Skip vtkDataObjectImplicitBackendInstantiateIdType

Since vtkIdType is just a typedef for one of the fundamental
types for which the template is already instantiated, we must
avoid instantiating for vtkIdType since the instantiation will
result in duplicate template symbols.  Most linkers will handle
the duplicated template symbols, but some linkers will generate
an error.

Common/DataModel/CMakeLists.txt

@@ -315,9 +315,12 @@ set(private_templates
 include(vtkTypeLists)
 
 set(instantiation_sources)
-foreach (_type IN LISTS vtk_numeric_types)
-  set(INSTANTIATION_VALUE_TYPE "${_type}")
-  vtk_type_to_camel_case("${_type}" _cased_type)
+foreach (INSTANTIATION_VALUE_TYPE IN LISTS vtk_numeric_types)
+  # only instantiate fundamental types, not typedefs
+  if (INSTANTIATION_VALUE_TYPE STREQUAL "vtkIdType")
+    continue()
+  endif ()
+  vtk_type_to_camel_case("${INSTANTIATION_VALUE_TYPE}" _cased_type)
   configure_file(
     "${CMAKE_CURRENT_SOURCE_DIR}/vtkDataObjectImplicitBackendInstantiate.cxx.in"
     "${CMAKE_CURRENT_BINARY_DIR}/vtkDataObjectImplicitBackendInstantiate${_cased_type}.cxx")