https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65351
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Thanks for fixing that thinko. Please regenerate not just libiberty/configure, but also {gcc,libada,libgcc}/configure too. The patch is ok for trunk with those changes with proper ChangeLog entry and when posted to gcc-patches. I agree --enable-host-shared for darwin can certainly wait for stage1 or for whenever later anybody is actually interested in that on darwin.