http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55293
--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-11-13 09:42:41 UTC --- (In reply to comment #10) > > The end result of the long long experiment is that there is something wrong in > gcc 4.7.2 that make it near impossible to bootstrap. No, it means you haven't been able to bootstrap with the unconventional configuration you are using. >From other people's reports if you stop trying to build 64-bit only or bootstrap with the system compiler it works, but you've said you don't want to do that. I hardly think that qualifies as "impossible to bootstrap".