diff --git a/dep.h b/dep.h
index 6f05eb45..aaad7894 100644
--- a/dep.h
+++ b/dep.h
@@ -52,3 +52,18 @@ extern struct nameseq *ar_glob ();
 /* Buggy compiler can't hack this.  */
 extern char *dep_name ();
 #endif
+
+extern struct dep *read_all_makefiles ();
+
+/* Flag bits for the second argument to `read_makefile'.
+   These flags are saved in the `changed' field of each
+   `struct dep' in the chain returned by `read_all_makefiles'.  */
+enum
+  {
+    RM_NO_DEFAULT_GOAL	= 1 << 0, /* Do not set default goal.  */
+    RM_INCLUDED		= 1 << 1, /* Search the makefile search path.  */
+    RM_DONTCARE		= 1 << 2, /* No error if it doesn't exist.  */
+    RM_NO_TILDE		= 1 << 3, /* Don't expand ~ in the file name.  */
+    RM_NOFLAG		= 0
+  };
+