[thomaz]

"Lisp compiler in (arbitrary language) in (arbitrary number lines."

Why not just metaprogram this?

[silentbicycle]

Metaprogramming isn't free. Trivial conversion from lang A to lang B, even less so.

I dare you to write a program that compiles arbitrary Java code to awk. They're both Turing-complete, so it's guaranteed to be possible! Cheers!