Index: ADuCM360_demo_cn0359/include/hal/drivers/buzzer.h
===================================================================
diff -u -r8d80f35bf88694bd50d769b9bab31db8364a9004 -rb39d7f18a4f5f23a76b7fb484c13bffd225ef466
--- ADuCM360_demo_cn0359/include/hal/drivers/buzzer.h	(.../buzzer.h)	(revision 8d80f35bf88694bd50d769b9bab31db8364a9004)
+++ ADuCM360_demo_cn0359/include/hal/drivers/buzzer.h	(.../buzzer.h)	(revision b39d7f18a4f5f23a76b7fb484c13bffd225ef466)
@@ -37,6 +37,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  ******************************************************************************/
 
+#ifdef EVAL_BUILD
 #ifndef __BUZZER_H__
 #define __BUZZER_H__
 
@@ -46,4 +47,6 @@
 
 #define beep(args...) _beep(args, -1)
 
-#endif
+#endif // __BUZZER_H__
+#endif // EVAL_BUILD
+