gcc-4_6-mobile-vtable-security/gcc/ada/switch-m.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             S W I T C H - M                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001-2010, 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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Debug;    use Debug;
  27 with Makeutl;  use Makeutl;
  28 with Osint;    use Osint;
  29 with Opt;      use Opt;
  30 with Prj;      use Prj;
  31 with Prj.Env;  use Prj.Env;
  32 with Table;
  33
  34 with System.Multiprocessors; use System.Multiprocessors;
  35
  36 package body Switch.M is
  37
  38    package Normalized_Switches is new Table.Table
  39      (Table_Component_Type => String_Access,
  40       Table_Index_Type     => Integer,
  41       Table_Low_Bound      => 1,
  42       Table_Initial        => 20,
  43       Table_Increment      => 100,
  44       Table_Name           => "Switch.M.Normalized_Switches");
  45    --  This table is used to keep the normalized switches, so that they may be
  46    --  reused for subsequent invocations of Normalize_Compiler_Switches with
  47    --  similar switches.
  48
  49    Initial_Number_Of_Switches : constant := 10;
  50
  51    Global_Switches : Argument_List_Access := null;
  52    --  Used by function Normalize_Compiler_Switches
  53
  54    ---------------------------------
  55    -- Normalize_Compiler_Switches --
  56    ---------------------------------
  57
  58    procedure Normalize_Compiler_Switches
  59      (Switch_Chars : String;
  60       Switches     : in out Argument_List_Access;
  61       Last         : out Natural)
  62    is
  63       Switch_Starts_With_Gnat : Boolean;
  64
  65       Ptr : Integer := Switch_Chars'First;
  66       Max : constant Integer := Switch_Chars'Last;
  67       C   : Character := ' ';
  68
  69       Storing      : String := Switch_Chars;
  70       First_Stored : Positive := Ptr + 1;
  71       Last_Stored  : Positive := First_Stored;
  72
  73       procedure Add_Switch_Component (S : String);
  74       --  Add a new String_Access component in Switches. If a string equal
  75       --  to S is already stored in the table Normalized_Switches, use it.
  76       --  Otherwise add a new component to the table.
  77
  78       --------------------------
  79       -- Add_Switch_Component --
  80       --------------------------
  81
  82       procedure Add_Switch_Component (S : String) is
  83       begin
  84          --  If Switches is null, allocate a new array
  85
  86          if Switches = null then
  87             Switches := new Argument_List (1 .. Initial_Number_Of_Switches);
  88
  89          --  Otherwise, if Switches is full, extend it
  90
  91          elsif Last = Switches'Last then
  92             declare
  93                New_Switches : constant Argument_List_Access :=
  94                                 new Argument_List
  95                                       (1 .. Switches'Length + Switches'Length);
  96             begin
  97                New_Switches (1 .. Switches'Length) := Switches.all;
  98                Last := Switches'Length;
  99                Switches := New_Switches;
 100             end;
 101          end if;
 102
 103          --  If this is the first switch, Last designates the first component
 104
 105          if Last = 0 then
 106             Last := Switches'First;
 107          else
 108             Last := Last + 1;
 109          end if;
 110
 111          --  Look into the table Normalized_Switches for a similar string.
 112          --  If one is found, put it at the added component, and return.
 113
 114          for Index in 1 .. Normalized_Switches.Last loop
 115             if S = Normalized_Switches.Table (Index).all then
 116                Switches (Last) := Normalized_Switches.Table (Index);
 117                return;
 118             end if;
 119          end loop;
 120
 121          --  No string equal to S was found in the table Normalized_Switches.
 122          --  Add a new component in the table.
