text: #
  # Kivy - Cross-platform UI framework
  # https://kivy.org/
  #
  from __future__ import print_function
  
  import sys
  build_examples = False
  if "--build_examples" in sys.argv:
      build_examples = True
      sys.argv.remove("--build_examples")
  
  from copy import deepcopy
  import os
  from os.path import join, dirname, sep, exists, basename, isdir
  from os import walk, environ
  from distutils.version import LooseVersion
  from distutils.sysconfig import get_python_inc
  from collections import OrderedDict
  from time import sleep
  from subprocess import check_output, CalledProcessError
  from datetime import datetime
  
  if environ.get('KIVY_USE_SETUPTOOLS'):
      from setuptools import setup, Extension
      print('Using setuptools')
  else:
      from distutils.core import setup
      from distutils.extension import Extension
      print('Using distutils')
  
  
  PY3 = sys.version > '3'
  
  if PY3:  # fix error with py3's LooseVersion comparisons
      def ver_equal(self, other):
          return self.version == other
  
      LooseVersion.__eq__ = ver_equal
  
  
  def get_description():
      with open(join(dirname(__file__), 'README.md')) as fileh:
          return fileh.read()
  
  
  def get_version(filename='kivy/version.py'):
      VERSION = kivy.__version__
      DATE = datetime.utcnow().strftime('%Y%m%d')
      try:
          GIT_REVISION = check_output(
              ['git', 'rev-parse', 'HEAD']
          ).strip().decode('ascii')
      except (CalledProcessError, OSError, IOError) as e:
          # CalledProcessError has no errno
          errno = getattr(e, 'errno', None)
          if errno != 2 and 'CalledProcessError' not in repr(e):
              raise
          GIT_REVISION = "Unknown"
  
      cnt = (
          "# THIS FILE IS GENERATED FROM KIVY SETUP.PY\n"
          "__version__ = '%(version)s'\n"
          "__hash__ = '%(hash)s'\n"
          "__date__ = '%(date)s'\n"
      )
  
      with open(filename, 'w') as f:
          f.write(cnt % {
              'version': VERSION,
              'hash': GIT_REVISION,
              'date': DATE
          })
      return VERSION
  
  
  MIN_CYTHON_STRING = '0.24'
  MIN_CYTHON_VERSION = LooseVersion(MIN_CYTHON_STRING)
  MAX_CYTHON_STRING = '0.28.5'
  MAX_CYTHON_VERSION = LooseVersion(MAX_CYTHON_STRING)
  CYTHON_UNSUPPORTED = (
      # ref https://github.com/cython/cython/issues/1968
      '0.27', '0.27.2'
  )
  
  
  def getoutput(cmd, env=None):
      import subprocess
      p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
                           stderr=subprocess.PIPE, env=env)
      p.wait()
      if p.returncode:  # if not returncode == 0
          print('WARNING: A problem occurred while running {0} (code {1})\n'
                .format(cmd, p.returncode))
          stderr_content = p.stderr.read()
          if stderr_content:
              print('{0}\n'.format(stderr_content))
          return ""
      return p.stdout.read()
  
  
  def pkgconfig(*packages, **kw):
      flag_map = {'-I': 'include_dirs', '-L': 'library_dirs', '-l': 'libraries'}
      lenviron = None
      pconfig = join(sys.prefix, 'libs', 'pkgconfig')
  
      if isdir(pconfig):
          lenviron = environ.copy()
          lenviron['PKG_CONFIG_PATH'] = '{};{}'.format(
              environ.get('PKG_CONFIG_PATH', ''), pconfig)
      cmd = 'pkg-config --libs --cflags {}'.format(' '.join(packages))
      results = getoutput(cmd, lenviron).split()
      for token in results:
          ext = token[:2].decode('utf-8')
          flag = flag_map.get(ext)
          if not flag:
              continue
          kw.setdefault(flag, []).append(token[2:].decode('utf-8'))
      return kw
  
  
  # -----------------------------------------------------------------------------
  # Determine on which platform we are
  
  platform = sys.platform
  
  # Detect 32/64bit for OSX (http://stackoverflow.com/a/1405971/798575)
  if sys.platform == 'darwin':
      if sys.maxsize > 2 ** 32:
          osx_arch = 'x86_64'
      else:
          osx_arch = 'i386'
  
  # Detect Python for android project (http://github.com/kivy/python-for-android)
  ndkplatform = environ.get('NDKPLATFORM')
  if ndkplatform is not None and environ.get('LIBLINK'):
      platform = 'android'
  kivy_ios_root = environ.get('KIVYIOSROOT', None)
  if kivy_ios_root is not None:
      platform = 'ios'
  if exists('/opt/vc/include/bcm_host.h'):
      platform = 'rpi'
  if exists('/usr/lib/arm-linux-gnueabihf/libMali.so'):
      platform = 'mali'
  
  # -----------------------------------------------------------------------------
  # Detect options
  #
  c_options = OrderedDict()
  c_options['use_rpi'] = platform == 'rpi'
  c_options['use_mali'] = platform == 'mali'
  c_options['use_egl'] = False
  c_options['use_opengl_es2'] = None
  c_options['use_opengl_mock'] = environ.get('READTHEDOCS', None) == 'True'
  c_options['use_sdl2'] = None
  c_options['use_pangoft2'] = None
  c_options['use_ios'] = False
  c_options['use_mesagl'] = False
  c_options['use_x11'] = False
  c_options['use_wayland'] = False
  c_options['use_gstreamer'] = None
  c_options['use_avfoundation'] = platform == 'darwin'
  c_options['use_osx_frameworks'] = platform == 'darwin'
  c_options['debug_gl'] = False
  
  # now check if environ is changing the default values
  for key in list(c_options.keys()):
      ukey = key.upper()
      if ukey in environ:
          value = bool(int(environ[ukey]))
          print('Environ change {0} -> {1}'.format(key, value))
          c_options[key] = value
  
  
  # -----------------------------------------------------------------------------
  # Cython check
  # on python-for-android and kivy-ios, cython usage is external
  
  cython_unsupported_append = '''
  
    Please note that the following versions of Cython are not supported
    at all: {}
  '''.format(', '.join(map(str, CYTHON_UNSUPPORTED)))
  
  cython_min = '''\
    This version of Cython is not compatible with Kivy. Please upgrade to
    at least version {0}, preferably the newest supported version {1}.
  
