From ac41c318da6068e7f5247f09b341d50dec642c52 Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Wed, 8 Dec 2021 20:22:00 +0100
Subject: [PATCH] Fixes compilation of opencl CPR without MPI

---
 opm/simulators/linalg/bda/CPR.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/opm/simulators/linalg/bda/CPR.cpp b/opm/simulators/linalg/bda/CPR.cpp
index c8049fa09..2ec51bba4 100644
--- a/opm/simulators/linalg/bda/CPR.cpp
+++ b/opm/simulators/linalg/bda/CPR.cpp
@@ -238,7 +238,11 @@ void CPR<block_size>::create_preconditioner_amg(BlockedMatrix *mat_) {
             }
         }
 
+#if HAVE_MPI
         using Communication = Dune::OwnerOverlapCopyCommunication<int, int>;
+#else
+	using Communication = Dune::Amg::SequentialInformation;
+#endif
         using OverlapFlags = Dune::NegateSet<Communication::OwnerSet>;
         if (recalculate_aggregates) {
             dune_coarse = std::make_unique<DuneMat>(Nb, Nb, nnzb, DuneMat::row_wise);