Segfault generating src/post_modules/GL/auto.c on PowerPC

[Marcus Comstedt (ACROSS) (Hail Ilpalazzo!) @ Pike (-) developers forum]

Hm, it looks like there is an official ebuild of gcc-6 in Gentoo now
(it just has the empty keyword set, indicating "probably breaks on all
 architectures" :), so I'll give it a spin.  Which ABI did you say you
were buiding?