Better warnings about 8.90

CMake/SuperBuild.cmake

 endif()
 
 if ( LEMMA_VTK8_SUPPORT )
-    find_package(VTK 8)
-#   find_package(VTK 8.9 COMPONENTS vtkCommonCore vtkRenderingCore vtkFiltersCore vtkFiltersSources 
-#           vtkCommonDataModel vtkFiltersHyperTree vtkIOXML vtkIOImage vtkIOLegacy vtkIOGeometry vtkInteractionStyle 
-#           vtkRenderingAnnotation vtkFiltersHybrid vtkFiltersModeling vtkRenderingVolumeOpenGL2 NO_MODULE)
-    #find_package(VTK 8 NO_MODULE) 
-            #vtkCommonDataModel vtkFiltersHyperTree vtkIOXML vtkIOImage vtkIOLegacy vtkIOGeometry vtkInteractionStyle 
-            #vtkRenderingAnnotation vtkFiltersHybrid vtkFiltersModeling vtkRenderingVolumeOpenGL2 NO_MODULE)
     if ( NOT VTK_FOUND OR  VTK_VERSION VERSION_GREATER "8.2.0" )
-        #message(FATAL_ERROR "VTK 8 was found, but the wrong one! " ${VTK_VERSION}, ${VTK_MINOR_VERSION}, ${VTK_USE_FILE} ) 
-        #endif()
-        #if ( VTK_VERSION VERSION_GREATER "8.20.0" ) # or VTK_DIR-NOTFOUND)
-        #message( AUTHOR_WARNING  "VTK > 8.20.0 was found! " ${VTK_VERSION}, ${VTK_MINOR_VERSION}, ${VTK_USE_FILE} )
-        #message( FATAL_ERROR  "VTK > 8.20.0 was found! Version found: " ${VTK_VERSION}, ${VTK_USE_FILE} )
-        message( STATUS  "VTK > 8.20.0 was found! Version found: " ${VTK_VERSION}, ${VTK_USE_FILE} )
+        message( STATUS "VTK > 8.20.0 was found! Version found: " ${VTK_VERSION}, ${VTK_USE_FILE} )
         message( STATUS "External build of VTK 8 has been added, this may take some time to build." )
         ExternalProject_Add(VTK8
         GIT_REPOSITORY "https://gitlab.kitware.com/vtk/vtk.git"

CMakeLists.txt

     project (CHECKSUPERBUILD CXX) # Necessary for VTK query 
     find_package (yaml-cpp 0.6         PATHS ${CMAKE_INSTALL_PREFIX}  NO_DEFAULT_PATH) # Serialisation of classes 
     find_package (Eigen3   3.3         PATHS ${CMAKE_INSTALL_PREFIX}  NO_DEFAULT_PATH) # Matrix/Vector & Math
-    if (LEMMA_VTK8_SUPPORT)
-        find_package (VTK  8.2.0 EXACT PATHS ${CMAKE_INSTALL_PREFIX}  NO_DEFAULT_PATH) # Visualization 
+    if (LEMMA_VTK8_SUPPORT)                                                            # Visualisation 
+        find_package (VTK  8.2.0       PATHS ${CMAKE_INSTALL_PREFIX}  NO_DEFAULT_PATH 
+        COMPONENTS 
+        vtkCommonCore 
+        vtkRenderingCore 
+        vtkFiltersCore 
+        vtkFiltersSources 
+        vtkCommonDataModel 
+        vtkFiltersHyperTree 
+        vtkIOXML 
+        vtkIOImage 
+        vtkIOLegacy 
+        vtkIOGeometry 
+        vtkInteractionStyle 
+        vtkRenderingAnnotation 
+        vtkFiltersHybrid 
+        vtkFiltersModeling 
+        vtkRenderingVolumeOpenGL2
+        QUIET 
+        ) 
     endif()
 else()
     find_package (Eigen3   3.3 QUIET )  # Matrix/Vector & Math
     find_package (yaml-cpp 0.6 QUIET )  # Serialisation of classes 
     if (LEMMA_VTK8_SUPPORT)
-        find_package (VTK  8.2 QUIET )  # Visualization 
+        find_package (VTK  8.2 COMPONENTS
+        vtkCommonCore 
+        vtkRenderingCore 
+        vtkFiltersCore 
+        vtkFiltersSources 
+        vtkCommonDataModel 
+        vtkFiltersHyperTree 
+        vtkIOXML 
+        vtkIOImage 
+        vtkIOLegacy 
+        vtkIOGeometry 
+        vtkInteractionStyle 
+        vtkRenderingAnnotation 
+        vtkFiltersHybrid 
+        vtkFiltersModeling 
+        vtkRenderingVolumeOpenGL2 
+        QUIET )  
     endif()
 endif()
 
 INCLUDE_DIRECTORIES(${YAML_CPP_INCLUDE_DIR})
+if (VTK_VERSION VERSION_GREATER "8.2.0")
+    message( STATUS "${VTK_VERSION} is compatible??  ${VTK_VERSION_COMPATIBLE}")
+    set (VTK_FOUND False) 
+endif()
 if (VTK_FOUND)
     set(volumeRenderer volumerenderer.cxx)
 	add_definitions(-DLEMMAUSEVTK)