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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- G N A T L I N K --
+-- --
+-- 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. --
+-- --
+------------------------------------------------------------------------------
+
+-- Gnatlink usage: please consult the gnat documentation
+
+with ALI; use ALI;
+with Csets;
+with Gnatvsn; use Gnatvsn;
+with Hostparm;
+with Indepsw; use Indepsw;
+with Namet; use Namet;
+with Opt;
+with Osint; use Osint;
+with Output; use Output;
+with Snames;
+with Switch; use Switch;
+with System; use System;
+with Table;
+with Targparm; use Targparm;
+with Types;
+
+with Ada.Command_Line; use Ada.Command_Line;
+with Ada.Exceptions; use Ada.Exceptions;
+
+with System.OS_Lib; use System.OS_Lib;
+with System.CRTL;
+
+with Interfaces.C_Streams; use Interfaces.C_Streams;
+with Interfaces.C.Strings; use Interfaces.C.Strings;
+
+procedure Gnatlink is
+ pragma Ident (Gnatvsn.Gnat_Static_Version_String);
+
+ Shared_Libgcc_String : constant String := "-shared-libgcc";
+ Shared_Libgcc : constant String_Access :=
+ new String'(Shared_Libgcc_String);
+ -- Used to invoke gcc when the binder is invoked with -shared
+
+ Static_Libgcc_String : constant String := "-static-libgcc";
+ Static_Libgcc : constant String_Access :=
+ new String'(Static_Libgcc_String);
+ -- Used to invoke gcc when shared libs are not used
+
+ package Gcc_Linker_Options 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 => "Gnatlink.Gcc_Linker_Options");
+ -- Comments needed ???
+
+ package Libpath is new Table.Table (
+ Table_Component_Type => Character,
+ Table_Index_Type => Integer,
+ Table_Low_Bound => 1,
+ Table_Initial => 4096,
+ Table_Increment => 100,
+ Table_Name => "Gnatlink.Libpath");
+ -- Comments needed ???
+
+ package Linker_Options 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 => "Gnatlink.Linker_Options");
+ -- Comments needed ???
+
+ package Linker_Objects 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 => "Gnatlink.Linker_Objects");
+ -- This table collects the objects file to be passed to the linker. In the
+ -- case where the linker command line is too long then programs objects
+ -- are put on the Response_File_Objects table. Note that the binder object
+ -- file and the user's objects remain in this table. This is very
+ -- important because on the GNU linker command line the -L switch is not
+ -- used to look for objects files but -L switch is used to look for
+ -- objects listed in the response file. This is not a problem with the
+ -- applications objects as they are specified with a full name.
+
+ package Response_File_Objects 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 => "Gnatlink.Response_File_Objects");
+ -- This table collects the objects file that are to be put in the response
+ -- file. Only application objects are collected there (see details in
+ -- Linker_Objects table comments)
+
+ package Binder_Options_From_ALI is new Table.Table (
+ Table_Component_Type => String_Access,
+ Table_Index_Type => Integer,
+ Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
+ Table_Initial => 20,
+ Table_Increment => 100,
+ Table_Name => "Gnatlink.Binder_Options_From_ALI");
+ -- This table collects the switches from the ALI file of the main
+ -- subprogram.
+
+ package Binder_Options is new Table.Table (
+ Table_Component_Type => String_Access,
+ Table_Index_Type => Integer,
+ Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
+ Table_Initial => 20,
+ Table_Increment => 100,
+ Table_Name => "Gnatlink.Binder_Options");
+ -- This table collects the arguments to be passed to compile the binder
+ -- generated file.
+
+ Gcc : String_Access := Program_Name ("gcc", "gnatlink");
+
+ Read_Mode : constant String := "r" & ASCII.NUL;
+
+ Begin_Info : constant String := "-- BEGIN Object file/option list";
+ End_Info : constant String := "-- END Object file/option list ";
+
+ Gcc_Path : String_Access;
+ Linker_Path : String_Access;
+ Output_File_Name : String_Access;
+ Ali_File_Name : String_Access;
+ Binder_Spec_Src_File : String_Access;
+ Binder_Body_Src_File : String_Access;
+ Binder_Ali_File : String_Access;
+ Binder_Obj_File : String_Access;
+
+ Tname : Temp_File_Name;
+ Tname_FD : File_Descriptor := Invalid_FD;
+ -- Temporary file used by linker to pass list of object files on
+ -- certain systems with limitations on size of arguments.
+
+ Debug_Flag_Present : Boolean := False;
+ Verbose_Mode : Boolean := False;
+ Very_Verbose_Mode : Boolean := False;
+
+ Standard_Gcc : Boolean := True;
+
+ Compile_Bind_File : Boolean := True;
+ -- Set to False if bind file is not to be compiled
+
+ Create_Map_File : Boolean := False;
+ -- Set to True by switch -M. The map file name is derived from
+ -- the ALI file name (mainprog.ali => mainprog.map).
+
+ Object_List_File_Supported : Boolean;
+ for Object_List_File_Supported'Size use Character'Size;
+ pragma Import
+ (C, Object_List_File_Supported, "__gnat_objlist_file_supported");
+ -- Predicate indicating whether the linker has an option whereby the
+ -- names of object files can be passed to the linker in a file.
+
+ Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr;
+ pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option");
+ -- Pointer to a string representing the linker option which specifies
+ -- the response file.
+
+ Object_File_Option : constant String := Value (Object_File_Option_Ptr);
+ -- The linker option which specifies the response file as a string
+
+ Using_GNU_response_file : constant Boolean :=
+ Object_File_Option'Length > 0
+ and then Object_File_Option (Object_File_Option'Last) = '@';
+ -- Whether a GNU response file is used
+
+ Object_List_File_Required : Boolean := False;
+ -- Set to True to force generation of a response file
+
+ Shared_Libgcc_Default : Character;
+ for Shared_Libgcc_Default'Size use Character'Size;
+ pragma Import
+ (C, Shared_Libgcc_Default, "__gnat_shared_libgcc_default");
+ -- Indicates wether libgcc should be statically linked (use 'T') or
+ -- dynamically linked (use 'H') by default.
+
+ function Base_Name (File_Name : String) return String;
+ -- Return just the file name part without the extension (if present)
+
+ procedure Check_Existing_Executable (File_Name : String);
+ -- Delete any existing executable to avoid accidentally updating the target
+ -- of a symbolic link, but produce a Fatail_Error if File_Name matches any
+ -- of the source file names. This avoids overwriting of extensionless
+ -- source files by accident on systems where executables do not have
+ -- extensions.
+
+ procedure Delete (Name : String);
+ -- Wrapper to unlink as status is ignored by this application
+
+ procedure Error_Msg (Message : String);
+ -- Output the error or warning Message
+
+ procedure Exit_With_Error (Error : String);
+ -- Output Error and exit program with a fatal condition
+
+ procedure Process_Args;
+ -- Go through all the arguments and build option tables
+
+ procedure Process_Binder_File (Name : String);
+ -- Reads the binder file and extracts linker arguments
+
+ procedure Usage;
+ -- Display usage
+
+ procedure Write_Header;
+ -- Show user the program name, version and copyright
+
+ procedure Write_Usage;
+ -- Show user the program options
+
+ ---------------
+ -- Base_Name --
+ ---------------
+
+ function Base_Name (File_Name : String) return String is
+ Findex1 : Natural;
+ Findex2 : Natural;
+
+ begin
+ Findex1 := File_Name'First;
+
+ -- The file might be specified by a full path name. However,
+ -- we want the path to be stripped away.
+
+ for J in reverse File_Name'Range loop
+ if Is_Directory_Separator (File_Name (J)) then
+ Findex1 := J + 1;
+ exit;
+ end if;
+ end loop;
+
+ Findex2 := File_Name'Last;
+ while Findex2 > Findex1
+ and then File_Name (Findex2) /= '.'
