1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2013, 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 Base_Command_Name
: String_Access
;
158 Tname
: Temp_File_Name
;
159 Tname_FD
: File_Descriptor
:= Invalid_FD
;
160 -- Temporary file used by linker to pass list of object files on
161 -- certain systems with limitations on size of arguments.
163 Debug_Flag_Present
: Boolean := False;
164 Verbose_Mode
: Boolean := False;
165 Very_Verbose_Mode
: Boolean := False;
167 Standard_Gcc
: Boolean := True;
169 Compile_Bind_File
: Boolean := True;
170 -- Set to False if bind file is not to be compiled
172 Create_Map_File
: Boolean := False;
173 -- Set to True by switch -M. The map file name is derived from
174 -- the ALI file name (mainprog.ali => mainprog.map).
176 Object_List_File_Supported
: Boolean;
177 for Object_List_File_Supported
'Size use Character'Size;
179 (C
, Object_List_File_Supported
, "__gnat_objlist_file_supported");
180 -- Predicate indicating whether the linker has an option whereby the
181 -- names of object files can be passed to the linker in a file.
183 Object_File_Option_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
184 pragma Import
(C
, Object_File_Option_Ptr
, "__gnat_object_file_option");
185 -- Pointer to a string representing the linker option which specifies
186 -- the response file.
188 Object_File_Option
: constant String := Value
(Object_File_Option_Ptr
);
189 -- The linker option which specifies the response file as a string
191 Using_GNU_response_file
: constant Boolean :=
192 Object_File_Option
'Length > 0
193 and then Object_File_Option
(Object_File_Option
'Last) = '@';
194 -- Whether a GNU response file is used
196 Object_List_File_Required
: Boolean := False;
197 -- Set to True to force generation of a response file
199 Shared_Libgcc_Default
: Character;
200 for Shared_Libgcc_Default
'Size use Character'Size;
202 (C
, Shared_Libgcc_Default
, "__gnat_shared_libgcc_default");
203 -- Indicates wether libgcc should be statically linked (use 'T') or
204 -- dynamically linked (use 'H') by default.
206 function Base_Name
(File_Name
: String) return String;
207 -- Return just the file name part without the extension (if present)
209 procedure Check_Existing_Executable
(File_Name
: String);
210 -- Delete any existing executable to avoid accidentally updating the target
211 -- of a symbolic link, but produce a Fatail_Error if File_Name matches any
212 -- of the source file names. This avoids overwriting of extensionless
213 -- source files by accident on systems where executables do not have
216 procedure Delete
(Name
: String);
217 -- Wrapper to unlink as status is ignored by this application
219 procedure Error_Msg
(Message
: String);
220 -- Output the error or warning Message
222 procedure Exit_With_Error
(Error
: String);
223 -- Output Error and exit program with a fatal condition
225 procedure Process_Args
;
226 -- Go through all the arguments and build option tables
228 procedure Process_Binder_File
(Name
: String);
229 -- Reads the binder file and extracts linker arguments
231 function To_Lower
(A
: Character) return Character;
232 -- Fold a character to lower case;
234 procedure To_Lower
(A
: in out String);
235 -- Fold a string to lower case;
240 procedure Write_Header
;
241 -- Show user the program name, version and copyright
243 procedure Write_Usage
;
244 -- Show user the program options
250 function Base_Name
(File_Name
: String) return String is
255 Findex1
:= File_Name
'First;
257 -- The file might be specified by a full path name. However,
258 -- we want the path to be stripped away.
260 for J
in reverse File_Name
'Range loop
261 if Is_Directory_Separator
(File_Name
(J
)) then
267 Findex2
:= File_Name
'Last;
268 while Findex2
> Findex1
and then File_Name
(Findex2
) /= '.' loop
269 Findex2
:= Findex2
- 1;
272 if Findex2
= Findex1
then
273 Findex2
:= File_Name
'Last + 1;
276 return File_Name
(Findex1
.. Findex2
- 1);
279 -------------------------------
280 -- Check_Existing_Executable --
281 -------------------------------
283 procedure Check_Existing_Executable
(File_Name
: String) is
284 Ename
: String := File_Name
;
285 Efile
: File_Name_Type
;
286 Sfile
: File_Name_Type
;
289 Canonical_Case_File_Name
(Ename
);
291 Add_Str_To_Name_Buffer
(Ename
);
294 for J
in Units
.Table
'First .. Units
.Last
loop
295 Sfile
:= Units
.Table
(J
).Sfile
;
296 if Sfile
= Efile
then
297 Exit_With_Error
("executable name """ & File_Name
& """ matches "
298 & "source file name """ & Get_Name_String
(Sfile
) & """");
303 end Check_Existing_Executable
;
309 procedure Delete
(Name
: String) is
311 pragma Unreferenced
(Status
);
313 Status
:= unlink
(Name
'Address);
314 -- Is it really right to ignore an error here ???
321 procedure Error_Msg
(Message
: String) is
323 Write_Str
(Base_Command_Name
.all);
329 ---------------------
330 -- Exit_With_Error --
331 ---------------------
333 procedure Exit_With_Error
(Error
: String) is
336 Exit_Program
(E_Fatal
);
343 procedure Process_Args
is
346 Skip_Next
: Boolean := False;
347 -- Set to true if the next argument is to be added into the list of
348 -- linker's argument without parsing it.
350 procedure Check_Version_And_Help
is new Check_Version_And_Help_G
(Usage
);
352 -- Start of processing for Process_Args
355 -- First, check for --version and --help
357 Check_Version_And_Help
("GNATLINK", "1996");
359 -- Loop through arguments of gnatlink command
363 exit when Next_Arg
> Argument_Count
;
365 Process_One_Arg
: declare
366 Arg
: constant String := Argument
(Next_Arg
);
369 -- Case of argument which is a switch
371 -- We definitely need section by section comments here ???
375 -- This argument must not be parsed, just add it to the
376 -- list of linker's options.
380 Linker_Options
.Increment_Last
;
381 Linker_Options
.Table
(Linker_Options
.Last
) :=
384 elsif Arg'Length /= 0 and then Arg (1) = '-' then
385 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
387 ("invalid switch: """ & Arg & """ (gnat not needed here)");
390 if Arg = "-Xlinker" then
392 -- Next argument should be sent directly to the linker.
393 -- We do not want to parse it here.
