setup.py

'''
The copyright in this software is being made available under the Clear BSD
License, included below. No patent rights, trademark rights and/or 
other Intellectual Property Rights other than the copyrights concerning 
the Software are granted under this license.

The Clear BSD License

Copyright (c) 2019-2023, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The NNCodec Authors.
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted (subject to the limitations in the disclaimer below) provided that
the following conditions are met:

     * Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

     * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.

     * Neither the name of the copyright holder nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.

NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY
THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
'''
import sys

MIN_PYTHON = (3, 6)

if sys.version_info < MIN_PYTHON:
    sys.exit( "Python {}.{} or later is required.".format( *MIN_PYTHON ) )

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

__version__ = '0.3.1'


class get_pybind_include(object):
    def __init__(self, user=False):
        self.user = user

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


sources = glob( "extensions/deepCABAC/source/*.cpp*" ) + \
          glob( "extensions/deepCABAC/source/Lib/CommonLib/*.cpp*" ) + \
          glob( "extensions/deepCABAC/source/Lib/EncLib/*.cpp*" ) + \
          glob( "extensions/deepCABAC/source/Lib/DecLib/*.cpp*" )

ext_modules = [
    Extension(
        'deepCABAC',
        sources=sources,
        include_dirs=[
            # Path to pybind11 headers
            get_pybind_include(),
            get_pybind_include(user=True),
            "extensions/deepCABAC/source",
            "extensions/deepCABAC/source/Lib",
            "extensions/deepCABAC/source/Lib/CommonLib"
            "extensions/deepCABAC/source/Lib/EncLib"
            "extensions/deepCABAC/source/Lib/DecLib"
        ],
        language='c++'
    ),
]

# cf http://bugs.python.org/issue26689
def has_flag(compiler, flagname):
    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):
    flags = ['-std=c++17', '-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 BuildExt(build_ext):
    c_opts = {
        'msvc': ['/EHsc'],
        'unix': [],
    }
    l_opts = {
        'msvc': [],
        'unix': [],
    }

    if sys.platform == 'darwin':
        darwin_opts = ['-stdlib=libc++', '-mmacosx-version-min=10.14']
        c_opts['unix'] += darwin_opts
        l_opts['unix'] += darwin_opts

    def build_extensions(self):
        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)

setup(
    name='NNC',
    version=__version__,
    packages=find_packages(),
    author='Paul Haase, Daniel Becking',
    author_email='paul.haase@hhi.fraunhofer.de, daniel.becking@hhi.fraunhofer.de',
    url='https://hhi.fraunhofer.de',
    description='Neural Network Codec. deepCABAC C++ binding using pybind11.',
    long_description='',
    ext_modules=ext_modules,
    install_requires=['pybind11>=2.3'],
    setup_requires=['pybind11>=2.3'],
    cmdclass={'build_ext': BuildExt},
    zip_safe=False,
    package_data={"": ["*.txt"]},
    include_package_data=True,
)