--- dolfin/la/EigenLUSolver.h.orig	2018-07-31 23:33:10.000000000 -0700
+++ dolfin/la/EigenLUSolver.h	2018-07-31 23:45:53.000000000 -0700
@@ -83,9 +83,10 @@
     std::string parameter_type() const
     { return "lu_solver"; }

+    class EigenLUImplBase;
+
   private:
     // Eigen LU implementation class
-    class EigenLUImplBase;
     std::unique_ptr<EigenLUImplBase> _impl;

     // Available LU solvers and descriptions