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* g++.dg/cpp0x/constexpr-53094-2.C: Ignore non-standard ABI
[official-gcc.git] / gcc / ada / gnatlink.adb
blob87ad072f7a51536c3b503eda3f72e028b0ca9ad9
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- G N A T L I N K --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1996-2013, Free Software Foundation, Inc. --
10 -- --
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. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 -- Gnatlink usage: please consult the gnat documentation
27
28 with ALI; use ALI;
29 with Csets;
30 with Gnatvsn; use Gnatvsn;
31 with Hostparm;
32 with Indepsw; use Indepsw;
33 with Namet; use Namet;
34 with Opt;
35 with Osint; use Osint;
36 with Output; use Output;
37 with Snames;
38 with Switch; use Switch;
39 with System; use System;
40 with Table;
41 with Targparm; use Targparm;
42 with Types;
43
44 with Ada.Command_Line; use Ada.Command_Line;
45 with Ada.Exceptions; use Ada.Exceptions;
46
47 with System.OS_Lib; use System.OS_Lib;
48 with System.CRTL;
49
50 with Interfaces.C_Streams; use Interfaces.C_Streams;
51 with Interfaces.C.Strings; use Interfaces.C.Strings;
52
53 procedure Gnatlink is
54 pragma Ident (Gnatvsn.Gnat_Static_Version_String);
55
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
60
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
65
66 package Gcc_Linker_Options is new Table.Table (
67 Table_Component_Type => String_Access,
68 Table_Index_Type => Integer,
69 Table_Low_Bound => 1,
70 Table_Initial => 20,
71 Table_Increment => 100,
72 Table_Name => "Gnatlink.Gcc_Linker_Options");
73 -- Comments needed ???
74
75 package Libpath is new Table.Table (
76 Table_Component_Type => Character,
77 Table_Index_Type => Integer,
78 Table_Low_Bound => 1,
79 Table_Initial => 4096,
80 Table_Increment => 100,
81 Table_Name => "Gnatlink.Libpath");
82 -- Comments needed ???
83
84 package Linker_Options is new Table.Table (
85 Table_Component_Type => String_Access,
86 Table_Index_Type => Integer,
87 Table_Low_Bound => 1,
88 Table_Initial => 20,
89 Table_Increment => 100,
90 Table_Name => "Gnatlink.Linker_Options");
91 -- Comments needed ???
92
93 package Linker_Objects is new Table.Table (
94 Table_Component_Type => String_Access,
95 Table_Index_Type => Integer,
96 Table_Low_Bound => 1,
97 Table_Initial => 20,
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.
108
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,
113 Table_Initial => 20,
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)
119
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
124 Table_Initial => 20,
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
128 -- subprogram.
129
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
134 Table_Initial => 20,
135 Table_Increment => 100,
136 Table_Name => "Gnatlink.Binder_Options");
137 -- This table collects the arguments to be passed to compile the binder
138 -- generated file.
139
140 Gcc : String_Access := Program_Name ("gcc", "gnatlink");
141
142 Read_Mode : constant String := "r" & ASCII.NUL;
143
144 Begin_Info : constant String := "-- BEGIN Object file/option list";
145 End_Info : constant String := "-- END Object file/option list ";
146
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;
155
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.
160
161 Debug_Flag_Present : Boolean := False;
162 Verbose_Mode : Boolean := False;
163 Very_Verbose_Mode : Boolean := False;
164
165 Standard_Gcc : Boolean := True;
166
167 Compile_Bind_File : Boolean := True;
168 -- Set to False if bind file is not to be compiled
169
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).
173
174 Object_List_File_Supported : Boolean;
175 for Object_List_File_Supported'Size use Character'Size;
176 pragma Import
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.
180
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.
185
186 Object_File_Option : constant String := Value (Object_File_Option_Ptr);
187 -- The linker option which specifies the response file as a string
188
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
193
194 Object_List_File_Required : Boolean := False;
195 -- Set to True to force generation of a response file
196
197 Shared_Libgcc_Default : Character;
198 for Shared_Libgcc_Default'Size use Character'Size;
199 pragma Import
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.
203
204 function Base_Name (File_Name : String) return String;
205 -- Return just the file name part without the extension (if present)
206
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
212 -- extensions.
213
214 procedure Delete (Name : String);
215 -- Wrapper to unlink as status is ignored by this application
216
217 procedure Error_Msg (Message : String);
218 -- Output the error or warning Message
219
220 procedure Exit_With_Error (Error : String);
221 -- Output Error and exit program with a fatal condition
222
223 procedure Process_Args;
224 -- Go through all the arguments and build option tables
225
226 procedure Process_Binder_File (Name : String);
227 -- Reads the binder file and extracts linker arguments
228
229 procedure Usage;
230 -- Display usage
231
232 procedure Write_Header;
233 -- Show user the program name, version and copyright
234
235 procedure Write_Usage;
236 -- Show user the program options
237
238 ---------------
239 -- Base_Name --
240 ---------------
241
242 function Base_Name (File_Name : String) return String is
243 Findex1 : Natural;
244 Findex2 : Natural;
245
246 begin
247 Findex1 := File_Name'First;
248
249 -- The file might be specified by a full path name. However,
250 -- we want the path to be stripped away.
251
252 for J in reverse File_Name'Range loop
253 if Is_Directory_Separator (File_Name (J)) then
254 Findex1 := J + 1;
255 exit;
256 end if;
257 end loop;
258
259 Findex2 := File_Name'Last;
260 while Findex2 > Findex1
261 and then File_Name (Findex2) /= '.'
262 loop
263 Findex2 := Findex2 - 1;
264 end loop;
265
266 if Findex2 = Findex1 then
267 Findex2 := File_Name'Last + 1;
268 end if;
269
270 return File_Name (Findex1 .. Findex2 - 1);
271 end Base_Name;
272
273 -------------------------------
274 -- Check_Existing_Executable --
275 -------------------------------
276
277 procedure Check_Existing_Executable (File_Name : String) is
278 Ename : String := File_Name;
279 Efile : File_Name_Type;
280 Sfile : File_Name_Type;
281
282 begin
283 Canonical_Case_File_Name (Ename);
284 Name_Len := 0;
285 Add_Str_To_Name_Buffer (Ename);
286 Efile := Name_Find;
287
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) & """");
293 end if;
294 end loop;
295
296 Delete (File_Name);
297 end Check_Existing_Executable;
298
299 ------------
300 -- Delete --
301 ------------
302
303 procedure Delete (Name : String) is
304 Status : int;
305 pragma Unreferenced (Status);
306 begin
307 Status := unlink (Name'Address);
308 -- Is it really right to ignore an error here ???
309 end Delete;
310
311 ---------------
312 -- Error_Msg --
313 ---------------
314
315 procedure Error_Msg (Message : String) is
316 begin
317 Write_Str (Base_Name (Command_Name));
318 Write_Str (": ");
319 Write_Str (Message);
320 Write_Eol;
321 end Error_Msg;
322
323 ---------------------
324 -- Exit_With_Error --
325 ---------------------
326
327 procedure Exit_With_Error (Error : String) is
328 begin
329 Error_Msg (Error);
330 Exit_Program (E_Fatal);
331 end Exit_With_Error;
332
333 ------------------
334 -- Process_Args --
335 ------------------
336
337 procedure Process_Args is
338 Next_Arg : Integer;
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.
342
343 procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
344
345 -- Start of processing for Process_Args
346
347 begin
348 -- First, check for --version and --help
349
350 Check_Version_And_Help ("GNATLINK", "1995");
351
352 -- Loop through arguments of gnatlink command
353
354 Next_Arg := 1;
355 loop
356 exit when Next_Arg > Argument_Count;
357
358 Process_One_Arg : declare
359 Arg : constant String := Argument (Next_Arg);
360
361 begin
362 -- Case of argument which is a switch
363
364 -- We definitely need section by section comments here ???
365
366 if Skip_Next then
367
368 -- This argument must not be parsed, just add it to the
369 -- list of linker's options.
