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+(* OASIS_START *)
+(* DO NOT EDIT (digest: 1307a09953cf80c9246f353707922b60) *)
+Authors of ocaml-cstruct-codegen
+Dmitry Grebeniuk <gdsfh1@gmail.com>
+(* OASIS_STOP *)
+(* OASIS_START *)
+(* DO NOT EDIT (digest: 7ce43699f4dc35e621c7f94df570c2a2) *)
+This is the INSTALL file for the ocaml-cstruct-codegen distribution.
+
+This package uses OASIS to generate its build system. See section OASIS for
+full information. 
+
+Dependencies
+============
+
+In order to compile this package, you will need:
+* ocaml
+* findlib
+
+Installing
+==========
+
+1. Uncompress the source archive and go to the root of the package
+2. Run 'ocaml setup.ml -configure'
+3. Run 'ocaml setup.ml -build'
+4. Run 'ocaml setup.ml -install'
+
+Uninstalling
+============
+
+1. Go to the root of the package 
+2. Run 'ocaml setup.ml -uninstall'
+
+OASIS
+=====
+
+OASIS is a program that generates a setup.ml file using a simple '_oasis'
+configuration file. The generated setup only depends on the standard OCaml
+installation: no additional library is required.
+
+(* OASIS_STOP *)
+# OASIS_START
+# DO NOT EDIT (digest: bc1e05bfc8b39b664f29dae8dbd3ebbb)
+
+SETUP = ocaml setup.ml
+
+build: setup.data
+	$(SETUP) -build $(BUILDFLAGS)
+
+doc: setup.data build
+	$(SETUP) -doc $(DOCFLAGS)
+
+test: setup.data build
+	$(SETUP) -test $(TESTFLAGS)
+
+all: 
+	$(SETUP) -all $(ALLFLAGS)
+
+install: setup.data
+	$(SETUP) -install $(INSTALLFLAGS)
+
+uninstall: setup.data
+	$(SETUP) -uninstall $(UNINSTALLFLAGS)
+
+reinstall: setup.data
+	$(SETUP) -reinstall $(REINSTALLFLAGS)
+
+clean: 
+	$(SETUP) -clean $(CLEANFLAGS)
+
+distclean: 
+	$(SETUP) -distclean $(DISTCLEANFLAGS)
+
+setup.data:
+	$(SETUP) -configure $(CONFIGUREFLAGS)
+
+.PHONY: build doc test all install uninstall reinstall clean distclean configure
+
+# OASIS_STOP
+
+test1: all
+	./test1.byte
+(* OASIS_START *)
+(* DO NOT EDIT (digest: 48387c4b705458822196dc29f25d4964) *)
+This is the README file for the ocaml-cstruct-codegen distribution.
+
+Library for generating OCaml code to work with C-like structures
+
+See the files INSTALL.txt for building and installation instructions. 
+
+
+(* OASIS_STOP *)
+OASISFormat: 0.3
+Name:        ocaml-cstruct-codegen
+Version:     0.1
+Synopsis:    Library for generating OCaml code to work with C-like structures
+Authors:     Dmitry Grebeniuk <gdsfh1@gmail.com>
+License:     LGPL-2.1 with OCaml linking exception
+Plugins:     DevFiles (0.3), META (0.3), StdFiles (0.3)
+
+Library cstruct_codegen
+  Path:       lib
+  BuildTools: ocamlbuild
+  Modules:    Cstruct_codegen
+  
+Executable test1
+  Path:       test
+  BuildTools: ocamlbuild
+  MainIs:     test1.ml
+  CompiledObject: byte
+  Install:    false
+# OASIS_START
+# DO NOT EDIT (digest: 9f1fd4d11518eef959bdae37ec89ab1f)
+# Ignore VCS directories, you can use the same kind of rule outside 
+# OASIS_START/STOP if you want to exclude directories that contains 
+# useless stuff for the build process
+<**/.svn>: -traverse
+<**/.svn>: not_hygienic
+".bzr": -traverse
+".bzr": not_hygienic
+".hg": -traverse
+".hg": not_hygienic
+".git": -traverse
+".git": not_hygienic
+"_darcs": -traverse
+"_darcs": not_hygienic
+# Library cstruct_codegen
+"lib/cstruct_codegen.cmxs": use_cstruct_codegen
+# Executable test1
+# OASIS_STOP
+
+<lib/*.ml{,i}> | <test/*.ml{,i}> : camlp4r, warn_A, debug
+<test/*> : use_cstruct_codegen
+#!/bin/sh
+
+# OASIS_START
+# DO NOT EDIT (digest: 425187ed8bfdbdd207fd76392dd243a7)
+set -e
+
+FST=true
+for i in "$@"; do 
+  if $FST; then
+    set --
+    FST=false
+  fi
+
+  case $i in
+    --*=*)
+      ARG=${i%%=*}
+      VAL=${i##*=}
+      set -- "$@" "$ARG" "$VAL"
+      ;;
+    *)
+      set -- "$@" "$i"
+      ;;
+  esac
+done
+
+ocaml setup.ml -configure "$@"
+# OASIS_STOP
+# OASIS_START
+# DO NOT EDIT (digest: 590cc457662040ff70c1714f4a0a5e46)
+version = "0.1"
+description =
+"Library for generating OCaml code to work with C-like structures"
+archive(byte) = "cstruct_codegen.cma"
+archive(byte, plugin) = "cstruct_codegen.cma"
+archive(native) = "cstruct_codegen.cmxa"
+archive(native, plugin) = "cstruct_codegen.cmxs"
+exists_if = "cstruct_codegen.cma"
+# OASIS_STOP
+

File lib/cstruct_codegen.ml

+type ftype =
+  { getter : string
+  ; setter : string
+  ; sz : int
+  ; ocamltype : string
+  ; printer : string
+  }
+;
+
+type cfielddef = { fname : string ; ftype : ftype }
+;
+
+type cstructdef = (string * list cfielddef)
+;
+
+value cstruct name fields = (name, fields)
+;
+
+value accessors_module = "ExtUnix.Specific.BA.LittleEndian"
+;
+
+value printers =
+  [ ("int", "string_of_int")
+  ; ("int64", "Int64.to_string")
+  ]
+;
+
+value fld sz fn mlty =
+  let fty =
+    { getter = accessors_module ^ ".unsafe_get_" ^ fn
+    ; setter = accessors_module ^ ".unsafe_set_" ^ fn
+    ; sz = sz
+    ; ocamltype = mlty
+    ; printer =
+        try
+          List.assoc mlty printers
+        with
+        [ Not_found ->
+            failwith ("can't find printer for OCaml type " ^ mlty)
