From 7611a69ab1dbf9ffd4ad7a5f2295220f3d6a9829 Mon Sep 17 00:00:00 2001
From: MarsZhang <6671605@è5@qq.com>
Date: Tue, 27 Apr 2021 03:59:53 +0000
Subject: [PATCH] Compatible with windows vs2017

---
 .bazelrc                       | 4 +++-
 source/utils/circular_buffer.h | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/.bazelrc b/.bazelrc
index 66e147c..b5e0104 100644
--- a/.bazelrc
+++ b/.bazelrc
@@ -1,3 +1,5 @@
-build --cxxopt=-std=c++17
+build --enable_platform_specific_config
+build:linux --cxxopt=-std=c++17
+build:windows --cxxopt=-std:c++17
 
 try-import %workspace%/user.bazelrc
diff --git a/source/utils/circular_buffer.h b/source/utils/circular_buffer.h
index 7addc7e..94aded4 100644
--- a/source/utils/circular_buffer.h
+++ b/source/utils/circular_buffer.h
@@ -16,6 +16,7 @@
 
 #include <deque>
 #include <mutex>
+#include <optional>
 
 namespace cpp2sky {