setup.py

#!/usr/bin/env python
import os

import setuptools
import sys
from setuptools import Extension, setup

from Cython.Distutils import build_ext

here = os.path.abspath(os.path.dirname(__file__))

# To update the package version number, edit ci_for_science/__version__.py
version = {}
with open(os.path.join(here, 'ci_for_science', '__version__.py')) as f:
    exec(f.read(), version)

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


def has_flag(compiler, flagname):
    """Return a boolean indicating whether a flag name is supported on the specified compiler.

    As of Python 3.6, CCompiler has a `has_flag` method.
    http: // bugs.python.org/issue26689
    """
    import tempfile
    with tempfile.NamedTemporaryFile('w', suffix='.cc') as f:
        f.write('int main (int argc, char **argv) { return 0; }')
        try:
            compiler.compile([f.name], extra_postargs=[flagname])
        except setuptools.distutils.errors.CompileError:
            return False
    return True


def cpp_flag(compiler):
    """Return the -std=c++[11/14] compiler flag.

    The newer version is prefered over c++11 (when it is available).
    """
    flags = ['-std=c++14', '-std=c++11']

    for flag in flags:
        if has_flag(compiler, flag):
            return flag

    raise RuntimeError('Unsupported compiler -- at least C++11 support '
                       'is needed!')


class get_pybind_include:
    """Helper class to determine the pybind11 include path.

    The purpose of this class is to postpone importing pybind11
    until it is actually installed, so that the ``get_include()``
    method can be invoked.
    """

    def __init__(self, user=False):
        self.user = user

    def __str__(self):
        import pybind11
        return pybind11.get_include(self.user)


class BuildExt(build_ext):
    """A custom build extension for adding compiler-specific options."""

    c_opts = {
        'msvc': ['/EHsc'],
        'unix': [],
    }
    l_opts = {
        'msvc': [],
        'unix': [],
    }

    if sys.platform == 'darwin':
        darwin_opts = ['-stdlib=libc++', '-mmacosx-version-min=10.7']
        c_opts['unix'] += darwin_opts
        l_opts['unix'] += darwin_opts

    def build_extensions(self):
        """Actual compilation."""
        ct = self.compiler.compiler_type
        opts = self.c_opts.get(ct, [])
        link_opts = self.l_opts.get(ct, [])
        if ct == 'unix':
            opts.append('-DVERSION_INFO="%s"' %
                        self.distribution.get_version())
            opts.append(cpp_flag(self.compiler))
            if has_flag(self.compiler, '-fvisibility=hidden'):
                opts.append('-fvisibility=hidden')
        elif ct == 'msvc':
            opts.append('/DVERSION_INFO=\\"%s\\"' %
                        self.distribution.get_version())
        for ext in self.extensions:
            ext.extra_compile_args = opts
            ext.extra_link_args = link_opts
        build_ext.build_extensions(self)


ext_pybind = Extension(
    'compute_pi_cpp',
    sources=['cpp/scientific_module.cpp'],
    include_dirs=[
        "cpp/include",
        # Path to pybind11 headers
        get_pybind_include(),
        get_pybind_include(user=True),
    ],
    language='c++')


setup(
    name='ci_for_science',
    version=version['__version__'],
    description="A introduction to Continuous integration and continuous development for scientific applications",
    long_description=readme + '\n\n',
    author="Felipe Zapata",
    author_email='f.zapata@esciencecenter.nl',
    url='https://github.com//ci_for_science',
    packages=[
        'ci_for_science',
    ],
    include_package_data=True,
    license="Apache Software License 2.0",
    zip_safe=False,
    keywords='ci_for_science',
    classifiers=[
        'Development Status :: 4 - Beta',
        'Intended Audience :: Developers',
        'License :: OSI Approved :: Apache Software License',
        'Natural Language :: English',
        'Programming Language :: Python :: 3',
        'Programming Language :: Python :: 3.6',
        'Programming Language :: Python :: 3.7',
    ],
    test_suite='tests',
    cmdclass={'build_ext': BuildExt},
    ext_modules=[ext_pybind],
    install_requires=["cython", "numpy", "pybind11>=2.2.4"],
    setup_requires=[
        # dependency for `python setup.py test`
        'pytest-runner',
        # dependencies for `python setup.py build_sphinx`
        'sphinx',
        'sphinx_rtd_theme',
        'recommonmark'
    ],
    tests_require=[
        'pytest',
        'pytest-cov',
        'pycodestyle',
    ],
    entry_points={
        'console_scripts': [
            'compute_pi=ci_for_science.ci_for_science:main',
        ]
    },
    extras_require={
        'test': ['coverage', 'pytest>=3.9', 'pytest-cov', 'pycodestyle', 'codacy-coverage'],
    }
)