+        ]
+    }
+  in
+    fun n ->
+      { fname = n
+      ; ftype = fty
+      }
+;
+
+value int8  = fld 1 "int8"  "int"
+  and uint8 = fld 1 "uint8" "int"
+  and int64 = fld 8 "int64" "int64"
+;
+
+
+(************************************************************)
+
+open Printf
+;
+
+value module_ name sig_ struct_ =
+  sprintf "\
+ module %s\n\
+\ :\n\
+\  sig\n%s\
+\  end\n\
+\ =\n\
+\  struct\n%s\
+\  end\n\n"
+    (String.capitalize name) sig_ struct_
+;
+
+
+value list_iteri f l =
+  loop l 0
+  where rec loop l i =
+    match l with
+    [ [] -> ()
+    | [h :: t] -> (f i h; loop t (i+1))
+    ]
+;
+
+
+value string_of_cstructdef (csname, csfields) =
+  let sig__ = ref ""
+  and str__ = ref "" in
+  let add strref fmt =
+    Printf.ksprintf
+      (fun str ->
+         strref.val :=
+             strref.val
+           ^ (if str = "" then "" else "    ")
+           ^ str
+           ^ "\n"
+      )
+      fmt
+  in
+  let str_ fmt = add str__ fmt
+  and sig_ fmt = add sig__ fmt in
+  let rec ident base =
+    if List.exists (fun f -> base = f.fname) csfields
+    then ident (base ^ "'")
+    else base
+  in
+  let ident_t = ident "t" in
+  let cur_ofs = ref 0 in
+  let ba_type =
+    "(char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t"
+  and ba_create = "Bigarray.Array1.create Bigarray.char Bigarray.c_layout" in
+  ( sig_ ""
+  ; sig_ "(* Abstract data type to represent values of C-like structure '%s' *)"
+      csname
+  ; sig_ "type t"
+  ; str_ "type t = %s" ba_type
+  ; sig_ ""
+  ; sig_ "(* size of structure [t] in bytes *)"
+  ; sig_ "val sizeof : int"
+  ; sig_ ""
+  ; sig_ "(* Creates a value of type [t] on bigarray of size [sizeof]."
+  ; sig_ "   one can modify bigarray, and these modifications will"
+  ; sig_ "   affect fields of created value (they will be visible with"
+  ; sig_ "   get_<field> or [dump])."
+  ; sig_ "   Raises [Failure] on size mismatch. *)"
+  ; sig_ "val of_bigarray : %s -> t" ba_type
+
+  ; sig_ ""
+  ; sig_ "(* [bigarray_of s] returns bigarray containing all fields of [s]"
+  ; sig_ "   in C-like layout. *)"
+  ; sig_ "val bigarray_of : t -> %s" ba_type
+  ; str_ "let bigarray_of t = t"
+
+  ; sig_ ""
+  ; sig_ "(* [create ()] creates an uninitialized structure of type [t]."
+  ; sig_ "   It can be useful when:"
+  ; sig_ "   - one wants to set all fields manually with setters"
+  ; sig_ "     (however consider [make] function below, it gives guarantees"
+  ; sig_ "     that every field is initialized)"
+  ; sig_ "   - one wants to modify structure's bigarray (returned by"
+  ; sig_ "     [bigarray_of]): fill it from file, socket etc. *)"
+  ; sig_ "val create : unit -> t"
+
+  ; sig_ ""
+  ; sig_ "(* getters and setters: *)"
+  ; str_ ""
+  ; let for_field { fname = fname ; ftype = ftype } =
+      let getter = "get_" ^ fname
+      and setter = "set_" ^ fname in
+      ( sig_
+          "val %s : t -> %s"
+          getter ftype.ocamltype
+      ; sig_
+          "val %s : t -> %s -> unit"
+          setter ftype.ocamltype
+      ; str_
+          "let %s t = %s t %i"
+          getter ftype.getter cur_ofs.val
+      ; str_
+          "let %s t v = %s t %i v"
+          setter ftype.setter cur_ofs.val
+      ; cur_ofs.val := cur_ofs.val + ftype.sz
+      )
+    in
+      List.iter for_field csfields
+
+  ; str_ "let sizeof = %i" cur_ofs.val
+
+  ; str_ ""
+  ; str_ "let of_bigarray t ="
+  ; str_ "  if Bigarray.Array1.dim t <> sizeof"
+  ; str_ "  then failwith \"%s.of_bigarray: size doesn't match\""
+                  (String.capitalize csname)
+  ; str_ "  else t"
+
+  ; str_ "let create () = %s sizeof" ba_create
+
+  ; sig_ ""
+  ; sig_ "(* makes a value of type [t] and initializes it with"
+  ; sig_ "   field values passed as labelled arguments. *)"
+  ; sig_ "val make : %st"
+      (String.concat ""
+         (List.map
+            (fun fld ->
+               fld.fname ^ ":" ^ fld.ftype.ocamltype ^ " -> "
+            )
+            csfields
+         )
+      )
+  ; str_ ""
+  ; str_ "let make %s ="
+      (String.concat " " (List.map (fun f -> "~" ^ f.fname) csfields))
+  ; str_ "  let %s = %s sizeof in" ident_t ba_create
+  ; str_ "  ("
+  ; List.iter
+     (fun f -> str_ "    set_%s %s %s;" f.fname ident_t f.fname
+     )
+     csfields
+  ; str_ "    %s" ident_t
+  ; str_ "  )"
+
+  ; sig_ ""
+  ; sig_ "(* dumps a value of type [t] to string, result looks like"
+  ; sig_ "   \"{ a=1 ; b=3456 }\" *)"
+  ; sig_ "val dump : t -> string"
+  ; str_ ""
+  ; str_ "let dump t ="
+  ; str_ "  let b = Buffer.create 50 in"
+  ; str_ "  ("
+  ; list_iteri
+     (fun i f ->
+        ( str_ "    Buffer.add_string b %S;"
+            ((if i = 0 then "{ " else " ; ") ^ f.fname ^ "=")
+        ; str_ "    Buffer.add_string b (%s (get_%s t));"
+            f.ftype.printer f.fname
+        )
+     )
+     csfields
+  ; str_ "    Buffer.add_string b %S;" " }"
+  ; str_ "    Buffer.contents b"
+  ; str_ "  )"
+
+  ; module_ csname sig__.val str__.val
