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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              G N A T C M D                               --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1996-2012, 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 GNAT.Directory_Operations; use GNAT.Directory_Operations;
 
with Csets;
with Hostparm; use Hostparm;
with Makeutl;  use Makeutl;
with MLib.Tgt; use MLib.Tgt;
with MLib.Utl;
with MLib.Fil;
with Namet;    use Namet;
with Opt;      use Opt;
with Osint;    use Osint;
with Output;   use Output;
with Prj;      use Prj;
with Prj.Env;
with Prj.Ext;  use Prj.Ext;
with Prj.Pars;
with Prj.Tree; use Prj.Tree;
with Prj.Util; use Prj.Util;
with Sdefault;
with Sinput.P;
with Snames;   use Snames;
with Table;
with Targparm;
with Tempdir;
with Types;    use Types;
with VMS_Conv; use VMS_Conv;
with VMS_Cmds; use VMS_Cmds;
 
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Command_Line;        use Ada.Command_Line;
with Ada.Text_IO;             use Ada.Text_IO;
 
with GNAT.OS_Lib; use GNAT.OS_Lib;
 
procedure GNATCmd is
   Project_Node_Tree : Project_Node_Tree_Ref;
   Root_Environment  : Prj.Tree.Environment;
   Project_File      : String_Access;
   Project           : Prj.Project_Id;
   Current_Verbosity : Prj.Verbosity := Prj.Default;
   Tool_Package_Name : Name_Id       := No_Name;
 
   B_Start : String_Ptr    := new String'("b~");
   --  Prefix of binder generated file, changed to b__ for VMS
 
   Project_Tree : constant Project_Tree_Ref :=
                    new Project_Tree_Data (Is_Root_Tree => True);
   --  The project tree
 
   Old_Project_File_Used : Boolean := False;
   --  This flag indicates a switch -p (for gnatxref and gnatfind) for
   --  an old fashioned project file. -p cannot be used in conjunction
   --  with -P.
 
   Temp_File_Name : Path_Name_Type := No_Path;
   --  The name of the temporary text file to put a list of source/object
   --  files to pass to a tool.
 
   ASIS_Main : String_Access := null;
   --  Main for commands Check, Metric and Pretty, when -U is used
 
   package First_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           => "Gnatcmd.First_Switches");
   --  A table to keep the switches from the project file
 
   package Carg_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           => "Gnatcmd.Carg_Switches");
   --  A table to keep the switches following -cargs for ASIS tools
 
   package Rules_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           => "Gnatcmd.Rules_Switches");
   --  A table to keep the switches following -rules for gnatcheck
 
   package Library_Paths 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           => "Make.Library_Path");
 
   --  Packages of project files to pass to Prj.Pars.Parse, depending on the
   --  tool. We allocate objects because we cannot declare aliased objects
   --  as we are in a procedure, not a library level package.
 
   subtype SA is String_Access;
 
   Naming_String      : constant SA := new String'("naming");
   Binder_String      : constant SA := new String'("binder");
   Builder_String     : constant SA := new String'("builder");
   Compiler_String    : constant SA := new String'("compiler");
   Check_String       : constant SA := new String'("check");
   Synchronize_String : constant SA := new String'("synchronize");
   Eliminate_String   : constant SA := new String'("eliminate");
   Finder_String      : constant SA := new String'("finder");
   Linker_String      : constant SA := new String'("linker");
   Gnatls_String      : constant SA := new String'("gnatls");
   Pretty_String      : constant SA := new String'("pretty_printer");
   Stack_String       : constant SA := new String'("stack");
   Gnatstub_String    : constant SA := new String'("gnatstub");
   Metric_String      : constant SA := new String'("metrics");
   Xref_String        : constant SA := new String'("cross_reference");
 
   Packages_To_Check_By_Binder   : constant String_List_Access :=
     new String_List'((Naming_String, Binder_String));
 
   Packages_To_Check_By_Check : constant String_List_Access :=
     new String_List'
          ((Naming_String, Builder_String, Check_String, Compiler_String));
 
   Packages_To_Check_By_Sync : constant String_List_Access :=
     new String_List'((Naming_String, Synchronize_String, Compiler_String));
 
   Packages_To_Check_By_Eliminate : constant String_List_Access :=
     new String_List'((Naming_String, Eliminate_String, Compiler_String));
 
   Packages_To_Check_By_Finder    : constant String_List_Access :=
     new String_List'((Naming_String, Finder_String));
 
   Packages_To_Check_By_Linker    : constant String_List_Access :=
     new String_List'((Naming_String, Linker_String));
 
   Packages_To_Check_By_Gnatls    : constant String_List_Access :=
     new String_List'((Naming_String, Gnatls_String));
 
   Packages_To_Check_By_Pretty    : constant String_List_Access :=
     new String_List'((Naming_String, Pretty_String, Compiler_String));
 
   Packages_To_Check_By_Stack     : constant String_List_Access :=
     new String_List'((Naming_String, Stack_String));
 
   Packages_To_Check_By_Gnatstub  : constant String_List_Access :=
     new String_List'((Naming_String, Gnatstub_String, Compiler_String));
 
   Packages_To_Check_By_Metric  : constant String_List_Access :=
     new String_List'((Naming_String, Metric_String, Compiler_String));
 
   Packages_To_Check_By_Xref      : constant String_List_Access :=
     new String_List'((Naming_String, Xref_String));
 
   Packages_To_Check : String_List_Access := Prj.All_Packages;
 
   ----------------------------------
   -- Declarations for GNATCMD use --
   ----------------------------------
 
   The_Command : Command_Type;
   --  The command specified in the invocation of the GNAT driver
 
   Command_Arg : Positive := 1;
   --  The index of the command in the arguments of the GNAT driver
 
   My_Exit_Status : Exit_Status := Success;
   --  The exit status of the spawned tool. Used to set the correct VMS
   --  exit status.
 
   Current_Work_Dir : constant String := Get_Current_Dir;
   --  The path of the working directory
 
   All_Projects : Boolean := False;
   --  Flag used for GNAT CHECK, GNAT PRETTY, GNAT METRIC, and GNAT STACK to
   --  indicate that the underlying tool (gnatcheck, gnatpp or gnatmetric)
   --  should be invoked for all sources of all projects.
 
   Max_OpenVMS_Logical_Length : constant Integer := 255;
   --  The maximum length of OpenVMS logicals
 
   -----------------------
   -- Local Subprograms --
   -----------------------
 
   procedure Add_To_Carg_Switches (Switch : String_Access);
   --  Add a switch to the Carg_Switches table. If it is the first one, put the
   --  switch "-cargs" at the beginning of the table.
 
   procedure Add_To_Rules_Switches (Switch : String_Access);
   --  Add a switch to the Rules_Switches table. If it is the first one, put
   --  the switch "-crules" at the beginning of the table.
 
   procedure Check_Files;
   --  For GNAT LIST, GNAT PRETTY, GNAT METRIC, and GNAT STACK, check if a
   --  project file is specified, without any file arguments and without a
   --  switch -files=. If it is the case, invoke the GNAT tool with the proper
   --  list of files, derived from the sources of the project.
 
   function Check_Project
     (Project      : Project_Id;
      Root_Project : Project_Id) return Boolean;
   --  Returns True if Project = Root_Project or if we want to consider all
   --  sources of all projects. For GNAT METRIC, also returns True if Project
   --  is extended by Root_Project.
 
   procedure Check_Relative_Executable (Name : in out String_Access);
   --  Check if an executable is specified as a relative path. If it is, and
   --  the path contains directory information, fail. Otherwise, prepend the
   --  exec directory. This procedure is only used for GNAT LINK when a project
   --  file is specified.
 
   function Configuration_Pragmas_File return Path_Name_Type;
   --  Return an argument, if there is a configuration pragmas file to be
   --  specified for Project, otherwise return No_Name. Used for gnatstub (GNAT
   --  STUB), gnatpp (GNAT PRETTY), gnatelim (GNAT ELIM), and gnatmetric (GNAT
   --  METRIC).
 
   function Mapping_File return Path_Name_Type;
   --  Create and return the path name of a mapping file. Used for gnatstub
   --  (GNAT STUB), gnatpp (GNAT PRETTY), gnatelim (GNAT ELIM), and gnatmetric
   --  (GNAT METRIC).
 
   procedure Delete_Temp_Config_Files;
   --  Delete all temporary config files. The caller is responsible for
   --  ensuring that Keep_Temporary_Files is False.
 
   procedure Get_Closure;
   --  Get the sources in the closure of the ASIS_Main and add them to the
   --  list of arguments.
 
   procedure Non_VMS_Usage;
   --  Display usage for platforms other than VMS
 
   procedure Process_Link;
   --  Process GNAT LINK, when there is a project file specified
 
   procedure Set_Library_For
     (Project           : Project_Id;
      Tree              : Project_Tree_Ref;
      Libraries_Present : in out Boolean);
   --  If Project is a library project, add the correct -L and -l switches to
   --  the linker invocation.
 
   procedure Set_Libraries is
      new For_Every_Project_Imported (Boolean, Set_Library_For);
   --  Add the -L and -l switches to the linker for all of the library
   --  projects.
 
   procedure Test_If_Relative_Path
     (Switch : in out String_Access;
      Parent : String);
   --  Test if Switch is a relative search path switch. If it is and it
   --  includes directory information, prepend the path with Parent. This
   --  subprogram is only called when using project files.
 
