-- --
-- B o d y --
-- --
--- --
--- Copyright (C) 1996-2002 Free Software Foundation, Inc. --
+-- Copyright (C) 1996-2004 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- --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
--- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Gnatlink usage: please consult the gnat documentation
-with Ada.Exceptions; use Ada.Exceptions;
with ALI; use ALI;
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 Switch; use Switch;
with Types;
with Ada.Command_Line; use Ada.Command_Line;
+with Ada.Exceptions; use Ada.Exceptions;
with GNAT.OS_Lib; use GNAT.OS_Lib;
with Interfaces.C_Streams; use Interfaces.C_Streams;
+with Interfaces.C.Strings; use Interfaces.C.Strings;
+with System.CRTL;
procedure Gnatlink is
-
- pragma Ident (Gnat_Version_String);
+ pragma Ident (Gnatvsn.Gnat_Static_Version_String);
package Gcc_Linker_Options is new Table.Table (
Table_Component_Type => String_Access,
-- This table collects the arguments to be passed to compile the binder
-- generated file.
- subtype chars_ptr is System.Address;
-
Gcc : String_Access := Program_Name ("gcc");
Read_Mode : constant String := "r" & ASCII.Nul;
- Begin_Info : String := "-- BEGIN Object file/option list";
- End_Info : String := "-- END Object file/option list ";
+ Begin_Info : String := "-- BEGIN Object file/option list";
+ End_Info : String := "-- END Object file/option list ";
-- Note: above lines are modified in C mode, see option processing
Gcc_Path : String_Access;
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;
- pragma Import (C, Object_List_File_Supported, "objlist_file_supported");
+ 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.
procedure Process_Binder_File (Name : in String);
-- Reads the binder file and extracts linker arguments.
- function Value (chars : chars_ptr) return String;
- -- Return NUL-terminated string chars as an Ada string.
+ procedure Write_Header;
+ -- Show user the program name, version and copyright.
procedure Write_Usage;
-- Show user the program options.
procedure Delete (Name : in String) is
Status : int;
-
+ pragma Unreferenced (Status);
begin
Status := unlink (Name'Address);
+ -- Is it really right to ignore an error here ???
end Delete;
---------------
------------------
procedure Process_Args is
- Next_Arg : Integer;
+ 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.
begin
-- Loop through arguments of gnatlink command
exit when Next_Arg > Argument_Count;
Process_One_Arg : declare
- Arg : String := Argument (Next_Arg);
+ Arg : constant String := Argument (Next_Arg);
begin
-- Case of argument which is a switch
-- We definitely need section by section comments here ???
- if Arg'Length /= 0 and then Arg (1) = '-' then
+ 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
("invalid switch: """ & Arg & """ (gnat not needed here)");
end if;
- if Arg (2) = 'g'
+ 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;
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 'A' =>
Ada_Bind_File := True;
- Begin_Info := "-- BEGIN Object file/option list";
- End_Info := "-- END Object file/option list ";
+ Begin_Info := "-- BEGIN Object file/option list";
+ End_Info := "-- END Object file/option list ";
when 'b' =>
Linker_Options.Increment_Last;
end if;
Get_Machine_Name : declare
- Name_Arg : String_Access :=
+ Name_Arg : constant String_Access :=
new String'(Argument (Next_Arg));
begin
when 'C' =>
Ada_Bind_File := False;
- Begin_Info := "/* BEGIN Object file/option list";
- End_Info := " END Object file/option list */";
+ Begin_Info := "/* BEGIN Object file/option list";
+ End_Info := " END Object file/option list */";
when 'f' =>
if Object_List_File_Supported then
("Object list file not supported on this target");
end if;
+ when 'M' =>
+ Create_Map_File := True;
+
when 'n' =>
Compile_Bind_File := False;
Linker_Options.Table (Linker_Options.Last) :=
Output_File_Name;
+ when 'R' =>
+ Opt.Run_Path_Option := False;
+
when 'v' =>
-- Support "double" verbose mode. Second -v
elsif Arg (2) = 'B' then
Linker_Options.Increment_Last;
Linker_Options.Table (Linker_Options.Last) :=
- new String'(Arg);
+ new String'(Arg);
Binder_Options.Increment_Last;
Binder_Options.Table (Binder_Options.Last) :=
elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
declare
- Program_Args : Argument_List_Access :=
+ Program_Args : constant Argument_List_Access :=
Argument_String_To_List
(Arg (7 .. Arg'Last));
for J in 2 .. Program_Args.all'Last loop
declare
- Arg : String := Program_Args.all (J).all;
- AF : Integer := Arg'First;
