[!261] [cmake] Guard the grid analysis tool correctly

Merge branch 'feature/guard-grid-analysis' into 'master'

consistent-grid-orientation is merely a suggestion. dune-perftool should
perfectly build in its absence.

See merge request [dominic/dune-perftool!261]

  [dominic/dune-perftool!261]: gitlab.dune-project.org/dominic/dune-perftool/merge_requests/261

bin/analyzegrid/CMakeLists.txt

-add_executable(analyze_grid analyze_grid.cc)
-dune_symlink_to_source_files(FILES test_2d_structured.ini test_3d_structured.ini test_2d_unstructured.ini test_3d_unstructured.ini)
+if(consistent-edge-orientation_FOUND)
+  add_executable(analyze_grid analyze_grid.cc)
+  dune_symlink_to_source_files(FILES test_2d_structured.ini test_3d_structured.ini test_2d_unstructured.ini test_3d_unstructured.ini)
+endif()

cmake/modules/DunePerftoolMacros.cmake

@@ -119,6 +119,9 @@ function(add_generated_executable)
   set(ANALYZE_GRID_FILE)
   set(ANALYZE_GRID_OPTION)
   if(GEN_ANALYZE_GRID)
+    if(NOT consistent-edge-orientation_FOUND)
+      message(FATAL_ERROR "Asked for grid analysis, but the module consistent-edge-orientation was not found!")
+    endif()
     set(ANALYZE_GRID_FILE "${GEN_INIFILE}.csv")
     set(ANALYZE_GRID_OPTION "--grid-info=${ANALYZE_GRID_FILE}")
     add_custom_command(OUTPUT ${ANALYZE_GRID_FILE}

test/sumfact/poisson/CMakeLists.txt

@@ -50,17 +50,18 @@ dune_add_formcompiler_system_test(UFLFILE poisson_3d.ufl
 #==================================
 # Poisson DG on 'unstructured grid'
 #==================================
-dune_add_formcompiler_system_test(UFLFILE poisson_dg_2d.ufl
-                                  BASENAME sumfact_poisson_dg_2d_unstructured
-                                  INIFILE poisson_dg_2d_unstructured.mini
-                                  ANALYZE_GRID
-                                  )
-dune_add_formcompiler_system_test(UFLFILE poisson_dg_3d.ufl
-                                  BASENAME sumfact_poisson_dg_3d_unstructured
-                                  INIFILE poisson_dg_3d_unstructured.mini
-                                  ANALYZE_GRID
-                                  )
-
+if(consistent-edge-orientation_FOUND)
+  dune_add_formcompiler_system_test(UFLFILE poisson_dg_2d.ufl
+                                    BASENAME sumfact_poisson_dg_2d_unstructured
+                                    INIFILE poisson_dg_2d_unstructured.mini
+                                    ANALYZE_GRID
+                                    )
+  dune_add_formcompiler_system_test(UFLFILE poisson_dg_3d.ufl
+                                    BASENAME sumfact_poisson_dg_3d_unstructured
+                                    INIFILE poisson_dg_3d_unstructured.mini
+                                    ANALYZE_GRID
+                                    )
+endif()
 
 #=============================================
 # Poisson DG using FastDGGridOperator in 2D/3D