From 0d7d159203ad5fa436b755ddd0133afd5668e0a1 Mon Sep 17 00:00:00 2001
From: Varun Agrawal <varagrawal@gmail.com>
Date: Mon, 26 Feb 2024 09:14:39 -0500
Subject: [PATCH] fix for boost serialization collision

---
 gtsam/base/std_optional_serialization.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gtsam/base/std_optional_serialization.h b/gtsam/base/std_optional_serialization.h
index 5c250eab4..079cb7745 100644
--- a/gtsam/base/std_optional_serialization.h
+++ b/gtsam/base/std_optional_serialization.h
@@ -56,6 +56,7 @@ namespace std { template<> struct is_trivially_move_constructible<boost::seriali
 #endif
 
 
+#if __cplusplus < 201703L
 // function specializations must be defined in the appropriate
 // namespace - boost::serialization
 namespace boost {
@@ -99,3 +100,4 @@ void serialize(Archive& ar, std::optional<T>& t, const unsigned int version) {
 }  // namespace serialization
 }  // namespace boost
 #endif
+#endif