MinGW LLVM?

I'm working on a new compiler that uses LLVM, and it would be nice to be able to cross-compile it with MinGW. Has anyone given any thought to building the LLVM package for MinGW? I wouldn't need the llvm-gcc front end, only the LLVM libraries. If no one else has looked at it, I might eventually find time to try it myself. I don't yet have any experience building and packaging libraries for MinGW, but now there are plenty of examples I can look at. Thanks, Eric