--- ruby-1.9.1-p376/ext/dbm/dbm.c.ark	2010-04-16 19:13:17.384290624 +0200
+++ ruby-1.9.1-p376/ext/dbm/dbm.c	2010-04-16 19:14:41.533051697 +0200
@@ -17,6 +17,8 @@
 #ifdef HAVE_SYS_CDEFS_H
 # include <sys/cdefs.h>
 #endif
+#define DB_DBM_HSEARCH 1
+#define HAVE_DBM 1
 #include DBM_HDR
 #include <fcntl.h>
 #include <errno.h>