setup.py

# based on https://github.com/pybind/python_example/blob/master/setup.py

import sys

from setuptools import setup, Extension
from setuptools.command.build_ext import build_ext
import setuptools

__version__ = '1.0.0a'


class get_pybind_include(object):
    """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)


# As of Python 3.6, CCompiler has a `has_flag` method.
# cf http://bugs.python.org/issue26689
def has_flag(compiler, flagname):
    """Return a boolean indicating whether a flag name is supported on
    the specified compiler.
    """
    import tempfile
    with tempfile.NamedTemporaryFile('w', suffix='.cpp') 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++14 compiler flag"""
    if has_flag(compiler, '-std=c++14'):
        return '-std=c++14'
    else:
        raise RuntimeError('Unsupported compiler -- at least C++14 support '
                           'is needed!')


class BuildExt(build_ext):
    """A custom build extension for adding compiler-specific options."""
    c_opts = {
        'msvc': ['/EHsc'],
        'unix': ['-O3'],
    }

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

    def build_extensions(self):
        compiler_type = self.compiler.compiler_type
        opts = self.c_opts.get(compiler_type, [])
        if compiler_type == 'unix':
            opts.append(
                '-DVERSION_INFO="%s"' % self.distribution.get_version()
            )
            opts.append('-DNOCROSSCONSTRUCTORS=1')
            opts.append(cpp_flag(self.compiler))
            if has_flag(self.compiler, '-fvisibility=hidden'):
                opts.append('-fvisibility=hidden')
        elif compiler_type == 'msvc':
            opts.append(
                '/DVERSION_INFO=\\"%s\\"' % self.distribution.get_version()
            )
        for ext in self.extensions:
            ext.extra_compile_args = opts
        build_ext.build_extensions(self)


EXT_MODULES = [
    Extension(
        'pysdsl/bits',
        ['pysdsl/bits.cpp'],
        include_dirs=[
            # Path to pybind11 headers
            get_pybind_include(),
            get_pybind_include(user=True)
        ],
        language='c++',
        libraries=['sdsl'],
    ),
    Extension(
        (
            'pysdsl/pysdsl'
            if sys.version_info.major == 2
            else 'pysdsl/__init__'
        ),
        ['pysdsl/__init__.cpp'],
        include_dirs=[
            # Path to pybind11 headers
            get_pybind_include(),
            get_pybind_include(user=True),
            "pysdsl/",
        ],
        language='c++',
        libraries=['sdsl', 'divsufsort', 'divsufsort64'],
    ),
    Extension(
        'pysdsl/_memory_monitor',
        ['pysdsl/_memory_monitor.cpp'],
        include_dirs=[
            # Path to pybind11 headers
            get_pybind_include(),
            get_pybind_include(user=True)
        ],
        language='c++',
        libraries=['sdsl'],
    ),
]


setup(
    name='pysdsl',
    version=__version__,
    author='Konstantin Ignatov',
    author_email='kv@qrator.net',
    url='https://git.qrator.net/podshumok/pysdsl',
    description='Python bindings to Succinct Data Structure Library 2.0',
    ext_modules=EXT_MODULES,
    packages=['pysdsl'],
    install_requires=['pybind11>=2.2'],
    cmdclass={'build_ext': BuildExt},
    zip_safe=False,
    classifiers=(
        "Development Status :: 3 - Alpha",
        "Intended Audience :: Customer Service",
        "Intended Audience :: Education",
        "Intended Audience :: Science/Research",
        ("License :: OSI Approved :: "
         "GNU Lesser General Public License v3 or later (LGPLv3+)"),
        "Operating System :: OS Independent",
        "Programming Language :: C++",
        "Programming Language :: Python",
    )
)