+  )
+;
+
+value codegen_cstruct outch (cs : cstructdef) =
+  output_string outch (string_of_cstructdef cs)
+;
+
+
+value codegen filename cstructs =
+  let outch = open_out filename in
+  let () = List.iter (codegen_cstruct outch) cstructs in
+  close_out outch
+;

File lib/cstruct_codegen.mli

+(* abstract types: *)
+
+type cfielddef;
+type cstructdef;
+
+(* how to define structure: *)
+
+value cstruct : string -> list cfielddef -> cstructdef;
+
+(* how to define structure's fields: *)
+
+value int8  : string -> cfielddef;
+value uint8 : string -> cfielddef;
+value int64 : string -> cfielddef;
+
+(* how to write an .ml-file with generated code: *)
+
+value codegen : string -> list cstructdef -> unit;

File lib/cstruct_codegen.mllib

+# OASIS_START
+# DO NOT EDIT (digest: 322d1dade8bcc175aa30cee6d6f54f7f)
+Cstruct_codegen
+# OASIS_STOP

File myocamlbuild.ml

+(* OASIS_START *)
+(* DO NOT EDIT (digest: aced1fbb9308c7fa6711ad50e829dc02) *)
+module OASISGettext = struct
+(* # 21 "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
+(* # 21 "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
+
+
+# 117 "myocamlbuild.ml"
+module BaseEnvLight = struct
+(* # 21 "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 var_get name env =
+    let rec var_expand str =
+      let buff =
+        Buffer.create ((String.length str) * 2)
+      in
+        Buffer.add_substitute
+          buff
+          (fun var ->
+             try
+               var_expand (MapString.find var env)
+             with Not_found ->
+               failwith
+                 (Printf.sprintf
+                    "No variable %s defined when trying to expand %S."
+                    var
+                    str))
+          str;
+        Buffer.contents buff
+    in
+      var_expand (MapString.find name env)
+
+  let var_choose lst env =
+    OASISExpr.choose
+      (fun nm -> var_get nm env)
+      lst
+end
+
+
+# 215 "myocamlbuild.ml"
+module MyOCamlbuildFindlib = struct
+(* # 21 "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 split s ch =
+    let x = 
+      ref [] 
+    in
+    let rec go s =
+      let pos = 
+        String.index s ch 
+      in
+        x := (String.before s pos)::!x;
+        go (String.after s (pos + 1))
+    in
+      try
+        go s
+      with Not_found -> !x
+
+  let split_nl s = split s '\n'
+
+  let before_space s =
+    try
+      String.before s (String.index s ' ')
+    with Not_found -> s
+
+  (* this lists all supported packages *)
+  let find_packages () =
+    List.map before_space (split_nl & run_and_read "ocamlfind list")
+
+  (* this is supposed to list available syntaxes, but I don't know how to do it. *)
+  let find_syntaxes () = ["camlp4o"; "camlp4r"]
+
+  (* ocamlfind command *)
+  let ocamlfind x = S[A"ocamlfind"; x]
+
+  let dispatch =
+    function
+      | Before_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"
+                                  
+      | 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 ->
+              flag ["ocaml"; "compile";  "pkg_"^pkg] & S[A"-package"; A pkg];
+              flag ["ocaml"; "ocamldep"; "pkg_"^pkg] & S[A"-package"; A pkg];
+              flag ["ocaml"; "doc";      "pkg_"^pkg] & S[A"-package"; A pkg];
+              flag ["ocaml"; "link";     "pkg_"^pkg] & S[A"-package"; A pkg];
+              flag ["ocaml"; "infer_interface"; "pkg_"^pkg] & S[A"-package"; A pkg];
+            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"])
+
+      | _ -> 
+          ()
+
+end
+
+module MyOCamlbuildBase = struct
+(* # 21 "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 
+
+(* # 56 "src/plugins/ocamlbuild/MyOCamlbuildBase.ml" *)
+
+  type t =
+      {
+        lib_ocaml: (name * dir 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" 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, [] ->
+                     ocaml_lib nm
+                 | nm, dir :: tl ->
+                     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)
+              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
+                   flag tags & spec)
+              t.flags
+        | _ -> 
+            ()
+
+  let dispatch_default t =
+    dispatch_combine 
+      [
+        dispatch t;
+        MyOCamlbuildFindlib.dispatch;
+      ]
+
+end
+
+
+# 476 "myocamlbuild.ml"
+open Ocamlbuild_plugin;;
+let package_default =
+  {
+     MyOCamlbuildBase.lib_ocaml = [("cstruct_codegen", ["lib"])];
+     lib_c = [];
+     flags = [];
+     includes = [];
+     }
+  ;;
+
+let dispatch_default = MyOCamlbuildBase.dispatch_default package_default;;
+
+# 490 "myocamlbuild.ml"
+(* OASIS_STOP *)
+Ocamlbuild_plugin.dispatch dispatch_default;;
+(* setup.ml generated for the first time by OASIS v0.3.0 *)
+
+(* OASIS_START *)
+(* DO NOT EDIT (digest: 4e12860024a68f3fd424edd1089babf2) *)
+(*
+   Regenerated by OASIS v0.3.0
+   Visit http://oasis.forge.ocamlcore.org for more information and
+   documentation about functions used in this file.
