1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2012, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- Gnatlink usage: please consult the gnat documentation
30 with Gnatvsn; use Gnatvsn;
32 with Indepsw; use Indepsw;
33 with Namet; use Namet;
35 with Osint; use Osint;
36 with Output; use Output;
38 with Switch; use Switch;
39 with System; use System;
41 with Targparm; use Targparm;
44 with Ada.Command_Line; use Ada.Command_Line;
45 with Ada.Exceptions; use Ada.Exceptions;
47 with System.OS_Lib; use System.OS_Lib;
50 with Interfaces.C_Streams; use Interfaces.C_Streams;
51 with Interfaces.C.Strings; use Interfaces.C.Strings;
54 pragma Ident (Gnatvsn.Gnat_Static_Version_String);
56 Shared_Libgcc_String : constant String := "-shared-libgcc";
57 Shared_Libgcc : constant String_Access :=
58 new String'(Shared_Libgcc_String);
59 -- Used to invoke gcc when the binder is invoked with -shared
61 Static_Libgcc_String : constant String := "-static-libgcc";
62 Static_Libgcc : constant String_Access :=
63 new String'(Static_Libgcc_String);
64 -- Used to invoke gcc when shared libs are not used
66 package Gcc_Linker_Options is new Table.Table (
67 Table_Component_Type => String_Access,
68 Table_Index_Type => Integer,
71 Table_Increment => 100,
72 Table_Name => "Gnatlink.Gcc_Linker_Options");
73 -- Comments needed ???
75 package Libpath is new Table.Table (
76 Table_Component_Type => Character,
77 Table_Index_Type => Integer,
79 Table_Initial => 4096,
80 Table_Increment => 100,
81 Table_Name => "Gnatlink.Libpath");
82 -- Comments needed ???
84 package Linker_Options is new Table.Table (
85 Table_Component_Type => String_Access,
86 Table_Index_Type => Integer,
89 Table_Increment => 100,
90 Table_Name => "Gnatlink.Linker_Options");
91 -- Comments needed ???
93 package Linker_Objects is new Table.Table (
94 Table_Component_Type => String_Access,
95 Table_Index_Type => Integer,
98 Table_Increment => 100,
99 Table_Name => "Gnatlink.Linker_Objects");
100 -- This table collects the objects file to be passed to the linker. In the
101 -- case where the linker command line is too long then programs objects
102 -- are put on the Response_File_Objects table. Note that the binder object
103 -- file and the user's objects remain in this table. This is very
104 -- important because on the GNU linker command line the -L switch is not
105 -- used to look for objects files but -L switch is used to look for
106 -- objects listed in the response file. This is not a problem with the
107 -- applications objects as they are specified with a full name.
109 package Response_File_Objects is new Table.Table (
110 Table_Component_Type => String_Access,
111 Table_Index_Type => Integer,
112 Table_Low_Bound => 1,
114 Table_Increment => 100,
115 Table_Name => "Gnatlink.Response_File_Objects");
116 -- This table collects the objects file that are to be put in the response
117 -- file. Only application objects are collected there (see details in
118 -- Linker_Objects table comments)
120 package Binder_Options_From_ALI is new Table.Table (
121 Table_Component_Type => String_Access,
122 Table_Index_Type => Integer,
123 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
125 Table_Increment => 100,
126 Table_Name => "Gnatlink.Binder_Options_From_ALI");
127 -- This table collects the switches from the ALI file of the main
130 package Binder_Options is new Table.Table (
131 Table_Component_Type => String_Access,
132 Table_Index_Type => Integer,
133 Table_Low_Bound => 1, -- equals low bound of Argument_List for Spawn
135 Table_Increment => 100,
136 Table_Name => "Gnatlink.Binder_Options");
137 -- This table collects the arguments to be passed to compile the binder
140 Gcc : String_Access := Program_Name ("gcc", "gnatlink");
142 Read_Mode : constant String := "r" & ASCII.NUL;
144 Begin_Info : constant String := "-- BEGIN Object file/option list";
145 End_Info : constant String := "-- END Object file/option list ";
147 Gcc_Path : String_Access;
148 Linker_Path : String_Access;
149 Output_File_Name : String_Access;
150 Ali_File_Name : String_Access;
151 Binder_Spec_Src_File : String_Access;
152 Binder_Body_Src_File : String_Access;
153 Binder_Ali_File : String_Access;
154 Binder_Obj_File : String_Access;
156 Tname : Temp_File_Name;
157 Tname_FD : File_Descriptor := Invalid_FD;
158 -- Temporary file used by linker to pass list of object files on
159 -- certain systems with limitations on size of arguments.
161 Debug_Flag_Present : Boolean := False;
162 Verbose_Mode : Boolean := False;
163 Very_Verbose_Mode : Boolean := False;
165 Standard_Gcc : Boolean := True;
167 Compile_Bind_File : Boolean := True;
168 -- Set to False if bind file is not to be compiled
170 Create_Map_File : Boolean := False;
171 -- Set to True by switch -M. The map file name is derived from
172 -- the ALI file name (mainprog.ali => mainprog.map).
174 Object_List_File_Supported : Boolean;
175 for Object_List_File_Supported'Size use Character'Size;
177 (C, Object_List_File_Supported, "__gnat_objlist_file_supported");
178 -- Predicate indicating whether the linker has an option whereby the
179 -- names of object files can be passed to the linker in a file.
181 Object_File_Option_Ptr : Interfaces.C.Strings.chars_ptr;
182 pragma Import (C, Object_File_Option_Ptr, "__gnat_object_file_option");
183 -- Pointer to a string representing the linker option which specifies
184 -- the response file.
186 Object_File_Option : constant String := Value (Object_File_Option_Ptr);
187 -- The linker option which specifies the response file as a string
189 Using_GNU_response_file : constant Boolean :=
190 Object_File_Option'Length > 0
191 and then Object_File_Option (Object_File_Option'Last) = '@';
192 -- Whether a GNU response file is used
194 Object_List_File_Required : Boolean := False;
195 -- Set to True to force generation of a response file
197 Shared_Libgcc_Default : Character;
198 for Shared_Libgcc_Default'Size use Character'Size;
200 (C, Shared_Libgcc_Default, "__gnat_shared_libgcc_default");
201 -- Indicates wether libgcc should be statically linked (use 'T') or
202 -- dynamically linked (use 'H') by default.
204 function Base_Name (File_Name : String) return String;
205 -- Return just the file name part without the extension (if present)
207 procedure Check_Existing_Executable (File_Name : String);
208 -- Delete any existing executable to avoid accidentally updating the target
209 -- of a symbolic link, but produce a Fatail_Error if File_Name matches any
210 -- of the source file names. This avoids overwriting of extensionless
211 -- source files by accident on systems where executables do not have
214 procedure Delete (Name : String);
215 -- Wrapper to unlink as status is ignored by this application
217 procedure Error_Msg (Message : String);
218 -- Output the error or warning Message
220 procedure Exit_With_Error (Error : String);
221 -- Output Error and exit program with a fatal condition
223 procedure Process_Args;
224 -- Go through all the arguments and build option tables
226 procedure Process_Binder_File (Name : String);
227 -- Reads the binder file and extracts linker arguments
232 procedure Write_Header;
233 -- Show user the program name, version and copyright
235 procedure Write_Usage;
236 -- Show user the program options
242 function Base_Name (File_Name : String) return String is
247 Findex1 := File_Name'First;
249 -- The file might be specified by a full path name. However,
250 -- we want the path to be stripped away.
