How-to compile only /usr/bin/env

[address@hidden]

I'm building a minimalistic Linux-based OS that just start to a
Node.js shell (http://node-os.com/) and I need the /usr/bin/env binary
so scripts can work without needing to hardcode the shebang. Problem
is, that altough I only need the env binary, I need to compile all the
coreutils. I've tried both with 'make env' and 'make src/env' without
success, so I ask:

* is there any way to compile only one of the coreutils binaries?
* if so, how to do it?

Greetings, Jesús Leganés Combarro "piranna".


-- 
"Si quieres viajar alrededor del mundo y ser invitado a hablar en un
monton de sitios diferentes, simplemente escribe un sistema operativo
Unix."
– Linus Tordvals, creador del sistema operativo Linux