+++ /dev/null
-------------------------------------------------------------------------------
--- --
--- GNAT COMPILER COMPONENTS --
--- --
--- G N A T L I N K --
--- --
--- B o d y --
--- --
--- $Revision: 1.2.10.1 $
--- --
--- Copyright (C) 1996-2001 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 2, 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 COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
--- --
--- 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 Gnatvsn; use Gnatvsn;
-with Hostparm;
-with Osint; use Osint;
-with Output; use Output;
-with System; use System;
-with Table;
-
-with Ada.Command_Line; use Ada.Command_Line;
-with GNAT.OS_Lib; use GNAT.OS_Lib;
-with Interfaces.C_Streams; use Interfaces.C_Streams;
-
-procedure Gnatlink is
-
- pragma Ident (Gnat_Version_String);
-
- 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 => 2,
- 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 fullname.
-
- 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 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.
-
- 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 ";
- -- Note: above lines are modified in C mode, see option processing
-
- 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;
-
- Ada_Bind_File : Boolean := True;
- -- Set to True if bind file is generated in Ada
-
- Compile_Bind_File : Boolean := True;
- -- Set to False if bind file is not to be compiled
-
- Object_List_File_Supported : Boolean;
- pragma Import (C, Object_List_File_Supported, "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_List_File_Required : Boolean := False;
- -- Set to True to force generation of a response file
-
- function Base_Name (File_Name : in String) return String;
- -- Return just the file name part without the extension (if present).
-
- procedure Delete (Name : in String);
- -- Wrapper to unlink as status is ignored by this application.
-
- procedure Error_Msg (Message : in String);
- -- Output the error or warning Message
-
- procedure Exit_With_Error (Error : in 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 : 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_Usage;
- -- Show user the program options.
-
- ---------------
- -- Base_Name --
- ---------------
-
- function Base_Name (File_Name : in 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;
-
- ------------
- -- Delete --
- ------------
-
- procedure Delete (Name : in String) is
- Status : int;
-
- begin
- Status := unlink (Name'Address);
- end Delete;
-
- ---------------
- -- Error_Msg --
- ---------------
-
- procedure Error_Msg (Message : in 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 : in String) is
- begin
- Error_Msg (Error);
- Exit_Program (E_Fatal);
- end Exit_With_Error;
-
- ------------------
- -- Process_Args --
- ------------------
-
- procedure Process_Args is
- Next_Arg : Integer;
-
- begin
- Binder_Options.Increment_Last;
- Binder_Options.Table (Binder_Options.Last) := new String'("-c");
-
- -- If the main program is in Ada it is compiled with the following
- -- switches:
-
- -- -gnatA stops reading gnat.adc, since we don't know what
- -- pagmas 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.
-
- if Ada_Bind_File then
- Binder_Options.Increment_Last;
- Binder_Options.Table (Binder_Options.Last) := new String'("-gnatA");
- Binder_Options.Increment_Last;
- Binder_Options.Table (Binder_Options.Last) := new String'("-gnatWb");
- Binder_Options.Increment_Last;
- Binder_Options.Table (Binder_Options.Last) := new String'("-gnatiw");
- end if;
-
- -- Loop through arguments of gnatlink command
-
- Next_Arg := 1;
- loop
- exit when Next_Arg > Argument_Count;
-
- Process_One_Arg : declare
- Arg : 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) = Switch_Character or else 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 (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 = 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 ";
-
- 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 : 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 'C' =>
- Ada_Bind_File := False;
- 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_Required := True;
- else
- Exit_With_Error
- ("Object list file not supported on this target");
- end if;
-
- when 'n' =>
- Compile_Bind_File := False;
-
- when 'o' =>
- Linker_Options.Increment_Last;
- Linker_Options.Table (Linker_Options.Last) :=
- new String'(Arg);
-
- 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'(Argument (Next_Arg));
-
- Linker_Options.Increment_Last;
- Linker_Options.Table (Linker_Options.Last) :=
- Output_File_Name;
-
- 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 :=
- GNAT.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 : Argument_List_Access :=
- Argument_String_To_List
- (Arg (7 .. Arg'Last));
-
- begin
- Gcc := new String'(Program_Args.all (1).all);
-
- -- Set appropriate flags for switches passed
-
- for J in 2 .. Program_Args.all'Last loop
- declare
- Arg : String := Program_Args.all (J).all;
- AF : Integer := Arg'First;
-
- begin
- if Arg'Length /= 0
- and then (Arg (AF) = Switch_Character
- or else 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;
-
- -- 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 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;
-
- elsif Is_Regular_File (Arg & ".ali")
- and then Ali_File_Name = null
- then
- Ali_File_Name := new String'(Arg & ".ali");
-
- 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);
-
- 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;
-
- -- If Ada bind file, then compile it with warnings suppressed, because
- -- otherwise the with of the main program may cause junk warnings.