    If your platform provides a Cython package, make sure you have upgraded
    to the newest version. If the newest version available is still too low,
    please remove it and install the newest supported Cython via pip:
  
      pip install -I Cython=={1}{2}\
  '''.format(MIN_CYTHON_STRING, MAX_CYTHON_STRING,
             cython_unsupported_append if CYTHON_UNSUPPORTED else '')
  
  cython_max = '''\
    This version of Cython is untested with Kivy. While this version may
    work perfectly fine, it is possible that you may experience issues. If
    you do have issues, please downgrade to a supported version. It is
    best to use the newest supported version, {1}, but the minimum
    supported version is {0}.
  
    If your platform provides a Cython package, check if you can downgrade
    to a supported version. Otherwise, uninstall the platform package and
    install Cython via pip:
  
      pip install -I Cython=={1}{2}\
  '''.format(MIN_CYTHON_STRING, MAX_CYTHON_STRING,
             cython_unsupported_append if CYTHON_UNSUPPORTED else '')
  
  cython_unsupported = '''\
    This version of Cython suffers from known bugs and is unsupported.
    Please install the newest supported version, {1}, if possible, but
    the minimum supported version is {0}.
  
    If your platform provides a Cython package, check if you can install
    a supported version. Otherwise, uninstall the platform package and
    install Cython via pip:
  
      pip install -I Cython=={1}{2}\
  '''.format(MIN_CYTHON_STRING, MAX_CYTHON_STRING,
             cython_unsupported_append)
  
  have_cython = False
  skip_cython = False
  if platform in ('ios', 'android'):
      print('\nCython check avoided.')
      skip_cython = True
  else:
      try:
          # check for cython
          from Cython.Distutils import build_ext
          have_cython = True
          import Cython
          cy_version_str = Cython.__version__
          cy_ver = LooseVersion(cy_version_str)
          print('\nDetected Cython version {}'.format(cy_version_str))
          if cy_ver < MIN_CYTHON_VERSION:
              print(cython_min)
              raise ImportError('Incompatible Cython Version')
          if cy_ver in CYTHON_UNSUPPORTED:
              print(cython_unsupported)
              raise ImportError('Incompatible Cython Version')
          if cy_ver > MAX_CYTHON_VERSION:
              print(cython_max)
              sleep(1)
      except ImportError:
          print("\nCython is missing, it's required for compiling kivy !\n\n")
          raise
  
  if not have_cython:
      from distutils.command.build_ext import build_ext
  
  # -----------------------------------------------------------------------------
  # Setup classes
  
  # the build path where kivy is being compiled
  src_path = build_path = dirname(__file__)
  
  
  class KivyBuildExt(build_ext):
  
      def finalize_options(self):
          retval = build_ext.finalize_options(self)
          global build_path
          if (self.build_lib is not None and exists(self.build_lib) and
                  not self.inplace):
              build_path = self.build_lib
          return retval
  
      def build_extensions(self):
          # build files
          config_h_fn = ('include', 'config.h')
          config_pxi_fn = ('include', 'config.pxi')
          config_py_fn = ('setupconfig.py', )
  
          # generate headers
          config_h = '// Autogenerated file for Kivy C configuration\n'
          config_h += '#define __PY3 {0}\n'.format(int(PY3))
          config_pxi = '# Autogenerated file for Kivy Cython configuration\n'
          config_pxi += 'DEF PY3 = {0}\n'.format(int(PY3))
          config_py = '# Autogenerated file for Kivy configuration\n'
          config_py += 'PY3 = {0}\n'.format(int(PY3))
          config_py += 'CYTHON_MIN = {0}\nCYTHON_MAX = {1}\n'.format(
              repr(MIN_CYTHON_STRING), repr(MAX_CYTHON_STRING))
          config_py += 'CYTHON_BAD = {0}\n'.format(repr(', '.join(map(
              str, CYTHON_UNSUPPORTED))))
  
          # generate content
          print('Build configuration is:')
          for opt, value in c_options.items():
              value = int(bool(value))
              print(' * {0} = {1}'.format(opt, value))
              opt = opt.upper()
              config_h += '#define __{0} {1}\n'.format(opt, value)
              config_pxi += 'DEF {0} = {1}\n'.format(opt, value)
              config_py += '{0} = {1}\n'.format(opt, value)
          debug = bool(self.debug)
          print(' * debug = {0}'.format(debug))
  
          config_pxi += 'DEF DEBUG = {0}\n'.format(debug)
          config_py += 'DEBUG = {0}\n'.format(debug)
          config_pxi += 'DEF PLATFORM = "{0}"\n'.format(platform)
          config_py += 'PLATFORM = "{0}"\n'.format(platform)
          for fn, content in (
                  (config_h_fn, config_h), (config_pxi_fn, config_pxi),
                  (config_py_fn, config_py)):
              build_fn = expand(build_path, *fn)
              if self.update_if_changed(build_fn, content):
                  print('Updated {}'.format(build_fn))
              src_fn = expand(src_path, *fn)
              if src_fn != build_fn and self.update_if_changed(src_fn, content):
                  print('Updated {}'.format(src_fn))
  