252 for J in reverse File_Name'Range loop
253 if Is_Directory_Separator (File_Name (J)) then
259 Findex2 := File_Name'Last;
260 while Findex2 > Findex1
261 and then File_Name (Findex2) /= '.'
263 Findex2 := Findex2 - 1;
266 if Findex2 = Findex1 then
267 Findex2 := File_Name'Last + 1;
270 return File_Name (Findex1 .. Findex2 - 1);
273 -------------------------------
274 -- Check_Existing_Executable --
275 -------------------------------
277 procedure Check_Existing_Executable (File_Name : String) is
278 Ename : String := File_Name;
279 Efile : File_Name_Type;
280 Sfile : File_Name_Type;
283 Canonical_Case_File_Name (Ename);
285 Add_Str_To_Name_Buffer (Ename);
288 for J in Units.Table'First .. Units.Last loop
289 Sfile := Units.Table (J).Sfile;
290 if Sfile = Efile then
291 Exit_With_Error ("executable name """ & File_Name & """ matches "
292 & "source file name """ & Get_Name_String (Sfile) & """");
297 end Check_Existing_Executable;
303 procedure Delete (Name : String) is
305 pragma Unreferenced (Status);
307 Status := unlink (Name'Address);
308 -- Is it really right to ignore an error here ???
315 procedure Error_Msg (Message : String) is
317 Write_Str (Base_Name (Command_Name));
323 ---------------------
324 -- Exit_With_Error --
325 ---------------------
327 procedure Exit_With_Error (Error : String) is
330 Exit_Program (E_Fatal);
337 procedure Process_Args is
339 Skip_Next : Boolean := False;
340 -- Set to true if the next argument is to be added into the list of
341 -- linker's argument without parsing it.
343 procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
345 -- Start of processing for Process_Args
348 -- First, check for --version and --help
350 Check_Version_And_Help ("GNATLINK", "1995");
352 -- Loop through arguments of gnatlink command
356 exit when Next_Arg > Argument_Count;
358 Process_One_Arg : declare
359 Arg : constant String := Argument (Next_Arg);
362 -- Case of argument which is a switch
364 -- We definitely need section by section comments here ???
368 -- This argument must not be parsed, just add it to the
369 -- list of linker's options.
373 Linker_Options.Increment_Last;
374 Linker_Options.Table (Linker_Options.Last) :=
377 elsif Arg'Length /= 0 and then Arg (1) = '-' then
378 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
380 ("invalid switch: """ & Arg & """ (gnat not needed here)");
383 if Arg = "-Xlinker" then
385 -- Next argument should be sent directly to the linker.
386 -- We do not want to parse it here.
390 Linker_Options.Increment_Last;
391 Linker_Options.Table (Linker_Options.Last) :=
395 and then (Arg'Length < 5 or else Arg (2 .. 5) /= "gnat")
397 Debug_Flag_Present := True;
399 Linker_Options.Increment_Last;
400 Linker_Options.Table (Linker_Options.Last) :=
403 Binder_Options.Increment_Last;
404 Binder_Options.Table (Binder_Options.Last) :=
405 Linker_Options.Table (Linker_Options.Last);
407 elsif Arg'Length >= 3 and then Arg (2) = 'M' then
409 Switches : String_List_Access;
412 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
414 if Switches /= null then
415 for J in Switches'Range loop
416 Linker_Options.Increment_Last;
417 Linker_Options.Table (Linker_Options.Last) :=
423 elsif Arg'Length = 2 then
426 Linker_Options.Increment_Last;
427 Linker_Options.Table (Linker_Options.Last) :=
430 Binder_Options.Increment_Last;
431 Binder_Options.Table (Binder_Options.Last) :=
432 Linker_Options.Table (Linker_Options.Last);
434 Next_Arg := Next_Arg + 1;
436 if Next_Arg > Argument_Count then
437 Exit_With_Error ("Missing argument for -b");
440 Get_Machine_Name : declare
441 Name_Arg : constant String_Access :=
442 new String'(Argument (Next_Arg));
445 Linker_Options.Increment_Last;
446 Linker_Options.Table (Linker_Options.Last) :=
449 Binder_Options.Increment_Last;
450 Binder_Options.Table (Binder_Options.Last) :=
453 end Get_Machine_Name;
456 if Object_List_File_Supported then
457 Object_List_File_Required := True;
460 ("Object list file not supported on this target");
464 Create_Map_File := True;
467 Compile_Bind_File := False;
470 Next_Arg := Next_Arg + 1;
472 if Next_Arg > Argument_Count then
473 Exit_With_Error ("Missing argument for -o");
477 new String'(Executable_Name
478 (Argument (Next_Arg),
479 Only_If_No_Suffix => True));
482 Opt.CodePeer_Mode := True;
485 Opt.Run_Path_Option := False;
489 -- Support "double" verbose mode. Second -v
490 -- gets sent to the linker and binder phases.
493 Very_Verbose_Mode := True;
495 Linker_Options.Increment_Last;
496 Linker_Options.Table (Linker_Options.Last) :=
499 Binder_Options.Increment_Last;
500 Binder_Options.Table (Binder_Options.Last) :=
501 Linker_Options.Table (Linker_Options.Last);
504 Verbose_Mode := True;
509 Linker_Options.Increment_Last;
510 Linker_Options.Table (Linker_Options.Last) :=
515 elsif Arg (2) = 'B' then
516 Linker_Options.Increment_Last;
517 Linker_Options.Table (Linker_Options.Last) :=
520 Binder_Options.Increment_Last;
521 Binder_Options.Table (Binder_Options.Last) :=
522 Linker_Options.Table (Linker_Options.Last);
524 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
525 if Arg'Length = 7 then
526 Exit_With_Error ("Missing argument for --LINK=");
530 System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last));
532 if Linker_Path = null then
534 ("Could not locate linker: " & Arg (8 .. Arg'Last));
537 elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
539 Program_Args : constant Argument_List_Access :=
540 Argument_String_To_List
541 (Arg (7 .. Arg'Last));
544 if Program_Args.all (1).all /= Gcc.all then
545 Gcc := new String'(Program_Args.all (1).all);
546 Standard_Gcc := False;
549 -- Set appropriate flags for switches passed
551 for J in 2 .. Program_Args.all'Last loop
553 Arg : constant String := Program_Args.all (J).all;
554 AF : constant Integer := Arg'First;
557 if Arg'Length /= 0 and then Arg (AF) = '-' then
558 if Arg (AF + 1) = 'g'
559 and then (Arg'Length = 2
560 or else Arg (AF + 2) in '0' .. '3'
561 or else Arg (AF + 2 .. Arg'Last) = "coff")
563 Debug_Flag_Present := True;
567 -- Add directory to source search dirs so that
568 -- Get_Target_Parameters can find system.ads
570 if Arg (AF .. AF + 1) = "-I"
571 and then Arg'Length > 2
573 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
576 -- Pass to gcc for compiling binder generated file
577 -- No use passing libraries, it will just generate
580 if not (Arg (AF .. AF + 1) = "-l"
581 or else Arg (AF .. AF + 1) = "-L")
583 Binder_Options.Increment_Last;
584 Binder_Options.Table (Binder_Options.Last) :=
588 -- Pass to gcc for linking program
590 Gcc_Linker_Options.Increment_Last;
591 Gcc_Linker_Options.Table
592 (Gcc_Linker_Options.Last) := new String'(Arg);
597 -- Send all multi-character switches not recognized as
598 -- a special case by gnatlink to the linker/loader stage.
