Making .NET-assemblies available to native languages

As jb from #mono pointed out, there's already a tool that converts Assemblies to corresponding glue-code in C, called cilc. It's included in mono and uses mono runtime libraries, so you need to have mono installed to use it.
I could only find a man-page here, but no documentation so far, but it should be fairly easy to use and understand the C-code, I guess.