   --------------------------
   -- Add_To_Carg_Switches --
   --------------------------
 
   procedure Add_To_Carg_Switches (Switch : String_Access) is
   begin
      --  If the Carg_Switches table is empty, put "-cargs" at the beginning
 
      if Carg_Switches.Last = 0 then
         Carg_Switches.Increment_Last;
         Carg_Switches.Table (Carg_Switches.Last) := new String'("-cargs");
      end if;
 
      Carg_Switches.Increment_Last;
      Carg_Switches.Table (Carg_Switches.Last) := Switch;
   end Add_To_Carg_Switches;
 
   ---------------------------
   -- Add_To_Rules_Switches --
   ---------------------------
 
   procedure Add_To_Rules_Switches (Switch : String_Access) is
   begin
      --  If the Rules_Switches table is empty, put "-rules" at the beginning
 
      if Rules_Switches.Last = 0 then
         Rules_Switches.Increment_Last;
         Rules_Switches.Table (Rules_Switches.Last) := new String'("-rules");
      end if;
 
      Rules_Switches.Increment_Last;
      Rules_Switches.Table (Rules_Switches.Last) := Switch;
   end Add_To_Rules_Switches;
 
   -----------------
   -- Check_Files --
   -----------------
 
   procedure Check_Files is
      Add_Sources : Boolean := True;
      Unit        : Prj.Unit_Index;
      Subunit     : Boolean := False;
      FD          : File_Descriptor := Invalid_FD;
      Status      : Integer;
      Success     : Boolean;
 
      procedure Add_To_Response_File
        (File_Name  : String;
         Check_File : Boolean := True);
      --  Include the file name passed as parameter in the response file for
      --  the tool being called. If the response file can not be written then
      --  the file name is passed in the parameter list of the tool. If the
      --  Check_File parameter is True then the procedure verifies the
      --  existence of the file before adding it to the response file.
 
      --------------------------
      -- Add_To_Response_File --
      --------------------------
 
      procedure Add_To_Response_File
        (File_Name  : String;
         Check_File : Boolean := True)
      is
      begin
         Name_Len := 0;
 
         Add_Str_To_Name_Buffer (File_Name);
 
         if not Check_File or else
           Is_Regular_File (Name_Buffer (1 .. Name_Len))
         then
            if FD /= Invalid_FD then
               Name_Len := Name_Len + 1;
               Name_Buffer (Name_Len) := ASCII.LF;
 
               Status := Write (FD, Name_Buffer (1)'Address, Name_Len);
 
               if Status /= Name_Len then
                  Osint.Fail ("disk full");
               end if;
            else
               Last_Switches.Increment_Last;
               Last_Switches.Table (Last_Switches.Last) :=
                 new String'(File_Name);
            end if;
         end if;
      end Add_To_Response_File;
 
   --  Start of processing for Check_Files
 
   begin
      --  Check if there is at least one argument that is not a switch or if
      --  there is a -files= switch.
 
      for Index in 1 .. Last_Switches.Last loop
         if Last_Switches.Table (Index).all'Length > 7
           and then Last_Switches.Table (Index) (1 .. 7) = "-files="
         then
            Add_Sources := False;
            exit;
 
         elsif Last_Switches.Table (Index) (1) /= '-' then
            if Index = 1
              or else
                (The_Command = Check
                   and then Last_Switches.Table (Index - 1).all /= "-o")
              or else
                (The_Command = Pretty
                   and then Last_Switches.Table (Index - 1).all /= "-o"
                   and then Last_Switches.Table (Index - 1).all /= "-of")
              or else
                (The_Command = Metric
                   and then
                     Last_Switches.Table (Index - 1).all /= "-o"  and then
                     Last_Switches.Table (Index - 1).all /= "-og" and then
                     Last_Switches.Table (Index - 1).all /= "-ox" and then
                     Last_Switches.Table (Index - 1).all /= "-d")
              or else
                (The_Command /= Check  and then
                 The_Command /= Pretty and then
                 The_Command /= Metric)
            then
               Add_Sources := False;
               exit;
            end if;
         end if;
      end loop;
 
      --  If all arguments are switches and there is no switch -files=, add
      --  the path names of all the sources of the main project.
 
      if Add_Sources then
 
         --  For gnatcheck, gnatpp, and gnatmetric, create a temporary file
         --  and put the list of sources in it. For gnatstack create a
         --  temporary file with the list of .ci files.
 
         if The_Command = Check  or else
            The_Command = Pretty or else
            The_Command = Metric or else
            The_Command = Stack
         then
            Tempdir.Create_Temp_File (FD, Temp_File_Name);
            Last_Switches.Increment_Last;
            Last_Switches.Table (Last_Switches.Last) :=
              new String'("-files=" & Get_Name_String (Temp_File_Name));
         end if;
 
         declare
            Proj : Project_List;
 
         begin
            --  Gnatstack needs to add the .ci file for the binder generated
            --  files corresponding to all of the library projects and main
            --  units belonging to the application.
 
            if The_Command = Stack then
               Proj := Project_Tree.Projects;
               while Proj /= null loop
                  if Check_Project (Proj.Project, Project) then
                     declare
                        Main : String_List_Id;
 
                     begin
                        --  Include binder generated files for main programs
 
                        Main := Proj.Project.Mains;
                        while Main /= Nil_String loop
                           Add_To_Response_File
                             (Get_Name_String
                                (Proj.Project.Object_Directory.Name) &
                              B_Start.all                            &
                              MLib.Fil.Ext_To
                                (Get_Name_String
                                   (Project_Tree.Shared.String_Elements.Table
                                      (Main).Value),
                                 "ci"));
 
                           --  When looking for the .ci file for a binder
                           --  generated file, look for both b~xxx and b__xxx
                           --  as gprbuild always uses b__ as the prefix of
                           --  such files.
 
                           if not Is_Regular_File (Name_Buffer (1 .. Name_Len))
                             and then B_Start.all /= "b__"
                           then
                              Add_To_Response_File
                                (Get_Name_String
                                   (Proj.Project.Object_Directory.Name) &
                                 "b__"                                  &
                                 MLib.Fil.Ext_To
                                   (Get_Name_String
                                      (Project_Tree.Shared
                                       .String_Elements.Table (Main).Value),
                                    "ci"));
                           end if;
 
                           Main := Project_Tree.Shared.String_Elements.Table
                                     (Main).Next;
                        end loop;
 
                        if Proj.Project.Library then
 
                           --  Include the .ci file for the binder generated
                           --  files that contains the initialization and
                           --  finalization of the library.
 
                           Add_To_Response_File
                             (Get_Name_String
                                (Proj.Project.Object_Directory.Name)      &
                              B_Start.all                                 &
                              Get_Name_String (Proj.Project.Library_Name) &
                              ".ci");
 
                           --  When looking for the .ci file for a binder
                           --  generated file, look for both b~xxx and b__xxx
                           --  as gprbuild always uses b__ as the prefix of
                           --  such files.
 
                           if not Is_Regular_File (Name_Buffer (1 .. Name_Len))
                               and then B_Start.all /= "b__"
                           then
                              Add_To_Response_File
                                (Get_Name_String
                                   (Proj.Project.Object_Directory.Name)      &
                                 "b__"                                       &
                                 Get_Name_String (Proj.Project.Library_Name) &
                                 ".ci");
                           end if;
                        end if;
                     end;
                  end if;
 
                  Proj := Proj.Next;
               end loop;
            end if;
 
            Unit := Units_Htable.Get_First (Project_Tree.Units_HT);
            while Unit /= No_Unit_Index loop
 
               --  For gnatls, we only need to put the library units, body or
               --  spec, but not the subunits.
 
               if The_Command = List then
                  if Unit.File_Names (Impl) /= null
                    and then not Unit.File_Names (Impl).Locally_Removed
                  then
                     --  There is a body, check if it is for this project
 
                     if All_Projects
                       or else Unit.File_Names (Impl).Project = Project
                     then
                        Subunit := False;
 
                        if Unit.File_Names (Spec) = null
                          or else Unit.File_Names (Spec).Locally_Removed
                        then
                           --  We have a body with no spec: we need to check if
                           --  this is a subunit, because gnatls will complain
                           --  about subunits.
 
                           declare
                              Src_Ind : constant Source_File_Index :=
                                          Sinput.P.Load_Project_File
                                            (Get_Name_String
                                              (Unit.File_Names
                                                (Impl).Path.Name));
                           begin
                              Subunit :=
                                Sinput.P.Source_File_Is_Subunit (Src_Ind);
                           end;
                        end if;
 
                        if not Subunit then
                           Last_Switches.Increment_Last;
                           Last_Switches.Table (Last_Switches.Last) :=
                             new String'
                               (Get_Name_String
                                    (Unit.File_Names
                                         (Impl).Display_File));
                        end if;
                     end if;
 
                  elsif Unit.File_Names (Spec) /= null
                    and then not Unit.File_Names (Spec).Locally_Removed
                  then
                     --  We have a spec with no body. Check if it is for this
                     --  project.
 
                     if All_Projects or else
                        Unit.File_Names (Spec).Project = Project
                     then
                        Last_Switches.Increment_Last;
                        Last_Switches.Table (Last_Switches.Last) :=
                          new String'(Get_Name_String
                                       (Unit.File_Names (Spec).Display_File));
                     end if;
                  end if;
 
               --  For gnatstack, we put the .ci files corresponding to the
               --  different units, including the binder generated files. We
               --  only need to do that for the library units, body or spec,
               --  but not the subunits.
 
               elsif The_Command = Stack then
                  if Unit.File_Names (Impl) /= null
                    and then not Unit.File_Names (Impl).Locally_Removed
                  then
                     --  There is a body. Check if .ci files for this project
                     --  must be added.
 
                     if Check_Project
                          (Unit.File_Names (Impl).Project, Project)
                     then
                        Subunit := False;
 
                        if Unit.File_Names (Spec) = null
                          or else Unit.File_Names (Spec).Locally_Removed
                        then
                           --  We have a body with no spec: we need to check
                           --  if this is a subunit, because .ci files are not
                           --  generated for subunits.
 
