title: Kivy Buildozer VM sh.ErrorReturnCode_127 error
body: <p>I am trying to build a simple Python program to an APK with Buildozer on the Kivy Virtual Machine. Every time I run <code>buildozer android debug</code>, I get the following error </p>
  
  <pre><code>pid 2134:
  Traceback (most recent call last):
    File "/usr/lib/python2.7/threading.py", line 801, in __bootstrap_inner
      self.run()
    File "/usr/lib/python2.7/threading.py", line 754, in run
      self.__target(*self.__args, **self.__kwargs)
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 1540, in wrap
      fn(*args, **kwargs)
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 2459, in    background_thread
      handle_exit_code(exit_code)
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 2157, in fn
      return self.command.handle_command_exit_code(exit_code)
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 815, in     handle_command_exit_code
  raise exc
  ErrorReturnCode_127: 
  
    RAN: /home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform        /build/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh
  
    STDOUT:
  /home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/build    /build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh: 2:     exec: autoreconf: not found
  
  
    STDERR:
  
  
  Traceback (most recent call last):
    File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
      "__main__", fname, loader, pkg_name)
    File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
      exec code in run_globals
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform    /python-for-android/pythonforandroid/toolchain.py", line 1073, in &lt;module&gt;
      main()
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 1067, in main
      ToolchainCL()
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 576, in __init__
      getattr(self, args.subparser_name.replace('-', '_'))(args)
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 151, in wrapper_func
      build_dist_from_args(ctx, dist, args)
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/python-for-android/pythonforandroid/toolchain.py", line 200, in     build_dist_from_args
      build_recipes(build_order, python_modules, ctx)
    File "pythonforandroid/build.py", line 562, in build_recipes
    File "/home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/python-for-android/pythonforandroid/recipes/libffi/__init__.py", line 33, in     build_arch
      shprint(sh.Command('./autogen.sh'), _env=env)
    File "pythonforandroid/logger.py", line 178, in shprint
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 863, in next
      self.wait()
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 792, in wait
      self.handle_command_exit_code(exit_code)
    File "/usr/local/lib/python2.7/dist-packages/sh.py", line 815, in     handle_command_exit_code
      raise exc
  sh.ErrorReturnCode_127: 
  
    RAN: /home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/build/build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh
  
    STDOUT:
  /home/kivy/Desktop/Projects/Kivy_Test/.buildozer/android/platform/build    /build/other_builds/libffi/armeabi-v7a__ndk_target_21/libffi/autogen.sh: 2:     exec: autoreconf: not found
  
  
    STDERR:
  
  # Command failed: /usr/bin/python -m pythonforandroid.toolchain create         --dist_name=kivytest --bootstrap=sdl2 --requirements=python3,kivy --arch         armeabi-v7a --copy-libs --color=always --storage-dir="/home/kivy/Desktop    /Projects/Kivy_Test/.buildozer/android/platform/build" --ndk-api=21
  # 
  # Buildozer failed to execute the last command
  # The error might be hidden in the log above this error
  # Please read the full log, and search for it before
  # raising an issue with buildozer itself.
  # In case of a bug report, please add a full log with log_level = 2
  </code></pre>
  
  <p>Note: my <code>log_level</code> in my <code>buildozer.spec</code> is 2. I have tried to install some dependencies, but the Kivy VM does not let me for whatever reason. If anyone could help me out, that would be great!</p>