--- a/stage4/stage4.hh	Sun Mar 16 10:16:25 2014 +0000
+++ b/stage4/stage4.hh	Sun Mar 16 13:02:28 2014 +0000
@@ -104,4 +104,8 @@
 
 int stage4(symbol_c *tree_root, const char *builddir);
 
+/* Functions to be implemented by each generate_XX version of stage 4 */
+int  stage4_parse_options(char *options);
+void stage4_print_options(void);
+
 #endif /* _STAGE4_HH */