+*)
+module OASISGettext = struct
+(* # 21 "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 OASISContext = struct
+(* # 21 "src/oasis/OASISContext.ml" *)
+
+  open OASISGettext
+
+  type level =
+    [ `Debug
+    | `Info
+    | `Warning
+    | `Error]
+
+  type t =
+    {
+      quiet:                 bool;
+      info:                  bool;
+      debug:                 bool;
+      ignore_plugins:        bool;
+      ignore_unknown_fields: bool;
+      printf:                level -> string -> unit;
+    }
+
+  let printf lvl str =
+    let beg =
+      match lvl with
+        | `Error -> s_ "E: "
+        | `Warning -> s_ "W: "
+        | `Info  -> s_ "I: "
+        | `Debug -> s_ "D: "
+    in
+      prerr_endline (beg^str)
+
+  let default =
+    ref
+      {
+        quiet                 = false;
+        info                  = false;
+        debug                 = false;
+        ignore_plugins        = false;
+        ignore_unknown_fields = false;
+        printf                = printf;
+      }
+
+  let quiet =
+    {!default with quiet = true}
+
+
+  let args () =
+    ["-quiet",
+     Arg.Unit (fun () -> default := {!default with quiet = true}),
+     (s_ " Run quietly");
+
+     "-info",
+     Arg.Unit (fun () -> default := {!default with info = true}),
+     (s_ " Display information message");
+
+
+     "-debug",
+     Arg.Unit (fun () -> default := {!default with debug = true}),
+     (s_ " Output debug message")]
+end
+
+module OASISString = struct
+(* # 1 "src/oasis/OASISString.ml" *)
+
+
+
+  (** Various string utilities.
+     
+      Mostly inspired by extlib and batteries ExtString and BatString libraries.
+
+      @author Sylvain Le Gall
+    *)
+
+  let nsplitf str f =
+    if str = "" then
+      []
+    else
+      let buf = Buffer.create 13 in
+      let lst = ref [] in
+      let push () =
+        lst := Buffer.contents buf :: !lst;
+        Buffer.clear buf
+      in
+      let str_len = String.length str in
+        for i = 0 to str_len - 1 do
+          if f str.[i] then
+            push ()
+          else
+            Buffer.add_char buf str.[i]
+        done;
+        push ();
+        List.rev !lst
+
+  (** [nsplit c s] Split the string [s] at char [c]. It doesn't include the
+      separator.
+    *)
+  let nsplit str c =
+    nsplitf str ((=) c)
+
+  let find ~what ?(offset=0) str =
+    let what_idx = ref 0 in
+    let str_idx = ref offset in 
+      while !str_idx < String.length str && 
+            !what_idx < String.length what do
+        if str.[!str_idx] = what.[!what_idx] then
+          incr what_idx
+        else
+          what_idx := 0;
+        incr str_idx
+      done;
+      if !what_idx <> String.length what then
+        raise Not_found
+      else 
+        !str_idx - !what_idx
+
+  let sub_start str len = 
+    let str_len = String.length str in
+    if len >= str_len then
+      ""
+    else
+      String.sub str len (str_len - len)
+
+  let sub_end ?(offset=0) str len =
+    let str_len = String.length str in
+    if len >= str_len then
+      ""
+    else
+      String.sub str 0 (str_len - len)
+
+  let starts_with ~what ?(offset=0) str =
+    let what_idx = ref 0 in
+    let str_idx = ref offset in
+    let ok = ref true in
+      while !ok &&
+            !str_idx < String.length str && 
+            !what_idx < String.length what do
+        if str.[!str_idx] = what.[!what_idx] then
+          incr what_idx
+        else
+          ok := false;
+        incr str_idx
+      done;
+      if !what_idx = String.length what then
+        true
+      else 
+        false
+
+  let strip_starts_with ~what str =
+    if starts_with ~what str then
+      sub_start str (String.length what)
+    else
+      raise Not_found
+
+  let ends_with ~what ?(offset=0) str =
+    let what_idx = ref ((String.length what) - 1) in
+    let str_idx = ref ((String.length str) - 1) in
+    let ok = ref true in
+      while !ok &&
+            offset <= !str_idx && 
+            0 <= !what_idx do
+        if str.[!str_idx] = what.[!what_idx] then
+          decr what_idx
+        else
+          ok := false;
+        decr str_idx
+      done;
+      if !what_idx = -1 then
+        true
+      else 
+        false
+
+  let strip_ends_with ~what str =
+    if ends_with ~what str then
+      sub_end str (String.length what)
+    else
+      raise Not_found
+
+  let replace_chars f s =
+    let buf = String.make (String.length s) 'X' in
+      for i = 0 to String.length s - 1 do
+        buf.[i] <- f s.[i]
+      done;
+      buf
+
+end
+
+module OASISUtils = struct
+(* # 21 "src/oasis/OASISUtils.ml" *)
+
+  open OASISGettext
+
+  module MapString = Map.Make(String)
+
+  let map_string_of_assoc assoc =
+    List.fold_left
+      (fun acc (k, v) -> MapString.add k v acc)
+      MapString.empty
+      assoc
+
+  module SetString = Set.Make(String)
+
+  let set_string_add_list st lst =
+    List.fold_left
+      (fun acc e -> SetString.add e acc)
+      st
+      lst
+
+  let set_string_of_list =
+    set_string_add_list
+      SetString.empty
+
+
+  let compare_csl s1 s2 =
+    String.compare (String.lowercase s1) (String.lowercase s2)
+
+  module HashStringCsl =
+    Hashtbl.Make
+      (struct
+         type t = string
+
+         let equal s1 s2 =
+             (String.lowercase s1) = (String.lowercase s2)
+
+         let hash s =
+           Hashtbl.hash (String.lowercase s)
+       end)
+
+  let varname_of_string ?(hyphen='_') s =
+    if String.length s = 0 then
+      begin
+        invalid_arg "varname_of_string"
+      end
+    else
+      begin
+        let buf =
+          OASISString.replace_chars
+            (fun c ->