-
- if Ada_Bind_File then
- Binder_Options.Increment_Last;
- Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
- end if;
- end Process_Args;
-
- -------------------------
- -- Process_Binder_File --
- -------------------------
-
- procedure Process_Binder_File (Name : in String) is
- Fd : FILEs;
- Link_Bytes : Integer := 0;
- Link_Max : Integer;
- pragma Import (C, Link_Max, "link_max");
-
- Next_Line : String (1 .. 1000);
- Nlast : Integer;
- Nfirst : Integer;
- Objs_Begin : Integer := 0;
- Objs_End : Integer := 0;
-
- Status : int;
- N : Integer;
-
- GNAT_Static : Boolean := False;
- -- Save state of -static option.
-
- GNAT_Shared : Boolean := False;
- -- Save state of -shared option.
-
- Run_Path_Option_Ptr : Address;
- pragma Import (C, Run_Path_Option_Ptr, "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");
- -- 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");
- -- 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");
- -- Predicate indicating whether this target uses the GNU linker. In
- -- this case we must output a GNU linker compatible response file.
-
- procedure Get_Next_Line;
- -- Read the next line from the binder file without the line
- -- terminator.
-
- function Is_Option_Present (Opt : in String) return Boolean;
- -- Return true if the option Opt is already present in
- -- Linker_Options table.
-
- 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;
-
- function Is_Option_Present (Opt : in 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;
-
- -- 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
- -- No_Run_Time mode where no -L switches are generated)
-
- exit when Next_Line (Nfirst .. Nlast) = End_Info;
-
- if Ada_Bind_File then
- Next_Line (Nfirst .. Nlast - 8) :=
- Next_Line (Nfirst + 8 .. Nlast);
- Nlast := Nlast - 8;
- end if;
-
- -- 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;
- end loop;
-
- Objs_End := Linker_Objects.Last;
-
- -- 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);
-
- -- 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 ... )
-
- if Using_GNU_Linker then
- declare
- GNU_Header : aliased constant String := "INPUT (";
-
- begin
- Status := Write (Tname_FD, GNU_Header'Address,
- GNU_Header'Length);
- end;
- end if;
-
- for J in Objs_Begin .. Objs_End loop
- Status := Write (Tname_FD, Linker_Objects.Table (J).all'Address,
- Linker_Objects.Table (J).all'Length);
- Status := Write (Tname_FD, ASCII.LF'Address, 1);
-
- 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.
-
- if Using_GNU_Linker then
- declare
- GNU_Footer : aliased constant String := ")";
-
- begin
- Status := Write (Tname_FD, GNU_Footer'Address,
- GNU_Footer'Length);
- end;
- end if;
-
- Close (Tname_FD);
-
- -- 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'(Value (Object_File_Option_Ptr) &
- 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.
-
- 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 if;
-
- -- Process switches and options
-
- if Next_Line (Nfirst .. Nlast) /= End_Info then
- loop
- -- Add binder options only if not already set on the command
- -- line. This rule is a way to control the linker options order.
-
- if not Is_Option_Present
- (Next_Line (Nfirst .. Nlast))
- then
- if Next_Line (Nfirst .. Nlast) = "-static" then
- GNAT_Static := True;
-
- elsif Next_Line (Nfirst .. Nlast) = "-shared" then
- GNAT_Shared := True;
-
- else
- 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"
- then
- -- 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);
-
- File_Name : String :=
- "lib" &
- Next_Line (Nfirst + 2 .. Nlast) &
- Object_Lib_Extension;
-
- 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 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));
- end if;
-
- Linker_Options.Increment_Last;
-
- Linker_Options.Table
- (Linker_Options.Last) :=
- new String'(Next_Line
- (Nfirst .. Nlast));
-
- end;
- end if;
-
- else
- -- If gnatlib library not found, then
- -- add it anyway in case some other
- -- mechanimsm 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;
- end if;
-
- 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);
- Nlast := Nlast - 8;
- end if;
- end loop;
- end if;
-
- 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);
-
- 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;
- end if;
- end Value;
-
- -----------------
- -- Write_Usage --
- -----------------
-
- procedure Write_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_Line (" -A Binder generated source file is in Ada (default)");
- Write_Line (" -C Binder generated source file is in C");
- 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 (" -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");
- 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 Write_Usage;
-
--- Start of processing for Gnatlink
-
-begin
-
- if Argument_Count = 0 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 ";
- end if;
-
- Process_Args;
-
- -- Locate all the necessary programs and verify required files are present
-
- Gcc_Path := GNAT.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
- Linker_Path := Gcc_Path;
- end if;
-
- if Ali_File_Name = null then
- Exit_With_Error ("Required 'name'.ali not present.");
- end if;
-
- if not Is_Regular_File (Ali_File_Name.all) then
- Exit_With_Error (Ali_File_Name.all & " not found.");
- end if;
-
- if Verbose_Mode then
- Write_Eol;
- Write_Str ("GNATLINK ");
- Write_Str (Gnat_Version_String);
- Write_Str (" Copyright 1996-2001 Free Software Foundation, Inc.");
- Write_Eol;
- end if;
-
- -- If there wasn't an output specified, then use the base name of
- -- the .ali file name.
