From 94253e8b833f5e3b5d3f6a3298614103298f724b Mon Sep 17 00:00:00 2001
From: Tomoaki Teshima <tomoaki.teshima@gmail.com>
Date: Tue, 13 Feb 2018 18:30:02 +0900
Subject: [PATCH] fix build error on Visual Studio 2013 and earlier

---
 modules/core/src/persistence.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/core/src/persistence.hpp b/modules/core/src/persistence.hpp
index 3f5a09230f..1149386278 100644
--- a/modules/core/src/persistence.hpp
+++ b/modules/core/src/persistence.hpp
@@ -12,6 +12,9 @@
 #include <sstream>
 #include <string>
 #include <iterator>
+#ifdef _MSC_VER
+#include <cstdint>
+#endif // _MSC_VER
 
 #define USE_ZLIB 1
 #if USE_ZLIB