370
371 Skip_Next := False;
372
373 Linker_Options.Increment_Last;
374 Linker_Options.Table (Linker_Options.Last) :=
375 new String'(Arg);
376
377 elsif Arg'Length /= 0 and then Arg (1) = '-' then
378 if Arg'Length > 4 and then Arg (2 .. 5) = "gnat" then
379 Exit_With_Error
380 ("invalid switch: """ & Arg & """ (gnat not needed here)");
381 end if;
382
383 if Arg = "-Xlinker" then
384
385 -- Next argument should be sent directly to the linker.
386 -- We do not want to parse it here.
387
388 Skip_Next := True;
389
390 Linker_Options.Increment_Last;
391 Linker_Options.Table (Linker_Options.Last) :=
392 new String'(Arg);
393
394 elsif Arg (2) = 'g'
395 and then (Arg'Length < 5 or else Arg (2 .. 5) /= "gnat")
396 then
397 Debug_Flag_Present := True;
398
399 Linker_Options.Increment_Last;
400 Linker_Options.Table (Linker_Options.Last) :=
401 new String'(Arg);
402
403 Binder_Options.Increment_Last;
404 Binder_Options.Table (Binder_Options.Last) :=
405 Linker_Options.Table (Linker_Options.Last);
406
407 elsif Arg'Length >= 3 and then Arg (2) = 'M' then
408 declare
409 Switches : String_List_Access;
410
411 begin
412 Convert (Map_File, Arg (3 .. Arg'Last), Switches);
413
414 if Switches /= null then
415 for J in Switches'Range loop
416 Linker_Options.Increment_Last;
417 Linker_Options.Table (Linker_Options.Last) :=
418 Switches (J);
419 end loop;
420 end if;
421 end;
422
423 elsif Arg'Length = 2 then
424 case Arg (2) is
425 when 'b' =>
426 Linker_Options.Increment_Last;
427 Linker_Options.Table (Linker_Options.Last) :=
428 new String'(Arg);
429
430 Binder_Options.Increment_Last;
431 Binder_Options.Table (Binder_Options.Last) :=
432 Linker_Options.Table (Linker_Options.Last);
433
434 Next_Arg := Next_Arg + 1;
435
436 if Next_Arg > Argument_Count then
437 Exit_With_Error ("Missing argument for -b");
438 end if;
439
440 Get_Machine_Name : declare
441 Name_Arg : constant String_Access :=
442 new String'(Argument (Next_Arg));
443
444 begin
445 Linker_Options.Increment_Last;
446 Linker_Options.Table (Linker_Options.Last) :=
447 Name_Arg;
448
449 Binder_Options.Increment_Last;
450 Binder_Options.Table (Binder_Options.Last) :=
451 Name_Arg;
452
453 end Get_Machine_Name;
454
455 when 'f' =>
456 if Object_List_File_Supported then
457 Object_List_File_Required := True;
458 else
459 Exit_With_Error
460 ("Object list file not supported on this target");
461 end if;
462
463 when 'M' =>
464 Create_Map_File := True;
465
466 when 'n' =>
467 Compile_Bind_File := False;
468
469 when 'o' =>
470 Next_Arg := Next_Arg + 1;
471
472 if Next_Arg > Argument_Count then
473 Exit_With_Error ("Missing argument for -o");
474 end if;
475
476 Output_File_Name :=
477 new String'(Executable_Name
478 (Argument (Next_Arg),
479 Only_If_No_Suffix => True));
480
481 when 'P' =>
482 Opt.CodePeer_Mode := True;
483
484 when 'R' =>
485 Opt.Run_Path_Option := False;
486
487 when 'v' =>
488
489 -- Support "double" verbose mode. Second -v
490 -- gets sent to the linker and binder phases.
491
492 if Verbose_Mode then
493 Very_Verbose_Mode := True;
494
495 Linker_Options.Increment_Last;
496 Linker_Options.Table (Linker_Options.Last) :=
497 new String'(Arg);
498
499 Binder_Options.Increment_Last;
500 Binder_Options.Table (Binder_Options.Last) :=
501 Linker_Options.Table (Linker_Options.Last);
502
503 else
504 Verbose_Mode := True;
505
506 end if;
507
508 when others =>
509 Linker_Options.Increment_Last;
510 Linker_Options.Table (Linker_Options.Last) :=
511 new String'(Arg);
512
513 end case;
514
515 elsif Arg (2) = 'B' then
516 Linker_Options.Increment_Last;
517 Linker_Options.Table (Linker_Options.Last) :=
518 new String'(Arg);
519
520 Binder_Options.Increment_Last;
521 Binder_Options.Table (Binder_Options.Last) :=
522 Linker_Options.Table (Linker_Options.Last);
523
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=");
527 end if;
528
529 Linker_Path :=
530 System.OS_Lib.Locate_Exec_On_Path (Arg (8 .. Arg'Last));
531
532 if Linker_Path = null then
533 Exit_With_Error
534 ("Could not locate linker: " & Arg (8 .. Arg'Last));
535 end if;
536
537 elsif Arg'Length > 6 and then Arg (1 .. 6) = "--GCC=" then
538 declare
539 Program_Args : constant Argument_List_Access :=
540 Argument_String_To_List
541 (Arg (7 .. Arg'Last));
542
543 begin
544 if Program_Args.all (1).all /= Gcc.all then
545 Gcc := new String'(Program_Args.all (1).all);
546 Standard_Gcc := False;
547 end if;
548
549 -- Set appropriate flags for switches passed
550
551 for J in 2 .. Program_Args.all'Last loop
552 declare
553 Arg : constant String := Program_Args.all (J).all;
554 AF : constant Integer := Arg'First;
555
556 begin
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")
562 then
563 Debug_Flag_Present := True;
564 end if;
565 end if;
566
567 -- Add directory to source search dirs so that
568 -- Get_Target_Parameters can find system.ads
569
570 if Arg (AF .. AF + 1) = "-I"
571 and then Arg'Length > 2
572 then
573 Add_Src_Search_Dir (Arg (AF + 2 .. Arg'Last));
574 end if;
575
576 -- Pass to gcc for compiling binder generated file
577 -- No use passing libraries, it will just generate
578 -- a warning
579
580 if not (Arg (AF .. AF + 1) = "-l"
581 or else Arg (AF .. AF + 1) = "-L")
582 then
583 Binder_Options.Increment_Last;
584 Binder_Options.Table (Binder_Options.Last) :=
585 new String'(Arg);
586 end if;
587
588 -- Pass to gcc for linking program
589
590 Gcc_Linker_Options.Increment_Last;
591 Gcc_Linker_Options.Table
592 (Gcc_Linker_Options.Last) := new String'(Arg);
593 end;
594 end loop;
595 end;
596
597 -- Send all multi-character switches not recognized as
598 -- a special case by gnatlink to the linker/loader stage.
599
600 else
601 Linker_Options.Increment_Last;
602 Linker_Options.Table (Linker_Options.Last) :=
603 new String'(Arg);
604 end if;
605
606 -- Here if argument is a file name rather than a switch
607
608 else
609 -- If explicit ali file, capture it
610
611 if Arg'Length > 4
612 and then Arg (Arg'Last - 3 .. Arg'Last) = ".ali"
613 then
614 if Ali_File_Name = null then
615 Ali_File_Name := new String'(Arg);
616 else
617 Exit_With_Error ("cannot handle more than one ALI file");
618 end if;
619
620 -- If target object file, record object file
621
622 elsif Arg'Length > Get_Target_Object_Suffix.all'Length
623 and then Arg
624 (Arg'Last -
625 Get_Target_Object_Suffix.all'Length + 1 .. Arg'Last)
626 = Get_Target_Object_Suffix.all
627 then
628 Linker_Objects.Increment_Last;
629 Linker_Objects.Table (Linker_Objects.Last) :=
630 new String'(Arg);
631
632 -- If host object file, record object file
633 -- e.g. accept foo.o as well as foo.obj on VMS target
634
635 elsif Arg'Length > Get_Object_Suffix.all'Length
636 and then Arg
637 (Arg'Last - Get_Object_Suffix.all'Length + 1 .. Arg'Last)
638 = Get_Object_Suffix.all
639 then
640 Linker_Objects.Increment_Last;
641 Linker_Objects.Table (Linker_Objects.Last) :=
642 new String'(Arg);
643
644 -- If corresponding ali file exists, capture it
645
646 elsif Ali_File_Name = null
647 and then Is_Regular_File (Arg & ".ali")
648 then
649 Ali_File_Name := new String'(Arg & ".ali");
650
651 -- Otherwise assume this is a linker options entry, but
652 -- see below for interesting adjustment to this assumption.
