From bbe72a81e471fac4d28eb83bdae7b2a5a8d8e9f6 Mon Sep 17 00:00:00 2001
From: RonRahaman <rahaman@cs.uchicago.edu>
Date: Mon, 27 Jul 2020 12:48:10 -0500
Subject: [PATCH] CMake test MPI with cache var instead of env var

---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a7b76560..a59e6f7e3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,8 +30,8 @@ option(dagmc    "Enable support for DAGMC (CAD) geometry"        OFF)
 #===============================================================================
 
 set(MPI_ENABLED FALSE)
-if($ENV{CXX} MATCHES "(mpi[^/]*|CC)$")
-  message(STATUS "Detected MPI wrapper: $ENV{CXX}")
+if(${CMAKE_CXX_COMPILER} MATCHES "(mpi[^/]*|CC)$")
+  message(STATUS "Detected MPI wrapper: ${CMAKE_CXX_COMPILER}")
   set(MPI_ENABLED TRUE)
 endif()