Clean cython build error

[brussee]

From: https://gist.github.com/brussee/bc376f8491a9e2ac42a4

Check build dependencies for Ubuntu
Packages missing: cython 
It might break the compilation, except if you installed thoses packages manually.
Check environment
**snip**
kivy/graphics/vbo.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

As per instructions I did install manually: https://buildozer.readthedocs.org/en/latest/installation.html?highlight=cython

$ sudo pip install --upgrade cython

The directory '/home/paul/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/home/paul/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already up-to-date: cython in /usr/local/lib/python2.7/dist-packages

[whirm]

For higienic reasons, don't install pip stuff as root. Use --user instead so it gets installed into your $HOME.

[brussee]

I cleaned up as much of the pip packages I could and reinstalled them as --user.

Did this for Ubuntu: http://kivy.org/docs/installation/installation-linux.html
Choose Kivy nightly build 1.9.1 with OS cython 0.23.3 and python cython 0.23.4

Also manually removed /python-4-android/build and buildozer distclean and android clean.

[brussee]

Now I get this: https://gist.github.com/brussee/f90753397393bd61310d

running build_ext
failed to import Cython: /home/paul/.local/lib/python2.7/site-packages/Cython/Compiler/Scanning.so:
undefined symbol: PyUnicodeUCS4_DecodeUTF8
error: Cython does not appear to be installed

Following advice from: http://stackoverflow.com/questions/16871799/trying-to-import-a-module-undefined-symbol-pyunicodeucs4-decodeutf8

[whirm]

I may be finding the wrong libraries (maybe some of the manually instaled stuff?).
Do an ldd /home/paul/.local/lib/python2.7/site-packages/Cython/Compiler/Scanning.so to see if it's finding the wrong stuff.

[brussee]

$ ldd /home/paul/.local/lib/python2.7/site-packages/Cython/Compiler/Scanning.so
linux-vdso.so.1 => (0x00007ffc86fb0000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fbd309a6000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fbd305dc000)
/lib64/ld-linux-x86-64.so.2 (0x00005595e2cde000)

According to the code from: https://docs.python.org/2.7/faq/extending.html#when-importing-module-x-why-do-i-get-undefined-symbol-pyunicodeucs2
I do have the appropriate python build.... (>>> sys.maxunicode 1114111)

[whirm]

I'll come by in a bit and we can have a look at it.

[brussee]

Aborted this approach last year. Switched to the new p4a toolchain.