Index: uspace/lib/c/include/sys/time.h
===================================================================
--- uspace/lib/c/include/sys/time.h	(revision 3ebba9a734c61576f5558c6d86b7083e3d2d52b9)
+++ uspace/lib/c/include/sys/time.h	(revision a29529b94721f1f6d73bfa8b2239295a3db8052e)
@@ -62,4 +62,6 @@
 extern int gettimeofday(struct timeval *tv, struct timezone *tz);
 
+extern void udelay(useconds_t);
+
 #endif