https://bugs.gentoo.org/947850

--- a/rp2gen/crout.c
+++ b/rp2gen/crout.c
@@ -96,7 +96,7 @@ extern rp2_bool testing;
 extern rp2_bool cplusplus;
 extern rp2_bool neterrors; /* exchange OS independent errors */
 extern struct subsystem subsystem;
-extern unsigned versionnumber; /* used to check version */
+extern time_t versionnumber; /* used to check version */
 extern ENTRY *find();
 
 enum