-
- if Output_File_Name = null then
-
- Output_File_Name :=
- new String'(Base_Name (Ali_File_Name.all)
- & Get_Debuggable_Suffix.all);
-
- 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;
-
- -- 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 that if the executable name is not gnatlink, this is a cross
- -- tool.
-
- 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;
-
- -- Perform consistency checks
-
- -- 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_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;
-
- Second_Char : Character;
- -- Second character of name of files
-
- begin
- -- Set proper second character of file name
-
- if not Ada_Bind_File then
- Second_Char := '_';
-
- elsif Hostparm.OpenVMS then
- Second_Char := '$';
-
- else
- Second_Char := '~';
- 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 - 2 loop
- Fname_Len := Fname_Len - 1;
- end loop;
- end if;
-
- if Ada_Bind_File then
- Binder_Spec_Src_File :=
- new String'('b'
- & Second_Char
- & Fname (Fname'First .. Fname'First + Fname_Len - 1)
- & ".ads");
- Binder_Body_Src_File :=
- new String'('b'
- & Second_Char
- & Fname (Fname'First .. Fname'First + Fname_Len - 1)
- & ".adb");
- Binder_Ali_File :=
- new String'('b'
- & Second_Char
- & Fname (Fname'First .. Fname'First + Fname_Len - 1)
- & ".ali");
-
- else
- Binder_Body_Src_File :=
- new String'('b'
- & Second_Char
- & Fname (Fname'First .. Fname'First + Fname_Len - 1)
- & ".c");
- end if;
-
- Binder_Obj_File :=
- new String'('b'
- & Second_Char
- & Fname (Fname'First .. Fname'First + Fname_Len - 1)
- & Get_Object_Suffix.all);
-
- 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.Last + 1);
-
- begin
- for J in Binder_Options.First .. Binder_Options.Last loop
- Args (J) := Binder_Options.Table (J);
- end loop;
-
- Args (Args'Last) := Binder_Body_Src_File;
-
- 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;
-
- GNAT.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
-
- if not Success then
- Exit_Program (E_Fatal);
- end if;
- end Bind_Step;
- end if;
-
- -- Now, actually link the program.
-
- -- Skip this step for now on the 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 not Hostparm.Java_VM 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
- -- 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.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;
-
- else
- Stack_Op := 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 > 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;
- end if;
- end if;
- end loop;
-
- -- 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;
-
- GNAT.OS_Lib.Spawn (Linker_Path.all, Args, Success);
-
- -- Delete the temporary file used in conjuction with linking if
- -- one was created. See Process_Bind_File for details.
-
- if Tname_FD /= Invalid_FD then
- Delete (Tname);
- end if;
-
- if not Success then
- Error_Msg ("cannot call " & 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
- if Binder_Ali_File /= null then
- Delete (Binder_Ali_File.all & ASCII.NUL);
- end if;
-
- if Binder_Spec_Src_File /= null then
- Delete (Binder_Spec_Src_File.all & ASCII.NUL);
- end if;
-
- Delete (Binder_Body_Src_File.all & ASCII.NUL);
-
- if not Hostparm.Java_VM then
- Delete (Binder_Obj_File.all & ASCII.NUL);
- end if;
- end if;
-
- Exit_Program (E_Success);
-
-exception
- when others =>
- Exit_With_Error ("INTERNAL ERROR. Please report.");
-end Gnatlink;
projects / msp430-gcc.git / blobdiff