> No, End_of_file is a predefined exception. Actually, you must not define > it, the compiler does it for you. That's what I thought; so I can't figure out why it's missing. Could it be how I compiled ocamlc? I removed all the bootstrap stuff, and used system ocaml 3.09 compiler tools to build the custom ocaml environment. I'll attach the modified makefile, so it's clear what I've done. And, if this is the case, then what are the correct steps to building ocamlc without requiring a bootstrap cycle? Jonathan