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Daily bump.
[official-gcc.git] / gcc / ada / gnatlink.adb
blob9562b3bbc8d352810e4ea8f1df7f766b2e1aeaaa
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) 1996-2012, 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
908 begin
909 -- If a GNU response file is used, space and backslash need to be
910 -- escaped because they are interpreted as a string separator and
911 -- an escape character respectively by the underlying mechanism.
912 -- On the other hand, quote and double-quote are not escaped since
913 -- they are interpreted as string delimiters on both sides.
914
915 if Using_GNU_response_file then
916 for J in S'Range loop
917 if S (J) = ' ' or else S (J) = '\' then
918 if Write (Tname_FD, ASCII.BACK_SLASH'Address, 1) /= 1 then
919 Success := False;
920 end if;
921 end if;
922
923 if Write (Tname_FD, S (J)'Address, 1) /= 1 then
924 Success := False;
925 end if;
926 end loop;
927
928 else
929 if Write (Tname_FD, S'Address, S'Length) /= S'Length then
930 Success := False;
931 end if;
932 end if;
933
934 if Write (Tname_FD, ASCII.LF'Address, 1) /= 1 then
935 Success := False;
936 end if;
937
938 if not Success then
939 Exit_With_Error ("Error generating response file: disk full");
940 end if;
941 end Write_RF;
942
943 -- Start of processing for Process_Binder_File
944
945 begin
946 Fd := fopen (Name'Address, Read_Mode'Address);
947
948 if Fd = NULL_Stream then
949 Exit_With_Error ("Failed to open binder output");
950 end if;
951
952 -- Skip up to the Begin Info line
953
954 loop
955 Get_Next_Line;
956 exit when Next_Line (Nfirst .. Nlast) = Begin_Info;
957 end loop;
958
959 loop
960 Get_Next_Line;
961
962 -- Go to end when end line is reached (this will happen in
963 -- High_Integrity_Mode where no -L switches are generated)
964
965 exit when Next_Line (Nfirst .. Nlast) = End_Info;
966
967 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
968 Nlast := Nlast - 8;
969
970 -- Go to next section when switches are reached
971
972 exit when Next_Line (1) = '-';
973
974 -- Otherwise we have another object file to collect
975
976 Linker_Objects.Increment_Last;
977
978 -- Mark the positions of first and last object files in case they
979 -- need to be placed with a named file on systems having linker
980 -- line limitations.
981
982 if Objs_Begin = 0 then
983 Objs_Begin := Linker_Objects.Last;
984 end if;
985
986 Linker_Objects.Table (Linker_Objects.Last) :=
987 new String'(Next_Line (Nfirst .. Nlast));
988
989 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
990 -- Nlast - Nfirst + 1, for the size, plus one for the space between
991 -- each arguments.
992 end loop;
993
994 Objs_End := Linker_Objects.Last;
995
996 -- Continue to compute the Link_Bytes, the linker options are part of
997 -- command line length.
998
999 Store_File_Context;
1000
1001 while Next_Line (Nfirst .. Nlast) /= End_Info loop
1002 Link_Bytes := Link_Bytes + Nlast - Nfirst + 2;
1003 Get_Next_Line;
1004 end loop;
1005
1006 Rollback_File_Context;
1007
1008 -- On systems that have limitations on handling very long linker lines
1009 -- we make use of the system linker option which takes a list of object
1010 -- file names from a file instead of the command line itself. What we do
1011 -- is to replace the list of object files by the special linker option
1012 -- which then reads the object file list from a file instead. The option
1013 -- to read from a file instead of the command line is only triggered if
1014 -- a conservative threshold is passed.
1015
1016 if Object_List_File_Required
1017 or else (Object_List_File_Supported
1018 and then Link_Bytes > Link_Max)
1019 then
1020 -- Create a temporary file containing the Ada user object files
1021 -- needed by the link. This list is taken from the bind file and is
1022 -- output one object per line for maximal compatibility with linkers
1023 -- supporting this option.
1024
1025 Create_Temp_File (Tname_FD, Tname);
1026
1027 -- ??? File descriptor should be checked to not be Invalid_FD.
1028 -- ??? Status of Write and Close operations should be checked, and
1029 -- failure should occur if a status is wrong.
1030
1031 for J in Objs_Begin .. Objs_End loop
1032 Write_RF (Linker_Objects.Table (J).all);
1033
1034 Response_File_Objects.Increment_Last;
1035 Response_File_Objects.Table (Response_File_Objects.Last) :=
1036 Linker_Objects.Table (J);
1037 end loop;
1038
1039 Close (Tname_FD, Closing_Status);
1040
1041 -- Add the special objects list file option together with the name
1042 -- of the temporary file (removing the null character) to the objects
1043 -- file table.
1044
1045 Linker_Objects.Table (Objs_Begin) :=
1046 new String'(Object_File_Option &
1047 Tname (Tname'First .. Tname'Last - 1));
1048
1049 -- The slots containing these object file names are then removed
1050 -- from the objects table so they do not appear in the link. They are
1051 -- removed by moving up the linker options and non-Ada object files
1052 -- appearing after the Ada object list in the table.
