From 753903f3f4f8ab65b503df445951e756a73d70f6 Mon Sep 17 00:00:00 2001
From: Tudor Bosman <tudorb@fb.com>
Date: Fri, 21 Jun 2013 09:18:37 -0700
Subject: [PATCH] add Chrono.h to patch around a gcc 4.6 issue

Test Plan: used it

Reviewed By: soren@fb.com

FB internal diff: D859244
---
 folly/Chrono.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 folly/Chrono.h

diff --git a/folly/Chrono.h b/folly/Chrono.h
new file mode 100644
index 00000000..6465098b
--- /dev/null
+++ b/folly/Chrono.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2013 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Wrapper around <chrono> that hides away some gcc 4.6 issues
+#ifndef FOLLY_CHRONO_H_
+#define FOLLY_CHRONO_H_
+
+#include <chrono>
+#include "folly/Portability.h"
+
+// gcc 4.6 uses an obsolete name for steady_clock, although the implementation
+// is the same
+#if __GNUC_PREREQ(4, 6) && !__GNUC_PREREQ(4, 7)
+namespace std { namespace chrono {
+typedef monotonic_clock steady_clock;
+}}  // namespaces
+#endif
+
+#endif /* FOLLY_CHRONO_H_ */
+
-- 
2.34.1