          c = self.compiler.compiler_type
          print('Detected compiler is {}'.format(c))
          if c != 'msvc':
              for e in self.extensions:
                  e.extra_link_args += ['-lm']
  
          build_ext.build_extensions(self)
  
      def update_if_changed(self, fn, content):
          need_update = True
          if exists(fn):
              with open(fn) as fd:
                  need_update = fd.read() != content
          if need_update:
              with open(fn, 'w') as fd:
                  fd.write(content)
          return need_update
  
  
  def _check_and_fix_sdl2_mixer(f_path):
      print("Check if SDL2_mixer smpeg2 have an @executable_path")
      rpath_from = ("@executable_path/../Frameworks/SDL2.framework"
                    "/Versions/A/SDL2")
      rpath_to = "@rpath/../../../../SDL2.framework/Versions/A/SDL2"
      smpeg2_path = ("{}/Versions/A/Frameworks/smpeg2.framework"
                     "/Versions/A/smpeg2").format(f_path)
      output = getoutput(("otool -L '{}'").format(smpeg2_path)).decode('utf-8')
      if "@executable_path" not in output:
          return
  
      print("WARNING: Your SDL2_mixer version is invalid")
      print("WARNING: The smpeg2 framework embedded in SDL2_mixer contains a")
      print("WARNING: reference to @executable_path that will fail the")
      print("WARNING: execution of your application.")
      print("WARNING: We are going to change:")
      print("WARNING: from: {}".format(rpath_from))
      print("WARNING: to: {}".format(rpath_to))
      getoutput("install_name_tool -change {} {} {}".format(
          rpath_from, rpath_to, smpeg2_path))
  
      output = getoutput(("otool -L '{}'").format(smpeg2_path))
      if b"@executable_path" not in output:
          print("WARNING: Change successfully applied!")
          print("WARNING: You'll never see this message again.")
      else:
          print("WARNING: Unable to apply the changes, sorry.")
  
  
  # -----------------------------------------------------------------------------
  # extract version (simulate doc generation, kivy will be not imported)
  environ['KIVY_DOC_INCLUDE'] = '1'
  import kivy
  
  # extra build commands go in the cmdclass dict {'command-name': CommandClass}
  # see tools.packaging.{platform}.build.py for custom build commands for
  # portable packages. Also e.g. we use build_ext command from cython if its
  # installed for c extensions.
  from kivy.tools.packaging.factory import FactoryBuild
  cmdclass = {
      'build_factory': FactoryBuild,
      'build_ext': KivyBuildExt}
  
  try:
      # add build rules for portable packages to cmdclass
      if platform == 'win32':
          from kivy.tools.packaging.win32.build import WindowsPortableBuild
          cmdclass['build_portable'] = WindowsPortableBuild
      elif platform == 'darwin':
          from kivy.tools.packaging.osx.build import OSXPortableBuild
          cmdclass['build_portable'] = OSXPortableBuild
  except ImportError:
      print('User distribution detected, avoid portable command.')
  
  # Detect which opengl version headers to use
  if platform in ('android', 'darwin', 'ios', 'rpi', 'mali'):
      c_options['use_opengl_es2'] = True
  elif c_options['use_opengl_es2'] is None:
      c_options['use_opengl_es2'] = \
          environ.get('KIVY_GRAPHICS', '').lower() == 'gles'
  
  print('Using this graphics system: {}'.format(
      ['OpenGL', 'OpenGL ES 2'][int(c_options['use_opengl_es2'] or False)]))
  
  # check if we are in a kivy-ios build
  if platform == 'ios':
      print('Kivy-IOS project environment detect, use it.')
      print('Kivy-IOS project located at {0}'.format(kivy_ios_root))
      c_options['use_ios'] = True
      c_options['use_sdl2'] = True
  
  elif platform == 'darwin':
      if c_options['use_osx_frameworks']:
          if osx_arch == "i386":
              print("Warning: building with frameworks fail on i386")
          else:
              print("OSX framework used, force to x86_64 only")
              environ["ARCHFLAGS"] = environ.get("ARCHFLAGS", "-arch x86_64")
              print("OSX ARCHFLAGS are: {}".format(environ["ARCHFLAGS"]))
  
  # detect gstreamer, only on desktop
  # works if we forced the options or in autodetection
  if platform not in ('ios', 'android') and (c_options['use_gstreamer']
                                             in (None, True)):
      gstreamer_valid = False
      if c_options['use_osx_frameworks'] and platform == 'darwin':
          # check the existence of frameworks
          f_path = '/Library/Frameworks/GStreamer.framework'
          if not exists(f_path):
              c_options['use_gstreamer'] = False
              print('GStreamer framework not found, fallback on pkg-config')
          else:
              print('GStreamer framework found')
              gstreamer_valid = True
              c_options['use_gstreamer'] = True
              gst_flags = {
                  'extra_link_args': [
                      '-F/Library/Frameworks',
                      '-Xlinker', '-rpath',
                      '-Xlinker', '/Library/Frameworks',
                      '-Xlinker', '-headerpad',
                      '-Xlinker', '190',
                      '-framework', 'GStreamer'],
                  'include_dirs': [join(f_path, 'Headers')]}
  
      if not gstreamer_valid:
          # use pkg-config approach instead
          gst_flags = pkgconfig('gstreamer-1.0')
          if 'libraries' in gst_flags:
              print('GStreamer found via pkg-config')
              c_options['use_gstreamer'] = True
  
