myocamlbuild.ml

(* OASIS_START *)
(* DO NOT EDIT (digest: 4e7995f1f6beadaae2c821379ec756b7) *)
module OASISGettext = struct
(* # 22 "src/oasis/OASISGettext.ml" *)


  let ns_ str =
    str


  let s_ str =
    str


  let f_ (str: ('a, 'b, 'c, 'd) format4) =
    str


  let fn_ fmt1 fmt2 n =
    if n = 1 then
      fmt1^^""
    else
      fmt2^^""


  let init =
    []


end

module OASISExpr = struct
(* # 22 "src/oasis/OASISExpr.ml" *)





  open OASISGettext


  type test = string 


  type flag = string 


  type t =
    | EBool of bool
    | ENot of t
    | EAnd of t * t
    | EOr of t * t
    | EFlag of flag
    | ETest of test * string
    


  type 'a choices = (t * 'a) list 


  let eval var_get t =
    let rec eval' =
      function
        | EBool b ->
            b

        | ENot e ->
            not (eval' e)

        | EAnd (e1, e2) ->
            (eval' e1) && (eval' e2)

        | EOr (e1, e2) ->
            (eval' e1) || (eval' e2)

        | EFlag nm ->
            let v =
              var_get nm
            in
              assert(v = "true" || v = "false");
              (v = "true")

        | ETest (nm, vl) ->
            let v =
              var_get nm
            in
              (v = vl)
    in
      eval' t


  let choose ?printer ?name var_get lst =
    let rec choose_aux =
      function
        | (cond, vl) :: tl ->
            if eval var_get cond then
              vl
            else
              choose_aux tl
        | [] ->
            let str_lst =
              if lst = [] then
                s_ "<empty>"
              else
                String.concat
                  (s_ ", ")
                  (List.map
                     (fun (cond, vl) ->
                        match printer with
                          | Some p -> p vl
                          | None -> s_ "<no printer>")
                     lst)
            in
              match name with
                | Some nm ->
                    failwith
                      (Printf.sprintf
                         (f_ "No result for the choice list '%s': %s")
                         nm str_lst)
                | None ->
                    failwith
                      (Printf.sprintf
                         (f_ "No result for a choice list: %s")
                         str_lst)
    in
      choose_aux (List.rev lst)


end


# 132 "myocamlbuild.ml"
module BaseEnvLight = struct
(* # 22 "src/base/BaseEnvLight.ml" *)


  module MapString = Map.Make(String)


  type t = string MapString.t


  let default_filename =
    Filename.concat
      (Sys.getcwd ())
      "setup.data"


  let load ?(allow_empty=false) ?(filename=default_filename) () =
    if Sys.file_exists filename then
      begin
        let chn =
          open_in_bin filename
        in
        let st =
          Stream.of_channel chn
        in
        let line =
          ref 1
        in
        let st_line =
          Stream.from
            (fun _ ->
               try
                 match Stream.next st with
                   | '\n' -> incr line; Some '\n'
                   | c -> Some c
               with Stream.Failure -> None)
        in
        let lexer =
          Genlex.make_lexer ["="] st_line
        in
        let rec read_file mp =
          match Stream.npeek 3 lexer with
            | [Genlex.Ident nm; Genlex.Kwd "="; Genlex.String value] ->
                Stream.junk lexer;
                Stream.junk lexer;
                Stream.junk lexer;
                read_file (MapString.add nm value mp)
            | [] ->
                mp
            | _ ->
                failwith
                  (Printf.sprintf
                     "Malformed data file '%s' line %d"
                     filename !line)
        in
        let mp =
          read_file MapString.empty
        in
          close_in chn;
          mp
      end
    else if allow_empty then
      begin
        MapString.empty
      end
    else
      begin
        failwith
          (Printf.sprintf
             "Unable to load environment, the file '%s' doesn't exist."
             filename)
      end


  let rec var_expand str env =
    let buff =
      Buffer.create ((String.length str) * 2)
    in
      Buffer.add_substitute
        buff
        (fun var ->
           try
             var_expand (MapString.find var env) env
           with Not_found ->
             failwith
               (Printf.sprintf
                  "No variable %s defined when trying to expand %S."
                  var
                  str))
        str;
      Buffer.contents buff


  let var_get name env =
    var_expand (MapString.find name env) env


  let var_choose lst env =
    OASISExpr.choose
      (fun nm -> var_get nm env)
      lst
end