1053
1054 declare
1055 N : Integer;
1056
1057 begin
1058 N := Objs_End - Objs_Begin + 1;
1059
1060 for J in Objs_End + 1 .. Linker_Objects.Last loop
1061 Linker_Objects.Table (J - N + 1) := Linker_Objects.Table (J);
1062 end loop;
1063
1064 Linker_Objects.Set_Last (Linker_Objects.Last - N + 1);
1065 end;
1066 end if;
1067
1068 -- Process switches and options
1069
1070 if Next_Line (Nfirst .. Nlast) /= End_Info then
1071 Xlinker_Was_Previous := False;
1072
1073 loop
1074 if Xlinker_Was_Previous
1075 or else Next_Line (Nfirst .. Nlast) = "-Xlinker"
1076 then
1077 Linker_Options.Increment_Last;
1078 Linker_Options.Table (Linker_Options.Last) :=
1079 new String'(Next_Line (Nfirst .. Nlast));
1080
1081 elsif Next_Line (Nfirst .. Nlast) = "-static" then
1082 GNAT_Static := True;
1083
1084 elsif Next_Line (Nfirst .. Nlast) = "-shared" then
1085 GNAT_Shared := True;
1086
1087 -- Add binder options only if not already set on the command line.
1088 -- This rule is a way to control the linker options order.
1089
1090 -- The following test needs comments, why is it VMS specific.
1091 -- The above comment looks out of date ???
1092
1093 elsif not (OpenVMS_On_Target
1094 and then
1095 Is_Option_Present (Next_Line (Nfirst .. Nlast)))
1096 then
1097 if Nlast > Nfirst + 2 and then
1098 Next_Line (Nfirst .. Nfirst + 1) = "-L"
1099 then
1100 -- Construct a library search path for use later to locate
1101 -- static gnatlib libraries.
1102
1103 if Libpath.Last > 1 then
1104 Libpath.Increment_Last;
1105 Libpath.Table (Libpath.Last) := Path_Separator;
1106 end if;
1107
1108 for I in Nfirst + 2 .. Nlast loop
1109 Libpath.Increment_Last;
1110 Libpath.Table (Libpath.Last) := Next_Line (I);
1111 end loop;
1112
1113 Linker_Options.Increment_Last;
1114
1115 Linker_Options.Table (Linker_Options.Last) :=
1116 new String'(Next_Line (Nfirst .. Nlast));
1117
1118 elsif Next_Line (Nfirst .. Nlast) = "-ldecgnat"
1119 or else Next_Line (Nfirst .. Nlast) = "-lgnarl"
1120 or else Next_Line (Nfirst .. Nlast) = "-lgnat"
1121 or else Next_Line
1122 (1 .. Natural'Min (Nlast, 8 + Library_Version'Length)) =
1123 Shared_Lib ("gnarl")
1124 or else Next_Line
1125 (1 .. Natural'Min (Nlast, 7 + Library_Version'Length)) =
1126 Shared_Lib ("gnat")
1127 then
1128 -- If it is a shared library, remove the library version.
1129 -- We will be looking for the static version of the library
1130 -- as it is in the same directory as the shared version.
1131
1132 if Next_Line (Nlast - Library_Version'Length + 1 .. Nlast)
1133 = Library_Version
1134 then
1135 -- Set Last to point to last character before the
1136 -- library version.
1137
1138 Last := Nlast - Library_Version'Length - 1;
1139 else
1140 Last := Nlast;
1141 end if;
1142
1143 -- Given a Gnat standard library, search the library path to
1144 -- find the library location.
1145
1146 -- Shouldn't we abstract a proc here, we are getting awfully
1147 -- heavily nested ???
1148
1149 declare
1150 File_Path : String_Access;
1151
1152 Object_Lib_Extension : constant String :=
1153 Value (Object_Library_Ext_Ptr);
1154
1155 File_Name : constant String := "lib" &
1156 Next_Line (Nfirst + 2 .. Last) &
1157 Object_Lib_Extension;
1158
1159 Run_Path_Opt : constant String :=
1160 Value (Run_Path_Option_Ptr);
1161
1162 GCC_Index : Natural;
1163 Run_Path_Opt_Index : Natural := 0;
1164
1165 begin
1166 File_Path :=
1167 Locate_Regular_File (File_Name,
1168 String (Libpath.Table (1 .. Libpath.Last)));
1169
1170 if File_Path /= null then
1171 if GNAT_Static then
1172
1173 -- If static gnatlib found, explicitly
1174 -- specify to overcome possible linker
1175 -- default usage of shared version.
1176
1177 Linker_Options.Increment_Last;
1178
1179 Linker_Options.Table (Linker_Options.Last) :=
1180 new String'(File_Path.all);
1181
1182 elsif GNAT_Shared then
1183 if Opt.Run_Path_Option then
1184
1185 -- If shared gnatlib desired, add the
1186 -- appropriate system specific switch
1187 -- so that it can be located at runtime.
1188
1189 if Run_Path_Opt'Length /= 0 then
1190
1191 -- Output the system specific linker command
1192 -- that allows the image activator to find
1193 -- the shared library at runtime. Also add
1194 -- path to find libgcc_s.so, if relevant.
1195
1196 declare
1197 Path : String (1 .. File_Path'Length + 15);
1198 Path_Last : constant Natural :=
1199 File_Path'Length;
1200
1201 begin
1202 Path (1 .. File_Path'Length) :=
1203 File_Path.all;
1204
1205 -- To find the location of the shared version
1206 -- of libgcc, we look for "gcc-lib" in the
1207 -- path of the library. However, this
1208 -- subdirectory is no longer present in
1209 -- recent versions of GCC. So, we look for
1210 -- the last subdirectory "lib" in the path.
1211
1212 GCC_Index :=
1213 Index (Path (1 .. Path_Last), "gcc-lib");
1214
1215 if GCC_Index /= 0 then
1216
1217 -- The shared version of libgcc is
1218 -- located in the parent directory.
