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

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                            M D L L . T O O L S                           --

--                                                                          --

--                                 B o d y                                  --

--                                                                          --

--          Copyright (C) 1992-2008, 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.      --

--                                                                          --

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

--  Interface to externals tools used to build DLL and import libraries

with Ada.Text_IO;

with Ada.Exceptions;

with GNAT.Directory_Operations;

with Osint;

package body MDLL.Utl is

   use Ada;

   use GNAT;

   Dlltool_Name  : constant String := "dlltool";

   Dlltool_Exec  : OS_Lib.String_Access;

   Gcc_Name      : constant String := "gcc";

   Gcc_Exec      : OS_Lib.String_Access;

   Gnatbind_Name : constant String := "gnatbind";

   Gnatbind_Exec : OS_Lib.String_Access;

   Gnatlink_Name : constant String := "gnatlink";

   Gnatlink_Exec : OS_Lib.String_Access;

   procedure Print_Command

     (Tool_Name : String;

      Arguments : OS_Lib.Argument_List);

   --  display the command run when in Verbose mode

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

   -- Print_Command --

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

   procedure Print_Command

     (Tool_Name : String;

      Arguments : OS_Lib.Argument_List)

   is

   begin

      if Verbose then

         Text_IO.Put (Tool_Name);

         for K in Arguments'Range loop

            Text_IO.Put (" " & Arguments (K).all);

         end loop;

         Text_IO.New_Line;

      end if;

   end Print_Command;

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

   -- Dlltool --

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

   procedure Dlltool

     (Def_Filename : String;

      DLL_Name     : String;

      Library      : String;

      Exp_Table    : String := "";

      Base_File    : String := "";

      Build_Import : Boolean)

   is

      Arguments  : OS_Lib.Argument_List (1 .. 11);

      A          : Positive;

      Success    : Boolean;

      Def_Opt    : aliased String := "--def";

      Def_V      : aliased String := Def_Filename;

      Dll_Opt    : aliased String := "--dllname";

      Dll_V      : aliased String := DLL_Name;

      Lib_Opt    : aliased String := "--output-lib";

      Lib_V      : aliased String := Library;

      Exp_Opt    : aliased String := "--output-exp";

      Exp_V      : aliased String := Exp_Table;

      Bas_Opt    : aliased String := "--base-file";

      Bas_V      : aliased String := Base_File;

      No_Suf_Opt : aliased String := "-k";

   begin

      Arguments (1 .. 4) := (1 => Def_Opt'Unchecked_Access,

                             2 => Def_V'Unchecked_Access,

                             3 => Dll_Opt'Unchecked_Access,

                             4 => Dll_V'Unchecked_Access);

      A := 4;

      if Kill_Suffix then

         A := A + 1;

         Arguments (A) := No_Suf_Opt'Unchecked_Access;

      end if;

      if Library /= "" and then Build_Import then

         A := A + 1;

         Arguments (A) := Lib_Opt'Unchecked_Access;

         A := A + 1;

         Arguments (A) := Lib_V'Unchecked_Access;

      end if;

      if Exp_Table /= "" then

         A := A + 1;

         Arguments (A) := Exp_Opt'Unchecked_Access;

         A := A + 1;

         Arguments (A) := Exp_V'Unchecked_Access;

      end if;

      if Base_File /= "" then

         A := A + 1;

         Arguments (A) := Bas_Opt'Unchecked_Access;

         A := A + 1;

         Arguments (A) := Bas_V'Unchecked_Access;

      end if;

      Print_Command ("dlltool", Arguments (1 .. A));

      OS_Lib.Spawn (Dlltool_Exec.all, Arguments (1 .. A), Success);

      if not Success then

         Exceptions.Raise_Exception

           (Tools_Error'Identity, Dlltool_Name & " execution error.");

      end if;

   end Dlltool;

   ---------

   -- Gcc --

   ---------

   procedure Gcc

     (Output_File : String;

      Files       : Argument_List;

      Options     : Argument_List;

      Base_File   : String := "";

      Build_Lib   : Boolean := False)

   is

      use Osint;

      Arguments : OS_Lib.Argument_List

        (1 .. 5 + Files'Length + Options'Length);

      A         : Natural := 0;

      Success   : Boolean;

      C_Opt     : aliased String := "-c";

      Out_Opt   : aliased String := "-o";

      Out_V     : aliased String := Output_File;

      Bas_Opt   : aliased String := "-Wl,--base-file," & Base_File;

      Lib_Opt   : aliased String := "-mdll";

      Lib_Dir   : aliased String := "-L" & Object_Dir_Default_Prefix;

   begin

      A := A + 1;

      if Build_Lib then

         Arguments (A) := Lib_Opt'Unchecked_Access;

      else

         Arguments (A) := C_Opt'Unchecked_Access;

      end if;

      A := A + 1;

      Arguments (A .. A + 2) := (Out_Opt'Unchecked_Access,

                                 Out_V'Unchecked_Access,

                                 Lib_Dir'Unchecked_Access);

      A := A + 2;

      if Base_File /= "" then

         A := A + 1;

         Arguments (A) := Bas_Opt'Unchecked_Access;

      end if;

      A := A + 1;

      Arguments (A .. A + Files'Length - 1) := Files;

      A := A + Files'Length - 1;

      if Build_Lib then

         A := A + 1;

