http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46333
--- Comment #13 from Jay <jay.krell at cornell dot edu> 2010-11-07 02:04:14 UTC --- gmpn_add/sub/cmp were because I have drastically slashed mpc/mpfr/gmp dependency, and optimizations off here. That is fixed. Now I can compile/link our cc1 analog! That's all we use. I can maybe continue this adventure with unpatched gmp/mpfr/mpc, trunk gcc, I'd limit myself to C and C++ frontends if I do. It could well be that without -disable-bootstrap, it doesn't use C++ until later stages and then works.