$OpenBSD$
--- neo/idlib/ParallelJobList_JobHeaders.h.orig	Mon Jul 21 18:04:12 2014
+++ neo/idlib/ParallelJobList_JobHeaders.h	Mon Jul 21 20:01:32 2014
@@ -62,7 +62,7 @@ If you have questions concerning this license or the a
 #include <signal.h>
 // RB end
 // Yamagi begin
-#elif defined(__FreeBSD__)
+#elif defined(__unix__)
 #include <signal.h>
 #endif
 // Yamagi end