header missing

devs;

package dev-vcs/rcs-5.8 requires the inclusion of an inclusion line.
Here is the diff patch I made for the gentoo ebuild


diff -ur rcs-5.8.orig//src/rcsgen.c rcs-5.8//src/rcsgen.c
--- rcs-5.8.orig//src/rcsgen.c  2011-10-12 20:16:19.778747358 +0800
+++ rcs-5.8//src/rcsgen.c       2011-10-12 20:17:42.551747372 +0800
@@ -33,6 +33,7 @@
 #include "b-esds.h"
 #include "b-fb.h"
 #include "b-fro.h"
+#include "b-feph.h"
 #include "b-kwxout.h"

 enum stringwork

explains all.
Without it results in a function not being found contained in the file
rcsgen.c