--- input_layer.h.orig	2009-11-10 02:16:59.000000000 +0300
+++ input_layer.h	2013-05-30 13:06:33.343465325 +0400
@@ -32,4 +32,8 @@
 /* Open a single input layer device file for input. */
 extern int open_inputfile(const char *filename);
 
+#ifndef KEY_MICMUTE
+#define KEY_MICMUTE		248
+#endif
+
 #endif /* INPUT_LAYER_H__ */

.