+ loop
+ Findex2 := Findex2 - 1;
+ end loop;
+
+ if Findex2 = Findex1 then
+ Findex2 := File_Name'Last + 1;
+ end if;
+
+ return File_Name (Findex1 .. Findex2 - 1);
+ end Base_Name;
+
+ -------------------------------
+ -- Check_Existing_Executable --
+ -------------------------------
+
+ procedure Check_Existing_Executable (File_Name : String) is
+ Ename : String := File_Name;
+ Efile : File_Name_Type;
+ Sfile : File_Name_Type;
+
+ begin
+ Canonical_Case_File_Name (Ename);
+ Name_Len := 0;
+ Add_Str_To_Name_Buffer (Ename);
+ Efile := Name_Find;
+
+ for J in Units.Table'First .. Units.Last loop
+ Sfile := Units.Table (J).Sfile;
+ if Sfile = Efile then
+ Exit_With_Error ("executable name """ & File_Name & """ matches "
+ & "source file name """ & Get_Name_String (Sfile) & """");
+ end if;
+ end loop;
+
+ Delete (File_Name);
+ end Check_Existing_Executable;
+
+ ------------
+ -- Delete --
+ ------------
+
+ procedure Delete (Name : String) is
+ Status : int;
+ pragma Unreferenced (Status);
+ begin
+ Status := unlink (Name'Address);
+ -- Is it really right to ignore an error here ???
+ end Delete;
+
+ ---------------
+ -- Error_Msg --
+ ---------------
+
+ procedure Error_Msg (Message : String) is
+ begin
+ Write_Str (Base_Name (Command_Name));
+ Write_Str (": ");
+ Write_Str (Message);
+ Write_Eol;
+ end Error_Msg;
+
+ ---------------------
+ -- Exit_With_Error --
+ ---------------------
+
+ procedure Exit_With_Error (Error : String) is
+ begin
+ Error_Msg (Error);
+ Exit_Program (E_Fatal);
+ end Exit_With_Error;
+
+ ------------------
+ -- Process_Args --
+ ------------------
+
+ procedure Process_Args is
+ Next_Arg : Integer;
+ Skip_Next : Boolean := False;
+ -- Set to true if the next argument is to be added into the list of
+ -- linker's argument without parsing it.
+
+ procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
+
+ -- Start of processing for Process_Args
+
+ begin
+ -- First, check for --version and --help
+
+ Check_Version_And_Help ("GNATLINK", "1995");
+
+ -- Loop through arguments of gnatlink command
+
+ Next_Arg := 1;
+ loop
+ exit when Next_Arg > Argument_Count;
+
+ Process_One_Arg : declare
+ Arg : constant String := Argument (Next_Arg);
+
+ begin
+ -- Case of argument which is a switch
+
+ -- We definitely need section by section comments here ???
+
+ if Skip_Next then
+
+ -- This argument must not be parsed, just add it to the
+ -- list of linker's options.
+
+ Skip_Next := False;
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ elsif Arg'Length /= 0 and then Arg (1) = '-' then
+ if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
+ Exit_With_Error
+ ("invalid switch: """ & Arg & """ (gnat not needed here)");
+ end if;
+
+ if Arg = "-Xlinker" then
+
+ -- Next argument should be sent directly to the linker.
+ -- We do not want to parse it here.
+
+ Skip_Next := True;
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ elsif Arg (2) = 'g'
+ and then (Arg'Length < 5 or else Arg (2 .. 5) /= "gnat")
+ then
+ Debug_Flag_Present := True;
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ Linker_Options.Table (Linker_Options.Last);
+
+ elsif Arg'Length >= 3 and then Arg (2) = 'M' then
+ declare
+ Switches : String_List_Access;
+
+ begin
+ Convert (Map_File, Arg (3 .. Arg'Last), Switches);
+
+ if Switches /= null then
+ for J in Switches'Range loop
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ Switches (J);
+ end loop;
+ end if;
+ end;
+
+ elsif Arg'Length = 2 then
+ case Arg (2) is
+ when 'b' =>
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ Linker_Options.Table (Linker_Options.Last);
+
+ Next_Arg := Next_Arg + 1;
+
+ if Next_Arg > Argument_Count then
+ Exit_With_Error ("Missing argument for -b");
+ end if;
+
+ Get_Machine_Name : declare
+ Name_Arg : constant String_Access :=
+ new String'(Argument (Next_Arg));
+
+ begin
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ Name_Arg;
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ Name_Arg;
+
+ end Get_Machine_Name;
+
+ when 'f' =>
+ if Object_List_File_Supported then
+ Object_List_File_Required := True;
+ else
+ Exit_With_Error
+ ("Object list file not supported on this target");
+ end if;
+
+ when 'M' =>
+ Create_Map_File := True;
+
+ when 'n' =>
+ Compile_Bind_File := False;
+
+ when 'o' =>
+ Next_Arg := Next_Arg + 1;
+
+ if Next_Arg > Argument_Count then
+ Exit_With_Error ("Missing argument for -o");
+ end if;
+
+ Output_File_Name :=
+ new String'(Executable_Name
+ (Argument (Next_Arg),
+ Only_If_No_Suffix => True));
+
+ when 'P' =>
+ Opt.CodePeer_Mode := True;
+
+ when 'R' =>
+ Opt.Run_Path_Option := False;
+
+ when 'v' =>
+
+ -- Support "double" verbose mode. Second -v
+ -- gets sent to the linker and binder phases.
+
+ if Verbose_Mode then
+ Very_Verbose_Mode := True;
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ Linker_Options.Table (Linker_Options.Last);
+
+ else
+ Verbose_Mode := True;
+
+ end if;
+
+ when others =>
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ end case;
+
+ elsif Arg (2) = 'B' then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ Linker_Options.Table (Linker_Options.Last);
+
+ elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
+ if Arg'Length = 7 then
+ Exit_With_Error ("Missing argument for --LINK=");
+ end if;
+
+ Linker_Path :=
+ System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last));
+
+ if Linker_Path = null then
+ Exit_With_Error
+ ("Could not locate linker: " & Arg (8 .. Arg'Last));
+ end if;
+
+ elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
+ declare
+ Program_Args : constant Argument_List_Access :=
+ Argument_String_To_List
+ (Arg (7 .. Arg'Last));
+
+ begin
+ if Program_Args.all (1).all /= Gcc.all then
+ Gcc := new String'(Program_Args.all (1).all);
+ Standard_Gcc := False;
+ end if;
+
+ -- Set appropriate flags for switches passed
+
+ for J in 2 .. Program_Args.all'Last loop
+ declare
+ Arg : constant String := Program_Args.all (J).all;
+ AF : constant Integer := Arg'First;
+
+ begin
+ if Arg'Length /= 0 and then Arg (AF) = '-' then
+ if Arg (AF + 1) = 'g'
+ and then (Arg'Length = 2
+ or else Arg (AF + 2) in '0' .. '3'
+ or else Arg (AF + 2 .. Arg'Last) = "coff")
+ then
+ Debug_Flag_Present := True;
+ end if;
+ end if;
+
+ -- Add directory to source search dirs so that
+ -- Get_Target_Parameters can find system.ads
+
+ if Arg (AF .. AF + 1) = "-I"
+ and then Arg'Length > 2
+ then
+ Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
+ end if;
+
+ -- Pass to gcc for compiling binder generated file
+ -- No use passing libraries, it will just generate
+ -- a warning
+
+ if not (Arg (AF .. AF + 1) = "-l"
+ or else Arg (AF .. AF + 1) = "-L")
+ then
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) :=
+ new String'(Arg);
+ end if;
+
+ -- Pass to gcc for linking program
+
+ Gcc_Linker_Options.Increment_Last;
+ Gcc_Linker_Options.Table
+ (Gcc_Linker_Options.Last) := new String'(Arg);
+ end;
+ end loop;
+ end;
+
+ -- Send all multi-character switches not recognized as
+ -- a special case by gnatlink to the linker/loader stage.
