--- gnuchess-5.07/src/common.h.orig	2005-07-26 21:20:24.503844904 +0200
+++ gnuchess-5.07/src/common.h	2005-07-26 21:21:01.081284288 +0200
@@ -716,7 +716,6 @@
 
 /* Input thread and thread function */
 #include <pthread.h>
-extern pthread_t input_thread;
 void *input_func(void *);
 
 /*