There's always StormC4, which is like 50 euro's now :-)
It's supposedly gcc 2.95.3 compliant (at least it seems to be here). Certianly it supports the main ANSI C/C++ (and the respective GNU extensions) stuff I've thrown at it.
-edit-
I just did some checks, creates WOS PPC, mixed binary and 680x0 all fine. Also, it seems that WOS PPC native compilers are invoked. No wonder it compiled code so much faster than the other 040 only system I have here.