gcc/ada/mlib-tgt-hpux.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             M L I B . T G T                              --
   6 --                             (HP-UX Version)                              --
   7 --                                                                          --
   8 --                                 B o d y                                  --
   9 --                                                                          --
  10 --           Copyright (C) 2003-2004, Ada Core Technologies, 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,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, 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 --  libraries (static only on HP-UX).
  30
  31 --  This is the HP-UX 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    No_Arguments        : aliased Argument_List         := (1 .. 0 => null);
  44    Empty_Argument_List : constant Argument_List_Access := No_Arguments'Access;
  45
  46    Wl_Init_String : aliased String         := "-Wl,+init";
  47    Wl_Init        : constant String_Access := Wl_Init_String'Access;
  48    Wl_Fini_String : aliased String         := "-Wl,+fini";
  49    Wl_Fini        : constant String_Access := Wl_Fini_String'Access;
  50
  51    Init_Fini_List :  constant Argument_List_Access :=
  52                        new Argument_List'(1 => Wl_Init,
  53                                           2 => null,
  54                                           3 => Wl_Fini,
  55                                           4 => null);
  56    --  Used to put switches for automatic elaboration/finalization
  57    ---------------------
  58    -- Archive_Builder --
  59    ---------------------
  60
  61    function Archive_Builder return String is
  62    begin
  63       return "ar";
  64    end Archive_Builder;
  65
  66    -----------------------------
  67    -- Archive_Builder_Options --
  68    -----------------------------
  69
  70    function Archive_Builder_Options return String_List_Access is
  71    begin
  72       return new String_List'(1 => new String'("cr"));
  73    end Archive_Builder_Options;
  74
  75    -----------------
  76    -- Archive_Ext --
  77    -----------------
  78
  79    function Archive_Ext return String is
  80    begin
  81       return "a";
  82    end Archive_Ext;
  83
  84    ---------------------
  85    -- Archive_Indexer --
  86    ---------------------
  87
  88    function Archive_Indexer return String is
  89    begin
  90       return "ranlib";
  91    end Archive_Indexer;
  92
  93    ---------------------------
  94    -- Build_Dynamic_Library --
  95    ---------------------------
  96
  97    procedure Build_Dynamic_Library
  98      (Ofiles       : Argument_List;
  99       Foreign      : Argument_List;
 100       Afiles       : Argument_List;
 101       Options      : Argument_List;
 102       Interfaces   : Argument_List;
 103       Lib_Filename : String;
 104       Lib_Dir      : String;
 105       Symbol_Data  : Symbol_Record;
 106       Driver_Name  : Name_Id := No_Name;
 107       Lib_Version  : String  := "";
 108       Auto_Init    : Boolean := False)
 109    is
 110       pragma Unreferenced (Foreign);
 111       pragma Unreferenced (Afiles);
 112       pragma Unreferenced (Interfaces);
 113       pragma Unreferenced (Symbol_Data);
 114
 115       Lib_File : constant String :=
 116                    Lib_Dir & Directory_Separator & "lib" &
 117                    MLib.Fil.Ext_To (Lib_Filename, DLL_Ext);
 118
 119       Version_Arg          : String_Access;
 120       Symbolic_Link_Needed : Boolean := False;
 121
 122       Init_Fini : Argument_List_Access := Empty_Argument_List;
 123
 124       Common_Options : constant Argument_List :=
 125                          Options & new String'(PIC_Option);
 126       --  Common set of options to the gcc command performing the link.
 127       --  On HPUX, this command eventually resorts to collect2, which may
 128       --  generate a C file and compile it on the fly. This compilation shall
 129       --  also generate position independant code for the final link to
 130       --  succeed.
 131    begin
 132       if Opt.Verbose_Mode then
 133          Write_Str ("building relocatable shared library ");
 134          Write_Line (Lib_File);
 135       end if;
 136
 137       --  If specified, add automatic elaboration/finalization
 138
 139       if Auto_Init then
 140          Init_Fini := Init_Fini_List;
 141          Init_Fini (2) := new String'("-Wl," & Lib_Filename & "init");
 142          Init_Fini (4) := new String'("-Wl," & Lib_Filename & "final");
 143       end if;
 144
 145       if Lib_Version = "" then
 146          MLib.Utl.Gcc
 147            (Output_File => Lib_File,
 148             Objects     => Ofiles,
 149             Options     => Common_Options & Init_Fini.all,
 150             Driver_Name => Driver_Name);
 151
 152       else
 153          Version_Arg := new String'("-Wl,+h," & Lib_Version);
 154
 155          if Is_Absolute_Path (Lib_Version) then
 156             MLib.Utl.Gcc
 157               (Output_File => Lib_Version,
 158                Objects     => Ofiles,
 159                Options     => Common_Options & Version_Arg & Init_Fini.all,
 160                Driver_Name => Driver_Name);
 161             Symbolic_Link_Needed := Lib_Version /= Lib_File;
 162
 163          else
 164             MLib.Utl.Gcc
 165               (Output_File => Lib_Dir & Directory_Separator & Lib_Version,
 166                Objects     => Ofiles,
 167                Options     => Common_Options & Version_Arg & Init_Fini.all,
 168                Driver_Name => Driver_Name);
 169             Symbolic_Link_Needed :=
 170               Lib_Dir & Directory_Separator & Lib_Version /= Lib_File;