+
+ else
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+ end if;
+
+ -- Here if argument is a file name rather than a switch
+
+ else
+ -- If explicit ali file, capture it
+
+ if Arg'Length > 4
+ and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
+ then
+ if Ali_File_Name = null then
+ Ali_File_Name := new String'(Arg);
+ else
+ Exit_With_Error ("cannot handle more than one ALI file");
+ end if;
+
+ -- If target object file, record object file
+
+ elsif Arg'Length > Get_Target_Object_Suffix.all'Length
+ and then Arg
+ (Arg'Last -
+ Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
+ = Get_Target_Object_Suffix.all
+ then
+ Linker_Objects.Increment_Last;
+ Linker_Objects.Table (Linker_Objects.Last) :=
+ new String'(Arg);
+
+ -- If host object file, record object file
+ -- e.g. accept foo.o as well as foo.obj on VMS target
+
+ elsif Arg'Length > Get_Object_Suffix.all'Length
+ and then Arg
+ (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
+ = Get_Object_Suffix.all
+ then
+ Linker_Objects.Increment_Last;
+ Linker_Objects.Table (Linker_Objects.Last) :=
+ new String'(Arg);
+
+ -- If corresponding ali file exists, capture it
+
+ elsif Ali_File_Name = null
+ and then Is_Regular_File (Arg & ".ali")
+ then
+ Ali_File_Name := new String'(Arg & ".ali");
+
+ -- Otherwise assume this is a linker options entry, but
+ -- see below for interesting adjustment to this assumption.
+
+ else
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Arg);
+ end if;
+ end if;
+ end Process_One_Arg;
+
+ Next_Arg := Next_Arg + 1;
+ end loop;
+
+ -- Compile the bind file with warnings suppressed, because
+ -- otherwise the with of the main program may cause junk warnings.
+
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
+
+ -- If we did not get an ali file at all, and we had at least one
+ -- linker option, then assume that was the intended ali file after
+ -- all, so that we get a nicer message later on.
+
+ if Ali_File_Name = null
+ and then Linker_Options.Last >= Linker_Options.First
+ then
+ Ali_File_Name :=
+ new String'(Linker_Options.Table (Linker_Options.First).all &
+ ".ali");
+ end if;
+ end Process_Args;
+
+ -------------------------
+ -- Process_Binder_File --
+ -------------------------
+
+ procedure Process_Binder_File (Name : String) is
+ Fd : FILEs;
+ -- Binder file's descriptor
+
+ Link_Bytes : Integer := 0;
+ -- Projected number of bytes for the linker command line
+
+ Link_Max : Integer;
+ pragma Import (C, Link_Max, "__gnat_link_max");
+ -- Maximum number of bytes on the command line supported by the OS
+ -- linker. Passed this limit the response file mechanism must be used
+ -- if supported.
+
+ Next_Line : String (1 .. 1000);
+ -- Current line value
+
+ Nlast : Integer;
+ Nfirst : Integer;
+ -- Current line slice (the slice does not contain line terminator)
+
+ Last : Integer;
+ -- Current line last character for shared libraries (without version)
+
+ Objs_Begin : Integer := 0;
+ -- First object file index in Linker_Objects table
+
+ Objs_End : Integer := 0;
+ -- Last object file index in Linker_Objects table
+
+ Status : int;
+ pragma Warnings (Off, Status);
+ -- Used for various Interfaces.C_Streams calls
+
+ Closing_Status : Boolean;
+ pragma Warnings (Off, Closing_Status);
+ -- For call to Close
+
+ GNAT_Static : Boolean := False;
+ -- Save state of -static option
+
+ GNAT_Shared : Boolean := False;
+ -- Save state of -shared option
+
+ Xlinker_Was_Previous : Boolean := False;
+ -- Indicate that "-Xlinker" was the option preceding the current
+ -- option. If True, then the current option is never suppressed.
+
+ -- Rollback data
+
+ -- These data items are used to store current binder file context.
+ -- The context is composed of the file descriptor position and the
+ -- current line together with the slice indexes (first and last
+ -- position) for this line. The rollback data are used by the
+ -- Store_File_Context and Rollback_File_Context routines below.
+ -- The file context mechanism interact only with the Get_Next_Line
+ -- call. For example:
+
+ -- Store_File_Context;
+ -- Get_Next_Line;
+ -- Rollback_File_Context;
+ -- Get_Next_Line;
+
+ -- Both Get_Next_Line calls above will read the exact same data from
+ -- the file. In other words, Next_Line, Nfirst and Nlast variables
+ -- will be set with the exact same values.
+
+ RB_File_Pos : long; -- File position
+ RB_Next_Line : String (1 .. 1000); -- Current line content
+ RB_Nlast : Integer; -- Slice last index
+ RB_Nfirst : Integer; -- Slice first index
+
+ Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr;
+ pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option");
+ -- Pointer to string representing the native linker option which
+ -- specifies the path where the dynamic loader should find shared
+ -- libraries. Equal to null string if this system doesn't support it.
+
+ Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr;
+ pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir");
+ -- Pointer to string indicating the installation subdirectory where
+ -- a default shared libgcc might be found.
+
+ Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
+ pragma Import
+ (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension");
+ -- Pointer to string specifying the default extension for
+ -- object libraries, e.g. Unix uses ".a", VMS uses ".olb".
+
+ Separate_Run_Path_Options : Boolean;
+ for Separate_Run_Path_Options'Size use Character'Size;
+ pragma Import
+ (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
+ -- Whether separate rpath options should be emitted for each directory
+
+ procedure Get_Next_Line;
+ -- Read the next line from the binder file without the line
+ -- terminator.
+
+ function Index (S, Pattern : String) return Natural;
+ -- Return the last occurrence of Pattern in S, or 0 if none
+
+ function Is_Option_Present (Opt : String) return Boolean;
+ -- Return true if the option Opt is already present in
+ -- Linker_Options table.
+
+ procedure Store_File_Context;
+ -- Store current file context, Fd position and current line data.
+ -- The file context is stored into the rollback data above (RB_*).
+ -- Store_File_Context can be called at any time, only the last call
+ -- will be used (i.e. this routine overwrites the file context).
+
+ procedure Rollback_File_Context;
+ -- Restore file context from rollback data. This routine must be called
+ -- after Store_File_Context. The binder file context will be restored
+ -- with the data stored by the last Store_File_Context call.
+
+ procedure Write_RF (S : String);
+ -- Write a string to the response file and check if it was successful.
+ -- Fail the program if it was not successful (disk full).
