1 files changed, 17 insertions, 0 deletions
diff --git a/libgo/go/net/conf_netcgo.go b/libgo/go/net/conf_netcgo.go
new file mode 100644
index 00000000000..b66bae37106
--- /dev/null
+++ b/libgo/go/net/conf_netcgo.go
@@ -0,0 +1,17 @@
+// Copyright 2015 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build netcgo
+
+package net
+
+/*
+
+// Fail if cgo isn't available.
+
+*/
+
+// The build tag "netcgo" forces use of the cgo DNS resolver.
+// It is the opposite of "netgo".
+func init() { netCgo = true }