653
654 else
655 Linker_Options.Increment_Last;
656 Linker_Options.Table (Linker_Options.Last) :=
657 new String'(Arg);
658 end if;
659 end if;
660 end Process_One_Arg;
661
662 Next_Arg := Next_Arg + 1;
663 end loop;
664
665 -- Compile the bind file with warnings suppressed, because
666 -- otherwise the with of the main program may cause junk warnings.
667
668 Binder_Options.Increment_Last;
669 Binder_Options.Table (Binder_Options.Last) := new String'("-gnatws");
670
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.
674
675 if Ali_File_Name = null
676 and then Linker_Options.Last >= Linker_Options.First
677 then
678 Ali_File_Name :=
679 new String'(Linker_Options.Table (Linker_Options.First).all &
680 ".ali");
681 end if;
682 end Process_Args;
683
684 -------------------------
685 -- Process_Binder_File --
686 -------------------------
687
688 procedure Process_Binder_File (Name : String) is
689 Fd : FILEs;
690 -- Binder file's descriptor
691
692 Link_Bytes : Integer := 0;
693 -- Projected number of bytes for the linker command line
694
695 Link_Max : Integer;
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
699 -- if supported.
700
701 Next_Line : String (1 .. 1000);
702 -- Current line value
703
704 Nlast : Integer;
705 Nfirst : Integer;
706 -- Current line slice (the slice does not contain line terminator)
707
708 Last : Integer;
709 -- Current line last character for shared libraries (without version)
710
711 Objs_Begin : Integer := 0;
712 -- First object file index in Linker_Objects table
713
714 Objs_End : Integer := 0;
715 -- Last object file index in Linker_Objects table
716
717 Status : int;
718 pragma Warnings (Off, Status);
719 -- Used for various Interfaces.C_Streams calls
720
721 Closing_Status : Boolean;
722 pragma Warnings (Off, Closing_Status);
723 -- For call to Close
724
725 GNAT_Static : Boolean := False;
726 -- Save state of -static option
727
728 GNAT_Shared : Boolean := False;
729 -- Save state of -shared option
730
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.
734
735 -- Rollback data
736
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:
744
745 -- Store_File_Context;
746 -- Get_Next_Line;
747 -- Rollback_File_Context;
748 -- Get_Next_Line;
749
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.
753
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
758
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.
764
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.
769
770 Object_Library_Ext_Ptr : Interfaces.C.Strings.chars_ptr;
771 pragma Import
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".
775
776 Separate_Run_Path_Options : Boolean;
777 for Separate_Run_Path_Options'Size use Character'Size;
778 pragma Import
779 (C, Separate_Run_Path_Options, "__gnat_separate_run_path_options");
780 -- Whether separate rpath options should be emitted for each directory
781
782 procedure Get_Next_Line;
783 -- Read the next line from the binder file without the line
784 -- terminator.
785
786 function Index (S, Pattern : String) return Natural;
787 -- Return the last occurrence of Pattern in S, or 0 if none
788
789 function Is_Option_Present (Opt : String) return Boolean;
790 -- Return true if the option Opt is already present in
791 -- Linker_Options table.
792
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).
798
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.
803
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).
807
808 -------------------
809 -- Get_Next_Line --
810 -------------------
811
812 procedure Get_Next_Line is
813 Fchars : chars;
814
815 begin
816 Fchars := fgets (Next_Line'Address, Next_Line'Length, Fd);
817
818 if Fchars = System.Null_Address then
819 Exit_With_Error ("Error reading binder output");
820 end if;
821
822 Nfirst := Next_Line'First;
823 Nlast := Nfirst;
824 while Nlast <= Next_Line'Last
825 and then Next_Line (Nlast) /= ASCII.LF
826 and then Next_Line (Nlast) /= ASCII.CR
827 loop
828 Nlast := Nlast + 1;
829 end loop;
830
831 Nlast := Nlast - 1;
832 end Get_Next_Line;
833
834 -----------
835 -- Index --
836 -----------
837
838 function Index (S, Pattern : String) return Natural is
839 Len : constant Natural := Pattern'Length;
840
841 begin
842 for J in reverse S'First .. S'Last - Len + 1 loop
843 if Pattern = S (J .. J + Len - 1) then
844 return J;
845 end if;
846 end loop;
847
848 return 0;
849 end Index;
850
851 -----------------------
852 -- Is_Option_Present --
853 -----------------------
854
855 function Is_Option_Present (Opt : String) return Boolean is
856 begin
857 for I in 1 .. Linker_Options.Last loop
858
859 if Linker_Options.Table (I).all = Opt then
860 return True;
861 end if;
862
863 end loop;
864
865 return False;
866 end Is_Option_Present;
867
868 ---------------------------
869 -- Rollback_File_Context --
870 ---------------------------
871
872 procedure Rollback_File_Context is
873 begin
874 Next_Line := RB_Next_Line;
875 Nfirst := RB_Nfirst;
876 Nlast := RB_Nlast;
877 Status := fseek (Fd, RB_File_Pos, Interfaces.C_Streams.SEEK_SET);
878
879 if Status = -1 then
880 Exit_With_Error ("Error setting file position");
881 end if;
882 end Rollback_File_Context;
883
884 ------------------------
885 -- Store_File_Context --
886 ------------------------
887
888 procedure Store_File_Context is
889 use type System.CRTL.long;
890 begin
891 RB_Next_Line := Next_Line;
892 RB_Nfirst := Nfirst;
893 RB_Nlast := Nlast;
894 RB_File_Pos := ftell (Fd);
895
896 if RB_File_Pos = -1 then
897 Exit_With_Error ("Error getting file position");
898 end if;
899 end Store_File_Context;
900
901 --------------
902 -- Write_RF --
903 --------------
904
905 procedure Write_RF (S : String) is
906 Success : Boolean := True;
907 Back_Slash : constant Character := '\';
908
909 begin
910 -- If a GNU response file is used, space and backslash need to be
911 -- escaped because they are interpreted as a string separator and
912 -- an escape character respectively by the underlying mechanism.
913 -- On the other hand, quote and double-quote are not escaped since
914 -- they are interpreted as string delimiters on both sides.
915
916 if Using_GNU_response_file then
917 for J in S'Range loop
918 if S (J) = ' ' or else S (J) = '\' then
919 if Write (Tname_FD, Back_Slash'Address, 1) /= 1 then
920 Success := False;
921 end if;
922 end if;
923
924 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
925 Success := False;
926 end if;
927 end loop;
928
929 else
930 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
931 Success := False;
932 end if;
933 end if;
934
935 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
936 Success := False;
937 end if;
938
939 if not Success then
940 Exit_With_Error ("Error generating response file: disk full");
941 end if;
942 end Write_RF;
943
944 -- Start of processing for Process_Binder_File
945
946 begin
947 Fd := fopen (Name'Address, Read_Mode'Address);
948
949 if Fd = NULL_Stream then
950 Exit_With_Error ("Failed to open binder output");
951 end if;
952
953 -- Skip up to the Begin Info line
954
955 loop
956 Get_Next_Line;
957 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
958 end loop;
959
960 loop
961 Get_Next_Line;
962
963 -- Go to end when end line is reached (this will happen in
964 -- High_Integrity_Mode where no -L switches are generated)
965
966 exit when Next_Line (Nfirst .. Nlast) = End_Info;
967
968 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
969 Nlast := Nlast - 8;
970
971 -- Go to next section when switches are reached
972
973 exit when Next_Line (1) = '-';
974
975 -- Otherwise we have another object file to collect
976
977 Linker_Objects.Increment_Last;
978
979 -- Mark the positions of first and last object files in case they
980 -- need to be placed with a named file on systems having linker
981 -- line limitations.
982
983 if Objs_Begin = 0 then
984 Objs_Begin := Linker_Objects.Last;
985 end if;
986
987 Linker_Objects.Table (Linker_Objects.Last) :=
988 new String'(Next_Line (Nfirst .. Nlast));
989
990 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
991 -- Nlast - Nfirst + 1, for the size, plus one for the space between
992 -- each arguments.