  
  # detect SDL2, only on desktop and iOS, or android if explicitly enabled
  # works if we forced the options or in autodetection
  sdl2_flags = {}
  if c_options['use_sdl2'] or (
          platform not in ('android',) and c_options['use_sdl2'] is None):
  
      sdl2_valid = False
      if c_options['use_osx_frameworks'] and platform == 'darwin':
          # check the existence of frameworks
          sdl2_valid = True
          sdl2_flags = {
              'extra_link_args': [
                  '-F/Library/Frameworks',
                  '-Xlinker', '-rpath',
                  '-Xlinker', '/Library/Frameworks',
                  '-Xlinker', '-headerpad',
                  '-Xlinker', '190'],
              'include_dirs': [],
              'extra_compile_args': ['-F/Library/Frameworks']
          }
          for name in ('SDL2', 'SDL2_ttf', 'SDL2_image', 'SDL2_mixer'):
              f_path = '/Library/Frameworks/{}.framework'.format(name)
              if not exists(f_path):
                  print('Missing framework {}'.format(f_path))
                  sdl2_valid = False
                  continue
              sdl2_flags['extra_link_args'] += ['-framework', name]
              sdl2_flags['include_dirs'] += [join(f_path, 'Headers')]
              print('Found sdl2 frameworks: {}'.format(f_path))
              if name == 'SDL2_mixer':
                  _check_and_fix_sdl2_mixer(f_path)
  
          if not sdl2_valid:
              c_options['use_sdl2'] = False
              print('SDL2 frameworks not found, fallback on pkg-config')
          else:
              c_options['use_sdl2'] = True
              print('Activate SDL2 compilation')
  
      if not sdl2_valid and platform != "ios":
          # use pkg-config approach instead
          sdl2_flags = pkgconfig('sdl2', 'SDL2_ttf', 'SDL2_image', 'SDL2_mixer')
          if 'libraries' in sdl2_flags:
              print('SDL2 found via pkg-config')
              c_options['use_sdl2'] = True
  
  
  # -----------------------------------------------------------------------------
  # declare flags
  
  
  def get_modulename_from_file(filename):
      filename = filename.replace(sep, '/')
      pyx = '.'.join(filename.split('.')[:-1])
      pyxl = pyx.split('/')
      while pyxl[0] != 'kivy':
          pyxl.pop(0)
      if pyxl[1] == 'kivy':
          pyxl.pop(0)
      return '.'.join(pyxl)
  
  
  def expand(root, *args):
      return join(root, 'kivy', *args)
  
  
  class CythonExtension(Extension):
  
      def __init__(self, *args, **kwargs):
          Extension.__init__(self, *args, **kwargs)
          self.cython_directives = {
              'c_string_encoding': 'utf-8',
              'profile': 'USE_PROFILE' in environ,
              'embedsignature': 'USE_EMBEDSIGNATURE' in environ}
          # XXX with pip, setuptools is imported before distutils, and change
          # our pyx to c, then, cythonize doesn't happen. So force again our
          # sources
          self.sources = args[1]
  
  
  def merge(d1, *args):
      d1 = deepcopy(d1)
      for d2 in args:
          for key, value in d2.items():
              value = deepcopy(value)
              if key in d1:
                  d1[key].extend(value)
              else:
                  d1[key] = value
      return d1
  
  
  def determine_base_flags():
      flags = {
          'libraries': [],
          'include_dirs': [join(src_path, 'kivy', 'include')],
          'library_dirs': [],
          'extra_link_args': [],
          'extra_compile_args': []}
      if c_options['use_ios']:
          sysroot = environ.get('IOSSDKROOT', environ.get('SDKROOT'))
          if not sysroot:
              raise Exception('IOSSDKROOT is not set')
          flags['include_dirs'] += [sysroot]
          flags['extra_compile_args'] += ['-isysroot', sysroot]
          flags['extra_link_args'] += ['-isysroot', sysroot]
      elif platform.startswith('freebsd'):
          flags['include_dirs'] += [join(
              environ.get('LOCALBASE', '/usr/local'), 'include')]
          flags['library_dirs'] += [join(
              environ.get('LOCALBASE', '/usr/local'), 'lib')]
      elif platform == 'darwin':
          v = os.uname()
          if v[2] >= '13.0.0':
              # use xcode-select to search on the right Xcode path
              # XXX use the best SDK available instead of a specific one
              import platform as _platform
              xcode_dev = getoutput('xcode-select -p').splitlines()[0]
              sdk_mac_ver = '.'.join(_platform.mac_ver()[0].split('.')[:2])
              print('Xcode detected at {}, and using OS X{} sdk'.format(
                  xcode_dev, sdk_mac_ver))
              sysroot = join(
                  xcode_dev.decode('utf-8'),
                  'Platforms/MacOSX.platform/Developer/SDKs',
                  'MacOSX{}.sdk'.format(sdk_mac_ver),
                  'System/Library/Frameworks')
          else:
              sysroot = ('/System/Library/Frameworks/'
                         'ApplicationServices.framework/Frameworks')
          flags['extra_compile_args'] += ['-F%s' % sysroot]
          flags['extra_link_args'] += ['-F%s' % sysroot]
      elif platform == 'win32':
          flags['include_dirs'] += [get_python_inc(prefix=sys.prefix)]
          flags['library_dirs'] += [join(sys.prefix, "libs")]
      return flags
  
