https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Steve Kargl from comment #3) > On Tue, Jul 10, 2018 at 09:55:15AM +0000, rguenth at gcc dot gnu.org wrote: > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450 > > > > --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- > > Can you check whether removing --enable-maintainer-mode fixes the build? > > I've > > not had this issue but I see those Wabi warnings as non-error. > > > > Yes, removing --enable-maintainer-mode allows the bootstrap to > complete. Problem is I need to use that option as I have change > a chnaged a Makefile.am, so need to regenerate the Makefile.in. I still don't understand this requirement. Using maintainer mode is not the only way to regenerate autoconf files, and has the downside of enabling -Werror. Can you try --disable-werror ?