                           declare
                              Src_Ind : constant Source_File_Index :=
                                          Sinput.P.Load_Project_File
                                            (Get_Name_String
                                              (Unit.File_Names
                                                (Impl).Path.Name));
                           begin
                              Subunit :=
                                Sinput.P.Source_File_Is_Subunit (Src_Ind);
                           end;
                        end if;
 
                        if not Subunit then
                           Add_To_Response_File
                             (Get_Name_String
                                (Unit.File_Names
                                   (Impl).Project. Object_Directory.Name) &
                              MLib.Fil.Ext_To
                                (Get_Name_String
                                   (Unit.File_Names (Impl).Display_File),
                                 "ci"));
                        end if;
                     end if;
 
                  elsif Unit.File_Names (Spec) /= null
                    and then not Unit.File_Names (Spec).Locally_Removed
                  then
                     --  Spec with no body, check if it is for this project
 
                     if Check_Project
                          (Unit.File_Names (Spec).Project, Project)
                     then
                        Add_To_Response_File
                          (Get_Name_String
                             (Unit.File_Names
                                (Spec).Project. Object_Directory.Name) &
                           Dir_Separator                               &
                           MLib.Fil.Ext_To
                             (Get_Name_String (Unit.File_Names (Spec).File),
                              "ci"));
                     end if;
                  end if;
 
               else
                  --  For gnatcheck, gnatsync, gnatpp and gnatmetric, put all
                  --  sources of the project, or of all projects if -U was
                  --  specified.
 
                  for Kind in Spec_Or_Body loop
                     if Unit.File_Names (Kind) /= null
                       and then Check_Project
                                  (Unit.File_Names (Kind).Project, Project)
                       and then not Unit.File_Names (Kind).Locally_Removed
                     then
                        Add_To_Response_File
                          (""""                                         &
                           Get_Name_String
                             (Unit.File_Names (Kind).Path.Display_Name) &
                           """",
                           Check_File => False);
                     end if;
                  end loop;
               end if;
 
               Unit := Units_Htable.Get_Next (Project_Tree.Units_HT);
            end loop;
         end;
 
         if FD /= Invalid_FD then
            Close (FD, Success);
 
            if not Success then
               Osint.Fail ("disk full");
            end if;
         end if;
      end if;
   end Check_Files;
 
   -------------------
   -- Check_Project --
   -------------------
 
   function Check_Project
     (Project      : Project_Id;
      Root_Project : Project_Id) return Boolean
   is
      Proj : Project_Id;
 
   begin
      if Project = No_Project then
         return False;
 
      elsif All_Projects or else Project = Root_Project then
         return True;
 
      elsif The_Command = Metric then
         Proj := Root_Project;
         while Proj.Extends /= No_Project loop
            if Project = Proj.Extends then
               return True;
            end if;
 
            Proj := Proj.Extends;
         end loop;
      end if;
 
      return False;
   end Check_Project;
 
   -------------------------------
   -- Check_Relative_Executable --
   -------------------------------
 
   procedure Check_Relative_Executable (Name : in out String_Access) is
      Exec_File_Name : constant String := Name.all;
 
   begin
      if not Is_Absolute_Path (Exec_File_Name) then
         for Index in Exec_File_Name'Range loop
            if Exec_File_Name (Index) = Directory_Separator then
               Fail ("relative executable (""" &
                       Exec_File_Name &
                       """) with directory part not allowed " &
                       "when using project files");
            end if;
         end loop;
 
         Get_Name_String (Project.Exec_Directory.Name);
 
         if Name_Buffer (Name_Len) /= Directory_Separator then
            Name_Len := Name_Len + 1;
            Name_Buffer (Name_Len) := Directory_Separator;
         end if;
 
         Name_Buffer (Name_Len + 1 ..
                        Name_Len + Exec_File_Name'Length) :=
           Exec_File_Name;
         Name_Len := Name_Len + Exec_File_Name'Length;
         Name := new String'(Name_Buffer (1 .. Name_Len));
      end if;
   end Check_Relative_Executable;
 
   --------------------------------
   -- Configuration_Pragmas_File --
   --------------------------------
 
   function Configuration_Pragmas_File return Path_Name_Type is
   begin
      Prj.Env.Create_Config_Pragmas_File (Project, Project_Tree);
      return Project.Config_File_Name;
   end Configuration_Pragmas_File;
 
   ------------------------------
   -- Delete_Temp_Config_Files --
   ------------------------------
 
   procedure Delete_Temp_Config_Files is
      Success : Boolean;
      Proj    : Project_List;
      pragma Warnings (Off, Success);
 
   begin
      --  This should only be called if Keep_Temporary_Files is False
 
      pragma Assert (not Keep_Temporary_Files);
 
      if Project /= No_Project then
         Proj := Project_Tree.Projects;
         while Proj /= null loop
            if Proj.Project.Config_File_Temp then
               Delete_Temporary_File
                 (Project_Tree.Shared, Proj.Project.Config_File_Name);
            end if;
 
            Proj := Proj.Next;
         end loop;
      end if;
 
      --  If a temporary text file that contains a list of files for a tool
      --  has been created, delete this temporary file.
 
      if Temp_File_Name /= No_Path then
         Delete_Temporary_File (Project_Tree.Shared, Temp_File_Name);
      end if;
   end Delete_Temp_Config_Files;
 
   -----------------
   -- Get_Closure --
   -----------------
 
   procedure Get_Closure is
      Args : constant Argument_List :=
               (1 => new String'("-q"),
                2 => new String'("-b"),
                3 => new String'("-P"),
                4 => Project_File,
                5 => ASIS_Main,
                6 => new String'("-bargs"),
                7 => new String'("-R"),
                8 => new String'("-Z"));
      --  Arguments for the invocation of gnatmake which are added to the
      --  Last_Arguments list by this procedure.
 
      FD : File_Descriptor;
      --  File descriptor for the temp file that will get the output of the
      --  invocation of gnatmake.
 
      Name : Path_Name_Type;
      --  Path of the file FD
 
      GN_Name : constant String := Program_Name ("gnatmake", "gnat").all;
      --  Name for gnatmake
 
      GN_Path : constant String_Access := Locate_Exec_On_Path (GN_Name);
      --  Path of gnatmake
 
      Return_Code : Integer;
 
      Unused : Boolean;
      pragma Warnings (Off, Unused);
 
      File : Ada.Text_IO.File_Type;
      Line : String (1 .. 250);
      Last : Natural;
      --  Used to read file if there is an error, it is good enough to display
      --  just 250 characters if the first line of the file is very long.
 
      Unit  : Unit_Index;
      Path  : Path_Name_Type;
 
   begin
      if GN_Path = null then
         Put_Line (Standard_Error, "could not locate " & GN_Name);
         raise Error_Exit;
      end if;
 
      --  Create the temp file
 
      Tempdir.Create_Temp_File (FD, Name);
 
      --  And close it, because on VMS Spawn with a file descriptor created
      --  with Create_Temp_File does not redirect output.
 
      Close (FD);
 
      --  Spawn "gnatmake -q -b -P <project> <main> -bargs -R -Z"
 
      Spawn
        (Program_Name => GN_Path.all,
         Args         => Args,
         Output_File  => Get_Name_String (Name),
         Success      => Unused,
         Return_Code  => Return_Code,
         Err_To_Out   => True);
 
      --  Read the output of the invocation of gnatmake
 
      Open (File, In_File, Get_Name_String (Name));
 
      --  If it was unsuccessful, display the first line in the file and exit
      --  with error.
 
      if Return_Code /= 0 then
         Get_Line (File, Line, Last);
 
         begin
            if not Keep_Temporary_Files then
               Delete (File);
            else
               Close (File);
            end if;
 
         --  Don't crash if it is not possible to delete or close the file,
         --  just ignore the situation.
 
         exception
            when others =>
               null;
         end;
 
         Put_Line (Standard_Error, Line (1 .. Last));
         Put_Line
           (Standard_Error, "could not get closure of " & ASIS_Main.all);
         raise Error_Exit;
 
      else
         --  Get each file name in the file, find its path and add it the
         --  list of arguments.
 
         while not End_Of_File (File) loop
            Get_Line (File, Line, Last);
            Path := No_Path;
 
            Unit := Units_Htable.Get_First (Project_Tree.Units_HT);
            while Unit /= No_Unit_Index loop
               if Unit.File_Names (Spec) /= null
                 and then
                   Get_Name_String (Unit.File_Names (Spec).File) =
                      Line (1 .. Last)
               then
                  Path := Unit.File_Names (Spec).Path.Name;
                  exit;
 
               elsif Unit.File_Names (Impl) /= null
                 and then
                   Get_Name_String (Unit.File_Names (Impl).File) =
                     Line (1 .. Last)
               then
                  Path := Unit.File_Names (Impl).Path.Name;
                  exit;
               end if;
 
               Unit := Units_Htable.Get_Next (Project_Tree.Units_HT);
            end loop;
 
            Last_Switches.Increment_Last;
 
            if Path /= No_Path then
               Last_Switches.Table (Last_Switches.Last) :=
                  new String'(Get_Name_String (Path));
 
            else
               Last_Switches.Table (Last_Switches.Last) :=
                 new String'(Line (1 .. Last));
            end if;
         end loop;
 
         begin
            if not Keep_Temporary_Files then
               Delete (File);
            else
               Close (File);
            end if;
 
         --  Don't crash if it is not possible to delete or close the file,
         --  just ignore the situation.
 
         exception
            when others =>
               null;
         end;
      end if;
   end Get_Closure;
 
   ------------------
   -- Mapping_File --
   ------------------
 
   function Mapping_File return Path_Name_Type is
      Result : Path_Name_Type;
   begin
      Prj.Env.Create_Mapping_File
        (Project  => Project,
         Language => Name_Ada,
         In_Tree  => Project_Tree,
         Name     => Result);
      return Result;
   end Mapping_File;
 
   ------------------
   -- Process_Link --
   ------------------
 
   procedure Process_Link is
      Look_For_Executable : Boolean := True;
      Libraries_Present   : Boolean := False;
      Path_Option         : constant String_Access :=
                              MLib.Linker_Library_Path_Option;
      Prj                 : Project_Id := Project;
      Arg                 : String_Access;
      Last                : Natural := 0;
      Skip_Executable     : Boolean := False;
 
   begin
      --  Add the default search directories, to be able to find
      --  libgnat in call to MLib.Utl.Lib_Directory.
 