993 end loop;
994
995 Objs_End := Linker_Objects.Last;
996
997 -- Continue to compute the Link_Bytes, the linker options are part of
998 -- command line length.
999
1000 Store_File_Context;
1001
1002 while Next_Line (Nfirst .. Nlast) /= End_Info loop
1003 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
1004 Get_Next_Line;
1005 end loop;
1006
1007 Rollback_File_Context;
1008
1009 -- On systems that have limitations on handling very long linker lines
1010 -- we make use of the system linker option which takes a list of object
1011 -- file names from a file instead of the command line itself. What we do
1012 -- is to replace the list of object files by the special linker option
1013 -- which then reads the object file list from a file instead. The option
1014 -- to read from a file instead of the command line is only triggered if
1015 -- a conservative threshold is passed.
1016
1017 if Object_List_File_Required
1018 or else (Object_List_File_Supported
1019 and then Link_Bytes > Link_Max)
1020 then
1021 -- Create a temporary file containing the Ada user object files
1022 -- needed by the link. This list is taken from the bind file and is
1023 -- output one object per line for maximal compatibility with linkers
1024 -- supporting this option.
1025
1026 Create_Temp_File (Tname_FD, Tname);
1027
1028 -- ??? File descriptor should be checked to not be Invalid_FD.
1029 -- ??? Status of Write and Close operations should be checked, and
1030 -- failure should occur if a status is wrong.
1031
1032 for J in Objs_Begin .. Objs_End loop
1033 Write_RF (Linker_Objects.Table (J).all);
1034
1035 Response_File_Objects.Increment_Last;
1036 Response_File_Objects.Table (Response_File_Objects.Last) :=
1037 Linker_Objects.Table (J);
1038 end loop;
1039
1040 Close (Tname_FD, Closing_Status);
1041
1042 -- Add the special objects list file option together with the name
1043 -- of the temporary file (removing the null character) to the objects
1044 -- file table.
1045
1046 Linker_Objects.Table (Objs_Begin) :=
1047 new String'(Object_File_Option &
1048 Tname (Tname'First .. Tname'Last - 1));
1049
1050 -- The slots containing these object file names are then removed
1051 -- from the objects table so they do not appear in the link. They are
1052 -- removed by moving up the linker options and non-Ada object files
1053 -- appearing after the Ada object list in the table.
1054
1055 declare
1056 N : Integer;
1057
1058 begin
1059 N := Objs_End - Objs_Begin + 1;
1060
1061 for J in Objs_End + 1 .. Linker_Objects.Last loop
1062 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
1063 end loop;
1064
1065 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
1066 end;
1067 end if;
1068
1069 -- Process switches and options
1070
1071 if Next_Line (Nfirst .. Nlast) /= End_Info then
1072 Xlinker_Was_Previous := False;
1073
1074 loop
1075 if Xlinker_Was_Previous
1076 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
1077 then
1078 Linker_Options.Increment_Last;
1079 Linker_Options.Table (Linker_Options.Last) :=
1080 new String'(Next_Line (Nfirst .. Nlast));
1081
1082 elsif Next_Line (Nfirst .. Nlast) = "-static" then
1083 GNAT_Static := True;
1084
1085 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
1086 GNAT_Shared := True;
1087
1088 -- Add binder options only if not already set on the command line.
1089 -- This rule is a way to control the linker options order.
1090
1091 -- The following test needs comments, why is it VMS specific.
1092 -- The above comment looks out of date ???
1093
1094 elsif not (OpenVMS_On_Target
1095 and then
1096 Is_Option_Present (Next_Line (Nfirst .. Nlast)))
1097 then
1098 if Nlast > Nfirst + 2 and then
1099 Next_Line (Nfirst .. Nfirst + 1) = "-L"
1100 then
1101 -- Construct a library search path for use later to locate
1102 -- static gnatlib libraries.
1103
1104 if Libpath.Last > 1 then
1105 Libpath.Increment_Last;
1106 Libpath.Table (Libpath.Last) := Path_Separator;
1107 end if;
1108
1109 for I in Nfirst + 2 .. Nlast loop
1110 Libpath.Increment_Last;
1111 Libpath.Table (Libpath.Last) := Next_Line (I);
1112 end loop;
1113
1114 Linker_Options.Increment_Last;
1115
1116 Linker_Options.Table (Linker_Options.Last) :=
1117 new String'(Next_Line (Nfirst .. Nlast));
1118
1119 elsif Next_Line (Nfirst .. Nlast) = "-ldecgnat"
1120 or else Next_Line (Nfirst .. Nlast) = "-lgnarl"
1121 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
1122 or else Next_Line
1123 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
1124 Shared_Lib ("gnarl")
1125 or else Next_Line
1126 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
1127 Shared_Lib ("gnat")
1128 then
1129 -- If it is a shared library, remove the library version.
1130 -- We will be looking for the static version of the library
1131 -- as it is in the same directory as the shared version.
1132
1133 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast)
1134 = Library_Version
1135 then
1136 -- Set Last to point to last character before the
1137 -- library version.
1138
1139 Last := Nlast - Library_Version'Length - 1;
1140 else
1141 Last := Nlast;
1142 end if;
1143
1144 -- Given a Gnat standard library, search the library path to
1145 -- find the library location.
1146
1147 -- Shouldn't we abstract a proc here, we are getting awfully
1148 -- heavily nested ???
1149
1150 declare
1151 File_Path : String_Access;
1152
1153 Object_Lib_Extension : constant String :=
1154 Value (Object_Library_Ext_Ptr);
1155
1156 File_Name : constant String := "lib" &
1157 Next_Line (Nfirst + 2 .. Last) &
1158 Object_Lib_Extension;
1159
1160 Run_Path_Opt : constant String :=
1161 Value (Run_Path_Option_Ptr);
1162
1163 GCC_Index : Natural;
1164 Run_Path_Opt_Index : Natural := 0;
1165
1166 begin
1167 File_Path :=
1168 Locate_Regular_File (File_Name,
1169 String (Libpath.Table (1 .. Libpath.Last)));
1170
1171 if File_Path /= null then
1172 if GNAT_Static then
1173
1174 -- If static gnatlib found, explicitly
1175 -- specify to overcome possible linker
1176 -- default usage of shared version.
1177
1178 Linker_Options.Increment_Last;
1179
1180 Linker_Options.Table (Linker_Options.Last) :=
1181 new String'(File_Path.all);
1182
1183 elsif GNAT_Shared then
1184 if Opt.Run_Path_Option then
1185
1186 -- If shared gnatlib desired, add the
1187 -- appropriate system specific switch
1188 -- so that it can be located at runtime.
1189
1190 if Run_Path_Opt'Length /= 0 then
1191
1192 -- Output the system specific linker command
1193 -- that allows the image activator to find
1194 -- the shared library at runtime. Also add
1195 -- path to find libgcc_s.so, if relevant.
1196
1197 declare
1198 Path : String (1 .. File_Path'Length + 15);
1199 Path_Last : constant Natural :=
1200 File_Path'Length;
1201
1202 begin
1203 Path (1 .. File_Path'Length) :=
1204 File_Path.all;
1205
1206 -- To find the location of the shared version
1207 -- of libgcc, we look for "gcc-lib" in the
1208 -- path of the library. However, this
1209 -- subdirectory is no longer present in
1210 -- recent versions of GCC. So, we look for
1211 -- the last subdirectory "lib" in the path.
1212
1213 GCC_Index :=
1214 Index (Path (1 .. Path_Last), "gcc-lib");
1215
1216 if GCC_Index /= 0 then
1217
1218 -- The shared version of libgcc is
1219 -- located in the parent directory.
1220
1221 GCC_Index := GCC_Index - 1;
1222
1223 else
1224 GCC_Index :=
1225 Index
1226 (Path (1 .. Path_Last),
1227 "/lib/");
1228
1229 if GCC_Index = 0 then
1230 GCC_Index :=
1231 Index (Path (1 .. Path_Last),
1232 Directory_Separator &
1233 "lib" &
1234 Directory_Separator);
1235 end if;
1236
1237 -- If we have found a "lib" subdir in
1238 -- the path to libgnat, the possible
1239 -- shared libgcc of interest by default
1240 -- is in libgcc_subdir at the same
1241 -- level.