+               if ('a' <= c && c <= 'z')
+                 ||
+                  ('A' <= c && c <= 'Z')
+                 ||
+                  ('0' <= c && c <= '9') then
+                 c
+               else
+                 hyphen)
+            s;
+        in
+        let buf =
+          (* Start with a _ if digit *)
+          if '0' <= s.[0] && s.[0] <= '9' then
+            "_"^buf
+          else
+            buf
+        in
+          String.lowercase buf
+      end
+
+  let varname_concat ?(hyphen='_') p s =
+    let what = String.make 1 hyphen in
+    let p =
+      try
+        OASISString.strip_ends_with ~what p
+      with Not_found ->
+        p
+    in
+    let s =
+      try
+        OASISString.strip_starts_with ~what s
+      with Not_found ->
+        s
+    in
+      p^what^s
+
+
+  let is_varname str =
+    str = varname_of_string str
+
+  let failwithf fmt = Printf.ksprintf failwith fmt
+
+end
+
+module PropList = struct
+(* # 21 "src/oasis/PropList.ml" *)
+
+  open OASISGettext
+
+  type name = string
+
+  exception Not_set of name * string option
+  exception No_printer of name
+  exception Unknown_field of name * name
+
+  let () =
+    Printexc.register_printer
+      (function
+         | Not_set (nm, Some rsn) ->
+             Some 
+               (Printf.sprintf (f_ "Field '%s' is not set: %s") nm rsn)
+         | Not_set (nm, None) ->
+             Some 
+               (Printf.sprintf (f_ "Field '%s' is not set") nm)
+         | No_printer nm ->
+             Some
+               (Printf.sprintf (f_ "No default printer for value %s") nm)
+         | Unknown_field (nm, schm) ->
+             Some 
+               (Printf.sprintf (f_ "Field %s is not defined in schema %s") nm schm)
+         | _ ->
+             None)
+
+  module Data =
+  struct
+
+    type t =
+        (name, unit -> unit) Hashtbl.t
+
+    let create () =
+      Hashtbl.create 13
+
+    let clear t =
+      Hashtbl.clear t
+
+(* # 71 "src/oasis/PropList.ml" *)
+  end
+
+  module Schema =
+  struct
+
+    type ('ctxt, 'extra) value =
+        {
+          get:   Data.t -> string;
+          set:   Data.t -> ?context:'ctxt -> string -> unit;
+          help:  (unit -> string) option;
+          extra: 'extra;
+        }
+
+    type ('ctxt, 'extra) t =
+        {
+          name:      name;
+          fields:    (name, ('ctxt, 'extra) value) Hashtbl.t;
+          order:     name Queue.t;
+          name_norm: string -> string;
+        }
+
+    let create ?(case_insensitive=false) nm =
+      {
+        name      = nm;
+        fields    = Hashtbl.create 13;
+        order     = Queue.create ();
+        name_norm =
+          (if case_insensitive then
+             String.lowercase
+           else
+             fun s -> s);
+      }
+
+    let add t nm set get extra help =
+      let key =
+        t.name_norm nm
+      in
+
+        if Hashtbl.mem t.fields key then
+          failwith
+            (Printf.sprintf
+               (f_ "Field '%s' is already defined in schema '%s'")
+               nm t.name);
+        Hashtbl.add
+          t.fields
+          key
+          {
+            set   = set;
+            get   = get;
+            help  = help;
+            extra = extra;
+          };
+        Queue.add nm t.order
+
+    let mem t nm =
+      Hashtbl.mem t.fields nm
+
+    let find t nm =
+      try
+        Hashtbl.find t.fields (t.name_norm nm)
+      with Not_found ->
+        raise (Unknown_field (nm, t.name))
+
+    let get t data nm =
+      (find t nm).get data
+
+    let set t data nm ?context x =
+      (find t nm).set
+        data
+        ?context
+        x
+
+    let fold f acc t =
+      Queue.fold
+        (fun acc k ->
+           let v =
+             find t k
+           in
+             f acc k v.extra v.help)
+        acc
+        t.order
+
+    let iter f t =
+      fold
+        (fun () -> f)
+        ()
+        t
+
+    let name t =
+      t.name
+  end
+
+  module Field =
+  struct
+
+    type ('ctxt, 'value, 'extra) t =
+        {
+          set:    Data.t -> ?context:'ctxt -> 'value -> unit;
+          get:    Data.t -> 'value;
+          sets:   Data.t -> ?context:'ctxt -> string -> unit;
+          gets:   Data.t -> string;
+          help:   (unit -> string) option;
+          extra:  'extra;
+        }
+
+    let new_id =
+      let last_id =
+        ref 0
+      in
+        fun () -> incr last_id; !last_id
+
+    let create ?schema ?name ?parse ?print ?default ?update ?help extra =
+      (* Default value container *)
+      let v =
+        ref None
+      in
+
+      (* If name is not given, create unique one *)
+      let nm =
+        match name with
+          | Some s -> s
+          | None -> Printf.sprintf "_anon_%d" (new_id ())
+      in
+
+      (* Last chance to get a value: the default *)
+      let default () =
+        match default with
+          | Some d -> d
+          | None -> raise (Not_set (nm, Some (s_ "no default value")))
+      in
+
+      (* Get data *)
+      let get data =
+        (* Get value *)
+        try
+          (Hashtbl.find data nm) ();
+          match !v with
+            | Some x -> x
+            | None -> default ()
+        with Not_found ->
+          default ()
+      in
+
+      (* Set data *)
+      let set data ?context x =
+        let x =
+          match update with
+            | Some f ->
+                begin
+                  try
+                    f ?context (get data) x
+                  with Not_set _ ->
+                    x
+                end
+            | None ->
+                x
+        in
+          Hashtbl.replace
+            data
+            nm
