From 4cb527caddf649287f288e95e1aecf4596a2264f Mon Sep 17 00:00:00 2001
From: Stephan Schulz <stephan.schulz-x2q@rub.de>
Date: Wed, 3 Jul 2019 17:06:16 +0200
Subject: [PATCH] set CMake policy regarding leading/trailing whitespace

Appears with
   OpenMPI 1.10.4
   cmake 3.4.1
---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef39662..68a9d62 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,10 @@ option(CM_ALL_VTK_OUTPUT "VTK output routine" OFF)
 option(CM_ALL_VORONOI "Voronoi-based loadbalancing scheme (requires Voro++)" OFF)
 option(CM_ALL_FORTRAN "VTK output routine" OFF)
 
+# leading and trailing whitespace should be silently ignored
+# thanks to an old FindMPI script
+cmake_policy(SET CMP0004 OLD)
+
 enable_language(CXX)
 
 if (CM_ALL_FORTRAN)
-- 
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