      Add_Default_Search_Dirs;
 
      Library_Paths.Set_Last (0);
 
      --  Check if there are library project files
 
      if MLib.Tgt.Support_For_Libraries /= None then
         Set_Libraries (Project, Project_Tree, Libraries_Present);
      end if;
 
      --  If there are, add the necessary additional switches
 
      if Libraries_Present then
 
         --  Add -L<lib_dir> -lgnarl -lgnat -Wl,-rpath,<lib_dir>
 
         Last_Switches.Increment_Last;
         Last_Switches.Table (Last_Switches.Last) :=
           new String'("-L" & MLib.Utl.Lib_Directory);
         Last_Switches.Increment_Last;
         Last_Switches.Table (Last_Switches.Last) :=
           new String'("-lgnarl");
         Last_Switches.Increment_Last;
         Last_Switches.Table (Last_Switches.Last) :=
           new String'("-lgnat");
 
         --  If Path_Option is not null, create the switch ("-Wl,-rpath," or
         --  equivalent) with all the library dirs plus the standard GNAT
         --  library dir.
 
         if Path_Option /= null then
            declare
               Option  : String_Access;
               Length  : Natural := Path_Option'Length;
               Current : Natural;
 
            begin
               if MLib.Separate_Run_Path_Options then
 
                  --  We are going to create one switch of the form
                  --  "-Wl,-rpath,dir_N" for each directory to consider.
 
                  --  One switch for each library directory
 
                  for Index in
                    Library_Paths.First .. Library_Paths.Last
                  loop
                     Last_Switches.Increment_Last;
                     Last_Switches.Table
                       (Last_Switches.Last) := new String'
                       (Path_Option.all &
                        Last_Switches.Table (Index).all);
                  end loop;
 
                  --  One switch for the standard GNAT library dir
 
                  Last_Switches.Increment_Last;
                  Last_Switches.Table
                    (Last_Switches.Last) := new String'
                    (Path_Option.all & MLib.Utl.Lib_Directory);
 
               else
                  --  First, compute the exact length for the switch
 
                  for Index in
                    Library_Paths.First .. Library_Paths.Last
                  loop
                     --  Add the length of the library dir plus one for the
                     --  directory separator.
 
                     Length :=
                       Length +
                         Library_Paths.Table (Index)'Length + 1;
                  end loop;
 
                  --  Finally, add the length of the standard GNAT library dir
 
                  Length := Length + MLib.Utl.Lib_Directory'Length;
                  Option := new String (1 .. Length);
                  Option (1 .. Path_Option'Length) := Path_Option.all;
                  Current := Path_Option'Length;
 
                  --  Put each library dir followed by a dir separator
 
                  for Index in
                    Library_Paths.First .. Library_Paths.Last
                  loop
                     Option
                       (Current + 1 ..
                          Current +
                            Library_Paths.Table (Index)'Length) :=
                       Library_Paths.Table (Index).all;
                     Current :=
                       Current +
                         Library_Paths.Table (Index)'Length + 1;
                     Option (Current) := Path_Separator;
                  end loop;
 
                  --  Finally put the standard GNAT library dir
 
                  Option
                    (Current + 1 ..
                       Current + MLib.Utl.Lib_Directory'Length) :=
                      MLib.Utl.Lib_Directory;
 
                  --  And add the switch to the last switches
 
                  Last_Switches.Increment_Last;
                  Last_Switches.Table (Last_Switches.Last) :=
                    Option;
               end if;
            end;
         end if;
      end if;
 
      --  Check if the first ALI file specified can be found, either in the
      --  object directory of the main project or in an object directory of a
      --  project file extended by the main project. If the ALI file can be
      --  found, replace its name with its absolute path.
 
      Skip_Executable := False;
 
      Switch_Loop : for J in 1 .. Last_Switches.Last loop
 
         --  If we have an executable just reset the flag
 
         if Skip_Executable then
            Skip_Executable := False;
 
         --  If -o, set flag so that next switch is not processed
 
         elsif Last_Switches.Table (J).all = "-o" then
            Skip_Executable := True;
 
         --  Normal case
 
         else
            declare
               Switch    : constant String :=
                             Last_Switches.Table (J).all;
               ALI_File  : constant String (1 .. Switch'Length + 4) :=
                             Switch & ".ali";
 
               Test_Existence : Boolean := False;
 
            begin
               Last := Switch'Length;
 
               --  Skip real switches
 
               if Switch'Length /= 0
                 and then Switch (Switch'First) /= '-'
               then
                  --  Append ".ali" if file name does not end with it
 
                  if Switch'Length <= 4
                    or else Switch (Switch'Last - 3 .. Switch'Last) /= ".ali"
                  then
                     Last := ALI_File'Last;
                  end if;
 
                  --  If file name includes directory information, stop if ALI
                  --  file exists.
 
                  if Is_Absolute_Path (ALI_File (1 .. Last)) then
                     Test_Existence := True;
 
                  else
                     for K in Switch'Range loop
                        if Switch (K) = '/'
                          or else Switch (K) = Directory_Separator
                        then
                           Test_Existence := True;
                           exit;
                        end if;
                     end loop;
                  end if;
 
                  if Test_Existence then
                     if Is_Regular_File (ALI_File (1 .. Last)) then
                        exit Switch_Loop;
                     end if;
 
                  --  Look in object directories if ALI file exists
 
                  else
                     Project_Loop : loop
                        declare
                           Dir : constant String :=
                                   Get_Name_String (Prj.Object_Directory.Name);
                        begin
                           if Is_Regular_File
                                (Dir &
                                 ALI_File (1 .. Last))
                           then
                              --  We have found the correct project, so we
                              --  replace the file with the absolute path.
 
                              Last_Switches.Table (J) :=
                                new String'(Dir & ALI_File (1 .. Last));
 
                              --  And we are done
 
                              exit Switch_Loop;
                           end if;
                        end;
 
                        --  Go to the project being extended, if any
 
                        Prj := Prj.Extends;
                        exit Project_Loop when Prj = No_Project;
                     end loop Project_Loop;
                  end if;
               end if;
            end;
         end if;
      end loop Switch_Loop;
 
      --  If a relative path output file has been specified, we add the exec
      --  directory.
 
      for J in reverse 1 .. Last_Switches.Last - 1 loop
         if Last_Switches.Table (J).all = "-o" then
            Check_Relative_Executable
              (Name => Last_Switches.Table (J + 1));
            Look_For_Executable := False;
            exit;
         end if;
      end loop;
 
      if Look_For_Executable then
         for J in reverse 1 .. First_Switches.Last - 1 loop
            if First_Switches.Table (J).all = "-o" then
               Look_For_Executable := False;
               Check_Relative_Executable
                 (Name => First_Switches.Table (J + 1));
               exit;
            end if;
         end loop;
      end if;
 
      --  If no executable is specified, then find the name of the first ALI
      --  file on the command line and issue a -o switch with the absolute path
      --  of the executable in the exec directory.
 
      if Look_For_Executable then
         for J in 1 .. Last_Switches.Last loop
            Arg  := Last_Switches.Table (J);
            Last := 0;
 
            if Arg'Length /= 0 and then Arg (Arg'First) /= '-' then
               if Arg'Length > 4
                 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
               then
                  Last := Arg'Last - 4;
 
               elsif Is_Regular_File (Arg.all & ".ali") then
                  Last := Arg'Last;
               end if;
 
               if Last /= 0 then
                  Last_Switches.Increment_Last;
                  Last_Switches.Table (Last_Switches.Last) :=
                    new String'("-o");
                  Get_Name_String (Project.Exec_Directory.Name);
                  Last_Switches.Increment_Last;
                  Last_Switches.Table (Last_Switches.Last) :=
                    new String'(Name_Buffer (1 .. Name_Len) &
                                Executable_Name
                                  (Base_Name (Arg (Arg'First .. Last))));
                  exit;
               end if;
            end if;
         end loop;
      end if;
   end Process_Link;
 
   ---------------------
   -- Set_Library_For --
   ---------------------
 
   procedure Set_Library_For
     (Project           : Project_Id;
      Tree              : Project_Tree_Ref;
      Libraries_Present : in out Boolean)
   is
      pragma Unreferenced (Tree);
 
      Path_Option : constant String_Access :=
                      MLib.Linker_Library_Path_Option;
 
   begin
      --  Case of library project
 
      if Project.Library then
         Libraries_Present := True;
 
         --  Add the -L switch
 
         Last_Switches.Increment_Last;
         Last_Switches.Table (Last_Switches.Last) :=
           new String'("-L" & Get_Name_String (Project.Library_Dir.Name));
 
         --  Add the -l switch
 
         Last_Switches.Increment_Last;
         Last_Switches.Table (Last_Switches.Last) :=
           new String'("-l" & Get_Name_String (Project.Library_Name));
 
         --  Add the directory to table Library_Paths, to be processed later
         --  if library is not static and if Path_Option is not null.
 
         if Project.Library_Kind /= Static
           and then Path_Option /= null
         then
            Library_Paths.Increment_Last;
            Library_Paths.Table (Library_Paths.Last) :=
              new String'(Get_Name_String (Project.Library_Dir.Name));
         end if;
      end if;
   end Set_Library_For;
 
   ---------------------------
   -- Test_If_Relative_Path --
   ---------------------------
 
   procedure Test_If_Relative_Path
     (Switch : in out String_Access;
      Parent : String)
   is
   begin
      Makeutl.Test_If_Relative_Path
        (Switch, Parent,
         Do_Fail              => Osint.Fail'Access,
         Including_Non_Switch => False,
         Including_RTS        => True);
   end Test_If_Relative_Path;
 
   -------------------
   -- Non_VMS_Usage --
   -------------------
 
   procedure Non_VMS_Usage is
   begin
      Output_Version;
      New_Line;
      Put_Line ("List of available commands");
      New_Line;
 
      for C in Command_List'Range loop
 
         --  No usage for VMS only command or for Sync
 
         if not Command_List (C).VMS_Only and then C /= Sync then
            if Targparm.AAMP_On_Target then
               Put ("gnaampcmd ");
            else
               Put ("gnat ");
            end if;
 
            Put (To_Lower (Command_List (C).Cname.all));
            Set_Col (25);
 
            --  Never call gnatstack with a prefix
 
            if C = Stack then
               Put (Command_List (C).Unixcmd.all);
            else
               Put (Program_Name (Command_List (C).Unixcmd.all, "gnat").all);
            end if;
 
            declare
               Sws : Argument_List_Access renames Command_List (C).Unixsws;
            begin
               if Sws /= null then
                  for J in Sws'Range loop
                     Put (' ');
                     Put (Sws (J).all);
                  end loop;
               end if;
            end;
 