+            (fun () -> v := Some x)
+      in
+
+      (* Parse string value, if possible *)
+      let parse =
+        match parse with
+          | Some f ->
+              f
+          | None ->
+              fun ?context s ->
+                failwith
+                  (Printf.sprintf
+                     (f_ "Cannot parse field '%s' when setting value %S")
+                     nm
+                     s)
+      in
+
+      (* Set data, from string *)
+      let sets data ?context s =
+        set ?context data (parse ?context s)
+      in
+
+      (* Output value as string, if possible *)
+      let print =
+        match print with
+          | Some f ->
+              f
+          | None ->
+              fun _ -> raise (No_printer nm)
+      in
+
+      (* Get data, as a string *)
+      let gets data =
+        print (get data)
+      in
+
+        begin
+          match schema with
+            | Some t ->
+                Schema.add t nm sets gets extra help
+            | None ->
+                ()
+        end;
+
+        {
+          set   = set;
+          get   = get;
+          sets  = sets;
+          gets  = gets;
+          help  = help;
+          extra = extra;
+        }
+
+    let fset data t ?context x =
+      t.set data ?context x
+
+    let fget data t =
+      t.get data
+
+    let fsets data t ?context s =
+      t.sets data ?context s
+
+    let fgets data t =
+      t.gets data
+
+  end
+
+  module FieldRO =
+  struct
+
+    let create ?schema ?name ?parse ?print ?default ?update ?help extra =
+      let fld =
+        Field.create ?schema ?name ?parse ?print ?default ?update ?help extra
+      in
+        fun data -> Field.fget data fld
+
+  end
+end
+
+module OASISMessage = struct
+(* # 21 "src/oasis/OASISMessage.ml" *)
+
+
+  open OASISGettext
+  open OASISContext
+
+  let generic_message ~ctxt lvl fmt =
+    let cond =
+      if ctxt.quiet then
+        false
+      else
+        match lvl with
+          | `Debug -> ctxt.debug
+          | `Info  -> ctxt.info
+          | _ -> true
+    in
+      Printf.ksprintf
+        (fun str ->
+           if cond then
+             begin
+               ctxt.printf lvl str
+             end)
+        fmt
+
+  let debug ~ctxt fmt =
+    generic_message ~ctxt `Debug fmt
+
+  let info ~ctxt fmt =
+    generic_message ~ctxt `Info fmt
+
+  let warning ~ctxt fmt =
+    generic_message ~ctxt `Warning fmt
+
+  let error ~ctxt fmt =
+    generic_message ~ctxt `Error fmt
+
+end
+
+module OASISVersion = struct
+(* # 21 "src/oasis/OASISVersion.ml" *)
+
+  open OASISGettext
+
+
+
+  type s = string
+
+  type t = string 
+
+  type comparator =
+    | VGreater of t
+    | VGreaterEqual of t
+    | VEqual of t
+    | VLesser of t
+    | VLesserEqual of t
+    | VOr of  comparator * comparator
+    | VAnd of comparator * comparator
+    
+
+  (* Range of allowed characters *)
+  let is_digit c =
+    '0' <= c && c <= '9'
+
+  let is_alpha c =
+    ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')
+
+  let is_special =
+    function
+      | '.' | '+' | '-' | '~' -> true
+      | _ -> false
+
+  let rec version_compare v1 v2 =
+    if v1 <> "" || v2 <> "" then
+      begin
+        (* Compare ascii string, using special meaning for version
+         * related char
+         *)
+        let val_ascii c =
+          if c = '~' then -1
+          else if is_digit c then 0
+          else if c = '\000' then 0
+          else if is_alpha c then Char.code c
+          else (Char.code c) + 256
+        in
+
+        let len1 = String.length v1 in
+        let len2 = String.length v2 in
+
+        let p = ref 0 in
+
+        (** Compare ascii part *)
+        let compare_vascii () =
+          let cmp = ref 0 in
+          while !cmp = 0 &&
+                !p < len1 && !p < len2 &&
+                not (is_digit v1.[!p] && is_digit v2.[!p]) do
+            cmp := (val_ascii v1.[!p]) - (val_ascii v2.[!p]);
+            incr p
+          done;
+          if !cmp = 0 && !p < len1 && !p = len2 then
+            val_ascii v1.[!p]
+          else if !cmp = 0 && !p = len1 && !p < len2 then
+            - (val_ascii v2.[!p])
+          else
+            !cmp
+        in
+
+        (** Compare digit part *)
+        let compare_digit () =
+          let extract_int v p =
+            let start_p = !p in
+              while !p < String.length v && is_digit v.[!p] do
+                incr p
+              done;
+              let substr = 
+                String.sub v !p ((String.length v) - !p)
+              in 
+              let res = 
+                match String.sub v start_p (!p - start_p) with 
+                  | "" -> 0
+                  | s -> int_of_string s
+              in
+                res, substr
+          in
+          let i1, tl1 = extract_int v1 (ref !p) in
+          let i2, tl2 = extract_int v2 (ref !p) in
+            i1 - i2, tl1, tl2
+        in
+
+          match compare_vascii () with
+            | 0 ->
+                begin
+                  match compare_digit () with
+                    | 0, tl1, tl2 ->
+                        if tl1 <> "" && is_digit tl1.[0] then
+                          1
+                        else if tl2 <> "" && is_digit tl2.[0] then
+                          -1
+                        else
+                          version_compare tl1 tl2
+                    | n, _, _ ->
+                        n
+                end
+            | n ->
+                n
+      end
+    else
+      begin
+        0
+      end
+
+
+  let version_of_string str = str
+
+  let string_of_version t = t
+
+  let chop t =
+    try
+      let pos =
+        String.rindex t '.'
