From b64ca374c30bad2ad3fd9604fcb69e384edc4b36 Mon Sep 17 00:00:00 2001
From: Andreas Lauser <and@poware.org>
Date: Tue, 10 Apr 2018 11:02:18 +0200
Subject: [PATCH] make ebos compile with dune-fem being around for dune 2.6

dune 2.6 seems to expect a referenceElement(geo) free function.
---
 ebos/femcpgridcompat.hh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ebos/femcpgridcompat.hh b/ebos/femcpgridcompat.hh
index 1fc536748..8c6bd1d50 100644
--- a/ebos/femcpgridcompat.hh
+++ b/ebos/femcpgridcompat.hh
@@ -46,7 +46,13 @@ namespace Dune
 
     template <int codim>
     class EntityPointer;
+  }
 
+  template <int dim, int cdim>
+  auto referenceElement(const Dune::cpgrid::Geometry<dim, cdim>& geo)
+      -> decltype(referenceElement<double, dim>(geo.type()))
+  {
+      return referenceElement<double, dim>(geo.type());
   }
 
   // specialization of dune-fem compatiblity functions for CpGrid, since CpGrid does not use the interface classes.