--- WINGs/usleep.c.orig	Wed Oct 21 14:43:55 1998
+++ WINGs/usleep.c	Mon Oct 26 19:27:37 1998
@@ -11,6 +11,8 @@
 # include <sys/types.h>
 #endif
 
+#include <unistd.h>
+#include <string.h>
 
 #if defined(HAVE_SELECT)