 123
 124          Switches (Last) := new String'(S);
 125          Normalized_Switches.Append (Switches (Last));
 126       end Add_Switch_Component;
 127
 128    --  Start of processing for Normalize_Compiler_Switches
 129
 130    begin
 131       Last := 0;
 132
 133       if Ptr = Max or else Switch_Chars (Ptr) /= '-' then
 134          return;
 135       end if;
 136
 137       Ptr := Ptr + 1;
 138
 139       Switch_Starts_With_Gnat :=
 140          Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat";
 141
 142       if Switch_Starts_With_Gnat then
 143          Ptr := Ptr + 4;
 144          First_Stored := Ptr;
 145       end if;
 146
 147       while Ptr <= Max loop
 148          C := Switch_Chars (Ptr);
 149
 150          --  Processing for a switch
 151
 152          case Switch_Starts_With_Gnat is
 153
 154             when False =>
 155
 156                --  All switches that don't start with -gnat stay as is,
 157                --  except -pg, -Wall, -k8, -w
 158
 159                if Switch_Chars = "-pg" or else Switch_Chars = "-p" then
 160
 161                   --  The gcc driver converts -pg to -p, so that is what
 162                   --  is stored in the ALI file.
 163
 164                   Add_Switch_Component ("-p");
 165
 166                elsif Switch_Chars = "-Wall" then
 167
 168                   --  The gcc driver adds -gnatwa when -Wall is used
 169
 170                   Add_Switch_Component ("-gnatwa");
 171                   Add_Switch_Component ("-Wall");
 172
 173                elsif Switch_Chars = "-k8" then
 174
 175                   --  The gcc driver transforms -k8 into -gnatk8
 176
 177                   Add_Switch_Component ("-gnatk8");
 178
 179                elsif Switch_Chars = "-w" then
 180
 181                   --  The gcc driver adds -gnatws when -w is used
 182
 183                   Add_Switch_Component ("-gnatws");
 184                   Add_Switch_Component ("-w");
 185
 186                elsif Switch_Chars'Length > 6
 187                  and then
 188                    Switch_Chars (Switch_Chars'First .. Switch_Chars'First + 5)
 189                                                              = "--RTS="
 190                then
 191                   Add_Switch_Component (Switch_Chars);
 192
 193                   --  When --RTS=mtp is used, the gcc driver adds -mrtp
 194
 195                   if Switch_Chars = "--RTS=mtp" then
 196                      Add_Switch_Component ("-mrtp");
 197                   end if;
 198
 199                --  Take only into account switches that are transmitted to
 200                --  gnat1 by the gcc driver and stored by gnat1 in the ALI file.
 201
 202                else
 203                   case C is
 204                      when 'O' | 'W' | 'w' | 'f' | 'd' | 'g' | 'm' =>
 205                         Add_Switch_Component (Switch_Chars);
 206
 207                      when others =>
 208                         null;
 209                   end case;
 210                end if;
 211
 212                return;
 213
 214             when True =>
 215
 216                case C is
 217
 218                   --  One-letter switches
 219
 220                   when 'a' | 'A' | 'b' | 'B' | 'c' | 'C' | 'E' | 'f' |
 221                        'F' | 'g' | 'h' | 'H' | 'I' | 'L' | 'n' | 'N' |
 222                        'o' | 'p' | 'P' | 'q' | 'Q' | 'r' | 's' | 'S' |
 223                        't' | 'u' | 'U' | 'v' | 'x' | 'X' | 'Z' =>
 224                      Storing (First_Stored) := C;
 225                      Add_Switch_Component
 226                        (Storing (Storing'First .. First_Stored));
 227                      Ptr := Ptr + 1;
 228
 229                   --  One-letter switches followed by a positive number
 230
 231                   when 'D' | 'G' | 'j' | 'k' | 'm' | 'T' =>
 232                      Storing (First_Stored) := C;
 233                      Last_Stored := First_Stored;
 234
 235                      if Ptr <= Max and then Switch_Chars (Ptr) = '=' then
 236                         Ptr := Ptr + 1;
 237                      end if;
 238
 239                      loop
 240                         Ptr := Ptr + 1;
 241                         exit when Ptr > Max
 242                           or else Switch_Chars (Ptr) not in '0' .. '9';
 243                         Last_Stored := Last_Stored + 1;
 244                         Storing (Last_Stored) := Switch_Chars (Ptr);
 245                      end loop;
 246
 247                      Add_Switch_Component
 248                        (Storing (Storing'First .. Last_Stored));
 249
 250                   when 'd' =>
 251                      Storing (First_Stored) := 'd';
 252
 253                      while Ptr < Max loop
 254                         Ptr := Ptr + 1;
 255                         C := Switch_Chars (Ptr);
 256                         exit when C = ASCII.NUL or else C = '/'
 257                           or else C = '-';
 258
 259                         if C in '1' .. '9' or else
 260                            C in 'a' .. 'z' or else
 261                            C in 'A' .. 'Z'
 262                         then
 263                            Storing (First_Stored + 1) := C;
 264                            Add_Switch_Component
 265                              (Storing (Storing'First .. First_Stored + 1));
 266
 267                         else
 268                            Last := 0;
 269                            return;
 270                         end if;
 271                      end loop;
 272
 273                      return;
 274
 275                   when 'e' =>
 276
 277                      --  Some of the gnate... switches are not stored
 278
 279                      Storing (First_Stored) := 'e';
 280                      Ptr := Ptr + 1;
 281
 282                      if Ptr > Max then
 283                         Last := 0;
 284                         return;
