--- modules/pam_unix/pam_unix_acct.c.orig	2012-07-09 15:01:11.592269364 +0200
+++ modules/pam_unix/pam_unix_acct.c	2012-07-09 15:01:54.615228076 +0200
@@ -47,6 +47,7 @@
 #include <time.h>		/* for time() */
 #include <errno.h>
 #include <sys/wait.h>
+#include <sys/resource.h>	/* for RLIMIT_NOFILE */
 
 #include <security/_pam_macros.h>