grid selector

cmake/modules/DuneAlugridMacros.cmake

@@ -7,19 +7,24 @@ set(DUNE_ALUGRID_LIBRARY "${PROJECT_BINARY_DIR}/lib/libdunealugrid.a"
   CACHE FILEPATH "path to local libs in dune-alugrid" )
 mark_as_advanced(DUNE_ALUGRID_LIBRARY)
 
+include(GridSelector)
+initialize_grid_selector()
+set(GRIDS "")
 
 
 #define available alugrid types
-dune_define_alugridtype(GRID_CONFIG_H_BOTTOM GRIDTYPE ALUGRID_CONFORM
+dune_define_alugridtype(GRIDS GRIDTYPE ALUGRID_CONFORM
     DUNETYPE "Dune::ALUGrid< dimgrid, dimworld, simplex, conforming >"
     HEADERS dune/alugrid/grid.hh dune/alugrid/dgf.hh)
-dune_define_alugridtype(GRID_CONFIG_H_BOTTOM GRIDTYPE ALUGRID_CUBE
+dune_define_alugridtype(GRIDS GRIDTYPE ALUGRID_CUBE
     DUNETYPE "Dune::ALUGrid< dimgrid, dimworld, cube, nonconforming >"
     HEADERS dune/alugrid/grid.hh dune/alugrid/dgf.hh)
-dune_define_alugridtype(GRID_CONFIG_H_BOTTOM GRIDTYPE ALUGRID_SIMPLEX
+dune_define_alugridtype(GRIDS GRIDTYPE ALUGRID_SIMPLEX
     DUNETYPE "Dune::ALUGrid< dimgrid, dimworld, simplex, nonconforming >"
     HEADERS dune/alugrid/grid.hh dune/alugrid/dgf.hh)
 
+finalize_grid_selector( GRIDS )
+
 # avoid conflicts with normal ALUGrid
 if( ALUGRID_CPPFLAGS )
   message(ERROR "--with-alugrid conflicts with dune-alugrid module,

cmake/modules/GridSelector.cmake

+# check whether the user wants to overload compile flags upon calling make
+#
+# Provides the following macros:
+#
+#   initialize_compiler_script() : needs to be called before further flags are added to CMAKE_CXX_FLAGS
+#   finalize_compiler_script()   : needs to be called at the end of the cmake macros, e.g. in finalize_dune_project
+#
+#   By default this feature is disabled. Use -DALLOW_CXXFLAGS_OVERWRITE=ON to activate.
+#   Then the following is possible:
+#
+#   make CXXFLAGS="your flags" GRIDTYPE="grid type"
+#
+#   GRIDTYPE can be anything defined in config.h via the dune_define_gridtype macro from dune-grid.
+#   Furthermore any CPP variable of the form -DVAR=VALUE can be overloaded on the command line.
+#
+#   Note: If you don't know what this is or what it's good for, don't use it.
+#
+option(GRID_SELECTOR OFF)
+
+set(GRID_SELECTOR_FILE "")
+# init compiler script and store CXX flags
+macro(initialize_grid_selector)
+  if(GRID_SELECTOR)
+    set(GRID_SELECTOR_FILE ${CMAKE_BINARY_DIR}/gridselector.hh)
+    file(write ${GRID_SELECTOR_FILE} "// Autogenerated Grid selectors")
+  endif()
+endmacro()
+
+# init compiler script and store CXX flags
+macro(finalize_grid_selector output)
+  if(GRID_SELECTOR)
+    file(append ${GRID_SELECTOR_FILE} ${output})
+  endif()
+endmacro()
+