From: Denis Davydov <davydden@gmail.com>
Date: Sun, 17 Jan 2016 09:51:21 +0000 (+0100)
Subject: allow oevrriding MPIEXEC from an environment varible
X-Git-Tag: v8.4.0-rc2~89^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac2398fa0d00e03ae80fef1492ae75eb1aff2ba8;p=dealii.git

allow oevrriding MPIEXEC from an environment varible
---

diff --git a/cmake/modules/FindMPI.cmake b/cmake/modules/FindMPI.cmake
index 4e45a53bd8..2f781eb1b8 100644
--- a/cmake/modules/FindMPI.cmake
+++ b/cmake/modules/FindMPI.cmake
@@ -64,6 +64,12 @@ ENDIF()
 # Call the system FindMPI.cmake module:
 #
 
+# in case MPIEXEC is specified first call find_program() so that in case of success 
+# its subsequent runs inside FIND_PACKAGE(MPI) do not alter the desired result.
+IF(DEFINED ENV{MPIEXEC})
+  FIND_PROGRAM(MPIEXEC $ENV{MPIEXEC})
+ENDIF()
+
 # temporarily disable ${CMAKE_SOURCE_DIR}/cmake/modules for module lookup
 LIST(REMOVE_ITEM CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules/)
 FIND_PACKAGE(MPI)