setup.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-


import os
import re
import sys
import platform
import subprocess
import setuptools

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

"""The setup script."""

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))

        if platform.system() == "Windows":
            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 on Windows")

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

    def build_extension(self, ext):
        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 'Release'
        build_args = ['--config', cfg]

        if platform.system() == "Windows":
            cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
            if sys.maxsize > 2**32:
                cmake_args += ['-A', 'x64']
            build_args += ['--', '/m']
        else:
            cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]
            build_args += ['--', '-j2']

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



with open('README.rst') as readme_file:
    readme = readme_file.read()

with open('HISTORY.rst') as history_file:
    history = history_file.read()
    
from subprocess import CalledProcessError
    
kwargs = dict(
    name='kanapy',
    version='2.1.1',
    author='Mahesh R.G Prasad',
    author_email='mahesh.prasad@rub.de',
    classifiers=[        
        'License :: OSI Approved :: MIT License',
        'Natural Language :: English',
        'Programming Language :: Python :: 3.6',
    ],     
    description="A python package for generating complex synthetic polycrystalline microstructures.",
    #long_description=readme + '\n\n' + history,
    packages=find_packages('src'),
    package_dir={'':'src'},
    license="MIT license",    
    url='https://github.com/mrgprasad/kanapy',
    #include_package_data=True,    
    ext_modules=[CMakeExtension('kanapy/base')],
    cmdclass=dict(build_ext=CMakeBuild),
    entry_points={'console_scripts': ['kanapy = kanapy.cli:start']},    
    zip_safe=False,
)

try:
    setup(**kwargs)        
except CalledProcessError:
    print('Failed to build extension!')
    del kwargs['ext_modules']
    setup(**kwargs)