            New_Line;
         end if;
      end loop;
 
      New_Line;
      Put_Line ("All commands except chop, krunch and preprocess " &
                "accept project file switches -vPx, -Pprj and -Xnam=val");
      New_Line;
   end Non_VMS_Usage;
 
--  Start of processing for GNATCmd
 
begin
   --  All output from GNATCmd is debugging or error output: send to stderr
 
   Set_Standard_Error;
 
   --  Initializations
 
   Csets.Initialize;
   Snames.Initialize;
 
   Prj.Tree.Initialize (Root_Environment, Gnatmake_Flags);
   Prj.Env.Initialize_Default_Project_Path
     (Root_Environment.Project_Path,
      Target_Name => Sdefault.Target_Name.all);
 
   Project_Node_Tree := new Project_Node_Tree_Data;
   Prj.Tree.Initialize (Project_Node_Tree);
 
   Prj.Initialize (Project_Tree);
 
   Last_Switches.Init;
   Last_Switches.Set_Last (0);
 
   First_Switches.Init;
   First_Switches.Set_Last (0);
   Carg_Switches.Init;
   Carg_Switches.Set_Last (0);
   Rules_Switches.Init;
   Rules_Switches.Set_Last (0);
 
   VMS_Conv.Initialize;
 
   --  Add the default search directories, to be able to find system.ads in the
   --  subsequent call to Targparm.Get_Target_Parameters.
 
   Add_Default_Search_Dirs;
 
   --  Get target parameters so that AAMP_On_Target will be set, for testing in
   --  Osint.Program_Name to handle the mapping of GNAAMP tool names.
 
   Targparm.Get_Target_Parameters;
 
   --  Put the command line in environment variable GNAT_DRIVER_COMMAND_LINE,
   --  so that the spawned tool may know the way the GNAT driver was invoked.
 
   Name_Len := 0;
   Add_Str_To_Name_Buffer (Command_Name);
 
   for J in 1 .. Argument_Count loop
      Add_Char_To_Name_Buffer (' ');
      Add_Str_To_Name_Buffer (Argument (J));
   end loop;
 
   --  On OpenVMS, setenv creates a logical whose length is limited to
   --  255 bytes.
 
   if OpenVMS and then Name_Len > Max_OpenVMS_Logical_Length then
      Name_Buffer (Max_OpenVMS_Logical_Length - 2
                     .. Max_OpenVMS_Logical_Length) := "...";
      Name_Len := Max_OpenVMS_Logical_Length;
   end if;
 
   Setenv ("GNAT_DRIVER_COMMAND_LINE", Name_Buffer (1 .. Name_Len));
 
   --  Add the directory where the GNAT driver is invoked in front of the path,
   --  if the GNAT driver is invoked with directory information. Do not do this
   --  for VMS, where the notion of path does not really exist.
 
   if not OpenVMS then
      declare
         Command : constant String := Command_Name;
 
      begin
         for Index in reverse Command'Range loop
            if Command (Index) = Directory_Separator then
               declare
                  Absolute_Dir : constant String :=
                                   Normalize_Pathname
                                     (Command (Command'First .. Index));
 
                  PATH : constant String :=
                           Absolute_Dir & Path_Separator & Getenv ("PATH").all;
 
               begin
                  Setenv ("PATH", PATH);
               end;
 
               exit;
            end if;
         end loop;
      end;
   end if;
 
   --  If on VMS, or if VMS emulation is on, convert VMS style /qualifiers,
   --  filenames and pathnames to Unix style.
 
   if Hostparm.OpenVMS
     or else To_Lower (Getenv ("EMULATE_VMS").all) = "true"
   then
      VMS_Conversion (The_Command);
 
      B_Start := new String'("b__");
 
   --  If not on VMS, scan the command line directly
 
   else
      if Argument_Count = 0 then
         Non_VMS_Usage;
         return;
      else
         begin
            loop
               if Argument_Count > Command_Arg
                 and then Argument (Command_Arg) = "-v"
               then
                  Verbose_Mode := True;
                  Command_Arg := Command_Arg + 1;
 
               elsif Argument_Count > Command_Arg
                 and then Argument (Command_Arg) = "-dn"
               then
                  Keep_Temporary_Files := True;
                  Command_Arg := Command_Arg + 1;
 
               else
                  exit;
               end if;
            end loop;
 
            The_Command := Real_Command_Type'Value (Argument (Command_Arg));
 
            if Command_List (The_Command).VMS_Only then
               Non_VMS_Usage;
               Fail
                 ("Command """
                  & Command_List (The_Command).Cname.all
                  & """ can only be used on VMS");
            end if;
 
         exception
            when Constraint_Error =>
 
               --  Check if it is an alternate command
 
               declare
                  Alternate : Alternate_Command;
 
               begin
                  Alternate := Alternate_Command'Value
                                              (Argument (Command_Arg));
                  The_Command := Corresponding_To (Alternate);
 
               exception
                  when Constraint_Error =>
                     Non_VMS_Usage;
                     Fail ("Unknown command: " & Argument (Command_Arg));
               end;
         end;
 
         --  Get the arguments from the command line and from the eventual
         --  argument file(s) specified on the command line.
 
         for Arg in Command_Arg + 1 .. Argument_Count loop
            declare
               The_Arg : constant String := Argument (Arg);
 
            begin
               --  Check if an argument file is specified
 
               if The_Arg (The_Arg'First) = '@' then
                  declare
                     Arg_File : Ada.Text_IO.File_Type;
                     Line     : String (1 .. 256);
                     Last     : Natural;
 
                  begin
                     --  Open the file and fail if the file cannot be found
 
                     begin
                        Open
                          (Arg_File, In_File,
                           The_Arg (The_Arg'First + 1 .. The_Arg'Last));
 
                     exception
                        when others =>
                           Put
                             (Standard_Error, "Cannot open argument file """);
                           Put
                             (Standard_Error,
                              The_Arg (The_Arg'First + 1 .. The_Arg'Last));
 
                           Put_Line (Standard_Error, """");
                           raise Error_Exit;
                     end;
 
                     --  Read line by line and put the content of each non-
                     --  empty line in the Last_Switches table.
 
                     while not End_Of_File (Arg_File) loop
                        Get_Line (Arg_File, Line, Last);
 
                        if Last /= 0 then
                           Last_Switches.Increment_Last;
                           Last_Switches.Table (Last_Switches.Last) :=
                             new String'(Line (1 .. Last));
                        end if;
                     end loop;
 
                     Close (Arg_File);
                  end;
 
               else
                  --  It is not an argument file; just put the argument in
                  --  the Last_Switches table.
 
                  Last_Switches.Increment_Last;
                  Last_Switches.Table (Last_Switches.Last) :=
                    new String'(The_Arg);
               end if;
            end;
         end loop;
      end if;
   end if;
 
   declare
      Program   : String_Access;
      Exec_Path : String_Access;
 
   begin
      if The_Command = Stack then
 
         --  Never call gnatstack with a prefix
 
         Program := new String'(Command_List (The_Command).Unixcmd.all);
 
      else
         Program :=
           Program_Name (Command_List (The_Command).Unixcmd.all, "gnat");
      end if;
 
      --  For the tools where the GNAT driver processes the project files,
      --  allow shared library projects to import projects that are not shared
      --  library projects, to avoid adding a switch for these tools. For the
      --  builder (gnatmake), if a shared library project imports a project
      --  that is not a shared library project and the appropriate switch is
      --  not specified, the invocation of gnatmake will fail.
 
      Opt.Unchecked_Shared_Lib_Imports := True;
 
      --  Locate the executable for the command
 
      Exec_Path := Locate_Exec_On_Path (Program.all);
 
      if Exec_Path = null then
         Put_Line (Standard_Error, "could not locate " & Program.all);
         raise Error_Exit;
      end if;
 
      --  If there are switches for the executable, put them as first switches
 
      if Command_List (The_Command).Unixsws /= null then
         for J in Command_List (The_Command).Unixsws'Range loop
            First_Switches.Increment_Last;
            First_Switches.Table (First_Switches.Last) :=
              Command_List (The_Command).Unixsws (J);
         end loop;
      end if;
 
      --  For BIND, CHECK, ELIM, FIND, LINK, LIST, METRIC, PRETTY, STACK, STUB,
      --  SYNC and XREF, look for project file related switches.
 
      case The_Command is
         when Bind =>
            Tool_Package_Name := Name_Binder;
            Packages_To_Check := Packages_To_Check_By_Binder;
         when Check =>
            Tool_Package_Name := Name_Check;
            Packages_To_Check := Packages_To_Check_By_Check;
         when Elim =>
            Tool_Package_Name := Name_Eliminate;
            Packages_To_Check := Packages_To_Check_By_Eliminate;
         when Find =>
            Tool_Package_Name := Name_Finder;
            Packages_To_Check := Packages_To_Check_By_Finder;
         when Link =>
            Tool_Package_Name := Name_Linker;
            Packages_To_Check := Packages_To_Check_By_Linker;
         when List =>
            Tool_Package_Name := Name_Gnatls;
            Packages_To_Check := Packages_To_Check_By_Gnatls;
         when Metric =>
            Tool_Package_Name := Name_Metrics;
            Packages_To_Check := Packages_To_Check_By_Metric;
         when Pretty =>
            Tool_Package_Name := Name_Pretty_Printer;
            Packages_To_Check := Packages_To_Check_By_Pretty;
         when Stack =>
            Tool_Package_Name := Name_Stack;
            Packages_To_Check := Packages_To_Check_By_Stack;
         when Stub =>
            Tool_Package_Name := Name_Gnatstub;
            Packages_To_Check := Packages_To_Check_By_Gnatstub;
         when Sync =>
            Tool_Package_Name := Name_Synchronize;
            Packages_To_Check := Packages_To_Check_By_Sync;
         when Xref =>
            Tool_Package_Name := Name_Cross_Reference;
            Packages_To_Check := Packages_To_Check_By_Xref;
         when others =>
            Tool_Package_Name := No_Name;
      end case;
 
      if Tool_Package_Name /= No_Name then
 
         --  Check that the switches are consistent. Detect project file
         --  related switches.
 
