[Bf-committers] Python 3.3 problems on Ubuntu/Debian

[IRIE Shinsuke]

Hi,

I was trying to build Blender with python3.3-dev package on Ubuntu
12.10, but the builds failed as follows:

[ 33%] Building C object source/blender/python/intern/CMakeFiles/bf_python.dir/gpu.c.o
In file included from /home/irie/Subversion/Blender/blender/source/blender/python/generic/bgl.c:38:0:
/usr/include/python3.3m/Python.h:8:22: fatal error: pyconfig.h: No such file or directory
compilation terminated.

On Ubuntu/Debian, Python.h and pyconfig.h are placed in:

  /usr/include/python3.3m/Python.h
  /usr/include/x86_64-linux-gnu/python3.3m/pyconfig.h

So the error occurs if assuming all headers are in the same directory.
I reported this problem in Debian bug tracker.  Then, Debian's package
maintainer considers this is Blender's bug, and he said
"Please use python3.3-config --include".

"python3.3-config --include" returns:

  -I/usr/include/python3.3m -I/usr/include/x86_64-linux-gnu/python3.3m

and indeed the build succeeded after setting CMAKE_C_FLAGS them.
I attempted to set these paths to PYTHON_INCLUDE_DIR, but multiple
paths cannot be set to it...

I think FindPythonLibsUnix.cmake needs drastic changes.


Also, there is another problem that numpy cannot be found when using
Python3.3 on Ubuntu/Debian.  I get the following message:

CMake Warning at CMakeLists.txt:1965 (message):
  'numpy' path could not be found in:

  '/usr/lib/x86_64-linux-gnu/python3.3/site-packages/numpy',
  '/usr/lib/x86_64-linux-gnu/python3/site-packages/numpy',
  '/usr/lib/x86_64-linux-gnu/python3.3/dist-packages/numpy',
  '/usr/lib/x86_64-linux-gnu/python3/dist-packages/numpy',
  WITH_PYTHON_INSTALL_NUMPY option will be ignored when installing python

CMakeList.txt searches the above multi-arch paths for numpy, but
numpy is actually in /usr/lib/python3/dist-packages/numpy.


Thanks,
-- 
IRIE Shinsuke