+      in
+        String.sub t 0 pos
+    with Not_found ->
+      t
+
+  let rec comparator_apply v op =
+    match op with
+      | VGreater cv ->
+          (version_compare v cv) > 0
+      | VGreaterEqual cv ->
+          (version_compare v cv) >= 0
+      | VLesser cv ->
+          (version_compare v cv) < 0
+      | VLesserEqual cv ->
+          (version_compare v cv) <= 0
+      | VEqual cv ->
+          (version_compare v cv) = 0
+      | VOr (op1, op2) ->
+          (comparator_apply v op1) || (comparator_apply v op2)
+      | VAnd (op1, op2) ->
+          (comparator_apply v op1) && (comparator_apply v op2)
+
+  let rec string_of_comparator =
+    function
+      | VGreater v  -> "> "^(string_of_version v)
+      | VEqual v    -> "= "^(string_of_version v)
+      | VLesser v   -> "< "^(string_of_version v)
+      | VGreaterEqual v -> ">= "^(string_of_version v)
+      | VLesserEqual v  -> "<= "^(string_of_version v)
+      | VOr (c1, c2)  ->
+          (string_of_comparator c1)^" || "^(string_of_comparator c2)
+      | VAnd (c1, c2) ->
+          (string_of_comparator c1)^" && "^(string_of_comparator c2)
+
+  let rec varname_of_comparator =
+    let concat p v =
+      OASISUtils.varname_concat
+        p
+        (OASISUtils.varname_of_string
+           (string_of_version v))
+    in
+      function
+        | VGreater v -> concat "gt" v
+        | VLesser v  -> concat "lt" v
+        | VEqual v   -> concat "eq" v
+        | VGreaterEqual v -> concat "ge" v
+        | VLesserEqual v  -> concat "le" v
+        | VOr (c1, c2) ->
+            (varname_of_comparator c1)^"_or_"^(varname_of_comparator c2)
+        | VAnd (c1, c2) ->
+            (varname_of_comparator c1)^"_and_"^(varname_of_comparator c2)
+
+  let version_0_3_or_after t =
+    comparator_apply t (VGreaterEqual (string_of_version "0.3"))
+
+end
+
+module OASISLicense = struct
+(* # 21 "src/oasis/OASISLicense.ml" *)
+
+  (** License for _oasis fields
+      @author Sylvain Le Gall
+    *)
+
+
+
+  type license = string 
+
+  type license_exception = string 
+
+  type license_version =
+    | Version of OASISVersion.t
+    | VersionOrLater of OASISVersion.t
+    | NoVersion
+    
+
+  type license_dep_5_unit =
+    {
+      license:   license;
+      excption:  license_exception option;
+      version:   license_version;
+    }
+    
+
+  type license_dep_5 =
+    | DEP5Unit of license_dep_5_unit
+    | DEP5Or of license_dep_5 list
+    | DEP5And of license_dep_5 list
+    
+
+  type t =
+    | DEP5License of license_dep_5
+    | OtherLicense of string (* URL *)
+    
+
+end
+
+module OASISExpr = struct
+(* # 21 "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
+
+module OASISTypes = struct
+(* # 21 "src/oasis/OASISTypes.ml" *)
+
+
+
+
+  type name          = string 
+  type package_name  = string 
+  type url           = string 
+  type unix_dirname  = string 
+  type unix_filename = string 
+  type host_dirname  = string 
+  type host_filename = string 
+  type prog          = string 
+  type arg           = string 
+  type args          = string list 
+  type command_line  = (prog * arg list) 
+
+  type findlib_name = string 
+  type findlib_full = string 
+
+  type compiled_object =
+    | Byte
+    | Native
+    | Best
+    
+
+  type dependency =
+    | FindlibPackage of findlib_full * OASISVersion.comparator option
+    | InternalLibrary of name
+    
+
+  type tool =
+    | ExternalTool of name
+    | InternalExecutable of name
+    
+
+  type vcs =
+    | Darcs
+    | Git
+    | Svn
+    | Cvs
+    | Hg
+    | Bzr
+    | Arch
+    | Monotone
+    | OtherVCS of url
+    
+
+  type plugin_kind =
+      [  `Configure
+       | `Build
+       | `Doc
+       | `Test
+       | `Install
+       | `Extra
+      ]
+
+  type plugin_data_purpose =
+      [  `Configure
+       | `Build
+       | `Install
+       | `Clean
+       | `Distclean
+       | `Install
+       | `Uninstall
+       | `Test
+       | `Doc
+       | `Extra
+       | `Other of string
+      ]
+
+  type 'a plugin = 'a * name * OASISVersion.t option 
+
+  type all_plugin = plugin_kind plugin
+
+  type plugin_data = (all_plugin * plugin_data_purpose * (unit -> unit)) list
+
+(* # 102 "src/oasis/OASISTypes.ml" *)
+
+  type 'a conditional = 'a OASISExpr.choices 
+
+  type custom =
+      {
+        pre_command:  (command_line option) conditional;
+        post_command: (command_line option) conditional;
+      }
+      
+
+  type common_section =
+      {
+        cs_name: name;
+        cs_data: PropList.Data.t;
+        cs_plugin_data: plugin_data;
+      }
+      
+
+  type build_section =
+      {
+        bs_build:           bool conditional;
+        bs_install:         bool conditional;
+        bs_path:            unix_dirname;
+        bs_compiled_object: compiled_object;
+        bs_build_depends:   dependency list;
+        bs_build_tools:     tool list;
+        bs_c_sources:       unix_filename list;
+        bs_data_files:      (unix_filename * unix_filename option) list;
+        bs_ccopt:           args conditional;
+        bs_cclib:           args conditional;
+        bs_dlllib:          args conditional;
+        bs_dllpath:         args conditional;
+        bs_byteopt:         args conditional;
+        bs_nativeopt:       args conditional;
+      }
+      
+
+  type library =
+      {
+        lib_modules:            string list;
+        lib_pack:               bool;
+        lib_internal_modules:   string list;
+        lib_findlib_parent:     findlib_name option;
+        lib_findlib_name:       findlib_name option;
+        lib_findlib_containers: findlib_name list;
+      } 
+
+  type executable =
+      {
+        exec_custom:          bool;
+        exec_main_is:         unix_filename;
+      } 
+
+  type flag =
+      {
+        flag_description:  string option;
+        flag_default:      bool conditional;