1242
1243 if GCC_Index /= 0 then
1244 declare
1245 Subdir : constant String :=
1246 Value (Libgcc_Subdir_Ptr);
1247 begin
1248 Path
1249 (GCC_Index + 1 ..
1250 GCC_Index + Subdir'Length) :=
1251 Subdir;
1252 GCC_Index :=
1253 GCC_Index + Subdir'Length;
1254 end;
1255 end if;
1256 end if;
1257
1258 -- Look for an eventual run_path_option in
1259 -- the linker switches.
1260
1261 if Separate_Run_Path_Options then
1262 Linker_Options.Increment_Last;
1263 Linker_Options.Table
1264 (Linker_Options.Last) :=
1265 new String'
1266 (Run_Path_Opt
1267 & File_Path
1268 (1 .. File_Path'Length
1269 - File_Name'Length));
1270
1271 if GCC_Index /= 0 then
1272 Linker_Options.Increment_Last;
1273 Linker_Options.Table
1274 (Linker_Options.Last) :=
1275 new String'
1276 (Run_Path_Opt
1277 & Path (1 .. GCC_Index));
1278 end if;
1279
1280 else
1281 for J in reverse
1282 1 .. Linker_Options.Last
1283 loop
1284 if Linker_Options.Table (J) /= null
1285 and then
1286 Linker_Options.Table (J)'Length
1287 > Run_Path_Opt'Length
1288 and then
1289 Linker_Options.Table (J)
1290 (1 .. Run_Path_Opt'Length) =
1291 Run_Path_Opt
1292 then
1293 -- We have found an already
1294 -- specified run_path_option: we
1295 -- will add to this switch,
1296 -- because only one
1297 -- run_path_option should be
1298 -- specified.
1299
1300 Run_Path_Opt_Index := J;
1301 exit;
1302 end if;
1303 end loop;
1304
1305 -- If there is no run_path_option, we
1306 -- need to add one.
1307
1308 if Run_Path_Opt_Index = 0 then
1309 Linker_Options.Increment_Last;
1310 end if;
1311
1312 if GCC_Index = 0 then
1313 if Run_Path_Opt_Index = 0 then
1314 Linker_Options.Table
1315 (Linker_Options.Last) :=
1316 new String'
1317 (Run_Path_Opt
1318 & File_Path
1319 (1 .. File_Path'Length
1320 - File_Name'Length));
1321
1322 else
1323 Linker_Options.Table
1324 (Run_Path_Opt_Index) :=
1325 new String'
1326 (Linker_Options.Table
1327 (Run_Path_Opt_Index).all
1328 & Path_Separator
1329 & File_Path
1330 (1 .. File_Path'Length
1331 - File_Name'Length));
1332 end if;
1333
1334 else
1335 if Run_Path_Opt_Index = 0 then
1336 Linker_Options.Table
1337 (Linker_Options.Last) :=
1338 new String'
1339 (Run_Path_Opt
1340 & File_Path
1341 (1 .. File_Path'Length
1342 - File_Name'Length)
1343 & Path_Separator
1344 & Path (1 .. GCC_Index));
1345
1346 else
1347 Linker_Options.Table
1348 (Run_Path_Opt_Index) :=
1349 new String'
1350 (Linker_Options.Table
1351 (Run_Path_Opt_Index).all
1352 & Path_Separator
1353 & File_Path
1354 (1 .. File_Path'Length
1355 - File_Name'Length)
1356 & Path_Separator
1357 & Path (1 .. GCC_Index));
1358 end if;
1359 end if;
1360 end if;
1361 end;
1362 end if;
1363 end if;
1364
1365 -- Then we add the appropriate -l switch
1366
1367 Linker_Options.Increment_Last;
1368 Linker_Options.Table (Linker_Options.Last) :=
1369 new String'(Next_Line (Nfirst .. Nlast));
1370 end if;
1371
1372 else
1373 -- If gnatlib library not found, then
1374 -- add it anyway in case some other
1375 -- mechanism may find it.
1376
1377 Linker_Options.Increment_Last;
1378 Linker_Options.Table (Linker_Options.Last) :=
1379 new String'(Next_Line (Nfirst .. Nlast));
1380 end if;
1381 end;
1382 else
1383 Linker_Options.Increment_Last;
1384 Linker_Options.Table (Linker_Options.Last) :=
1385 new String'(Next_Line (Nfirst .. Nlast));
1386 end if;
1387 end if;
1388
1389 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
1390
1391 Get_Next_Line;
1392 exit when Next_Line (Nfirst .. Nlast) = End_Info;
1393
1394 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
1395 Nlast := Nlast - 8;
1396 end loop;
1397 end if;
1398
1399 -- If -shared was specified, invoke gcc with -shared-libgcc
1400
1401 if GNAT_Shared then
1402 Linker_Options.Increment_Last;
1403 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
1404 end if;
1405
1406 Status := fclose (Fd);
1407 end Process_Binder_File;
1408
1409 -----------
1410 -- Usage --
1411 -----------
1412
1413 procedure Usage is
1414 begin
1415 Write_Str ("Usage: ");
1416 Write_Str (Base_Name (Command_Name));
1417 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
1418 Write_Eol;
1419 Write_Eol;
1420 Write_Line (" mainprog.ali the ALI file of the main program");
1421 Write_Eol;
1422 Write_Eol;
1423 Display_Usage_Version_And_Help;
1424 Write_Line (" -f Force object file list to be generated");
1425 Write_Line (" -g Compile binder source file with debug information");
1426 Write_Line (" -n Do not compile the binder source file");
1427 Write_Line (" -P Process files for use by CodePeer");
1428 Write_Line (" -R Do not use a run_path_option");
1429 Write_Line (" -v Verbose mode");
1430 Write_Line (" -v -v Very verbose mode");
1431 Write_Eol;
1432 Write_Line (" -o nam Use 'nam' as the name of the executable");
1433 Write_Line (" -b target Compile the binder source to run on target");
1434 Write_Line (" -Bdir Load compiler executables from dir");
1435
1436 if Is_Supported (Map_File) then
1437 Write_Line (" -Mmap Create map file map");
1438 Write_Line (" -M Create map file mainprog.map");
1439 end if;
1440
1441 Write_Line (" --GCC=comp Use comp as the compiler");
1442 Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
1443 Write_Eol;
1444 Write_Line (" [non-Ada-objects] list of non Ada object files");
1445 Write_Line (" [linker-options] other options for the linker");
1446 end Usage;
1447
1448 ------------------
1449 -- Write_Header --
1450 ------------------
1451
1452 procedure Write_Header is
1453 begin
1454 if Verbose_Mode then
1455 Write_Eol;
1456 Display_Version ("GNATLINK", "1995");
1457 end if;
1458 end Write_Header;
1459
1460 -----------------
1461 -- Write_Usage --
1462 -----------------
1463
1464 procedure Write_Usage is
1465 begin
1466 Write_Header;
1467 Usage;
1468 end Write_Usage;
1469
1470 -- Start of processing for Gnatlink
1471
1472 begin
1473 -- Add the directory where gnatlink is invoked in front of the path, if
1474 -- gnatlink is invoked with directory information. Only do this if the
1475 -- platform is not VMS, where the notion of path does not really exist.
