CUDA 10 on WIndows 10, build fails for DirectX interops

When building cuda examples, none that demonstrate interoperability between CUDA and DirectX compile e.g.
https://docs.nvidia.com/cuda/cuda-samples/index.html#simple-d3d11-texture

The errors I get are

Severity Code Description Project File Line Suppression State
Error (active) E1696 cannot open source file “d3dx11.h” simpleD3D11Texture …\v10.0\common\inc\dynlink_d3d11.h 49
Error (active) E1696 cannot open source file “dxerr.h” simpleD3D11Texture …\v10.0\common\inc\dynlink_d3d11.h 56
Error (active) E1696 cannot open source file “d3dx11.h” simpleD3D11Texture …\v10.0\common\inc\rendercheck_d3d11.h 22
Error (active) E0020 identifier “ID3DX11ThreadPump” is undefined simpleD3D11Texture …\v10.0\common\inc\dynlink_d3d11.h 79

Has anyone been able to build these examples?

https://docs.nvidia.com/cuda/cuda-installation-guide-microsoft-windows/index.html#sample-projects

Thanks, needed to download the windows SDK…