         Inspect_Switches : declare
            Arg_Num : Positive := 1;
            Argv    : String_Access;
 
            procedure Remove_Switch (Num : Positive);
            --  Remove a project related switch from table Last_Switches
 
            -------------------
            -- Remove_Switch --
            -------------------
 
            procedure Remove_Switch (Num : Positive) is
            begin
               Last_Switches.Table (Num .. Last_Switches.Last - 1) :=
                 Last_Switches.Table (Num + 1 .. Last_Switches.Last);
               Last_Switches.Decrement_Last;
            end Remove_Switch;
 
         --  Start of processing for Inspect_Switches
 
         begin
            while Arg_Num <= Last_Switches.Last loop
               Argv := Last_Switches.Table (Arg_Num);
 
               if Argv (Argv'First) = '-' then
                  if Argv'Length = 1 then
                     Fail
                       ("switch character cannot be followed by a blank");
                  end if;
 
                  --  The two style project files (-p and -P) cannot be used
                  --  together
 
                  if (The_Command = Find or else The_Command = Xref)
                    and then Argv (2) = 'p'
                  then
                     Old_Project_File_Used := True;
                     if Project_File /= null then
                        Fail ("-P and -p cannot be used together");
                     end if;
                  end if;
 
                  --  --subdirs=... Specify Subdirs
 
                  if Argv'Length > Makeutl.Subdirs_Option'Length
                    and then
                      Argv
                       (Argv'First ..
                        Argv'First + Makeutl.Subdirs_Option'Length - 1) =
                          Makeutl.Subdirs_Option
                  then
                     Subdirs :=
                       new String'
                         (Argv
                           (Argv'First + Makeutl.Subdirs_Option'Length ..
                            Argv'Last));
 
                     Remove_Switch (Arg_Num);
 
                  --  -aPdir  Add dir to the project search path
 
                  elsif Argv'Length > 3
                    and then Argv (Argv'First + 1 .. Argv'First + 2) = "aP"
                  then
                     Prj.Env.Add_Directories
                       (Root_Environment.Project_Path,
                        Argv (Argv'First + 3 .. Argv'Last));
 
                     Remove_Switch (Arg_Num);
 
                  --  -eL  Follow links for files
 
                  elsif Argv.all = "-eL" then
                     Follow_Links_For_Files := True;
                     Follow_Links_For_Dirs  := True;
 
                     Remove_Switch (Arg_Num);
 
                  --  -vPx  Specify verbosity while parsing project files
 
                  elsif Argv'Length = 4
                    and then Argv (Argv'First + 1 .. Argv'First + 2) = "vP"
                  then
                     case Argv (Argv'Last) is
                        when '0' =>
                           Current_Verbosity := Prj.Default;
                        when '1' =>
                           Current_Verbosity := Prj.Medium;
                        when '2' =>
                           Current_Verbosity := Prj.High;
                        when others =>
                           Fail ("Invalid switch: " & Argv.all);
                     end case;
 
                     Remove_Switch (Arg_Num);
 
                  --  -Pproject_file  Specify project file to be used
 
                  elsif Argv (Argv'First + 1) = 'P' then
 
                     --  Only one -P switch can be used
 
                     if Project_File /= null then
                        Fail
                          (Argv.all
                           & ": second project file forbidden (first is """
                           & Project_File.all
                           & """)");
 
                     --  The two style project files (-p and -P) cannot be
                     --  used together.
 
                     elsif Old_Project_File_Used then
                        Fail ("-p and -P cannot be used together");
 
                     elsif Argv'Length = 2 then
 
                        --  There is space between -P and the project file
                        --  name. -P cannot be the last option.
 
                        if Arg_Num = Last_Switches.Last then
                           Fail ("project file name missing after -P");
 
                        else
                           Remove_Switch (Arg_Num);
                           Argv := Last_Switches.Table (Arg_Num);
 
                           --  After -P, there must be a project file name,
                           --  not another switch.
 
                           if Argv (Argv'First) = '-' then
                              Fail ("project file name missing after -P");
 
                           else
                              Project_File := new String'(Argv.all);
                           end if;
                        end if;
 
                     else
                        --  No space between -P and project file name
 
                        Project_File :=
                          new String'(Argv (Argv'First + 2 .. Argv'Last));
                     end if;
 
                     Remove_Switch (Arg_Num);
 
                  --  -Xexternal=value Specify an external reference to be
                  --                   used in project files
 
                  elsif Argv'Length >= 5
                    and then Argv (Argv'First + 1) = 'X'
                  then
                     if not Check (Root_Environment.External,
                                    Argv (Argv'First + 2 .. Argv'Last))
                     then
                        Fail (Argv.all
                              & " is not a valid external assignment.");
                     end if;
 
                     Remove_Switch (Arg_Num);
 
                  elsif
                    (The_Command = Check  or else
                     The_Command = Sync   or else
                     The_Command = Pretty or else
                     The_Command = Metric or else
                     The_Command = Stack  or else
                     The_Command = List)
                    and then Argv'Length = 2
                    and then Argv (2) = 'U'
                  then
                     All_Projects := True;
                     Remove_Switch (Arg_Num);
 
                  else
                     Arg_Num := Arg_Num + 1;
                  end if;
 
               elsif ((The_Command = Check and then Argv (Argv'First) /= '+')
                        or else The_Command = Sync
                        or else The_Command = Metric
                        or else The_Command = Pretty)
                 and then Project_File /= null
                 and then All_Projects
               then
                  if ASIS_Main /= null then
                     Fail ("cannot specify more than one main after -U");
                  else
                     ASIS_Main := Argv;
                     Remove_Switch (Arg_Num);
                  end if;
 
               else
                  Arg_Num := Arg_Num + 1;
               end if;
            end loop;
         end Inspect_Switches;
      end if;
 
      --  If there is a project file specified, parse it, get the switches
      --  for the tool and setup PATH environment variables.
 
      if Project_File /= null then
         Prj.Pars.Set_Verbosity (To => Current_Verbosity);
 
         Prj.Pars.Parse
           (Project           => Project,
            In_Tree           => Project_Tree,
            In_Node_Tree      => Project_Node_Tree,
            Project_File_Name => Project_File.all,
            Env               => Root_Environment,
            Packages_To_Check => Packages_To_Check);
 
         --  Prj.Pars.Parse calls Set_Standard_Output, reset to stderr
 
         Set_Standard_Error;
 
         if Project = Prj.No_Project then
            Fail ("""" & Project_File.all & """ processing failed");
         end if;
 
         --  Check if a package with the name of the tool is in the project
         --  file and if there is one, get the switches, if any, and scan them.
 
         declare
            Pkg : constant Prj.Package_Id :=
                    Prj.Util.Value_Of
                      (Name        => Tool_Package_Name,
                       In_Packages => Project.Decl.Packages,
                       Shared      => Project_Tree.Shared);
 
            Element : Package_Element;
 
            Switches_Array : Array_Element_Id;
 
            The_Switches : Prj.Variable_Value;
            Current      : Prj.String_List_Id;
            The_String   : String_Element;
 
            Main : String_Access := null;
 
         begin
            if Pkg /= No_Package then
               Element := Project_Tree.Shared.Packages.Table (Pkg);
 
               --  Packages Gnatls and Gnatstack have a single attribute
               --  Switches, that is not an associative array.
 
               if The_Command = List or else The_Command = Stack then
                  The_Switches :=
                    Prj.Util.Value_Of
                    (Variable_Name => Snames.Name_Switches,
                     In_Variables  => Element.Decl.Attributes,
                     Shared        => Project_Tree.Shared);
 
               --  Packages Binder (for gnatbind), Cross_Reference (for
               --  gnatxref), Linker (for gnatlink), Finder (for gnatfind),
               --  Pretty_Printer (for gnatpp), Eliminate (for gnatelim), Check
               --  (for gnatcheck), and Metric (for gnatmetric) have an
               --  attributed Switches, an associative array, indexed by the
               --  name of the file.
 
               --  They also have an attribute Default_Switches, indexed by the
               --  name of the programming language.
 
               else
                  --  First check if there is a single main
 
                  for J in 1 .. Last_Switches.Last loop
                     if Last_Switches.Table (J) (1) /= '-' then
                        if Main = null then
                           Main := Last_Switches.Table (J);
 
                        else
                           Main := null;
                           exit;
                        end if;
                     end if;
                  end loop;
 
                  if Main /= null then
                     Switches_Array :=
                       Prj.Util.Value_Of
                         (Name      => Name_Switches,
                          In_Arrays => Element.Decl.Arrays,
                          Shared    => Project_Tree.Shared);
                     Name_Len := 0;
                     Add_Str_To_Name_Buffer (Main.all);
                     The_Switches := Prj.Util.Value_Of
                       (Index     => Name_Find,
                        Src_Index => 0,
                        In_Array  => Switches_Array,
                        Shared    => Project_Tree.Shared);
                  end if;
 
                  if The_Switches.Kind = Prj.Undefined then
                     Switches_Array :=
                       Prj.Util.Value_Of
                         (Name      => Name_Default_Switches,
                          In_Arrays => Element.Decl.Arrays,
                          Shared    => Project_Tree.Shared);
                     The_Switches := Prj.Util.Value_Of
                       (Index     => Name_Ada,
                        Src_Index => 0,
                        In_Array  => Switches_Array,
                        Shared    => Project_Tree.Shared);
                  end if;
               end if;
 
               --  If there are switches specified in the package of the
               --  project file corresponding to the tool, scan them.
 
               case The_Switches.Kind is
                  when Prj.Undefined =>
                     null;
 
                  when Prj.Single =>
                     declare
                        Switch : constant String :=
                                   Get_Name_String (The_Switches.Value);
 
                     begin
                        if Switch'Length > 0 then
                           First_Switches.Increment_Last;
                           First_Switches.Table (First_Switches.Last) :=
                             new String'(Switch);
                        end if;
                     end;
 
                  when Prj.List =>
                     Current := The_Switches.Values;
                     while Current /= Prj.Nil_String loop
                        The_String := Project_Tree.Shared.String_Elements.
                                        Table (Current);
 
