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|
(* *********************************************************************)
(* *)
(* The Compcert verified compiler *)
(* *)
(* Xavier Leroy, INRIA Paris-Rocquencourt *)
(* *)
(* Copyright Institut National de Recherche en Informatique et en *)
(* Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU General Public License as published by *)
(* the Free Software Foundation, either version 2 of the License, or *)
(* (at your option) any later version. This file is also distributed *)
(* under the terms of the INRIA Non-Commercial License Agreement. *)
(* *)
(* *********************************************************************)
(* Wrapper around gcc to parse, transform, pretty-print, and call gcc on result *)
let transfs = ref ""
let safe_remove name =
try Sys.remove name with Sys_error _ -> ()
let process_c_file prepro_opts name =
let ppname = Filename.temp_file "cparser" ".i" in
let cpname = Filename.chop_suffix name ".c" ^ ".i" in
let rc =
Sys.command
(Printf.sprintf "gcc -E -U__GNUC__ %s %s > %s"
(String.concat " " (List.map Filename.quote prepro_opts))
(Filename.quote name) (Filename.quote ppname)) in
if rc <> 0 then begin
safe_remove ppname;
exit 2
end;
let r = Parse.preprocessed_file !transfs name ppname in
safe_remove ppname;
match r with
| None -> exit 2
| Some p ->
let oc = open_out cpname in
let oform = Format.formatter_of_out_channel oc in
Cprint.program oform p;
close_out oc;
cpname
let starts_with pref s =
String.length s >= String.length pref
&& String.sub s 0 (String.length pref) = pref
let ends_with suff s =
String.length s >= String.length suff
&& String.sub s (String.length s - String.length suff) (String.length suff)
= suff
let rec parse_cmdline prepro args i =
if i >= Array.length Sys.argv then List.rev args else begin
(* should skip arguments more cleanly... *)
let s = Sys.argv.(i) in
if s = "-Xsimplif" && i + 1 < Array.length Sys.argv then begin
transfs := Sys.argv.(i+1);
parse_cmdline prepro args (i+2)
end else if (s = "-I" || s = "-D" || s = "-U")
&& i + 1 < Array.length Sys.argv then
parse_cmdline (Sys.argv.(i+1) :: s :: prepro) args (i+2)
else if starts_with "-I" s
|| starts_with "-D" s
|| starts_with "-U" s then
parse_cmdline (s :: prepro) args (i + 1)
else if s = "-Wall" then
parse_cmdline prepro ("-Wno-parentheses" :: "-Wall" :: args) (i+1)
else if ends_with ".c" s then begin
let s' = process_c_file (List.rev prepro) s in
parse_cmdline prepro (s' :: args) (i + 1)
end else
parse_cmdline prepro (s :: args) (i + 1)
end
let _ =
Builtins.set GCC.builtins;
let args = parse_cmdline [] [] 1 in
let cmd = "gcc " ^ String.concat " " (List.map Filename.quote args) in
let rc = Sys.command cmd in
exit rc
|