397 Linker_Options.Increment_Last;
398 Linker_Options.Table (Linker_Options.Last) :=
402 and then (Arg
'Length < 5 or else Arg
(2 .. 5) /= "gnat")
404 Debug_Flag_Present
:= True;
406 Linker_Options
.Increment_Last
;
407 Linker_Options
.Table
(Linker_Options
.Last
) :=
410 Binder_Options.Increment_Last;
411 Binder_Options.Table (Binder_Options.Last) :=
412 Linker_Options.Table (Linker_Options.Last);
414 elsif Arg'Length >= 3 and then Arg (2) = 'M
' then
416 Switches : String_List_Access;
419 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
421 if Switches /= null then
422 for J in Switches'Range loop
423 Linker_Options.Increment_Last;
424 Linker_Options.Table (Linker_Options.Last) :=
430 elsif Arg'Length = 2 then
433 Linker_Options.Increment_Last;
434 Linker_Options.Table (Linker_Options.Last) :=
437 Binder_Options
.Increment_Last
;
438 Binder_Options
.Table
(Binder_Options
.Last
) :=
439 Linker_Options
.Table
(Linker_Options
.Last
);
441 Next_Arg
:= Next_Arg
+ 1;
443 if Next_Arg
> Argument_Count
then
444 Exit_With_Error
("Missing argument for -b");
447 Get_Machine_Name
: declare
448 Name_Arg
: constant String_Access
:=
449 new String'(Argument (Next_Arg));
452 Linker_Options.Increment_Last;
453 Linker_Options.Table (Linker_Options.Last) :=
456 Binder_Options.Increment_Last;
457 Binder_Options.Table (Binder_Options.Last) :=
460 end Get_Machine_Name;
463 if Object_List_File_Supported then
464 Object_List_File_Required := True;
467 ("Object list file not supported on this target");
471 Create_Map_File := True;
474 Compile_Bind_File := False;
477 Next_Arg := Next_Arg + 1;
479 if Next_Arg > Argument_Count then
480 Exit_With_Error ("Missing argument for -o");
484 new String'(Executable_Name
485 (Argument
(Next_Arg
),
486 Only_If_No_Suffix
=> True));
489 Opt
.CodePeer_Mode
:= True;
492 Opt
.Run_Path_Option
:= False;
496 -- Support "double" verbose mode. Second -v
497 -- gets sent to the linker and binder phases.
500 Very_Verbose_Mode
:= True;
502 Linker_Options
.Increment_Last
;
503 Linker_Options
.Table
(Linker_Options
.Last
) :=
506 Binder_Options.Increment_Last;
507 Binder_Options.Table (Binder_Options.Last) :=
508 Linker_Options.Table (Linker_Options.Last);
511 Verbose_Mode := True;
516 Linker_Options.Increment_Last;
517 Linker_Options.Table (Linker_Options.Last) :=
522 elsif Arg
(2) = 'B' then
523 Linker_Options
.Increment_Last
;
524 Linker_Options
.Table
(Linker_Options
.Last
) :=
527 Binder_Options.Increment_Last;
528 Binder_Options.Table (Binder_Options.Last) :=
529 Linker_Options.Table (Linker_Options.Last);
531 elsif Arg'Length >= 7 and then Arg (1 .. 7) = "--LINK=" then
532 if Arg'Length = 7 then
533 Exit_With_Error ("Missing argument for --LINK=");
537 System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last));
539 if Linker_Path = null then
541 ("Could not locate linker: " & Arg (8 .. Arg'Last));
544 elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
546 Program_Args : constant Argument_List_Access :=
547 Argument_String_To_List
548 (Arg (7 .. Arg'Last));
551 if Program_Args.all (1).all /= Gcc.all then
552 Gcc := new String'(Program_Args
.all (1).all);
553 Standard_Gcc
:= False;
556 -- Set appropriate flags for switches passed
558 for J
in 2 .. Program_Args
.all'Last loop
560 Arg
: constant String := Program_Args
.all (J
).all;
561 AF
: constant Integer := Arg
'First;
564 if Arg
'Length /= 0 and then Arg
(AF
) = '-' then
565 if Arg
(AF
+ 1) = 'g'
566 and then (Arg
'Length = 2
567 or else Arg
(AF
+ 2) in '0' .. '3'
568 or else Arg
(AF
+ 2 .. Arg
'Last) = "coff")
570 Debug_Flag_Present
:= True;
574 -- Add directory to source search dirs so that
575 -- Get_Target_Parameters can find system.ads
577 if Arg
(AF
.. AF
+ 1) = "-I"
578 and then Arg
'Length > 2
580 Add_Src_Search_Dir
(Arg
(AF
+ 2 .. Arg
'Last));
583 -- Pass to gcc for compiling binder generated file
584 -- No use passing libraries, it will just generate
587 if not (Arg
(AF
.. AF
+ 1) = "-l"
588 or else Arg
(AF
.. AF
+ 1) = "-L")
590 Binder_Options
.Increment_Last
;
591 Binder_Options
.Table
(Binder_Options
.Last
) :=
595 -- Pass to gcc for linking program
597 Gcc_Linker_Options.Increment_Last;
598 Gcc_Linker_Options.Table
599 (Gcc_Linker_Options.Last) := new String'(Arg
);
604 -- Send all multi-character switches not recognized as
605 -- a special case by gnatlink to the linker/loader stage.
608 Linker_Options
.Increment_Last
;
609 Linker_Options
.Table
(Linker_Options
.Last
) :=
613 -- Here if argument is a file name rather than a switch
616 -- If explicit ali file, capture it
619 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
621 if Ali_File_Name = null then
622 Ali_File_Name := new String'(Arg
);
624 Exit_With_Error
("cannot handle more than one ALI file");
627 -- If target object file, record object file
629 elsif Arg
'Length > Get_Target_Object_Suffix
.all'Length
632 Get_Target_Object_Suffix
.all'Length + 1 .. Arg
'Last)
633 = Get_Target_Object_Suffix
.all
635 Linker_Objects
.Increment_Last
;
636 Linker_Objects
.Table
(Linker_Objects
.Last
) :=
639 -- If host object file, record object file e.g. accept foo.o
640 -- as well as foo.obj on VMS target.
642 elsif Arg'Length > Get_Object_Suffix.all'Length
644 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
645 = Get_Object_Suffix.all
647 Linker_Objects.Increment_Last;
648 Linker_Objects.Table (Linker_Objects.Last) :=
651 -- If corresponding ali file exists, capture it
653 elsif Ali_File_Name
= null
654 and then Is_Regular_File
(Arg
& ".ali")
656 Ali_File_Name
:= new String'(Arg & ".ali");
658 -- Otherwise assume this is a linker options entry, but
659 -- see below for interesting adjustment to this assumption.
662 Linker_Options.Increment_Last;
663 Linker_Options.Table (Linker_Options.Last) :=
669 Next_Arg
:= Next_Arg
+ 1;
672 -- Compile the bind file with warnings suppressed, because
673 -- otherwise the with of the main program may cause junk warnings.
675 Binder_Options
.Increment_Last
;
676 Binder_Options
.Table
(Binder_Options
.Last
) := new String'("-gnatws");
678 -- If we did not get an ali file at all, and we had at least one
679 -- linker option, then assume that was the intended ali file after
680 -- all, so that we get a nicer message later on.
682 if Ali_File_Name = null
683 and then Linker_Options.Last >= Linker_Options.First
686 new String'(Linker_Options
.Table
(Linker_Options
.First
).all
691 -------------------------
692 -- Process_Binder_File --
693 -------------------------
695 procedure Process_Binder_File
(Name
: String) is
697 -- Binder file's descriptor
699 Link_Bytes
: Integer := 0;
700 -- Projected number of bytes for the linker command line
703 pragma Import
(C
, Link_Max
, "__gnat_link_max");
704 -- Maximum number of bytes on the command line supported by the OS
705 -- linker. Passed this limit the response file mechanism must be used
708 Next_Line
: String (1 .. 1000);
709 -- Current line value
713 -- Current line slice (the slice does not contain line terminator)
716 -- Current line last character for shared libraries (without version)
718 Objs_Begin
: Integer := 0;
719 -- First object file index in Linker_Objects table
721 Objs_End
: Integer := 0;
722 -- Last object file index in Linker_Objects table
725 pragma Warnings
(Off
, Status
);
726 -- Used for various Interfaces.C_Streams calls
728 Closing_Status
: Boolean;
729 pragma Warnings
(Off
, Closing_Status
);
732 GNAT_Static
: Boolean := False;
733 -- Save state of -static option
735 GNAT_Shared
: Boolean := False;
736 -- Save state of -shared option
738 Xlinker_Was_Previous
: Boolean := False;
739 -- Indicate that "-Xlinker" was the option preceding the current
740 -- option. If True, then the current option is never suppressed.
