+AX_APPEND_COMPILE_FLAGS([-Werror -Wunused-result])
+AX_APPEND_COMPILE_FLAGS([-Werror -Wunused-variable])
+AX_APPEND_COMPILE_FLAGS([-Werror -floop-parallelize-all])
+AX_APPEND_COMPILE_FLAGS([-Werror -fstack-protector-all])
+AX_APPEND_COMPILE_FLAGS([-Werror -ggdb])