[CMake] cmake on Snow Leopard

[Celil Rufat]

I am experiencing still another problem. I can no longer link to any of the
older libraries. The compilation fails with the following error message:

ld: warning: in /Library/Frameworks//Python.framework/Python, missing
required architecture x86_64 in file
Undefined symbols:
  "_PyErr_Occurred", referenced from:
      _SWIG_Python_AddErrorMsg in TMPathPYTHON_wrap.c.o
...