--- util-linux/mount/pivot_root.c	2001-11-09 16:49:57.000000000 +0000
+++ util-linux/mount/pivot_root.c.2	2004-01-25 15:05:58.000000000 +0000
@@ -4,6 +4,7 @@
 
 
 #include <stdio.h>
+#include <errno.h>
 
 #ifdef __ia64__
 # include <sys/syscall.h>