Make cpp emit a warning whenever entitypointer.hh is included

Just to increase the pressure towards its complete removal.

Make cpp emit a warning whenever entitypointer.hh is included
3d0a4938 · Oliver Sander · b40dfded · 3d0a4938
Commit 3d0a4938 authored 8 years ago by Oliver Sander
--- a/dune/grid/common/entitypointer.hh
+++ b/dune/grid/common/entitypointer.hh
@@ -3,6 +3,8 @@
 #ifndef DUNE_GRID_ENTITYPOINTER_HH
 #define DUNE_GRID_ENTITYPOINTER_HH

+#warning EntityPointer is deprecated and will be removed before the release of dune-grid-2.6. Instead, you can copy and store entities directly now. Note, this might lead to a decreased performance until all grid implementations properly addressed this interface change.
+
 #include <utility>

 #include <dune/common/proxymemberaccess.hh>