--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/s-resfil.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,99 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--                  S Y S T E M . R E S P O N S E _ F I L E                 --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2007-2017, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides facilities for getting command-line arguments from
+--  a text file, called a "response file".
+--
+--  Using a response file allow passing a set of arguments to an executable
+--  longer than the maximum allowed by the system on the command line.
+
+pragma Compiler_Unit_Warning;
+
+with System.Strings;
+
+package System.Response_File is
+
+   subtype String_Access is System.Strings.String_Access;
+   --  type String_Access is access all String;
+
+   procedure Free (S : in out String_Access) renames System.Strings.Free;
+   --  To deallocate a String
+
+   subtype Argument_List is System.Strings.String_List;
+   --  type String_List is array (Positive range <>) of String_Access;
+
+   Max_Line_Length : constant := 4096;
+   --  The maximum length of lines in a response file
+
+   File_Does_Not_Exist : exception;
+   --  Raise by Arguments_From when a response file cannot be found
+
+   Line_Too_Long : exception;
+   --  Raise by Arguments_From when a line in the response file is longer than
+   --  Max_Line_Length.
+
+   No_Closing_Quote : exception;
+   --  Raise by Arguments_From when a quoted string does not end before the
+   --  end of the line.
+
+   Circularity_Detected : exception;
+   --  Raise by Arguments_From when Recursive is True and the same response
+   --  file is reading itself, either directly or indirectly.
+
+   function Arguments_From
+     (Response_File_Name        : String;
+      Recursive                 : Boolean := False;
+      Ignore_Non_Existing_Files : Boolean := False)
+      return Argument_List;
+   --  Read response file with name Response_File_Name and return the argument
+   --  it contains as an Argument_List. It is the responsibility of the caller
+   --  to deallocate the strings in the Argument_List if desired. When
+   --  Recursive is True, any argument of the form @file_name indicates the
+   --  name of another response file and is replaced by the arguments in this
+   --  response file.
+   --
+   --  Each nonempty line of the response file contains one or several
+   --  arguments separated by white space. Empty lines or lines containing only
+   --  white space are ignored. Arguments containing white space or a double
+   --  quote ('"')must be quoted. A double quote inside a quote string is
+   --  indicated by two consecutive double quotes. Example: "-Idir with quote
+   --  "" and spaces". Non-white-space characters immediately before or after a
+   --  quoted string are part of the same argument. Ex: -Idir" with "spaces
+   --
+   --  When a response file cannot be found, exception File_Does_Not_Exist is
+   --  raised if Ignore_Non_Existing_Files is False, otherwise the response
+   --  file is ignored. Exception Line_Too_Long is raised when a line of a
+   --  response file is longer than Max_Line_Length. Exception No_Closing_Quote
+   --  is raised when a quoted argument is not closed before the end of the
+   --  line. Exception Circularity_Detected is raised when a Recursive is True
+   --  and a response file is reading itself, either directly or indirectly.
+
+end System.Response_File;