setup.py

#
# Copyright (C) 2019 ifm electronic, gmbh
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import os
import re
import sys
import platform
import subprocess

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

#
# This setup script was borrowed and modified from the pybind11 sample
# project found here: https://github.com/pybind/cmake_example
#

def get_version_from_cmakelists():
    """
    Helper to parse the ifm3d package version out of the CMakeLists file
    """
    path_to_cmakelists = os.path.abspath('CMakeLists.txt')
    if not os.path.isfile(path_to_cmakelists):
        raise RuntimeError('CMakeLists.txt not found, ' +
                           'unable to parse project version!')

    with open(path_to_cmakelists, "r") as f:
        lines = f.readlines()
    for line in lines:
        if "project(IFM3D VERSION" in line:
            for token in line.split(" "):
                if re.match(r'^[0-9]+\.[0-9]+\.[0-9]+$', token):
                    return token

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)))

        # Build with cmake -- build only camera and framegrabber. Also build
        # them as static libs so the resulting python module is isolated.
        cmake_args = ['-DBUILD_MODULE_IMAGE=OFF',
                      '-DBUILD_MODULE_SWUPDATER=OFF',
                      '-DBUILD_MODULE_TOOLS=OFF',
                      '-DBUILD_MODULE_PYBIND11=ON',
                      '-DBUILD_TESTS=OFF',
                      '-DBUILD_SHARED_LIBS=OFF',
                      '-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 'IFM3D_BUILD_DIR' in os.environ:
                cmake_args += ['-DCMAKE_PREFIX_PATH=' + os.environ['IFM3D_BUILD_DIR'] + '\\install']

            # If a generator was specified, use it. Otherwise use the machine's
            # architecture and the default generator.
            if 'IFM3D_CMAKE_GENERATOR' in os.environ:
                cmake_args += ['-G', os.environ['IFM3D_CMAKE_GENERATOR'].replace('"','')]
            elif 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)

setup(
    name='ifm3dpy',
    version=get_version_from_cmakelists(),
    author='Sean Kelly',
    author_email='Sean.Kelly@ifm.com',
    description='Library for working with ifm pmd-based 3D ToF Cameras',
    url='https://github.com/ifm/ifm3d',
    license='Apache 2.0',
    long_description='',
    ext_modules=[CMakeExtension('IFM3D_PYBIND11')],
    cmdclass=dict(build_ext=CMakeBuild),
    zip_safe=False,
)