-#define CL_C (1 << 0) /* Only C. */
-#define CL_OBJC (1 << 1) /* Only ObjC. */
-#define CL_CXX (1 << 2) /* Only C++. */
-#define CL_OBJCXX (1 << 3) /* Only ObjC++. */
-#define CL_JOINED (1 << 4) /* If takes joined argument. */
-#define CL_SEPARATE (1 << 5) /* If takes a separate argument. */
-#define CL_REJECT_NEGATIVE (1 << 6) /* Reject no- form. */
+#define CL_JOINED (1 << 24) /* If takes joined argument. */
+#define CL_SEPARATE (1 << 25) /* If takes a separate argument. */
+#define CL_REJECT_NEGATIVE (1 << 26) /* Reject no- form. */
+#define CL_MISSING_OK (1 << 27) /* Missing argument OK (joined). */
+#define CL_UINTEGER (1 << 28) /* Argument is an integer >=0. */
+#define CL_COMMON (1 << 29) /* Language-independent. */
+#define CL_UNDOCUMENTED (1 << 30) /* Do not output with --help. */
+
+/* Input file names. */
+
+extern const char **in_fnames;
+
+/* The count of input filenames. */
+
+extern unsigned num_in_fnames;