From e3f3f940a09ee99e952be43fd3b19c969cf229d0 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Wed, 27 Jan 2016 15:58:52 -0500
Subject: [PATCH] runtime/cgo: add cgo build tag to C files

This makes "CGO_ENABLED=0 go list runtime/cgo" work,
which fixes the current cmd/go test failure.

Change-Id: Ia55ce3ba1dbb09f618ae5f4c8547722670360f59
Reviewed-on: https://go-review.googlesource.com/19001
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
---
 src/runtime/cgo/gcc_darwin_amd64.c | 2 ++
 src/runtime/cgo/gcc_libinit.c      | 1 +
 src/runtime/cgo/gcc_setenv.c       | 1 +
 src/runtime/cgo/gcc_util.c         | 2 ++
 4 files changed, 6 insertions(+)

diff --git a/src/runtime/cgo/gcc_darwin_amd64.c b/src/runtime/cgo/gcc_darwin_amd64.c
index dc679acab9d..b70c83345f5 100644
--- a/src/runtime/cgo/gcc_darwin_amd64.c
+++ b/src/runtime/cgo/gcc_darwin_amd64.c
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build cgo
+
 #include <string.h> /* for strerror */
 #include <pthread.h>
 #include <signal.h>
diff --git a/src/runtime/cgo/gcc_libinit.c b/src/runtime/cgo/gcc_libinit.c
index c3e94f58d2c..5b9558aabc8 100644
--- a/src/runtime/cgo/gcc_libinit.c
+++ b/src/runtime/cgo/gcc_libinit.c
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build cgo
 // +build darwin dragonfly freebsd linux netbsd solaris
 // +build !ppc64,!ppc64le
 
diff --git a/src/runtime/cgo/gcc_setenv.c b/src/runtime/cgo/gcc_setenv.c
index ca29dcb05f2..c976ac3d37c 100644
--- a/src/runtime/cgo/gcc_setenv.c
+++ b/src/runtime/cgo/gcc_setenv.c
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build cgo
 // +build darwin dragonfly freebsd linux netbsd openbsd solaris
 
 #include "libcgo.h"
diff --git a/src/runtime/cgo/gcc_util.c b/src/runtime/cgo/gcc_util.c
index 143734e94b0..d5efec396bd 100644
--- a/src/runtime/cgo/gcc_util.c
+++ b/src/runtime/cgo/gcc_util.c
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build cgo
+
 #include "libcgo.h"
 
 /* Stub for calling malloc from Go */