From df687e5abf4da44933f00b121356817f1c85bd6c Mon Sep 17 00:00:00 2001
From: Fan Jiang <i@fanjiang.me>
Date: Fri, 19 Jun 2020 10:40:07 -0400
Subject: [PATCH] Fix MSVC build

---
 gtsam/base/types.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gtsam/base/types.h b/gtsam/base/types.h
index c5dac9ab7..857de00c9 100644
--- a/gtsam/base/types.h
+++ b/gtsam/base/types.h
@@ -28,6 +28,7 @@
 #include <cstdint>
 
 #include <exception>
+#include <string>
 
 #ifdef GTSAM_USE_TBB
 #include <tbb/scalable_allocator.h>