  
  def determine_gl_flags():
      kivy_graphics_include = join(src_path, 'kivy', 'include')
      flags = {'include_dirs': [kivy_graphics_include], 'libraries': []}
      base_flags = {'include_dirs': [kivy_graphics_include], 'libraries': []}
      if c_options['use_opengl_mock']:
          return flags, base_flags
      if platform == 'win32':
          flags['libraries'] = ['opengl32', 'glew32']
      elif platform == 'ios':
          flags['libraries'] = ['GLESv2']
          flags['extra_link_args'] = ['-framework', 'OpenGLES']
      elif platform == 'darwin':
          flags['extra_link_args'] = ['-framework', 'OpenGL', '-arch', osx_arch]
          flags['extra_compile_args'] = ['-arch', osx_arch]
      elif platform.startswith('freebsd'):
          flags['libraries'] = ['GL']
      elif platform.startswith('openbsd'):
          flags['include_dirs'] = ['/usr/X11R6/include']
          flags['library_dirs'] = ['/usr/X11R6/lib']
          flags['libraries'] = ['GL']
      elif platform == 'android':
          flags['include_dirs'] = [join(ndkplatform, 'usr', 'include')]
          flags['library_dirs'] = [join(ndkplatform, 'usr', 'lib')]
          flags['libraries'] = ['GLESv2']
      elif platform == 'rpi':
          flags['include_dirs'] = [
              '/opt/vc/include',
              '/opt/vc/include/interface/vcos/pthreads',
              '/opt/vc/include/interface/vmcs_host/linux']
          flags['library_dirs'] = ['/opt/vc/lib']
          brcm_lib_files = (
              '/opt/vc/lib/libbrcmEGL.so',
              '/opt/vc/lib/libbrcmGLESv2.so')
          if all((exists(lib) for lib in brcm_lib_files)):
              print(
                  'Found brcmEGL and brcmGLES library files'
                  'for rpi platform at /opt/vc/lib/')
              gl_libs = ['brcmEGL', 'brcmGLESv2']
          else:
              print(
                  'Failed to find brcmEGL and brcmGLESv2 library files'
                  'for rpi platform, falling back to EGL and GLESv2.')
              gl_libs = ['EGL', 'GLESv2']
          flags['libraries'] = ['bcm_host'] + gl_libs
      elif platform == 'mali':
          flags['include_dirs'] = ['/usr/include/']
          flags['library_dirs'] = ['/usr/lib/arm-linux-gnueabihf']
          flags['libraries'] = ['GLESv2']
          c_options['use_x11'] = True
          c_options['use_egl'] = True
      else:
          flags['libraries'] = ['GL']
      return flags, base_flags
  
  
  def determine_sdl2():
      flags = {}
      if not c_options['use_sdl2']:
          return flags
  
      sdl2_path = environ.get('KIVY_SDL2_PATH', None)
  
      if sdl2_flags and not sdl2_path and platform == 'darwin':
          return sdl2_flags
  
      # no pkgconfig info, or we want to use a specific sdl2 path, so perform
      # manual configuration
      flags['libraries'] = ['SDL2', 'SDL2_ttf', 'SDL2_image', 'SDL2_mixer']
      split_chr = ';' if platform == 'win32' else ':'
      sdl2_paths = sdl2_path.split(split_chr) if sdl2_path else []
  
      if not sdl2_paths:
          sdl_inc = join(sys.prefix, 'include', 'SDL2')
          if isdir(sdl_inc):
              sdl2_paths = [sdl_inc]
          sdl2_paths.extend(['/usr/local/include/SDL2', '/usr/include/SDL2'])
  
      flags['include_dirs'] = sdl2_paths
      flags['extra_link_args'] = []
      flags['extra_compile_args'] = []
      flags['library_dirs'] = (
          sdl2_paths if sdl2_paths else
          ['/usr/local/lib/'])
  
      if sdl2_flags:
          flags = merge(flags, sdl2_flags)
  
      # ensure headers for all the SDL2 and sub libraries are available
      libs_to_check = ['SDL', 'SDL_mixer', 'SDL_ttf', 'SDL_image']
      can_compile = True
      for lib in libs_to_check:
          found = False
          for d in flags['include_dirs']:
              fn = join(d, '{}.h'.format(lib))
              if exists(fn):
                  found = True
                  print('SDL2: found {} header at {}'.format(lib, fn))
                  break
  
          if not found:
              print('SDL2: missing sub library {}'.format(lib))
              can_compile = False
  
      if not can_compile:
          c_options['use_sdl2'] = False
          return {}
  
      return flags
  
  
  base_flags = determine_base_flags()
  gl_flags, gl_flags_base = determine_gl_flags()
  