 285
 286                      else
 287                         case Switch_Chars (Ptr) is
 288
 289                            when 'D' =>
 290                               Storing (First_Stored + 1 ..
 291                                          First_Stored + Max - Ptr + 1) :=
 292                                   Switch_Chars (Ptr .. Max);
 293                               Add_Switch_Component
 294                                 (Storing (Storing'First ..
 295                                    First_Stored + Max - Ptr + 1));
 296                               Ptr := Max + 1;
 297
 298                            when 'G' =>
 299                               Ptr := Ptr + 1;
 300                               Add_Switch_Component ("-gnateG");
 301
 302                            when 'I' =>
 303                               Ptr := Ptr + 1;
 304
 305                               declare
 306                                  First : constant Positive := Ptr - 1;
 307                               begin
 308                                  if Ptr <= Max and then
 309                                    Switch_Chars (Ptr) = '='
 310                                  then
 311                                     Ptr := Ptr + 1;
 312                                  end if;
 313
 314                                  while Ptr <= Max and then
 315                                        Switch_Chars (Ptr) in '0' .. '9'
 316                                  loop
 317                                     Ptr := Ptr + 1;
 318                                  end loop;
 319
 320                                  Storing (First_Stored + 1 ..
 321                                             First_Stored + Ptr - First) :=
 322                                      Switch_Chars (First .. Ptr - 1);
 323                                  Add_Switch_Component
 324                                    (Storing (Storing'First ..
 325                                       First_Stored + Ptr - First));
 326                               end;
 327
 328                            when 'p' =>
 329                               Ptr := Ptr + 1;
 330
 331                               if Ptr = Max then
 332                                  Last := 0;
 333                                  return;
 334                               end if;
 335
 336                               if Switch_Chars (Ptr) = '=' then
 337                                  Ptr := Ptr + 1;
 338                               end if;
 339
 340                                  --  To normalize, always put a '=' after
 341                                  --  -gnatep. Because that could lengthen the
 342                                  --  switch string, declare a local variable.
 343
 344                               declare
 345                                  To_Store : String (1 .. Max - Ptr + 9);
 346                               begin
 347                                  To_Store (1 .. 8) := "-gnatep=";
 348                                  To_Store (9 .. Max - Ptr + 9) :=
 349                                    Switch_Chars (Ptr .. Max);
 350                                  Add_Switch_Component (To_Store);
 351                               end;
 352
 353                               return;
 354
 355                            when 'S' =>
 356                               Ptr := Ptr + 1;
 357                               Add_Switch_Component ("-gnateS");
 358
 359                            when others =>
 360                               Last := 0;
 361                               return;
 362                         end case;
 363                      end if;
 364
 365                   when 'i' =>
 366                      Storing (First_Stored) := 'i';
 367
 368                      Ptr := Ptr + 1;
 369
 370                      if Ptr > Max then
 371                         Last := 0;
 372                         return;
 373                      end if;
 374
 375                      C := Switch_Chars (Ptr);
 376
 377                      if C in '1' .. '5'
 378                        or else C = '8'
 379                        or else C = 'p'
 380                        or else C = 'f'
 381                        or else C = 'n'
 382                        or else C = 'w'
 383                      then
 384                         Storing (First_Stored + 1) := C;
 385                         Add_Switch_Component
 386                           (Storing (Storing'First .. First_Stored + 1));
 387                         Ptr := Ptr + 1;
 388
 389                      else