744 -- These data items are used to store current binder file context.
745 -- The context is composed of the file descriptor position and the
746 -- current line together with the slice indexes (first and last
747 -- position) for this line. The rollback data are used by the
748 -- Store_File_Context and Rollback_File_Context routines below.
749 -- The file context mechanism interact only with the Get_Next_Line
750 -- call. For example:
752 -- Store_File_Context;
754 -- Rollback_File_Context;
757 -- Both Get_Next_Line calls above will read the exact same data from
758 -- the file. In other words, Next_Line, Nfirst and Nlast variables
759 -- will be set with the exact same values.
761 RB_File_Pos
: long
; -- File position
762 RB_Next_Line
: String (1 .. 1000); -- Current line content
763 RB_Nlast
: Integer; -- Slice last index
764 RB_Nfirst
: Integer; -- Slice first index
766 Run_Path_Option_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
767 pragma Import
(C
, Run_Path_Option_Ptr
, "__gnat_run_path_option");
768 -- Pointer to string representing the native linker option which
769 -- specifies the path where the dynamic loader should find shared
770 -- libraries. Equal to null string if this system doesn't support it.
772 Libgcc_Subdir_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
773 pragma Import
(C
, Libgcc_Subdir_Ptr
, "__gnat_default_libgcc_subdir");
774 -- Pointer to string indicating the installation subdirectory where
775 -- a default shared libgcc might be found.
777 Object_Library_Ext_Ptr
: Interfaces
.C
.Strings
.chars_ptr
;
779 (C
, Object_Library_Ext_Ptr
, "__gnat_object_library_extension");
780 -- Pointer to string specifying the default extension for
781 -- object libraries, e.g. Unix uses ".a", VMS uses ".olb".
783 Separate_Run_Path_Options
: Boolean;
784 for Separate_Run_Path_Options
'Size use Character'Size;
786 (C
, Separate_Run_Path_Options
, "__gnat_separate_run_path_options");
787 -- Whether separate rpath options should be emitted for each directory
789 procedure Get_Next_Line
;
790 -- Read the next line from the binder file without the line
793 function Index
(S
, Pattern
: String) return Natural;
794 -- Return the last occurrence of Pattern in S, or 0 if none
796 function Is_Option_Present
(Opt
: String) return Boolean;
797 -- Return true if the option Opt is already present in
798 -- Linker_Options table.
800 procedure Store_File_Context
;
801 -- Store current file context, Fd position and current line data.
802 -- The file context is stored into the rollback data above (RB_*).
803 -- Store_File_Context can be called at any time, only the last call
804 -- will be used (i.e. this routine overwrites the file context).
806 procedure Rollback_File_Context
;
807 -- Restore file context from rollback data. This routine must be called
808 -- after Store_File_Context. The binder file context will be restored
809 -- with the data stored by the last Store_File_Context call.
811 procedure Write_RF
(S
: String);
812 -- Write a string to the response file and check if it was successful.
813 -- Fail the program if it was not successful (disk full).
819 procedure Get_Next_Line
is
823 Fchars
:= fgets
(Next_Line
'Address, Next_Line
'Length, Fd
);
825 if Fchars
= System
.Null_Address
then
826 Exit_With_Error
("Error reading binder output");
829 Nfirst
:= Next_Line
'First;
831 while Nlast
<= Next_Line
'Last
832 and then Next_Line
(Nlast
) /= ASCII
.LF
833 and then Next_Line
(Nlast
) /= ASCII
.CR
845 function Index
(S
, Pattern
: String) return Natural is
846 Len
: constant Natural := Pattern
'Length;
849 for J
in reverse S
'First .. S
'Last - Len
+ 1 loop
850 if Pattern
= S
(J
.. J
+ Len
- 1) then
858 -----------------------
859 -- Is_Option_Present --
860 -----------------------
862 function Is_Option_Present
(Opt
: String) return Boolean is
864 for I
in 1 .. Linker_Options
.Last
loop
866 if Linker_Options
.Table
(I
).all = Opt
then
873 end Is_Option_Present
;
875 ---------------------------
876 -- Rollback_File_Context --
877 ---------------------------
879 procedure Rollback_File_Context
is
881 Next_Line
:= RB_Next_Line
;
884 Status
:= fseek
(Fd
, RB_File_Pos
, Interfaces
.C_Streams
.SEEK_SET
);
887 Exit_With_Error
("Error setting file position");
889 end Rollback_File_Context
;
891 ------------------------
892 -- Store_File_Context --
893 ------------------------
895 procedure Store_File_Context
is
896 use type System
.CRTL
.long
;
899 RB_Next_Line
:= Next_Line
;
902 RB_File_Pos
:= ftell
(Fd
);
904 if RB_File_Pos
= -1 then
905 Exit_With_Error
("Error getting file position");
907 end Store_File_Context
;
913 procedure Write_RF
(S
: String) is
914 Success
: Boolean := True;
915 Back_Slash
: constant Character := '\';
918 -- If a GNU response file is used, space and backslash need to be
919 -- escaped because they are interpreted as a string separator and
920 -- an escape character respectively by the underlying mechanism.
921 -- On the other hand, quote and double-quote are not escaped since
922 -- they are interpreted as string delimiters on both sides.
924 if Using_GNU_response_file
then
925 for J
in S
'Range loop
926 if S
(J
) = ' ' or else S
(J
) = '\' then
927 if Write
(Tname_FD
, Back_Slash
'Address, 1) /= 1 then
932 if Write
(Tname_FD
, S
(J
)'Address, 1) /= 1 then
938 if Write
(Tname_FD
, S
'Address, S
'Length) /= S
'Length then
943 if Write
(Tname_FD
, ASCII
.LF
'Address, 1) /= 1 then
948 Exit_With_Error
("Error generating response file: disk full");
952 -- Start of processing for Process_Binder_File
955 Fd
:= fopen
(Name
'Address, Read_Mode
'Address);
957 if Fd
= NULL_Stream
then
958 Exit_With_Error
("Failed to open binder output");
961 -- Skip up to the Begin Info line
965 exit when Next_Line
(Nfirst
.. Nlast
) = Begin_Info
;
971 -- Go to end when end line is reached (this will happen in
972 -- High_Integrity_Mode where no -L switches are generated)
974 exit when Next_Line
(Nfirst
.. Nlast
) = End_Info
;
976 Next_Line
(Nfirst
.. Nlast
- 8) := Next_Line
(Nfirst
+ 8 .. Nlast
);
979 -- Go to next section when switches are reached
981 exit when Next_Line
(1) = '-';
983 -- Otherwise we have another object file to collect
985 Linker_Objects
.Increment_Last
;
987 -- Mark the positions of first and last object files in case they
988 -- need to be placed with a named file on systems having linker
991 if Objs_Begin
= 0 then
992 Objs_Begin
:= Linker_Objects
.Last
;
995 Linker_Objects
.Table
(Linker_Objects
.Last
) :=
996 new String'(Next_Line (Nfirst .. Nlast));
998 -- Nlast - Nfirst + 1, for the size, plus one for the space between
1001 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
1004 Objs_End := Linker_Objects.Last;
1006 -- Continue to compute the Link_Bytes, the linker options are part of
1007 -- command line length.