  # -----------------------------------------------------------------------------
  # sources to compile
  # all the dependencies have been found manually with:
  # grep -inr -E '(cimport|include)' kivy/graphics/context_instructions.{pxd,pyx}
  graphics_dependencies = {
      'buffer.pyx': ['common.pxi'],
      'context.pxd': ['instructions.pxd', 'texture.pxd', 'vbo.pxd', 'cgl.pxd'],
      'cgl.pxd': ['common.pxi', 'config.pxi', 'gl_redirect.h'],
      'compiler.pxd': ['instructions.pxd'],
      'compiler.pyx': ['context_instructions.pxd'],
      'cgl.pyx': ['cgl.pxd'],
      'cgl_mock.pyx': ['cgl.pxd'],
      'cgl_sdl2.pyx': ['cgl.pxd'],
      'cgl_gl.pyx': ['cgl.pxd'],
      'cgl_glew.pyx': ['cgl.pxd'],
      'context_instructions.pxd': [
          'transformation.pxd', 'instructions.pxd', 'texture.pxd'],
      'fbo.pxd': ['cgl.pxd', 'instructions.pxd', 'texture.pxd'],
      'fbo.pyx': [
          'config.pxi', 'opcodes.pxi', 'transformation.pxd', 'context.pxd'],
      'gl_instructions.pyx': [
          'config.pxi', 'opcodes.pxi', 'cgl.pxd', 'instructions.pxd'],
      'instructions.pxd': [
          'vbo.pxd', 'context_instructions.pxd', 'compiler.pxd', 'shader.pxd',
          'texture.pxd', '../_event.pxd'],
      'instructions.pyx': [
          'config.pxi', 'opcodes.pxi', 'cgl.pxd',
          'context.pxd', 'common.pxi', 'vertex.pxd', 'transformation.pxd'],
      'opengl.pyx': [
          'config.pxi', 'common.pxi', 'cgl.pxd', 'gl_redirect.h'],
      'opengl_utils.pyx': [
          'opengl_utils_def.pxi', 'cgl.pxd', ],
      'shader.pxd': ['cgl.pxd', 'transformation.pxd', 'vertex.pxd'],
      'shader.pyx': [
          'config.pxi', 'common.pxi', 'cgl.pxd',
          'vertex.pxd', 'transformation.pxd', 'context.pxd',
          'gl_debug_logger.pxi'],
      'stencil_instructions.pxd': ['instructions.pxd'],
      'stencil_instructions.pyx': [
          'config.pxi', 'opcodes.pxi', 'cgl.pxd',
          'gl_debug_logger.pxi'],
      'scissor_instructions.pyx': [
          'config.pxi', 'opcodes.pxi', 'cgl.pxd'],
      'svg.pyx': ['config.pxi', 'common.pxi', 'texture.pxd', 'instructions.pxd',
                  'vertex_instructions.pxd', 'tesselator.pxd'],
      'texture.pxd': ['cgl.pxd'],
      'texture.pyx': [
          'config.pxi', 'common.pxi', 'opengl_utils_def.pxi', 'context.pxd',
          'cgl.pxd', 'opengl_utils.pxd',
          'img_tools.pxi', 'gl_debug_logger.pxi'],
      'vbo.pxd': ['buffer.pxd', 'cgl.pxd', 'vertex.pxd'],
      'vbo.pyx': [
          'config.pxi', 'common.pxi', 'context.pxd',
          'instructions.pxd', 'shader.pxd', 'gl_debug_logger.pxi'],
      'vertex.pxd': ['cgl.pxd'],
      'vertex.pyx': ['config.pxi', 'common.pxi'],
      'vertex_instructions.pyx': [
          'config.pxi', 'common.pxi', 'vbo.pxd', 'vertex.pxd',
          'instructions.pxd', 'vertex_instructions.pxd',
          'cgl.pxd', 'texture.pxd', 'vertex_instructions_line.pxi'],
      'vertex_instructions_line.pxi': ['stencil_instructions.pxd']}
  
  sources = {
      '_event.pyx': merge(base_flags, {'depends': ['properties.pxd']}),
      '_clock.pyx': {},
      'weakproxy.pyx': {},
      'properties.pyx': merge(base_flags, {'depends': ['_event.pxd']}),
      'graphics/buffer.pyx': merge(base_flags, gl_flags_base),
      'graphics/context.pyx': merge(base_flags, gl_flags_base),
      'graphics/compiler.pyx': merge(base_flags, gl_flags_base),
      'graphics/context_instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/fbo.pyx': merge(base_flags, gl_flags_base),
      'graphics/gl_instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/opengl.pyx': merge(base_flags, gl_flags_base),
      'graphics/opengl_utils.pyx': merge(base_flags, gl_flags_base),
      'graphics/shader.pyx': merge(base_flags, gl_flags_base),
      'graphics/stencil_instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/scissor_instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/texture.pyx': merge(base_flags, gl_flags_base),
      'graphics/transformation.pyx': merge(base_flags, gl_flags_base),
      'graphics/vbo.pyx': merge(base_flags, gl_flags_base),
      'graphics/vertex.pyx': merge(base_flags, gl_flags_base),
      'graphics/vertex_instructions.pyx': merge(base_flags, gl_flags_base),
      'graphics/cgl.pyx': merge(base_flags, gl_flags_base),
      'graphics/cgl_backend/cgl_mock.pyx': merge(base_flags, gl_flags_base),
      'graphics/cgl_backend/cgl_gl.pyx': merge(base_flags, gl_flags),
      'graphics/cgl_backend/cgl_glew.pyx': merge(base_flags, gl_flags),
      'graphics/cgl_backend/cgl_sdl2.pyx': merge(base_flags, gl_flags_base),
      'graphics/cgl_backend/cgl_debug.pyx': merge(base_flags, gl_flags_base),
      'core/text/text_layout.pyx': base_flags,
      'core/window/window_info.pyx': base_flags,
      'graphics/tesselator.pyx': merge(base_flags, {
          'include_dirs': ['kivy/lib/libtess2/Include'],
          'c_depends': [
              'lib/libtess2/Source/bucketalloc.c',
              'lib/libtess2/Source/dict.c',
              'lib/libtess2/Source/geom.c',
              'lib/libtess2/Source/mesh.c',
              'lib/libtess2/Source/priorityq.c',
              'lib/libtess2/Source/sweep.c',
              'lib/libtess2/Source/tess.c'
          ]
      }),
      'graphics/svg.pyx': merge(base_flags, gl_flags_base)
  }
  
  if c_options["use_sdl2"]:
      sdl2_flags = determine_sdl2()
  
  if c_options['use_sdl2'] and sdl2_flags:
      sources['graphics/cgl_backend/cgl_sdl2.pyx'] = merge(
          sources['graphics/cgl_backend/cgl_sdl2.pyx'], sdl2_flags)
      sdl2_depends = {'depends': ['lib/sdl2.pxi']}
      for source_file in ('core/window/_window_sdl2.pyx',
                          'core/image/_img_sdl2.pyx',
                          'core/text/_text_sdl2.pyx',
                          'core/audio/audio_sdl2.pyx',
                          'core/clipboard/_clipboard_sdl2.pyx'):
          sources[source_file] = merge(
              base_flags, sdl2_flags, sdl2_depends)
  
