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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                     M L I B . T G T . S P E C I F I C                    --

--                             (Darwin Version)                             --

--                                                                          --

--                                 B o d y                                  --

--                                                                          --

--          Copyright (C) 2001-2008, 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.  See the GNU General Public License --

-- for  more details.  You should have  received  a copy of the GNU General --

-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --

-- http://www.gnu.org/licenses for a complete copy of the license.          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

------------------------------------------------------------------------------

--  This is the Darwin version of the body

with MLib;     use MLib;

with MLib.Fil;

with MLib.Utl;

with Opt;      use Opt;

with Output;   use Output;

package body MLib.Tgt.Specific is

   --  Non default subprograms

   function Archive_Indexer_Options return String_List_Access;

   procedure Build_Dynamic_Library

     (Ofiles       : Argument_List;

      Options      : Argument_List;

      Interfaces   : Argument_List;

      Lib_Filename : String;

      Lib_Dir      : String;

      Symbol_Data  : Symbol_Record;

      Driver_Name  : Name_Id := No_Name;

      Lib_Version  : String  := "";

      Auto_Init    : Boolean := False);

   function DLL_Ext return String;

   function Dynamic_Option return String;

   function Is_Archive_Ext (Ext : String) return Boolean;

   --  Local objects

   Flat_Namespace : aliased String := "-Wl,-flat_namespace";

   --  Instruct the linker to build the shared library as a flat

   --  namespace image. The default is a two-level namespace image.

   Shared_Libgcc  : aliased String := "-shared-libgcc";

   Shared_Options : constant Argument_List :=

                      (1 => Flat_Namespace'Access,

                       2 => Shared_Libgcc'Access);

   -----------------------------

   -- Archive_Indexer_Options --

   -----------------------------

   function Archive_Indexer_Options return String_List_Access is

   begin

      return new String_List'(1 => new String'("-c"));

   end Archive_Indexer_Options;

   ---------------------------

   -- Build_Dynamic_Library --

   ---------------------------

   procedure Build_Dynamic_Library

     (Ofiles       : Argument_List;

      Options      : Argument_List;

      Interfaces   : Argument_List;

      Lib_Filename : String;

      Lib_Dir      : String;

      Symbol_Data  : Symbol_Record;

      Driver_Name  : Name_Id := No_Name;

      Lib_Version  : String  := "";

      Auto_Init    : Boolean := False)

   is

      pragma Unreferenced (Interfaces);

      pragma Unreferenced (Symbol_Data);

      pragma Unreferenced (Auto_Init);

      Lib_File : constant String :=

                   "lib" & Fil.Append_To (Lib_Filename, DLL_Ext);

      Lib_Path : constant String :=

                   Lib_Dir & Directory_Separator & Lib_File;

      Symbolic_Link_Needed : Boolean := False;

   begin

      if Opt.Verbose_Mode then

         Write_Str ("building relocatable shared library ");

         Write_Line (Lib_File);

      end if;

      --  If specified, add automatic elaboration/finalization

      if Lib_Version = "" then

         Utl.Gcc

           (Output_File => Lib_Path,

            Objects     => Ofiles,

            Options     => Options & Shared_Options,

            Driver_Name => Driver_Name,

            Options_2   => No_Argument_List);

      else

         declare

            Maj_Version : constant String :=

                            Major_Id_Name (Lib_File, Lib_Version);

         begin

            if Is_Absolute_Path (Lib_Version) then

               Utl.Gcc

                 (Output_File => Lib_Version,

                  Objects     => Ofiles,

                  Options     => Options & Shared_Options,

                  Driver_Name => Driver_Name,

                  Options_2   => No_Argument_List);

               Symbolic_Link_Needed := Lib_Version /= Lib_Path;

            else

               Utl.Gcc

                 (Output_File => Lib_Dir & Directory_Separator & Lib_Version,

                  Objects     => Ofiles,

                  Options     => Options & Shared_Options,

                  Driver_Name => Driver_Name,

                  Options_2   => No_Argument_List);

               Symbolic_Link_Needed :=

                 Lib_Dir & Directory_Separator & Lib_Version /= Lib_Path;

            end if;

            if Symbolic_Link_Needed then

               Create_Sym_Links

                 (Lib_Path, Lib_Version, Lib_Dir, Maj_Version);

            end if;

         end;

      end if;

   end Build_Dynamic_Library;

   -------------

   -- DLL_Ext --

   -------------

   function DLL_Ext return String is

   begin

      return "dylib";

   end DLL_Ext;

   --------------------

   -- Dynamic_Option --

   --------------------

   function Dynamic_Option return String is

   begin

      return "-dynamiclib";

   end Dynamic_Option;

   --------------------

   -- Is_Archive_Ext --

   --------------------

   function Is_Archive_Ext (Ext : String) return Boolean is

   begin

      return Ext = ".dylib" or else Ext = ".a";

   end Is_Archive_Ext;

begin

   Archive_Indexer_Options_Ptr := Archive_Indexer_Options'Access;

   Build_Dynamic_Library_Ptr := Build_Dynamic_Library'Access;

   DLL_Ext_Ptr := DLL_Ext'Access;

   Dynamic_Option_Ptr := Dynamic_Option'Access;

   Is_Archive_Ext_Ptr := Is_Archive_Ext'Access;

end MLib.Tgt.Specific;