601 Linker_Options.Increment_Last;
602 Linker_Options.Table (Linker_Options.Last) :=
606 -- Here if argument is a file name rather than a switch
609 -- If explicit ali file, capture it
612 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
614 if Ali_File_Name = null then
615 Ali_File_Name := new String'(Arg);
617 Exit_With_Error ("cannot handle more than one ALI file");
620 -- If target object file, record object file
622 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
625 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
626 = Get_Target_Object_Suffix.all
628 Linker_Objects.Increment_Last;
629 Linker_Objects.Table (Linker_Objects.Last) :=
632 -- If host object file, record object file
633 -- e.g. accept foo.o as well as foo.obj on VMS target
635 elsif Arg'Length > Get_Object_Suffix.all'Length
637 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
638 = Get_Object_Suffix.all
640 Linker_Objects.Increment_Last;
641 Linker_Objects.Table (Linker_Objects.Last) :=
644 -- If corresponding ali file exists, capture it
646 elsif Ali_File_Name = null
647 and then Is_Regular_File (Arg & ".ali")
649 Ali_File_Name := new String'(Arg & ".ali");
651 -- Otherwise assume this is a linker options entry, but
652 -- see below for interesting adjustment to this assumption.
655 Linker_Options.Increment_Last;
656 Linker_Options.Table (Linker_Options.Last) :=
662 Next_Arg := Next_Arg + 1;
665 -- Compile the bind file with warnings suppressed, because
666 -- otherwise the with of the main program may cause junk warnings.
668 Binder_Options.Increment_Last;
669 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
671 -- If we did not get an ali file at all, and we had at least one
672 -- linker option, then assume that was the intended ali file after
673 -- all, so that we get a nicer message later on.
675 if Ali_File_Name = null
676 and then Linker_Options.Last >= Linker_Options.First
679 new String'(Linker_Options.Table (Linker_Options.First).all &
684 -------------------------
685 -- Process_Binder_File --
686 -------------------------
688 procedure Process_Binder_File (Name : String) is
690 -- Binder file's descriptor
692 Link_Bytes : Integer := 0;
693 -- Projected number of bytes for the linker command line
696 pragma Import (C, Link_Max, "__gnat_link_max");
697 -- Maximum number of bytes on the command line supported by the OS
698 -- linker. Passed this limit the response file mechanism must be used
701 Next_Line : String (1 .. 1000);
702 -- Current line value
706 -- Current line slice (the slice does not contain line terminator)
709 -- Current line last character for shared libraries (without version)
711 Objs_Begin : Integer := 0;
712 -- First object file index in Linker_Objects table
714 Objs_End : Integer := 0;
715 -- Last object file index in Linker_Objects table
718 pragma Warnings (Off, Status);
719 -- Used for various Interfaces.C_Streams calls
721 Closing_Status : Boolean;
722 pragma Warnings (Off, Closing_Status);
725 GNAT_Static : Boolean := False;
726 -- Save state of -static option
728 GNAT_Shared : Boolean := False;
729 -- Save state of -shared option
731 Xlinker_Was_Previous : Boolean := False;
732 -- Indicate that "-Xlinker" was the option preceding the current
733 -- option. If True, then the current option is never suppressed.
737 -- These data items are used to store current binder file context.
738 -- The context is composed of the file descriptor position and the
739 -- current line together with the slice indexes (first and last
740 -- position) for this line. The rollback data are used by the
741 -- Store_File_Context and Rollback_File_Context routines below.
742 -- The file context mechanism interact only with the Get_Next_Line
743 -- call. For example:
745 -- Store_File_Context;
747 -- Rollback_File_Context;
750 -- Both Get_Next_Line calls above will read the exact same data from
751 -- the file. In other words, Next_Line, Nfirst and Nlast variables
752 -- will be set with the exact same values.
754 RB_File_Pos : long; -- File position
755 RB_Next_Line : String (1 .. 1000); -- Current line content
756 RB_Nlast : Integer; -- Slice last index
757 RB_Nfirst : Integer; -- Slice first index
759 Run_Path_Option_Ptr : Interfaces.C.Strings.chars_ptr;
760 pragma Import (C, Run_Path_Option_Ptr, "__gnat_run_path_option");
761 -- Pointer to string representing the native linker option which
762 -- specifies the path where the dynamic loader should find shared
763 -- libraries. Equal to null string if this system doesn't support it.
765 Libgcc_Subdir_Ptr : Interfaces.C.Strings.chars_ptr;
766 pragma Import (C, Libgcc_Subdir_Ptr, "__gnat_default_libgcc_subdir");
767 -- Pointer to string indicating the installation subdirectory where
768 -- a default shared libgcc might be found.
770 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
772 (C, Object_Library_Ext_Ptr, "__gnat_object_library_extension");
773 -- Pointer to string specifying the default extension for
774 -- object libraries, e.g. Unix uses ".a", VMS uses ".olb".
776 Separate_Run_Path_Options : Boolean;
777 for Separate_Run_Path_Options'Size use Character'Size;
779 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
780 -- Whether separate rpath options should be emitted for each directory
782 procedure Get_Next_Line;
783 -- Read the next line from the binder file without the line
786 function Index (S, Pattern : String) return Natural;
787 -- Return the last occurrence of Pattern in S, or 0 if none
789 function Is_Option_Present (Opt : String) return Boolean;
790 -- Return true if the option Opt is already present in
791 -- Linker_Options table.
793 procedure Store_File_Context;
794 -- Store current file context, Fd position and current line data.
795 -- The file context is stored into the rollback data above (RB_*).
796 -- Store_File_Context can be called at any time, only the last call
797 -- will be used (i.e. this routine overwrites the file context).
799 procedure Rollback_File_Context;
800 -- Restore file context from rollback data. This routine must be called
801 -- after Store_File_Context. The binder file context will be restored
802 -- with the data stored by the last Store_File_Context call.
804 procedure Write_RF (S : String);
805 -- Write a string to the response file and check if it was successful.
806 -- Fail the program if it was not successful (disk full).