  if c_options['use_pangoft2'] in (None, True) and platform not in (
                                        'android', 'ios', 'windows'):
      pango_flags = pkgconfig('pangoft2')
      if pango_flags and 'libraries' in pango_flags:
          print('Pango: pangoft2 found via pkg-config')
          c_options['use_pangoft2'] = True
          pango_depends = {'depends': ['lib/pangoft2.pxi',
                                       'lib/pangoft2.h']}
          sources['core/text/_text_pango.pyx'] = merge(
                  base_flags, pango_flags, pango_depends)
  
  if platform in ('darwin', 'ios'):
      # activate ImageIO provider for our core image
      if platform == 'ios':
          osx_flags = {'extra_link_args': [
              '-framework', 'Foundation',
              '-framework', 'UIKit',
              '-framework', 'AudioToolbox',
              '-framework', 'CoreGraphics',
              '-framework', 'QuartzCore',
              '-framework', 'ImageIO',
              '-framework', 'Accelerate']}
      else:
          osx_flags = {'extra_link_args': [
              '-framework', 'ApplicationServices']}
      sources['core/image/img_imageio.pyx'] = merge(
          base_flags, osx_flags)
  
  if c_options['use_avfoundation']:
      import platform as _platform
      mac_ver = [int(x) for x in _platform.mac_ver()[0].split('.')[:2]]
      if mac_ver >= [10, 7]:
          osx_flags = {
              'extra_link_args': ['-framework', 'AVFoundation'],
              'extra_compile_args': ['-ObjC++'],
              'depends': ['core/camera/camera_avfoundation_implem.m']}
          sources['core/camera/camera_avfoundation.pyx'] = merge(
              base_flags, osx_flags)
      else:
          print('AVFoundation cannot be used, OSX >= 10.7 is required')
  
  if c_options['use_rpi']:
      sources['lib/vidcore_lite/egl.pyx'] = merge(
          base_flags, gl_flags)
      sources['lib/vidcore_lite/bcm.pyx'] = merge(
          base_flags, gl_flags)
  
  if c_options['use_x11']:
      libs = ['Xrender', 'X11']
      if c_options['use_egl']:
          libs += ['EGL']
      else:
          libs += ['GL']
      sources['core/window/window_x11.pyx'] = merge(
          base_flags, gl_flags, {
              # FIXME add an option to depend on them but not compile them
              # cause keytab is included in core, and core is included in
              # window_x11
              #
              # 'depends': [
              #    'core/window/window_x11_keytab.c',
              #    'core/window/window_x11_core.c'],
              'libraries': libs})
  
  if c_options['use_gstreamer']:
      sources['lib/gstplayer/_gstplayer.pyx'] = merge(
          base_flags, gst_flags, {
              'depends': ['lib/gstplayer/_gstplayer.h']})
  
  
  # -----------------------------------------------------------------------------
  # extension modules
  
  def get_dependencies(name, deps=None):
      if deps is None:
          deps = []
      for dep in graphics_dependencies.get(name, []):
          if dep not in deps:
              deps.append(dep)
              get_dependencies(dep, deps)
      return deps
  
  
  def resolve_dependencies(fn, depends):
      fn = basename(fn)
      deps = []
      get_dependencies(fn, deps)
      get_dependencies(fn.replace('.pyx', '.pxd'), deps)
  
      deps_final = []
      paths_to_test = ['graphics', 'include']
      for dep in deps:
          found = False
          for path in paths_to_test:
              filename = expand(src_path, path, dep)
              if exists(filename):
                  deps_final.append(filename)
                  found = True
                  break
          if not found:
              print('ERROR: Dependency for {} not resolved: {}'.format(
                  fn, dep
              ))
  
      return deps_final
  
  
  def get_extensions_from_sources(sources):
      ext_modules = []
      if environ.get('KIVY_FAKE_BUILDEXT'):
          print('Fake build_ext asked, will generate only .h/.c')
          return ext_modules
      for pyx, flags in sources.items():
          is_graphics = pyx.startswith('graphics')
          pyx = expand(src_path, pyx)
          depends = [expand(src_path, x) for x in flags.pop('depends', [])]
          c_depends = [expand(src_path, x) for x in flags.pop('c_depends', [])]
          if not have_cython:
              pyx = '%s.c' % pyx[:-4]
          if is_graphics:
              depends = resolve_dependencies(pyx, depends)
          f_depends = [x for x in depends if x.rsplit('.', 1)[-1] in (
              'c', 'cpp', 'm')]
          module_name = get_modulename_from_file(pyx)
          flags_clean = {'depends': depends}
          for key, value in flags.items():
              if len(value):
                  flags_clean[key] = value
          ext_modules.append(CythonExtension(
              module_name, [pyx] + f_depends + c_depends, **flags_clean))
      return ext_modules
  
  
  ext_modules = get_extensions_from_sources(sources)
  
  
  # -----------------------------------------------------------------------------
  # automatically detect data files
  split_examples = int(environ.get('KIVY_SPLIT_EXAMPLES', '0'))
  data_file_prefix = 'share/kivy-'
  examples = {}
  examples_allowed_ext = ('readme', 'py', 'wav', 'png', 'jpg', 'svg', 'json',
                          'avi', 'gif', 'txt', 'ttf', 'obj', 'mtl', 'kv', 'mpg',
                          'glsl', 'zip')
  for root, subFolders, files in walk('examples'):
      for fn in files:
          ext = fn.split('.')[-1].lower()
          if ext not in examples_allowed_ext:
              continue
          filename = join(root, fn)
          directory = '%s%s' % (data_file_prefix, dirname(filename))
          if directory not in examples:
              examples[directory] = []
          examples[directory].append(filename)
  
  binary_deps = []
  binary_deps_path = join(src_path, 'kivy', 'binary_deps')
  if isdir(binary_deps_path):
      for root, dirnames, filenames in walk(binary_deps_path):
          for fname in filenames:
              binary_deps.append(
                  join(root.replace(binary_deps_path, 'binary_deps'), fname))
  
