From 4e295b91f22c1235dc7c9f85585e07a4e02ac043 Mon Sep 17 00:00:00 2001
From: Varun Agrawal <varagrawal@gmail.com>
Date: Thu, 26 Aug 2021 11:18:58 -0400
Subject: [PATCH] add appropriate guards for metis

---
 gtsam/inference/Ordering.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gtsam/inference/Ordering.cpp b/gtsam/inference/Ordering.cpp
index 266c54ca61..440d2b8285 100644
--- a/gtsam/inference/Ordering.cpp
+++ b/gtsam/inference/Ordering.cpp
@@ -25,8 +25,12 @@
 #include <gtsam/3rdparty/CCOLAMD/Include/ccolamd.h>
 
 #ifdef GTSAM_SUPPORT_NESTED_DISSECTION
+#ifdef GTSAM_USE_SYSTEM_METIS
+#include <metis.h>
+#else
 #include <gtsam/3rdparty/metis/include/metis.h>
 #endif
+#endif
 
 using namespace std;