812 procedure Get_Next_Line is
816 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
818 if Fchars = System.Null_Address then
819 Exit_With_Error ("Error reading binder output");
822 Nfirst := Next_Line'First;
824 while Nlast <= Next_Line'Last
825 and then Next_Line (Nlast) /= ASCII.LF
826 and then Next_Line (Nlast) /= ASCII.CR
838 function Index (S, Pattern : String) return Natural is
839 Len : constant Natural := Pattern'Length;
842 for J in reverse S'First .. S'Last - Len + 1 loop
843 if Pattern = S (J .. J + Len - 1) then
851 -----------------------
852 -- Is_Option_Present --
853 -----------------------
855 function Is_Option_Present (Opt : String) return Boolean is
857 for I in 1 .. Linker_Options.Last loop
859 if Linker_Options.Table (I).all = Opt then
866 end Is_Option_Present;
868 ---------------------------
869 -- Rollback_File_Context --
870 ---------------------------
872 procedure Rollback_File_Context is
874 Next_Line := RB_Next_Line;
877 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
880 Exit_With_Error ("Error setting file position");
882 end Rollback_File_Context;
884 ------------------------
885 -- Store_File_Context --
886 ------------------------
888 procedure Store_File_Context is
889 use type System.CRTL.long;
891 RB_Next_Line := Next_Line;
894 RB_File_Pos := ftell (Fd);
896 if RB_File_Pos = -1 then
897 Exit_With_Error ("Error getting file position");
899 end Store_File_Context;
905 procedure Write_RF (S : String) is
906 Success : Boolean := True;
908 -- If a GNU response file is used, space and backslash need to be
909 -- escaped because they are interpreted as a string separator and
910 -- an escape character respectively by the underlying mechanism.
911 -- On the other hand, quote and double-quote are not escaped since
912 -- they are interpreted as string delimiters on both sides.
914 if Using_GNU_response_file then
915 for I in S'Range loop
916 if S (I) = ' ' or else S (I) = '\' then
917 if Write (Tname_FD, ASCII.BACK_SLASH'Address, 1) /= 1 then
922 if Write (Tname_FD, S (I)'Address, 1) /= 1 then
927 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
932 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
937 Exit_With_Error ("Error generating response file: disk full");
941 -- Start of processing for Process_Binder_File
944 Fd := fopen (Name'Address, Read_Mode'Address);
946 if Fd = NULL_Stream then
947 Exit_With_Error ("Failed to open binder output");
950 -- Skip up to the Begin Info line
954 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
960 -- Go to end when end line is reached (this will happen in
961 -- High_Integrity_Mode where no -L switches are generated)
963 exit when Next_Line (Nfirst .. Nlast) = End_Info;
965 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
968 -- Go to next section when switches are reached
970 exit when Next_Line (1) = '-';
972 -- Otherwise we have another object file to collect
974 Linker_Objects.Increment_Last;
976 -- Mark the positions of first and last object files in case
977 -- they need to be placed with a named file on systems having
978 -- linker line limitations.
980 if Objs_Begin = 0 then
981 Objs_Begin := Linker_Objects.Last;
984 Linker_Objects.Table (Linker_Objects.Last) :=
985 new String'(Next_Line (Nfirst .. Nlast));
987 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
988 -- Nlast - Nfirst + 1, for the size, plus one for the space between
992 Objs_End := Linker_Objects.Last;
994 -- Continue to compute the Link_Bytes, the linker options are part of
995 -- command line length.
999 while Next_Line (Nfirst .. Nlast) /= End_Info loop
1000 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
1004 Rollback_File_Context;
1006 -- On systems that have limitations on handling very long linker lines
1007 -- we make use of the system linker option which takes a list of object
1008 -- file names from a file instead of the command line itself. What we do
1009 -- is to replace the list of object files by the special linker option
1010 -- which then reads the object file list from a file instead. The option
1011 -- to read from a file instead of the command line is only triggered if
1012 -- a conservative threshold is passed.
1014 if Object_List_File_Required
1015 or else (Object_List_File_Supported
1016 and then Link_Bytes > Link_Max)
1018 -- Create a temporary file containing the Ada user object files
1019 -- needed by the link. This list is taken from the bind file
1020 -- and is output one object per line for maximal compatibility with
1021 -- linkers supporting this option.
1023 Create_Temp_File (Tname_FD, Tname);
1025 -- ??? File descriptor should be checked to not be Invalid_FD.
1026 -- ??? Status of Write and Close operations should be checked, and
1027 -- failure should occur if a status is wrong.
1029 for J in Objs_Begin .. Objs_End loop
1030 Write_RF (Linker_Objects.Table (J).all);
1032 Response_File_Objects.Increment_Last;
1033 Response_File_Objects.Table (Response_File_Objects.Last) :=
1034 Linker_Objects.Table (J);
1037 Close (Tname_FD, Closing_Status);
1039 -- Add the special objects list file option together with the name
1040 -- of the temporary file (removing the null character) to the objects
1043 Linker_Objects.Table (Objs_Begin) :=
1044 new String'(Object_File_Option &
1045 Tname (Tname'First .. Tname'Last - 1));
1047 -- The slots containing these object file names are then removed
1048 -- from the objects table so they do not appear in the link. They
1049 -- are removed by moving up the linker options and non-Ada object
1050 -- files appearing after the Ada object list in the table.
1056 N := Objs_End - Objs_Begin + 1;
1058 for J in Objs_End + 1 .. Linker_Objects.Last loop
1059 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
1062 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
1066 -- Process switches and options
1068 if Next_Line (Nfirst .. Nlast) /= End_Info then
1069 Xlinker_Was_Previous := False;
1072 if Xlinker_Was_Previous
1073 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
1075 Linker_Options.Increment_Last;
1076 Linker_Options.Table (Linker_Options.Last) :=
1077 new String'(Next_Line (Nfirst .. Nlast));
1079 elsif Next_Line (Nfirst .. Nlast) = "-static" then
1080 GNAT_Static := True;
1082 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
1083 GNAT_Shared := True;
1085 -- Add binder options only if not already set on the command
1086 -- line. This rule is a way to control the linker options order.
1088 -- The following test needs comments, why is it VMS specific.
1089 -- The above comment looks out of date ???
1091 elsif not (OpenVMS_On_Target
1093 Is_Option_Present (Next_Line (Nfirst .. Nlast)))
1095 if Nlast > Nfirst + 2 and then
1096 Next_Line (Nfirst .. Nfirst + 1) = "-L"
1098 -- Construct a library search path for use later
1099 -- to locate static gnatlib libraries.
1101 if Libpath.Last > 1 then
1102 Libpath.Increment_Last;
1103 Libpath.Table (Libpath.Last) := Path_Separator;
1106 for I in Nfirst + 2 .. Nlast loop
1107 Libpath.Increment_Last;
1108 Libpath.Table (Libpath.Last) := Next_Line (I);
1111 Linker_Options.Increment_Last;
1113 Linker_Options.Table (Linker_Options.Last) :=
1114 new String'(Next_Line (Nfirst .. Nlast));
1116 elsif Next_Line (Nfirst .. Nlast) = "-ldecgnat"
1117 or else Next_Line (Nfirst .. Nlast) = "-lgnarl"
1118 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
1120 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
1121 Shared_Lib ("gnarl")
1123 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
1126 -- If it is a shared library, remove the library version.
