text: import os
  import re
  import sys
  import platform
  import subprocess
  
  from setuptools import setup, Extension
  from setuptools.command.build_ext import build_ext
  from setuptools.command.sdist import sdist as orig_sdist
  from distutils.version import LooseVersion
  
  BASEDIR = os.path.split(os.path.abspath(__file__))[0]
  
  class Pyosmium_sdist(orig_sdist):
  
      contrib = (
          ('libosmium', 'https://github.com/osmcode/libosmium/archive/v{}.tar.gz'),
          ('protozero', 'https://github.com/mapbox/protozero/archive/v{}.tar.gz'),
          ('pybind11', 'https://github.com/pybind/pybind11/archive/v{}.tar.gz'),
      )
  
      def make_release_tree(self, base_dir, files):
          orig_sdist.make_release_tree(self, base_dir, files)
  
          # add additional dependecies in the required version
          for name, tar_src in self.contrib:
              tarball = tar_src.format(versions[name + '_version'])
              print("Downloading and adding {} sources from {}".format(name, tarball))
              subprocess.call('wget -O - -q {} | tar xz -C {} --one-top-level=contrib/{} --strip-components=1'.format(
                     tarball, base_dir, name), shell=True)
  
  
  def get_versions():
      """ Read the version file.
  
          The file cannot be directly imported because it is not installed
          yet.
      """
      version_py = os.path.join(BASEDIR, "src/osmium/version.py")
      v = {}
      with open(version_py) as version_file:
          # Execute the code in version.py.
          exec(compile(version_file.read(), version_py, 'exec'), v)
  
      return v
  
  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 'LIBOSMIUM_PREFIX' in env:
              cmake_args += ['-DOSMIUM_INCLUDE_DIR={}/include'.format(env['LIBOSMIUM_PREFIX'])]
          elif os.path.exists(os.path.join(BASEDIR, 'contrib', 'libosmium', 'include', 'osmium', 'version.hpp')):
              cmake_args += ['-DOSMIUM_INCLUDE_DIR={}/contrib/libosmium/include'.format(BASEDIR)]
  
          if 'PROTOZERO_PREFIX' in env:
              cmake_args += ['-DPROTOZERO_INCLUDE_DIR={}/include'.format(env['PROTOZERO_PREFIX'])]
          elif os.path.exists(os.path.join(BASEDIR, 'contrib', 'protozero', 'include', 'protozero', 'version.hpp')):
              cmake_args += ['-DPROTOZERO_INCLUDE_DIR={}/contrib/protozero/include'.format(BASEDIR)]
  
          if 'PYBIND11_PREFIX' in env:
              cmake_args += ['-DPYBIND11_PREFIX={}'.format(env['PYBIND11_PREFIX'])]
          elif os.path.exists(os.path.join(BASEDIR, 'contrib', 'pybind11')):
              cmake_args += ['-DPYBIND11_PREFIX={}/contrib/pybind11'.format(BASEDIR)]
  
          if 'BOOST_PREFIX' in env:
              cmake_args += ['-DBOOST_ROOT={}'.format(env['BOOST_PREFIX'])]
  
          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)
  
  versions = get_versions()
  
  with open('README.rst', 'r') as descfile:
      long_description = descfile.read()
  
  setup(
      name='osmium',
      version=versions['pyosmium_release'],
      description='Python bindings for libosmium, the data processing library for OSM data',
      long_description=long_description,
      author='Sarah Hoffmann',
      author_email='lonvia@denofr.de',
      maintainer='Sarah Hoffmann',
      maintainer_email='lonvia@denofr.de',
      download_url='https://github.com/osmcode/pyosmium',
      url='http://osmcode.org/pyosmium',
      keywords=["OSM", "OpenStreetMap", "Osmium"],
      license='BSD',
      scripts=['tools/pyosmium-get-changes', 'tools/pyosmium-up-to-date'],
      classifiers = [
          "Development Status :: 4 - Beta",
          "Intended Audience :: Developers",
          "License :: OSI Approved :: BSD License",
          "Programming Language :: Python :: 2.7",
          "Programming Language :: Python :: 3.3",
          "Programming Language :: Python :: 3.4",
          "Programming Language :: Python :: 3.5",
          "Programming Language :: Python :: 3.6",
          "Programming Language :: Python :: 3.7",
          "Programming Language :: Python :: Implementation :: CPython",
          "Programming Language :: C++",
          ],
  
      ext_modules=[CMakeExtension('cmake_example')],
      packages = ['osmium', 'osmium/osm', 'osmium/replication'],
      package_dir = {'' : 'src'},
      cmdclass=dict(build_ext=CMakeBuild, sdist=Pyosmium_sdist),
      zip_safe=False,
  )
  