1219
1220 GCC_Index := GCC_Index - 1;
1221
1222 else
1223 GCC_Index :=
1224 Index
1225 (Path (1 .. Path_Last),
1226 "/lib/");
1227
1228 if GCC_Index = 0 then
1229 GCC_Index :=
1230 Index (Path (1 .. Path_Last),
1231 Directory_Separator &
1232 "lib" &
1233 Directory_Separator);
1234 end if;
1235
1236 -- If we have found a "lib" subdir in
1237 -- the path to libgnat, the possible
1238 -- shared libgcc of interest by default
1239 -- is in libgcc_subdir at the same
1240 -- level.
1241
1242 if GCC_Index /= 0 then
1243 declare
1244 Subdir : constant String :=
1245 Value (Libgcc_Subdir_Ptr);
1246 begin
1247 Path
1248 (GCC_Index + 1 ..
1249 GCC_Index + Subdir'Length) :=
1250 Subdir;
1251 GCC_Index :=
1252 GCC_Index + Subdir'Length;
1253 end;
1254 end if;
1255 end if;
1256
1257 -- Look for an eventual run_path_option in
1258 -- the linker switches.
1259
1260 if Separate_Run_Path_Options then
1261 Linker_Options.Increment_Last;
1262 Linker_Options.Table
1263 (Linker_Options.Last) :=
1264 new String'
1265 (Run_Path_Opt
1266 & File_Path
1267 (1 .. File_Path'Length
1268 - File_Name'Length));
1269
1270 if GCC_Index /= 0 then
1271 Linker_Options.Increment_Last;
1272 Linker_Options.Table
1273 (Linker_Options.Last) :=
1274 new String'
1275 (Run_Path_Opt
1276 & Path (1 .. GCC_Index));
1277 end if;
1278
1279 else
1280 for J in reverse
1281 1 .. Linker_Options.Last
1282 loop
1283 if Linker_Options.Table (J) /= null
1284 and then
1285 Linker_Options.Table (J)'Length
1286 > Run_Path_Opt'Length
1287 and then
1288 Linker_Options.Table (J)
1289 (1 .. Run_Path_Opt'Length) =
1290 Run_Path_Opt
1291 then
1292 -- We have found an already
1293 -- specified run_path_option: we
1294 -- will add to this switch,
1295 -- because only one
1296 -- run_path_option should be
1297 -- specified.
1298
1299 Run_Path_Opt_Index := J;
1300 exit;
1301 end if;
1302 end loop;
1303
1304 -- If there is no run_path_option, we
1305 -- need to add one.
1306
1307 if Run_Path_Opt_Index = 0 then
1308 Linker_Options.Increment_Last;
1309 end if;
1310
1311 if GCC_Index = 0 then
1312 if Run_Path_Opt_Index = 0 then
1313 Linker_Options.Table
1314 (Linker_Options.Last) :=
1315 new String'
1316 (Run_Path_Opt
1317 & File_Path
1318 (1 .. File_Path'Length
1319 - File_Name'Length));
1320
1321 else
1322 Linker_Options.Table
1323 (Run_Path_Opt_Index) :=
1324 new String'
1325 (Linker_Options.Table
1326 (Run_Path_Opt_Index).all
1327 & Path_Separator
1328 & File_Path
1329 (1 .. File_Path'Length
1330 - File_Name'Length));
1331 end if;
1332
1333 else
1334 if Run_Path_Opt_Index = 0 then
1335 Linker_Options.Table
1336 (Linker_Options.Last) :=
1337 new String'
1338 (Run_Path_Opt
1339 & File_Path
1340 (1 .. File_Path'Length
1341 - File_Name'Length)
1342 & Path_Separator
1343 & Path (1 .. GCC_Index));
1344
1345 else
1346 Linker_Options.Table
1347 (Run_Path_Opt_Index) :=
1348 new String'
1349 (Linker_Options.Table
1350 (Run_Path_Opt_Index).all
1351 & Path_Separator
1352 & File_Path
1353 (1 .. File_Path'Length
1354 - File_Name'Length)
1355 & Path_Separator
1356 & Path (1 .. GCC_Index));
1357 end if;
1358 end if;
1359 end if;
1360 end;
1361 end if;
1362 end if;
1363
1364 -- Then we add the appropriate -l switch
1365
1366 Linker_Options.Increment_Last;
1367 Linker_Options.Table (Linker_Options.Last) :=
1368 new String'(Next_Line (Nfirst .. Nlast));
1369 end if;
1370
1371 else
1372 -- If gnatlib library not found, then
1373 -- add it anyway in case some other
1374 -- mechanism may find it.
