From c6f5dc0f1b2b2f2ac6a1329f1fab0c651acbd6ac Mon Sep 17 00:00:00 2001
From: Jinhao <cnjinhao@hotmail.com>
Date: Sat, 11 Aug 2018 09:12:57 +0800
Subject: [PATCH] fix compiler error in Visual C++2013

---
 include/nana/system/timepiece.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/nana/system/timepiece.hpp b/include/nana/system/timepiece.hpp
index 248a798e..443a4a0e 100644
--- a/include/nana/system/timepiece.hpp
+++ b/include/nana/system/timepiece.hpp
@@ -13,6 +13,8 @@
 #ifndef NANA_SYSTEM_TIMEPIECE_HPP
 #define NANA_SYSTEM_TIMEPIECE_HPP
 
+#include "../c++defines.hpp"
+
 namespace nana
 {
 namespace system