Cross Compiling on macOS for Windows

Is there any guidance available yet on how to cross compile swift on a macOS machine that targets Windows?

Thanks

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As far as I can tell, the toolchain shipped with XCode differs from the one used to build the Windows SDK. This causes issues in cross-compilation that I haven't found a workaround for yet. @SDGGiesbrecht has great information on cross-compiling from WSL, if that's a direction you're interested in trying.