COMP:typo in VTK/Rendering/CMakeLists.txt (KIT_SRCS when it should be Kit_SRCS) prevented compiling GPUInfo files. Report VTK_USE_DIRECTX, VTK_USE_CORE_GRAPHICS and VTK_USE_NVCONTROL in VTK/vtkToolkits.h.in (might be changed to vtkConfigure.h.in if anybody complain).