1011 while Next_Line (Nfirst .. Nlast) /= End_Info loop
1012 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
1016 Rollback_File_Context;
1018 -- On systems that have limitations on handling very long linker lines
1019 -- we make use of the system linker option which takes a list of object
1020 -- file names from a file instead of the command line itself. What we do
1021 -- is to replace the list of object files by the special linker option
1022 -- which then reads the object file list from a file instead. The option
1023 -- to read from a file instead of the command line is only triggered if
1024 -- a conservative threshold is passed.
1026 if Object_List_File_Required
1027 or else (Object_List_File_Supported
1028 and then Link_Bytes > Link_Max)
1030 -- Create a temporary file containing the Ada user object files
1031 -- needed by the link. This list is taken from the bind file and is
1032 -- output one object per line for maximal compatibility with linkers
1033 -- supporting this option.
1035 Create_Temp_File (Tname_FD, Tname);
1037 -- ??? File descriptor should be checked to not be Invalid_FD.
1038 -- ??? Status of Write and Close operations should be checked, and
1039 -- failure should occur if a status is wrong.
1041 for J in Objs_Begin .. Objs_End loop
1042 Write_RF (Linker_Objects.Table (J).all);
1044 Response_File_Objects.Increment_Last;
1045 Response_File_Objects.Table (Response_File_Objects.Last) :=
1046 Linker_Objects.Table (J);
1049 Close (Tname_FD, Closing_Status);
1051 -- Add the special objects list file option together with the name
1052 -- of the temporary file (removing the null character) to the objects
1055 Linker_Objects.Table (Objs_Begin) :=
1056 new String'(Object_File_Option
&
1057 Tname
(Tname
'First .. Tname
'Last - 1));
1059 -- The slots containing these object file names are then removed
1060 -- from the objects table so they do not appear in the link. They are
1061 -- removed by moving up the linker options and non-Ada object files
1062 -- appearing after the Ada object list in the table.
1068 N
:= Objs_End
- Objs_Begin
+ 1;
1070 for J
in Objs_End
+ 1 .. Linker_Objects
.Last
loop
1071 Linker_Objects
.Table
(J
- N
+ 1) := Linker_Objects
.Table
(J
);
1074 Linker_Objects
.Set_Last
(Linker_Objects
.Last
- N
+ 1);
1078 -- Process switches and options
1080 if Next_Line
(Nfirst
.. Nlast
) /= End_Info
then
1081 Xlinker_Was_Previous
:= False;
1084 if Xlinker_Was_Previous
1085 or else Next_Line
(Nfirst
.. Nlast
) = "-Xlinker"
1087 Linker_Options
.Increment_Last
;
1088 Linker_Options
.Table
(Linker_Options
.Last
) :=
1089 new String'(Next_Line (Nfirst .. Nlast));
1091 elsif Next_Line (Nfirst .. Nlast) = "-static" then
1092 GNAT_Static := True;
1094 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
1095 GNAT_Shared := True;
1097 -- Add binder options only if not already set on the command line.
1098 -- This rule is a way to control the linker options order.
1100 -- The following test needs comments, why is it VMS specific.
1101 -- The above comment looks out of date ???
1103 elsif not (OpenVMS_On_Target
1105 Is_Option_Present (Next_Line (Nfirst .. Nlast)))
1107 if Nlast > Nfirst + 2 and then
1108 Next_Line (Nfirst .. Nfirst + 1) = "-L"
1110 -- Construct a library search path for use later to locate
1111 -- static gnatlib libraries.
1113 if Libpath.Last > 1 then
1114 Libpath.Increment_Last;
1115 Libpath.Table (Libpath.Last) := Path_Separator;
1118 for I in Nfirst + 2 .. Nlast loop
1119 Libpath.Increment_Last;
1120 Libpath.Table (Libpath.Last) := Next_Line (I);
1123 Linker_Options.Increment_Last;
1125 Linker_Options.Table (Linker_Options.Last) :=
1126 new String'(Next_Line
(Nfirst
.. Nlast
));
1128 elsif Next_Line
(Nfirst
.. Nlast
) = "-ldecgnat"
1129 or else Next_Line
(Nfirst
.. Nlast
) = "-lgnarl"
1130 or else Next_Line
(Nfirst
.. Nlast
) = "-lgnat"
1133 (1 .. Natural'Min (Nlast
, 8 + Library_Version
'Length)) =
1134 Shared_Lib
("gnarl")
1137 (1 .. Natural'Min (Nlast
, 7 + Library_Version
'Length)) =
1140 -- If it is a shared library, remove the library version.
1141 -- We will be looking for the static version of the library
1142 -- as it is in the same directory as the shared version.
1144 if Next_Line
(Nlast
- Library_Version
'Length + 1 .. Nlast
) =
1147 -- Set Last to point to last character before the
1150 Last
:= Nlast
- Library_Version
'Length - 1;
1155 -- Given a Gnat standard library, search the library path to
1156 -- find the library location.
1158 -- Shouldn't we abstract a proc here, we are getting awfully
1159 -- heavily nested ???
1162 File_Path
: String_Access
;
1164 Object_Lib_Extension
: constant String :=
1165 Value
(Object_Library_Ext_Ptr
);
1167 File_Name
: constant String := "lib" &
1168 Next_Line
(Nfirst
+ 2 .. Last
) & Object_Lib_Extension
;
1170 Run_Path_Opt
: constant String :=
1171 Value
(Run_Path_Option_Ptr
);
1173 GCC_Index
: Natural;
1174 Run_Path_Opt_Index
: Natural := 0;
1178 Locate_Regular_File
(File_Name
,
1179 String (Libpath
.Table
(1 .. Libpath
.Last
)));
1181 if File_Path
/= null then
1184 -- If static gnatlib found, explicitly specify to
1185 -- overcome possible linker default usage of shared
1188 Linker_Options
.Increment_Last
;
1190 Linker_Options
.Table
(Linker_Options
.Last
) :=
1191 new String'(File_Path.all);
1193 elsif GNAT_Shared then
1194 if Opt.Run_Path_Option then
1196 -- If shared gnatlib desired, add appropriate
1197 -- system specific switch so that it can be
1198 -- located at runtime.
1200 if Run_Path_Opt'Length /= 0 then
1202 -- Output the system specific linker command
1203 -- that allows the image activator to find
1204 -- the shared library at runtime. Also add
1205 -- path to find libgcc_s.so, if relevant.
1208 Path : String (1 .. File_Path'Length + 15);
1210 Path_Last : constant Natural :=
1214 Path (1 .. File_Path'Length) :=
1217 -- To find the location of the shared version
1218 -- of libgcc, we look for "gcc-lib" in the
1219 -- path of the library. However, this
1220 -- subdirectory is no longer present in
1221 -- recent versions of GCC. So, we look for
1222 -- the last subdirectory "lib" in the path.
1225 Index (Path (1 .. Path_Last), "gcc-lib");
1227 if GCC_Index /= 0 then
1229 -- The shared version of libgcc is
1230 -- located in the parent directory.
