Hi, As far as I've read it should be possible to upgrade from any 4.x version to 5.0. I tried that, and things get caught at using gperf to build cc1plus. rigging the Makefile it turns out that the gperf used is not the one in: /usr/obj/usr/src/i386/usr/bin/gperf but just the regular /usr/bin/gperf And on 4.2 that one does not understand -E. So to keep on going I just added the full path in the Makefile. If my first assumption was correct, then fixing it for real is up to those that know where to look. --WjW R{.n+zwfj)mfhkyR+a{.n+盱.)w*z