+
+ -------------------
+ -- Get_Next_Line --
+ -------------------
+
+ procedure Get_Next_Line is
+ Fchars : chars;
+
+ begin
+ Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
+
+ if Fchars = System.Null_Address then
+ Exit_With_Error ("Error reading binder output");
+ end if;
+
+ Nfirst := Next_Line'First;
+ Nlast := Nfirst;
+ while Nlast <= Next_Line'Last
+ and then Next_Line (Nlast) /= ASCII.LF
+ and then Next_Line (Nlast) /= ASCII.CR
+ loop
+ Nlast := Nlast + 1;
+ end loop;
+
+ Nlast := Nlast - 1;
+ end Get_Next_Line;
+
+ -----------
+ -- Index --
+ -----------
+
+ function Index (S, Pattern : String) return Natural is
+ Len : constant Natural := Pattern'Length;
+
+ begin
+ for J in reverse S'First .. S'Last - Len + 1 loop
+ if Pattern = S (J .. J + Len - 1) then
+ return J;
+ end if;
+ end loop;
+
+ return 0;
+ end Index;
+
+ -----------------------
+ -- Is_Option_Present --
+ -----------------------
+
+ function Is_Option_Present (Opt : String) return Boolean is
+ begin
+ for I in 1 .. Linker_Options.Last loop
+
+ if Linker_Options.Table (I).all = Opt then
+ return True;
+ end if;
+
+ end loop;
+
+ return False;
+ end Is_Option_Present;
+
+ ---------------------------
+ -- Rollback_File_Context --
+ ---------------------------
+
+ procedure Rollback_File_Context is
+ begin
+ Next_Line := RB_Next_Line;
+ Nfirst := RB_Nfirst;
+ Nlast := RB_Nlast;
+ Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
+
+ if Status = -1 then
+ Exit_With_Error ("Error setting file position");
+ end if;
+ end Rollback_File_Context;
+
+ ------------------------
+ -- Store_File_Context --
+ ------------------------
+
+ procedure Store_File_Context is
+ use type System.CRTL.long;
+ begin
+ RB_Next_Line := Next_Line;
+ RB_Nfirst := Nfirst;
+ RB_Nlast := Nlast;
+ RB_File_Pos := ftell (Fd);
+
+ if RB_File_Pos = -1 then
+ Exit_With_Error ("Error getting file position");
+ end if;
+ end Store_File_Context;
+
+ --------------
+ -- Write_RF --
+ --------------
+
+ procedure Write_RF (S : String) is
+ Success : Boolean := True;
+ begin
+ -- If a GNU response file is used, space and backslash need to be
+ -- escaped because they are interpreted as a string separator and
+ -- an escape character respectively by the underlying mechanism.
+ -- On the other hand, quote and double-quote are not escaped since
+ -- they are interpreted as string delimiters on both sides.
+
+ if Using_GNU_response_file then
+ for I in S'Range loop
+ if S (I) = ' ' or else S (I) = '\' then
+ if Write (Tname_FD, ASCII.BACK_SLASH'Address, 1) /= 1 then
+ Success := False;
+ end if;
+ end if;
+
+ if Write (Tname_FD, S (I)'Address, 1) /= 1 then
+ Success := False;
+ end if;
+ end loop;
+ else
+ if Write (Tname_FD, S'Address, S'Length) /= S'Length then
+ Success := False;
+ end if;
+ end if;
+
+ if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
+ Success := False;
+ end if;
+
+ if not Success then
+ Exit_With_Error ("Error generating response file: disk full");
+ end if;
+ end Write_RF;
+
+ -- Start of processing for Process_Binder_File
+
+ begin
+ Fd := fopen (Name'Address, Read_Mode'Address);
+
+ if Fd = NULL_Stream then
+ Exit_With_Error ("Failed to open binder output");
+ end if;
+
+ -- Skip up to the Begin Info line
+
+ loop
+ Get_Next_Line;
+ exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
+ end loop;
+
+ loop
+ Get_Next_Line;
+
+ -- Go to end when end line is reached (this will happen in
+ -- High_Integrity_Mode where no -L switches are generated)
+
+ exit when Next_Line (Nfirst .. Nlast) = End_Info;
+
+ Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
+ Nlast := Nlast - 8;
+
+ -- Go to next section when switches are reached
+
+ exit when Next_Line (1) = '-';
+
+ -- Otherwise we have another object file to collect
+
+ Linker_Objects.Increment_Last;
+
+ -- Mark the positions of first and last object files in case
+ -- they need to be placed with a named file on systems having
+ -- linker line limitations.
+
+ if Objs_Begin = 0 then
+ Objs_Begin := Linker_Objects.Last;
+ end if;
+
+ Linker_Objects.Table (Linker_Objects.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+
+ Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
+ -- Nlast - Nfirst + 1, for the size, plus one for the space between
+ -- each arguments.
+ end loop;
+
+ Objs_End := Linker_Objects.Last;
+
+ -- Continue to compute the Link_Bytes, the linker options are part of
+ -- command line length.
+
+ Store_File_Context;
+
+ while Next_Line (Nfirst .. Nlast) /= End_Info loop
+ Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
+ Get_Next_Line;
+ end loop;
+
+ Rollback_File_Context;
+
+ -- On systems that have limitations on handling very long linker lines
+ -- we make use of the system linker option which takes a list of object
+ -- file names from a file instead of the command line itself. What we do
+ -- is to replace the list of object files by the special linker option
+ -- which then reads the object file list from a file instead. The option
+ -- to read from a file instead of the command line is only triggered if
+ -- a conservative threshold is passed.
+
+ if Object_List_File_Required
+ or else (Object_List_File_Supported
+ and then Link_Bytes > Link_Max)
+ then
+ -- Create a temporary file containing the Ada user object files
+ -- needed by the link. This list is taken from the bind file
+ -- and is output one object per line for maximal compatibility with
+ -- linkers supporting this option.
+
+ Create_Temp_File (Tname_FD, Tname);
+
+ -- ??? File descriptor should be checked to not be Invalid_FD.
+ -- ??? Status of Write and Close operations should be checked, and
+ -- failure should occur if a status is wrong.
+
+ for J in Objs_Begin .. Objs_End loop
+ Write_RF (Linker_Objects.Table (J).all);
+
+ Response_File_Objects.Increment_Last;
+ Response_File_Objects.Table (Response_File_Objects.Last) :=
+ Linker_Objects.Table (J);
+ end loop;
+
+ Close (Tname_FD, Closing_Status);
+
+ -- Add the special objects list file option together with the name
+ -- of the temporary file (removing the null character) to the objects
+ -- file table.
+
+ Linker_Objects.Table (Objs_Begin) :=
+ new String'(Object_File_Option &
+ Tname (Tname'First .. Tname'Last - 1));
+
+ -- The slots containing these object file names are then removed
+ -- from the objects table so they do not appear in the link. They
+ -- are removed by moving up the linker options and non-Ada object
+ -- files appearing after the Ada object list in the table.
+
+ declare
+ N : Integer;
+
+ begin
+ N := Objs_End - Objs_Begin + 1;
+
+ for J in Objs_End + 1 .. Linker_Objects.Last loop
+ Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
+ end loop;
+
+ Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
+ end;
+ end if;
+
+ -- Process switches and options
+
+ if Next_Line (Nfirst .. Nlast) /= End_Info then
+ Xlinker_Was_Previous := False;
+
+ loop
+ if Xlinker_Was_Previous
+ or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
+ then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+
+ elsif Next_Line (Nfirst .. Nlast) = "-static" then
+ GNAT_Static := True;
+
+ elsif Next_Line (Nfirst .. Nlast) = "-shared" then
+ GNAT_Shared := True;
+
+ -- Add binder options only if not already set on the command
+ -- line. This rule is a way to control the linker options order.
+
+ -- The following test needs comments, why is it VMS specific.
+ -- The above comment looks out of date ???
+
+ elsif not (OpenVMS_On_Target
+ and then
+ Is_Option_Present (Next_Line (Nfirst .. Nlast)))
+ then
+ if Nlast > Nfirst + 2 and then
+ Next_Line (Nfirst .. Nfirst + 1) = "-L"
+ then
+ -- Construct a library search path for use later
+ -- to locate static gnatlib libraries.
+
+ if Libpath.Last > 1 then
+ Libpath.Increment_Last;
+ Libpath.Table (Libpath.Last) := Path_Separator;
+ end if;
+
+ for I in Nfirst + 2 .. Nlast loop
+ Libpath.Increment_Last;
+ Libpath.Table (Libpath.Last) := Next_Line (I);
+ end loop;
+
+ Linker_Options.Increment_Last;
+
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+
+ elsif Next_Line (Nfirst .. Nlast) = "-ldecgnat"
+ or else Next_Line (Nfirst .. Nlast) = "-lgnarl"
+ or else Next_Line (Nfirst .. Nlast) = "-lgnat"
+ or else Next_Line
+ (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
+ Shared_Lib ("gnarl")
+ or else Next_Line
+ (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
+ Shared_Lib ("gnat")
+ then
+ -- If it is a shared library, remove the library version.
+ -- We will be looking for the static version of the library
+ -- as it is in the same directory as the shared version.