1127 -- We will be looking for the static version of the library
1128 -- as it is in the same directory as the shared version.
1130 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast)
1133 -- Set Last to point to last character before the
1136 Last := Nlast - Library_Version'Length - 1;
1141 -- Given a Gnat standard library, search the library path to
1142 -- find the library location.
1144 -- Shouldn't we abstract a proc here, we are getting awfully
1145 -- heavily nested ???
1148 File_Path : String_Access;
1150 Object_Lib_Extension : constant String :=
1151 Value (Object_Library_Ext_Ptr);
1153 File_Name : constant String := "lib" &
1154 Next_Line (Nfirst + 2 .. Last) &
1155 Object_Lib_Extension;
1157 Run_Path_Opt : constant String :=
1158 Value (Run_Path_Option_Ptr);
1160 GCC_Index : Natural;
1161 Run_Path_Opt_Index : Natural := 0;
1165 Locate_Regular_File (File_Name,
1166 String (Libpath.Table (1 .. Libpath.Last)));
1168 if File_Path /= null then
1171 -- If static gnatlib found, explicitly
1172 -- specify to overcome possible linker
1173 -- default usage of shared version.
1175 Linker_Options.Increment_Last;
1177 Linker_Options.Table (Linker_Options.Last) :=
1178 new String'(File_Path.all);
1180 elsif GNAT_Shared then
1181 if Opt.Run_Path_Option then
1183 -- If shared gnatlib desired, add the
1184 -- appropriate system specific switch
1185 -- so that it can be located at runtime.
1187 if Run_Path_Opt'Length /= 0 then
1189 -- Output the system specific linker command
1190 -- that allows the image activator to find
1191 -- the shared library at runtime. Also add
1192 -- path to find libgcc_s.so, if relevant.
1195 Path : String (1 .. File_Path'Length + 15);
1196 Path_Last : constant Natural :=
1200 Path (1 .. File_Path'Length) :=
1203 -- To find the location of the shared version
1204 -- of libgcc, we look for "gcc-lib" in the
1205 -- path of the library. However, this
1206 -- subdirectory is no longer present in
1207 -- recent versions of GCC. So, we look for
1208 -- the last subdirectory "lib" in the path.
1211 Index (Path (1 .. Path_Last), "gcc-lib");
1213 if GCC_Index /= 0 then
1215 -- The shared version of libgcc is
1216 -- located in the parent directory.
1218 GCC_Index := GCC_Index - 1;
1223 (Path (1 .. Path_Last),
1226 if GCC_Index = 0 then
1228 Index (Path (1 .. Path_Last),
1229 Directory_Separator &
1231 Directory_Separator);
1234 -- If we have found a "lib" subdir in
1235 -- the path to libgnat, the possible
1236 -- shared libgcc of interest by default
1237 -- is in libgcc_subdir at the same
1240 if GCC_Index /= 0 then
1242 Subdir : constant String :=
1243 Value (Libgcc_Subdir_Ptr);
1247 GCC_Index + Subdir'Length) :=
1250 GCC_Index + Subdir'Length;
1255 -- Look for an eventual run_path_option in
1256 -- the linker switches.
1258 if Separate_Run_Path_Options then
1259 Linker_Options.Increment_Last;
1260 Linker_Options.Table
1261 (Linker_Options.Last) :=
1265 (1 .. File_Path'Length
1266 - File_Name'Length));
1268 if GCC_Index /= 0 then
1269 Linker_Options.Increment_Last;
1270 Linker_Options.Table
1271 (Linker_Options.Last) :=
1274 & Path (1 .. GCC_Index));
1279 1 .. Linker_Options.Last
1281 if Linker_Options.Table (J) /= null
1283 Linker_Options.Table (J)'Length
1284 > Run_Path_Opt'Length
1286 Linker_Options.Table (J)
1287 (1 .. Run_Path_Opt'Length) =
1290 -- We have found an already
1291 -- specified run_path_option: we
1292 -- will add to this switch,
1294 -- run_path_option should be
1297 Run_Path_Opt_Index := J;
1302 -- If there is no run_path_option, we
1305 if Run_Path_Opt_Index = 0 then
1306 Linker_Options.Increment_Last;
1309 if GCC_Index = 0 then
1310 if Run_Path_Opt_Index = 0 then
1311 Linker_Options.Table
1312 (Linker_Options.Last) :=
1316 (1 .. File_Path'Length
1317 - File_Name'Length));
1320 Linker_Options.Table
1321 (Run_Path_Opt_Index) :=
1323 (Linker_Options.Table
1324 (Run_Path_Opt_Index).all
1327 (1 .. File_Path'Length
1328 - File_Name'Length));
1332 if Run_Path_Opt_Index = 0 then
1333 Linker_Options.Table
1334 (Linker_Options.Last) :=
1338 (1 .. File_Path'Length
1341 & Path (1 .. GCC_Index));
1344 Linker_Options.Table
1345 (Run_Path_Opt_Index) :=
1347 (Linker_Options.Table
1348 (Run_Path_Opt_Index).all
1351 (1 .. File_Path'Length
1354 & Path (1 .. GCC_Index));
1362 -- Then we add the appropriate -l switch
1364 Linker_Options.Increment_Last;
1365 Linker_Options.Table (Linker_Options.Last) :=
1366 new String'(Next_Line (Nfirst .. Nlast));
1370 -- If gnatlib library not found, then
1371 -- add it anyway in case some other
1372 -- mechanism may find it.
1374 Linker_Options.Increment_Last;
1375 Linker_Options.Table (Linker_Options.Last) :=
1376 new String'(Next_Line (Nfirst .. Nlast));
1380 Linker_Options.Increment_Last;
1381 Linker_Options.Table (Linker_Options.Last) :=
1382 new String'(Next_Line (Nfirst .. Nlast));
1386 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
1389 exit when Next_Line (Nfirst .. Nlast) = End_Info;
1391 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
1396 -- If -shared was specified, invoke gcc with -shared-libgcc
1399 Linker_Options.Increment_Last;
1400 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
1403 Status := fclose (Fd);
1404 end Process_Binder_File;
1412 Write_Str ("Usage: ");
1413 Write_Str (Base_Name (Command_Name));
1414 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
1417 Write_Line (" mainprog.ali the ALI file of the main program");
1420 Display_Usage_Version_And_Help;
1421 Write_Line (" -f Force object file list to be generated");
1422 Write_Line (" -g Compile binder source file with debug information");
1423 Write_Line (" -n Do not compile the binder source file");
1424 Write_Line (" -P Process files for use by CodePeer");
1425 Write_Line (" -R Do not use a run_path_option");
1426 Write_Line (" -v Verbose mode");
1427 Write_Line (" -v -v Very verbose mode");
1429 Write_Line (" -o nam Use 'nam' as the name of the executable");
1430 Write_Line (" -b target Compile the binder source to run on target");
1431 Write_Line (" -Bdir Load compiler executables from dir");
1433 if Is_Supported (Map_File) then
1434 Write_Line (" -Mmap Create map file map");
1435 Write_Line (" -M Create map file mainprog.map");
1438 Write_Line (" --GCC=comp Use comp as the compiler");
1439 Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
1441 Write_Line (" [non-Ada-objects] list of non Ada object files");
1442 Write_Line (" [linker-options] other options for the linker");
1449 procedure Write_Header is
1451 if Verbose_Mode then
1453 Display_Version ("GNATLINK", "1995");
1461 procedure Write_Usage is
1467 -- Start of processing for Gnatlink
1470 -- Add the directory where gnatlink is invoked in front of the path, if
1471 -- gnatlink is invoked with directory information. Only do this if the
1472 -- platform is not VMS, where the notion of path does not really exist.
