mirror of git://gcc.gnu.org/git/gcc.git
639 lines
20 KiB
Ada
639 lines
20 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- M L I B . U T L --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2002-2013, AdaCore --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with MLib.Fil; use MLib.Fil;
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with MLib.Tgt; use MLib.Tgt;
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with Opt;
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with Osint;
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with Output; use Output;
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with Interfaces.C.Strings; use Interfaces.C.Strings;
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package body MLib.Utl is
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Adalib_Path : String_Access := null;
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-- Path of the GNAT adalib directory, specified in procedure
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-- Specify_Adalib_Dir. Used in function Lib_Directory.
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Gcc_Name : String_Access;
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-- Default value of the "gcc" executable used in procedure Gcc
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Gcc_Exec : String_Access;
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-- The full path name of the "gcc" executable
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Ar_Name : String_Access;
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-- The name of the archive builder for the platform, set when procedure Ar
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-- is called for the first time.
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Ar_Exec : String_Access;
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-- The full path name of the archive builder
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Ar_Options : String_List_Access;
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-- The minimum options used when invoking the archive builder
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Ar_Append_Options : String_List_Access;
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-- The options to be used when invoking the archive builder to add chunks
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-- of object files, when building the archive in chunks.
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Opt_Length : Natural := 0;
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-- The max number of options for the Archive_Builder
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Initial_Size : Natural := 0;
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-- The minimum number of bytes for the invocation of the Archive Builder
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-- (without name of the archive or object files).
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Ranlib_Name : String_Access;
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-- The name of the archive indexer for the platform, if there is one
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Ranlib_Exec : String_Access := null;
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-- The full path name of the archive indexer
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Ranlib_Options : String_List_Access := null;
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-- The options to be used when invoking the archive indexer, if any
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--------
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-- Ar --
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--------
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procedure Ar (Output_File : String; Objects : Argument_List) is
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Full_Output_File : constant String :=
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Ext_To (Output_File, Archive_Ext);
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Arguments : Argument_List_Access;
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Last_Arg : Natural := 0;
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Success : Boolean;
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Line_Length : Natural := 0;
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Maximum_Size : Integer;
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pragma Import (C, Maximum_Size, "__gnat_link_max");
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-- Maximum number of bytes to put in an invocation of the
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-- Archive_Builder.
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Size : Integer;
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-- The number of bytes for the invocation of the archive builder
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Current_Object : Natural;
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procedure Display;
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-- Display an invocation of the Archive Builder
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-------------
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-- Display --
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-------------
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procedure Display is
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begin
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if not Opt.Quiet_Output then
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Write_Str (Ar_Name.all);
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Line_Length := Ar_Name'Length;
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for J in 1 .. Last_Arg loop
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-- Make sure the Output buffer does not overflow
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if Line_Length + 1 + Arguments (J)'Length > Buffer_Max then
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Write_Eol;
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Line_Length := 0;
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end if;
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Write_Char (' ');
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-- Only output the first object files when not in verbose mode
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if (not Opt.Verbose_Mode) and then J = Opt_Length + 3 then
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Write_Str ("...");
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exit;
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end if;
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Write_Str (Arguments (J).all);
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Line_Length := Line_Length + 1 + Arguments (J)'Length;
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end loop;
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Write_Eol;
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end if;
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end Display;
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begin
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if Ar_Exec = null then
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Ar_Name := Osint.Program_Name (Archive_Builder, "gnatmake");
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Ar_Exec := Locate_Exec_On_Path (Ar_Name.all);
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if Ar_Exec = null then
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Free (Ar_Name);
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Ar_Name := new String'(Archive_Builder);
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Ar_Exec := Locate_Exec_On_Path (Ar_Name.all);
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end if;
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if Ar_Exec = null then
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Fail (Ar_Name.all & " not found in path");
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elsif Opt.Verbose_Mode then
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Write_Str ("found ");
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Write_Line (Ar_Exec.all);
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end if;
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Ar_Options := Archive_Builder_Options;
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Initial_Size := 0;
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for J in Ar_Options'Range loop
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Initial_Size := Initial_Size + Ar_Options (J)'Length + 1;
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end loop;
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Ar_Append_Options := Archive_Builder_Append_Options;
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Opt_Length := Ar_Options'Length;
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if Ar_Append_Options /= null then
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Opt_Length := Natural'Max (Ar_Append_Options'Length, Opt_Length);
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Size := 0;
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for J in Ar_Append_Options'Range loop
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Size := Size + Ar_Append_Options (J)'Length + 1;
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end loop;
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Initial_Size := Integer'Max (Initial_Size, Size);
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end if;
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-- ranlib
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Ranlib_Name := Osint.Program_Name (Archive_Indexer, "gnatmake");
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if Ranlib_Name'Length > 0 then
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Ranlib_Exec := Locate_Exec_On_Path (Ranlib_Name.all);
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if Ranlib_Exec = null then
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Free (Ranlib_Name);
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Ranlib_Name := new String'(Archive_Indexer);
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Ranlib_Exec := Locate_Exec_On_Path (Ranlib_Name.all);
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end if;
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if Ranlib_Exec /= null and then Opt.Verbose_Mode then
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Write_Str ("found ");
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Write_Line (Ranlib_Exec.all);
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end if;
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end if;
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Ranlib_Options := Archive_Indexer_Options;
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end if;
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Arguments :=
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new String_List (1 .. 1 + Opt_Length + Objects'Length);
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Arguments (1 .. Ar_Options'Length) := Ar_Options.all; -- "ar cr ..."