1232 GCC_Index := GCC_Index - 1;
1237 (Path (1 .. Path_Last),
1240 if GCC_Index = 0 then
1242 Index (Path (1 .. Path_Last),
1243 Directory_Separator &
1245 Directory_Separator);
1248 -- If we have found a "lib" subdir in
1249 -- the path to libgnat, the possible
1250 -- shared libgcc of interest by default
1251 -- is in libgcc_subdir at the same
1254 if GCC_Index /= 0 then
1256 Subdir : constant String :=
1257 Value (Libgcc_Subdir_Ptr);
1261 GCC_Index + Subdir'Length) :=
1264 GCC_Index + Subdir'Length;
1269 -- Look for an eventual run_path_option in
1270 -- the linker switches.
1272 if Separate_Run_Path_Options then
1273 Linker_Options.Increment_Last;
1274 Linker_Options.Table
1275 (Linker_Options.Last) :=
1279 (1 .. File_Path
'Length
1280 - File_Name
'Length));
1282 if GCC_Index
/= 0 then
1283 Linker_Options
.Increment_Last
;
1284 Linker_Options
.Table
1285 (Linker_Options
.Last
) :=
1288 & Path (1 .. GCC_Index));
1293 1 .. Linker_Options.Last
1295 if Linker_Options.Table (J) /= null
1297 Linker_Options.Table (J)'Length
1298 > Run_Path_Opt'Length
1300 Linker_Options.Table (J)
1301 (1 .. Run_Path_Opt'Length) =
1304 -- We have found an already
1305 -- specified run_path_option:
1306 -- we will add to this
1307 -- switch, because only one
1308 -- run_path_option should be
1311 Run_Path_Opt_Index := J;
1316 -- If there is no run_path_option, we
1319 if Run_Path_Opt_Index = 0 then
1320 Linker_Options.Increment_Last;
1323 if GCC_Index = 0 then
1324 if Run_Path_Opt_Index = 0 then
1325 Linker_Options.Table
1326 (Linker_Options.Last) :=
1330 (1 .. File_Path
'Length
1331 - File_Name
'Length));
1334 Linker_Options
.Table
1335 (Run_Path_Opt_Index
) :=
1337 (Linker_Options.Table
1338 (Run_Path_Opt_Index).all
1341 (1 .. File_Path'Length
1342 - File_Name'Length));
1346 if Run_Path_Opt_Index = 0 then
1347 Linker_Options.Table
1348 (Linker_Options.Last) :=
1352 (1 .. File_Path
'Length
1355 & Path
(1 .. GCC_Index
));
1358 Linker_Options
.Table
1359 (Run_Path_Opt_Index
) :=
1361 (Linker_Options.Table
1362 (Run_Path_Opt_Index).all
1365 (1 .. File_Path'Length
1368 & Path (1 .. GCC_Index));
1376 -- Then we add the appropriate -l switch
1378 Linker_Options.Increment_Last;
1379 Linker_Options.Table (Linker_Options.Last) :=
1380 new String'(Next_Line
(Nfirst
.. Nlast
));
1384 -- If gnatlib library not found, then add it anyway in
1385 -- case some other mechanism may find it.
1387 Linker_Options
.Increment_Last
;
1388 Linker_Options
.Table
(Linker_Options
.Last
) :=
1389 new String'(Next_Line (Nfirst .. Nlast));
1393 Linker_Options.Increment_Last;
1394 Linker_Options.Table (Linker_Options.Last) :=
1395 new String'(Next_Line
(Nfirst
.. Nlast
));
1399 Xlinker_Was_Previous
:= Next_Line
(Nfirst
.. Nlast
) = "-Xlinker";
1402 exit when Next_Line
(Nfirst
.. Nlast
) = End_Info
;
1404 Next_Line
(Nfirst
.. Nlast
- 8) := Next_Line
(Nfirst
+ 8 .. Nlast
);
1409 -- If -shared was specified, invoke gcc with -shared-libgcc
1412 Linker_Options
.Increment_Last
;
1413 Linker_Options
.Table
(Linker_Options
.Last
) := Shared_Libgcc
;
1416 Status
:= fclose
(Fd
);
1417 end Process_Binder_File
;
1423 function To_Lower
(A
: Character) return Character is
1424 A_Val
: constant Natural := Character'Pos (A
);
1428 or else A_Val
in 16#C0#
.. 16#D6#
1429 or else A_Val
in 16#D8#
.. 16#DE#
1431 return Character'Val (A_Val
+ 16#
20#
);
1437 procedure To_Lower
(A
: in out String) is
1439 for J
in A
'Range loop
1440 A
(J
) := To_Lower
(A
(J
));
1450 Write_Str
("Usage: ");
1451 Write_Str
(Base_Command_Name
.all);
1452 Write_Str
(" switches mainprog.ali [non-Ada-objects] [linker-options]");
1455 Write_Line
(" mainprog.ali the ALI file of the main program");
1458 Display_Usage_Version_And_Help
;
1459 Write_Line
(" -f Force object file list to be generated");
1460 Write_Line
(" -g Compile binder source file with debug information");
1461 Write_Line
(" -n Do not compile the binder source file");
1462 Write_Line
(" -P Process files for use by CodePeer");
1463 Write_Line
(" -R Do not use a run_path_option");
1464 Write_Line
(" -v Verbose mode");
1465 Write_Line
(" -v -v Very verbose mode");
1467 Write_Line
(" -o nam Use 'nam' as the name of the executable");
1468 Write_Line
(" -b target Compile the binder source to run on target");
1469 Write_Line
(" -Bdir Load compiler executables from dir");
1471 if Is_Supported
(Map_File
) then
1472 Write_Line
(" -Mmap Create map file map");
1473 Write_Line
(" -M Create map file mainprog.map");
1476 Write_Line
(" --GCC=comp Use comp as the compiler");
1477 Write_Line
(" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
1479 Write_Line
(" [non-Ada-objects] list of non Ada object files");
1480 Write_Line
(" [linker-options] other options for the linker");
1487 procedure Write_Header
is
1489 if Verbose_Mode
then
1491 Display_Version
("GNATLINK", "1995");
1499 procedure Write_Usage
is
1505 -- Start of processing for Gnatlink
1508 -- Add the directory where gnatlink is invoked in front of the path, if
1509 -- gnatlink is invoked with directory information. Only do this if the
1510 -- platform is not VMS, where the notion of path does not really exist.
1512 if not Hostparm
.OpenVMS
then
1514 Command
: constant String := Command_Name
;
1517 for Index
in reverse Command
'Range loop
1518 if Command
(Index
) = Directory_Separator
then
1520 Absolute_Dir
: constant String :=
1522 (Command
(Command
'First .. Index
));
1524 PATH
: constant String :=
1527 Getenv
("PATH").all;
1530 Setenv
("PATH", PATH
);
1539 Base_Command_Name
:= new String'(Base_Name (Command_Name));
1541 -- Fold to lower case "GNATLINK" on VMS to be consistent with output
1542 -- from other GNAT utilities.