+      } 
+
+  type source_repository =
+      {
+        src_repo_type:        vcs;
+        src_repo_location:    url;
+        src_repo_browser:     url option;
+        src_repo_module:      string option;
+        src_repo_branch:      string option;
+        src_repo_tag:         string option;
+        src_repo_subdir:      unix_filename option;
+      } 
+
+  type test =
+      {
+        test_type:               [`Test] plugin;
+        test_command:            command_line conditional;
+        test_custom:             custom;
+        test_working_directory:  unix_filename option;
+        test_run:                bool conditional;
+        test_tools:              tool list;
+      } 
+
+  type doc_format =
+    | HTML of unix_filename
+    | DocText
+    | PDF
+    | PostScript
+    | Info of unix_filename
+    | DVI
+    | OtherDoc
+    
+
+  type doc =
+      {
+        doc_type:        [`Doc] plugin;
+        doc_custom:      custom;
+        doc_build:       bool conditional;
+        doc_install:     bool conditional;
+        doc_install_dir: unix_filename;
+        doc_title:       string;
+        doc_authors:     string list;
+        doc_abstract:    string option;
+        doc_format:      doc_format;
+        doc_data_files:  (unix_filename * unix_filename option) list;
+        doc_build_tools: tool list;
+      } 
+
+  type section =
+    | Library    of common_section * build_section * library
+    | Executable of common_section * build_section * executable
+    | Flag       of common_section * flag
+    | SrcRepo    of common_section * source_repository
+    | Test       of common_section * test
+    | Doc        of common_section * doc
+    
+
+  type section_kind =
+      [ `Library | `Executable | `Flag | `SrcRepo | `Test | `Doc ]
+
+  type package = 
+      {
+        oasis_version:    OASISVersion.t;
+        ocaml_version:    OASISVersion.comparator option;
+        findlib_version:  OASISVersion.comparator option;
+        name:             package_name;
+        version:          OASISVersion.t;
+        license:          OASISLicense.t;
+        license_file:     unix_filename option;
+        copyrights:       string list;
+        maintainers:      string list;
+        authors:          string list;
+        homepage:         url option;
+        synopsis:         string;
+        description:      string option;
+        categories:       url list;
+
+        conf_type:        [`Configure] plugin;
+        conf_custom:      custom;
+
+        build_type:       [`Build] plugin;
+        build_custom:     custom;
+
+        install_type:     [`Install] plugin;
+        install_custom:   custom;
+        uninstall_custom: custom;
+
+        clean_custom:     custom;
+        distclean_custom: custom;
+
+        files_ab:         unix_filename list;
+        sections:         section list;
+        plugins:          [`Extra] plugin list;
+        schema_data:      PropList.Data.t;
+        plugin_data:      plugin_data;
+      } 
+
+end
+
+module OASISUnixPath = struct
+(* # 21 "src/oasis/OASISUnixPath.ml" *)
+
+  type unix_filename = string
+  type unix_dirname = string
+
+  type host_filename = string
+  type host_dirname = string
+
+  let current_dir_name = "."
+
+  let parent_dir_name = ".."
+
+  let is_current_dir fn =
+    fn = current_dir_name || fn = ""
+
+  let concat f1 f2 =
+    if is_current_dir f1 then
+      f2
+    else
+      let f1' =
+        try OASISString.strip_ends_with ~what:"/" f1 with Not_found -> f1
+      in
+        f1'^"/"^f2
+
+  let make =
+    function
+      | hd :: tl ->
+          List.fold_left
+            (fun f p -> concat f p)
+            hd
+            tl
+      | [] ->
+          invalid_arg "OASISUnixPath.make"
+
+  let dirname f =
+    try
+      String.sub f 0 (String.rindex f '/')
+    with Not_found ->
+      current_dir_name
+
+  let basename f =
+    try
+      let pos_start =
+        (String.rindex f '/') + 1
+      in
+        String.sub f pos_start ((String.length f) - pos_start)
+    with Not_found ->
+      f
+
+  let chop_extension f =
+    try
+      let last_dot =
+        String.rindex f '.'
+      in
+      let sub =
+        String.sub f 0 last_dot
+      in
+        try
+          let last_slash =
+            String.rindex f '/'
+          in
+            if last_slash < last_dot then
+              sub
+            else
+              f
+        with Not_found ->
+          sub
+
+    with Not_found ->
+      f
+
+  let capitalize_file f =
+    let dir = dirname f in
+    let base = basename f in
+    concat dir (String.capitalize base)
+
+  let uncapitalize_file f =
+    let dir = dirname f in
+    let base = basename f in
+    concat dir (String.uncapitalize base)
+
+end
+
+module OASISHostPath = struct
+(* # 21 "src/oasis/OASISHostPath.ml" *)
+
+
+  open Filename
+
+  module Unix = OASISUnixPath
+
+  let make =
+    function
+      | [] ->
+          invalid_arg "OASISHostPath.make"
+      | hd :: tl ->
+          List.fold_left Filename.concat hd tl
+
+  let of_unix ufn =
+    if Sys.os_type = "Unix" then
+      ufn
+    else
+      make
+        (List.map
+           (fun p ->
+              if p = Unix.current_dir_name then
+                current_dir_name
+              else if p = Unix.parent_dir_name then
+                parent_dir_name
+              else
+                p)
+           (OASISString.nsplit ufn '/'))
+
+
+end
+
+module OASISSection = struct
+(* # 21 "src/oasis/OASISSection.ml" *)
+
+  open OASISTypes
+
+  let section_kind_common = 
+    function
+      | Library (cs, _, _) -> 
+          `Library, cs
+      | Executable (cs, _, _) ->
+          `Executable, cs
+      | Flag (cs, _) ->
+          `Flag, cs
+      | SrcRepo (cs, _) ->
+          `SrcRepo, cs
+      | Test (cs, _) ->
+          `Test, cs
+      | Doc (cs, _) ->
+          `Doc, cs
+