-AX_APPEND_COMPILE_FLAGS([-Werror -Wall])
-AX_APPEND_COMPILE_FLAGS([-Werror -Wextra])
-AX_APPEND_COMPILE_FLAGS([-Werror -fstack-protector-all])
-AX_APPEND_COMPILE_FLAGS([-Werror -ggdb])
-AX_APPEND_COMPILE_FLAGS([-Werror -floop-parallelize-all])
-AX_APPEND_COMPILE_FLAGS([-Werror -Wsign-compare])
-AX_APPEND_COMPILE_FLAGS([-Werror -Wmaybe-uninitialized])
-AX_APPEND_COMPILE_FLAGS([-Werror -Wunused-variable])
-AX_APPEND_COMPILE_FLAGS([-Werror -Wsign-compare])