--- a/src/core/log.h	Mon Apr 14 12:15:05 2008 -0700
+++ b/src/core/log.h	Mon Apr 14 12:21:24 2008 -0700
@@ -377,6 +377,7 @@
 #define LogComponentDisable(name,level)
 #define LogComponentEnableAll(level)
 #define LogComponentDisableAll(level)
+#define LogRegisterTimePrinter(printer)
 
 #endif /* LOG_ENABLE */
 

--- a/src/simulator/simulator.cc	Mon Apr 14 12:15:05 2008 -0700
+++ b/src/simulator/simulator.cc	Mon Apr 14 12:21:24 2008 -0700
@@ -411,11 +411,13 @@
   GetPriv ()->EnableLogTo (filename);
 }
 
+#ifdef NS3_LOG_ENABLE
 static void
 TimePrinter (std::ostream &os)
 {
   os << Simulator::Now ();
 }
+#endif /* NS3_LOG_ENABLE */
 
 Ptr<SimulatorPrivate>
 Simulator::GetPriv (void)