type command_spec = Command.specval build_dir : string refval include_dirs : string list refval exclude_dirs : string list refval nothing_should_be_rebuilt : bool refval ocamlc : command_spec refval ocamlopt : command_spec refval ocamldep : command_spec refval ocamldoc : command_spec refval ocamlyacc : command_spec refval ocamllex : command_spec refval ocamlrun : command_spec refval ocamlmklib : command_spec refval ocamlmktop : command_spec refval hygiene : bool refval sanitize : bool refval sanitization_script : string refval ignore_auto : bool refval plugin : bool refval just_plugin : bool refval native_plugin : bool refval make_links : bool refval nostdlib : bool refval program_to_execute : bool refval must_clean : bool refval catch_errors : bool refval use_menhir : bool refval show_documentation : bool refval recursive : bool refval use_ocamlfind : bool refval targets : string list refval ocaml_libs : string list refval ocaml_mods : string list refval ocaml_pkgs : string list refval ocaml_syntax : string option refval ocaml_cflags : string list refval ocaml_lflags : string list refval ocaml_ppflags : string list refval ocaml_docflags : string list refval ocaml_yaccflags : string list refval ocaml_lexflags : string list refval program_args : string list refval ignore_list : string list refval tags : string list refval tag_lines : string list refval show_tags : string list refval ext_obj : string refval ext_lib : string refval ext_dll : string refval exe : string refval add : (string * Arg.spec * string) -> unit