  # -----------------------------------------------------------------------------
  # setup !
  if not build_examples:
      setup(
          name='Kivy',
          version=get_version(),
          author='Kivy Team and other contributors',
          author_email='kivy-dev@googlegroups.com',
          url='http://kivy.org',
          license='MIT',
          description=(
              'A software library for rapid development of '
              'hardware-accelerated multitouch applications.'),
          long_description=get_description(),
          ext_modules=ext_modules,
          cmdclass=cmdclass,
          packages=[
              'kivy',
              'kivy.core',
              'kivy.core.audio',
              'kivy.core.camera',
              'kivy.core.clipboard',
              'kivy.core.image',
              'kivy.core.gl',
              'kivy.core.spelling',
              'kivy.core.text',
              'kivy.core.video',
              'kivy.core.window',
              'kivy.deps',
              'kivy.effects',
              'kivy.graphics',
              'kivy.graphics.cgl_backend',
              'kivy.garden',
              'kivy.input',
              'kivy.input.postproc',
              'kivy.input.providers',
              'kivy.lang',
              'kivy.lib',
              'kivy.lib.gstplayer',
              'kivy.lib.vidcore_lite',
              'kivy.modules',
              'kivy.network',
              'kivy.storage',
              'kivy.tests',
              'kivy.tools',
              'kivy.tools.packaging',
              'kivy.tools.packaging.pyinstaller_hooks',
              'kivy.tools.highlight',
              'kivy.extras',
              'kivy.uix',
              'kivy.uix.behaviors',
              'kivy.uix.recycleview',
          ],
          package_dir={'kivy': 'kivy'},
          package_data={'kivy': [
              'setupconfig.py',
              '*.pxd',
              '*.pxi',
              'core/text/*.pxd',
              'core/text/*.pxi',
              'core/window/*.pxi',
              'core/window/*.pxd',
              'graphics/*.pxd',
              'graphics/*.pxi',
              'graphics/*.h',
              'include/*',
              'lib/vidcore_lite/*.pxd',
              'lib/vidcore_lite/*.pxi',
              'data/*.kv',
              'data/*.json',
              'data/fonts/*.ttf',
              'data/images/*.png',
              'data/images/*.jpg',
              'data/images/*.gif',
              'data/images/*.atlas',
              'data/keyboards/*.json',
              'data/logo/*.png',
              'data/glsl/*.png',
              'data/glsl/*.vs',
              'data/glsl/*.fs',
              'tests/*.zip',
              'tests/*.kv',
              'tests/*.png',
              'tests/*.ttf',
              'tests/*.ogg',
              'tools/gles_compat/*',
              'tools/highlight/*',
              'tools/packaging/README.txt',
              'tools/packaging/win32/kivy.bat',
              'tools/packaging/win32/kivyenv.sh',
              'tools/packaging/win32/README.txt',
              'tools/packaging/osx/Info.plist',
              'tools/packaging/osx/InfoPlist.strings',
              'tools/packaging/osx/kivy.sh',
              'tools/pep8checker/*',
              'tools/theming/defaulttheme/*',
          ] + binary_deps},
          data_files=[] if split_examples else list(examples.items()),
          classifiers=[
              'Development Status :: 5 - Production/Stable',
              'Environment :: MacOS X',
              'Environment :: Win32 (MS Windows)',
              'Environment :: X11 Applications',
              'Intended Audience :: Developers',
              'Intended Audience :: End Users/Desktop',
              'Intended Audience :: Information Technology',
              'Intended Audience :: Science/Research',
              'License :: OSI Approved :: MIT License',
              'Natural Language :: English',
              'Operating System :: MacOS :: MacOS X',
              'Operating System :: Microsoft :: Windows',
              'Operating System :: POSIX :: BSD :: FreeBSD',
              'Operating System :: POSIX :: Linux',
              'Programming Language :: Python :: 2.7',
              'Programming Language :: Python :: 3.4',
              'Programming Language :: Python :: 3.5',
              'Programming Language :: Python :: 3.6',
              'Topic :: Artistic Software',
              'Topic :: Games/Entertainment',
              'Topic :: Multimedia :: Graphics :: 3D Rendering',
              'Topic :: Multimedia :: Graphics :: Capture :: Digital Camera',
              'Topic :: Multimedia :: Graphics :: Presentation',
              'Topic :: Multimedia :: Graphics :: Viewers',
              'Topic :: Multimedia :: Sound/Audio :: Players :: MP3',
              'Topic :: Multimedia :: Video :: Display',
              'Topic :: Scientific/Engineering :: Human Machine Interfaces',
              'Topic :: Scientific/Engineering :: Visualization',
              ('Topic :: Software Development :: Libraries :: '
               'Application Frameworks'),
              'Topic :: Software Development :: User Interfaces'],
          dependency_links=[
              'https://github.com/kivy-garden/garden/archive/master.zip'],
          install_requires=[
              'Kivy-Garden>=0.1.4', 'docutils', 'pygments'
          ],
          extra_requires={
              'tuio': ['oscpy']
          },
          setup_requires=[
              'cython>=' + MIN_CYTHON_STRING
          ] if not skip_cython else [])
  else:
      setup(
          name='Kivy-examples',
          version=get_version(),
          author='Kivy Team and other contributors',
          author_email='kivy-dev@googlegroups.com',
          url='http://kivy.org',
          license='MIT',
          description=('Kivy examples.'),
          long_description=get_description(),
          data_files=list(examples.items()))
  