# 237 "myocamlbuild.ml"
module MyOCamlbuildFindlib = struct
(* # 22 "src/plugins/ocamlbuild/MyOCamlbuildFindlib.ml" *)


  (** OCamlbuild extension, copied from
    * http://brion.inria.fr/gallium/index.php/Using_ocamlfind_with_ocamlbuild
    * by N. Pouillard and others
    *
    * Updated on 2009/02/28
    *
    * Modified by Sylvain Le Gall
    *)
  open Ocamlbuild_plugin


  (* these functions are not really officially exported *)
  let run_and_read =
    Ocamlbuild_pack.My_unix.run_and_read


  let blank_sep_strings =
    Ocamlbuild_pack.Lexers.blank_sep_strings


  let exec_from_conf exec =
    let exec =
      let env_filename = Pathname.basename BaseEnvLight.default_filename in
      let env = BaseEnvLight.load ~filename:env_filename ~allow_empty:true () in
      try
        BaseEnvLight.var_get exec env
      with Not_found ->
        Printf.eprintf "W: Cannot get variable %s\n" exec;
        exec
    in
    let fix_win32 str =
      if Sys.os_type = "Win32" then begin
        let buff = Buffer.create (String.length str) in
        (* Adapt for windowsi, ocamlbuild + win32 has a hard time to handle '\\'.
         *)
        String.iter
          (fun c -> Buffer.add_char buff (if c = '\\' then '/' else c))
          str;
        Buffer.contents buff
      end else begin
        str
      end
    in
      fix_win32 exec

  let split s ch =
    let buf = Buffer.create 13 in
    let x = ref [] in
    let flush () =
      x := (Buffer.contents buf) :: !x;
      Buffer.clear buf
    in
      String.iter
        (fun c ->
           if c = ch then
             flush ()
           else
             Buffer.add_char buf c)
        s;
      flush ();
      List.rev !x


  let split_nl s = split s '\n'


  let before_space s =
    try
      String.before s (String.index s ' ')
    with Not_found -> s

  (* ocamlfind command *)
  let ocamlfind x = S[Sh (exec_from_conf "ocamlfind"); x]

  (* This lists all supported packages. *)
  let find_packages () =
    List.map before_space (split_nl & run_and_read "ocamlfind list")


  (* Mock to list available syntaxes. *)
  let find_syntaxes () = ["camlp4o"; "camlp4r"]


  let well_known_syntax = [
    "camlp4.quotations.o";
    "camlp4.quotations.r";
    "camlp4.exceptiontracer";
    "camlp4.extend";
    "camlp4.foldgenerator";
    "camlp4.listcomprehension";
    "camlp4.locationstripper";
    "camlp4.macro";
    "camlp4.mapgenerator";
    "camlp4.metagenerator";
    "camlp4.profiler";
    "camlp4.tracer"
  ]


  let dispatch =
    function
      | After_options ->
          (* By using Before_options one let command line options have an higher
           * priority on the contrary using After_options will guarantee to have
           * the higher priority override default commands by ocamlfind ones *)
          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";
          Options.ocamlmklib := ocamlfind & A"ocamlmklib"

      | After_rules ->

          (* When one link an OCaml library/binary/package, one should use
           * -linkpkg *)
          flag ["ocaml"; "link"; "program"] & A"-linkpkg";

          (* For each ocamlfind package one inject the -package option when
           * compiling, computing dependencies, generating documentation and
           * linking. *)
          List.iter
            begin fun pkg ->
              let base_args = [A"-package"; A pkg] in
              (* TODO: consider how to really choose camlp4o or camlp4r. *)
              let syn_args = [A"-syntax"; A "camlp4o"] in
              let args =
              (* Heuristic to identify syntax extensions: whether they end in
                 ".syntax"; some might not.
               *)
                if Filename.check_suffix pkg "syntax" ||
                   List.mem pkg well_known_syntax then
                  syn_args @ base_args
                else
                  base_args
              in
              flag ["ocaml"; "compile";  "pkg_"^pkg] & S args;
              flag ["ocaml"; "ocamldep"; "pkg_"^pkg] & S args;
              flag ["ocaml"; "doc";      "pkg_"^pkg] & S args;
              flag ["ocaml"; "link";     "pkg_"^pkg] & S base_args;
              flag ["ocaml"; "infer_interface"; "pkg_"^pkg] & S args;
            end
            (find_packages ());

