From ae1de4b270d31d1972c3b72d9a7da486a6f4faaa Mon Sep 17 00:00:00 2001
From: Matthieu Schaller <schaller@strw.leidenuniv.nl>
Date: Tue, 11 Sep 2018 15:12:57 +0200
Subject: [PATCH] Only register MPI types when compiling with MPI...

---
 src/proxy.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/proxy.c b/src/proxy.c
index 94f0f7f5c9..1a395045bf 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -42,8 +42,10 @@
 #include "error.h"
 #include "space.h"
 
+#ifdef WITH_MPI
 /* MPI data type for the communications */
 MPI_Datatype pcell_mpi_type;
+#endif
 
 /**
  * @brief Exchange tags between nodes.
-- 
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