https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97308
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> --- Created attachment 49319 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49319&action=edit config.log from gmp subdirectory Here it is. For what it is worth, I now tried bootstrapping with CC=cc and CXX=c++, and things seem to be working (so far).
