problem compiling on x86_64 (Slamd64)

[Nathan Becker]

I'm having trouble compiling LyX 1.3.6 on an AMD64 machine.  For some 
reason LyX is looking in the /usr/lib directory for some libraries even 
though all environment variables point it to /usr/lib64

Here is the error message:
/usr/lib/libGL.so: could not read symbols: File in wrong format
It should be trying to use /usr/lib64/libGL.so

The library path is set appropriately in the Makefile.

Thanks for your help.