diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0cc62c9ea8a..fe414641c34 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2008-03-05  Joel Sherrill <joel.sherrill@oarcorp.com>
+
+	* gthr-rtems.h: Implement __gthread_mutex_destroy.
+
 2008-03-05  Richard Guenther  <rguenther@suse.de>
 
 	PR c++/35336
diff --git a/gcc/gthr-rtems.h b/gcc/gthr-rtems.h
index 425d7dee0e9..e926d534c5e 100644
--- a/gcc/gthr-rtems.h
+++ b/gcc/gthr-rtems.h
@@ -62,6 +62,7 @@ extern int rtems_gxx_setspecific (__gthread_key_t key, const void *ptr);
 
 /* mutex support */
 extern void rtems_gxx_mutex_init (__gthread_mutex_t *mutex);
+extern int rtems_gxx_mutex_destroy (__gthread_mutex_t *mutex);
 extern int rtems_gxx_mutex_lock (__gthread_mutex_t *mutex);
 extern int rtems_gxx_mutex_trylock (__gthread_mutex_t *mutex);
 extern int rtems_gxx_mutex_unlock (__gthread_mutex_t *mutex);
@@ -111,9 +112,9 @@ __gthread_setspecific (__gthread_key_t key, const void *ptr)
 }
 
 static inline int
-__gthread_mutex_destroy (__gthread_mutex_t * UNUSED(mutex))
+__gthread_mutex_destroy (__gthread_mutex_t *mutex)
 {
-  return 0;
+  return rtems_gxx_mutex_destroy (mutex);
 }
 
 static inline int