From 22e14228e2a8c495c979e725aff1947b6d6b72a1 Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@gmail.com>
Date: Sat, 4 Feb 2023 13:35:24 -0800
Subject: [PATCH] Fix filesystem issue on gcc7

---
 gtsam/slam/dataset.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gtsam/slam/dataset.cpp b/gtsam/slam/dataset.cpp
index 218b1afcd..6ef0692c1 100644
--- a/gtsam/slam/dataset.cpp
+++ b/gtsam/slam/dataset.cpp
@@ -47,8 +47,11 @@
 #include <fstream>
 #include <iostream>
 #include <stdexcept>
+#if defined(__GNUC__) && (__GNUC__ == 7)
+#include <experimental/filesystem>
+#else
 #include <filesystem>
-
+#endif
 using namespace std;
 namespace fs = std::filesystem;
 using gtsam::symbol_shorthand::L;