                        declare
                           Switch : constant String :=
                             Get_Name_String (The_String.Value);
 
                        begin
                           if Switch'Length > 0 then
                              First_Switches.Increment_Last;
                              First_Switches.Table (First_Switches.Last) :=
                                new String'(Switch);
                           end if;
                        end;
 
                        Current := The_String.Next;
                     end loop;
               end case;
            end if;
         end;
 
         if        The_Command = Bind
           or else The_Command = Link
           or else The_Command = Elim
         then
            Change_Dir (Get_Name_String (Project.Object_Directory.Name));
         end if;
 
         --  Set up the env vars for project path files
 
         Prj.Env.Set_Ada_Paths
           (Project, Project_Tree, Including_Libraries => False);
 
         --  For gnatcheck, gnatstub, gnatmetric, gnatpp and gnatelim, create
         --  a configuration pragmas file, if necessary.
 
         if        The_Command = Pretty
           or else The_Command = Metric
           or else The_Command = Stub
           or else The_Command = Elim
           or else The_Command = Check
           or else The_Command = Sync
         then
            --  If there are switches in package Compiler, put them in the
            --  Carg_Switches table.
 
            declare
               Pkg  : constant Prj.Package_Id :=
                        Prj.Util.Value_Of
                          (Name        => Name_Compiler,
                           In_Packages => Project.Decl.Packages,
                           Shared      => Project_Tree.Shared);
 
               Element : Package_Element;
 
               Switches_Array : Array_Element_Id;
 
               The_Switches : Prj.Variable_Value;
               Current      : Prj.String_List_Id;
               The_String   : String_Element;
 
               Main    : String_Access := null;
               Main_Id : Name_Id;
 
            begin
               if Pkg /= No_Package then
 
                  --  First, check if there is a single main specified
 
                  for J in 1  .. Last_Switches.Last loop
                     if Last_Switches.Table (J) (1) /= '-' then
                        if Main = null then
                           Main := Last_Switches.Table (J);
 
                        else
                           Main := null;
                           exit;
                        end if;
                     end if;
                  end loop;
 
                  Element := Project_Tree.Shared.Packages.Table (Pkg);
 
                  --  If there is a single main and there is compilation
                  --  switches specified in the project file, use them.
 
                  if Main /= null and then not All_Projects then
                     Name_Len := Main'Length;
                     Name_Buffer (1 .. Name_Len) := Main.all;
                     Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
                     Main_Id := Name_Find;
 
                     Switches_Array :=
                       Prj.Util.Value_Of
                         (Name      => Name_Switches,
                          In_Arrays => Element.Decl.Arrays,
                          Shared    => Project_Tree.Shared);
                     The_Switches := Prj.Util.Value_Of
                       (Index     => Main_Id,
                        Src_Index => 0,
                        In_Array  => Switches_Array,
                        Shared    => Project_Tree.Shared);
                  end if;
 
                  --  Otherwise, get the Default_Switches ("Ada")
 
                  if The_Switches.Kind = Undefined then
                     Switches_Array :=
                       Prj.Util.Value_Of
                         (Name      => Name_Default_Switches,
                          In_Arrays => Element.Decl.Arrays,
                          Shared    => Project_Tree.Shared);
                     The_Switches := Prj.Util.Value_Of
                       (Index     => Name_Ada,
                        Src_Index => 0,
                        In_Array  => Switches_Array,
                        Shared    => Project_Tree.Shared);
                  end if;
 
                  --  If there are switches specified, put them in the
                  --  Carg_Switches table.
 
                  case The_Switches.Kind is
                     when Prj.Undefined =>
                        null;
 
                     when Prj.Single =>
                        declare
                           Switch : constant String :=
                                      Get_Name_String (The_Switches.Value);
                        begin
                           if Switch'Length > 0 then
                              Add_To_Carg_Switches (new String'(Switch));
                           end if;
                        end;
 
                     when Prj.List =>
                        Current := The_Switches.Values;
                        while Current /= Prj.Nil_String loop
                           The_String := Project_Tree.Shared.String_Elements
                             .Table (Current);
 
                           declare
                              Switch : constant String :=
                                         Get_Name_String (The_String.Value);
                           begin
                              if Switch'Length > 0 then
                                 Add_To_Carg_Switches (new String'(Switch));
                              end if;
                           end;
 
                           Current := The_String.Next;
                        end loop;
                  end case;
               end if;
            end;
 
            --  If -cargs is one of the switches, move the following switches
            --  to the Carg_Switches table.
 
            for J in 1 .. First_Switches.Last loop
               if First_Switches.Table (J).all = "-cargs" then
                  declare
                     K    : Positive;
                     Last : Natural;
 
                  begin
                     --  Move the switches that are before -rules when the
                     --  command is CHECK.
 
                     K := J + 1;
                     while K <= First_Switches.Last
                       and then
                        (The_Command /= Check
                          or else First_Switches.Table (K).all /= "-rules")
                     loop
                        Add_To_Carg_Switches (First_Switches.Table (K));
                        K := K + 1;
                     end loop;
 
                     if K > First_Switches.Last then
                        First_Switches.Set_Last (J - 1);
 
                     else
                        Last := J - 1;
                        while K <= First_Switches.Last loop
                           Last := Last + 1;
                           First_Switches.Table (Last) :=
                             First_Switches.Table (K);
                           K := K + 1;
                        end loop;
 
                        First_Switches.Set_Last (Last);
                     end if;
                  end;
 
                  exit;
               end if;
            end loop;
 
            for J in 1 .. Last_Switches.Last loop
               if Last_Switches.Table (J).all = "-cargs" then
                  declare
                     K    : Positive;
                     Last : Natural;
 
                  begin
                     --  Move the switches that are before -rules when the
                     --  command is CHECK.
 
                     K := J + 1;
                     while K <= Last_Switches.Last
                       and then
                        (The_Command /= Check
                          or else Last_Switches.Table (K).all /= "-rules")
                     loop
                        Add_To_Carg_Switches (Last_Switches.Table (K));
                        K := K + 1;
                     end loop;
 
                     if K > Last_Switches.Last then
                        Last_Switches.Set_Last (J - 1);
 
                     else
                        Last := J - 1;
                        while K <= Last_Switches.Last loop
                           Last := Last + 1;
                           Last_Switches.Table (Last) :=
                             Last_Switches.Table (K);
                           K := K + 1;
                        end loop;
 
                        Last_Switches.Set_Last (Last);
                     end if;
                  end;
 
                  exit;
               end if;
            end loop;
 
            declare
               CP_File : constant Path_Name_Type := Configuration_Pragmas_File;
               M_File  : constant Path_Name_Type := Mapping_File;
 
            begin
               if CP_File /= No_Path then
                  if The_Command = Elim then
                     First_Switches.Increment_Last;
                     First_Switches.Table (First_Switches.Last)  :=
                       new String'("-C" & Get_Name_String (CP_File));
 
                  else
                     Add_To_Carg_Switches
                       (new String'("-gnatec=" & Get_Name_String (CP_File)));
                  end if;
               end if;
 
               if M_File /= No_Path then
                  Add_To_Carg_Switches
                    (new String'("-gnatem=" & Get_Name_String (M_File)));
               end if;
 
               --  For gnatcheck, also indicate a global configuration pragmas
               --  file and, if -U is not used, a local one.
 
               if The_Command = Check then
                  declare
                     Pkg  : constant Prj.Package_Id :=
                              Prj.Util.Value_Of
                                (Name        => Name_Builder,
                                 In_Packages => Project.Decl.Packages,
                                 Shared      => Project_Tree.Shared);
 
                     Variable : Variable_Value :=
                                  Prj.Util.Value_Of
                                    (Name                    => No_Name,
                                     Attribute_Or_Array_Name =>
                                       Name_Global_Configuration_Pragmas,
                                     In_Package              => Pkg,
                                     Shared            => Project_Tree.Shared);
 
                  begin
                     if (Variable = Nil_Variable_Value
                          or else Length_Of_Name (Variable.Value) = 0)
                       and then Pkg /= No_Package
                     then
                        Variable :=
                          Prj.Util.Value_Of
                            (Name                    => Name_Ada,
                             Attribute_Or_Array_Name =>
                               Name_Global_Config_File,
                             In_Package              => Pkg,
                             Shared                  => Project_Tree.Shared);
                     end if;
 
                     if Variable /= Nil_Variable_Value
                       and then Length_Of_Name (Variable.Value) /= 0
                     then
                        Add_To_Carg_Switches
                          (new String'
                             ("-gnatec=" & Get_Name_String (Variable.Value)));
                     end if;
                  end;
 
                  if not All_Projects then
                     declare
                        Pkg : constant Prj.Package_Id :=
                                Prj.Util.Value_Of
                                  (Name        => Name_Compiler,
                                   In_Packages => Project.Decl.Packages,
                                   Shared      => Project_Tree.Shared);
 
                        Variable : Variable_Value :=
                                     Prj.Util.Value_Of
                                       (Name        => No_Name,
                                        Attribute_Or_Array_Name =>
                                          Name_Local_Configuration_Pragmas,
                                        In_Package  => Pkg,
                                        Shared      => Project_Tree.Shared);
 
                     begin
                        if (Variable = Nil_Variable_Value
                             or else Length_Of_Name (Variable.Value) = 0)
                          and then Pkg /= No_Package
                        then
                           Variable :=
                             Prj.Util.Value_Of
                               (Name                    => Name_Ada,
                                Attribute_Or_Array_Name =>
                                  Name_Local_Config_File,
                                In_Package              => Pkg,
                                Shared                  =>
                                  Project_Tree.Shared);
                        end if;
 
