title: Buildozer can't compile Cython
body: <p>I am trying to build my kivy application, but having run <code>buildozer android debug --verbose</code> the only I get is following:</p>
  
  <pre><code>[...]
  
  Run prebuild
  Call prebuild_hostpython
  Call prebuild_python
  Call prebuild_sdl
  Call prebuild_pygame
  Call prebuild_pyjnius
  Call prebuild_android
  Call prebuild_kivy
  Run build
  Skipped build_hostpython
  Skipped build_python
  Skipped build_sdl
  Skipped build_pygame
  Call build_pyjnius
  Entering in ARM environment
  Compiler found at /home/michal/.buildozer/android/platform/android-ndk-r9c/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc
  /home/michal/Dokumenty/Projekty/Labirynt/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
    warnings.warn(msg)
  running build_ext
  building 'jnius' extension
  arm-linux-androideabi-gcc -DANDROID -mandroid -fomit-frame-pointer --sysroot /home/michal/.buildozer/android/platform/android-ndk-r9c/platforms/android-14/arch-arm -DNDEBUG -DANDROID -mandroid -fomit-frame-pointer --sysroot /home/michal/.buildozer/android/platform/android-ndk-r9c/platforms/android-14/arch-arm -fPIC -I/home/michal/Dokumenty/Projekty/Labirynt/.buildozer/android/platform/python-for-android/build/python-install/include/python2.7 -c jnius/jnius.c -o build/temp.linux-x86_64-2.7/jnius/jnius.o
  jnius/jnius.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.
   #error Do not use this file, it is the result of a failed Cython compilation.
    ^
  error: command 'arm-linux-androideabi-gcc' failed with exit status 1
  
  Error compiling Cython file:
  ------------------------------------------------------------
  ...
              if py_arg is None:
                  j_args[index].l = NULL
              elif isinstance(py_arg, basestring) and \
                      argtype in ('Ljava/lang/String;', 'Ljava/lang/Object;'):
                  j_args[index].l = j_env[0].NewStringUTF(
                          j_env, &lt;char *&gt;&lt;bytes&gt;py_arg.encode('utf-8'))
                                ^
  ------------------------------------------------------------
  
  jnius/jnius_conversion.pxi:54:31: Casting temporary Python object to non-numeric non-Python type
  /home/michal/Dokumenty/Projekty/Labirynt/.buildozer/android/platform/python-for-android/build/python-install/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
    warnings.warn(msg)
  running build_ext
  building 'jnius' extension
  arm-linux-androideabi-gcc -DANDROID -mandroid -fomit-frame-pointer --sysroot /home/michal/.buildozer/android/platform/android-ndk-r9c/platforms/android-14/arch-arm -DNDEBUG -DANDROID -mandroid -fomit-frame-pointer --sysroot /home/michal/.buildozer/android/platform/android-ndk-r9c/platforms/android-14/arch-arm -fPIC -I/home/michal/Dokumenty/Projekty/Labirynt/.buildozer/android/platform/python-for-android/build/python-install/include/python2.7 -c jnius/jnius.c -o build/temp.linux-x86_64-2.7/jnius/jnius.o
  jnius/jnius.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.
   #error Do not use this file, it is the result of a failed Cython compilation.
    ^
  error: command 'arm-linux-androideabi-gcc' failed with exit status 1
  # Command failed: ./distribute.sh -m "kivy" -d "testapp"
  </code></pre>
  
  <p>I'm using Archlinux, 64bit, python2 2.7.8-2, with aur/python2-kivy-git.</p>
  
  <p>When i'm trying to install aur/python2-kivy I get</p>
  
  <pre><code>Found GLES 2.0 headers at /usr/include/GLES2/gl2.h
   /usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'dependency_links'
     warnings.warn(msg)
   /usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
     warnings.warn(msg)
  running build
  running build_py
  running build_ext
  Build configuration is:
   * use_rpi = False
   * use_opengl_es2 = True
   * use_opengl_debug = False
   * use_glew = False
   * use_sdl = False
   * use_ios = False
   * use_mesagl = False
   * use_x11 = False
   * use_gstreamer = True
   * use_avfoundation = False
  Generate config.h
  Generate config.pxi
  Detected compiler is unix
  skipping 'kivy/graphics/texture.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/vertex.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/fbo.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/context.c' Cython extension (up-to-date)
  skipping 'kivy/properties.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/context_instructions.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/instructions.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/stencil_instructions.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/opengl.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/transformation.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/vbo.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/opengl_utils.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/c_opengl_debug.c' Cython extension (up-to-date)
  skipping 'kivy/graphics/gl_instructions.c' Cython extension (up-to-date)
  cythoning kivy/lib/gstplayer/_gstplayer.pyx to kivy/lib/gstplayer/_gstplayer.c
  
   Error compiling Cython file:
   ------------------------------------------------------------
   ...
  
               g_object_set_void(self.playbin, 'video-sink', self.fakesink)
  
           # configure playbin
           g_object_set_int(self.pipeline, 'async-handling', 1)
           c_uri = &lt;bytes&gt;self.uri.encode('utf-8')
                  ^
   ------------------------------------------------------------
  
   kivy/lib/gstplayer/_gstplayer.pyx:259:16: Storing unsafe C derivative of temporary Python reference
  building 'kivy.lib.gstplayer._gstplayer' extension
  gcc -pthread -DNDEBUG -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4 -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/gstreamer-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/python2.7 -c kivy/lib/gstplayer/_gstplayer.c -o build/temp.linux-x86_64-2.7/kivy/lib/gstplayer/_gstplayer.o
  kivy/lib/gstplayer/_gstplayer.c:1:2: error: #error Do not use this file, it is the result of a failed Cython compilation.
   #error Do not use this file, it is the result of a failed Cython compilation.
    ^
   error: command 'gcc' failed with exit status 1
  </code></pre>
  
  <p>How can I make it work?</p>