diff --git a/scripts/genksyms/genksyms.h b/scripts/genksyms/genksyms.h
index 2668287..2831158 100644
--- a/scripts/genksyms/genksyms.h
+++ b/scripts/genksyms/genksyms.h
@@ -29,6 +29,10 @@
 	SYM_NORMAL, SYM_TYPEDEF, SYM_ENUM, SYM_STRUCT, SYM_UNION
 };
 
+enum symbol_status {
+	STATUS_UNCHANGED, STATUS_DEFINED, STATUS_MODIFIED
+};
+
 struct string_list {
 	struct string_list *next;
 	enum symbol_type tag;
@@ -43,6 +47,8 @@
 	struct symbol *expansion_trail;
 	struct symbol *visited;
 	int is_extern;
+	int is_declared;
+	enum symbol_status status;
 };
 
 typedef struct string_list **yystype;