1544 if Hostparm.OpenVMS then
1545 To_Lower (Base_Command_Name.all);
1550 if Argument_Count = 0
1551 or else (Verbose_Mode and then Argument_Count = 1)
1554 Exit_Program (E_Fatal);
1557 -- Initialize packages to be used
1562 -- We always compile with -c
1564 Binder_Options_From_ALI.Increment_Last;
1565 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1568 if Ali_File_Name
= null then
1569 Exit_With_Error
("no ali file given for link");
1572 if not Is_Regular_File
(Ali_File_Name
.all) then
1573 Exit_With_Error
(Ali_File_Name
.all & " not found");
1576 -- Read the ALI file of the main subprogram if the binder generated file
1577 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1578 -- back end switches from this ALI file and use these switches to compile
1579 -- the binder generated file
1581 if Compile_Bind_File
and then Standard_Gcc
then
1583 Name_Len
:= Ali_File_Name
'Length;
1584 Name_Buffer
(1 .. Name_Len
) := Ali_File_Name
.all;
1588 F
: constant File_Name_Type
:= Name_Find
;
1589 T
: Text_Buffer_Ptr
;
1593 -- Load the ALI file
1595 T
:= Read_Library_Info
(F
, True);
1597 -- Read it. Note that we ignore errors, since we only want very
1598 -- limited information from the ali file, and likely a slightly
1599 -- wrong version will be just fine, though in normal operation
1600 -- we don't expect this to happen!
1607 Ignore_Errors
=> True);
1609 if A
/= No_ALI_Id
then
1611 Index
in Units
.Table
(ALIs
.Table
(A
).First_Unit
).First_Arg
..
1612 Units
.Table
(ALIs
.Table
(A
).First_Unit
).Last_Arg
1614 -- Do not compile with the front end switches. However, --RTS
1615 -- is to be dealt with specially because it needs to be passed
1616 -- if the binder-generated file is in Ada and may also be used
1617 -- to drive the linker.
1620 Arg
: String_Ptr
renames Args
.Table
(Index
);
1622 if not Is_Front_End_Switch
(Arg
.all) then
1623 Binder_Options_From_ALI
.Increment_Last
;
1624 Binder_Options_From_ALI
.Table
1625 (Binder_Options_From_ALI
.Last
) := String_Access
(Arg
);
1627 elsif Arg
'Length > 5
1628 and then Arg
(Arg
'First + 2 .. Arg
'First + 5) = "RTS="
1630 Binder_Options_From_ALI
.Increment_Last
;
1631 Binder_Options_From_ALI
.Table
1632 (Binder_Options_From_ALI
.Last
) := String_Access
(Arg
);
1634 -- Set the RTS_*_Path_Name variables, so that
1635 -- the correct directories will be set when
1636 -- Osint.Add_Default_Search_Dirs will be called later.
1638 Opt
.RTS_Src_Path_Name
:=
1640 (Arg
(Arg
'First + 6 .. Arg
'Last), Include
);
1642 Opt
.RTS_Lib_Path_Name
:=
1644 (Arg
(Arg
'First + 6 .. Arg
'Last), Objects
);
1646 -- GNAT doesn't support the GCC multilib mechanism.
1647 -- This means that, when a multilib switch is used
1648 -- to request a particular compilation mode, the
1649 -- corresponding runtime switch (--RTS) must also be
1650 -- specified. The long-term goal is to fully support the
1651 -- multilib mechanism; however, in the meantime, it is
1652 -- convenient to eliminate the redundancy by keying the
1653 -- compilation mode on a single switch, namely --RTS.
1655 -- Pass -mrtp to the linker if --RTS=rtp was passed
1659 (Arg
(Arg
'First + 6 .. Arg
'First + 8) = "rtp"
1660 or else Arg
(Arg
'Last - 2 .. Arg
'Last) = "rtp")
1662 Linker_Options
.Increment_Last
;
1663 Linker_Options
.Table
(Linker_Options
.Last
) :=
1664 new String'("-mrtp");
1673 -- Get target parameters
1675 Osint.Add_Default_Search_Dirs;
1676 Targparm.Get_Target_Parameters;
1678 if VM_Target /= No_VM then
1680 when JVM_Target => Gcc := new String'("jvm-gnatcompile");
1681 when CLI_Target
=> Gcc
:= new String'("dotnet-gnatcompile");
1682 when No_VM => raise Program_Error;
1686 -- Compile the bind file with the following switches:
1688 -- -gnatA stops reading gnat.adc, since we don't know what
1689 -- pragmas would work, and we do not need it anyway.
1691 -- -gnatWb allows brackets coding for wide characters
1693 -- -gnatiw allows wide characters in identifiers. This is needed
1694 -- because bindgen uses brackets encoding for all upper
1695 -- half and wide characters in identifier names.
1697 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
1699 Binder_Options_From_ALI.Increment_Last;
1700 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1701 new String'("-gnatA");
1702 Binder_Options_From_ALI
.Increment_Last
;
1703 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1704 new String'("-gnatWb");
1705 Binder_Options_From_ALI.Increment_Last;
1706 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1707 new String'("-gnatiw");
1709 if Opt
.CodePeer_Mode
then
1710 Binder_Options_From_ALI
.Increment_Last
;
1711 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1713 Binder_Options_From_ALI.Increment_Last;
1714 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1715 new String'("adascil");
1716 Binder_Options_From_ALI
.Increment_Last
;
1717 Binder_Options_From_ALI
.Table
(Binder_Options_From_ALI
.Last
) :=
1718 new String'("-gnatcC");
1721 -- Locate all the necessary programs and verify required files are present
1723 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1725 if Gcc_Path = null then
1726 Exit_With_Error ("Couldn't locate " & Gcc.all);
1729 if Linker_Path = null then
1730 if VM_Target = CLI_Target then
1731 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld");
1733 if Linker_Path = null then
1734 Exit_With_Error ("Couldn't locate dotnet-ld");
1737 elsif RTX_RTSS_Kernel_Module_On_Target then
1739 -- Use Microsoft linker for RTSS modules
1741 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link");
1743 if Linker_Path = null then
1744 Exit_With_Error ("Couldn't locate link");
1748 Linker_Path := Gcc_Path;
1754 -- If no output name specified, then use the base name of .ali file name
1756 if Output_File_Name = null then
1758 new String'(Base_Name
(Ali_File_Name
.all)
1759 & Get_Target_Debuggable_Suffix
.all);
1762 if RTX_RTSS_Kernel_Module_On_Target
then
1763 Linker_Options
.Increment_Last
;
1764 Linker_Options
.Table
(Linker_Options
.Last
) :=
1765 new String'("/OUT:" & Output_File_Name.all);
1768 Linker_Options.Increment_Last;
1769 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
1771 Linker_Options
.Increment_Last
;
1772 Linker_Options
.Table
(Linker_Options
.Last
) :=
1773 new String'(Output_File_Name.all);
1776 Check_Existing_Executable (Output_File_Name.all);
1778 -- Warn if main program is called "test", as that may be a built-in command
1779 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1780 -- will not appear. However, do not warn in the case of a cross compiler.
1782 -- Assume this is a cross tool if the executable name is not gnatlink
1784 if Base_Command_Name.all = "gnatlink"
1785 and then Output_File_Name.all = "test"
1787 Error_Msg ("warning: executable name """ & Output_File_Name.all
1788 & """ may conflict with shell command");
1791 -- If -M switch was specified, add the switches to create the map file
1793 if Create_Map_File then
1795 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
1796 Switches : String_List_Access;
1799 Convert (Map_File, Map_Name, Switches);
1801 if Switches /= null then
1802 for J in Switches'Range loop
1803 Linker_Options.Increment_Last;
1804 Linker_Options.Table (Linker_Options.Last) := Switches (J);
1810 -- Perform consistency checks
1812 -- Transform the .ali file name into the binder output file name
1814 Make_Binder_File_Names : declare
1815 Fname : constant String := Base_Name (Ali_File_Name.all);
1816 Fname_Len : Integer := Fname'Length;
1818 function Get_Maximum_File_Name_Length return Integer;
1819 pragma Import (C, Get_Maximum_File_Name_Length,
1820 "__gnat_get_maximum_file_name_length");
1822 Maximum_File_Name_Length : constant Integer :=
1823 Get_Maximum_File_Name_Length;
1825 Bind_File_Prefix : Types.String_Ptr;
1826 -- Contains prefix used for bind files
1831 if OpenVMS_On_Target then
1832 Bind_File_Prefix := new String'("b__");
1834 Bind_File_Prefix
:= new String'("b~");
1837 -- If the length of the binder file becomes too long due to
1838 -- the addition of the "b?" prefix, then truncate it.