 390                         Last := 0;
 391                         return;
 392                      end if;
 393
 394                   --  -gnatl may be -gnatl=<file name>
 395
 396                   when 'l' =>
 397                      Ptr := Ptr + 1;
 398
 399                      if Ptr > Max or else Switch_Chars (Ptr) /= '=' then
 400                         Add_Switch_Component ("-gnatl");
 401
 402                      else
 403                         Add_Switch_Component
 404                           ("-gnatl" & Switch_Chars (Ptr .. Max));
 405                         return;
 406                      end if;
 407
 408                   --  -gnatR may be followed by '0', '1', '2' or '3',
 409                   --  then by 's'
 410
 411                   when 'R' =>
 412                      Last_Stored := First_Stored;
 413                      Storing (Last_Stored) := 'R';
 414                      Ptr := Ptr + 1;
 415
 416                      if Ptr <= Max
 417                        and then Switch_Chars (Ptr) in '0' .. '9'
 418                      then
 419                         C := Switch_Chars (Ptr);
 420
 421                         if C in '4' .. '9' then
 422                            Last := 0;
 423                            return;
 424
 425                         else
 426                            Last_Stored := Last_Stored + 1;
 427                            Storing (Last_Stored) := C;
 428                            Ptr := Ptr + 1;
 429
 430                            if Ptr <= Max
 431                              and then Switch_Chars (Ptr) = 's'
 432                            then
 433                               Last_Stored := Last_Stored + 1;
 434                               Storing (Last_Stored) := 's';
 435                               Ptr := Ptr + 1;
 436                            end if;
 437                         end if;
 438                      end if;
 439
 440                      Add_Switch_Component
 441                        (Storing (Storing'First .. Last_Stored));
 442
 443                   --  -gnatWx, x = 'h'. 'u', 's', 'e', '8' or 'b'
 444
 445                   when 'W' =>
 446                      Storing (First_Stored) := 'W';
 447                      Ptr := Ptr + 1;
 448
 449                      if Ptr <= Max then
 450                         case Switch_Chars (Ptr) is
 451                            when 'h' | 'u' | 's' | 'e' | '8' | 'b' =>
 452                               Storing (First_Stored + 1) := Switch_Chars (Ptr);
 453                               Add_Switch_Component
 454                                 (Storing (Storing'First .. First_Stored + 1));
 455                               Ptr := Ptr + 1;
 456
 457                            when others =>
 458                               Last := 0;
 459                               return;
 460                         end case;
 461                      end if;
 462
 463                   --  Multiple switches
 464
 465                   when 'V' | 'w' | 'y' =>
 466                      Storing (First_Stored) := C;
 467                      Ptr := Ptr + 1;
 468
 469                      if Ptr > Max then
 470                         if C = 'y' then
 471                            Add_Switch_Component
 472                              (Storing (Storing'First .. First_Stored));
 473
 474                         else
 475                            Last := 0;
 476                            return;
 477                         end if;
 478                      end if;
 479
 480                      --  Loop through remaining switch characters in string
 481
 482                      while Ptr <= Max loop
 483                         C := Switch_Chars (Ptr);
 484                         Ptr := Ptr + 1;
 485
 486                         --  -gnatyMxxx
 487
 488                         if C = 'M' and then Storing (First_Stored) = 'y' then
 489                            Last_Stored := First_Stored + 1;
 490                            Storing (Last_Stored) := 'M';
 491                            while Ptr <= Max loop
 492                               C := Switch_Chars (Ptr);
 493                               exit when C not in '0' .. '9';
 494                               Last_Stored := Last_Stored + 1;
 495                               Storing (Last_Stored) := C;
 496                               Ptr := Ptr + 1;
 497                            end loop;
 498
 499                            --  If there is no digit after -gnatyM,
 500                            --  the switch is invalid.
