--- a/targets/Linux/plc_Linux_main.c	Mon Mar 04 12:22:49 2013 +0900
+++ b/targets/Linux/plc_Linux_main.c	Mon Mar 04 17:49:12 2013 +0900
@@ -18,6 +18,10 @@
 {
     return __sync_val_compare_and_swap(atomicvar, compared, exchange);
 }
+long long AtomicCompareExchange64(long long* atomicvar, long long compared, long long exchange)
+{
+    return __sync_val_compare_and_swap(atomicvar, compared, exchange);
+}
 
 void PLC_GetTime(IEC_TIME *CURRENT_TIME)
 {