Where is copy_required_dlls() coming from?

[markusbkk]

When I try to build a "HelloDiligent" project as outlined here CMake errors out with Unknown CMake command "copy_required_dlls".

Where is this function coming from? Is this a CMake built-in or something created by Diligent? Is it only available for Windows (I'm on GNU/Linux)?

[TheMostDiligent]

It is a utility function defined here. It is available on Windows only and is used to copy the dlls next to the executable.