dividing a project across directories

[James Hague]

I know how to modify the code loading path, so beam files in different
directories can be loaded. Easy!

But is there a way to break a project into multiple directories and
still be able to use c(module) from the shell to compile them without
specifying a path? And can I specify where the compiled code should
go, instead of always being written to the current directory?

Up until now, I've always just tossed all my erl and beam files in one
directory per project, and that's that.