+ Arg : constant String := Program_Args.all (J).all;
+ AF : constant Integer := Arg'First;
begin
if Arg'Length /= 0 and then Arg (AF) = '-' then
-- 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
Exit_With_Error ("cannot handle more than one ALI file");
end if;
- elsif Is_Regular_File (Arg & ".ali")
- and then Ali_File_Name = null
- then
- Ali_File_Name := new String'(Arg & ".ali");
+ -- If object file, record object file
elsif Arg'Length > Get_Object_Suffix.all'Length
and then Arg
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;
Binder_Options.Increment_Last;
Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
end if;
+
+ -- 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;
-------------------------
-------------------------
procedure Process_Binder_File (Name : in String) is
- Fd : FILEs;
- Link_Bytes : Integer := 0;
- Link_Max : Integer;
- pragma Import (C, Link_Max, "link_max");
+ 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);
- Nlast : Integer;
- Nfirst : Integer;
- Objs_Begin : Integer := 0;
- Objs_End : Integer := 0;
+ 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;
+ -- Used for various Interfaces.C_Streams calls
- Status : int;
- N : Integer;
+ Closing_Status : Boolean;
+ -- For call to Close
- GNAT_Static : Boolean := False;
+ GNAT_Static : Boolean := False;
-- Save state of -static option.
- GNAT_Shared : Boolean := False;
+ GNAT_Shared : Boolean := False;
-- Save state of -shared option.
- Run_Path_Option_Ptr : Address;
- pragma Import (C, Run_Path_Option_Ptr, "run_path_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.
- Object_Library_Ext_Ptr : Address;
- pragma Import (C, Object_Library_Ext_Ptr, "object_library_extension");
+ 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".
- Object_File_Option_Ptr : Address;
- pragma Import (C, Object_File_Option_Ptr, "object_file_option");
+ 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.
Using_GNU_Linker : Boolean;
- pragma Import (C, Using_GNU_Linker, "using_gnu_linker");
+ pragma Import (C, Using_GNU_Linker, "__gnat_using_gnu_linker");
-- Predicate indicating whether this target uses the GNU linker. In
-- this case we must output a GNU linker compatible response file.
+ Opening : aliased constant String := """";
+ Closing : aliased constant String := '"' & ASCII.LF;
+ -- Needed to quote object paths in object list files when GNU linker
+ -- is used.
+
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 : in 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.
+
+ -------------------
+ -- Get_Next_Line --
+ -------------------
+
procedure Get_Next_Line is
Fchars : chars;
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 : in String) return Boolean is
begin
for I in 1 .. Linker_Options.Last 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;
+
-- Start of processing for Process_Binder_File
begin
Get_Next_Line;
-- Go to end when end line is reached (this will happen in
- -- No_Run_Time mode where no -L switches are generated)
+ -- High_Integrity_Mode where no -L switches are generated)
exit when Next_Line (Nfirst .. Nlast) = End_Info;
Linker_Objects.Table (Linker_Objects.Last) :=
new String'(Next_Line (Nfirst .. Nlast));
- Link_Bytes := Link_Bytes + Nlast - Nfirst;
+ 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;
+ -- Let's 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;
+ -- See comment above
+ 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
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.
+
-- If target is using the GNU linker we must add a special header
-- and footer in the response file.
-- The syntax is : INPUT (object1.o object2.o ... )
+ -- Because the GNU linker does not like name with characters such
+ -- as '!', we must put the object paths between double quotes.
if Using_GNU_Linker then
declare
end if;
for J in Objs_Begin .. Objs_End loop
+
+ -- Opening quote for GNU linker
+
+ if Using_GNU_Linker then
+ Status := Write (Tname_FD, Opening'Address, 1);
+ end if;
+
Status := Write (Tname_FD, Linker_Objects.Table (J).all'Address,
- Linker_Objects.Table (J).all'Length);
- Status := Write (Tname_FD, ASCII.LF'Address, 1);
+ Linker_Objects.Table (J).all'Length);
+
+ -- Closing quote for GNU linker
+
+ if Using_GNU_Linker then
+ Status := Write (Tname_FD, Closing'Address, 2);
+
+ else
+ Status := Write (Tname_FD, ASCII.LF'Address, 1);
+ end if;
Response_File_Objects.Increment_Last;
Response_File_Objects.Table (Response_File_Objects.Last) :=
Linker_Objects.Table (J);
end loop;
- -- handle GNU linker response file footer.
