From 6cef675e6eaeaf89f2462e8cfec4a4a9a497fac8 Mon Sep 17 00:00:00 2001
From: Aleksei Evlampev <a.evlampev@innopolis.ru>
Date: Thu, 8 Apr 2021 14:54:52 +0300
Subject: [PATCH] return back including boost version.hpp header

---
 gtsam/linear/SubgraphBuilder.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gtsam/linear/SubgraphBuilder.h b/gtsam/linear/SubgraphBuilder.h
index 5247ea2a2..84a477a5e 100644
--- a/gtsam/linear/SubgraphBuilder.h
+++ b/gtsam/linear/SubgraphBuilder.h
@@ -21,6 +21,7 @@
 #include <gtsam/base/types.h>
 #include <gtsam/dllexport.h>
 
+#include <boost/serialization/version.hpp>
 #include <boost/serialization/nvp.hpp>
 #include <boost/shared_ptr.hpp>