+
+ if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast)
+ = Library_Version
+ then
+ -- Set Last to point to last character before the
+ -- library version.
+
+ Last := Nlast - Library_Version'Length - 1;
+ else
+ Last := Nlast;
+ end if;
+
+ -- Given a Gnat standard library, search the library path to
+ -- find the library location.
+
+ -- Shouldn't we abstract a proc here, we are getting awfully
+ -- heavily nested ???
+
+ declare
+ File_Path : String_Access;
+
+ Object_Lib_Extension : constant String :=
+ Value (Object_Library_Ext_Ptr);
+
+ File_Name : constant String := "lib" &
+ Next_Line (Nfirst + 2 .. Last) &
+ Object_Lib_Extension;
+
+ Run_Path_Opt : constant String :=
+ Value (Run_Path_Option_Ptr);
+
+ GCC_Index : Natural;
+ Run_Path_Opt_Index : Natural := 0;
+
+ begin
+ File_Path :=
+ Locate_Regular_File (File_Name,
+ String (Libpath.Table (1 .. Libpath.Last)));
+
+ if File_Path /= null then
+ if GNAT_Static then
+
+ -- If static gnatlib found, explicitly
+ -- specify to overcome possible linker
+ -- default usage of shared version.
+
+ Linker_Options.Increment_Last;
+
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(File_Path.all);
+
+ elsif GNAT_Shared then
+ if Opt.Run_Path_Option then
+
+ -- If shared gnatlib desired, add the
+ -- appropriate system specific switch
+ -- so that it can be located at runtime.
+
+ if Run_Path_Opt'Length /= 0 then
+
+ -- Output the system specific linker command
+ -- that allows the image activator to find
+ -- the shared library at runtime. Also add
+ -- path to find libgcc_s.so, if relevant.
+
+ declare
+ Path : String (1 .. File_Path'Length + 15);
+ Path_Last : constant Natural :=
+ File_Path'Length;
+
+ begin
+ Path (1 .. File_Path'Length) :=
+ File_Path.all;
+
+ -- To find the location of the shared version
+ -- of libgcc, we look for "gcc-lib" in the
+ -- path of the library. However, this
+ -- subdirectory is no longer present in
+ -- recent versions of GCC. So, we look for
+ -- the last subdirectory "lib" in the path.
+
+ GCC_Index :=
+ Index (Path (1 .. Path_Last), "gcc-lib");
+
+ if GCC_Index /= 0 then
+
+ -- The shared version of libgcc is
+ -- located in the parent directory.
+
+ GCC_Index := GCC_Index - 1;
+
+ else
+ GCC_Index :=
+ Index
+ (Path (1 .. Path_Last),
+ "/lib/");
+
+ if GCC_Index = 0 then
+ GCC_Index :=
+ Index (Path (1 .. Path_Last),
+ Directory_Separator &
+ "lib" &
+ Directory_Separator);
+ end if;
+
+ -- If we have found a "lib" subdir in
+ -- the path to libgnat, the possible
+ -- shared libgcc of interest by default
+ -- is in libgcc_subdir at the same
+ -- level.
+
+ if GCC_Index /= 0 then
+ declare
+ Subdir : constant String :=
+ Value (Libgcc_Subdir_Ptr);
+ begin
+ Path
+ (GCC_Index + 1 ..
+ GCC_Index + Subdir'Length) :=
+ Subdir;
+ GCC_Index :=
+ GCC_Index + Subdir'Length;
+ end;
+ end if;
+ end if;
+
+ -- Look for an eventual run_path_option in
+ -- the linker switches.
+
+ if Separate_Run_Path_Options then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table
+ (Linker_Options.Last) :=
+ new String'
+ (Run_Path_Opt
+ & File_Path
+ (1 .. File_Path'Length
+ - File_Name'Length));
+
+ if GCC_Index /= 0 then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table
+ (Linker_Options.Last) :=
+ new String'
+ (Run_Path_Opt
+ & Path (1 .. GCC_Index));
+ end if;
+
+ else
+ for J in reverse
+ 1 .. Linker_Options.Last
+ loop
+ if Linker_Options.Table (J) /= null
+ and then
+ Linker_Options.Table (J)'Length
+ > Run_Path_Opt'Length
+ and then
+ Linker_Options.Table (J)
+ (1 .. Run_Path_Opt'Length) =
+ Run_Path_Opt
+ then
+ -- We have found an already
+ -- specified run_path_option: we
+ -- will add to this switch,
+ -- because only one
+ -- run_path_option should be
+ -- specified.
+
+ Run_Path_Opt_Index := J;
+ exit;
+ end if;
+ end loop;
+
+ -- If there is no run_path_option, we
+ -- need to add one.
+
+ if Run_Path_Opt_Index = 0 then
+ Linker_Options.Increment_Last;
+ end if;
+
+ if GCC_Index = 0 then
+ if Run_Path_Opt_Index = 0 then
+ Linker_Options.Table
+ (Linker_Options.Last) :=
+ new String'
+ (Run_Path_Opt
+ & File_Path
+ (1 .. File_Path'Length
+ - File_Name'Length));
+
+ else
+ Linker_Options.Table
+ (Run_Path_Opt_Index) :=
+ new String'
+ (Linker_Options.Table
+ (Run_Path_Opt_Index).all
+ & Path_Separator
+ & File_Path
+ (1 .. File_Path'Length
+ - File_Name'Length));
+ end if;
+
+ else
+ if Run_Path_Opt_Index = 0 then
+ Linker_Options.Table
+ (Linker_Options.Last) :=
+ new String'
+ (Run_Path_Opt
+ & File_Path
+ (1 .. File_Path'Length
+ - File_Name'Length)
+ & Path_Separator
+ & Path (1 .. GCC_Index));
+
+ else
+ Linker_Options.Table
+ (Run_Path_Opt_Index) :=
+ new String'
+ (Linker_Options.Table
+ (Run_Path_Opt_Index).all
+ & Path_Separator
+ & File_Path
+ (1 .. File_Path'Length
+ - File_Name'Length)
+ & Path_Separator
+ & Path (1 .. GCC_Index));
+ end if;
+ end if;
+ end if;
+ end;
+ end if;
+ end if;
+
+ -- Then we add the appropriate -l switch
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+ end if;
+
+ else
+ -- If gnatlib library not found, then
+ -- add it anyway in case some other
+ -- mechanism may find it.
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+ end if;
+ end;
+ else
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
+ end if;
+ end if;
+
+ Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
+
+ Get_Next_Line;
+ exit when Next_Line (Nfirst .. Nlast) = End_Info;
+
+ Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
+ Nlast := Nlast - 8;
+ end loop;
+ end if;
+
+ -- If -shared was specified, invoke gcc with -shared-libgcc
+
+ if GNAT_Shared then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
+ end if;
+
+ Status := fclose (Fd);
+ end Process_Binder_File;
+
+ -----------
+ -- Usage --
+ -----------
+
+ procedure Usage is
+ begin
+ Write_Str ("Usage: ");
+ Write_Str (Base_Name (Command_Name));
+ Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
+ Write_Eol;
+ Write_Eol;
+ Write_Line (" mainprog.ali the ALI file of the main program");
+ Write_Eol;
+ Write_Eol;
+ Display_Usage_Version_And_Help;
+ Write_Line (" -f Force object file list to be generated");
+ Write_Line (" -g Compile binder source file with debug information");
+ Write_Line (" -n Do not compile the binder source file");
+ Write_Line (" -P Process files for use by CodePeer");
+ Write_Line (" -R Do not use a run_path_option");
+ Write_Line (" -v Verbose mode");
+ Write_Line (" -v -v Very verbose mode");
+ Write_Eol;
+ Write_Line (" -o nam Use 'nam' as the name of the executable");
+ Write_Line (" -b target Compile the binder source to run on target");
+ Write_Line (" -Bdir Load compiler executables from dir");
+
+ if Is_Supported (Map_File) then
+ Write_Line (" -Mmap Create map file map");
+ Write_Line (" -M Create map file mainprog.map");
+ end if;
+
+ Write_Line (" --GCC=comp Use comp as the compiler");
+ Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
+ Write_Eol;
+ Write_Line (" [non-Ada-objects] list of non Ada object files");
+ Write_Line (" [linker-options] other options for the linker");
+ end Usage;
+
+ ------------------
+ -- Write_Header --
+ ------------------
+
+ procedure Write_Header is
+ begin
+ if Verbose_Mode then
+ Write_Eol;
+ Display_Version ("GNATLINK", "1995");
+ end if;
+ end Write_Header;
+
+ -----------------
+ -- Write_Usage --
+ -----------------
+
+ procedure Write_Usage is
+ begin
+ Write_Header;
+ Usage;
+ end Write_Usage;
+
+-- Start of processing for Gnatlink
+
+begin
+ -- Add the directory where gnatlink is invoked in front of the path, if
+ -- gnatlink is invoked with directory information. Only do this if the
+ -- platform is not VMS, where the notion of path does not really exist.