+ -- Handle GNU linker response file footer
if Using_GNU_Linker then
declare
end;
end if;
- Close (Tname_FD);
+ 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
-- are removed by moving up the linker options and non-Ada object
-- files appearing after the Ada object list in the table.
- 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;
+ declare
+ N : Integer;
+ begin
+ N := Objs_End - Objs_Begin + 1;
- Linker_Objects.Set_Last (Linker_Objects.Last - N + 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 Next_Line (Nfirst .. Nlast) = "-static" then
+ 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
-- Add binder options only if not already set on the command
-- line. This rule is a way to control the linker options order.
- elsif not Is_Option_Present (Next_Line (Nfirst .. Nlast)) then
+ -- The following test needs comments, why is it VMS specific.
+ -- The above comment looks out of date ???
+
+ elsif not (Hostparm.OpenVMS
+ and then
+ Is_Option_Present (Next_Line (Nfirst .. Nlast)))
+ then
if Nlast > Nfirst + 2 and then
Next_Line (Nfirst .. Nfirst + 1) = "-L"
then
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
declare
File_Path : String_Access;
+
Object_Lib_Extension : constant String :=
- Value (Object_Library_Ext_Ptr);
+ Value (Object_Library_Ext_Ptr);
- File_Name : String := "lib" &
- Next_Line (Nfirst + 2 .. Nlast) & Object_Lib_Extension;
+ 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 :=
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 shared gnatlib desired, add the
- -- appropriate system specific switch
- -- so that it can be located at runtime.
-
- declare
- Run_Path_Opt : constant String :=
- Value (Run_Path_Option_Ptr);
-
- begin
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.
-
- Linker_Options.Increment_Last;
-
- Linker_Options.Table (Linker_Options.Last)
- := new String'(Run_Path_Opt
- & File_Path
- (1 .. File_Path'Length
- - File_Name'Length));
+ -- 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.
+
+ -- 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
+ -- in recent version of GCC. So, we look for
+ -- the last subdirectory "lib" in the path.
+
+ GCC_Index :=
+ Index (File_Path.all, "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 (File_Path.all, "/lib/");
+
+ if GCC_Index = 0 then
+ GCC_Index :=
+ Index (File_Path.all,
+ Directory_Separator &
+ "lib" &
+ Directory_Separator);
+ end if;
+
+ -- We have found a subdirectory "lib",
+ -- this is where the shared version of
+ -- libgcc should be located.
+
+ if GCC_Index /= 0 then
+ GCC_Index := GCC_Index + 3;
+ end if;
+ end if;
+
+ -- Look for an eventual run_path_option in
+ -- the linker switches.
+
+ 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 a 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
+ & File_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
+ & File_Path (1 .. GCC_Index));
+ end if;
+ end if;
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;
+ Linker_Options.Increment_Last;
+ Linker_Options.Table (Linker_Options.Last) :=
+ new String'(Next_Line (Nfirst .. Nlast));
end if;
else
-- mechanimsm may find it.