          (* Like -package but for extensions syntax. Morover -syntax is useless
           * when linking. *)
          List.iter begin fun syntax ->
          flag ["ocaml"; "compile";  "syntax_"^syntax] & S[A"-syntax"; A syntax];
          flag ["ocaml"; "ocamldep"; "syntax_"^syntax] & S[A"-syntax"; A syntax];
          flag ["ocaml"; "doc";      "syntax_"^syntax] & S[A"-syntax"; A syntax];
          flag ["ocaml"; "infer_interface"; "syntax_"^syntax] &
                S[A"-syntax"; A syntax];
          end (find_syntaxes ());

          (* The default "thread" tag is not compatible with ocamlfind.
           * Indeed, the default rules add the "threads.cma" or "threads.cmxa"
           * options when using this tag. When using the "-linkpkg" option with
           * ocamlfind, this module will then be added twice on the command line.
           *
           * To solve this, one approach is to add the "-thread" option when using
           * the "threads" package using the previous plugin.
           *)
          flag ["ocaml"; "pkg_threads"; "compile"] (S[A "-thread"]);
          flag ["ocaml"; "pkg_threads"; "doc"] (S[A "-I"; A "+threads"]);
          flag ["ocaml"; "pkg_threads"; "link"] (S[A "-thread"]);
          flag ["ocaml"; "pkg_threads"; "infer_interface"] (S[A "-thread"]);
          flag ["ocaml"; "package(threads)"; "compile"] (S[A "-thread"]);
          flag ["ocaml"; "package(threads)"; "doc"] (S[A "-I"; A "+threads"]);
          flag ["ocaml"; "package(threads)"; "link"] (S[A "-thread"]);
          flag ["ocaml"; "package(threads)"; "infer_interface"] (S[A "-thread"]);

      | _ ->
          ()
end

module MyOCamlbuildBase = struct
(* # 22 "src/plugins/ocamlbuild/MyOCamlbuildBase.ml" *)


  (** Base functions for writing myocamlbuild.ml
      @author Sylvain Le Gall
    *)





  open Ocamlbuild_plugin
  module OC = Ocamlbuild_pack.Ocaml_compiler


  type dir = string 
  type file = string 
  type name = string 
  type tag = string 


(* # 62 "src/plugins/ocamlbuild/MyOCamlbuildBase.ml" *)


  type t =
      {
        lib_ocaml: (name * dir list * string list) list;
        lib_c:     (name * dir * file list) list;
        flags:     (tag list * (spec OASISExpr.choices)) list;
        (* Replace the 'dir: include' from _tags by a precise interdepends in
         * directory.
         *)
        includes:  (dir * dir list) list;
      } 


  let env_filename =
    Pathname.basename
      BaseEnvLight.default_filename


  let dispatch_combine lst =
    fun e ->
      List.iter
        (fun dispatch -> dispatch e)
        lst


  let tag_libstubs nm =
    "use_lib"^nm^"_stubs"


  let nm_libstubs nm =
    nm^"_stubs"


  let dispatch t e =
    let env =
      BaseEnvLight.load
        ~filename:env_filename
        ~allow_empty:true
        ()
    in
      match e with
        | Before_options ->
            let no_trailing_dot s =
              if String.length s >= 1 && s.[0] = '.' then
                String.sub s 1 ((String.length s) - 1)
              else
                s
            in
              List.iter
                (fun (opt, var) ->
                   try
                     opt := no_trailing_dot (BaseEnvLight.var_get var env)
                   with Not_found ->
                     Printf.eprintf "W: Cannot get variable %s\n" var)
                [
                  Options.ext_obj, "ext_obj";
                  Options.ext_lib, "ext_lib";
                  Options.ext_dll, "ext_dll";
                ]

