--- libgo/go/runtime/lock_futex.go.orig	2020-03-04 19:30:03.000000000 +1100
+++ libgo/go/runtime/lock_futex.go	2020-09-08 13:22:01.777200000 +1000
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build dragonfly freebsd linux
+// +build bsdsunix dragonfly freebsd linux
 
 package runtime