1 files changed, 19 insertions, 0 deletions
diff --git a/src/net/conf_netcgo.go b/src/net/conf_netcgo.go
new file mode 100644
index 0000000..8f387eb
--- /dev/null
+++ b/src/net/conf_netcgo.go
@@ -0,0 +1,19 @@
+// 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.
+
+//go:build netcgo
+// +build netcgo
+
+package net
+
+/*
+
+// Fail if cgo isn't available.
+
+*/
+import "C"
+
+// The build tag "netcgo" forces use of the cgo DNS resolver.
+// It is the opposite of "netgo".
+func init() { netCgo = true }