1474 if not Hostparm.OpenVMS then
1476 Command : constant String := Command_Name;
1479 for Index in reverse Command'Range loop
1480 if Command (Index) = Directory_Separator then
1482 Absolute_Dir : constant String :=
1484 (Command (Command'First .. Index));
1486 PATH : constant String :=
1489 Getenv ("PATH").all;
1492 Setenv ("PATH", PATH);
1503 if Argument_Count = 0
1504 or else (Verbose_Mode and then Argument_Count = 1)
1507 Exit_Program (E_Fatal);
1510 -- Initialize packages to be used
1515 -- We always compile with -c
1517 Binder_Options_From_ALI.Increment_Last;
1518 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1521 if Ali_File_Name = null then
1522 Exit_With_Error ("no ali file given for link");
1525 if not Is_Regular_File (Ali_File_Name.all) then
1526 Exit_With_Error (Ali_File_Name.all & " not found");
1529 -- Read the ALI file of the main subprogram if the binder generated file
1530 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1531 -- back end switches from this ALI file and use these switches to compile
1532 -- the binder generated file
1534 if Compile_Bind_File and then Standard_Gcc then
1536 Name_Len := Ali_File_Name'Length;
1537 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
1541 F : constant File_Name_Type := Name_Find;
1542 T : Text_Buffer_Ptr;
1546 -- Load the ALI file
1548 T := Read_Library_Info (F, True);
1550 -- Read it. Note that we ignore errors, since we only want very
1551 -- limited information from the ali file, and likely a slightly
1552 -- wrong version will be just fine, though in normal operation
1553 -- we don't expect this to happen!
1560 Ignore_Errors => True);
1562 if A /= No_ALI_Id then
1564 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
1565 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
1567 -- Do not compile with the front end switches. However, --RTS
1568 -- is to be dealt with specially because it needs to be passed
1569 -- if the binder-generated file is in Ada and may also be used
1570 -- to drive the linker.
1573 Arg : String_Ptr renames Args.Table (Index);
1575 if not Is_Front_End_Switch (Arg.all) then
1576 Binder_Options_From_ALI.Increment_Last;
1577 Binder_Options_From_ALI.Table
1578 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1580 elsif Arg'Length > 5
1581 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
1583 Binder_Options_From_ALI.Increment_Last;
1584 Binder_Options_From_ALI.Table
1585 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1587 -- Set the RTS_*_Path_Name variables, so that
1588 -- the correct directories will be set when
1589 -- Osint.Add_Default_Search_Dirs will be called later.
1591 Opt.RTS_Src_Path_Name :=
1593 (Arg (Arg'First + 6 .. Arg'Last), Include);
1595 Opt.RTS_Lib_Path_Name :=
1597 (Arg (Arg'First + 6 .. Arg'Last), Objects);
1599 -- GNAT doesn't support the GCC multilib mechanism.
1600 -- This means that, when a multilib switch is used
1601 -- to request a particular compilation mode, the
1602 -- corresponding runtime switch (--RTS) must also be
1603 -- specified. The long-term goal is to fully support the
1604 -- multilib mechanism; however, in the meantime, it is
1605 -- convenient to eliminate the redundancy by keying the
1606 -- compilation mode on a single switch, namely --RTS.
1608 -- Pass -mrtp to the linker if --RTS=rtp was passed
1612 (Arg (Arg'First + 6 .. Arg'First + 8) = "rtp"
1613 or else Arg (Arg'Last - 2 .. Arg'Last) = "rtp")
1615 Linker_Options.Increment_Last;
1616 Linker_Options.Table (Linker_Options.Last) :=
1617 new String'("-mrtp");
1626 -- Get target parameters
1628 Osint.Add_Default_Search_Dirs;
1629 Targparm.Get_Target_Parameters;
1631 if VM_Target /= No_VM then
1633 when JVM_Target => Gcc := new String'("jvm-gnatcompile");
1634 when CLI_Target => Gcc := new String'("dotnet-gnatcompile");
1635 when No_VM => raise Program_Error;
1639 -- Compile the bind file with the following switches:
1641 -- -gnatA stops reading gnat.adc, since we don't know what
1642 -- pragmas would work, and we do not need it anyway.
1644 -- -gnatWb allows brackets coding for wide characters
1646 -- -gnatiw allows wide characters in identifiers. This is needed
1647 -- because bindgen uses brackets encoding for all upper
1648 -- half and wide characters in identifier names.
1650 -- In addition, in CodePeer mode compile with -gnatcC
1652 Binder_Options_From_ALI.Increment_Last;
1653 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1654 new String'("-gnatA");
1655 Binder_Options_From_ALI.Increment_Last;
1656 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1657 new String'("-gnatWb");
1658 Binder_Options_From_ALI.Increment_Last;
1659 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1660 new String'("-gnatiw");
1662 if Opt.CodePeer_Mode then
1663 Binder_Options_From_ALI.Increment_Last;
1664 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1665 new String'("-gnatcC");
1668 -- Locate all the necessary programs and verify required files are present
1670 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1672 if Gcc_Path = null then
1673 Exit_With_Error ("Couldn't locate " & Gcc.all);
1676 if Linker_Path = null then
1677 if VM_Target = CLI_Target then
1678 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld");
1680 if Linker_Path = null then
1681 Exit_With_Error ("Couldn't locate dotnet-ld");
1684 elsif RTX_RTSS_Kernel_Module_On_Target then
1686 -- Use Microsoft linker for RTSS modules
1688 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link");
1690 if Linker_Path = null then
1691 Exit_With_Error ("Couldn't locate link");
1695 Linker_Path := Gcc_Path;
1701 -- If no output name specified, then use the base name of .ali file name
1703 if Output_File_Name = null then
1705 new String'(Base_Name (Ali_File_Name.all)
1706 & Get_Target_Debuggable_Suffix.all);
1709 if RTX_RTSS_Kernel_Module_On_Target then
1710 Linker_Options.Increment_Last;
1711 Linker_Options.Table (Linker_Options.Last) :=
1712 new String'("/OUT:" & Output_File_Name.all);
1715 Linker_Options.Increment_Last;
1716 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
1718 Linker_Options.Increment_Last;
1719 Linker_Options.Table (Linker_Options.Last) :=
1720 new String'(Output_File_Name.all);
1723 Check_Existing_Executable (Output_File_Name.all);
1725 -- Warn if main program is called "test", as that may be a built-in command
1726 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1727 -- will not appear. However, do not warn in the case of a cross compiler.
