os/signal: do not build on Plan 9

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5503057

diff --git a/src/pkg/os/signal/signal.go b/src/pkg/os/signal/signal.go
index 520f3f8a9ea49c4a1543dd1cac7d05568eb1e7e2..bbf9d17289f9e680953f61c5ab2fd4a795ccca2e 100644 (file)
--- a/src/pkg/os/signal/signal.go
+++ b/src/pkg/os/signal/signal.go
@@ -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 darwin freebsd linux netbsd openbsd windows
+
 // Package signal implements operating system-independent signal handling.
 package signal
 

diff --git a/src/pkg/os/signal/signal_test.go b/src/pkg/os/signal/signal_test.go
index 00eb29578f970bc212534f2117d87b4333154faa..8445a7846037ce6d4712e8790bde165b1a640ff4 100644 (file)
--- a/src/pkg/os/signal/signal_test.go
+++ b/src/pkg/os/signal/signal_test.go
@@ -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 darwin freebsd linux netbsd openbsd windows
+
 package signal
 
 import (