        | After_rules ->
            (* Declare OCaml libraries *)
            List.iter
              (function
                 | nm, [], intf_modules ->
                     ocaml_lib nm;
                     let cmis =
                       List.map (fun m -> (String.uncapitalize m) ^ ".cmi")
                                intf_modules in
                     dep ["ocaml"; "link"; "library"; "file:"^nm^".cma"] cmis
                 | nm, dir :: tl, intf_modules ->
                     ocaml_lib ~dir:dir (dir^"/"^nm);
                     List.iter
                       (fun dir ->
                          List.iter
                            (fun str ->
                               flag ["ocaml"; "use_"^nm; str] (S[A"-I"; P dir]))
                            ["compile"; "infer_interface"; "doc"])
                       tl;
                     let cmis =
                       List.map (fun m -> dir^"/"^(String.uncapitalize m)^".cmi")
                                intf_modules in
                     dep ["ocaml"; "link"; "library"; "file:"^dir^"/"^nm^".cma"]
                         cmis)
              t.lib_ocaml;

            (* Declare directories dependencies, replace "include" in _tags. *)
            List.iter
              (fun (dir, include_dirs) ->
                 Pathname.define_context dir include_dirs)
              t.includes;

            (* Declare C libraries *)
            List.iter
              (fun (lib, dir, headers) ->
                   (* Handle C part of library *)
                   flag ["link"; "library"; "ocaml"; "byte"; tag_libstubs lib]
                     (S[A"-dllib"; A("-l"^(nm_libstubs lib)); A"-cclib";
                        A("-l"^(nm_libstubs lib))]);

                   flag ["link"; "library"; "ocaml"; "native"; tag_libstubs lib]
                     (S[A"-cclib"; A("-l"^(nm_libstubs lib))]);

                   flag ["link"; "program"; "ocaml"; "byte"; tag_libstubs lib]
                     (S[A"-dllib"; A("dll"^(nm_libstubs lib))]);

                   (* When ocaml link something that use the C library, then one
                      need that file to be up to date.
                    *)
                   dep ["link"; "ocaml"; "program"; tag_libstubs lib]
                     [dir/"lib"^(nm_libstubs lib)^"."^(!Options.ext_lib)];

                   dep  ["compile"; "ocaml"; "program"; tag_libstubs lib]
                     [dir/"lib"^(nm_libstubs lib)^"."^(!Options.ext_lib)];

                   (* TODO: be more specific about what depends on headers *)
                   (* Depends on .h files *)
                   dep ["compile"; "c"]
                     headers;

                   (* Setup search path for lib *)
                   flag ["link"; "ocaml"; "use_"^lib]
                     (S[A"-I"; P(dir)]);
              )
              t.lib_c;

              (* Add flags *)
              List.iter
              (fun (tags, cond_specs) ->
                 let spec = BaseEnvLight.var_choose cond_specs env in
                 let rec eval_specs =
                   function
                     | S lst -> S (List.map eval_specs lst)
                     | A str -> A (BaseEnvLight.var_expand str env)
                     | spec -> spec
                 in
                   flag tags & (eval_specs spec))
              t.flags
        | _ ->
            ()


  let dispatch_default t =
    dispatch_combine
      [
        dispatch t;
        MyOCamlbuildFindlib.dispatch;
      ]


end


# 594 "myocamlbuild.ml"
open Ocamlbuild_plugin;;
let package_default =
  {
     MyOCamlbuildBase.lib_ocaml =
       [("deriving-yojson", [], []); ("syntax", ["syntax"], [])];
     lib_c = [];
     flags = [];
     includes = [("exemple", ["syntax"])]
  }
  ;;

let dispatch_default = MyOCamlbuildBase.dispatch_default package_default;;

# 609 "myocamlbuild.ml"
(* OASIS_STOP *)

Ocamlbuild_plugin.dispatch (fun hook ->
    dispatch_default hook;
    match hook with
      | After_rules ->
        (* Internal syntax extension *)
        List.iter
          (fun (dir,base) ->
             let tag = "pa_" ^ base and file = dir / "pa_" ^ base ^ ".cmo" in
             flag ["ocaml"; "compile"; tag] &  S[A"-ppopt"; A file];
             flag ["ocaml"; "ocamldep"; tag] & S[A"-ppopt"; A file];
             flag ["ocaml"; "doc"; tag] &      S[A"-ppopt"; A file];
             dep ["ocaml"; "ocamldep"; tag] [file])
          [("syntax","deriving_yojson")];
      | _ -> ())