--- links-2.1pre2/bookmarks.c.64bit-fixes	2003-03-18 03:44:19.000000000 -0500
+++ links-2.1pre2/bookmarks.c	2003-03-18 04:25:28.000000000 -0500
@@ -3,6 +3,7 @@
  * This file is a part of the Links program, released under GPL.
  */
 
+#define _GNU_SOURCE 1 /* so that <unistd.h> defines get_current_dir_name() */
 #include <stdio.h>
 #include <string.h>