nginx-0.0.2-2004-02-26-20:10:01 import
diff --git a/src/os/unix/ngx_thread.h b/src/os/unix/ngx_thread.h
index 3ecc1e6..3961f32 100644
--- a/src/os/unix/ngx_thread.h
+++ b/src/os/unix/ngx_thread.h
@@ -60,6 +60,9 @@
 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m);
 
 
+extern ngx_int_t ngx_threaded;
+
+
 #else /* !NGX_THREADS */
 
 #define ngx_log_tid  0