$NetBSD$

--- lib/os.h.orig	2009-07-20 19:29:42 +0300
+++ lib/os.h	2009-07-20 19:30:15 +0300
@@ -847,6 +847,8 @@ ___END_C_LINKAGE
 #define INCLUDE_pty_h
 #undef INCLUDE_util_h
 #define INCLUDE_util_h
+#undef INCLUDE_libutil_h
+#define INCLUDE_libutil_h
 #endif
 
 #ifdef USE_tcgetattr
