open Ocamlbuild_plugin
open Command

let ocamlfind_packages = "unix,ulex,expat,camlp4,camlp4.lib,camlp4.macro"

let ocamlfind x = S[ T (Tags.singleton "ocamlfind");
                     A "ocamlfind"; x ;
                     A "-package";
                     A ocamlfind_packages;
                     A "-syntax";
                     A "camlp4o";
                     A "-ppopt"; A "-I"; A"-ppopt"; A"include"
                   ]

let () = dispatch begin
  function
    | Before_rules ->
      Options.ocamlc := ocamlfind  (A"ocamlc");
      Options.ocamlopt := ocamlfind (A"ocamlopt");
      Options.ocamldep := ocamlfind (A"ocamldep");
      Options.ocamldoc := ocamlfind (A"ocamldoc");
      Options.ocamlmktop := ocamlfind (A"ocamlmktop");
      dep [ "extension:ml" ]
        (List.map (fun s -> "include/" ^ s )
           (Array.to_list (Pathname.readdir "include")));
      flag [ "ocaml"; "link" ] (A"-linkpkg")
    | _ -> ()
end