gcc/ada/gnatdll.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              G N A T D L L                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1997-2004, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  GNATDLL is a Windows specific tool for building a DLL.
  28 --  Both relocatable and non-relocatable DLL's are supported
  29
  30 with Ada.Text_IO;           use Ada.Text_IO;
  31 with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
  32 with Ada.Exceptions;        use Ada.Exceptions;
  33 with Ada.Command_Line;      use Ada.Command_Line;
  34 with GNAT.OS_Lib;           use GNAT.OS_Lib;
  35 with GNAT.Command_Line;     use GNAT.Command_Line;
  36 with Gnatvsn;
  37
  38 with MDLL.Fil;              use MDLL.Fil;
  39 with MDLL.Utl;              use MDLL.Utl;
  40
  41 procedure Gnatdll is
  42
  43    use type GNAT.OS_Lib.Argument_List;
  44
  45    procedure Syntax;
  46    --  Print out usage
  47
  48    procedure Check (Filename : String);
  49    --  Check that the file whose name is Filename exists
  50
  51    procedure Parse_Command_Line;
  52    --  Parse the command line arguments passed to gnatdll
  53
  54    procedure Check_Context;
  55    --  Check the context before runing any commands to build the library
  56
  57    Syntax_Error : exception;
  58    --  Raised when a syntax error is detected, in this case a usage info will
  59    --  be displayed.
  60
  61    Context_Error : exception;
  62    --  Raised when some files (specifed on the command line) are missing to
  63    --  build the DLL.
  64
  65    Help : Boolean := False;
  66    --  Help will be set to True the usage information is to be displayed.
  67
  68    Version : constant String := Gnatvsn.Gnat_Version_String;
  69    --  Why should it be necessary to make a copy of this
  70
  71    Default_DLL_Address : constant String := "0x11000000";
  72    --  Default address for non relocatable DLL (Win32)
  73
  74    Lib_Filename : Unbounded_String := Null_Unbounded_String;
  75    --  The DLL filename that will be created (.dll)
  76
  77    Def_Filename : Unbounded_String := Null_Unbounded_String;
  78    --  The definition filename (.def)
  79
  80    List_Filename : Unbounded_String := Null_Unbounded_String;
  81    --  The name of the file containing the objects file to put into the DLL
  82
  83    DLL_Address : Unbounded_String := To_Unbounded_String (Default_DLL_Address);
  84    --  The DLL's base address
  85
  86    Gen_Map_File : Boolean := False;
  87    --  Set to True if a map file is to be generated
  88
  89    Objects_Files : Argument_List_Access := MDLL.Null_Argument_List_Access;
  90    --  List of objects to put inside the library
  91
  92    Ali_Files : Argument_List_Access := MDLL.Null_Argument_List_Access;
  93    --  For each Ada file specified, we keep arecord of the corresponding
  94    --  ALI file. This list of SLI files is used to build the binder program.
  95
  96    Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
  97    --  A list of options set in the command line
  98
  99    Largs_Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
 100    Bargs_Options : Argument_List_Access := MDLL.Null_Argument_List_Access;
 101    --  GNAT linker and binder args options
 102
 103    type Build_Mode_State is (Import_Lib, Dynamic_Lib, Dynamic_Lib_Only, Nil);
 104    --  Import_Lib means only the .a file will be created, Dynamic_Lib means
 105    --  that both the DLL and the import library will be created.
 106    --  Dynamic_Lib_Only means that only the DLL will be created (no import
 107    --  library).
 108
 109    Build_Mode : Build_Mode_State := Nil;
 110    --  Will be set when parsing the command line
 111
 112    Must_Build_Relocatable : Boolean := True;
 113    --  True means build a relocatable DLL, will be set to False if a
 114    --  non-relocatable DLL must be built.