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Arguments (Ar_Options'Length + 1) := new String'(Full_Output_File);
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Delete_File (Full_Output_File);
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Size := Initial_Size + Full_Output_File'Length + 1;
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-- Check the full size of a call of the archive builder with all the
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-- object files.
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for J in Objects'Range loop
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Size := Size + Objects (J)'Length + 1;
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end loop;
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-- If the size is not too large or if it is not possible to build the
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-- archive in chunks, build the archive in a single invocation.
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if Size <= Maximum_Size or else Ar_Append_Options = null then
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Last_Arg := Ar_Options'Length + 1 + Objects'Length;
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Arguments (Ar_Options'Length + 2 .. Last_Arg) := Objects;
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Display;
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Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
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else
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-- Build the archive in several invocation, making sure to not
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-- go over the maximum size for each invocation.
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Last_Arg := Ar_Options'Length + 1;
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Current_Object := Objects'First;
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Size := Initial_Size + Full_Output_File'Length + 1;
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-- First invocation
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while Current_Object <= Objects'Last loop
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Size := Size + Objects (Current_Object)'Length + 1;
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exit when Size > Maximum_Size;
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Last_Arg := Last_Arg + 1;
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Arguments (Last_Arg) := Objects (Current_Object);
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Current_Object := Current_Object + 1;
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end loop;
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Display;
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Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
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Arguments (1 .. Ar_Append_Options'Length) := Ar_Append_Options.all;
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Arguments
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(Ar_Append_Options'Length + 1) := new String'(Full_Output_File);
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-- Appending invocation(s)
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Big_Loop : while Success and then Current_Object <= Objects'Last loop
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Last_Arg := Ar_Append_Options'Length + 1;
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Size := Initial_Size + Full_Output_File'Length + 1;
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Inner_Loop : while Current_Object <= Objects'Last loop
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Size := Size + Objects (Current_Object)'Length + 1;
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exit Inner_Loop when Size > Maximum_Size;
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Last_Arg := Last_Arg + 1;
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Arguments (Last_Arg) := Objects (Current_Object);
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Current_Object := Current_Object + 1;
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end loop Inner_Loop;
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Display;
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Spawn (Ar_Exec.all, Arguments (1 .. Last_Arg), Success);
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end loop Big_Loop;
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end if;
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if not Success then
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Fail (Ar_Name.all & " execution error.");
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end if;
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-- If we have found ranlib, run it over the library
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if Ranlib_Exec /= null then
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if not Opt.Quiet_Output then
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Write_Str (Ranlib_Name.all);
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Write_Char (' ');
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Write_Line (Arguments (Ar_Options'Length + 1).all);
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end if;
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Spawn
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(Ranlib_Exec.all,
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Ranlib_Options.all & (Arguments (Ar_Options'Length + 1)),
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Success);
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if not Success then
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Fail (Ranlib_Name.all & " execution error.");
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end if;
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end if;
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end Ar;
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-----------------
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-- Delete_File --
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-----------------
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procedure Delete_File (Filename : String) is
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File : constant String := Filename & ASCII.NUL;
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Success : Boolean;
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begin
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Delete_File (File'Address, Success);
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if Opt.Verbose_Mode then
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if Success then
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Write_Str ("deleted ");
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else
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Write_Str ("could not delete ");
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end if;
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Write_Line (Filename);
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end if;
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end Delete_File;
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---------
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-- Gcc --
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---------
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procedure Gcc
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(Output_File : String;
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Objects : Argument_List;
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Options : Argument_List;
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Options_2 : Argument_List;
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Driver_Name : Name_Id := No_Name)
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is
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Link_Bytes : Integer := 0;
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-- Projected number of bytes for the linker command line
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Link_Max : Integer;
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pragma Import (C, Link_Max, "__gnat_link_max");
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-- Maximum number of bytes on the command line supported by the OS
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-- linker. Passed this limit the response file mechanism must be used
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-- if supported.