1476
1477 if not Hostparm.OpenVMS then
1478 declare
1479 Command : constant String := Command_Name;
1480
1481 begin
1482 for Index in reverse Command'Range loop
1483 if Command (Index) = Directory_Separator then
1484 declare
1485 Absolute_Dir : constant String :=
1486 Normalize_Pathname
1487 (Command (Command'First .. Index));
1488
1489 PATH : constant String :=
1490 Absolute_Dir &
1491 Path_Separator &
1492 Getenv ("PATH").all;
1493
1494 begin
1495 Setenv ("PATH", PATH);
1496 end;
1497
1498 exit;
1499 end if;
1500 end loop;
1501 end;
1502 end if;
1503
1504 Process_Args;
1505
1506 if Argument_Count = 0
1507 or else (Verbose_Mode and then Argument_Count = 1)
1508 then
1509 Write_Usage;
1510 Exit_Program (E_Fatal);
1511 end if;
1512
1513 -- Initialize packages to be used
1514
1515 Csets.Initialize;
1516 Snames.Initialize;
1517
1518 -- We always compile with -c
1519
1520 Binder_Options_From_ALI.Increment_Last;
1521 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1522 new String'("-c");
1523
1524 if Ali_File_Name = null then
1525 Exit_With_Error ("no ali file given for link");
1526 end if;
1527
1528 if not Is_Regular_File (Ali_File_Name.all) then
1529 Exit_With_Error (Ali_File_Name.all & " not found");
1530 end if;
1531
1532 -- Read the ALI file of the main subprogram if the binder generated file
1533 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1534 -- back end switches from this ALI file and use these switches to compile
1535 -- the binder generated file
1536
1537 if Compile_Bind_File and then Standard_Gcc then
1538 Initialize_ALI;
1539 Name_Len := Ali_File_Name'Length;
1540 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
1541
1542 declare
1543 use Types;
1544 F : constant File_Name_Type := Name_Find;
1545 T : Text_Buffer_Ptr;
1546 A : ALI_Id;
1547
1548 begin
1549 -- Load the ALI file
1550
1551 T := Read_Library_Info (F, True);
1552
1553 -- Read it. Note that we ignore errors, since we only want very
1554 -- limited information from the ali file, and likely a slightly
1555 -- wrong version will be just fine, though in normal operation
1556 -- we don't expect this to happen!
1557
1558 A := Scan_ALI
1559 (F,
1560 T,
1561 Ignore_ED => False,
1562 Err => False,
1563 Ignore_Errors => True);
1564
1565 if A /= No_ALI_Id then
1566 for
1567 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
1568 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
1569 loop
1570 -- Do not compile with the front end switches. However, --RTS
1571 -- is to be dealt with specially because it needs to be passed
1572 -- if the binder-generated file is in Ada and may also be used
1573 -- to drive the linker.
1574
1575 declare
1576 Arg : String_Ptr renames Args.Table (Index);
1577 begin
1578 if not Is_Front_End_Switch (Arg.all) then
1579 Binder_Options_From_ALI.Increment_Last;
1580 Binder_Options_From_ALI.Table
1581 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1582
1583 elsif Arg'Length > 5
1584 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
1585 then
1586 Binder_Options_From_ALI.Increment_Last;
1587 Binder_Options_From_ALI.Table
1588 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1589
1590 -- Set the RTS_*_Path_Name variables, so that
1591 -- the correct directories will be set when
1592 -- Osint.Add_Default_Search_Dirs will be called later.
1593
1594 Opt.RTS_Src_Path_Name :=
1595 Get_RTS_Search_Dir
1596 (Arg (Arg'First + 6 .. Arg'Last), Include);
1597
1598 Opt.RTS_Lib_Path_Name :=
1599 Get_RTS_Search_Dir
1600 (Arg (Arg'First + 6 .. Arg'Last), Objects);
1601
1602 -- GNAT doesn't support the GCC multilib mechanism.
1603 -- This means that, when a multilib switch is used
1604 -- to request a particular compilation mode, the
1605 -- corresponding runtime switch (--RTS) must also be
1606 -- specified. The long-term goal is to fully support the
1607 -- multilib mechanism; however, in the meantime, it is
1608 -- convenient to eliminate the redundancy by keying the
1609 -- compilation mode on a single switch, namely --RTS.
1610
1611 -- Pass -mrtp to the linker if --RTS=rtp was passed
1612
1613 if Arg'Length > 8
1614 and then
1615 (Arg (Arg'First + 6 .. Arg'First + 8) = "rtp"
1616 or else Arg (Arg'Last - 2 .. Arg'Last) = "rtp")
1617 then
1618 Linker_Options.Increment_Last;
1619 Linker_Options.Table (Linker_Options.Last) :=
1620 new String'("-mrtp");
1621 end if;
1622 end if;
1623 end;
1624 end loop;
1625 end if;
1626 end;
1627 end if;
1628
1629 -- Get target parameters
1630
1631 Osint.Add_Default_Search_Dirs;
1632 Targparm.Get_Target_Parameters;
1633
1634 if VM_Target /= No_VM then
1635 case VM_Target is
1636 when JVM_Target => Gcc := new String'("jvm-gnatcompile");
1637 when CLI_Target => Gcc := new String'("dotnet-gnatcompile");
1638 when No_VM => raise Program_Error;
1639 end case;
1640 end if;
1641
1642 -- Compile the bind file with the following switches:
1643
1644 -- -gnatA stops reading gnat.adc, since we don't know what
1645 -- pragmas would work, and we do not need it anyway.
1646
1647 -- -gnatWb allows brackets coding for wide characters
1648
1649 -- -gnatiw allows wide characters in identifiers. This is needed
1650 -- because bindgen uses brackets encoding for all upper
1651 -- half and wide characters in identifier names.
1652
1653 -- In addition, in CodePeer mode compile with -x adascil -gnatcC
1654
1655 Binder_Options_From_ALI.Increment_Last;
1656 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1657 new String'("-gnatA");
1658 Binder_Options_From_ALI.Increment_Last;
1659 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1660 new String'("-gnatWb");
1661 Binder_Options_From_ALI.Increment_Last;
1662 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1663 new String'("-gnatiw");
1664
1665 if Opt.CodePeer_Mode then
1666 Binder_Options_From_ALI.Increment_Last;
1667 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1668 new String'("-x");
1669 Binder_Options_From_ALI.Increment_Last;
1670 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1671 new String'("adascil");
1672 Binder_Options_From_ALI.Increment_Last;
1673 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1674 new String'("-gnatcC");
1675 end if;
1676
1677 -- Locate all the necessary programs and verify required files are present
1678
1679 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1680
1681 if Gcc_Path = null then
1682 Exit_With_Error ("Couldn't locate " & Gcc.all);
1683 end if;
1684
1685 if Linker_Path = null then
1686 if VM_Target = CLI_Target then
1687 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld");
1688
1689 if Linker_Path = null then
1690 Exit_With_Error ("Couldn't locate dotnet-ld");
1691 end if;
1692
1693 elsif RTX_RTSS_Kernel_Module_On_Target then
1694
1695 -- Use Microsoft linker for RTSS modules
1696
1697 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link");
1698
1699 if Linker_Path = null then
1700 Exit_With_Error ("Couldn't locate link");
1701 end if;
1702
1703 else
1704 Linker_Path := Gcc_Path;
1705 end if;
1706 end if;
1707
1708 Write_Header;
1709
1710 -- If no output name specified, then use the base name of .ali file name
1711
1712 if Output_File_Name = null then
1713 Output_File_Name :=
1714 new String'(Base_Name (Ali_File_Name.all)
1715 & Get_Target_Debuggable_Suffix.all);
1716 end if;
1717
1718 if RTX_RTSS_Kernel_Module_On_Target then
1719 Linker_Options.Increment_Last;
1720 Linker_Options.Table (Linker_Options.Last) :=
1721 new String'("/OUT:" & Output_File_Name.all);
1722
1723 else
1724 Linker_Options.Increment_Last;
1725 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
1726
1727 Linker_Options.Increment_Last;
1728 Linker_Options.Table (Linker_Options.Last) :=
1729 new String'(Output_File_Name.all);
1730 end if;
1731
1732 Check_Existing_Executable (Output_File_Name.all);
1733
1734 -- Warn if main program is called "test", as that may be a built-in command
1735 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1736 -- will not appear. However, do not warn in the case of a cross compiler.