 171          end if;
 172
 173          if Symbolic_Link_Needed then
 174             declare
 175                Success : Boolean;
 176                Oldpath : String (1 .. Lib_Version'Length + 1);
 177                Newpath : String (1 .. Lib_File'Length + 1);
 178
 179                Result : Integer;
 180                pragma Unreferenced (Result);
 181
 182                function Symlink
 183                  (Oldpath : System.Address;
 184                   Newpath : System.Address) return Integer;
 185                pragma Import (C, Symlink, "__gnat_symlink");
 186
 187             begin
 188                Oldpath (1 .. Lib_Version'Length) := Lib_Version;
 189                Oldpath (Oldpath'Last)            := ASCII.NUL;
 190                Newpath (1 .. Lib_File'Length)    := Lib_File;
 191                Newpath (Newpath'Last)            := ASCII.NUL;
 192
 193                Delete_File (Lib_File, Success);
 194
 195                Result := Symlink (Oldpath'Address, Newpath'Address);
 196             end;
 197          end if;
 198       end if;
 199    end Build_Dynamic_Library;
 200
 201    -------------
 202    -- DLL_Ext --
 203    -------------
 204
 205    function DLL_Ext return String is
 206    begin
 207       return "sl";
 208    end DLL_Ext;
 209
 210    --------------------
 211    -- Dynamic_Option --
 212    --------------------
 213
 214    function Dynamic_Option return String is
 215    begin
 216       return "-shared";
 217    end Dynamic_Option;
 218
 219    -------------------
 220    -- Is_Object_Ext --
 221    -------------------
 222
 223    function Is_Object_Ext (Ext : String) return Boolean is
 224    begin
 225       return Ext = ".o";
 226    end Is_Object_Ext;
 227
 228    --------------
 229    -- Is_C_Ext --
 230    --------------
 231
 232    function Is_C_Ext (Ext : String) return Boolean is
 233    begin
 234       return Ext = ".c";
 235    end Is_C_Ext;
 236
 237    --------------------
 238    -- Is_Archive_Ext --
 239    --------------------
 240
 241    function Is_Archive_Ext (Ext : String) return Boolean is
 242    begin
 243       return Ext = ".a" or else Ext = ".so";
 244    end Is_Archive_Ext;
 245
 246    -------------
 247    -- Libgnat --
 248    -------------
 249
 250    function Libgnat return String is
 251    begin
 252       return "libgnat.a";
 253    end Libgnat;
 254
 255    ------------------------
 256    -- Library_Exists_For --
 257    ------------------------
 258
 259    function Library_Exists_For (Project : Project_Id) return Boolean is
 260    begin
 261       if not Projects.Table (Project).Library then
 262          Prj.Com.Fail ("INTERNAL ERROR: Library_Exists_For called " &
 263                        "for non library project");
 264          return False;
 265
 266       else
 267          declare
 268             Lib_Dir : constant String :=
 269               Get_Name_String (Projects.Table (Project).Library_Dir);
 270             Lib_Name : constant String :=
 271               Get_Name_String (Projects.Table (Project).Library_Name);
 272
 273          begin
 274             if Projects.Table (Project).Library_Kind = Static then
 275                return Is_Regular_File
 276                  (Lib_Dir & Directory_Separator & "lib" &
 277                   Fil.Ext_To (Lib_Name, Archive_Ext));
 278
 279             else
 280                return Is_Regular_File
 281                  (Lib_Dir & Directory_Separator & "lib" &
 282                   Fil.Ext_To (Lib_Name, DLL_Ext));
 283             end if;
 284          end;
 285       end if;
 286    end Library_Exists_For;
 287
 288    ---------------------------
 289    -- Library_File_Name_For --
 290    ---------------------------
 291
 292    function Library_File_Name_For (Project : Project_Id) return Name_Id is
 293    begin
 294       if not Projects.Table (Project).Library then
 295          Prj.Com.Fail ("INTERNAL ERROR: Library_File_Name_For called " &
 296                        "for non library project");
 297          return No_Name;
 298
 299       else
 300          declare
 301             Lib_Name : constant String :=
 302               Get_Name_String (Projects.Table (Project).Library_Name);
 303
 304          begin
 305             Name_Len := 3;
 306             Name_Buffer (1 .. Name_Len) := "lib";
 307
 308             if Projects.Table (Project).Library_Kind = Static then
 309                Add_Str_To_Name_Buffer (Fil.Ext_To (Lib_Name, Archive_Ext));
 310
 311             else
 312                Add_Str_To_Name_Buffer (Fil.Ext_To (Lib_Name, DLL_Ext));
 313             end if;
 314
 315             return Name_Find;
 316          end;
 317       end if;
 318    end Library_File_Name_For;
 319
 320    ----------------
 321    -- Object_Ext --
 322    ----------------
 323
 324    function Object_Ext return String is
 325    begin
 326       return "o";
 327    end Object_Ext;
 328
 329    ----------------
 330    -- PIC_Option --
 331    ----------------
 332
 333    function PIC_Option return String is
 334    begin
 335       return "-fPIC";
 336    end PIC_Option;
 337
 338    -----------------------------------------------
 339    -- Standalone_Library_Auto_Init_Is_Supported --
 340    -----------------------------------------------
 341
 342    function Standalone_Library_Auto_Init_Is_Supported return Boolean is
 343    begin
 344       return True;
 345    end Standalone_Library_Auto_Init_Is_Supported;
 346
 347    ---------------------------
 348    -- Support_For_Libraries --
 349    ---------------------------
 350
 351    function Support_For_Libraries return Library_Support is
 352    begin
 353       return Full;
 354    end Support_For_Libraries;
 355
 356 end MLib.Tgt;