1375
1376 Linker_Options.Increment_Last;
1377 Linker_Options.Table (Linker_Options.Last) :=
1378 new String'(Next_Line (Nfirst .. Nlast));
1379 end if;
1380 end;
1381 else
1382 Linker_Options.Increment_Last;
1383 Linker_Options.Table (Linker_Options.Last) :=
1384 new String'(Next_Line (Nfirst .. Nlast));
1385 end if;
1386 end if;
1387
1388 Xlinker_Was_Previous := Next_Line (Nfirst .. Nlast) = "-Xlinker";
1389
1390 Get_Next_Line;
1391 exit when Next_Line (Nfirst .. Nlast) = End_Info;
1392
1393 Next_Line (Nfirst .. Nlast - 8) := Next_Line (Nfirst + 8 .. Nlast);
1394 Nlast := Nlast - 8;
1395 end loop;
1396 end if;
1397
1398 -- If -shared was specified, invoke gcc with -shared-libgcc
1399
1400 if GNAT_Shared then
1401 Linker_Options.Increment_Last;
1402 Linker_Options.Table (Linker_Options.Last) := Shared_Libgcc;
1403 end if;
1404
1405 Status := fclose (Fd);
1406 end Process_Binder_File;
1407
1408 -----------
1409 -- Usage --
1410 -----------
1411
1412 procedure Usage is
1413 begin
1414 Write_Str ("Usage: ");
1415 Write_Str (Base_Name (Command_Name));
1416 Write_Str (" switches mainprog.ali [non-Ada-objects] [linker-options]");
1417 Write_Eol;
1418 Write_Eol;
1419 Write_Line (" mainprog.ali the ALI file of the main program");
1420 Write_Eol;
1421 Write_Eol;
1422 Display_Usage_Version_And_Help;
1423 Write_Line (" -f Force object file list to be generated");
1424 Write_Line (" -g Compile binder source file with debug information");
1425 Write_Line (" -n Do not compile the binder source file");
1426 Write_Line (" -P Process files for use by CodePeer");
1427 Write_Line (" -R Do not use a run_path_option");
1428 Write_Line (" -v Verbose mode");
1429 Write_Line (" -v -v Very verbose mode");
1430 Write_Eol;
1431 Write_Line (" -o nam Use 'nam' as the name of the executable");
1432 Write_Line (" -b target Compile the binder source to run on target");
1433 Write_Line (" -Bdir Load compiler executables from dir");
1434
1435 if Is_Supported (Map_File) then
1436 Write_Line (" -Mmap Create map file map");
1437 Write_Line (" -M Create map file mainprog.map");
1438 end if;
1439
1440 Write_Line (" --GCC=comp Use comp as the compiler");
1441 Write_Line (" --LINK=nam Use 'nam' for the linking rather than 'gcc'");
1442 Write_Eol;
1443 Write_Line (" [non-Ada-objects] list of non Ada object files");
1444 Write_Line (" [linker-options] other options for the linker");
1445 end Usage;
1446
1447 ------------------
1448 -- Write_Header --
1449 ------------------
1450
1451 procedure Write_Header is
1452 begin
1453 if Verbose_Mode then
1454 Write_Eol;
1455 Display_Version ("GNATLINK", "1995");
1456 end if;
1457 end Write_Header;
1458
1459 -----------------
1460 -- Write_Usage --
1461 -----------------
1462
1463 procedure Write_Usage is
1464 begin
1465 Write_Header;
1466 Usage;
1467 end Write_Usage;
1468
1469 -- Start of processing for Gnatlink
1470
1471 begin
1472 -- Add the directory where gnatlink is invoked in front of the path, if
1473 -- gnatlink is invoked with directory information. Only do this if the
1474 -- platform is not VMS, where the notion of path does not really exist.
1475
1476 if not Hostparm.OpenVMS then
1477 declare
1478 Command : constant String := Command_Name;
1479
1480 begin
1481 for Index in reverse Command'Range loop
1482 if Command (Index) = Directory_Separator then
1483 declare
1484 Absolute_Dir : constant String :=
1485 Normalize_Pathname
1486 (Command (Command'First .. Index));
1487
1488 PATH : constant String :=
1489 Absolute_Dir &
1490 Path_Separator &
1491 Getenv ("PATH").all;
1492
1493 begin
1494 Setenv ("PATH", PATH);
1495 end;
1496
1497 exit;
1498 end if;
1499 end loop;
1500 end;
1501 end if;
1502
1503 Process_Args;
1504
1505 if Argument_Count = 0
1506 or else (Verbose_Mode and then Argument_Count = 1)
1507 then
1508 Write_Usage;
1509 Exit_Program (E_Fatal);
1510 end if;
1511
1512 -- Initialize packages to be used
1513
1514 Csets.Initialize;
1515 Snames.Initialize;
1516
1517 -- We always compile with -c
1518
1519 Binder_Options_From_ALI.Increment_Last;
1520 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1521 new String'("-c");
1522
1523 if Ali_File_Name = null then
1524 Exit_With_Error ("no ali file given for link");
1525 end if;
1526
1527 if not Is_Regular_File (Ali_File_Name.all) then
1528 Exit_With_Error (Ali_File_Name.all & " not found");
1529 end if;
1530
1531 -- Read the ALI file of the main subprogram if the binder generated file
1532 -- needs to be compiled and no --GCC= switch has been specified. Fetch the
1533 -- back end switches from this ALI file and use these switches to compile
1534 -- the binder generated file
1535
1536 if Compile_Bind_File and then Standard_Gcc then
1537 Initialize_ALI;
1538 Name_Len := Ali_File_Name'Length;
1539 Name_Buffer (1 .. Name_Len) := Ali_File_Name.all;
1540
1541 declare
1542 use Types;
1543 F : constant File_Name_Type := Name_Find;
1544 T : Text_Buffer_Ptr;
1545 A : ALI_Id;
1546
1547 begin
1548 -- Load the ALI file
1549
1550 T := Read_Library_Info (F, True);
1551
1552 -- Read it. Note that we ignore errors, since we only want very
1553 -- limited information from the ali file, and likely a slightly
1554 -- wrong version will be just fine, though in normal operation
1555 -- we don't expect this to happen!
1556
1557 A := Scan_ALI
1558 (F,
1559 T,
1560 Ignore_ED => False,
1561 Err => False,
1562 Ignore_Errors => True);
1563
1564 if A /= No_ALI_Id then
1565 for
1566 Index in Units.Table (ALIs.Table (A).First_Unit).First_Arg ..
1567 Units.Table (ALIs.Table (A).First_Unit).Last_Arg
1568 loop
1569 -- Do not compile with the front end switches. However, --RTS
1570 -- is to be dealt with specially because it needs to be passed
1571 -- if the binder-generated file is in Ada and may also be used
1572 -- to drive the linker.
