Index: ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp
===================================================================
diff -u -r8d80f35bf88694bd50d769b9bab31db8364a9004 -rb39d7f18a4f5f23a76b7fb484c13bffd225ef466
--- ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp	(.../buzzer.cpp)	(revision 8d80f35bf88694bd50d769b9bab31db8364a9004)
+++ ADuCM360_demo_cn0359/src/hal/drivers/buzzer.cpp	(.../buzzer.cpp)	(revision b39d7f18a4f5f23a76b7fb484c13bffd225ef466)
@@ -37,6 +37,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  ******************************************************************************/
 
+#ifdef EVAL_BUILD
 #include <ADuCM360.h>
 #include <hal/timer.h>
 #include <list>
@@ -82,6 +83,8 @@
 		delete_timer(t);
 		GP2SET_SET2_BBA = 0x1; //stop
 	}
+
+	return 0;
 }
 
 void _beep(int time, ...)
@@ -107,3 +110,5 @@
 
 	beep_loop(0, nullptr); //start
 }
+
+#endif // EVAL_BUILD