--- Linux-PAM-1.1.4/modules/pam_unix/support.c.yp_const~	2011-07-19 14:31:36.081046306 +0200
+++ Linux-PAM-1.1.4/modules/pam_unix/support.c	2011-07-19 14:31:38.058067705 +0200
@@ -21,6 +21,8 @@
 #include <sys/resource.h>
 #ifdef HAVE_RPCSVC_YPCLNT_H
 #include <rpcsvc/ypclnt.h>
+#else
+#define YPERR_SUCCESS 0
 #endif
 
 #include <security/_pam_macros.h>