1573
1574 declare
1575 Arg : String_Ptr renames Args.Table (Index);
1576 begin
1577 if not Is_Front_End_Switch (Arg.all) then
1578 Binder_Options_From_ALI.Increment_Last;
1579 Binder_Options_From_ALI.Table
1580 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1581
1582 elsif Arg'Length > 5
1583 and then Arg (Arg'First + 2 .. Arg'First + 5) = "RTS="
1584 then
1585 Binder_Options_From_ALI.Increment_Last;
1586 Binder_Options_From_ALI.Table
1587 (Binder_Options_From_ALI.Last) := String_Access (Arg);
1588
1589 -- Set the RTS_*_Path_Name variables, so that
1590 -- the correct directories will be set when
1591 -- Osint.Add_Default_Search_Dirs will be called later.
1592
1593 Opt.RTS_Src_Path_Name :=
1594 Get_RTS_Search_Dir
1595 (Arg (Arg'First + 6 .. Arg'Last), Include);
1596
1597 Opt.RTS_Lib_Path_Name :=
1598 Get_RTS_Search_Dir
1599 (Arg (Arg'First + 6 .. Arg'Last), Objects);
1600
1601 -- GNAT doesn't support the GCC multilib mechanism.
1602 -- This means that, when a multilib switch is used
1603 -- to request a particular compilation mode, the
1604 -- corresponding runtime switch (--RTS) must also be
1605 -- specified. The long-term goal is to fully support the
1606 -- multilib mechanism; however, in the meantime, it is
1607 -- convenient to eliminate the redundancy by keying the
1608 -- compilation mode on a single switch, namely --RTS.
1609
1610 -- Pass -mrtp to the linker if --RTS=rtp was passed
1611
1612 if Arg'Length > 8
1613 and then
1614 (Arg (Arg'First + 6 .. Arg'First + 8) = "rtp"
1615 or else Arg (Arg'Last - 2 .. Arg'Last) = "rtp")
1616 then
1617 Linker_Options.Increment_Last;
1618 Linker_Options.Table (Linker_Options.Last) :=
1619 new String'("-mrtp");
1620 end if;
1621 end if;
1622 end;
1623 end loop;
1624 end if;
1625 end;
1626 end if;
1627
1628 -- Get target parameters
1629
1630 Osint.Add_Default_Search_Dirs;
1631 Targparm.Get_Target_Parameters;
1632
1633 if VM_Target /= No_VM then
1634 case VM_Target is
1635 when JVM_Target => Gcc := new String'("jvm-gnatcompile");
1636 when CLI_Target => Gcc := new String'("dotnet-gnatcompile");
1637 when No_VM => raise Program_Error;
1638 end case;
1639 end if;
1640
1641 -- Compile the bind file with the following switches:
1642
1643 -- -gnatA stops reading gnat.adc, since we don't know what
1644 -- pragmas would work, and we do not need it anyway.
1645
1646 -- -gnatWb allows brackets coding for wide characters
1647
1648 -- -gnatiw allows wide characters in identifiers. This is needed
1649 -- because bindgen uses brackets encoding for all upper
1650 -- half and wide characters in identifier names.
1651
1652 -- In addition, in CodePeer mode compile with -gnatcC
1653
1654 Binder_Options_From_ALI.Increment_Last;
1655 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1656 new String'("-gnatA");
1657 Binder_Options_From_ALI.Increment_Last;
1658 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1659 new String'("-gnatWb");
1660 Binder_Options_From_ALI.Increment_Last;
1661 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1662 new String'("-gnatiw");
1663
1664 if Opt.CodePeer_Mode then
1665 Binder_Options_From_ALI.Increment_Last;
1666 Binder_Options_From_ALI.Table (Binder_Options_From_ALI.Last) :=
1667 new String'("-gnatcC");
1668 end if;
1669
1670 -- Locate all the necessary programs and verify required files are present
1671
1672 Gcc_Path := System.OS_Lib.Locate_Exec_On_Path (Gcc.all);
1673
1674 if Gcc_Path = null then
1675 Exit_With_Error ("Couldn't locate " & Gcc.all);
1676 end if;
1677
1678 if Linker_Path = null then
1679 if VM_Target = CLI_Target then
1680 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("dotnet-ld");
1681
1682 if Linker_Path = null then
1683 Exit_With_Error ("Couldn't locate dotnet-ld");
1684 end if;
1685
1686 elsif RTX_RTSS_Kernel_Module_On_Target then
1687
1688 -- Use Microsoft linker for RTSS modules
1689
1690 Linker_Path := System.OS_Lib.Locate_Exec_On_Path ("link");
1691
1692 if Linker_Path = null then
1693 Exit_With_Error ("Couldn't locate link");
1694 end if;
1695
1696 else
1697 Linker_Path := Gcc_Path;
1698 end if;
1699 end if;
1700
1701 Write_Header;
1702
1703 -- If no output name specified, then use the base name of .ali file name
1704
1705 if Output_File_Name = null then
1706 Output_File_Name :=
1707 new String'(Base_Name (Ali_File_Name.all)
1708 & Get_Target_Debuggable_Suffix.all);
1709 end if;
1710
1711 if RTX_RTSS_Kernel_Module_On_Target then
1712 Linker_Options.Increment_Last;
1713 Linker_Options.Table (Linker_Options.Last) :=
1714 new String'("/OUT:" & Output_File_Name.all);
1715
1716 else
1717 Linker_Options.Increment_Last;
1718 Linker_Options.Table (Linker_Options.Last) := new String'("-o");
1719
1720 Linker_Options.Increment_Last;
1721 Linker_Options.Table (Linker_Options.Last) :=
1722 new String'(Output_File_Name.all);
1723 end if;
1724
1725 Check_Existing_Executable (Output_File_Name.all);
1726
1727 -- Warn if main program is called "test", as that may be a built-in command
1728 -- on Unix. On non-Unix systems executables have a suffix, so the warning
1729 -- will not appear. However, do not warn in the case of a cross compiler.