1729 -- Assume this is a cross tool if the executable name is not gnatlink
1731 if Base_Name (Command_Name) = "gnatlink"
1732 and then Output_File_Name.all = "test"
1734 Error_Msg ("warning: executable name """ & Output_File_Name.all
1735 & """ may conflict with shell command");
1738 -- If -M switch was specified, add the switches to create the map file
1740 if Create_Map_File then
1742 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
1743 Switches : String_List_Access;
1746 Convert (Map_File, Map_Name, Switches);
1748 if Switches /= null then
1749 for J in Switches'Range loop
1750 Linker_Options.Increment_Last;
1751 Linker_Options.Table (Linker_Options.Last) := Switches (J);
1757 -- Perform consistency checks
1759 -- Transform the .ali file name into the binder output file name
1761 Make_Binder_File_Names : declare
1762 Fname : constant String := Base_Name (Ali_File_Name.all);
1763 Fname_Len : Integer := Fname'Length;
1765 function Get_Maximum_File_Name_Length return Integer;
1766 pragma Import (C, Get_Maximum_File_Name_Length,
1767 "__gnat_get_maximum_file_name_length");
1769 Maximum_File_Name_Length : constant Integer :=
1770 Get_Maximum_File_Name_Length;
1772 Bind_File_Prefix : Types.String_Ptr;
1773 -- Contains prefix used for bind files
1778 if OpenVMS_On_Target then
1779 Bind_File_Prefix := new String'("b__");
1781 Bind_File_Prefix := new String'("b~");
1784 -- If the length of the binder file becomes too long due to
1785 -- the addition of the "b?" prefix, then truncate it.
1787 if Maximum_File_Name_Length > 0 then
1789 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1791 Fname_Len := Fname_Len - 1;
1796 Fnam : constant String :=
1797 Bind_File_Prefix.all &
1798 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1801 Binder_Spec_Src_File := new String'(Fnam & ".ads");
1802 Binder_Body_Src_File := new String'(Fnam & ".adb");
1803 Binder_Ali_File := new String'(Fnam & ".ali");
1805 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
1808 if Fname_Len /= Fname'Length then
1809 Binder_Options.Increment_Last;
1810 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1811 Binder_Options.Increment_Last;
1812 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
1814 end Make_Binder_File_Names;
1816 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
1818 -- Compile the binder file. This is fast, so we always do it, unless
1819 -- specifically told not to by the -n switch
1821 if Compile_Bind_File then
1824 Args : Argument_List
1825 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
1828 for J in 1 .. Binder_Options_From_ALI.Last loop
1829 Args (J) := Binder_Options_From_ALI.Table (J);
1832 for J in 1 .. Binder_Options.Last loop
1833 Args (Binder_Options_From_ALI.Last + J) :=
1834 Binder_Options.Table (J);
1837 -- Use the full path of the binder generated source, so that it is
1838 -- guaranteed that the debugger will find this source, even with
1842 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1844 if Verbose_Mode then
1845 Write_Str (Base_Name (Gcc_Path.all));
1847 for J in Args'Range loop
1849 Write_Str (Args (J).all);
1855 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1858 Exit_Program (E_Fatal);
1863 -- In CodePeer mode, there's nothing left to do after the binder file has
1866 if Opt.CodePeer_Mode then
1870 -- Now, actually link the program
1872 -- Skip this step for now on JVM since the Java interpreter will do
1873 -- the actual link at run time. We might consider packing all class files
1874 -- in a .zip file during this step.
1876 if VM_Target /= JVM_Target then
1878 Num_Args : Natural :=
1879 (Linker_Options.Last - Linker_Options.First + 1) +
1880 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1881 (Linker_Objects.Last - Linker_Objects.First + 1);
1882 Stack_Op : Boolean := False;
1883 IDENT_Op : Boolean := False;
1886 if AAMP_On_Target then
1888 -- Remove extraneous flags not relevant for AAMP
1890 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1891 if Linker_Options.Table (J)'Length = 0
1892 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1893 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1894 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1895 or else Linker_Options.Table (J) (1 .. 2) = "-g"
1897 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1898 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1899 Linker_Options.Decrement_Last;
1900 Num_Args := Num_Args - 1;
1904 elsif RTX_RTSS_Kernel_Module_On_Target then
1906 -- Remove flags not relevant for Microsoft linker and adapt some
1909 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1911 -- Remove flags that are not accepted
1913 if Linker_Options.Table (J)'Length = 0
1914 or else Linker_Options.Table (J) (1 .. 2) = "-l"
1915 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1916 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1917 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1918 or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker"
1919 or else Linker_Options.Table (J) (1 .. 9) = "-mthreads"
1921 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1922 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1923 Linker_Options.Decrement_Last;
1924 Num_Args := Num_Args - 1;
1926 -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by
1928 elsif Linker_Options.Table (J) (1 .. 2) = "-L" then
1930 Libpath_Option : constant String_Access := new String'
1932 Linker_Options.Table (J)
1933 (3 .. Linker_Options.Table (J).all'Last));
1935 for Index in 10 .. Libpath_Option'Last loop
1936 if Libpath_Option (Index) = '/' then
1937 Libpath_Option (Index) := '\';
1941 Linker_Options.Table (J) := Libpath_Option;
1944 -- Replace "-g" by "/DEBUG"
1945 elsif Linker_Options.Table (J) (1 .. 2) = "-g" then
1946 Linker_Options.Table (J) := new String'("/DEBUG");
1948 -- Replace "-o" by "/OUT:"
1949 elsif Linker_Options.Table (J) (1 .. 2) = "-o" then
1950 Linker_Options.Table (J + 1) := new String'
1951 ("/OUT:" & Linker_Options.Table (J + 1).all);
1953 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1954 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1955 Linker_Options.Decrement_Last;
1956 Num_Args := Num_Args - 1;
1958 -- Replace "--stack=" by "/STACK:"
1959 elsif Linker_Options.Table (J) (1 .. 8) = "--stack=" then
1960 Linker_Options.Table (J) := new String'
1962 Linker_Options.Table (J)
1963 (9 .. Linker_Options.Table (J).all'Last));
1965 -- Replace "-v" by its counterpart "/VERBOSE"
1966 elsif Linker_Options.Table (J) (1 .. 2) = "-v" then
1967 Linker_Options.Table (J) := new String'("/VERBOSE");
1971 -- Add some required flags to create RTSS modules
1974 Flags_For_Linker : constant array (1 .. 17) of String_Access :=
1975 (new String'("/NODEFAULTLIB"),
1976 new String'("/INCREMENTAL:NO"),
1977 new String'("/NOLOGO"),
1978 new String'("/DRIVER"),
1979 new String'("/ALIGN:0x20"),
1980 new String'("/SUBSYSTEM:NATIVE"),
1981 new String'("/ENTRY:_RtapiProcessEntryCRT@8"),
1982 new String'("/RELEASE"),
1983 new String'("startupCRT.obj"),
1984 new String'("rtxlibcmt.lib"),
1985 new String'("oldnames.lib"),
1986 new String'("rtapi_rtss.lib"),
1987 new String'("Rtx_Rtss.lib"),
1988 new String'("libkernel32.a"),
1989 new String'("libws2_32.a"),
1990 new String'("libmswsock.a"),
1991 new String'("libadvapi32.a"));
1992 -- These flags need to be passed to Microsoft linker. They
1993 -- come from the RTX documentation.
