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_Address  : String  := "";
 108       Lib_Version  : String  := "";
 109       Relocatable  : Boolean := False;
 110       Auto_Init    : Boolean := False)
 111    is
 112       pragma Unreferenced (Foreign);
 113       pragma Unreferenced (Afiles);
 114       pragma Unreferenced (Interfaces);
 115       pragma Unreferenced (Symbol_Data);
 116       pragma Unreferenced (Lib_Address);
 117       pragma Unreferenced (Relocatable);
 118
 119       Lib_File : constant String :=
 120         Lib_Dir & Directory_Separator & "lib" &
 121         MLib.Fil.Ext_To (Lib_Filename, DLL_Ext);
 122
 123       Version_Arg          : String_Access;
 124       Symbolic_Link_Needed : Boolean := False;
 125
 126       Init_Fini : Argument_List_Access := Empty_Argument_List;
 127
 128       Common_Options : constant Argument_List :=
 129                          Options & new String'(PIC_Option);
 130       --  Common set of options to the gcc command performing the link.
 131       --  On HPUX, this command eventually resorts to collect2, which may
 132       --  generate a C file and compile it on the fly. This compilation shall
 133       --  also generate position independant code for the final link to
 134       --  succeed.
 135    begin
 136       if Opt.Verbose_Mode then
 137          Write_Str ("building relocatable shared library ");
 138          Write_Line (Lib_File);
 139       end if;
 140
 141       --  If specified, add automatic elaboration/finalization
 142       if Auto_Init then
 143          Init_Fini := Init_Fini_List;
 144          Init_Fini (2) := new String'("-Wl," & Lib_Filename & "init");
 145          Init_Fini (4) := new String'("-Wl," & Lib_Filename & "final");
 146       end if;
 147
 148       if Lib_Version = "" then
 149          MLib.Utl.Gcc
 150            (Output_File => Lib_File,
 151             Objects     => Ofiles,
 152             Options     => Common_Options & Init_Fini.all,
 153             Driver_Name => Driver_Name);
 154
 155       else
 156          Version_Arg := new String'("-Wl,+h," & Lib_Version);
 157
 158          if Is_Absolute_Path (Lib_Version) then
 159             MLib.Utl.Gcc
 160               (Output_File => Lib_Version,
 161                Objects     => Ofiles,
 162                Options     => Common_Options & Version_Arg & Init_Fini.all,
 163                Driver_Name => Driver_Name);
 164             Symbolic_Link_Needed := Lib_Version /= Lib_File;
 165
 166          else
 167             MLib.Utl.Gcc
 168               (Output_File => Lib_Dir & Directory_Separator & Lib_Version,
 169                Objects     => Ofiles,
 170                Options     => Common_Options & Version_Arg & Init_Fini.all,
 171                Driver_Name => Driver_Name);
 172             Symbolic_Link_Needed :=
 173               Lib_Dir & Directory_Separator & Lib_Version /= Lib_File;
 174          end if;
 175
 176          if Symbolic_Link_Needed then
 177             declare
 178                Success : Boolean;
 179                Oldpath : String (1 .. Lib_Version'Length + 1);
 180                Newpath : String (1 .. Lib_File'Length + 1);
 181
 182                Result : Integer;
 183                pragma Unreferenced (Result);
 184
 185                function Symlink
 186                  (Oldpath : System.Address;
 187                   Newpath : System.Address) return Integer;
 188                pragma Import (C, Symlink, "__gnat_symlink");
 189
 190             begin
 191                Oldpath (1 .. Lib_Version'Length) := Lib_Version;
 192                Oldpath (Oldpath'Last)            := ASCII.NUL;
 193                Newpath (1 .. Lib_File'Length)    := Lib_File;
 194                Newpath (Newpath'Last)            := ASCII.NUL;
 195
 196                Delete_File (Lib_File, Success);
 197
 198                Result := Symlink (Oldpath'Address, Newpath'Address);
 199             end;
 200          end if;
 201       end if;
 202    end Build_Dynamic_Library;
 203
 204    -------------------------
 205    -- Default_DLL_Address --
 206    -------------------------
 207
 208    function Default_DLL_Address return String is
 209    begin
 210       return "";
 211    end Default_DLL_Address;
 212
 213    -------------
 214    -- DLL_Ext --
 215    -------------
 216
 217    function DLL_Ext return String is
 218    begin
 219       return "sl";
 220    end DLL_Ext;
 221
 222    --------------------
 223    -- Dynamic_Option --
 224    --------------------
 225
 226    function Dynamic_Option return String is
 227    begin
 228       return "-shared";
 229    end Dynamic_Option;
 230
 231    -------------------
 232    -- Is_Object_Ext --
 233    -------------------
 234
 235    function Is_Object_Ext (Ext : String) return Boolean is
 236    begin
 237       return Ext = ".o";
 238    end Is_Object_Ext;
 239
 240    --------------
 241    -- Is_C_Ext --
 242    --------------
 243
 244    function Is_C_Ext (Ext : String) return Boolean is
 245    begin
 246       return Ext = ".c";
 247    end Is_C_Ext;
 248
 249    --------------------
 250    -- Is_Archive_Ext --
 251    --------------------
 252
 253    function Is_Archive_Ext (Ext : String) return Boolean is
 254    begin
 255       return Ext = ".a" or else Ext = ".so";
 256    end Is_Archive_Ext;
 257
 258    -------------
 259    -- Libgnat --
 260    -------------
 261
 262    function Libgnat return String is
 263    begin
 264       return "libgnat.a";
 265    end Libgnat;
 266
 267    ------------------------
 268    -- Library_Exists_For --
 269    ------------------------
 270
 271    function Library_Exists_For (Project : Project_Id) return Boolean is
 272    begin
 273       if not Projects.Table (Project).Library then
 274          Prj.Com.Fail ("INTERNAL ERROR: Library_Exists_For called " &
 275                        "for non library project");
 276          return False;
 277
 278       else
 279          declare
 280             Lib_Dir : constant String :=
 281               Get_Name_String (Projects.Table (Project).Library_Dir);
 282             Lib_Name : constant String :=
 283               Get_Name_String (Projects.Table (Project).Library_Name);
 284
 285          begin
 286             if Projects.Table (Project).Library_Kind = Static then
 287                return Is_Regular_File
 288                  (Lib_Dir & Directory_Separator & "lib" &
 289                   Fil.Ext_To (Lib_Name, Archive_Ext));
 290
 291             else
 292                return Is_Regular_File
 293                  (Lib_Dir & Directory_Separator & "lib" &
 294                   Fil.Ext_To (Lib_Name, DLL_Ext));
 295             end if;
 296          end;
 297       end if;
 298    end Library_Exists_For;
 299
 300    ---------------------------
 301    -- Library_File_Name_For --
 302    ---------------------------
 303
 304    function Library_File_Name_For (Project : Project_Id) return Name_Id is
 305    begin
 306       if not Projects.Table (Project).Library then
 307          Prj.Com.Fail ("INTERNAL ERROR: Library_File_Name_For called " &
 308                        "for non library project");
 309          return No_Name;
 310
 311       else
 312          declare
 313             Lib_Name : constant String :=
 314               Get_Name_String (Projects.Table (Project).Library_Name);
 315
 316          begin
 317             Name_Len := 3;
 318             Name_Buffer (1 .. Name_Len) := "lib";
 319
 320             if Projects.Table (Project).Library_Kind = 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;