+# warn if the format string is not a string literal
+#CFLAGS += -Wformat-nonliteral
+# do not warn about zero-length formats.
+CFLAGS += -Wno-format-zero-length
+# missing prototypes
+CFLAGS += -Wmissing-prototypes
+# warn about functions without format attribute that should have one
+CFLAGS += -Wmissing-format-attribute
+