1840 if Maximum_File_Name_Length > 0 then
1842 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1844 Fname_Len := Fname_Len - 1;
1849 Fnam : constant String :=
1850 Bind_File_Prefix.all &
1851 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1854 Binder_Spec_Src_File := new String'(Fnam
& ".ads");
1855 Binder_Body_Src_File
:= new String'(Fnam & ".adb");
1856 Binder_Ali_File := new String'(Fnam
& ".ali");
1858 Binder_Obj_File
:= new String'(Fnam & Get_Target_Object_Suffix.all);
1861 if Fname_Len /= Fname'Length then
1862 Binder_Options.Increment_Last;
1863 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1864 Binder_Options
.Increment_Last
;
1865 Binder_Options
.Table
(Binder_Options
.Last
) := Binder_Obj_File
;
1867 end Make_Binder_File_Names
;
1869 Process_Binder_File
(Binder_Body_Src_File
.all & ASCII
.NUL
);
1871 -- Compile the binder file. This is fast, so we always do it, unless
1872 -- specifically told not to by the -n switch
1874 if Compile_Bind_File
then
1878 Args
: Argument_List
1879 (1 .. Binder_Options_From_ALI
.Last
+ Binder_Options
.Last
+ 1);
1882 for J
in 1 .. Binder_Options_From_ALI
.Last
loop
1883 Args
(J
) := Binder_Options_From_ALI
.Table
(J
);
1886 for J
in 1 .. Binder_Options
.Last
loop
1887 Args
(Binder_Options_From_ALI
.Last
+ J
) :=
1888 Binder_Options
.Table
(J
);
1891 -- Use the full path of the binder generated source, so that it is
1892 -- guaranteed that the debugger will find this source, even with
1896 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1898 if Verbose_Mode then
1899 Write_Str (Base_Name (Gcc_Path.all));
1901 for J in Args'Range loop
1903 Write_Str (Args (J).all);
1909 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1912 Exit_Program (E_Fatal);
1917 -- In CodePeer mode, there's nothing left to do after the binder file has
1920 if Opt.CodePeer_Mode then
1924 -- Now, actually link the program
1926 -- Skip this step for now on JVM since the Java interpreter will do
1927 -- the actual link at run time. We might consider packing all class files
1928 -- in a .zip file during this step.
1930 if VM_Target /= JVM_Target then
1932 Num_Args : Natural :=
1933 (Linker_Options.Last - Linker_Options.First + 1) +
1934 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1935 (Linker_Objects.Last - Linker_Objects.First + 1);
1936 Stack_Op : Boolean := False;
1937 IDENT_Op : Boolean := False;
1940 if AAMP_On_Target then
1942 -- Remove extraneous flags not relevant for AAMP
1944 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1945 if Linker_Options.Table (J)'Length = 0
1946 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1947 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1948 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1949 or else Linker_Options.Table (J) (1 .. 2) = "-g"
1951 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1952 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1953 Linker_Options.Decrement_Last;
1954 Num_Args := Num_Args - 1;
1958 elsif RTX_RTSS_Kernel_Module_On_Target then
1960 -- Remove irrelevant flags for Microsoft linker, adapt some others
1962 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1964 -- Remove flags that are not accepted
1966 if Linker_Options.Table (J)'Length = 0
1967 or else Linker_Options.Table (J) (1 .. 2) = "-l"
1968 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1969 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1970 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1971 or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker"
1972 or else Linker_Options.Table (J) (1 .. 9) = "-mthreads"
1974 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1975 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1976 Linker_Options.Decrement_Last;
1977 Num_Args := Num_Args - 1;
1979 -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by
1982 elsif Linker_Options.Table (J) (1 .. 2) = "-L" then
1984 Libpath_Option : constant String_Access := new String'
1986 Linker_Options
.Table
1987 (J
) (3 .. Linker_Options
.Table
(J
).all'Last));
1989 for Index
in 10 .. Libpath_Option
'Last loop
1990 if Libpath_Option
(Index
) = '/' then
1991 Libpath_Option
(Index
) := '\';
1995 Linker_Options
.Table
(J
) := Libpath_Option
;
1998 -- Replace "-g" by "/DEBUG"
2000 elsif Linker_Options
.Table
(J
) (1 .. 2) = "-g" then
2001 Linker_Options
.Table
(J
) := new String'("/DEBUG");
2003 -- Replace "-o" by "/OUT:"
2005 elsif Linker_Options.Table (J) (1 .. 2) = "-o" then
2006 Linker_Options.Table (J + 1) := new String'
2007 ("/OUT:" & Linker_Options
.Table
(J
+ 1).all);
2009 Linker_Options
.Table
(J
.. Linker_Options
.Last
- 1) :=
2010 Linker_Options
.Table
(J
+ 1 .. Linker_Options
.Last
);
2011 Linker_Options
.Decrement_Last
;
2012 Num_Args
:= Num_Args
- 1;
2014 -- Replace "--stack=" by "/STACK:"
2016 elsif Linker_Options
.Table
(J
) (1 .. 8) = "--stack=" then
2017 Linker_Options
.Table
(J
) := new String'
2019 Linker_Options.Table (J)
2020 (9 .. Linker_Options.Table (J).all'Last));
2022 -- Replace "-v" by its counterpart "/VERBOSE"
2024 elsif Linker_Options.Table (J) (1 .. 2) = "-v" then
2025 Linker_Options.Table (J) := new String'("/VERBOSE");
2029 -- Add some required flags to create RTSS modules
2032 Flags_For_Linker
: constant array (1 .. 17) of String_Access
:=
2033 (new String'("/NODEFAULTLIB"),
2034 new String'("/INCREMENTAL:NO"),
2035 new String'("/NOLOGO"),
2036 new String'("/DRIVER"),
2037 new String'("/ALIGN:0x20"),
2038 new String'("/SUBSYSTEM:NATIVE"),
2039 new String'("/ENTRY:_RtapiProcessEntryCRT@8"),
2040 new String'("/RELEASE"),
2041 new String'("startupCRT.obj"),
2042 new String'("rtxlibcmt.lib"),
2043 new String'("oldnames.lib"),
2044 new String'("rtapi_rtss.lib"),
2045 new String'("Rtx_Rtss.lib"),
2046 new String'("libkernel32.a"),
2047 new String'("libws2_32.a"),
2048 new String'("libmswsock.a"),
2049 new String'("libadvapi32.a"));
2050 -- These flags need to be passed to Microsoft linker. They
2051 -- come from the RTX documentation.