Linker_Options.Increment_Last;
- Linker_Options.Table (Linker_Options.Last)
- := new String'(Next_Line (Nfirst .. Nlast));
+ 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));
+ 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;
if Ada_Bind_File then
- Next_Line (Nfirst .. Nlast - 8)
- := Next_Line (Nfirst + 8 .. Nlast);
+ Next_Line (Nfirst .. Nlast - 8) :=
+ Next_Line (Nfirst + 8 .. Nlast);
Nlast := Nlast - 8;
end if;
end loop;
Status := fclose (Fd);
end Process_Binder_File;
- -----------
- -- Value --
- -----------
-
- function Value (chars : chars_ptr) return String is
- function Strlen (chars : chars_ptr) return Natural;
- pragma Import (C, Strlen);
+ ------------------
+ -- Write_Header --
+ ------------------
+ procedure Write_Header is
begin
- if chars = Null_Address then
- return "";
-
- else
- declare
- subtype Result_Type is String (1 .. Strlen (chars));
-
- Result : Result_Type;
- for Result'Address use chars;
-
- begin
- return Result;
- end;
+ if Verbose_Mode then
+ Write_Eol;
+ Write_Str ("GNATLINK ");
+ Write_Str (Gnat_Version_String);
+ Write_Str (" Copyright 1995-2004 Free Software Foundation, Inc");
+ Write_Eol;
end if;
- end Value;
+ end Write_Header;
-----------------
-- Write_Usage --
procedure Write_Usage is
begin
+ Write_Header;
+
Write_Str ("Usage: ");
Write_Str (Base_Name (Command_Name));
Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
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 (" -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;
-- Start of processing for Gnatlink
begin
- if Argument_Count = 0 then
+ -- 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;
if Hostparm.Java_VM then
Gcc := new String'("jgnat");
Ada_Bind_File := True;
- Begin_Info := "-- BEGIN Object file/option list";
- End_Info := "-- END Object file/option list ";
+ Begin_Info := "-- BEGIN Object file/option list";
+ End_Info := "-- END Object file/option list ";
end if;
- Process_Args;
-
-- We always compile with -c
Binder_Options_From_ALI.Increment_Last;
end if;
if Ali_File_Name = null then
- Exit_With_Error ("Required 'name'.ali not present.");
+ 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.");
+ Exit_With_Error (Ali_File_Name.all & " not found");
-- Read the ALI file of the main subprogram if the binder generated
- -- file is in Ada, it need 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
+ -- 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
- elsif Ada_Bind_File
- and then Compile_Bind_File
- and then Standard_Gcc
- then
+ elsif Compile_Bind_File and then Standard_Gcc then
-- Do some initializations
Initialize_ALI;
T := Read_Library_Info (F, True);
- -- Read it
+ -- 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, False, False, False);
+ 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
+ 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
-
- if not Is_Front_End_Switch (Args.Table (Index).all) then
- Binder_Options_From_ALI.Increment_Last;
- Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last)
- := String_Access (Args.Table (Index));
- end if;
+ -- Do not compile with the front end switches except for --RTS
+ -- if the binder generated file is in Ada.
+
+ declare
+ Arg : String_Ptr renames Args.Table (Index);
+ begin
+ if not Is_Front_End_Switch (Arg.all)
+ or else
+ (Ada_Bind_File
+ and then 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);
+ end if;
+ end;
end loop;
end if;
end;
end if;
- if Verbose_Mode then
- Write_Eol;
- Write_Str ("GNATLINK ");
- Write_Str (Gnat_Version_String);
- Write_Str (" Copyright 1996-2002 Free Software Foundation, Inc.");
- Write_Eol;
- end if;
+ Write_Header;
- -- If there wasn't an output specified, then use the base name of
- -- the .ali file name.
+ -- If no output name specified, then use the base name of .ali file name
if Output_File_Name = null then
-- 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 that if the executable name is not gnatlink, this is a cross
- -- tool.
+ -- 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"
& """ 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.
+ -- Transform the .ali file name into the binder output file name
Make_Binder_File_Names : declare
- Fname : String := Base_Name (Ali_File_Name.all);
+ 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 : Integer := Get_Maximum_File_Name_Length;
+ Maximum_File_Name_Length : constant Integer :=
+ Get_Maximum_File_Name_Length;
Second_Char : Character;
-- Second character of name of files
-- the stack size for tasking programs by a pragma in the NT
-- specific tasking package System.Task_Primitives.Oparations.
- for J in Linker_Options.First .. 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;
+ -- 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.
- else
- Stack_Op := True;
+ Clean_Link_Option_Set : declare
+ J : Natural := Linker_Options.First;
+
+ 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;
- end if;
- -- Here we just check for a canonical form that matches the
- -- pragma Linker_Options set in the NT runtime.
+ -- 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;
+ 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;
+ else
+ Stack_Op := True;
+ end if;
end if;
- end if;
- -- Remove duplicate IDENTIFICATION directives (VMS)
+ -- Remove duplicate IDENTIFICATION directives (VMS)
- if Linker_Options.Table (J)'Length > 27
- and then Linker_Options.Table (J) (1 .. 27)
- = "--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;
+ if Linker_Options.Table (J)'Length > 27
+ and then Linker_Options.Table (J) (1 .. 28)
+ = "--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;
- end if;
- end loop;
+
+ J := J + 1;
+ end loop;
+ end Clean_Link_Option_Set;
-- Prepare arguments for call to linker
exception
when X : others =>
Write_Line (Exception_Information (X));
- Exit_With_Error ("INTERNAL ERROR. Please report.");
+ Exit_With_Error ("INTERNAL ERROR. Please report");
end Gnatlink;
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