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Object_List_File_Supported : Boolean;
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for Object_List_File_Supported'Size use Character'Size;
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pragma Import
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(C, Object_List_File_Supported, "__gnat_objlist_file_supported");
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-- Predicate indicating whether the linker has an option whereby the
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-- names of object files can be passed to the linker in a file.
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Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr;
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pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option");
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-- Pointer to a string representing the linker option which specifies
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-- the response file.
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Object_File_Option : constant String := Value (Object_File_Option_Ptr);
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-- The linker option which specifies the response file as a string
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Using_GNU_response_file : constant Boolean :=
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Object_File_Option'Length > 0
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and then
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Object_File_Option
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(Object_File_Option'Last) = '@';
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-- Whether a GNU response file is used
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Tname : String_Access;
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Tname_FD : File_Descriptor := Invalid_FD;
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-- Temporary file used by linker to pass list of object files on
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-- certain systems with limitations on size of arguments.
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Closing_Status : Boolean;
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-- For call to Close
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Arguments :
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Argument_List
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(1 .. 7 + Objects'Length + Options'Length + Options_2'Length);
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A : Natural := 0;
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Success : Boolean;
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Out_Opt : constant String_Access := new String'("-o");
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Out_V : constant String_Access := new String'(Output_File);
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Lib_Dir : constant String_Access := new String'("-L" & Lib_Directory);
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Lib_Opt : constant String_Access := new String'(Dynamic_Option);
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Driver : String_Access;
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type Object_Position is (First, Second, Last);
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Position : Object_Position;
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procedure Write_RF (S : String);
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-- Write a string to the response file and check if it was successful.
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-- Fail the program if it was not successful (disk full).
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--------------
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-- Write_RF --
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--------------
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procedure Write_RF (S : String) is
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Success : Boolean := True;
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Back_Slash : constant Character := '\';
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begin
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-- If a GNU response file is used, space and backslash need to be
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-- escaped because they are interpreted as a string separator and
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-- an escape character respectively by the underlying mechanism.
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-- On the other hand, quote and double-quote are not escaped since
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-- they are interpreted as string delimiters on both sides.
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if Using_GNU_response_file then
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for J in S'Range loop
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if S (J) = ' ' or else S (J) = '\' then
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if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
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Success := False;
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end if;
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end if;
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if Write (Tname_FD, S (J)'Address, 1) /= 1 then
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Success := False;
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end if;
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end loop;
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else
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if Write (Tname_FD, S'Address, S'Length) /= S'Length then
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Success := False;
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end if;
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end if;
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if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
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Success := False;
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end if;
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if not Success then
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Fail ("cannot generate response file to link library: disk full");
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end if;
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end Write_RF;
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-- Start of processing for Gcc
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begin
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if Driver_Name = No_Name then
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if Gcc_Exec = null then
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if Gcc_Name = null then
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Gcc_Name := Osint.Program_Name ("gcc", "gnatmake");
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end if;
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Gcc_Exec := Locate_Exec_On_Path (Gcc_Name.all);
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if Gcc_Exec = null then
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Fail (Gcc_Name.all & " not found in path");
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end if;
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end if;
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Driver := Gcc_Exec;
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else
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Driver := Locate_Exec_On_Path (Get_Name_String (Driver_Name));
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if Driver = null then
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Fail (Get_Name_String (Driver_Name) & " not found in path");
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end if;
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end if;
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Link_Bytes := 0;
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if Lib_Opt'Length /= 0 then
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A := A + 1;
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Arguments (A) := Lib_Opt;
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Link_Bytes := Link_Bytes + Lib_Opt'Length + 1;
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end if;
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A := A + 1;
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Arguments (A) := Out_Opt;
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Link_Bytes := Link_Bytes + Out_Opt'Length + 1;
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A := A + 1;
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Arguments (A) := Out_V;
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Link_Bytes := Link_Bytes + Out_V'Length + 1;
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A := A + 1;
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Arguments (A) := Lib_Dir;
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Link_Bytes := Link_Bytes + Lib_Dir'Length + 1;
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A := A + Options'Length;
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Arguments (A - Options'Length + 1 .. A) := Options;
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for J in Options'Range loop
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Link_Bytes := Link_Bytes + Options (J)'Length + 1;
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end loop;
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if not Opt.Quiet_Output then
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if Opt.Verbose_Mode then
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Write_Str (Driver.all);
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elsif Driver_Name /= No_Name then
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Write_Str (Get_Name_String (Driver_Name));
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else
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Write_Str (Gcc_Name.all);
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end if;
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for J in 1 .. A loop
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if Opt.Verbose_Mode or else J < 4 then
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Write_Char (' ');
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Write_Str (Arguments (J).all);
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else
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Write_Str (" ...");
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exit;
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end if;
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end loop;
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-- Do not display all the object files if not in verbose mode, only
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-- the first one.