 115
 116    ------------
 117    -- Syntax --
 118    ------------
 119
 120    procedure Syntax is
 121       procedure P (Str : String) renames Put_Line;
 122    begin
 123       P ("Usage : gnatdll [options] [list-of-files]");
 124       New_Line;
 125       P ("[list-of-files] a list of Ada libraries (.ali) and/or " &
 126          "foreign object files");
 127       New_Line;
 128       P ("[options] can be");
 129       P ("   -h            Help - display this message");
 130       P ("   -v            Verbose");
 131       P ("   -q            Quiet");
 132       P ("   -k            Remove @nn suffix from exported names");
 133       P ("   -g            Generate debugging information");
 134       P ("   -Idir         Specify source and object files search path");
 135       P ("   -l file       File contains a list-of-files to be added to "
 136          & "the library");
 137       P ("   -e file       Definition file containing exports");
 138       P ("   -d file       Put objects in the relocatable dynamic "
 139          & "library <file>");
 140       P ("   -b addr       Set base address for the relocatable DLL");
 141       P ("                 default address is " & Default_DLL_Address);
 142       P ("   -a[addr]      Build non-relocatable DLL at address <addr>");
 143       P ("                 if <addr> is not specified use "
 144          & Default_DLL_Address);
 145       P ("   -m            Generate map file");
 146       P ("   -n            No-import - do not create the import library");
 147       P ("   -bargs opts   opts are passed to the binder");
 148       P ("   -largs opts   opts are passed to the linker");
 149    end Syntax;
 150
 151    -----------
 152    -- Check --
 153    -----------
 154
 155    procedure Check (Filename : in String) is
 156    begin
 157       if not Is_Regular_File (Filename) then
 158          Raise_Exception
 159            (Context_Error'Identity, "Error: " & Filename & " not found.");
 160       end if;
 161    end Check;
 162
 163    ------------------------
 164    -- Parse_Command_Line --
 165    ------------------------
 166
 167    procedure Parse_Command_Line is
 168
 169       use GNAT.Command_Line;
 170
 171       procedure Add_File (Filename : in String);
 172       --  Add one file to the list of file to handle
 173
 174       procedure Add_Files_From_List (List_Filename : in String);
 175       --  Add the files listed in List_Filename (one by line) to the list
 176       --  of file to handle
 177
 178       Max_Files   : constant := 5_000;
 179       Max_Options : constant :=   100;
 180       --  These are arbitrary limits, a better way will be to use linked list.
 181       --  No, a better choice would be to use tables ???
 182       --  Limits on what???
 183
 184       Ofiles : Argument_List (1 .. Max_Files);
 185       O      : Positive := Ofiles'First;
 186       --  List of object files to put in the library. O is the next entry
 187       --  to be used.
 188
 189       Afiles : Argument_List (1 .. Max_Files);
 190       A      : Positive := Afiles'First;
 191       --  List of ALI files. A is the next entry to be used
 192
 193       Gopts  : Argument_List (1 .. Max_Options);
 194       G      : Positive := Gopts'First;
 195       --  List of gcc options. G is the next entry to be used
 196
 197       Lopts  : Argument_List (1 .. Max_Options);
 198       L      : Positive := Lopts'First;
 199       --  A list of -largs options (L is next entry to be used)
 200
 201       Bopts  : Argument_List (1 .. Max_Options);
 202       B      : Positive := Bopts'First;
 203       --  A list of -bargs options (B is next entry to be used)
 204
 205       Build_Import : Boolean := True;
 206       --  Set to Fals if option -n if specified (no-import)
 207
 208       --------------
 209       -- Add_File --
 210       --------------
 211
 212       procedure Add_File (Filename : in String) is
 213       begin
 214          if Is_Ali (Filename) then
 215
 216             Check (Filename);
 217
 218             --  Record it to generate the binder program when
 219             --  building dynamic library
 220
 221             Afiles (A) := new String'(Filename);
 222             A := A + 1;
 223
 224          elsif Is_Obj (Filename) then
 225
 226             Check (Filename);
 227
 228             --  Just record this object file
 229
 230             Ofiles (O) := new String'(Filename);
 231             O := O + 1;
 232
 233          else
 234             --  Unknown file type
 235
 236             Raise_Exception
 237               (Syntax_Error'Identity,
 238                "don't know what to do with " & Filename & " !");
 239          end if;
 240       end Add_File;
 241
 242       -------------------------
 243       -- Add_Files_From_List --
 244       -------------------------
 245
 246       procedure Add_Files_From_List (List_Filename : in String) is
 247          File   : File_Type;
 248          Buffer : String (1 .. 500);
 249          Last   : Natural;
 250
 251       begin
 252          Open (File, In_File, List_Filename);
 253
 254          while not End_Of_File (File) loop
 255             Get_Line (File, Buffer, Last);
 256             Add_File (Buffer (1 .. Last));
 257          end loop;
 258
 259          Close (File);
 260       end Add_Files_From_List;
 261
 262    --  Start of processing for Parse_Command_Line
 263
 264    begin
 265       Initialize_Option_Scan ('-', False, "bargs largs");
 266
 267       --  scan gnatdll switches
 268
 269       loop
 270          case Getopt ("g h v q k a? b: d: e: l: n m I:") is
 271
 272             when ASCII.Nul =>
 273                exit;
 274
 275             when 'h' =>
 276                Help := True;
 277
 278             when 'g' =>
 279                Gopts (G) := new String'("-g");
 280                G := G + 1;
 281
 282             when 'v' =>
 283
 284                --  Turn verbose mode on
 285
 286                MDLL.Verbose := True;
 287                if MDLL.Quiet then
 288                   Raise_Exception
 289                     (Syntax_Error'Identity,
 290                      "impossible to use -q and -v together.");
 291                end if;
 292
 293             when 'q' =>
 294
 295                --  Turn quiet mode on
 296
 297                MDLL.Quiet := True;
 298                if MDLL.Verbose then
 299                   Raise_Exception
 300                     (Syntax_Error'Identity,
 301                      "impossible to use -v and -q together.");
 302                end if;
 303
 304             when 'k' =>
 305
 306                MDLL.Kill_Suffix := True;
 307
 308             when 'a' =>
 309
 310                if Parameter = "" then
 311
 312                   --  Default address for a relocatable dynamic library.