 501
 502                            if Last_Stored = First_Stored + 1 then
 503                               Last := 0;
 504                               return;
 505
 506                            else
 507                               Add_Switch_Component
 508                                 (Storing (Storing'First .. Last_Stored));
 509                            end if;
 510
 511                         --  --gnatx.x
 512
 513                         elsif C = '.' and then Ptr <= Max then
 514                            Storing (First_Stored + 1) := '.';
 515                            Storing (First_Stored + 2) := Switch_Chars (Ptr);
 516                            Ptr := Ptr + 1;
 517                            Add_Switch_Component
 518                              (Storing (Storing'First .. First_Stored + 2));
 519
 520                         --  All other switches are -gnatxx
 521
 522                         else
 523                            Storing (First_Stored + 1) := C;
 524                            Add_Switch_Component
 525                              (Storing (Storing'First .. First_Stored + 1));
 526                         end if;
 527                      end loop;
 528
 529                   --  -gnat95 -gnat05
 530
 531                   when '0' | '9' =>
 532                      Last_Stored := First_Stored;
 533                      Storing (Last_Stored) := C;
 534                      Ptr := Ptr + 1;
 535
 536                      if Ptr /= Max or else Switch_Chars (Ptr) /= '5' then
 537
 538                         --  Invalid switch
 539
 540                         Last := 0;
 541                         return;
 542
 543                      else
 544                         Last_Stored := Last_Stored + 1;
 545                         Storing (Last_Stored) := '5';
 546                         Add_Switch_Component
 547                           (Storing (Storing'First .. Last_Stored));
 548                         Ptr := Ptr + 1;
 549                      end if;
 550
 551                   --  -gnat83
 552
 553                   when '8' =>
 554                      Last_Stored := First_Stored;
 555                      Storing (Last_Stored) := '8';
 556                      Ptr := Ptr + 1;
 557
 558                      if Ptr /= Max or else Switch_Chars (Ptr) /= '3' then
 559
 560                         --  Invalid switch
 561
 562                         Last := 0;
 563                         return;
 564
 565                      else
 566                         Last_Stored := Last_Stored + 1;
 567                         Storing (Last_Stored) := '3';
 568                         Add_Switch_Component
 569                           (Storing (Storing'First .. Last_Stored));
 570                         Ptr := Ptr + 1;
 571                      end if;
 572
 573                   --  Not a valid switch
 574
 575                   when others =>
 576                      Last := 0;
 577                      return;
 578
 579                end case;
 580
 581          end case;
 582       end loop;
 583    end Normalize_Compiler_Switches;
 584
 585    function Normalize_Compiler_Switches
 586      (Switch_Chars : String) return Argument_List
 587    is
 588       Last : Natural;
 589
 590    begin
 591       Normalize_Compiler_Switches (Switch_Chars, Global_Switches, Last);
 592
 593       if Last = 0 then
 594          return (1 .. 0 => null);
 595       else
 596          return Global_Switches (Global_Switches'First .. Last);
 597       end if;
 598    end Normalize_Compiler_Switches;
 599
 600    ------------------------
 601    -- Scan_Make_Switches --
 602    ------------------------
 603
 604    procedure Scan_Make_Switches
 605      (Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
 606       Switch_Chars      : String;
 607       Success           : out Boolean)
 608    is
 609       Ptr : Integer          := Switch_Chars'First;
 610       Max : constant Integer := Switch_Chars'Last;
 611       C   : Character        := ' ';
 612
 613    begin
 614       --  Assume a good switch
 615
 616       Success := True;
 617
 618       --  Skip past the initial character (must be the switch character)
 619
 620       if Ptr = Max then
 621          Bad_Switch (Switch_Chars);
 622
 623       else
 624          Ptr := Ptr + 1;
 625       end if;
 626
 627       --  A little check, "gnat" at the start of a switch is for the compiler
 628
 629       if Switch_Chars'Length >= Ptr + 3
 630         and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"
 631       then
 632          Success := False;
 633          return;
 634       end if;
 635
 636       C := Switch_Chars (Ptr);
 637
 638       --  Multiple character switches
 639
 640       if Switch_Chars'Length > 2 then
 641          if Switch_Chars = "--create-missing-dirs" then
 642             Setup_Projects := True;
 643
 644          elsif Switch_Chars'Length > Subdirs_Option'Length
 645            and then
 646              Switch_Chars
 647                (Switch_Chars'First ..
 648                 Switch_Chars'First + Subdirs_Option'Length - 1) =
 649                                                             Subdirs_Option
 650          then
 651             Subdirs :=
 652               new String'
 653                 (Switch_Chars
 654                   (Switch_Chars'First + Subdirs_Option'Length ..
 655                    Switch_Chars'Last));
 656
 657          elsif Switch_Chars = Makeutl.Unchecked_Shared_Lib_Imports then
 658             Opt.Unchecked_Shared_Lib_Imports := True;
 659
 660          elsif Switch_Chars = Makeutl.Single_Compile_Per_Obj_Dir_Switch then
 661             Opt.One_Compilation_Per_Obj_Dir := True;
 662
 663          elsif Switch_Chars (Ptr) = '-' then
 664             Bad_Switch (Switch_Chars);
 665
 666          elsif Switch_Chars'Length > 3
 667            and then Switch_Chars (Ptr .. Ptr + 1) = "aP"
 668          then
 669             Add_Directories
 670               (Project_Node_Tree.Project_Path,
 671                Switch_Chars (Ptr + 2 .. Switch_Chars'Last));
 672
 673          elsif C = 'v' and then Switch_Chars'Length = 3 then
 674             Ptr := Ptr + 1;
 675             Verbose_Mode := True;
 676
 677             case Switch_Chars (Ptr) is
 678                when 'l' =>
 679                   Verbosity_Level := Opt.Low;
 680
 681                when 'm' =>
 682                   Verbosity_Level := Opt.Medium;
 683
 684                when 'h' =>
 685                   Verbosity_Level := Opt.High;
 686
 687                when others =>
 688                   Success := False;
 689             end case;
 690
 691          elsif C = 'd' then
 692
 693             --  Note: for the debug switch, the remaining characters in this
 694             --  switch field must all be debug flags, since all valid switch
 695             --  characters are also valid debug characters. This switch is not
 696             --  documented on purpose because it is only used by the
 697             --  implementors.
 698
 699             --  Loop to scan out debug flags
 700
 701             while Ptr < Max loop
 702                Ptr := Ptr + 1;
 703                C := Switch_Chars (Ptr);
 704
 705                if C in 'a' .. 'z' or else C in 'A' .. 'Z' then
 706                   Set_Debug_Flag (C);
 707                else
 708                   Bad_Switch (Switch_Chars);
 709                end if;
 710             end loop;
 711
 712          elsif C = 'e' then
 713             Ptr := Ptr + 1;
 714
 715             case Switch_Chars (Ptr) is
 716
 717                --  Processing for eI switch
 718
 719                when 'I' =>
 720                   Ptr := Ptr + 1;
 721                   Scan_Pos (Switch_Chars, Max, Ptr, Main_Index, C);
 722
 723                   if Ptr <= Max then
 724                      Bad_Switch (Switch_Chars);
 725                   end if;
 726
 727                --  Processing for eL switch
 728
 729                when 'L' =>
 730                   if Ptr /= Max then
 731                      Bad_Switch (Switch_Chars);
 732
 733                   else
 734                      Follow_Links_For_Files := True;
 735                      Follow_Links_For_Dirs  := True;
 736                   end if;
 737
 738                --  Processing for eS switch
 739
 740                when 'S' =>
 741                   if Ptr /= Max then
 742                      Bad_Switch (Switch_Chars);
 743
 744                   else
 745                      Commands_To_Stdout := True;
 746                   end if;
 747
 748                when others =>
 749                   Bad_Switch (Switch_Chars);
 750             end case;
 751
 752          elsif C = 'j' then
 753             Ptr := Ptr + 1;
 754
 755             declare
 756                Max_Proc : Nat;
 757
 758             begin
 759                Scan_Nat (Switch_Chars, Max, Ptr, Max_Proc, C);
 760
 761                if Ptr <= Max then
 762                   Bad_Switch (Switch_Chars);
 763
 764                else
 765                   if Max_Proc = 0 then
 766                      Max_Proc := Nat (Number_Of_CPUs);
 767
 768                      if Max_Proc = 0 then
 769                         Max_Proc := 1;
 770                      end if;
 771                   end if;
 772
 773                   Maximum_Processes := Positive (Max_Proc);
 774                end if;
 775             end;
 776
 777          elsif C = 'w' and then Switch_Chars'Length = 3 then
 778             Ptr := Ptr + 1;
 779
 780             if Switch_Chars = "-we" then
 781                Warning_Mode := Treat_As_Error;
 782
 783             elsif Switch_Chars = "-wn" then
 784                Warning_Mode := Normal;
 785
 786             elsif Switch_Chars = "-ws" then
 787                Warning_Mode  := Suppress;
 788
 789             else
 790                Success := False;
 791             end if;
 792
 793          else
 794             Success := False;
 795          end if;
 796
 797       --  Single-character switches
 798
 799       else
 800          Check_Switch : begin
 801
 802             case C is
 803
 804                when 'a' =>
 805                   Check_Readonly_Files := True;
 806
 807                --  Processing for b switch
 808
 809                when 'b' =>
 810                   Bind_Only  := True;
 811                   Make_Steps := True;
 812
 813                --  Processing for B switch
 814
 815                when 'B' =>
 816                   Build_Bind_And_Link_Full_Project := True;
 817
 818                --  Processing for c switch
 819
 820                when 'c' =>
 821                   Compile_Only := True;
 822                   Make_Steps   := True;
 823
 824                --  Processing for C switch
 825
 826                when 'C' =>
 827                   Opt.Create_Mapping_File := True;
 828
 829                --  Processing for D switch
 830
 831                when 'D' =>
 832                   if Object_Directory_Present then
 833                      Osint.Fail ("duplicate -D switch");
 834
 835                   else
 836                      Object_Directory_Present := True;
 837                   end if;
 838
 839                --  Processing for f switch
 840
 841                when 'f' =>
 842                   Force_Compilations := True;
 843
 844                --  Processing for F switch
 845
 846                when 'F' =>
 847                   Full_Path_Name_For_Brief_Errors := True;
 848
 849                --  Processing for h switch
 850
 851                when 'h' =>
 852                   Usage_Requested := True;
 853
 854                --  Processing for i switch
 855
 856                when 'i' =>
 857                   In_Place_Mode := True;
 858
 859                --  Processing for j switch
 860
 861                when 'j' =>
 862                   --  -j not followed by a number is an error
 863
 864                   Bad_Switch (Switch_Chars);
 865
 866                --  Processing for k switch
 867
 868                when 'k' =>
 869                   Keep_Going := True;
 870
 871                --  Processing for l switch
 872
 873                when 'l' =>
 874                   Link_Only  := True;
 875                   Make_Steps := True;
 876
 877                --  Processing for M switch
 878
 879                when 'M' =>
 880                   List_Dependencies := True;
 881
 882                --  Processing for n switch
 883
 884                when 'n' =>
 885                   Do_Not_Execute := True;
 886
 887                --  Processing for o switch
 888
 889                when 'o' =>
 890                   if Output_File_Name_Present then
 891                      Osint.Fail ("duplicate -o switch");
 892                   else
 893                      Output_File_Name_Present := True;
 894                   end if;
 895
 896                --  Processing for p switch
 897
 898                when 'p' =>
 899                   Setup_Projects := True;
 900
 901                --  Processing for q switch
 902
 903                when 'q' =>
 904                   Quiet_Output := True;
 905
 906                --  Processing for R switch
 907
 908                when 'R' =>
 909                   Run_Path_Option := False;
 910
 911                --  Processing for s switch
 912
 913                when 's' =>
 914                   Ptr := Ptr + 1;
 915                   Check_Switches := True;
 916
 917                --  Processing for v switch
 918
 919                when 'v' =>
 920                   Verbose_Mode := True;
 921                   Verbosity_Level := Opt.High;
 922
 923                   --  Processing for x switch
 924
 925                when 'x' =>
 926                   External_Unit_Compilation_Allowed := True;
 927                   Use_Include_Path_File := True;
 928
 929                   --  Processing for z switch
 930
 931                when 'z' =>
 932                   No_Main_Subprogram := True;
 933
 934                   --  Any other small letter is an illegal switch
 935
 936                when others =>
 937                   if C in 'a' .. 'z' then
 938                      Bad_Switch (Switch_Chars);
 939
 940                   else
 941                      Success := False;
 942                   end if;
 943
 944             end case;
 945          end Check_Switch;
 946       end if;
 947    end Scan_Make_Switches;
 948
 949 end Switch.M;