diff -urN ../tmp-orig/amsynth-1.1.0/src/Thread.h ./src/Thread.h
--- ../tmp-orig/amsynth-1.1.0/src/Thread.h	2005-10-26 19:45:10.000000000 +0000
+++ ./src/Thread.h	2005-11-02 10:31:44.000000000 +0000
@@ -26,6 +26,7 @@
 #define _THREAD_H
 
 #include <pthread.h>
+#include <signal.h>
 
 class Thread
 {