https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117600
--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- libgcc is always built with the target compiler. --disable-werror is intended to allow compliers other than the one being built to work when they generate warnings based on different algorithms. It would be inappropriate to cross-link the two issues under the same configure flag.
