> make world
>
> everything compiled but
>
> ./ocaml
>         Objective Caml version 3.10+dev10 (2006-10-04)
>
> Fatal error: exception Env.Error(_)

It looks you're tring to run OCaml before having installed it.  This
will, in general, not work.  You'd need to do something like
boot/ocamlrun ./ocaml -nostdlib -I ./stdlib.  But save yourself the
pain and just install after compiling.

- Xavier Leroy