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Position := First;
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for J in Objects'Range loop
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if Opt.Verbose_Mode or else Position = First then
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Write_Char (' ');
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Write_Str (Objects (J).all);
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Position := Second;
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elsif Position = Second then
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Write_Str (" ...");
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Position := Last;
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exit;
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end if;
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end loop;
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for J in Options_2'Range loop
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if not Opt.Verbose_Mode then
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if Position = Second then
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Write_Str (" ...");
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end if;
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exit;
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end if;
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Write_Char (' ');
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Write_Str (Options_2 (J).all);
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end loop;
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Write_Eol;
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end if;
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for J in Objects'Range loop
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Link_Bytes := Link_Bytes + Objects (J)'Length + 1;
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end loop;
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for J in Options_2'Range loop
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Link_Bytes := Link_Bytes + Options_2 (J)'Length + 1;
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end loop;
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if Object_List_File_Supported and then Link_Bytes > Link_Max then
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-- Create a temporary file containing the object files, one object
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-- file per line for maximal compatibility with linkers supporting
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-- this option.
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Create_Temp_File (Tname_FD, Tname);
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for J in Objects'Range loop
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Write_RF (Objects (J).all);
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end loop;
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Close (Tname_FD, Closing_Status);
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if not Closing_Status then
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Fail ("cannot generate response file to link library: disk full");
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end if;
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|
|
|
A := A + 1;
|
|
Arguments (A) := new String'(Object_File_Option & Tname.all);
|
|
|
|
else
|
|
A := A + Objects'Length;
|
|
Arguments (A - Objects'Length + 1 .. A) := Objects;
|
|
end if;
|
|
|
|
A := A + Options_2'Length;
|
|
Arguments (A - Options_2'Length + 1 .. A) := Options_2;
|
|
|
|
Spawn (Driver.all, Arguments (1 .. A), Success);
|
|
|
|
if Success then
|
|
-- Delete the temporary file used in conjunction with linking
|
|
-- if one was created.
|
|
|
|
if Tname_FD /= Invalid_FD then
|
|
Delete_File (Tname.all);
|
|
end if;
|
|
|
|
else
|
|
if Driver_Name = No_Name then
|
|
Fail (Gcc_Name.all & " execution error");
|
|
else
|
|
Fail (Get_Name_String (Driver_Name) & " execution error");
|
|
end if;
|
|
end if;
|
|
end Gcc;
|
|
|
|
-------------------
|
|
-- Lib_Directory --
|
|
-------------------
|
|
|
|
function Lib_Directory return String is
|
|
Libgnat : constant String := Tgt.Libgnat;
|
|
|
|
begin
|
|
-- If procedure Specify_Adalib_Dir has been called, used the specified
|
|
-- value.
|
|
|
|
if Adalib_Path /= null then
|
|
return Adalib_Path.all;
|
|
end if;
|
|
|
|
Name_Len := Libgnat'Length;
|
|
Name_Buffer (1 .. Name_Len) := Libgnat;
|
|
Get_Name_String (Osint.Find_File (Name_Enter, Osint.Library));
|
|
|
|
-- Remove libgnat.a
|
|
|
|
return Name_Buffer (1 .. Name_Len - Libgnat'Length);
|
|
end Lib_Directory;
|
|
|
|
------------------------
|
|
-- Specify_Adalib_Dir --
|
|
------------------------
|
|
|
|
procedure Specify_Adalib_Dir (Path : String) is
|
|
begin
|
|
if Path'Length = 0 then
|
|
Adalib_Path := null;
|
|
else
|
|
Adalib_Path := new String'(Path);
|
|
end if;
|
|
end Specify_Adalib_Dir;
|
|
|
|
end MLib.Utl;
|