                        if Variable /= Nil_Variable_Value
                          and then Length_Of_Name (Variable.Value) /= 0
                        then
                           Add_To_Carg_Switches
                             (new String'
                                ("-gnatec=" &
                                 Get_Name_String (Variable.Value)));
                        end if;
                     end;
                  end if;
               end if;
            end;
         end if;
 
         if The_Command = Link then
            Process_Link;
         end if;
 
         if The_Command = Link or else The_Command = Bind then
 
            --  For files that are specified as relative paths with directory
            --  information, we convert them to absolute paths, with parent
            --  being the current working directory if specified on the command
            --  line and the project directory if specified in the project
            --  file. This is what gnatmake is doing for linker and binder
            --  arguments.
 
            for J in 1 .. Last_Switches.Last loop
               GNATCmd.Test_If_Relative_Path
                 (Last_Switches.Table (J), Current_Work_Dir);
            end loop;
 
            Get_Name_String (Project.Directory.Name);
 
            declare
               Project_Dir : constant String := Name_Buffer (1 .. Name_Len);
            begin
               for J in 1 .. First_Switches.Last loop
                  GNATCmd.Test_If_Relative_Path
                    (First_Switches.Table (J), Project_Dir);
               end loop;
            end;
 
         elsif The_Command = Stub then
            declare
               File_Index : Integer := 0;
               Dir_Index  : Integer := 0;
               Last       : constant Integer := Last_Switches.Last;
               Lang       : constant Language_Ptr :=
                              Get_Language_From_Name (Project, "ada");
 
            begin
               for Index in 1 .. Last loop
                  if Last_Switches.Table (Index)
                    (Last_Switches.Table (Index)'First) /= '-'
                  then
                     File_Index := Index;
                     exit;
                  end if;
               end loop;
 
               --  If the project file naming scheme is not standard, and if
               --  the file name ends with the spec suffix, then indicate to
               --  gnatstub the name of the body file with a -o switch.
 
               if not Is_Standard_GNAT_Naming (Lang.Config.Naming_Data) then
                  if File_Index /= 0 then
                     declare
                        Spec : constant String :=
                                 Base_Name
                                   (Last_Switches.Table (File_Index).all);
                        Last : Natural := Spec'Last;
 
                     begin
                        Get_Name_String (Lang.Config.Naming_Data.Spec_Suffix);
 
                        if Spec'Length > Name_Len
                          and then Spec (Last - Name_Len + 1 .. Last) =
                                                  Name_Buffer (1 .. Name_Len)
                        then
                           Last := Last - Name_Len;
                           Get_Name_String
                             (Lang.Config.Naming_Data.Body_Suffix);
                           Last_Switches.Increment_Last;
                           Last_Switches.Table (Last_Switches.Last) :=
                             new String'("-o");
                           Last_Switches.Increment_Last;
                           Last_Switches.Table (Last_Switches.Last) :=
                             new String'(Spec (Spec'First .. Last) &
                                           Name_Buffer (1 .. Name_Len));
                        end if;
                     end;
                  end if;
               end if;
 
               --  Add the directory of the spec as the destination directory
               --  of the body, if there is no destination directory already
               --  specified.
 
               if File_Index /= 0 then
                  for Index in File_Index + 1 .. Last loop
                     if Last_Switches.Table (Index)
                         (Last_Switches.Table (Index)'First) /= '-'
                     then
                        Dir_Index := Index;
                        exit;
                     end if;
                  end loop;
 
                  if Dir_Index = 0 then
                     Last_Switches.Increment_Last;
                     Last_Switches.Table (Last_Switches.Last) :=
                       new String'
                             (Dir_Name (Last_Switches.Table (File_Index).all));
                  end if;
               end if;
            end;
         end if;
 
         --  For gnatmetric, the generated files should be put in the object
         --  directory. This must be the first switch, because it may be
         --  overridden by a switch in package Metrics in the project file or
         --  by a command line option. Note that we don't add the -d= switch
         --  if there is no object directory available.
 
         if The_Command = Metric
           and then Project.Object_Directory /= No_Path_Information
         then
            First_Switches.Increment_Last;
            First_Switches.Table (2 .. First_Switches.Last) :=
              First_Switches.Table (1 .. First_Switches.Last - 1);
            First_Switches.Table (1) :=
              new String'("-d=" &
                          Get_Name_String (Project.Object_Directory.Name));
         end if;
 
         --  For gnat check, -rules and the following switches need to be the
         --  last options, so move all these switches to table Rules_Switches.
 
         if The_Command = Check then
            declare
               New_Last : Natural;
               --  Set to rank of options preceding "-rules"
 
               In_Rules_Switches : Boolean;
               --  Set to True when options "-rules" is found
 
            begin
               New_Last := First_Switches.Last;
               In_Rules_Switches := False;
 
               for J in 1 .. First_Switches.Last loop
                  if In_Rules_Switches then
                     Add_To_Rules_Switches (First_Switches.Table (J));
 
                  elsif First_Switches.Table (J).all = "-rules" then
                     New_Last := J - 1;
                     In_Rules_Switches := True;
                  end if;
               end loop;
 
               if In_Rules_Switches then
                  First_Switches.Set_Last (New_Last);
               end if;
 
               New_Last := Last_Switches.Last;
               In_Rules_Switches := False;
 
               for J in 1 .. Last_Switches.Last loop
                  if In_Rules_Switches then
                     Add_To_Rules_Switches (Last_Switches.Table (J));
 
                  elsif Last_Switches.Table (J).all = "-rules" then
                     New_Last := J - 1;
                     In_Rules_Switches := True;
                  end if;
               end loop;
 
               if In_Rules_Switches then
                  Last_Switches.Set_Last (New_Last);
               end if;
            end;
         end if;
 
         --  For gnat check, sync, metric or pretty with -U + a main, get the
         --  list of sources from the closure and add them to the arguments.
 
         if ASIS_Main /= null then
            Get_Closure;
 
            --  On VMS, set up the env var again for source dirs file. This is
            --  because the call to gnatmake has set this env var to another
            --  file that has now been deleted.
 
            if Hostparm.OpenVMS then
 
               --  First make sure that the recorded file names are empty
 
               Prj.Env.Initialize (Project_Tree);
 
               Prj.Env.Set_Ada_Paths
                 (Project, Project_Tree, Including_Libraries => False);
            end if;
 
         --  For gnat check, gnat sync, gnat pretty, gnat metric, gnat list,
         --  and gnat stack, if no file has been put on the command line, call
         --  tool with all the sources of the main project.
 
         elsif The_Command = Check  or else
               The_Command = Sync   or else
               The_Command = Pretty or else
               The_Command = Metric or else
               The_Command = List   or else
               The_Command = Stack
         then
            Check_Files;
         end if;
      end if;
 
      --  Gather all the arguments and invoke the executable
 
      declare
         The_Args : Argument_List
                      (1 .. First_Switches.Last +
                            Last_Switches.Last +
                            Carg_Switches.Last +
                            Rules_Switches.Last);
         Arg_Num  : Natural := 0;
 
      begin
         for J in 1 .. First_Switches.Last loop
            Arg_Num := Arg_Num + 1;
            The_Args (Arg_Num) := First_Switches.Table (J);
         end loop;
 
         for J in 1 .. Last_Switches.Last loop
            Arg_Num := Arg_Num + 1;
            The_Args (Arg_Num) := Last_Switches.Table (J);
         end loop;
 
         for J in 1 .. Carg_Switches.Last loop
            Arg_Num := Arg_Num + 1;
            The_Args (Arg_Num) := Carg_Switches.Table (J);
         end loop;
 
         for J in 1 .. Rules_Switches.Last loop
            Arg_Num := Arg_Num + 1;
            The_Args (Arg_Num) := Rules_Switches.Table (J);
         end loop;
 
         --  If Display_Command is on, only display the generated command
 
         if Display_Command then
            Put (Standard_Error, "generated command -->");
            Put (Standard_Error, Exec_Path.all);
 
            for Arg in The_Args'Range loop
               Put (Standard_Error, " ");
               Put (Standard_Error, The_Args (Arg).all);
            end loop;
 
            Put (Standard_Error, "<--");
            New_Line (Standard_Error);
            raise Normal_Exit;
         end if;
 
         if Verbose_Mode then
            Output.Write_Str (Exec_Path.all);
 
            for Arg in The_Args'Range loop
               Output.Write_Char (' ');
               Output.Write_Str (The_Args (Arg).all);
            end loop;
 
            Output.Write_Eol;
         end if;
 
         My_Exit_Status :=
           Exit_Status (Spawn (Exec_Path.all, The_Args));
         raise Normal_Exit;
      end;
   end;
 
exception
   when Error_Exit =>
      if not Keep_Temporary_Files then
         Prj.Delete_All_Temp_Files (Project_Tree.Shared);
         Delete_Temp_Config_Files;
      end if;
 
      Set_Exit_Status (Failure);
 
   when Normal_Exit =>
      if not Keep_Temporary_Files then
         Prj.Delete_All_Temp_Files (Project_Tree.Shared);
         Delete_Temp_Config_Files;
      end if;
 
      --  Since GNATCmd is normally called from DCL (the VMS shell), it must
      --  return an understandable VMS exit status. However the exit status
      --  returned *to* GNATCmd is a Posix style code, so we test it and return
      --  just a simple success or failure on VMS.
 
      if Hostparm.OpenVMS and then My_Exit_Status /= Success then
         Set_Exit_Status (Failure);
      else
         Set_Exit_Status (My_Exit_Status);
      end if;
end GNATCmd;
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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [gnatcmd.adb] - Blame information for rev 749

Line No.	Rev	Author	Line
1	706	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT COMPILER COMPONENTS --`
4			`-- --`
5			`-- G N A T C M D --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 1996-2012, 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 GNAT.Directory_Operations; use GNAT.Directory_Operations;`
27
28			`with Csets;`
29			`with Hostparm; use Hostparm;`
30			`with Makeutl; use Makeutl;`
31			`with MLib.Tgt; use MLib.Tgt;`
32			`with MLib.Utl;`
33			`with MLib.Fil;`
34			`with Namet; use Namet;`
35			`with Opt; use Opt;`
36			`with Osint; use Osint;`
37			`with Output; use Output;`
38			`with Prj; use Prj;`
39			`with Prj.Env;`
40			`with Prj.Ext; use Prj.Ext;`