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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Util
open Nativevalues
open Nativecode
open CErrors
open Envars
(** This file provides facilities to access OCaml compiler and dynamic linker,
used by the native compiler. *)
let get_load_paths =
ref (fun _ -> anomaly (Pp.str "get_load_paths not initialized.") : unit -> string list)
let open_header = ["Nativevalues";
"Nativecode";
"Nativelib";
"Nativeconv";
"Declaremods"]
let open_header = List.map mk_open open_header
(* Directory where compiled files are stored *)
let output_dir = ".coq-native"
(* Extension of genereted ml files, stored for debugging purposes *)
let source_ext = ".native"
let ( / ) = Filename.concat
(* We have to delay evaluation of include_dirs because coqlib cannot be guessed
until flags have been properly initialized *)
let include_dirs () =
[Filename.get_temp_dir_name (); coqlib () / "kernel"; coqlib () / "library"]
(* Pointer to the function linking an ML object into coq's toplevel *)
let load_obj = ref (fun x -> () : string -> unit)
let rt1 = ref (dummy_value ())
let rt2 = ref (dummy_value ())
let get_ml_filename () =
let filename = Filename.temp_file "Coq_native" source_ext in
let prefix = Filename.chop_extension (Filename.basename filename) ^ "." in
filename, prefix
let write_ml_code fn ?(header=[]) code =
let header = open_header@header in
let ch_out = open_out fn in
let fmt = Format.formatter_of_out_channel ch_out in
List.iter (pp_global fmt) (header@code);
close_out ch_out
let warn_native_compiler_failed =
let print = function
| Inl (Unix.WEXITED n) -> Pp.(strbrk "Native compiler exited with status" ++ str" " ++ int n)
| Inl (Unix.WSIGNALED n) -> Pp.(strbrk "Native compiler killed by signal" ++ str" " ++ int n)
| Inl (Unix.WSTOPPED n) -> Pp.(strbrk "Native compiler stopped by signal" ++ str" " ++ int n)
| Inr e -> Pp.(strbrk "Native compiler failed with error: " ++ strbrk (Unix.error_message e))
in
CWarnings.create ~name:"native-compiler-failed" ~category:"native-compiler" print
let call_compiler ?profile:(profile=false) ml_filename =
let load_path = !get_load_paths () in
let load_path = List.map (fun dn -> dn / output_dir) load_path in
let include_dirs = List.flatten (List.map (fun x -> ["-I"; x]) (include_dirs () @ load_path)) in
let f = Filename.chop_extension ml_filename in
let link_filename = f ^ ".cmo" in
let link_filename = Dynlink.adapt_filename link_filename in
let remove f = if Sys.file_exists f then Sys.remove f in
remove link_filename;
remove (f ^ ".cmi");
let initial_args =
if Dynlink.is_native then
["opt"; "-shared"]
else
["ocamlc"; "-c"]
in
let profile_args =
if profile then
["-g"]
else
[]
in
let flambda_args =
if Coq_config.caml_version_nums >= [4;3;0] && Dynlink.is_native then
(* We play safe for now, and use the native compiler
with -Oclassic, however it is likely that `native_compute`
users can benefit from tweaking here.
*)
["-Oclassic"]
else
[]
in
let args =
initial_args @
profile_args @
flambda_args @
("-o"::link_filename
::"-rectypes"
::"-w"::"a"
::include_dirs) @
["-impl"; ml_filename] in
if !Flags.debug then Feedback.msg_debug (Pp.str (ocamlfind () ^ " " ^ (String.concat " " args)));
try
let res = CUnix.sys_command (ocamlfind ()) args in
let res = match res with
| Unix.WEXITED 0 -> true
| Unix.WEXITED n | Unix.WSIGNALED n | Unix.WSTOPPED n ->
warn_native_compiler_failed (Inl res); false
in
res, link_filename
with Unix.Unix_error (e,_,_) ->
warn_native_compiler_failed (Inr e);
false, link_filename
let compile fn code ~profile:profile =
write_ml_code fn code;
let r = call_compiler ~profile fn in
if (not !Flags.debug) && Sys.file_exists fn then Sys.remove fn;
r
let compile_library dir code fn =
let header = mk_library_header dir in
let fn = fn ^ source_ext in
let basename = Filename.basename fn in
let dirname = Filename.dirname fn in
let dirname = dirname / output_dir in
let () =
try Unix.mkdir dirname 0o755
with Unix.Unix_error (Unix.EEXIST, _, _) -> ()
in
let fn = dirname / basename in
write_ml_code fn ~header code;
let r = fst (call_compiler fn) in
if (not !Flags.debug) && Sys.file_exists fn then Sys.remove fn;
r
(* call_linker links dynamically the code for constants in environment or a *)
(* conversion test. *)
let call_linker ?(fatal=true) prefix f upds =
rt1 := dummy_value ();
rt2 := dummy_value ();
if not (Sys.file_exists f) then
begin
let msg = "Cannot find native compiler file " ^ f in
if fatal then CErrors.user_err Pp.(str msg)
else if !Flags.debug then Feedback.msg_debug (Pp.str msg)
end
else
(try
if Dynlink.is_native then Dynlink.loadfile f else !load_obj f;
register_native_file prefix
with Dynlink.Error e as exn ->
let exn = CErrors.push exn in
if fatal then iraise exn
else if !Flags.debug then Feedback.msg_debug CErrors.(iprint exn));
match upds with Some upds -> update_locations upds | _ -> ()
let link_library ~prefix ~dirname ~basename =
let f = dirname / output_dir / basename in
call_linker ~fatal:false prefix f None
|
