From 892e4759df463d0439a44d4997fd277331cfb7d7 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Thu, 1 Aug 2019 07:02:55 -0400
Subject: [PATCH] protect Spectrum MPI detection from failing to compile with
 MPI libraries implementing MPI version 2 or 1

---
 src/KOKKOS/kokkos.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/KOKKOS/kokkos.cpp b/src/KOKKOS/kokkos.cpp
index a353c3dd18..dd0aca2a9f 100644
--- a/src/KOKKOS/kokkos.cpp
+++ b/src/KOKKOS/kokkos.cpp
@@ -208,6 +208,7 @@ KokkosLMP::KokkosLMP(LAMMPS *lmp, int narg, char **arg) : Pointers(lmp)
   MPI_Comm_size(world,&nmpi);
   if (nmpi > 0) {
 
+#if defined(MPI_VERSION) && (MPI_VERSION > 2)
     // Check for IBM Spectrum MPI
 
     int len;
@@ -226,6 +227,7 @@ KokkosLMP::KokkosLMP(LAMMPS *lmp, int narg, char **arg) : Pointers(lmp)
         if (me == 0)
           error->warning(FLERR,"The Spectrum MPI '-gpu' flag is not set. Disabling CUDA-aware MPI");
     }
+#endif
 
     if (cuda_aware_flag == 1 && have_cuda_aware == 0) {
       if (me == 0)