[Haskell-cafe] Cross compilation

Hi, I have a Mac OS X workstation and want to compile a cli for Linux (and potentially Windows) in addition to OS X. I could not find anything but https://ghc.haskell.org/trac/ghc/wiki/CrossCompilation. This has an explanation how I can build a cross compiling GHC for a specific combination of build and target system/architecture. Stack has an open issue regarding cross compilation. Is that really all there is out there? Regards Jan