+
+ if not Hostparm.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;
+
+ Process_Args;
+
+ if Argument_Count = 0
+ or else (Verbose_Mode and then Argument_Count = 1)
+ then
+ Write_Usage;
+ Exit_Program (E_Fatal);
+ end if;
+
+ -- Initialize packages to be used
+
+ Csets.Initialize;
+ Snames.Initialize;
+
+ -- We always compile with -c
+
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
+ new String'("-c");
+
+ if Ali_File_Name = null then
+ Exit_With_Error ("no ali file given for link");
+ end if;
+
+ if not Is_Regular_File (Ali_File_Name.all) then
+ Exit_With_Error (Ali_File_Name.all & " not found");
+ end if;
+
+ -- Read the ALI file of the main subprogram if the binder generated file
+ -- needs to be compiled and no --GCC= switch has been specified. Fetch the
+ -- back end switches from this ALI file and use these switches to compile
+ -- the binder generated file
+
+ if Compile_Bind_File and then Standard_Gcc then
+ Initialize_ALI;
+ Name_Len := Ali_File_Name'Length;
+ Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
+
+ declare
+ use Types;
+ F : constant File_Name_Type := Name_Find;
+ T : Text_Buffer_Ptr;
+ A : ALI_Id;
+
+ begin
+ -- Load the ALI file
+
+ T := Read_Library_Info (F, True);
+
+ -- Read it. Note that we ignore errors, since we only want very
+ -- limited information from the ali file, and likely a slightly
+ -- wrong version will be just fine, though in normal operation
+ -- we don't expect this to happen!
+
+ A := Scan_ALI
+ (F,
+ T,
+ Ignore_ED => False,
+ Err => False,
+ Ignore_Errors => True);
+
+ if A /= No_ALI_Id then
+ for
+ Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
+ Units.Table (ALIs.Table (A).First_Unit).Last_Arg
+ loop
+ -- Do not compile with the front end switches. However, --RTS
+ -- is to be dealt with specially because it needs to be passed
+ -- if the binder-generated file is in Ada and may also be used
+ -- to drive the linker.
+
+ declare
+ Arg : String_Ptr renames Args.Table (Index);
+ begin
+ if not Is_Front_End_Switch (Arg.all) then
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table
+ (Binder_Options_From_ALI.Last) := String_Access (Arg);
+
+ elsif Arg'Length > 5
+ and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
+ then
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table
+ (Binder_Options_From_ALI.Last) := String_Access (Arg);
+
+ -- Set the RTS_*_Path_Name variables, so that
+ -- the correct directories will be set when
+ -- Osint.Add_Default_Search_Dirs will be called later.
+
+ Opt.RTS_Src_Path_Name :=
+ Get_RTS_Search_Dir
+ (Arg (Arg'First + 6 .. Arg'Last), Include);
+
+ Opt.RTS_Lib_Path_Name :=
+ Get_RTS_Search_Dir
+ (Arg (Arg'First + 6 .. Arg'Last), Objects);
+
+ -- GNAT doesn't support the GCC multilib mechanism.
+ -- This means that, when a multilib switch is used
+ -- to request a particular compilation mode, the
+ -- corresponding runtime switch (--RTS) must also be
+ -- specified. The long-term goal is to fully support the
+ -- multilib mechanism; however, in the meantime, it is
+ -- convenient to eliminate the redundancy by keying the
+ -- compilation mode on a single switch, namely --RTS.
+
+ -- Pass -mrtp to the linker if --RTS=rtp was passed
+
+ if Arg'Length > 8
+ and then
+ (Arg (Arg'First + 6 .. Arg'First + 8) = "rtp"
+ or else Arg (Arg'Last - 2 .. Arg'Last) = "rtp")
+ then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'("-mrtp");
+ end if;
+ end if;
+ end;
+ end loop;
+ end if;
+ end;
+ end if;
+
+ -- Get target parameters
+
+ Osint.Add_Default_Search_Dirs;
+ Targparm.Get_Target_Parameters;
+
+ if VM_Target /= No_VM then
+ case VM_Target is
+ when JVM_Target => Gcc := new String'("jvm-gnatcompile");
+ when CLI_Target => Gcc := new String'("dotnet-gnatcompile");
+ when No_VM => raise Program_Error;
+ end case;
+ end if;
+
+ -- Compile the bind file with the following switches:
+
+ -- -gnatA stops reading gnat.adc, since we don't know what
+ -- pragmas would work, and we do not need it anyway.
+
+ -- -gnatWb allows brackets coding for wide characters
+
+ -- -gnatiw allows wide characters in identifiers. This is needed
+ -- because bindgen uses brackets encoding for all upper
+ -- half and wide characters in identifier names.
+
+ -- In addition, in CodePeer mode compile with -gnatcC
+
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
+ new String'("-gnatA");
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
+ new String'("-gnatWb");
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
+ new String'("-gnatiw");
+
+ if Opt.CodePeer_Mode then
+ Binder_Options_From_ALI.Increment_Last;
+ Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
+ new String'("-gnatcC");
+ end if;
+
+ -- Locate all the necessary programs and verify required files are present
+
+ Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
+
+ if Gcc_Path = null then
+ Exit_With_Error ("Couldn't locate " & Gcc.all);
+ end if;
+
+ if Linker_Path = null then
+ if VM_Target = CLI_Target then
+ Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld");
+
+ if Linker_Path = null then
+ Exit_With_Error ("Couldn't locate dotnet-ld");
+ end if;
+
+ elsif RTX_RTSS_Kernel_Module_On_Target then
+
+ -- Use Microsoft linker for RTSS modules
+
+ Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link");
+
+ if Linker_Path = null then
+ Exit_With_Error ("Couldn't locate link");
+ end if;
+
+ else
+ Linker_Path := Gcc_Path;
+ end if;
+ end if;
+
+ Write_Header;
+
+ -- If no output name specified, then use the base name of .ali file name
+
+ if Output_File_Name = null then
+ Output_File_Name :=
+ new String'(Base_Name (Ali_File_Name.all)
+ & Get_Target_Debuggable_Suffix.all);
+ end if;
+
+ if RTX_RTSS_Kernel_Module_On_Target then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'("/OUT:" & Output_File_Name.all);
+
+ else
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) := new String'("-o");
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Output_File_Name.all);
+ end if;
+
+ Check_Existing_Executable (Output_File_Name.all);
+
+ -- Warn if main program is called "test", as that may be a built-in command
+ -- on Unix. On non-Unix systems executables have a suffix, so the warning
+ -- will not appear. However, do not warn in the case of a cross compiler.