1730
1731 -- Assume this is a cross tool if the executable name is not gnatlink
1732
1733 if Base_Name (Command_Name) = "gnatlink"
1734 and then Output_File_Name.all = "test"
1735 then
1736 Error_Msg ("warning: executable name """ & Output_File_Name.all
1737 & """ may conflict with shell command");
1738 end if;
1739
1740 -- If -M switch was specified, add the switches to create the map file
1741
1742 if Create_Map_File then
1743 declare
1744 Map_Name : constant String := Base_Name (Ali_File_Name.all) & ".map";
1745 Switches : String_List_Access;
1746
1747 begin
1748 Convert (Map_File, Map_Name, Switches);
1749
1750 if Switches /= null then
1751 for J in Switches'Range loop
1752 Linker_Options.Increment_Last;
1753 Linker_Options.Table (Linker_Options.Last) := Switches (J);
1754 end loop;
1755 end if;
1756 end;
1757 end if;
1758
1759 -- Perform consistency checks
1760
1761 -- Transform the .ali file name into the binder output file name
1762
1763 Make_Binder_File_Names : declare
1764 Fname : constant String := Base_Name (Ali_File_Name.all);
1765 Fname_Len : Integer := Fname'Length;
1766
1767 function Get_Maximum_File_Name_Length return Integer;
1768 pragma Import (C, Get_Maximum_File_Name_Length,
1769 "__gnat_get_maximum_file_name_length");
1770
1771 Maximum_File_Name_Length : constant Integer :=
1772 Get_Maximum_File_Name_Length;
1773
1774 Bind_File_Prefix : Types.String_Ptr;
1775 -- Contains prefix used for bind files
1776
1777 begin
1778 -- Set prefix
1779
1780 if OpenVMS_On_Target then
1781 Bind_File_Prefix := new String'("b__");
1782 else
1783 Bind_File_Prefix := new String'("b~");
1784 end if;
1785
1786 -- If the length of the binder file becomes too long due to
1787 -- the addition of the "b?" prefix, then truncate it.
1788
1789 if Maximum_File_Name_Length > 0 then
1790 while Fname_Len >
1791 Maximum_File_Name_Length - Bind_File_Prefix.all'Length
1792 loop
1793 Fname_Len := Fname_Len - 1;
1794 end loop;
1795 end if;
1796
1797 declare
1798 Fnam : constant String :=
1799 Bind_File_Prefix.all &
1800 Fname (Fname'First .. Fname'First + Fname_Len - 1);
1801
1802 begin
1803 Binder_Spec_Src_File := new String'(Fnam & ".ads");
1804 Binder_Body_Src_File := new String'(Fnam & ".adb");
1805 Binder_Ali_File := new String'(Fnam & ".ali");
1806
1807 Binder_Obj_File := new String'(Fnam & Get_Target_Object_Suffix.all);
1808 end;
1809
1810 if Fname_Len /= Fname'Length then
1811 Binder_Options.Increment_Last;
1812 Binder_Options.Table (Binder_Options.Last) := new String'("-o");
1813 Binder_Options.Increment_Last;
1814 Binder_Options.Table (Binder_Options.Last) := Binder_Obj_File;
1815 end if;
1816 end Make_Binder_File_Names;
1817
1818 Process_Binder_File (Binder_Body_Src_File.all & ASCII.NUL);
1819
1820 -- Compile the binder file. This is fast, so we always do it, unless
1821 -- specifically told not to by the -n switch
1822
1823 if Compile_Bind_File then
1824 Bind_Step : declare
1825 Success : Boolean;
1826 Args : Argument_List
1827 (1 .. Binder_Options_From_ALI.Last + Binder_Options.Last + 1);
1828
1829 begin
1830 for J in 1 .. Binder_Options_From_ALI.Last loop
1831 Args (J) := Binder_Options_From_ALI.Table (J);
1832 end loop;
1833
1834 for J in 1 .. Binder_Options.Last loop
1835 Args (Binder_Options_From_ALI.Last + J) :=
1836 Binder_Options.Table (J);
1837 end loop;
1838
1839 -- Use the full path of the binder generated source, so that it is
1840 -- guaranteed that the debugger will find this source, even with
1841 -- STABS.
1842
1843 Args (Args'Last) :=
1844 new String'(Normalize_Pathname (Binder_Body_Src_File.all));
1845
1846 if Verbose_Mode then
1847 Write_Str (Base_Name (Gcc_Path.all));
1848
1849 for J in Args'Range loop
1850 Write_Str (" ");
1851 Write_Str (Args (J).all);
1852 end loop;
1853
1854 Write_Eol;
1855 end if;
1856
1857 System.OS_Lib.Spawn (Gcc_Path.all, Args, Success);
1858
1859 if not Success then
1860 Exit_Program (E_Fatal);
1861 end if;
1862 end Bind_Step;
1863 end if;
1864
1865 -- In CodePeer mode, there's nothing left to do after the binder file has
1866 -- been compiled.
1867
1868 if Opt.CodePeer_Mode then
1869 return;
1870 end if;
1871
1872 -- Now, actually link the program
1873
1874 -- Skip this step for now on JVM since the Java interpreter will do
1875 -- the actual link at run time. We might consider packing all class files
1876 -- in a .zip file during this step.