         Arguments (A .. A + Options'Length - 1) := Options;

         A := A + Options'Length - 1;

      else

         declare

            Largs : Argument_List (Options'Range);

            L     : Natural := Largs'First - 1;

         begin

            for K in Options'Range loop

               if Options (K) (1 .. 2) /= "-l" then

                  L := L + 1;

                  Largs (L) := Options (K);

               end if;

            end loop;

            A := A + 1;

            Arguments (A .. A + L - 1) := Largs (1 .. L);

            A := A + L - 1;

         end;

      end if;

      Print_Command ("gcc", Arguments (1 .. A));

      OS_Lib.Spawn (Gcc_Exec.all, Arguments (1 .. A), Success);

      if not Success then

         Exceptions.Raise_Exception

           (Tools_Error'Identity, Gcc_Name & " execution error.");

      end if;

   end Gcc;

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

   -- Gnatbind --

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

   procedure Gnatbind

     (Alis : Argument_List;

      Args : Argument_List := Null_Argument_List)

   is

      Arguments   : OS_Lib.Argument_List (1 .. 1 + Alis'Length + Args'Length);

      Success     : Boolean;

      No_Main_Opt : aliased String := "-n";

   begin

      Arguments (1) := No_Main_Opt'Unchecked_Access;

      Arguments (2 .. 1 + Alis'Length) := Alis;

      Arguments (2 + Alis'Length .. Arguments'Last) := Args;

      Print_Command ("gnatbind", Arguments);

      OS_Lib.Spawn (Gnatbind_Exec.all, Arguments, Success);

      --  Delete binder files on failure

      if not Success then

         declare

            Base_Name : constant String :=

              Directory_Operations.Base_Name (Alis (Alis'First).all, ".ali");

         begin

            OS_Lib.Delete_File ("b~" & Base_Name & ".ads", Success);

            OS_Lib.Delete_File ("b~" & Base_Name & ".adb", Success);

         end;

         Exceptions.Raise_Exception

           (Tools_Error'Identity, Gnatbind_Name & " execution error.");

      end if;

   end Gnatbind;

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

   -- Gnatlink --

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

   procedure Gnatlink

     (Ali  : String;

      Args : Argument_List := Null_Argument_List)

   is

      Arguments : OS_Lib.Argument_List (1 .. 1 + Args'Length);

      Success   : Boolean;

      Ali_Name  : aliased String := Ali;

   begin

      Arguments (1) := Ali_Name'Unchecked_Access;

      Arguments (2 .. Arguments'Last) := Args;

      Print_Command ("gnatlink", Arguments);

      OS_Lib.Spawn (Gnatlink_Exec.all, Arguments, Success);

      if not Success then

         --  Delete binder files

         declare

            Base_Name : constant String :=

                          Directory_Operations.Base_Name (Ali, ".ali");

         begin

            OS_Lib.Delete_File ("b~" & Base_Name & ".ads", Success);

            OS_Lib.Delete_File ("b~" & Base_Name & ".adb", Success);

            OS_Lib.Delete_File ("b~" & Base_Name & ".ali", Success);

            OS_Lib.Delete_File ("b~" & Base_Name & ".o", Success);

         end;

         Exceptions.Raise_Exception

           (Tools_Error'Identity, Gnatlink_Name & " execution error.");

      end if;

   end Gnatlink;

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

   -- Locate --

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

   procedure Locate is

      use type OS_Lib.String_Access;

   begin

      --  dlltool

      if Dlltool_Exec = null then

         Dlltool_Exec := OS_Lib.Locate_Exec_On_Path (Dlltool_Name);

         if Dlltool_Exec = null then

            Exceptions.Raise_Exception

              (Tools_Error'Identity, Dlltool_Name & " not found in path");

         elsif Verbose then

            Text_IO.Put_Line ("using " & Dlltool_Exec.all);

         end if;

      end if;

      --  gcc

      if Gcc_Exec = null then

         Gcc_Exec := OS_Lib.Locate_Exec_On_Path (Gcc_Name);

         if Gcc_Exec = null then

            Exceptions.Raise_Exception

              (Tools_Error'Identity, Gcc_Name & " not found in path");

         elsif Verbose then

            Text_IO.Put_Line ("using " & Gcc_Exec.all);

         end if;

      end if;

      --  gnatbind

      if Gnatbind_Exec = null then

         Gnatbind_Exec := OS_Lib.Locate_Exec_On_Path (Gnatbind_Name);

         if Gnatbind_Exec = null then

            Exceptions.Raise_Exception

              (Tools_Error'Identity, Gnatbind_Name & " not found in path");

         elsif Verbose then

            Text_IO.Put_Line ("using " & Gnatbind_Exec.all);

         end if;

      end if;

      --  gnatlink

      if Gnatlink_Exec = null then

         Gnatlink_Exec := OS_Lib.Locate_Exec_On_Path (Gnatlink_Name);

         if Gnatlink_Exec = null then

            Exceptions.Raise_Exception

              (Tools_Error'Identity, Gnatlink_Name & " not found in path");

         elsif Verbose then

            Text_IO.Put_Line ("using " & Gnatlink_Exec.all);

            Text_IO.New_Line;

         end if;

      end if;

   end Locate;

end MDLL.Utl;