+++ src/noux-pkg/openssh/includes.h
@@ -18,7 +18,8 @@
 
 #include "config.h"
 
-#define _GNU_SOURCE /* activate extra prototypes for glibc */
+/* already defined by noux.mk */
+//#define _GNU_SOURCE /* activate extra prototypes for glibc */
 
 #include <sys/types.h>
 #include <sys/socket.h> /* For CMSG_* */
