


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))

        # self.debug = True

        cmake_version = LooseVersion(
            re.search(r'version\s*([\d.]+)', out.decode()).group(1))
        if cmake_version < '3.1.0':
            raise RuntimeError("CMake >= 3.1.0 is required")

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

    def build_extension(self, ext):
        use_cholmod = os.environ.get( "USE_CHOLMOD", "1" )
        n_threads_str = os.environ.get( "N_THREADS", "1" )
        n_threads = int(n_threads_str)

        cholmod_str = "-DPOLYSOLVE_WITH_CHOLMOD=OFF" if use_cholmod == "0" else "-DPOLYSOLVE_WITH_CHOLMOD=ON"


        extdir = os.path.join(os.path.abspath(os.path.dirname(
            self.get_ext_fullpath(ext.name))), "polyfempy")

        python_include_directory = str(get_python_inc())

        cmake_args = ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=' + extdir,
                      '-DPYTHON_EXECUTABLE=' + sys.executable,
                      '-DPYTHON_INCLUDE_DIR=' + python_include_directory,
                      '-DPOLYSOLVE_WITH_PARDISO=OFF',
                      cholmod_str,
                      #   '-DPOLYFEM_THREADING=NONE',
                      '-DPOLYFEM_NO_UI=ON',
                      '-DPOLYSOLVE_WITH_AMGCL=OFF',
                      '-DPOLYSOLVE_WITH_MKL=OFF',
                      '-DPOLYSOLVE_WITH_SPECTRA=OFF']

        cfg = 'Debug' if self.debug else 'Release'
        build_args = ['--config', cfg]
        cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]

        if platform.system() == "Windows":
            cmake_args += [
                '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
            if os.environ.get('CMAKE_GENERATOR') != "NMake Makefiles":
                if sys.maxsize > 2**32:
                    cmake_args += ['-A', 'x64']
                # build_args += ['--', '/m']
        else:
            build_args += ['--', '-j{}'.format(n_threads)]

        env = os.environ.copy()
        # env['CXXFLAGS'] = '{} -DVERSION_INFO=\"{}\"'.format(
            # env.get('CXXFLAGS', ''), self.distribution.get_version())
        # print(env['CXXFLAGS'])

        if not os.path.exists(self.build_temp):
            os.makedirs(self.build_temp)
        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)

        print()  # Add an empty line for cleaner output


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


setup(
    name="polyfempy",
    version="0.7",
    author="Teseo Schneider",
    author_email="",
    description="Polyfem Python Bindings",
    long_description=long_description,
    long_description_content_type="text/markdown",
    url="https://polyfem.github.io/",
    ext_modules=[CMakeExtension('polyfempy')],
    cmdclass=dict(build_ext=CMakeBuild),
    packages=find_packages(),
    classifiers=[
        "Programming Language :: Python :: 3",
        "License :: OSI Approved :: MIT License"
    ],
    python_requires='>=3.6',
    install_requires=[
        'numpy',
        'argparse'],
    entry_points={
        'console_scripts': [
            'polyfem = polyfempy.command:polyfem'
        ]
    },
    test_suite="test"
)