7.0.3 on AIX 4.2.1.0.06

I got this cd from GreatBridge that has 7.0.3 on it, so I tried to do a
configure on my AIX 4.2.1.0.06 machine. I have egcs and gnu make installed
from the bull archives.

configure says that xlc is not installed, and gcc(egcs) cant create
executables.

I wrote a simple "hello" program and it compiled fine.

Ideas?

Walter L. Preuninger II