1737
1738 -- Assume this is a cross tool if the executable name is not gnatlink
1739
1740 if Base_Name (Command_Name) = "gnatlink"
1741 and then Output_File_Name.all = "test"
1742 then
1743 Error_Msg ("warning: executable name """ & Output_File_Name.all
1744 & """ may conflict with shell command");
1745 end if;
1746
1747 -- If -M switch was specified, add the switches to create the map file
1748
1749 if Create_Map_File then
1750 declare
1751 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
1752 Switches : String_List_Access;
1753
1754 begin
1755 Convert (Map_File, Map_Name, Switches);
1756
1757 if Switches /= null then
1758 for J in Switches'Range loop
1759 Linker_Options.Increment_Last;
1760 Linker_Options.Table (Linker_Options.Last) := Switches (J);
1761 end loop;
1762 end if;
1763 end;
1764 end if;
1765
1766 -- Perform consistency checks
1767
1768 -- Transform the .ali file name into the binder output file name
1769
1770 Make_Binder_File_Names : declare
1771 Fname : constant String := Base_Name (Ali_File_Name.all);
1772 Fname_Len : Integer := Fname'Length;
1773
1774 function Get_Maximum_File_Name_Length return Integer;
1775 pragma Import (C, Get_Maximum_File_Name_Length,
1776 "__gnat_get_maximum_file_name_length");
1777
1778 Maximum_File_Name_Length : constant Integer :=
1779 Get_Maximum_File_Name_Length;
1780
1781 Bind_File_Prefix : Types.String_Ptr;
1782 -- Contains prefix used for bind files
1783
1784 begin
1785 -- Set prefix
1786
1787 if OpenVMS_On_Target then
1788 Bind_File_Prefix := new String'("b__");
1789 else
1790 Bind_File_Prefix := new String'("b~");
1791 end if;
1792
1793 -- If the length of the binder file becomes too long due to
1794 -- the addition of the "b?" prefix, then truncate it.
1795
1796 if Maximum_File_Name_Length > 0 then
1797 while Fname_Len >
1798 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1799 loop
1800 Fname_Len := Fname_Len - 1;
1801 end loop;
1802 end if;
1803
1804 declare
1805 Fnam : constant String :=
1806 Bind_File_Prefix.all &
1807 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1808
1809 begin
1810 Binder_Spec_Src_File := new String'(Fnam & ".ads");
1811 Binder_Body_Src_File := new String'(Fnam & ".adb");
1812 Binder_Ali_File := new String'(Fnam & ".ali");
1813
1814 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
1815 end;
1816
1817 if Fname_Len /= Fname'Length then
1818 Binder_Options.Increment_Last;
1819 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1820 Binder_Options.Increment_Last;
1821 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
1822 end if;
1823 end Make_Binder_File_Names;
1824
1825 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
1826
1827 -- Compile the binder file. This is fast, so we always do it, unless
1828 -- specifically told not to by the -n switch
1829
1830 if Compile_Bind_File then
1831 Bind_Step : declare
1832 Success : Boolean;
1833 Args : Argument_List
1834 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
1835
1836 begin
1837 for J in 1 .. Binder_Options_From_ALI.Last loop
1838 Args (J) := Binder_Options_From_ALI.Table (J);
1839 end loop;
1840
1841 for J in 1 .. Binder_Options.Last loop
1842 Args (Binder_Options_From_ALI.Last + J) :=
1843 Binder_Options.Table (J);
1844 end loop;
1845
1846 -- Use the full path of the binder generated source, so that it is
1847 -- guaranteed that the debugger will find this source, even with
1848 -- STABS.
1849
1850 Args (Args'Last) :=
1851 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1852
1853 if Verbose_Mode then
1854 Write_Str (Base_Name (Gcc_Path.all));
1855
1856 for J in Args'Range loop
1857 Write_Str (" ");
1858 Write_Str (Args (J).all);
1859 end loop;
1860
1861 Write_Eol;
1862 end if;
1863
1864 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1865
1866 if not Success then
1867 Exit_Program (E_Fatal);
1868 end if;
1869 end Bind_Step;
1870 end if;
1871
1872 -- In CodePeer mode, there's nothing left to do after the binder file has
1873 -- been compiled.
1874
1875 if Opt.CodePeer_Mode then
1876 return;
1877 end if;
1878
1879 -- Now, actually link the program
1880
1881 -- Skip this step for now on JVM since the Java interpreter will do
1882 -- the actual link at run time. We might consider packing all class files
1883 -- in a .zip file during this step.
1884
1885 if VM_Target /= JVM_Target then
1886 Link_Step : declare
1887 Num_Args : Natural :=
1888 (Linker_Options.Last - Linker_Options.First + 1) +
1889 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1890 (Linker_Objects.Last - Linker_Objects.First + 1);
1891 Stack_Op : Boolean := False;
1892 IDENT_Op : Boolean := False;
1893
1894 begin
1895 if AAMP_On_Target then
1896
1897 -- Remove extraneous flags not relevant for AAMP
1898
1899 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1900 if Linker_Options.Table (J)'Length = 0
1901 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1902 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1903 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1904 or else Linker_Options.Table (J) (1 .. 2) = "-g"
1905 then
1906 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1907 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1908 Linker_Options.Decrement_Last;
1909 Num_Args := Num_Args - 1;
1910 end if;
1911 end loop;
1912
1913 elsif RTX_RTSS_Kernel_Module_On_Target then
1914
1915 -- Remove flags not relevant for Microsoft linker and adapt some
1916 -- others.
1917
1918 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1919
1920 -- Remove flags that are not accepted
1921
1922 if Linker_Options.Table (J)'Length = 0
1923 or else Linker_Options.Table (J) (1 .. 2) = "-l"
1924 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1925 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1926 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1927 or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker"
1928 or else Linker_Options.Table (J) (1 .. 9) = "-mthreads"
1929 then
1930 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1931 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1932 Linker_Options.Decrement_Last;
1933 Num_Args := Num_Args - 1;
1934
1935 -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by
1936 -- Windows "\".
1937 elsif Linker_Options.Table (J) (1 .. 2) = "-L" then
1938 declare
1939 Libpath_Option : constant String_Access := new String'
1940 ("/LIBPATH:" &
1941 Linker_Options.Table (J)
1942 (3 .. Linker_Options.Table (J).all'Last));
1943 begin
1944 for Index in 10 .. Libpath_Option'Last loop
1945 if Libpath_Option (Index) = '/' then
1946 Libpath_Option (Index) := '\';
1947 end if;
1948 end loop;
1949
1950 Linker_Options.Table (J) := Libpath_Option;
1951 end;
1952
1953 -- Replace "-g" by "/DEBUG"
1954 elsif Linker_Options.Table (J) (1 .. 2) = "-g" then
1955 Linker_Options.Table (J) := new String'("/DEBUG");
1956
1957 -- Replace "-o" by "/OUT:"
1958 elsif Linker_Options.Table (J) (1 .. 2) = "-o" then
1959 Linker_Options.Table (J + 1) := new String'
1960 ("/OUT:" & Linker_Options.Table (J + 1).all);
1961
1962 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1963 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1964 Linker_Options.Decrement_Last;
1965 Num_Args := Num_Args - 1;
1966
1967 -- Replace "--stack=" by "/STACK:"
1968 elsif Linker_Options.Table (J) (1 .. 8) = "--stack=" then
1969 Linker_Options.Table (J) := new String'
1970 ("/STACK:" &
1971 Linker_Options.Table (J)
1972 (9 .. Linker_Options.Table (J).all'Last));
1973
1974 -- Replace "-v" by its counterpart "/VERBOSE"
1975 elsif Linker_Options.Table (J) (1 .. 2) = "-v" then
1976 Linker_Options.Table (J) := new String'("/VERBOSE");
1977 end if;
1978 end loop;
1979
1980 -- Add some required flags to create RTSS modules
1981
1982 declare
1983 Flags_For_Linker : constant array (1 .. 17) of String_Access :=
1984 (new String'("/NODEFAULTLIB"),
1985 new String'("/INCREMENTAL:NO"),
1986 new String'("/NOLOGO"),
1987 new String'("/DRIVER"),
1988 new String'("/ALIGN:0x20"),
1989 new String'("/SUBSYSTEM:NATIVE"),
1990 new String'("/ENTRY:_RtapiProcessEntryCRT@8"),
1991 new String'("/RELEASE"),
1992 new String'("startupCRT.obj"),
1993 new String'("rtxlibcmt.lib"),
1994 new String'("oldnames.lib"),
1995 new String'("rtapi_rtss.lib"),
1996 new String'("Rtx_Rtss.lib"),
1997 new String'("libkernel32.a"),
1998 new String'("libws2_32.a"),
1999 new String'("libmswsock.a"),
2000 new String'("libadvapi32.a"));
2001 -- These flags need to be passed to Microsoft linker. They
2002 -- come from the RTX documentation.
