$OpenBSD$
--- source/unix/unix_fs.c.orig	Sat Nov 19 22:32:38 2011
+++ source/unix/unix_fs.c	Tue Feb 26 03:26:05 2013
@@ -26,7 +26,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 #include <sys/stat.h>
 
 // Mac OS X and FreeBSD don't know the readdir64 and dirent64
-#if ( defined (__FreeBSD__) || !defined(_LARGEFILE64_SOURCE) )
+#if ( defined (__FreeBSD__) || defined (__OpenBSD__) || !defined(_LARGEFILE64_SOURCE) )
 #define readdir64 readdir
 #define dirent64 dirent
 #endif