[CMake] FindPythonLibs

[James Bigler]

So FindPythonLibs seems to favor the static version of python that is 
found in /usr/lib/python?.?/config .

This is find and dandy until you try to call some swigged code from an 
embedded python interpreter.

Swig will compile an interface library (called _example.so).  This will 
be statically linked against /usr/lib/python2.4/config/libpython2.4.a as 
per the FindPythonLibs's PYTHON_LIBRARIES variable.

Now I compile another shared library (called libscene_python.so) that 
contains the embedded python code, so I need to link against 
/usr/lib/python2.4/config/libpython2.4.a again.

My main program then dynamically loads libscene_python.so which starts 
up the python interpretor.  This interpreter eventually calls the swig 
code inside _example.so.  However, because each library was compiled 
using the static version of the library, there are in actually *2* 
interpreters floating around in memory space from each of the 
instantiations of the statically linked library.

If you link against a shared version of libpython, life is good, because 
there is only one "python core" in memory.

I was able to do this, by hard coding the library from the static one to 
the shared one.  Is there a way to control this better than this manual 
tweak or to favor the shared versions of libraries?

Thanks,
James