2053 Gcc_Lib_Path : constant String_Access := new String'
2054 ("/LIBPATH:" & Include_Dir_Default_Prefix
& "\..\");
2055 -- Place to look for gcc related libraries, such as libgcc
2058 -- Replace UNIX "/" by Windows "\" in the path
2060 for Index
in 10 .. Gcc_Lib_Path
.all'Last loop
2061 if Gcc_Lib_Path
(Index
) = '/' then
2062 Gcc_Lib_Path
(Index
) := '\';
2066 Linker_Options
.Increment_Last
;
2067 Linker_Options
.Table
(Linker_Options
.Last
) := Gcc_Lib_Path
;
2068 Num_Args
:= Num_Args
+ 1;
2070 for Index
in Flags_For_Linker
'Range loop
2071 Linker_Options
.Increment_Last
;
2072 Linker_Options
.Table
(Linker_Options
.Last
) :=
2073 Flags_For_Linker
(Index
);
2074 Num_Args
:= Num_Args
+ 1;
2079 -- Remove duplicate stack size setting from the Linker_Options table.
2080 -- The stack setting option "-Xlinker --stack=R,C" can be found
2081 -- in one line when set by a pragma Linker_Options or in two lines
2082 -- ("-Xlinker" then "--stack=R,C") when set on the command line. We
2083 -- also check for the "-Wl,--stack=R" style option.
2085 -- We must remove the second stack setting option instance because
2086 -- the one on the command line will always be the first one. And any
2087 -- subsequent stack setting option will overwrite the previous one.
2088 -- This is done especially for GNAT/NT where we set the stack size
2089 -- for tasking programs by a pragma in the NT specific tasking
2090 -- package System.Task_Primitives.Operations.
2092 -- Note: This is not a FOR loop that runs from Linker_Options.First
2093 -- to Linker_Options.Last, since operations within the loop can
2094 -- modify the length of the table.
2096 Clean_Link_Option_Set
: declare
2098 Shared_Libgcc_Seen
: Boolean := False;
2101 J
:= Linker_Options
.First
;
2102 while J
<= Linker_Options
.Last
loop
2103 if Linker_Options
.Table
(J
).all = "-Xlinker"
2104 and then J
< Linker_Options
.Last
2105 and then Linker_Options
.Table
(J
+ 1)'Length > 8
2106 and then Linker_Options
.Table
(J
+ 1) (1 .. 8) = "--stack="
2109 Linker_Options
.Table
(J
.. Linker_Options
.Last
- 2) :=
2110 Linker_Options
.Table
(J
+ 2 .. Linker_Options
.Last
);
2111 Linker_Options
.Decrement_Last
;
2112 Linker_Options
.Decrement_Last
;
2113 Num_Args
:= Num_Args
- 2;
2120 -- Remove duplicate -shared-libgcc switch
2122 if Linker_Options
.Table
(J
).all = Shared_Libgcc_String
then
2123 if Shared_Libgcc_Seen
then
2124 Linker_Options
.Table
(J
.. Linker_Options
.Last
- 1) :=
2125 Linker_Options
.Table
(J
+ 1 .. Linker_Options
.Last
);
2126 Linker_Options
.Decrement_Last
;
2127 Num_Args
:= Num_Args
- 1;
2130 Shared_Libgcc_Seen
:= True;
2134 -- Here we just check for a canonical form that matches the
2135 -- pragma Linker_Options set in the NT runtime.
2137 if (Linker_Options
.Table
(J
)'Length > 17
2138 and then Linker_Options
.Table
(J
) (1 .. 17) =
2139 "-Xlinker --stack=")
2141 (Linker_Options
.Table
(J
)'Length > 12
2142 and then Linker_Options
.Table
(J
) (1 .. 12) =
2146 Linker_Options
.Table
(J
.. Linker_Options
.Last
- 1) :=
2147 Linker_Options
.Table
(J
+ 1 .. Linker_Options
.Last
);
2148 Linker_Options
.Decrement_Last
;
2149 Num_Args
:= Num_Args
- 1;
2156 -- Remove duplicate IDENTIFICATION directives (VMS)
2158 if Linker_Options
.Table
(J
)'Length > 29
2159 and then Linker_Options
.Table
(J
) (1 .. 30) =
2160 "--for-linker=--identification="
2163 Linker_Options
.Table
(J
.. Linker_Options
.Last
- 1) :=
2164 Linker_Options
.Table
(J
+ 1 .. Linker_Options
.Last
);
2165 Linker_Options
.Decrement_Last
;
2166 Num_Args
:= Num_Args
- 1;
2176 if Linker_Path
= Gcc_Path
and then VM_Target
= No_VM
then
2178 -- For systems where the default is to link statically with
2179 -- libgcc, if gcc is not called with -shared-libgcc, call it
2180 -- with -static-libgcc, as there are some platforms where one
2181 -- of these two switches is compulsory to link.
2183 if Shared_Libgcc_Default
= 'T'
2184 and then not Shared_Libgcc_Seen
2186 Linker_Options
.Increment_Last
;
2187 Linker_Options
.Table
(Linker_Options
.Last
) := Static_Libgcc
;
2188 Num_Args
:= Num_Args
+ 1;
2191 elsif RTX_RTSS_Kernel_Module_On_Target
then
2193 -- Force the use of the static libgcc for RTSS modules
2195 Linker_Options
.Increment_Last
;
2196 Linker_Options
.Table
(Linker_Options
.Last
) :=
2197 new String'("libgcc.a");
2198 Num_Args := Num_Args + 1;
2201 end Clean_Link_Option_Set;
2203 -- Prepare arguments for call to linker
2205 Call_Linker : declare
2207 Args : Argument_List (1 .. Num_Args + 1);
2208 Index : Integer := Args'First;
2211 Args (Index) := Binder_Obj_File;
2213 -- Add the object files and any -largs libraries
2215 for J in Linker_Objects.First .. Linker_Objects.Last loop
2217 Args (Index) := Linker_Objects.Table (J);
2220 -- Add the linker options from the binder file
2222 for J in Linker_Options.First .. Linker_Options.Last loop
2224 Args (Index) := Linker_Options.Table (J);
2227 -- Finally add the libraries from the --GCC= switch
2229 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2231 Args (Index) := Gcc_Linker_Options.Table (J);
2234 if Verbose_Mode then
2235 Write_Str (Linker_Path.all);
2237 for J in Args'Range loop
2239 Write_Str (Args (J).all);
2244 -- If we are on very verbose mode (-v -v) and a response file
2245 -- is used we display its content.
2247 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2249 Write_Str ("Response file (" &
2250 Tname (Tname'First .. Tname'Last - 1) &
2255 Response_File_Objects.First .. Response_File_Objects.Last
2257 Write_Str (Response_File_Objects.Table (J).all);
2265 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2269 -- Delete the temporary file used in conjunction with linking
2270 -- if one was created. See Process_Bind_File for details.
2272 if Tname_FD /= Invalid_FD then
2277 Error_Msg ("error when calling " & Linker_Path.all);
2278 Exit_Program (E_Fatal);
2284 -- Only keep the binder output file and it's associated object
2285 -- file if compiling with the -g option. These files are only
2286 -- useful if debugging.
2288 if not Debug_Flag_Present then
2289 Delete (Binder_Ali_File.all & ASCII.NUL);
2290 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2291 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2293 if VM_Target = No_VM then
2294 Delete (Binder_Obj_File.all & ASCII.NUL);
2298 Exit_Program (E_Success);
2302 Write_Line (Exception_Information (X));
2303 Exit_With_Error ("INTERNAL ERROR. Please report");