diff --git a/configure b/configure
index 5024860ca4395a..6cdd0856ce5588 100755
--- a/configure
+++ b/configure
@@ -3303,6 +3303,9 @@ then
 	*-*-cygwin*)
 		ac_sys_system=Cygwin
 		;;
+	*-*-gnu)
+		ac_sys_system=GNU
+		;;
 	*-*-vxworks*)
 	    ac_sys_system=VxWorks
 	    ;;
diff --git a/configure.ac b/configure.ac
index 5a3e340aa3e72b..b03f3ec7043520 100644
--- a/configure.ac
+++ b/configure.ac
@@ -391,6 +391,9 @@ then
 	*-*-cygwin*)
 		ac_sys_system=Cygwin
 		;;
+	*-*-gnu)
+		ac_sys_system=GNU
+		;;
 	*-*-vxworks*)
 	    ac_sys_system=VxWorks
 	    ;;