gcc/ada/mlib-tgt-darwin.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             M L I B . T G T                              --
   6 --                             (Darwin Version)                             --
   7 --                                                                          --
   8 --                                 B o d y                                  --
   9 --                                                                          --
  10 --          Copyright (C) 2001-2005, Free Software Foundation, Inc.         --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  21 -- Boston, MA 02110-1301, USA.                                              --
  22 --                                                                          --
  23 -- GNAT was originally developed  by the GNAT team at  New York University. --
  24 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  25 --                                                                          --
  26 ------------------------------------------------------------------------------
  27
  28 --  This package provides a set of target dependent routines to build
  29 --  static, dynamic and shared libraries.
  30
  31 --  This is the Darwin version of the body
  32
  33 with MLib.Fil;
  34 with MLib.Utl;
  35 with Namet;  use Namet;
  36 with Opt;
  37 with Output; use Output;
  38 with Prj.Com;
  39 with System;
  40
  41 package body MLib.Tgt is
  42
  43    use GNAT;
  44    use MLib;
  45
  46    ---------------------
  47    -- Archive_Builder --
  48    ---------------------
  49
  50    function Archive_Builder return String is
  51    begin
  52       return "ar";
  53    end Archive_Builder;
  54
  55    -----------------------------
  56    -- Archive_Builder_Options --
  57    -----------------------------
  58
  59    function Archive_Builder_Options return String_List_Access is
  60    begin
  61       return new String_List'(1 => new String'("cr"));
  62    end Archive_Builder_Options;
  63
  64    -----------------
  65    -- Archive_Ext --
  66    -----------------
  67
  68    function Archive_Ext return  String is
  69    begin
  70       return "a";
  71    end Archive_Ext;
  72
  73    ---------------------
  74    -- Archive_Indexer --
  75    ---------------------
  76
  77    function Archive_Indexer return String is
  78    begin
  79       return "ranlib";
  80    end Archive_Indexer;
  81
  82    -----------------------------
  83    -- Archive_Indexer_Options --
  84    -----------------------------
  85
  86    function Archive_Indexer_Options return String_List_Access is
  87    begin
  88       return new String_List'(1 => new String'("-c"));
  89    end Archive_Indexer_Options;
  90
  91    ---------------------------
  92    -- Build_Dynamic_Library --
  93    ---------------------------
  94
  95    procedure Build_Dynamic_Library
  96      (Ofiles       : Argument_List;
  97       Foreign      : Argument_List;
  98       Afiles       : Argument_List;
  99       Options      : Argument_List;
 100       Options_2    : Argument_List;
 101       Interfaces   : Argument_List;
 102       Lib_Filename : String;
 103       Lib_Dir      : String;
 104       Symbol_Data  : Symbol_Record;
 105       Driver_Name  : Name_Id := No_Name;
 106       Lib_Version  : String  := "";
 107       Auto_Init    : Boolean := False)
 108    is
 109       pragma Unreferenced (Foreign);
 110       pragma Unreferenced (Afiles);
 111       pragma Unreferenced (Interfaces);
 112       pragma Unreferenced (Symbol_Data);
 113       pragma Unreferenced (Auto_Init);
 114
 115       Lib_File : constant String :=
 116                    Lib_Dir & Directory_Separator & "lib" &
 117                    Fil.Ext_To (Lib_Filename, DLL_Ext);
 118
 119       Version_Arg          : String_Access;
 120       Symbolic_Link_Needed : Boolean := False;
 121
 122    begin
 123       if Opt.Verbose_Mode then
 124          Write_Str ("building relocatable shared library ");
 125          Write_Line (Lib_File);
 126       end if;
 127
 128       --  If specified, add automatic elaboration/finalization
 129
 130       if Lib_Version = "" then
 131          Utl.Gcc
 132            (Output_File => Lib_File,
 133             Objects     => Ofiles,
 134             Options     => Options,
 135             Driver_Name => Driver_Name,
 136             Options_2   => Options_2);
 137
 138       else
 139          --  Instruct the linker to build the shared library as a flat
 140          --  namespace image, which is not the default. The default is a two
 141          --  level namespace image.
