https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86450
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Steve Kargl from comment #5) > This fixes the bootstrap failure > > Index: libstdc++-v3/acinclude.m4 > =================================================================== > --- libstdc++-v3/acinclude.m4 (revision 262541) > +++ libstdc++-v3/acinclude.m4 (working copy) > @@ -733,7 +733,7 @@ AC_DEFUN([GLIBCXX_EXPORT_FLAGS], [ > # OPTIMIZE_CXXFLAGS = -O3 -fstrict-aliasing -fvtable-gc > AC_SUBST(OPTIMIZE_CXXFLAGS) > > - WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi' > + WARN_FLAGS='-Wall -Wextra -Wwrite-strings -Wcast-qual' > AC_SUBST(WARN_FLAGS) > ]) > See https://gcc.gnu.org/ml/gcc-patches/2018-06/msg01923.html and https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00059.html
