https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450
--- Comment #4 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- 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 > > Richard Biener <rguenth at gcc dot gnu.org> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > Keywords| |build > Component|bootstrap |libstdc++ > > --- 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. > This is the likely problem that needs to be fixed. % find . -type f | xargs grep Wabi ... ./libstdc++-v3/acinclude.m4: WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi'