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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                             S W I T C H - M                              --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 2001-2009, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------
 
with Debug;    use Debug;
with Makeutl;  use Makeutl;
with Osint;    use Osint;
with Opt;      use Opt;
with Prj;      use Prj;
with Prj.Ext;  use Prj.Ext;
with Table;
 
package body Switch.M is
 
   package Normalized_Switches is new Table.Table
     (Table_Component_Type => String_Access,
      Table_Index_Type     => Integer,
      Table_Low_Bound      => 1,
      Table_Initial        => 20,
      Table_Increment      => 100,
      Table_Name           => "Switch.M.Normalized_Switches");
   --  This table is used to keep the normalized switches, so that they may be
   --  reused for subsequent invocations of Normalize_Compiler_Switches with
   --  similar switches.
 
   Initial_Number_Of_Switches : constant := 10;
 
   Global_Switches : Argument_List_Access := null;
   --  Used by function Normalize_Compiler_Switches
 
   ---------------------------------
   -- Normalize_Compiler_Switches --
   ---------------------------------
 
   procedure Normalize_Compiler_Switches
     (Switch_Chars : String;
      Switches     : in out Argument_List_Access;
      Last         : out Natural)
   is
      Switch_Starts_With_Gnat : Boolean;
 
      Ptr : Integer := Switch_Chars'First;
      Max : constant Integer := Switch_Chars'Last;
      C   : Character := ' ';
 
      Storing      : String := Switch_Chars;
      First_Stored : Positive := Ptr + 1;
      Last_Stored  : Positive := First_Stored;
 
      procedure Add_Switch_Component (S : String);
      --  Add a new String_Access component in Switches. If a string equal
      --  to S is already stored in the table Normalized_Switches, use it.
      --  Other wise add a new component to the table.
 
      --------------------------
      -- Add_Switch_Component --
      --------------------------
 
      procedure Add_Switch_Component (S : String) is
      begin
         --  If Switches is null, allocate a new array
 
         if Switches = null then
            Switches := new Argument_List (1 .. Initial_Number_Of_Switches);
 
         --  Otherwise, if Switches is full, extend it
 
         elsif Last = Switches'Last then
            declare
               New_Switches : constant Argument_List_Access :=
                                new Argument_List
                                      (1 .. Switches'Length + Switches'Length);
            begin
               New_Switches (1 .. Switches'Length) := Switches.all;
               Last := Switches'Length;
               Switches := New_Switches;
            end;
         end if;
 
         --  If this is the first switch, Last designates the first component
 
         if Last = 0 then
            Last := Switches'First;
         else
            Last := Last + 1;
         end if;
 
         --  Look into the table Normalized_Switches for a similar string.
         --  If one is found, put it at the added component, and return.
 
         for Index in 1 .. Normalized_Switches.Last loop
            if S = Normalized_Switches.Table (Index).all then
               Switches (Last) := Normalized_Switches.Table (Index);
               return;
            end if;
         end loop;
 
         --  No string equal to S was found in the table Normalized_Switches.
         --  Add a new component in the table.
 
         Switches (Last) := new String'(S);
         Normalized_Switches.Append (Switches (Last));
      end Add_Switch_Component;
 
   --  Start of processing for Normalize_Compiler_Switches
 
   begin
      Last := 0;
 
      if Ptr = Max or else Switch_Chars (Ptr) /= '-' then
         return;
      end if;
 
      Ptr := Ptr + 1;
 
      Switch_Starts_With_Gnat :=
         Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat";
 
      if Switch_Starts_With_Gnat then
         Ptr := Ptr + 4;
         First_Stored := Ptr;
      end if;
 
      while Ptr <= Max loop
         C := Switch_Chars (Ptr);
 
         --  Processing for a switch
 
         case Switch_Starts_With_Gnat is
 
            when False =>
 
               --  All switches that don't start with -gnat stay as is,
               --  except -pg, -Wall, -k8, -w
 
               if Switch_Chars = "-pg" or else Switch_Chars = "-p" then
 
                  --  The gcc driver converts -pg to -p, so that is what
                  --  is stored in the ALI file.
 
                  Add_Switch_Component ("-p");
 
               elsif Switch_Chars = "-Wall" then
 
                  --  The gcc driver adds -gnatwa when -Wall is used
 
                  Add_Switch_Component ("-gnatwa");
                  Add_Switch_Component ("-Wall");
 
               elsif Switch_Chars = "-k8" then
 
                  --  The gcc driver transforms -k8 into -gnatk8
 
                  Add_Switch_Component ("-gnatk8");
 
               elsif Switch_Chars = "-w" then
 
                  --  The gcc driver adds -gnatws when -w is used
 
                  Add_Switch_Component ("-gnatws");
                  Add_Switch_Component ("-w");
 
               elsif Switch_Chars'Length > 6
                 and then
                   Switch_Chars (Switch_Chars'First .. Switch_Chars'First + 5)
                                                             = "--RTS="
               then
                  Add_Switch_Component (Switch_Chars);
 
                  --  When --RTS=mtp is used, the gcc driver adds -mrtp
 
                  if Switch_Chars = "--RTS=mtp" then
                     Add_Switch_Component ("-mrtp");
                  end if;
 
               --  Take only into account switches that are transmitted to
               --  gnat1 by the gcc driver and stored by gnat1 in the ALI file.
 
               else
                  case C is
                     when 'O' | 'W' | 'w' | 'f' | 'd' | 'g' | 'm' =>
                        Add_Switch_Component (Switch_Chars);
 
                     when others =>
                        null;
                  end case;
               end if;
 
               return;
 
            when True =>
 
               case C is
 
                  --  One-letter switches
 
                  when 'a' | 'A' | 'b' | 'c' | 'D' | 'E' | 'f' |
                    'F' | 'g' | 'h' | 'H' | 'k' | 'l' | 'L' | 'n' | 'N' |
                    'o' | 'O' | 'p' | 'P' | 'q' | 'Q' | 'r' | 's' | 't' |
                    'u' | 'U' | 'v' | 'x' | 'X' | 'Z' =>
                     Storing (First_Stored) := C;
                     Add_Switch_Component
                       (Storing (Storing'First .. First_Stored));
                     Ptr := Ptr + 1;
 
                  --  One-letter switches followed by a positive number
 
                  when 'm' | 'T' =>
                     Storing (First_Stored) := C;
                     Last_Stored := First_Stored;
 
                     loop
                        Ptr := Ptr + 1;
                        exit when Ptr > Max
                          or else Switch_Chars (Ptr) not in '0' .. '9';
                        Last_Stored := Last_Stored + 1;
                        Storing (Last_Stored) := Switch_Chars (Ptr);
                     end loop;
 
                     Add_Switch_Component
                       (Storing (Storing'First .. Last_Stored));
 
                  when 'd' =>
                     Storing (First_Stored) := 'd';
 
                     while Ptr < Max loop
                        Ptr := Ptr + 1;
                        C := Switch_Chars (Ptr);
                        exit when C = ASCII.NUL or else C = '/'
                          or else C = '-';
 
                        if C in '1' .. '9' or else
                           C in 'a' .. 'z' or else
                           C in 'A' .. 'Z'
                        then
                           Storing (First_Stored + 1) := C;
                           Add_Switch_Component
                             (Storing (Storing'First .. First_Stored + 1));
 
                        else
                           Last := 0;
                           return;
                        end if;
                     end loop;
 
                     return;
 
                  when 'e' =>
 
                     --  Store -gnateD, -gnatep= and -gnateG in the ALI file.
                     --  The other -gnate switches do not need to be stored.
 
                     Storing (First_Stored) := 'e';
                     Ptr := Ptr + 1;
 
                     if Ptr > Max
                       or else (Switch_Chars (Ptr) /= 'D'
                                 and then Switch_Chars (Ptr) /= 'G'
                                 and then Switch_Chars (Ptr) /= 'p')
                     then
                        Last := 0;
                        return;
                     end if;
 
                     --  Processing for -gnateD
 
                     if Switch_Chars (Ptr) = 'D' then
                        Storing (First_Stored + 1 ..
                                 First_Stored + Max - Ptr + 1) :=
                          Switch_Chars (Ptr .. Max);
                        Add_Switch_Component
                          (Storing (Storing'First ..
                                      First_Stored + Max - Ptr + 1));
 
                     --  Processing for -gnatep=
 
                     elsif Switch_Chars (Ptr) = 'p' then
                        Ptr := Ptr + 1;
 
                        if Ptr = Max then
                           Last := 0;
                           return;
                        end if;
 
                        if Switch_Chars (Ptr) = '=' then
                           Ptr := Ptr + 1;
                        end if;
 
                        --  To normalize, always put a '=' after -gnatep.
                        --  Because that could lengthen the switch string,
                        --  declare a local variable.
 
                        declare
                           To_Store : String (1 .. Max - Ptr + 9);
                        begin
                           To_Store (1 .. 8) := "-gnatep=";
                           To_Store (9 .. Max - Ptr + 9) :=
                             Switch_Chars (Ptr .. Max);
                           Add_Switch_Component (To_Store);
                        end;
 
                     elsif Switch_Chars (Ptr) = 'G' then
                        Add_Switch_Component ("-gnateG");
                     end if;
 
                     return;
 
                  when 'i' =>
                     Storing (First_Stored) := 'i';
 
                     Ptr := Ptr + 1;
 
                     if Ptr > Max then
                        Last := 0;
                        return;
                     end if;
 
                     C := Switch_Chars (Ptr);
 
                     if C in '1' .. '5'
                       or else C = '8'
                       or else C = 'p'
                       or else C = 'f'
                       or else C = 'n'
                       or else C = 'w'
                     then
                        Storing (First_Stored + 1) := C;
                        Add_Switch_Component
                          (Storing (Storing'First .. First_Stored + 1));
                        Ptr := Ptr + 1;
 
                     else
                        Last := 0;
                        return;
                     end if;
 
                  --  -gnatR may be followed by '0', '1', '2' or '3',
                  --  then by 's'
 
                  when 'R' =>
                     Last_Stored := First_Stored;
                     Storing (Last_Stored) := 'R';
                     Ptr := Ptr + 1;
 
                     if Ptr <= Max
                       and then Switch_Chars (Ptr) in '0' .. '9'
                     then
                        C := Switch_Chars (Ptr);
 
                        if C in '4' .. '9' then
                           Last := 0;
                           return;
 
                        else
                           Last_Stored := Last_Stored + 1;
                           Storing (Last_Stored) := C;
                           Ptr := Ptr + 1;
 
                           if Ptr <= Max
                             and then Switch_Chars (Ptr) = 's'
                           then
                              Last_Stored := Last_Stored + 1;
                              Storing (Last_Stored) := 's';
                              Ptr := Ptr + 1;
                           end if;
                        end if;
                     end if;
 
                     Add_Switch_Component
                       (Storing (Storing'First .. Last_Stored));
 
                  --  Multiple switches
 
                  when 'V' | 'w' | 'y' =>
                     Storing (First_Stored) := C;
                     Ptr := Ptr + 1;
 
                     if Ptr > Max then
                        if C = 'y' then
                           Add_Switch_Component
                             (Storing (Storing'First .. First_Stored));
 
                        else
                           Last := 0;
                           return;
                        end if;
                     end if;
 
                     --  Loop through remaining switch characters in string
 
                     while Ptr <= Max loop
                        C := Switch_Chars (Ptr);
                        Ptr := Ptr + 1;
 
                        --  -gnatyMxxx
 
                        if C = 'M' and then Storing (First_Stored) = 'y' then
                           Last_Stored := First_Stored + 1;
                           Storing (Last_Stored) := 'M';
                           while Ptr <= Max loop
                              C := Switch_Chars (Ptr);
                              exit when C not in '0' .. '9';
                              Last_Stored := Last_Stored + 1;
                              Storing (Last_Stored) := C;
                              Ptr := Ptr + 1;
                           end loop;
 
                           --  If there is no digit after -gnatyM,
                           --  the switch is invalid.
 
                           if Last_Stored = First_Stored + 1 then
                              Last := 0;
                              return;
 
                           else
                              Add_Switch_Component
                                (Storing (Storing'First .. Last_Stored));
                           end if;
 
                        --  --gnatx.x
 
                        elsif C = '.' and then Ptr <= Max then
                           Storing (First_Stored + 1) := '.';
                           Storing (First_Stored + 2) := Switch_Chars (Ptr);
                           Ptr := Ptr + 1;
                           Add_Switch_Component
                             (Storing (Storing'First .. First_Stored + 2));
 
                        --  All other switches are -gnatxx
 
                        else
                           Storing (First_Stored + 1) := C;
                           Add_Switch_Component
                             (Storing (Storing'First .. First_Stored + 1));
                        end if;
                     end loop;
 
                  --  -gnat95 -gnat05
 
                  when '0' | '9' =>
                     Last_Stored := First_Stored;
                     Storing (Last_Stored) := C;
                     Ptr := Ptr + 1;
 
                     if Ptr /= Max or else Switch_Chars (Ptr) /= '5' then
 
                        --  Invalid switch
 
                        Last := 0;
                        return;
 
                     else
                        Last_Stored := Last_Stored + 1;
                        Storing (Last_Stored) := '5';
                        Add_Switch_Component
                          (Storing (Storing'First .. Last_Stored));
                        Ptr := Ptr + 1;
                     end if;
 
                  --  -gnat83
 
                  when '8' =>
                     Last_Stored := First_Stored;
                     Storing (Last_Stored) := '8';
                     Ptr := Ptr + 1;
 
                     if Ptr /= Max or else Switch_Chars (Ptr) /= '3' then
 
                        --  Invalid switch
 
                        Last := 0;
                        return;
 
                     else
                        Last_Stored := Last_Stored + 1;
                        Storing (Last_Stored) := '3';
                        Add_Switch_Component
                          (Storing (Storing'First .. Last_Stored));
                        Ptr := Ptr + 1;
                     end if;
 
                  --  Not a valid switch
 
                  when others =>
                     Last := 0;
                     return;
 
               end case;
 
         end case;
      end loop;
   end Normalize_Compiler_Switches;
 
   function Normalize_Compiler_Switches
     (Switch_Chars : String) return Argument_List
   is
      Last : Natural;
 
   begin
      Normalize_Compiler_Switches (Switch_Chars, Global_Switches, Last);
 
      if Last = 0 then
         return (1 .. 0 => null);
      else
         return Global_Switches (Global_Switches'First .. Last);
      end if;
   end Normalize_Compiler_Switches;
 
   ------------------------
   -- Scan_Make_Switches --
   ------------------------
 
   procedure Scan_Make_Switches
     (Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
      Switch_Chars      : String;
      Success           : out Boolean)
   is
      Ptr : Integer          := Switch_Chars'First;
      Max : constant Integer := Switch_Chars'Last;
      C   : Character        := ' ';
 
   begin
      --  Assume a good switch
 
      Success := True;
 
      --  Skip past the initial character (must be the switch character)
 
      if Ptr = Max then
         Bad_Switch (Switch_Chars);
 
      else
         Ptr := Ptr + 1;
      end if;
 
      --  A little check, "gnat" at the start of a switch is for the compiler
 
      if Switch_Chars'Length >= Ptr + 3
        and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"
      then
         Success := False;
         return;
      end if;
 
      C := Switch_Chars (Ptr);
 
      --  Multiple character switches
 
      if Switch_Chars'Length > 2 then
         if Switch_Chars = "--create-missing-dirs" then
            Setup_Projects := True;
 
         elsif Switch_Chars'Length > Subdirs_Option'Length
           and then
             Switch_Chars
               (Switch_Chars'First ..
                Switch_Chars'First + Subdirs_Option'Length - 1) =
                                                            Subdirs_Option
         then
            Subdirs :=
              new String'
                (Switch_Chars
                  (Switch_Chars'First + Subdirs_Option'Length ..
                   Switch_Chars'Last));
 
         elsif Switch_Chars (Ptr) = '-' then
            Bad_Switch (Switch_Chars);
 
         elsif Switch_Chars'Length > 3
           and then Switch_Chars (Ptr .. Ptr + 1) = "aP"
         then
            Add_Search_Project_Directory
              (Project_Node_Tree,
               Switch_Chars (Ptr + 2 .. Switch_Chars'Last));
 
         elsif C = 'v' and then Switch_Chars'Length = 3 then
            Ptr := Ptr + 1;
            Verbose_Mode := True;
 
            case Switch_Chars (Ptr) is
               when 'l' =>
                  Verbosity_Level := Opt.Low;
 
               when 'm' =>
                  Verbosity_Level := Opt.Medium;
 
               when 'h' =>
                  Verbosity_Level := Opt.High;
 
               when others =>
                  Success := False;
            end case;
 
         elsif C = 'd' then
 
            --  Note: for the debug switch, the remaining characters in this
            --  switch field must all be debug flags, since all valid switch
            --  characters are also valid debug characters. This switch is not
            --  documented on purpose because it is only used by the
            --  implementors.
 
            --  Loop to scan out debug flags
 
            while Ptr < Max loop
               Ptr := Ptr + 1;
               C := Switch_Chars (Ptr);
 
               if C in 'a' .. 'z' or else C in 'A' .. 'Z' then
                  Set_Debug_Flag (C);
               else
                  Bad_Switch (Switch_Chars);
               end if;
            end loop;
 
         elsif C = 'e' then
            Ptr := Ptr + 1;
 
            case Switch_Chars (Ptr) is
 
               --  Processing for eI switch
 
               when 'I' =>
                  Ptr := Ptr + 1;
                  Scan_Pos (Switch_Chars, Max, Ptr, Main_Index, C);
 
                  if Ptr <= Max then
                     Bad_Switch (Switch_Chars);
                  end if;
 
               --  Processing for eL switch
 
               when 'L' =>
                  if Ptr /= Max then
                     Bad_Switch (Switch_Chars);
 
                  else
                     Follow_Links_For_Files := True;
                     Follow_Links_For_Dirs  := True;
                  end if;
 
               --  Processing for eS switch
 
               when 'S' =>
                  if Ptr /= Max then
                     Bad_Switch (Switch_Chars);
 
                  else
                     Commands_To_Stdout := True;
                  end if;
 
               when others =>
                  Bad_Switch (Switch_Chars);
            end case;
 
         elsif C = 'j' then
            Ptr := Ptr + 1;
 
            declare
               Max_Proc : Pos;
            begin
               Scan_Pos (Switch_Chars, Max, Ptr, Max_Proc, C);
 
               if Ptr <= Max then
                  Bad_Switch (Switch_Chars);
 
               else
                  Maximum_Processes := Positive (Max_Proc);
               end if;
            end;
 
         elsif C = 'w' and then Switch_Chars'Length = 3 then
            Ptr := Ptr + 1;
 
            if Switch_Chars = "-we" then
               Warning_Mode := Treat_As_Error;
 
            elsif Switch_Chars = "-wn" then
               Warning_Mode := Normal;
 
            elsif Switch_Chars = "-ws" then
               Warning_Mode  := Suppress;
 
            else
               Success := False;
            end if;
 
         else
            Success := False;
         end if;
 
      --  Single-character switches
 
      else
         Check_Switch : begin
 
            case C is
 
               when 'a' =>
                  Check_Readonly_Files := True;
 
               --  Processing for b switch
 
               when 'b' =>
                  Bind_Only  := True;
                  Make_Steps := True;
 
               --  Processing for B switch
 
               when 'B' =>
                  Build_Bind_And_Link_Full_Project := True;
 
               --  Processing for c switch
 
               when 'c' =>
                  Compile_Only := True;
                  Make_Steps   := True;
 
               --  Processing for C switch
 
               when 'C' =>
                  Create_Mapping_File := True;
 
               --  Processing for D switch
 
               when 'D' =>
                  if Object_Directory_Present then
                     Osint.Fail ("duplicate -D switch");
 
                  else
                     Object_Directory_Present := True;
                  end if;
 
               --  Processing for f switch
 
               when 'f' =>
                  Force_Compilations := True;
 
               --  Processing for F switch
 
               when 'F' =>
                  Full_Path_Name_For_Brief_Errors := True;
 
               --  Processing for h switch
 
               when 'h' =>
                  Usage_Requested := True;
 
               --  Processing for i switch
 
               when 'i' =>
                  In_Place_Mode := True;
 
               --  Processing for j switch
 
               when 'j' =>
                  --  -j not followed by a number is an error
 
                  Bad_Switch (Switch_Chars);
 
               --  Processing for k switch
 
               when 'k' =>
                  Keep_Going := True;
 
               --  Processing for l switch
 
               when 'l' =>
                  Link_Only  := True;
                  Make_Steps := True;
 
               --  Processing for M switch
 
               when 'M' =>
                  List_Dependencies := True;
 
               --  Processing for n switch
 
               when 'n' =>
                  Do_Not_Execute := True;
 
               --  Processing for o switch
 
               when 'o' =>
                  if Output_File_Name_Present then
                     Osint.Fail ("duplicate -o switch");
                  else
                     Output_File_Name_Present := True;
                  end if;
 
               --  Processing for p switch
 
               when 'p' =>
                  Setup_Projects := True;
 
               --  Processing for q switch
 
               when 'q' =>
                  Quiet_Output := True;
 
               --  Processing for R switch
 
               when 'R' =>
                  Run_Path_Option := False;
 
               --  Processing for s switch
 
               when 's' =>
                  Ptr := Ptr + 1;
                  Check_Switches := True;
 
               --  Processing for v switch
 
               when 'v' =>
                  Verbose_Mode := True;
                  Verbosity_Level := Opt.High;
 
                  --  Processing for x switch
 
               when 'x' =>
                  External_Unit_Compilation_Allowed := True;
 
                  --  Processing for z switch
 
               when 'z' =>
                  No_Main_Subprogram := True;
 
                  --  Any other small letter is an illegal switch
 
               when others =>
                  if C in 'a' .. 'z' then
                     Bad_Switch (Switch_Chars);
 
                  else
                     Success := False;
                  end if;
 
            end case;
         end Check_Switch;
      end if;
   end Scan_Make_Switches;
 
end Switch.M;

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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [switch-m.adb] - Blame information for rev 311

Line No.	Rev	Author	Line
1	281	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT COMPILER COMPONENTS --`
4			`-- --`
5			`-- S W I T C H - M --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 2001-2009, 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.Ext; use Prj.Ext;`
32			`with Table;`
33
34			`package body Switch.M is`
35
36			`package Normalized_Switches is new Table.Table`
37			`(Table_Component_Type => String_Access,`
38			`Table_Index_Type => Integer,`
39			`Table_Low_Bound => 1,`
40			`Table_Initial => 20,`
41			`Table_Increment => 100,`
42			`Table_Name => "Switch.M.Normalized_Switches");`
43			`-- This table is used to keep the normalized switches, so that they may be`
44			`-- reused for subsequent invocations of Normalize_Compiler_Switches with`
45			`-- similar switches.`
46
47			`Initial_Number_Of_Switches : constant := 10;`
48
49			`Global_Switches : Argument_List_Access := null;`
50			`-- Used by function Normalize_Compiler_Switches`
51
52			`---------------------------------`
53			`-- Normalize_Compiler_Switches --`
54			`---------------------------------`
55
56			`procedure Normalize_Compiler_Switches`
57			`(Switch_Chars : String;`
58			`Switches : in out Argument_List_Access;`
59			`Last : out Natural)`
60			`is`
61			`Switch_Starts_With_Gnat : Boolean;`
62
63			`Ptr : Integer := Switch_Chars'First;`
64			`Max : constant Integer := Switch_Chars'Last;`
65			`C : Character := ' ';`
66
67			`Storing : String := Switch_Chars;`
68			`First_Stored : Positive := Ptr + 1;`
69			`Last_Stored : Positive := First_Stored;`
70
71			`procedure Add_Switch_Component (S : String);`
72			`-- Add a new String_Access component in Switches. If a string equal`
73			`-- to S is already stored in the table Normalized_Switches, use it.`
74			`-- Other wise add a new component to the table.`
75
76			`--------------------------`
77			`-- Add_Switch_Component --`
78			`--------------------------`
79
80			`procedure Add_Switch_Component (S : String) is`
81			`begin`
82			`-- If Switches is null, allocate a new array`
83
84			`if Switches = null then`
85			`Switches := new Argument_List (1 .. Initial_Number_Of_Switches);`
86
87			`-- Otherwise, if Switches is full, extend it`
88
89			`elsif Last = Switches'Last then`
90			`declare`
91			`New_Switches : constant Argument_List_Access :=`
92			`new Argument_List`
93			`(1 .. Switches'Length + Switches'Length);`
94			`begin`
95			`New_Switches (1 .. Switches'Length) := Switches.all;`
96			`Last := Switches'Length;`
97			`Switches := New_Switches;`
98			`end;`
99			`end if;`
100
101			`-- If this is the first switch, Last designates the first component`
102
103			`if Last = 0 then`
104			`Last := Switches'First;`
105			`else`
106			`Last := Last + 1;`
107			`end if;`
108
109			`-- Look into the table Normalized_Switches for a similar string.`
110			`-- If one is found, put it at the added component, and return.`
111
112			`for Index in 1 .. Normalized_Switches.Last loop`
113			`if S = Normalized_Switches.Table (Index).all then`
114			`Switches (Last) := Normalized_Switches.Table (Index);`
115			`return;`
116			`end if;`
117			`end loop;`
118
119			`-- No string equal to S was found in the table Normalized_Switches.`
120			`-- Add a new component in the table.`
121
122			`Switches (Last) := new String'(S);`
123			`Normalized_Switches.Append (Switches (Last));`
124			`end Add_Switch_Component;`
125
126			`-- Start of processing for Normalize_Compiler_Switches`
127
128			`begin`
129			`Last := 0;`
130
131			`if Ptr = Max or else Switch_Chars (Ptr) /= '-' then`
132			`return;`
133			`end if;`
134
135			`Ptr := Ptr + 1;`
136
137			`Switch_Starts_With_Gnat :=`
138			`Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat";`
139
140			`if Switch_Starts_With_Gnat then`
141			`Ptr := Ptr + 4;`
142			`First_Stored := Ptr;`
143			`end if;`
144
145			`while Ptr <= Max loop`
146			`C := Switch_Chars (Ptr);`
147
148			`-- Processing for a switch`
149
150			`case Switch_Starts_With_Gnat is`
151
152			`when False =>`
153
154			`-- All switches that don't start with -gnat stay as is,`
155			`-- except -pg, -Wall, -k8, -w`
156
157			`if Switch_Chars = "-pg" or else Switch_Chars = "-p" then`
158
159			`-- The gcc driver converts -pg to -p, so that is what`
160			`-- is stored in the ALI file.`
161
162			`Add_Switch_Component ("-p");`
163
164			`elsif Switch_Chars = "-Wall" then`
165
166			`-- The gcc driver adds -gnatwa when -Wall is used`
167
168			`Add_Switch_Component ("-gnatwa");`
169			`Add_Switch_Component ("-Wall");`
170
171			`elsif Switch_Chars = "-k8" then`
172
173			`-- The gcc driver transforms -k8 into -gnatk8`
174
175			`Add_Switch_Component ("-gnatk8");`
176
177			`elsif Switch_Chars = "-w" then`
178
179			`-- The gcc driver adds -gnatws when -w is used`
180
181			`Add_Switch_Component ("-gnatws");`
182			`Add_Switch_Component ("-w");`
183
184			`elsif Switch_Chars'Length > 6`
185			`and then`
186			`Switch_Chars (Switch_Chars'First .. Switch_Chars'First + 5)`
187			`= "--RTS="`
188			`then`
189			`Add_Switch_Component (Switch_Chars);`
190
191			`-- When --RTS=mtp is used, the gcc driver adds -mrtp`
192
193			`if Switch_Chars = "--RTS=mtp" then`
194			`Add_Switch_Component ("-mrtp");`
195			`end if;`
196
197			`-- Take only into account switches that are transmitted to`
198			`-- gnat1 by the gcc driver and stored by gnat1 in the ALI file.`
199
200			`else`
201			`case C is`
202			`when 'O' \| 'W' \| 'w' \| 'f' \| 'd' \| 'g' \| 'm' =>`
203			`Add_Switch_Component (Switch_Chars);`
204
205			`when others =>`
206			`null;`
207			`end case;`
208			`end if;`
209
210			`return;`
211
212			`when True =>`
213
214			`case C is`
215
216			`-- One-letter switches`
217
218			`when 'a' \| 'A' \| 'b' \| 'c' \| 'D' \| 'E' \| 'f' \|`
219			`'F' \| 'g' \| 'h' \| 'H' \| 'k' \| 'l' \| 'L' \| 'n' \| 'N' \|`
220			`'o' \| 'O' \| 'p' \| 'P' \| 'q' \| 'Q' \| 'r' \| 's' \| 't' \|`
221			`'u' \| 'U' \| 'v' \| 'x' \| 'X' \| 'Z' =>`
222			`Storing (First_Stored) := C;`
223			`Add_Switch_Component`
224			`(Storing (Storing'First .. First_Stored));`
225			`Ptr := Ptr + 1;`
226
227			`-- One-letter switches followed by a positive number`
228
229			`when 'm' \| 'T' =>`
230			`Storing (First_Stored) := C;`
231			`Last_Stored := First_Stored;`
232
233			`loop`
234			`Ptr := Ptr + 1;`
235			`exit when Ptr > Max`
236			`or else Switch_Chars (Ptr) not in '0' .. '9';`
237			`Last_Stored := Last_Stored + 1;`
238			`Storing (Last_Stored) := Switch_Chars (Ptr);`
239			`end loop;`
240
241			`Add_Switch_Component`
242			`(Storing (Storing'First .. Last_Stored));`
243
244			`when 'd' =>`
245			`Storing (First_Stored) := 'd';`
246
247			`while Ptr < Max loop`
248			`Ptr := Ptr + 1;`
249			`C := Switch_Chars (Ptr);`
250			`exit when C = ASCII.NUL or else C = '/'`
251			`or else C = '-';`
252
253			`if C in '1' .. '9' or else`
254			`C in 'a' .. 'z' or else`
255			`C in 'A' .. 'Z'`
256			`then`
257			`Storing (First_Stored + 1) := C;`
258			`Add_Switch_Component`
259			`(Storing (Storing'First .. First_Stored + 1));`
260
261			`else`
262			`Last := 0;`
263			`return;`
264			`end if;`
265			`end loop;`
266
267			`return;`
268
269			`when 'e' =>`
270
271			`-- Store -gnateD, -gnatep= and -gnateG in the ALI file.`
272			`-- The other -gnate switches do not need to be stored.`
273
274			`Storing (First_Stored) := 'e';`
275			`Ptr := Ptr + 1;`
276
277			`if Ptr > Max`
278			`or else (Switch_Chars (Ptr) /= 'D'`
279			`and then Switch_Chars (Ptr) /= 'G'`
280			`and then Switch_Chars (Ptr) /= 'p')`
281			`then`
282			`Last := 0;`
283			`return;`
284			`end if;`
285
286			`-- Processing for -gnateD`
287
288			`if Switch_Chars (Ptr) = 'D' then`
289			`Storing (First_Stored + 1 ..`
290			`First_Stored + Max - Ptr + 1) :=`
291			`Switch_Chars (Ptr .. Max);`
292			`Add_Switch_Component`
293			`(Storing (Storing'First ..`
294			`First_Stored + Max - Ptr + 1));`
295
296			`-- Processing for -gnatep=`
297
298			`elsif Switch_Chars (Ptr) = 'p' then`
299			`Ptr := Ptr + 1;`
300
301			`if Ptr = Max then`
302			`Last := 0;`
303			`return;`
304			`end if;`
305
306			`if Switch_Chars (Ptr) = '=' then`
307			`Ptr := Ptr + 1;`
308			`end if;`
309
310			`-- To normalize, always put a '=' after -gnatep.`
311			`-- Because that could lengthen the switch string,`
312			`-- declare a local variable.`
313
314			`declare`
315			`To_Store : String (1 .. Max - Ptr + 9);`
316			`begin`
317			`To_Store (1 .. 8) := "-gnatep=";`
318			`To_Store (9 .. Max - Ptr + 9) :=`
319			`Switch_Chars (Ptr .. Max);`
320			`Add_Switch_Component (To_Store);`
321			`end;`
322
323			`elsif Switch_Chars (Ptr) = 'G' then`
324			`Add_Switch_Component ("-gnateG");`
325			`end if;`
326
327			`return;`
328
329			`when 'i' =>`
330			`Storing (First_Stored) := 'i';`
331
332			`Ptr := Ptr + 1;`
333
334			`if Ptr > Max then`
335			`Last := 0;`
336			`return;`
337			`end if;`
338
339			`C := Switch_Chars (Ptr);`
340
341			`if C in '1' .. '5'`
342			`or else C = '8'`
343			`or else C = 'p'`
344			`or else C = 'f'`
345			`or else C = 'n'`
346			`or else C = 'w'`
347			`then`
348			`Storing (First_Stored + 1) := C;`
349			`Add_Switch_Component`
350			`(Storing (Storing'First .. First_Stored + 1));`
351			`Ptr := Ptr + 1;`
352
353			`else`
354			`Last := 0;`
355			`return;`
356			`end if;`
357
358			`-- -gnatR may be followed by '0', '1', '2' or '3',`
359			`-- then by 's'`
360
361			`when 'R' =>`
362			`Last_Stored := First_Stored;`
363			`Storing (Last_Stored) := 'R';`
364			`Ptr := Ptr + 1;`
365
366			`if Ptr <= Max`
367			`and then Switch_Chars (Ptr) in '0' .. '9'`
368			`then`
369			`C := Switch_Chars (Ptr);`
370
371			`if C in '4' .. '9' then`
372			`Last := 0;`
373			`return;`
374
375			`else`
376			`Last_Stored := Last_Stored + 1;`
377			`Storing (Last_Stored) := C;`
378			`Ptr := Ptr + 1;`
379
380			`if Ptr <= Max`
381			`and then Switch_Chars (Ptr) = 's'`
382			`then`
383			`Last_Stored := Last_Stored + 1;`
384			`Storing (Last_Stored) := 's';`
385			`Ptr := Ptr + 1;`
386			`end if;`
387			`end if;`
388			`end if;`
389
390			`Add_Switch_Component`
391			`(Storing (Storing'First .. Last_Stored));`
392
393			`-- Multiple switches`
394
395			`when 'V' \| 'w' \| 'y' =>`
396			`Storing (First_Stored) := C;`
397			`Ptr := Ptr + 1;`
398
399			`if Ptr > Max then`
400			`if C = 'y' then`
401			`Add_Switch_Component`
402			`(Storing (Storing'First .. First_Stored));`
403
404			`else`
405			`Last := 0;`
406			`return;`
407			`end if;`
408			`end if;`
409
410			`-- Loop through remaining switch characters in string`
411
412			`while Ptr <= Max loop`
413			`C := Switch_Chars (Ptr);`
414			`Ptr := Ptr + 1;`
415
416			`-- -gnatyMxxx`
417
418			`if C = 'M' and then Storing (First_Stored) = 'y' then`
419			`Last_Stored := First_Stored + 1;`
420			`Storing (Last_Stored) := 'M';`
421			`while Ptr <= Max loop`
422			`C := Switch_Chars (Ptr);`
423			`exit when C not in '0' .. '9';`
424			`Last_Stored := Last_Stored + 1;`
425			`Storing (Last_Stored) := C;`
426			`Ptr := Ptr + 1;`
427			`end loop;`
428
429			`-- If there is no digit after -gnatyM,`
430			`-- the switch is invalid.`
431
432			`if Last_Stored = First_Stored + 1 then`
433			`Last := 0;`
434			`return;`
435
436			`else`
437			`Add_Switch_Component`
438			`(Storing (Storing'First .. Last_Stored));`
439			`end if;`
440
441			`-- --gnatx.x`
442
443			`elsif C = '.' and then Ptr <= Max then`
444			`Storing (First_Stored + 1) := '.';`
445			`Storing (First_Stored + 2) := Switch_Chars (Ptr);`
446			`Ptr := Ptr + 1;`
447			`Add_Switch_Component`
448			`(Storing (Storing'First .. First_Stored + 2));`
449
450			`-- All other switches are -gnatxx`
451
452			`else`
453			`Storing (First_Stored + 1) := C;`
454			`Add_Switch_Component`
455			`(Storing (Storing'First .. First_Stored + 1));`
456			`end if;`
457			`end loop;`
458
459			`-- -gnat95 -gnat05`
460
461			`when '0' \| '9' =>`
462			`Last_Stored := First_Stored;`
463			`Storing (Last_Stored) := C;`
464			`Ptr := Ptr + 1;`
465
466			`if Ptr /= Max or else Switch_Chars (Ptr) /= '5' then`
467
468			`-- Invalid switch`
469
470			`Last := 0;`
471			`return;`
472
473			`else`
474			`Last_Stored := Last_Stored + 1;`
475			`Storing (Last_Stored) := '5';`
476			`Add_Switch_Component`
477			`(Storing (Storing'First .. Last_Stored));`
478			`Ptr := Ptr + 1;`
479			`end if;`
480
481			`-- -gnat83`
482
483			`when '8' =>`
484			`Last_Stored := First_Stored;`
485			`Storing (Last_Stored) := '8';`
486			`Ptr := Ptr + 1;`
487
488			`if Ptr /= Max or else Switch_Chars (Ptr) /= '3' then`
489
490			`-- Invalid switch`
491
492			`Last := 0;`
493			`return;`
494
495			`else`
496			`Last_Stored := Last_Stored + 1;`
497			`Storing (Last_Stored) := '3';`
498			`Add_Switch_Component`
499			`(Storing (Storing'First .. Last_Stored));`
500			`Ptr := Ptr + 1;`
501			`end if;`
502
503			`-- Not a valid switch`
504
505			`when others =>`
506			`Last := 0;`
507			`return;`
508
509			`end case;`
510
511			`end case;`
512			`end loop;`
513			`end Normalize_Compiler_Switches;`
514
515			`function Normalize_Compiler_Switches`
516			`(Switch_Chars : String) return Argument_List`
517			`is`
518			`Last : Natural;`
519
520			`begin`
521			`Normalize_Compiler_Switches (Switch_Chars, Global_Switches, Last);`
522
523			`if Last = 0 then`
524			`return (1 .. 0 => null);`
525			`else`
526			`return Global_Switches (Global_Switches'First .. Last);`
527			`end if;`
528			`end Normalize_Compiler_Switches;`
529
530			`------------------------`
531			`-- Scan_Make_Switches --`
532			`------------------------`
533
534			`procedure Scan_Make_Switches`
535			`(Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;`
536			`Switch_Chars : String;`
537			`Success : out Boolean)`
538			`is`
539			`Ptr : Integer := Switch_Chars'First;`
540			`Max : constant Integer := Switch_Chars'Last;`
541			`C : Character := ' ';`
542
543			`begin`
544			`-- Assume a good switch`
545
546			`Success := True;`
547
548			`-- Skip past the initial character (must be the switch character)`
549
550			`if Ptr = Max then`
551			`Bad_Switch (Switch_Chars);`
552
553			`else`
554			`Ptr := Ptr + 1;`
555			`end if;`
556
557			`-- A little check, "gnat" at the start of a switch is for the compiler`
558
559			`if Switch_Chars'Length >= Ptr + 3`
560			`and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"`
561			`then`
562			`Success := False;`
563			`return;`
564			`end if;`
565
566			`C := Switch_Chars (Ptr);`
567
568			`-- Multiple character switches`
569
570			`if Switch_Chars'Length > 2 then`
571			`if Switch_Chars = "--create-missing-dirs" then`
572			`Setup_Projects := True;`
573
574			`elsif Switch_Chars'Length > Subdirs_Option'Length`
575			`and then`
576			`Switch_Chars`
577			`(Switch_Chars'First ..`
578			`Switch_Chars'First + Subdirs_Option'Length - 1) =`
579			`Subdirs_Option`
580			`then`
581			`Subdirs :=`
582			`new String'`
583			`(Switch_Chars`
584			`(Switch_Chars'First + Subdirs_Option'Length ..`
585			`Switch_Chars'Last));`
586
587			`elsif Switch_Chars (Ptr) = '-' then`
588			`Bad_Switch (Switch_Chars);`
589
590			`elsif Switch_Chars'Length > 3`
591			`and then Switch_Chars (Ptr .. Ptr + 1) = "aP"`
592			`then`
593			`Add_Search_Project_Directory`
594			`(Project_Node_Tree,`
595			`Switch_Chars (Ptr + 2 .. Switch_Chars'Last));`
596
597			`elsif C = 'v' and then Switch_Chars'Length = 3 then`
598			`Ptr := Ptr + 1;`
599			`Verbose_Mode := True;`
600
601			`case Switch_Chars (Ptr) is`
602			`when 'l' =>`
603			`Verbosity_Level := Opt.Low;`
604
605			`when 'm' =>`
606			`Verbosity_Level := Opt.Medium;`
607
608			`when 'h' =>`
609			`Verbosity_Level := Opt.High;`
610
611			`when others =>`
612			`Success := False;`
613			`end case;`
614
615			`elsif C = 'd' then`
616
617			`-- Note: for the debug switch, the remaining characters in this`
618			`-- switch field must all be debug flags, since all valid switch`
619			`-- characters are also valid debug characters. This switch is not`
620			`-- documented on purpose because it is only used by the`
621			`-- implementors.`
622
623			`-- Loop to scan out debug flags`
624
625			`while Ptr < Max loop`
626			`Ptr := Ptr + 1;`
627			`C := Switch_Chars (Ptr);`
628
629			`if C in 'a' .. 'z' or else C in 'A' .. 'Z' then`
630			`Set_Debug_Flag (C);`
631			`else`
632			`Bad_Switch (Switch_Chars);`
633			`end if;`
634			`end loop;`
635
636			`elsif C = 'e' then`
637			`Ptr := Ptr + 1;`
638
639			`case Switch_Chars (Ptr) is`
640
641			`-- Processing for eI switch`
642
643			`when 'I' =>`
644			`Ptr := Ptr + 1;`
645			`Scan_Pos (Switch_Chars, Max, Ptr, Main_Index, C);`
646
647			`if Ptr <= Max then`
648			`Bad_Switch (Switch_Chars);`
649			`end if;`
650
651			`-- Processing for eL switch`
652
653			`when 'L' =>`
654			`if Ptr /= Max then`
655			`Bad_Switch (Switch_Chars);`
656
657			`else`
658			`Follow_Links_For_Files := True;`
659			`Follow_Links_For_Dirs := True;`
660			`end if;`
661
662			`-- Processing for eS switch`
663
664			`when 'S' =>`
665			`if Ptr /= Max then`
666			`Bad_Switch (Switch_Chars);`
667
668			`else`
669			`Commands_To_Stdout := True;`
670			`end if;`
671
672			`when others =>`
673			`Bad_Switch (Switch_Chars);`
674			`end case;`
675
676			`elsif C = 'j' then`
677			`Ptr := Ptr + 1;`
678
679			`declare`
680			`Max_Proc : Pos;`
681			`begin`
682			`Scan_Pos (Switch_Chars, Max, Ptr, Max_Proc, C);`
683
684			`if Ptr <= Max then`
685			`Bad_Switch (Switch_Chars);`
686
687			`else`
688			`Maximum_Processes := Positive (Max_Proc);`
689			`end if;`
690			`end;`
691
692			`elsif C = 'w' and then Switch_Chars'Length = 3 then`
693			`Ptr := Ptr + 1;`
694
695			`if Switch_Chars = "-we" then`
696			`Warning_Mode := Treat_As_Error;`
697
698			`elsif Switch_Chars = "-wn" then`
699			`Warning_Mode := Normal;`
700
701			`elsif Switch_Chars = "-ws" then`
702			`Warning_Mode := Suppress;`
703
704			`else`
705			`Success := False;`
706			`end if;`
707
708			`else`
709			`Success := False;`
710			`end if;`
711
712			`-- Single-character switches`
713
714			`else`
715			`Check_Switch : begin`
716
717			`case C is`
718
719			`when 'a' =>`
720			`Check_Readonly_Files := True;`
721
722			`-- Processing for b switch`
723
724			`when 'b' =>`
725			`Bind_Only := True;`
726			`Make_Steps := True;`
727
728			`-- Processing for B switch`
729
730			`when 'B' =>`
731			`Build_Bind_And_Link_Full_Project := True;`
732
733			`-- Processing for c switch`
734
735			`when 'c' =>`
736			`Compile_Only := True;`
737			`Make_Steps := True;`
738
739			`-- Processing for C switch`
740
741			`when 'C' =>`
742			`Create_Mapping_File := True;`
743
744			`-- Processing for D switch`
745
746			`when 'D' =>`
747			`if Object_Directory_Present then`
748			`Osint.Fail ("duplicate -D switch");`
749
750			`else`
751			`Object_Directory_Present := True;`
752			`end if;`
753
754			`-- Processing for f switch`
755
756			`when 'f' =>`
757			`Force_Compilations := True;`
758
759			`-- Processing for F switch`
760
761			`when 'F' =>`
762			`Full_Path_Name_For_Brief_Errors := True;`
763
764			`-- Processing for h switch`
765
766			`when 'h' =>`
767			`Usage_Requested := True;`
768
769			`-- Processing for i switch`
770
771			`when 'i' =>`
772			`In_Place_Mode := True;`
773
774			`-- Processing for j switch`
775
776			`when 'j' =>`
777			`-- -j not followed by a number is an error`
778
779			`Bad_Switch (Switch_Chars);`
780
781			`-- Processing for k switch`
782
783			`when 'k' =>`
784			`Keep_Going := True;`
785
786			`-- Processing for l switch`
787
788			`when 'l' =>`
789			`Link_Only := True;`
790			`Make_Steps := True;`
791
792			`-- Processing for M switch`
793
794			`when 'M' =>`
795			`List_Dependencies := True;`
796
797			`-- Processing for n switch`
798
799			`when 'n' =>`
800			`Do_Not_Execute := True;`
801
802			`-- Processing for o switch`
803
804			`when 'o' =>`
805			`if Output_File_Name_Present then`
806			`Osint.Fail ("duplicate -o switch");`
807			`else`
808			`Output_File_Name_Present := True;`
809			`end if;`
810
811			`-- Processing for p switch`
812
813			`when 'p' =>`
814			`Setup_Projects := True;`
815
816			`-- Processing for q switch`
817
818			`when 'q' =>`
819			`Quiet_Output := True;`
820
821			`-- Processing for R switch`
822
823			`when 'R' =>`
824			`Run_Path_Option := False;`
825
826			`-- Processing for s switch`
827
828			`when 's' =>`
829			`Ptr := Ptr + 1;`
830			`Check_Switches := True;`
831
832			`-- Processing for v switch`
833
834			`when 'v' =>`
835			`Verbose_Mode := True;`
836			`Verbosity_Level := Opt.High;`
837
838			`-- Processing for x switch`
839
840			`when 'x' =>`
841			`External_Unit_Compilation_Allowed := True;`
842
843			`-- Processing for z switch`
844
845			`when 'z' =>`
846			`No_Main_Subprogram := True;`
847
848			`-- Any other small letter is an illegal switch`
849
850			`when others =>`
851			`if C in 'a' .. 'z' then`
852			`Bad_Switch (Switch_Chars);`
853
854			`else`
855			`Success := False;`
856			`end if;`
857
858			`end case;`
859			`end Check_Switch;`
860			`end if;`
861			`end Scan_Make_Switches;`
862
863			`end Switch.M;`