1877
1878 if VM_Target /= JVM_Target then
1879 Link_Step : declare
1880 Num_Args : Natural :=
1881 (Linker_Options.Last - Linker_Options.First + 1) +
1882 (Gcc_Linker_Options.Last - Gcc_Linker_Options.First + 1) +
1883 (Linker_Objects.Last - Linker_Objects.First + 1);
1884 Stack_Op : Boolean := False;
1885 IDENT_Op : Boolean := False;
1886
1887 begin
1888 if AAMP_On_Target then
1889
1890 -- Remove extraneous flags not relevant for AAMP
1891
1892 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1893 if Linker_Options.Table (J)'Length = 0
1894 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1895 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1896 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1897 or else Linker_Options.Table (J) (1 .. 2) = "-g"
1898 then
1899 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1900 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1901 Linker_Options.Decrement_Last;
1902 Num_Args := Num_Args - 1;
1903 end if;
1904 end loop;
1905
1906 elsif RTX_RTSS_Kernel_Module_On_Target then
1907
1908 -- Remove flags not relevant for Microsoft linker and adapt some
1909 -- others.
1910
1911 for J in reverse Linker_Options.First .. Linker_Options.Last loop
1912
1913 -- Remove flags that are not accepted
1914
1915 if Linker_Options.Table (J)'Length = 0
1916 or else Linker_Options.Table (J) (1 .. 2) = "-l"
1917 or else Linker_Options.Table (J) (1 .. 3) = "-Wl"
1918 or else Linker_Options.Table (J) (1 .. 3) = "-sh"
1919 or else Linker_Options.Table (J) (1 .. 2) = "-O"
1920 or else Linker_Options.Table (J) (1 .. 8) = "-Xlinker"
1921 or else Linker_Options.Table (J) (1 .. 9) = "-mthreads"
1922 then
1923 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1924 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1925 Linker_Options.Decrement_Last;
1926 Num_Args := Num_Args - 1;
1927
1928 -- Replace "-L" by its counterpart "/LIBPATH:" and UNIX "/" by
1929 -- Windows "\".
1930 elsif Linker_Options.Table (J) (1 .. 2) = "-L" then
1931 declare
1932 Libpath_Option : constant String_Access := new String'
1933 ("/LIBPATH:" &
1934 Linker_Options.Table (J)
1935 (3 .. Linker_Options.Table (J).all'Last));
1936 begin
1937 for Index in 10 .. Libpath_Option'Last loop
1938 if Libpath_Option (Index) = '/' then
1939 Libpath_Option (Index) := '\';
1940 end if;
1941 end loop;
1942
1943 Linker_Options.Table (J) := Libpath_Option;
1944 end;
1945
1946 -- Replace "-g" by "/DEBUG"
1947 elsif Linker_Options.Table (J) (1 .. 2) = "-g" then
1948 Linker_Options.Table (J) := new String'("/DEBUG");
1949
1950 -- Replace "-o" by "/OUT:"
1951 elsif Linker_Options.Table (J) (1 .. 2) = "-o" then
1952 Linker_Options.Table (J + 1) := new String'
1953 ("/OUT:" & Linker_Options.Table (J + 1).all);
1954
1955 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
1956 Linker_Options.Table (J + 1 .. Linker_Options.Last);
1957 Linker_Options.Decrement_Last;
1958 Num_Args := Num_Args - 1;
1959
1960 -- Replace "--stack=" by "/STACK:"
1961 elsif Linker_Options.Table (J) (1 .. 8) = "--stack=" then
1962 Linker_Options.Table (J) := new String'
1963 ("/STACK:" &
1964 Linker_Options.Table (J)
1965 (9 .. Linker_Options.Table (J).all'Last));
1966
1967 -- Replace "-v" by its counterpart "/VERBOSE"
1968 elsif Linker_Options.Table (J) (1 .. 2) = "-v" then
1969 Linker_Options.Table (J) := new String'("/VERBOSE");
1970 end if;
1971 end loop;
1972
1973 -- Add some required flags to create RTSS modules
1974
1975 declare
1976 Flags_For_Linker : constant array (1 .. 17) of String_Access :=
1977 (new String'("/NODEFAULTLIB"),
1978 new String'("/INCREMENTAL:NO"),
1979 new String'("/NOLOGO"),
1980 new String'("/DRIVER"),
1981 new String'("/ALIGN:0x20"),
1982 new String'("/SUBSYSTEM:NATIVE"),
1983 new String'("/ENTRY:_RtapiProcessEntryCRT@8"),
1984 new String'("/RELEASE"),
1985 new String'("startupCRT.obj"),
1986 new String'("rtxlibcmt.lib"),
1987 new String'("oldnames.lib"),
1988 new String'("rtapi_rtss.lib"),
1989 new String'("Rtx_Rtss.lib"),
1990 new String'("libkernel32.a"),
1991 new String'("libws2_32.a"),
1992 new String'("libmswsock.a"),
1993 new String'("libadvapi32.a"));
1994 -- These flags need to be passed to Microsoft linker. They
1995 -- come from the RTX documentation.
1996
1997 Gcc_Lib_Path : constant String_Access := new String'
1998 ("/LIBPATH:" & Include_Dir_Default_Prefix & "\..\");
1999 -- Place to look for gcc related libraries, such as libgcc
2000
2001 begin
2002 -- Replace UNIX "/" by Windows "\" in the path
2003
2004 for Index in 10 .. Gcc_Lib_Path.all'Last loop
2005 if Gcc_Lib_Path (Index) = '/' then
2006 Gcc_Lib_Path (Index) := '\';
2007 end if;
2008 end loop;
2009
2010 Linker_Options.Increment_Last;
2011 Linker_Options.Table (Linker_Options.Last) := Gcc_Lib_Path;
2012 Num_Args := Num_Args + 1;
2013
2014 for Index in Flags_For_Linker'Range loop
2015 Linker_Options.Increment_Last;
2016 Linker_Options.Table (Linker_Options.Last) :=
2017 Flags_For_Linker (Index);
2018 Num_Args := Num_Args + 1;
2019 end loop;
2020 end;
2021 end if;
2022
2023 -- Remove duplicate stack size setting from the Linker_Options
2024 -- table. The stack setting option "-Xlinker --stack=R,C" can be
2025 -- found in one line when set by a pragma Linker_Options or in two
2026 -- lines ("-Xlinker" then "--stack=R,C") when set on the command
2027 -- line. We also check for the "-Wl,--stack=R" style option.
