text: import os
  import re
  import sys
  import platform
  import subprocess
  
  from setuptools import setup, Extension, find_packages
  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))
  
          cmake_version = LooseVersion(re.search(r'version\s*([\d.]+)', out.decode()).group(1))
          if cmake_version < LooseVersion('3.12.0'):
              raise RuntimeError("CMake >= 3.12.0 is required")
  
          cmake_help = ''
          try:
              cmake_help = subprocess.check_output(['cmake', '--help'])
          except OSError:
              raise RuntimeError("Cmake could not be queried for its default generator")
  
          # Check if visual studio is the default cmake generator
          if '* Visual Studio' in cmake_help.decode():
            self.cmake_vs_default_generator = True
          else:
            self.cmake_vs_default_generator = False
  
          try:
              out = subprocess.check_output(['nvcc', '--version'])
          except OSError:
             print('CUDA was not found on the system, to build with CUDA, verify nvcc can be found in the PATH')
          
          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]
  
          force_cuda = os.environ.get("FORCE_CUDA", "")
          force_no_cuda = os.environ.get("FORCE_NO_CUDA", "")
          cmake_cpp_compiler = os.environ.get("CMAKE_CXX_COMPILER", "")
          cmake_cuda_compiler = os.environ.get("CMAKE_CUDA_COMPILER", "")
          cmake_generator = os.environ.get("CMAKE_GENERATOR", "")     
          cmake_toolset = os.environ.get("CMAKE_GENERATOR_TOOLSET", "")        
  
          build_type = os.environ.get("BUILD_TYPE", "Release")
          build_args = ['--config', build_type]
  
          # Pile all .so in one place and use $ORIGIN as RPATH
          cmake_args += ["-DCMAKE_BUILD_WITH_INSTALL_RPATH=TRUE"]
          cmake_args += ["-DCMAKE_INSTALL_RPATH={}".format("$ORIGIN")]
          cmake_args += ["-DBUILD_PYTHON_MODULE=TRUE"]
  
          if force_cuda:
            cmake_args += ["-DFORCE_CUDA={}".format(force_cuda)]
  
          if force_no_cuda:
            cmake_args += ["-DFORCE_NO_CUDA={}".format(force_no_cuda)]
  
          if cmake_cpp_compiler:
            cmake_args += ["-DCMAKE_CXX_COMPILER={}".format(cmake_cpp_compiler)]
  
          if cmake_cuda_compiler:
            cmake_args += ["-DCMAKE_CUDA_COMPILER={}".format(cmake_cuda_compiler)]      
  
          if cmake_generator:
            cmake_args += ["-DCMAKE_GENERATOR={}".format(cmake_generator)]
  
          if cmake_toolset:
            cmake_args += ["-DCMAKE_GENERATOR_TOOLSET={}".format(cmake_toolset)]
            
  
  
          if platform.system() == "Windows":
              generator_is_vs = False
              # If the user specified a visual studio generator OR the default generator is visual studio
              # then we need to specify the correct options for the visual studio generator
              if 'Visual Studio' in cmake_generator:
                generator_is_vs = True
              elif not cmake_generator and self.cmake_vs_default_generator:
                generator_is_vs = True
  
              if generator_is_vs:
                cmake_args += ['-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_{}={}'.format(build_type.upper(), extdir)]
                build_args += ['--', '/m']
              else:
                cmake_args += ['-DCMAKE_BUILD_TYPE=' + build_type]
                build_args += ['--', '-j4']
            
              if sys.maxsize > 2**32 and generator_is_vs:
                  cmake_args += ['-A', 'x64']
  
          else:
              cmake_args += ['-DCMAKE_BUILD_TYPE=' + build_type]
              build_args += ['--', '-j4']
  
          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', '.',
                                 '--target', ext.name
                                 ] + build_args,
                                cwd=self.build_temp)
  
  setup(
      name='pyscamp',
      use_scm_version = {
          "root": ".",
          "relative_to": __file__,
          "local_scheme": "no-local-version"
      },
      setup_requires=['setuptools_scm'],
      author='Zachary Zimmerman',
      author_email='zpzimmerman@gmail.com',
      description='SCAlable Matrix Profile',
      long_description=open("README.md").read(),
      long_description_content_type='text/markdown',
      ext_modules=[CMakeExtension('pyscamp')],
      packages=find_packages(),
      cmdclass=dict(build_ext=CMakeBuild),
      url="https://github.com/zpzim/SCAMP",
      zip_safe=False
  )
  