Required OpenImageDenoiseLibraries_0.9

Here are the needed libraries, unzip this into

blender-git\lib\win64_vc14

So the final folder structure should look like:

blender-git\lib\win64_vc14\OpenImageDenoise

Keep in mind that this is for Windows x64, for Linux use make deps in the Blender git folder and you should be good to go.

For OSx I don't have instructions, I cannot build it for OSx, sorry.