Install OCaml+OPAM

There are PPAs available that are pinned to specific revisions of OCaml and OPAM.

add-apt-repository ppa:avsm/ppa
apt-get update
apt-get install ocaml opam

Or you can install pre-compiled versions using Binary installer.

wget https://raw.github.com/ocaml/opam/master/shell/opam_installer.sh
sh ./opam_installer.sh /usr/local/bin

Install utop

utop is an improved toplevel for OCaml. You can install utop using opam installl.

opam install utop

Install Core library

Core library is Jane Street’s alternative to the standard library. You can install Core library using opam install

opam install core
opam install async
opam install core_extended

Put the following in your .ocamlinit file to use Core and its associated libraries and syntax extensions in the toplevel:

#use “topfind”
#thread
#require “dynlink”
#camlp4o
#require “bin_prot.syntax”
#require “sexplib.syntax”
#require “variantslib.syntax”
#require “fieldslib.syntax”
#require “comparelib.syntax”
#require “core”
#require “async”
#require “core_extended”
#require “core.top”
open Core.Std