If you're doing a compiled language, you'll end up having to interface to LLVM, or write your own output in assembler or ELF or Win32 EXE files. LLVM has been h

If you're doing a compiled language, you'll end up having to interface to LLVM, or write your own output in assembler or ELF or Win32 EXE files. LLVM has been hooked up to almost every compiled language you'll need. They're even figuring out how to hook it up to Free Pascal. If you're doing an interpreted language, things get a lot looser. If you've done any programming in the past, it's likely the language you're most familiar with will work ok.