diff -Naurp YubiPAM-1.0.4/src/pam_yubikey.c YubiPAM-1.0.4.dlucio/src/pam_yubikey.c
--- YubiPAM-1.0.4/src/pam_yubikey.c	2008-09-25 03:41:45.000000000 -0500
+++ YubiPAM-1.0.4.dlucio/src/pam_yubikey.c	2012-09-22 17:34:09.557894819 -0500
@@ -37,6 +37,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
+#include <sys/resource.h>
 
 #include "libyubipam.h"
 
diff -Naurp YubiPAM-1.0.4/src/utils/ykvalidate.c YubiPAM-1.0.4.dlucio/src/utils/ykvalidate.c
--- YubiPAM-1.0.4/src/utils/ykvalidate.c	2008-09-23 02:35:43.000000000 -0500
+++ YubiPAM-1.0.4.dlucio/src/utils/ykvalidate.c	2012-09-22 17:33:57.781042049 -0500
@@ -31,6 +31,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/resource.h>
 
 #include "ykvalidate.h"
 #include "libyubipam.h"