 313                   --  address for a non relocatable dynamic library.
 314
 315                   DLL_Address := To_Unbounded_String (Default_DLL_Address);
 316
 317                else
 318                   DLL_Address := To_Unbounded_String (Parameter);
 319                end if;
 320
 321                Must_Build_Relocatable := False;
 322
 323             when 'b' =>
 324
 325                DLL_Address := To_Unbounded_String (Parameter);
 326
 327                Must_Build_Relocatable := True;
 328
 329             when 'e' =>
 330
 331                Def_Filename := To_Unbounded_String (Parameter);
 332
 333             when 'd' =>
 334
 335                --  Build a non relocatable DLL
 336
 337                Lib_Filename := To_Unbounded_String (Parameter);
 338
 339                if Def_Filename = Null_Unbounded_String then
 340                   Def_Filename := To_Unbounded_String
 341                     (Ext_To (Parameter, "def"));
 342                end if;
 343
 344                Build_Mode := Dynamic_Lib;
 345
 346             when 'm' =>
 347
 348                Gen_Map_File := True;
 349
 350             when 'n' =>
 351
 352                Build_Import := False;
 353
 354             when 'l' =>
 355                List_Filename := To_Unbounded_String (Parameter);
 356
 357             when 'I' =>
 358                Gopts (G) := new String'("-I" & Parameter);
 359                G := G + 1;
 360
 361             when others =>
 362                raise Invalid_Switch;
 363          end case;
 364       end loop;
 365
 366       --  Get parameters
 367
 368       loop
 369          declare
 370             File : constant String := Get_Argument (Do_Expansion => True);
 371          begin
 372             exit when File'Length = 0;
 373             Add_File (File);
 374          end;
 375       end loop;
 376
 377       --  Get largs parameters
 378
 379       Goto_Section ("largs");
 380
 381       loop
 382          case Getopt ("*") is
 383             when ASCII.Nul =>
 384                exit;
 385
 386             when others =>
 387                Lopts (L) := new String'(Full_Switch);
 388                L := L + 1;
 389          end case;
 390       end loop;
 391
 392       --  Get bargs parameters
 393
 394       Goto_Section ("bargs");
 395
 396       loop
 397          case Getopt ("*") is
 398
 399             when ASCII.Nul =>
 400                exit;
 401
 402             when others =>
 403                Bopts (B) := new String'(Full_Switch);
 404                B := B + 1;
 405
 406          end case;
 407       end loop;
 408
 409       --  if list filename has been specified, parse it
 410
 411       if List_Filename /= Null_Unbounded_String then
 412          Add_Files_From_List (To_String (List_Filename));
 413       end if;
 414
 415       --  Check if the set of parameters are compatible
 416
 417       if Build_Mode = Nil and then not Help and then not MDLL.Verbose then
 418          Raise_Exception (Syntax_Error'Identity, "nothing to do.");
 419       end if;
 420
 421       --  -n option but no file specified
 422
 423       if not Build_Import
 424         and then A = Afiles'First
 425         and then O = Ofiles'First
 426       then
 427          Raise_Exception
 428            (Syntax_Error'Identity,
 429             "-n specified but there are no objects to build the library.");
 430       end if;
 431
 432       --  Check if we want to build an import library (option -e and
 433       --  no file specified)
 434
 435       if Build_Mode = Dynamic_Lib
 436         and then A = Afiles'First
 437         and then O = Ofiles'First
 438       then
 439          Build_Mode := Import_Lib;
 440       end if;
 441
 442       --  If map file is to be generated, add linker option here
 443
 444       if Gen_Map_File and then Build_Mode = Import_Lib then
 445          Raise_Exception
 446            (Syntax_Error'Identity,
 447             "Can't generate a map file for an import library.");
 448       end if;
 449
 450       --  Check if only a dynamic library must be built
 451
 452       if Build_Mode = Dynamic_Lib and then not Build_Import then
