ocamllex-cppo makes it possible to embed ocamllex definitions in an OCaml file preprocessed with cppo.
Here are the commands to compile a source file example.mlx:
cppo -x ocamllex:ocamllex-cppo example.mlx -o example.ml
ocamlopt -o example example.ml
make install
or
make PREFIX=/usr/local install # defaults to $HOME
For a demo, do:
make demo