1995 Gcc_Lib_Path : constant String_Access := new String'
1996 ("/LIBPATH:" & Include_Dir_Default_Prefix & "\..\");
1997 -- Place to look for gcc related libraries, such as libgcc
2000 -- Replace UNIX "/" by Windows "\" in the path
2002 for Index in 10 .. Gcc_Lib_Path.all'Last loop
2003 if Gcc_Lib_Path (Index) = '/' then
2004 Gcc_Lib_Path (Index) := '\';
2008 Linker_Options.Increment_Last;
2009 Linker_Options.Table (Linker_Options.Last) := Gcc_Lib_Path;
2010 Num_Args := Num_Args + 1;
2012 for Index in Flags_For_Linker'Range loop
2013 Linker_Options.Increment_Last;
2014 Linker_Options.Table (Linker_Options.Last) :=
2015 Flags_For_Linker (Index);
2016 Num_Args := Num_Args + 1;
2021 -- Remove duplicate stack size setting from the Linker_Options
2022 -- table. The stack setting option "-Xlinker --stack=R,C" can be
2023 -- found in one line when set by a pragma Linker_Options or in two
2024 -- lines ("-Xlinker" then "--stack=R,C") when set on the command
2025 -- line. We also check for the "-Wl,--stack=R" style option.
2027 -- We must remove the second stack setting option instance
2028 -- because the one on the command line will always be the first
2029 -- one. And any subsequent stack setting option will overwrite the
2030 -- previous one. This is done especially for GNAT/NT where we set
2031 -- the stack size for tasking programs by a pragma in the NT
2032 -- specific tasking package System.Task_Primitives.Operations.
2034 -- Note: This is not a FOR loop that runs from Linker_Options.First
2035 -- to Linker_Options.Last, since operations within the loop can
2036 -- modify the length of the table.
2038 Clean_Link_Option_Set : declare
2039 J : Natural := Linker_Options.First;
2040 Shared_Libgcc_Seen : Boolean := False;
2043 while J <= Linker_Options.Last loop
2045 if Linker_Options.Table (J).all = "-Xlinker"
2046 and then J < Linker_Options.Last
2047 and then Linker_Options.Table (J + 1)'Length > 8
2048 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
2051 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
2052 Linker_Options.Table (J + 2 .. Linker_Options.Last);
2053 Linker_Options.Decrement_Last;
2054 Linker_Options.Decrement_Last;
2055 Num_Args := Num_Args - 2;
2062 -- Remove duplicate -shared-libgcc switch
2064 if Linker_Options.Table (J).all = Shared_Libgcc_String then
2065 if Shared_Libgcc_Seen then
2066 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2067 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2068 Linker_Options.Decrement_Last;
2069 Num_Args := Num_Args - 1;
2072 Shared_Libgcc_Seen := True;
2076 -- Here we just check for a canonical form that matches the
2077 -- pragma Linker_Options set in the NT runtime.
2079 if (Linker_Options.Table (J)'Length > 17
2080 and then Linker_Options.Table (J) (1 .. 17)
2081 = "-Xlinker --stack=")
2083 (Linker_Options.Table (J)'Length > 12
2084 and then Linker_Options.Table (J) (1 .. 12)
2088 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2089 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2090 Linker_Options.Decrement_Last;
2091 Num_Args := Num_Args - 1;
2098 -- Remove duplicate IDENTIFICATION directives (VMS)
2100 if Linker_Options.Table (J)'Length > 29
2101 and then Linker_Options.Table (J) (1 .. 30) =
2102 "--for-linker=--identification="
2105 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2106 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2107 Linker_Options.Decrement_Last;
2108 Num_Args := Num_Args - 1;
2118 if Linker_Path = Gcc_Path and then VM_Target = No_VM then
2120 -- For systems where the default is to link statically with
2121 -- libgcc, if gcc is not called with -shared-libgcc, call it
2122 -- with -static-libgcc, as there are some platforms where one
2123 -- of these two switches is compulsory to link.
2125 if Shared_Libgcc_Default = 'T'
2126 and then not Shared_Libgcc_Seen
2128 Linker_Options.Increment_Last;
2129 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
2130 Num_Args := Num_Args + 1;
2133 elsif RTX_RTSS_Kernel_Module_On_Target then
2135 -- Force the use of the static libgcc for RTSS modules
2137 Linker_Options.Increment_Last;
2138 Linker_Options.Table (Linker_Options.Last) :=
2139 new String'("libgcc.a");
2140 Num_Args := Num_Args + 1;
2143 end Clean_Link_Option_Set;
2145 -- Prepare arguments for call to linker
2147 Call_Linker : declare
2149 Args : Argument_List (1 .. Num_Args + 1);
2150 Index : Integer := Args'First;
2153 Args (Index) := Binder_Obj_File;
2155 -- Add the object files and any -largs libraries
2157 for J in Linker_Objects.First .. Linker_Objects.Last loop
2159 Args (Index) := Linker_Objects.Table (J);
2162 -- Add the linker options from the binder file
2164 for J in Linker_Options.First .. Linker_Options.Last loop
2166 Args (Index) := Linker_Options.Table (J);
2169 -- Finally add the libraries from the --GCC= switch
2171 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2173 Args (Index) := Gcc_Linker_Options.Table (J);
2176 if Verbose_Mode then
2177 Write_Str (Linker_Path.all);
2179 for J in Args'Range loop
2181 Write_Str (Args (J).all);
2186 -- If we are on very verbose mode (-v -v) and a response file
2187 -- is used we display its content.
2189 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2191 Write_Str ("Response file (" &
2192 Tname (Tname'First .. Tname'Last - 1) &
2197 Response_File_Objects.First ..
2198 Response_File_Objects.Last
2200 Write_Str (Response_File_Objects.Table (J).all);
2208 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2211 -- Delete the temporary file used in conjunction with linking
2212 -- if one was created. See Process_Bind_File for details.
2214 if Tname_FD /= Invalid_FD then
2219 Error_Msg ("error when calling " & Linker_Path.all);
2220 Exit_Program (E_Fatal);
2226 -- Only keep the binder output file and it's associated object
2227 -- file if compiling with the -g option. These files are only
2228 -- useful if debugging.
2230 if not Debug_Flag_Present then
2231 Delete (Binder_Ali_File.all & ASCII.NUL);
2232 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2233 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2235 if VM_Target = No_VM then
2236 Delete (Binder_Obj_File.all & ASCII.NUL);
2240 Exit_Program (E_Success);
2244 Write_Line (Exception_Information (X));
2245 Exit_With_Error ("INTERNAL ERROR. Please report");