2003
2004 Gcc_Lib_Path : constant String_Access := new String'
2005 ("/LIBPATH:" & Include_Dir_Default_Prefix & "\..\");
2006 -- Place to look for gcc related libraries, such as libgcc
2007
2008 begin
2009 -- Replace UNIX "/" by Windows "\" in the path
2010
2011 for Index in 10 .. Gcc_Lib_Path.all'Last loop
2012 if Gcc_Lib_Path (Index) = '/' then
2013 Gcc_Lib_Path (Index) := '\';
2014 end if;
2015 end loop;
2016
2017 Linker_Options.Increment_Last;
2018 Linker_Options.Table (Linker_Options.Last) := Gcc_Lib_Path;
2019 Num_Args := Num_Args + 1;
2020
2021 for Index in Flags_For_Linker'Range loop
2022 Linker_Options.Increment_Last;
2023 Linker_Options.Table (Linker_Options.Last) :=
2024 Flags_For_Linker (Index);
2025 Num_Args := Num_Args + 1;
2026 end loop;
2027 end;
2028 end if;
2029
2030 -- Remove duplicate stack size setting from the Linker_Options
2031 -- table. The stack setting option "-Xlinker --stack=R,C" can be
2032 -- found in one line when set by a pragma Linker_Options or in two
2033 -- lines ("-Xlinker" then "--stack=R,C") when set on the command
2034 -- line. We also check for the "-Wl,--stack=R" style option.
2035
2036 -- We must remove the second stack setting option instance
2037 -- because the one on the command line will always be the first
2038 -- one. And any subsequent stack setting option will overwrite the
2039 -- previous one. This is done especially for GNAT/NT where we set
2040 -- the stack size for tasking programs by a pragma in the NT
2041 -- specific tasking package System.Task_Primitives.Operations.
2042
2043 -- Note: This is not a FOR loop that runs from Linker_Options.First
2044 -- to Linker_Options.Last, since operations within the loop can
2045 -- modify the length of the table.
2046
2047 Clean_Link_Option_Set : declare
2048 J : Natural := Linker_Options.First;
2049 Shared_Libgcc_Seen : Boolean := False;
2050
2051 begin
2052 while J <= Linker_Options.Last loop
2053
2054 if Linker_Options.Table (J).all = "-Xlinker"
2055 and then J < Linker_Options.Last
2056 and then Linker_Options.Table (J + 1)'Length > 8
2057 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
2058 then
2059 if Stack_Op then
2060 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
2061 Linker_Options.Table (J + 2 .. Linker_Options.Last);
2062 Linker_Options.Decrement_Last;
2063 Linker_Options.Decrement_Last;
2064 Num_Args := Num_Args - 2;
2065
2066 else
2067 Stack_Op := True;
2068 end if;
2069 end if;
2070
2071 -- Remove duplicate -shared-libgcc switch
2072
2073 if Linker_Options.Table (J).all = Shared_Libgcc_String then
2074 if Shared_Libgcc_Seen then
2075 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2076 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2077 Linker_Options.Decrement_Last;
2078 Num_Args := Num_Args - 1;
2079
2080 else
2081 Shared_Libgcc_Seen := True;
2082 end if;
2083 end if;
2084
2085 -- Here we just check for a canonical form that matches the
2086 -- pragma Linker_Options set in the NT runtime.
2087
2088 if (Linker_Options.Table (J)'Length > 17
2089 and then Linker_Options.Table (J) (1 .. 17)
2090 = "-Xlinker --stack=")
2091 or else
2092 (Linker_Options.Table (J)'Length > 12
2093 and then Linker_Options.Table (J) (1 .. 12)
2094 = "-Wl,--stack=")
2095 then
2096 if Stack_Op then
2097 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2098 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2099 Linker_Options.Decrement_Last;
2100 Num_Args := Num_Args - 1;
2101
2102 else
2103 Stack_Op := True;
2104 end if;
2105 end if;
2106
2107 -- Remove duplicate IDENTIFICATION directives (VMS)
2108
2109 if Linker_Options.Table (J)'Length > 29
2110 and then Linker_Options.Table (J) (1 .. 30) =
2111 "--for-linker=--identification="
2112 then
2113 if IDENT_Op then
2114 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2115 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2116 Linker_Options.Decrement_Last;
2117 Num_Args := Num_Args - 1;
2118
2119 else
2120 IDENT_Op := True;
2121 end if;
2122 end if;
2123
2124 J := J + 1;
2125 end loop;
2126
2127 if Linker_Path = Gcc_Path and then VM_Target = No_VM then
2128
2129 -- For systems where the default is to link statically with
2130 -- libgcc, if gcc is not called with -shared-libgcc, call it
2131 -- with -static-libgcc, as there are some platforms where one
2132 -- of these two switches is compulsory to link.
2133
2134 if Shared_Libgcc_Default = 'T'
2135 and then not Shared_Libgcc_Seen
2136 then
2137 Linker_Options.Increment_Last;
2138 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
2139 Num_Args := Num_Args + 1;
2140 end if;
2141
2142 elsif RTX_RTSS_Kernel_Module_On_Target then
2143
2144 -- Force the use of the static libgcc for RTSS modules
2145
2146 Linker_Options.Increment_Last;
2147 Linker_Options.Table (Linker_Options.Last) :=
2148 new String'("libgcc.a");
2149 Num_Args := Num_Args + 1;
2150 end if;
2151
2152 end Clean_Link_Option_Set;
2153
2154 -- Prepare arguments for call to linker
2155
2156 Call_Linker : declare
2157 Success : Boolean;
2158 Args : Argument_List (1 .. Num_Args + 1);
2159 Index : Integer := Args'First;
2160
2161 begin
2162 Args (Index) := Binder_Obj_File;
2163
2164 -- Add the object files and any -largs libraries
2165
2166 for J in Linker_Objects.First .. Linker_Objects.Last loop
2167 Index := Index + 1;
2168 Args (Index) := Linker_Objects.Table (J);
2169 end loop;
2170
2171 -- Add the linker options from the binder file
2172
2173 for J in Linker_Options.First .. Linker_Options.Last loop
2174 Index := Index + 1;
2175 Args (Index) := Linker_Options.Table (J);
2176 end loop;
2177
2178 -- Finally add the libraries from the --GCC= switch
2179
2180 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2181 Index := Index + 1;
2182 Args (Index) := Gcc_Linker_Options.Table (J);
2183 end loop;
2184
2185 if Verbose_Mode then
2186 Write_Str (Linker_Path.all);
2187
2188 for J in Args'Range loop
2189 Write_Str (" ");
2190 Write_Str (Args (J).all);
2191 end loop;
2192
2193 Write_Eol;
2194
2195 -- If we are on very verbose mode (-v -v) and a response file
2196 -- is used we display its content.
2197
2198 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2199 Write_Eol;
2200 Write_Str ("Response file (" &
2201 Tname (Tname'First .. Tname'Last - 1) &
2202 ") content : ");
2203 Write_Eol;
2204
2205 for J in
2206 Response_File_Objects.First ..
2207 Response_File_Objects.Last
2208 loop
2209 Write_Str (Response_File_Objects.Table (J).all);
2210 Write_Eol;
2211 end loop;
2212
2213 Write_Eol;
2214 end if;
2215 end if;
2216
2217 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2218
2219 if Success then
2220
2221 -- Delete the temporary file used in conjunction with linking
2222 -- if one was created. See Process_Bind_File for details.
2223
2224 if Tname_FD /= Invalid_FD then
2225 Delete (Tname);
2226 end if;
2227
2228 else
2229 Error_Msg ("error when calling " & Linker_Path.all);
2230 Exit_Program (E_Fatal);
2231 end if;
2232 end Call_Linker;
2233 end Link_Step;
2234 end if;
2235
2236 -- Only keep the binder output file and it's associated object
2237 -- file if compiling with the -g option. These files are only
2238 -- useful if debugging.
2239
2240 if not Debug_Flag_Present then
2241 Delete (Binder_Ali_File.all & ASCII.NUL);
2242 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2243 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2244
2245 if VM_Target = No_VM then
2246 Delete (Binder_Obj_File.all & ASCII.NUL);
2247 end if;
2248 end if;
2249
2250 Exit_Program (E_Success);
2251
2252 exception
2253 when X : others =>
2254 Write_Line (Exception_Information (X));
2255 Exit_With_Error ("INTERNAL ERROR. Please report");
2256 end Gnatlink;
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