+
+ -- Assume this is a cross tool if the executable name is not gnatlink
+
+ if Base_Name (Command_Name) = "gnatlink"
+ and then Output_File_Name.all = "test"
+ then
+ Error_Msg ("warning: executable name """ & Output_File_Name.all
+ & """ may conflict with shell command");
+ end if;
+
+ -- If -M switch was specified, add the switches to create the map file
+
+ if Create_Map_File then
+ declare
+ Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
+ Switches : String_List_Access;
+
+ begin
+ Convert (Map_File, Map_Name, Switches);
+
+ if Switches /= null then
+ for J in Switches'Range loop
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) := Switches (J);
+ end loop;
+ end if;
+ end;
+ end if;
+
+ -- Perform consistency checks
+
+ -- Transform the .ali file name into the binder output file name
+
+ Make_Binder_File_Names : declare
+ Fname : constant String := Base_Name (Ali_File_Name.all);
+ Fname_Len : Integer := Fname'Length;
+
+ function Get_Maximum_File_Name_Length return Integer;
+ pragma Import (C, Get_Maximum_File_Name_Length,
+ "__gnat_get_maximum_file_name_length");
+
+ Maximum_File_Name_Length : constant Integer :=
+ Get_Maximum_File_Name_Length;
+
+ Bind_File_Prefix : Types.String_Ptr;
+ -- Contains prefix used for bind files
+
+ begin
+ -- Set prefix
+
+ if OpenVMS_On_Target then
+ Bind_File_Prefix := new String'("b__");
+ else
+ Bind_File_Prefix := new String'("b~");
+ end if;
+
+ -- If the length of the binder file becomes too long due to
+ -- the addition of the "b?" prefix, then truncate it.
+
+ if Maximum_File_Name_Length > 0 then
+ while Fname_Len >
+ Maximum_File_Name_Length - Bind_File_Prefix.all'Length
+ loop
+ Fname_Len := Fname_Len - 1;
+ end loop;
+ end if;
+
+ declare
+ Fnam : constant String :=
+ Bind_File_Prefix.all &
+ Fname (Fname'First .. Fname'First + Fname_Len - 1);
+
+ begin
+ Binder_Spec_Src_File := new String'(Fnam & ".ads");
+ Binder_Body_Src_File := new String'(Fnam & ".adb");
+ Binder_Ali_File := new String'(Fnam & ".ali");
+
+ Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
+ end;
+
+ if Fname_Len /= Fname'Length then
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) := new String'("-o");
+ Binder_Options.Increment_Last;
+ Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
+ end if;
+ end Make_Binder_File_Names;
+
+ Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
+
+ -- Compile the binder file. This is fast, so we always do it, unless
+ -- specifically told not to by the -n switch
+
+ if Compile_Bind_File then
+ Bind_Step : declare
+ Success : Boolean;
+ Args : Argument_List
+ (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
+
+ begin
+ for J in 1 .. Binder_Options_From_ALI.Last loop
+ Args (J) := Binder_Options_From_ALI.Table (J);
+ end loop;
+
+ for J in 1 .. Binder_Options.Last loop
+ Args (Binder_Options_From_ALI.Last + J) :=
+ Binder_Options.Table (J);
+ end loop;
+
+ -- Use the full path of the binder generated source, so that it is
+ -- guaranteed that the debugger will find this source, even with
+ -- STABS.
+
+ Args (Args'Last) :=
+ new String'(Normalize_Pathname (Binder_Body_Src_File.all));
+
+ if Verbose_Mode then
+ Write_Str (Base_Name (Gcc_Path.all));
+
+ for J in Args'Range loop
+ Write_Str (" ");
+ Write_Str (Args (J).all);
+ end loop;
+
+ Write_Eol;
+ end if;
+
+ System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
+
+ if not Success then
+ Exit_Program (E_Fatal);
+ end if;
+ end Bind_Step;
+ end if;
+
+ -- In CodePeer mode, there's nothing left to do after the binder file has
+ -- been compiled.
+
+ if Opt.CodePeer_Mode then
+ return;
+ end if;
+
+ -- Now, actually link the program
+
+ -- Skip this step for now on JVM since the Java interpreter will do
+ -- the actual link at run time. We might consider packing all class files
+ -- in a .zip file during this step.
+
+ if VM_Target /= JVM_Target then
+ Link_Step : declare
+ Num_Args : Natural :=
+ (Linker_Options.Last - Linker_Options.First + 1) +
+ (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
+ (Linker_Objects.Last - Linker_Objects.First + 1);
+ Stack_Op : Boolean := False;
+ IDENT_Op : Boolean := False;
+
+ begin
+ if AAMP_On_Target then
+
+ -- Remove extraneous flags not relevant for AAMP
+
+ for J in reverse Linker_Options.First .. Linker_Options.Last loop
+ if Linker_Options.Table (J)'Length = 0
+ or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
+ or else Linker_Options.Table (J) (1 .. 3) = "-sh"
+ or else Linker_Options.Table (J) (1 .. 2) = "-O"
+ or else Linker_Options.Table (J) (1 .. 2) = "-g"
+ then
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+ end if;
+ end loop;
+
+ elsif RTX_RTSS_Kernel_Module_On_Target then
+
+ -- Remove flags not relevant for Microsoft linker and adapt some
+ -- others.
+
+ for J in reverse Linker_Options.First .. Linker_Options.Last loop
+
+ -- Remove flags that are not accepted
+
+ if Linker_Options.Table (J)'Length = 0
+ or else Linker_Options.Table (J) (1 .. 2) = "-l"
+ or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
+ or else Linker_Options.Table (J) (1 .. 3) = "-sh"
+ or else Linker_Options.Table (J) (1 .. 2) = "-O"
+ or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker"
+ or else Linker_Options.Table (J) (1 .. 9) = "-mthreads"
+ then
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+
+ -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by
+ -- Windows "\".
+ elsif Linker_Options.Table (J) (1 .. 2) = "-L" then
+ declare
+ Libpath_Option : constant String_Access := new String'
+ ("/LIBPATH:" &
+ Linker_Options.Table (J)
+ (3 .. Linker_Options.Table (J).all'Last));
+ begin
+ for Index in 10 .. Libpath_Option'Last loop
+ if Libpath_Option (Index) = '/' then
+ Libpath_Option (Index) := '\';
+ end if;
+ end loop;
+
+ Linker_Options.Table (J) := Libpath_Option;
+ end;
+
+ -- Replace "-g" by "/DEBUG"
+ elsif Linker_Options.Table (J) (1 .. 2) = "-g" then
+ Linker_Options.Table (J) := new String'("/DEBUG");
+
+ -- Replace "-o" by "/OUT:"
+ elsif Linker_Options.Table (J) (1 .. 2) = "-o" then
+ Linker_Options.Table (J + 1) := new String'
+ ("/OUT:" & Linker_Options.Table (J + 1).all);
+
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+
+ -- Replace "--stack=" by "/STACK:"
+ elsif Linker_Options.Table (J) (1 .. 8) = "--stack=" then
+ Linker_Options.Table (J) := new String'
+ ("/STACK:" &
+ Linker_Options.Table (J)
+ (9 .. Linker_Options.Table (J).all'Last));
+
+ -- Replace "-v" by its counterpart "/VERBOSE"
+ elsif Linker_Options.Table (J) (1 .. 2) = "-v" then
+ Linker_Options.Table (J) := new String'("/VERBOSE");
+ end if;
+ end loop;
+
+ -- Add some required flags to create RTSS modules
+
+ declare
+ Flags_For_Linker : constant array (1 .. 17) of String_Access :=
+ (new String'("/NODEFAULTLIB"),
+ new String'("/INCREMENTAL:NO"),
+ new String'("/NOLOGO"),
+ new String'("/DRIVER"),
+ new String'("/ALIGN:0x20"),
+ new String'("/SUBSYSTEM:NATIVE"),
+ new String'("/ENTRY:_RtapiProcessEntryCRT@8"),
+ new String'("/RELEASE"),
+ new String'("startupCRT.obj"),
+ new String'("rtxlibcmt.lib"),
+ new String'("oldnames.lib"),
+ new String'("rtapi_rtss.lib"),
+ new String'("Rtx_Rtss.lib"),
+ new String'("libkernel32.a"),
+ new String'("libws2_32.a"),
+ new String'("libmswsock.a"),
+ new String'("libadvapi32.a"));
+ -- These flags need to be passed to Microsoft linker. They
+ -- come from the RTX documentation.
