text: import os
  import sys
  import platform
  import subprocess
  import re
  import setuptools
  
  from setuptools import setup, Extension
  from setuptools.command.build_ext import build_ext
  from distutils.version import LooseVersion
  
  
  def read(fname):
      return open(os.path.join(os.path.dirname(__file__), fname)).read()
  
  
  def find_version():
      version_file = read("tenseal/version.py")
      version_re = r"__version__ = '(?P<version>.+)'"
      version = re.match(version_re, version_file).group('version')
      return version
  
  
  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":
              cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(cfg.upper(), extdir)]
              if 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)
  
  
  
  setuptools.setup(
      name="tenseal",
      version=find_version(),
      author="Ayoub Benaissa",
      author_email="ayouben9@gmail.com",
      description="A Library for Homomorphic Encryption Operations on Tensors",
      license="Apache-2.0",
      keywords="homomorphic encryption tensor deep learning privacy secure",
      long_description=read("README.md"),
      long_description_content_type="text/markdown",
      url="https://github.com/OpenMined/TenSEAL",
      packages=setuptools.find_packages(include=['tenseal', 'tenseal.*']),
      classifiers=[
          "Programming Language :: C++",
          "Programming Language :: Python :: 3",
          "Operating System :: OS Independent",
          "Topic :: Security :: Cryptography",
      ],
      ext_modules=[CMakeExtension('_tenseal_cpp')],
      cmdclass=dict(build_ext=CMakeBuild),
      zip_safe=False,
  )
  