 142
 143          Version_Arg := new String'("-Wl,-flat_namespace");
 144
 145          if Is_Absolute_Path (Lib_Version) then
 146             Utl.Gcc
 147               (Output_File => Lib_Version,
 148                Objects     => Ofiles,
 149                Options     => Options & Version_Arg,
 150                Driver_Name => Driver_Name,
 151                Options_2   => Options_2);
 152             Symbolic_Link_Needed := Lib_Version /= Lib_File;
 153
 154          else
 155             Utl.Gcc
 156               (Output_File => Lib_Dir & Directory_Separator & Lib_Version,
 157                Objects     => Ofiles,
 158                Options     => Options & Version_Arg,
 159                Driver_Name => Driver_Name,
 160                Options_2   => Options_2);
 161             Symbolic_Link_Needed :=
 162               Lib_Dir & Directory_Separator & Lib_Version /= Lib_File;
 163          end if;
 164
 165          if Symbolic_Link_Needed then
 166             declare
 167                Success : Boolean;
 168                Oldpath : String (1 .. Lib_Version'Length + 1);
 169                Newpath : String (1 .. Lib_File'Length + 1);
 170
 171                Result : Integer;
 172                pragma Unreferenced (Result);
 173
 174                function Symlink
 175                  (Oldpath : System.Address;
 176                   Newpath : System.Address) return Integer;
 177                pragma Import (C, Symlink, "__gnat_symlink");
 178
 179             begin
 180                Oldpath (1 .. Lib_Version'Length) := Lib_Version;
 181                Oldpath (Oldpath'Last)            := ASCII.NUL;
 182                Newpath (1 .. Lib_File'Length)    := Lib_File;
 183                Newpath (Newpath'Last)            := ASCII.NUL;
 184
 185                Delete_File (Lib_File, Success);
 186
 187                Result := Symlink (Oldpath'Address, Newpath'Address);
 188             end;
 189          end if;
 190       end if;
 191    end Build_Dynamic_Library;
 192
 193    -------------
 194    -- DLL_Ext --
 195    -------------
 196
 197    function DLL_Ext return String is
 198    begin
 199       return "dylib";
 200    end DLL_Ext;
 201
 202    ----------------
 203    -- DLL_Prefix --
 204    ----------------
 205
 206    function DLL_Prefix return String is
 207    begin
 208       return "lib";
 209    end DLL_Prefix;
 210
 211    --------------------
 212    -- Dynamic_Option --
 213    --------------------
 214
 215    function Dynamic_Option return String is
 216    begin
 217       return "-dynamiclib";
 218    end Dynamic_Option;
 219
 220    -------------------
 221    -- Is_Object_Ext --
 222    -------------------
 223
 224    function Is_Object_Ext (Ext : String) return Boolean is
 225    begin
 226       return Ext = ".o";
 227    end Is_Object_Ext;
 228
 229    --------------
 230    -- Is_C_Ext --
 231    --------------
 232
 233    function Is_C_Ext (Ext : String) return Boolean is
 234    begin
 235       return Ext = ".c";
 236    end Is_C_Ext;
 237
 238    --------------------
 239    -- Is_Archive_Ext --
 240    --------------------
 241
 242    function Is_Archive_Ext (Ext : String) return Boolean is
 243    begin
 244       return Ext = ".dylib" or else Ext = ".a";
 245    end Is_Archive_Ext;
 246
 247    -------------
 248    -- Libgnat --
 249    -------------
 250
 251    function Libgnat return String is
 252    begin
 253       return "libgnat.a";
 254    end Libgnat;
 255
 256    ------------------------
 257    -- Library_Exists_For --
 258    ------------------------
 259
 260    function Library_Exists_For
 261      (Project : Project_Id; In_Tree : Project_Tree_Ref) return Boolean
 262    is
 263    begin
 264       if not In_Tree.Projects.Table (Project).Library then
 265          Prj.Com.Fail ("INTERNAL ERROR: Library_Exists_For called " &
 266                        "for non library project");
 267          return False;
 268
 269       else
 270          declare
 271             Lib_Dir : constant String :=
 272               Get_Name_String
 273                 (In_Tree.Projects.Table (Project).Library_Dir);
 274             Lib_Name : constant String :=
 275               Get_Name_String
 276                 (In_Tree.Projects.Table (Project).Library_Name);
 277
 278          begin
 279             if In_Tree.Projects.Table (Project).Library_Kind =
 280               Static
 281             then
 282                return Is_Regular_File
 283                  (Lib_Dir & Directory_Separator & "lib" &
 284                   Fil.Ext_To (Lib_Name, Archive_Ext));
 285
 286             else
 287                return Is_Regular_File
 288                  (Lib_Dir & Directory_Separator & "lib" &
 289                   Fil.Ext_To (Lib_Name, DLL_Ext));
 290             end if;
 291          end;
 292       end if;
 293    end Library_Exists_For;
 294
 295    ---------------------------
 296    -- Library_File_Name_For --
 297    ---------------------------
 298
 299    function Library_File_Name_For
 300      (Project : Project_Id;
 301       In_Tree : Project_Tree_Ref) return Name_Id
 302    is
 303    begin
 304       if not In_Tree.Projects.Table (Project).Library then
 305          Prj.Com.Fail ("INTERNAL ERROR: Library_File_Name_For called " &
 306                        "for non library project");
 307          return No_Name;
 308
 309       else
 310          declare
 311             Lib_Name : constant String :=
 312               Get_Name_String
 313                 (In_Tree.Projects.Table (Project).Library_Name);
 314
 315          begin
 316             Name_Len := 3;
 317             Name_Buffer (1 .. Name_Len) := "lib";
 318
 319             if In_Tree.Projects.Table (Project).Library_Kind =
 320               Static then
 321                Add_Str_To_Name_Buffer (Fil.Ext_To (Lib_Name, Archive_Ext));
 322
 323             else
 324                Add_Str_To_Name_Buffer (Fil.Ext_To (Lib_Name, DLL_Ext));
 325             end if;
 326
 327             return Name_Find;
 328          end;
 329       end if;
 330    end Library_File_Name_For;
 331
 332    ----------------
 333    -- Object_Ext --
 334    ----------------
 335
 336    function Object_Ext return String is
 337    begin
 338       return "o";
 339    end Object_Ext;
 340
 341    ----------------
 342    -- PIC_Option --
 343    ----------------
 344
 345    function PIC_Option return String is
 346    begin
 347       return "-fPIC";
 348    end PIC_Option;
 349
 350    -----------------------------------------------
 351    -- Standalone_Library_Auto_Init_Is_Supported --
 352    -----------------------------------------------
 353
 354    function Standalone_Library_Auto_Init_Is_Supported return Boolean is
 355    begin
 356       return True;
 357    end Standalone_Library_Auto_Init_Is_Supported;
 358
 359    ---------------------------
 360    -- Support_For_Libraries --
 361    ---------------------------
 362
 363    function Support_For_Libraries return Library_Support is
 364    begin
 365       return Full;
 366    end Support_For_Libraries;
 367
 368 end MLib.Tgt;