diff -ur sdcc.orig/sim/ucsim/cmd.src/cmdlex.cc sdcc/sim/ucsim/cmd.src/cmdlex.cc
--- sdcc.orig/sim/ucsim/cmd.src/cmdlex.cc	2004-07-16 19:32:30.000000000 +0300
+++ sdcc/sim/ucsim/cmd.src/cmdlex.cc	2009-08-10 11:09:58.000000000 +0300
@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 #line 2 "cmdlex.cc"
 
 #line 4 "cmdlex.cc"