## version of Bison nearby...
BISON = $(top_builddir)/tests/bison
BISON_IN = $(top_srcdir)/tests/bison.in
-YACC = $(BISON) -y
-AM_YFLAGS = -d -v --warnings=all,error --report=all
+YACC = $(BISON) -o y.tab.c
+AM_YFLAGS = -d -v -Werror -Wall -Wno-yacc --report=all
# Initialization before completion by local.mk's.
AM_CFLAGS = $(WARN_CFLAGS)