This example relies on
  - OCaml,
  - 'opam', the OCaml package manager.
The following get installed through 'opam':
  - 'dune', part of the OCaml build system,
  - the opam package 'gettext-stub'
    <https://opam.ocaml.org/packages/gettext-stub/>
    <https://github.com/gildor478/ocaml-gettext/>
    <https://gildor478.github.io/ocaml-gettext/>

Preparation: Define environment variable for use of 'opam':
  $ eval $(opam env)
  $ opam install dune
  $ opam install gettext-stub

Installation:
  ./autogen.sh
  ./configure --prefix=/some/prefix
  make
  make install
Cleanup:
  make distclean
  ./autoclean.sh
