the trigger of the issue is part of openmotif (luckly is a optional little component, and that's why nobody found it out before, openmotif itself builds fine and the componente failure won't even break the buildchain),
preprocessed source and source follows built it with gcc -O2 -pipe -mcpu=7450 -mtune=7450 -maltivec -mabi=altivec -fno-strict-aliasing -fsigned-char -I../.. -I../../exports/include -I../../imports/x11/include -Dlinux -D__powerpc__ -D_POSIX_C_SOURCE=199309L -D_POSIX_SOURCE -D_XOPEN_SOURCE=500L -D_BSD_SOURCE -D_SVID_SOURCE -DNO_MESSAGE_CATALOG -DFUNCPROTO=15 -DNARROWPROTO -c -o mkcatdefs.o mkcatdefs.c -- Summary: internal compiler error: in final_scan_insn, at final.c:2429 Product: gcc Version: 3.4.1 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: lu_zero at gentoo dot org CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: powerpc-unknown-linux-gnu GCC host triplet: powerpc-unknown-linux-gnu GCC target triplet: powerpc-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18096