+
+ Gcc_Lib_Path : constant String_Access := new String'
+ ("/LIBPATH:" & Include_Dir_Default_Prefix & "\..\");
+ -- Place to look for gcc related libraries, such as libgcc
+
+ begin
+ -- Replace UNIX "/" by Windows "\" in the path
+
+ for Index in 10 .. Gcc_Lib_Path.all'Last loop
+ if Gcc_Lib_Path (Index) = '/' then
+ Gcc_Lib_Path (Index) := '\';
+ end if;
+ end loop;
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) := Gcc_Lib_Path;
+ Num_Args := Num_Args + 1;
+
+ for Index in Flags_For_Linker'Range loop
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ Flags_For_Linker (Index);
+ Num_Args := Num_Args + 1;
+ end loop;
+ end;
+ end if;
+
+ -- Remove duplicate stack size setting from the Linker_Options
+ -- table. The stack setting option "-Xlinker --stack=R,C" can be
+ -- found in one line when set by a pragma Linker_Options or in two
+ -- lines ("-Xlinker" then "--stack=R,C") when set on the command
+ -- line. We also check for the "-Wl,--stack=R" style option.
+
+ -- We must remove the second stack setting option instance
+ -- because the one on the command line will always be the first
+ -- one. And any subsequent stack setting option will overwrite the
+ -- previous one. This is done especially for GNAT/NT where we set
+ -- the stack size for tasking programs by a pragma in the NT
+ -- specific tasking package System.Task_Primitives.Operations.
+
+ -- Note: This is not a FOR loop that runs from Linker_Options.First
+ -- to Linker_Options.Last, since operations within the loop can
+ -- modify the length of the table.
+
+ Clean_Link_Option_Set : declare
+ J : Natural := Linker_Options.First;
+ Shared_Libgcc_Seen : Boolean := False;
+
+ begin
+ while J <= Linker_Options.Last loop
+
+ if Linker_Options.Table (J).all = "-Xlinker"
+ and then J < Linker_Options.Last
+ and then Linker_Options.Table (J + 1)'Length > 8
+ and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
+ then
+ if Stack_Op then
+ Linker_Options.Table (J .. Linker_Options.Last - 2) :=
+ Linker_Options.Table (J + 2 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 2;
+
+ else
+ Stack_Op := True;
+ end if;
+ end if;
+
+ -- Remove duplicate -shared-libgcc switch
+
+ if Linker_Options.Table (J).all = Shared_Libgcc_String then
+ if Shared_Libgcc_Seen then
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+
+ else
+ Shared_Libgcc_Seen := True;
+ end if;
+ end if;
+
+ -- Here we just check for a canonical form that matches the
+ -- pragma Linker_Options set in the NT runtime.
+
+ if (Linker_Options.Table (J)'Length > 17
+ and then Linker_Options.Table (J) (1 .. 17)
+ = "-Xlinker --stack=")
+ or else
+ (Linker_Options.Table (J)'Length > 12
+ and then Linker_Options.Table (J) (1 .. 12)
+ = "-Wl,--stack=")
+ then
+ if Stack_Op then
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+
+ else
+ Stack_Op := True;
+ end if;
+ end if;
+
+ -- Remove duplicate IDENTIFICATION directives (VMS)
+
+ if Linker_Options.Table (J)'Length > 29
+ and then Linker_Options.Table (J) (1 .. 30) =
+ "--for-linker=--identification="
+ then
+ if IDENT_Op then
+ Linker_Options.Table (J .. Linker_Options.Last - 1) :=
+ Linker_Options.Table (J + 1 .. Linker_Options.Last);
+ Linker_Options.Decrement_Last;
+ Num_Args := Num_Args - 1;
+
+ else
+ IDENT_Op := True;
+ end if;
+ end if;
+
+ J := J + 1;
+ end loop;
+
+ if Linker_Path = Gcc_Path and then VM_Target = No_VM then
+
+ -- For systems where the default is to link statically with
+ -- libgcc, if gcc is not called with -shared-libgcc, call it
+ -- with -static-libgcc, as there are some platforms where one
+ -- of these two switches is compulsory to link.
+
+ if Shared_Libgcc_Default = 'T'
+ and then not Shared_Libgcc_Seen
+ then
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
+ Num_Args := Num_Args + 1;
+ end if;
+
+ elsif RTX_RTSS_Kernel_Module_On_Target then
+
+ -- Force the use of the static libgcc for RTSS modules
+
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'("libgcc.a");
+ Num_Args := Num_Args + 1;
+ end if;
+
+ end Clean_Link_Option_Set;
+
+ -- Prepare arguments for call to linker
+
+ Call_Linker : declare
+ Success : Boolean;
+ Args : Argument_List (1 .. Num_Args + 1);
+ Index : Integer := Args'First;
+
+ begin
+ Args (Index) := Binder_Obj_File;
+
+ -- Add the object files and any -largs libraries
+
+ for J in Linker_Objects.First .. Linker_Objects.Last loop
+ Index := Index + 1;
+ Args (Index) := Linker_Objects.Table (J);
+ end loop;
+
+ -- Add the linker options from the binder file
+
+ for J in Linker_Options.First .. Linker_Options.Last loop
+ Index := Index + 1;
+ Args (Index) := Linker_Options.Table (J);
+ end loop;
+
+ -- Finally add the libraries from the --GCC= switch
+
+ for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
+ Index := Index + 1;
+ Args (Index) := Gcc_Linker_Options.Table (J);
+ end loop;
+
+ if Verbose_Mode then
+ Write_Str (Linker_Path.all);
+
+ for J in Args'Range loop
+ Write_Str (" ");
+ Write_Str (Args (J).all);
+ end loop;
+
+ Write_Eol;
+
+ -- If we are on very verbose mode (-v -v) and a response file
+ -- is used we display its content.
+
+ if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
+ Write_Eol;
+ Write_Str ("Response file (" &
+ Tname (Tname'First .. Tname'Last - 1) &
+ ") content : ");
+ Write_Eol;
+
+ for J in
+ Response_File_Objects.First ..
+ Response_File_Objects.Last
+ loop
+ Write_Str (Response_File_Objects.Table (J).all);
+ Write_Eol;
+ end loop;
+
+ Write_Eol;
+ end if;
+ end if;
+
+ System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
+
+ if Success then
+ -- Delete the temporary file used in conjunction with linking
+ -- if one was created. See Process_Bind_File for details.
+
+ if Tname_FD /= Invalid_FD then
+ Delete (Tname);
+ end if;
+
+ else
+ Error_Msg ("error when calling " & Linker_Path.all);
+ Exit_Program (E_Fatal);
+ end if;
+ end Call_Linker;
+ end Link_Step;
+ end if;
+
+ -- Only keep the binder output file and it's associated object
+ -- file if compiling with the -g option. These files are only
+ -- useful if debugging.
+
+ if not Debug_Flag_Present then
+ Delete (Binder_Ali_File.all & ASCII.NUL);
+ Delete (Binder_Spec_Src_File.all & ASCII.NUL);
+ Delete (Binder_Body_Src_File.all & ASCII.NUL);
+
+ if VM_Target = No_VM then
+ Delete (Binder_Obj_File.all & ASCII.NUL);
+ end if;
+ end if;
+
+ Exit_Program (E_Success);
+
+exception
+ when X : others =>
+ Write_Line (Exception_Information (X));
+ Exit_With_Error ("INTERNAL ERROR. Please report");
+end Gnatlink;