text: """
  This file started from
  https://github.com/mihaidusmanu/pycolmap/blob/master/setup.py
  BSD-3-Clause License 
  
  
  Copyright (c) 2020, Torsten Sattler
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without
  modification, are permitted 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 Torsten Sattler nor the
        names of its contributors may be used to endorse or promote products
        derived from this software without specific prior written permission.
  
  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 <COPYRIGHT HOLDER> 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 BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  ON ANY THEORY OF LIABILITY, WHETHER 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.
  
  author: Torsten Sattler, torsten.sattler.de@googlemail.com
  python bindings created by NAVER LABS Europe
  """
  import os
  import re
  import sys
  import platform
  import subprocess
  
  from setuptools import setup, Extension
  from setuptools.command.build_ext import build_ext
  from distutils.version import LooseVersion
  
  
  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":
              if os.environ.get('CMAKE_TOOLCHAIN_FILE') is not None:
                  cmake_toolchain_file = os.environ.get('CMAKE_TOOLCHAIN_FILE')
                  print(f'-DCMAKE_TOOLCHAIN_FILE={cmake_toolchain_file}')
                  cmake_args += [f'-DCMAKE_TOOLCHAIN_FILE={cmake_toolchain_file}']
              if os.environ.get('CMAKE_PREFIX_PATH') is not None:
                  cmake_prefix_path = os.environ.get('CMAKE_PREFIX_PATH')
                  print(f'-DCMAKE_PREFIX_PATH={cmake_prefix_path}')
                  cmake_args += [f'-DCMAKE_PREFIX_PATH={cmake_prefix_path}']
              cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
              if sys.maxsize > 2**32:
                  cmake_args += ['-DVCPKG_TARGET_TRIPLET=x64-windows']
                  cmake_args += ['-A', 'x64']
              build_args += ['--', '/m']
          else:
              cmake_args += ['-DCMAKE_BUILD_TYPE=' + cfg]
              if os.environ.get('CMAKE_PREFIX_PATH') is not None:
                  cmake_prefix_path = os.environ.get('CMAKE_PREFIX_PATH')
                  print(f'-DCMAKE_PREFIX_PATH={cmake_prefix_path}')
                  cmake_args += [f'-DCMAKE_PREFIX_PATH={cmake_prefix_path}']
              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)
          print(['cmake', ext.sourcedir] + cmake_args)
          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='pyransaclib',
      version='0.0.1',
      author='Torsten Sattler (bindings by Naver LABS Europe)',
      author_email='torsten.sattler.de@googlemail.com',
      description='RansacLib bindings',
      long_description='',
      ext_modules=[CMakeExtension('ransaclib')],
      cmdclass=dict(build_ext=CMakeBuild),
      zip_safe=False,
  )