 453          Build_Mode := Dynamic_Lib_Only;
 454       end if;
 455
 456       if O /= Ofiles'First then
 457          Objects_Files := new Argument_List'(Ofiles (1 .. O - 1));
 458       end if;
 459
 460       if A /= Afiles'First then
 461          Ali_Files     := new Argument_List'(Afiles (1 .. A - 1));
 462       end if;
 463
 464       if G /= Gopts'First then
 465          Options       := new Argument_List'(Gopts (1 .. G - 1));
 466       end if;
 467
 468       if L /= Lopts'First then
 469          Largs_Options := new Argument_List'(Lopts (1 .. L - 1));
 470       end if;
 471
 472       if B /= Bopts'First then
 473          Bargs_Options := new Argument_List'(Bopts (1 .. B - 1));
 474       end if;
 475
 476    exception
 477
 478       when Invalid_Switch    =>
 479          Raise_Exception
 480            (Syntax_Error'Identity,
 481             Message => "Invalid Switch " & Full_Switch);
 482
 483       when Invalid_Parameter =>
 484          Raise_Exception
 485            (Syntax_Error'Identity,
 486             Message => "No parameter for " & Full_Switch);
 487
 488    end Parse_Command_Line;
 489
 490    -------------------
 491    -- Check_Context --
 492    -------------------
 493
 494    procedure Check_Context is
 495    begin
 496
 497       Check (To_String (Def_Filename));
 498
 499       --  Check that each object file specified exists and raise exception
 500       --  Context_Error if it does not.
 501
 502       for F in Objects_Files'Range loop
 503          Check (Objects_Files (F).all);
 504       end loop;
 505    end Check_Context;
 506
 507 --  Start of processing for Gnatdll
 508
 509 begin
 510    if Ada.Command_Line.Argument_Count = 0 then
 511       Help := True;
 512    else
 513       Parse_Command_Line;
 514    end if;
 515
 516    if MDLL.Verbose or else Help then
 517       New_Line;
 518       Put_Line ("GNATDLL " & Version & " - Dynamic Libraries Builder");
 519       New_Line;
 520    end if;
 521
 522    MDLL.Utl.Locate;
 523
 524    if Help
 525      or else (MDLL.Verbose and then Ada.Command_Line.Argument_Count = 1)
 526    then
 527       Syntax;
 528    else
 529       Check_Context;
 530
 531       case Build_Mode is
 532
 533          when Import_Lib =>
 534             MDLL.Build_Import_Library
 535               (To_String (Lib_Filename),
 536                To_String (Def_Filename));
 537
 538          when Dynamic_Lib =>
 539             MDLL.Build_Dynamic_Library
 540               (Objects_Files.all,
 541                Ali_Files.all,
 542                Options.all,
 543                Bargs_Options.all,
 544                Largs_Options.all,
 545                To_String (Lib_Filename),
 546                To_String (Def_Filename),
 547                To_String (DLL_Address),
 548                Build_Import => True,
 549                Relocatable  => Must_Build_Relocatable,
 550                Map_File     => Gen_Map_File);
 551
 552          when Dynamic_Lib_Only =>
 553             MDLL.Build_Dynamic_Library
 554               (Objects_Files.all,
 555                Ali_Files.all,
 556                Options.all,
 557                Bargs_Options.all,
 558                Largs_Options.all,
 559                To_String (Lib_Filename),
 560                To_String (Def_Filename),
 561                To_String (DLL_Address),
 562                Build_Import => False,
 563                Relocatable  => Must_Build_Relocatable,
 564                Map_File     => Gen_Map_File);
 565
 566          when Nil =>
 567             null;
 568       end case;
 569    end if;
 570
 571    Set_Exit_Status (Success);
 572
 573 exception
 574
 575    when SE : Syntax_Error =>
 576       Put_Line ("Syntax error : " & Exception_Message (SE));
 577       New_Line;
 578       Syntax;
 579       Set_Exit_Status (Failure);
 580
 581    when E : MDLL.Tools_Error | Context_Error =>
 582       Put_Line (Exception_Message (E));
 583       Set_Exit_Status (Failure);
 584
 585    when others =>
 586       Put_Line ("gnatdll: INTERNAL ERROR. Please report");
 587       Set_Exit_Status (Failure);
 588
 589 end Gnatdll;