2028
2029 -- We must remove the second stack setting option instance
2030 -- because the one on the command line will always be the first
2031 -- one. And any subsequent stack setting option will overwrite the
2032 -- previous one. This is done especially for GNAT/NT where we set
2033 -- the stack size for tasking programs by a pragma in the NT
2034 -- specific tasking package System.Task_Primitives.Operations.
2035
2036 -- Note: This is not a FOR loop that runs from Linker_Options.First
2037 -- to Linker_Options.Last, since operations within the loop can
2038 -- modify the length of the table.
2039
2040 Clean_Link_Option_Set : declare
2041 J : Natural := Linker_Options.First;
2042 Shared_Libgcc_Seen : Boolean := False;
2043
2044 begin
2045 while J <= Linker_Options.Last loop
2046
2047 if Linker_Options.Table (J).all = "-Xlinker"
2048 and then J < Linker_Options.Last
2049 and then Linker_Options.Table (J + 1)'Length > 8
2050 and then Linker_Options.Table (J + 1) (1 .. 8) = "--stack="
2051 then
2052 if Stack_Op then
2053 Linker_Options.Table (J .. Linker_Options.Last - 2) :=
2054 Linker_Options.Table (J + 2 .. Linker_Options.Last);
2055 Linker_Options.Decrement_Last;
2056 Linker_Options.Decrement_Last;
2057 Num_Args := Num_Args - 2;
2058
2059 else
2060 Stack_Op := True;
2061 end if;
2062 end if;
2063
2064 -- Remove duplicate -shared-libgcc switch
2065
2066 if Linker_Options.Table (J).all = Shared_Libgcc_String then
2067 if Shared_Libgcc_Seen then
2068 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2069 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2070 Linker_Options.Decrement_Last;
2071 Num_Args := Num_Args - 1;
2072
2073 else
2074 Shared_Libgcc_Seen := True;
2075 end if;
2076 end if;
2077
2078 -- Here we just check for a canonical form that matches the
2079 -- pragma Linker_Options set in the NT runtime.
2080
2081 if (Linker_Options.Table (J)'Length > 17
2082 and then Linker_Options.Table (J) (1 .. 17)
2083 = "-Xlinker --stack=")
2084 or else
2085 (Linker_Options.Table (J)'Length > 12
2086 and then Linker_Options.Table (J) (1 .. 12)
2087 = "-Wl,--stack=")
2088 then
2089 if Stack_Op then
2090 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2091 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2092 Linker_Options.Decrement_Last;
2093 Num_Args := Num_Args - 1;
2094
2095 else
2096 Stack_Op := True;
2097 end if;
2098 end if;
2099
2100 -- Remove duplicate IDENTIFICATION directives (VMS)
2101
2102 if Linker_Options.Table (J)'Length > 29
2103 and then Linker_Options.Table (J) (1 .. 30) =
2104 "--for-linker=--identification="
2105 then
2106 if IDENT_Op then
2107 Linker_Options.Table (J .. Linker_Options.Last - 1) :=
2108 Linker_Options.Table (J + 1 .. Linker_Options.Last);
2109 Linker_Options.Decrement_Last;
2110 Num_Args := Num_Args - 1;
2111
2112 else
2113 IDENT_Op := True;
2114 end if;
2115 end if;
2116
2117 J := J + 1;
2118 end loop;
2119
2120 if Linker_Path = Gcc_Path and then VM_Target = No_VM then
2121
2122 -- For systems where the default is to link statically with
2123 -- libgcc, if gcc is not called with -shared-libgcc, call it
2124 -- with -static-libgcc, as there are some platforms where one
2125 -- of these two switches is compulsory to link.
2126
2127 if Shared_Libgcc_Default = 'T'
2128 and then not Shared_Libgcc_Seen
2129 then
2130 Linker_Options.Increment_Last;
2131 Linker_Options.Table (Linker_Options.Last) := Static_Libgcc;
2132 Num_Args := Num_Args + 1;
2133 end if;
2134
2135 elsif RTX_RTSS_Kernel_Module_On_Target then
2136
2137 -- Force the use of the static libgcc for RTSS modules
2138
2139 Linker_Options.Increment_Last;
2140 Linker_Options.Table (Linker_Options.Last) :=
2141 new String'("libgcc.a");
2142 Num_Args := Num_Args + 1;
2143 end if;
2144
2145 end Clean_Link_Option_Set;
2146
2147 -- Prepare arguments for call to linker
2148
2149 Call_Linker : declare
2150 Success : Boolean;
2151 Args : Argument_List (1 .. Num_Args + 1);
2152 Index : Integer := Args'First;
2153
2154 begin
2155 Args (Index) := Binder_Obj_File;
2156
2157 -- Add the object files and any -largs libraries
2158
2159 for J in Linker_Objects.First .. Linker_Objects.Last loop
2160 Index := Index + 1;
2161 Args (Index) := Linker_Objects.Table (J);
2162 end loop;
2163
2164 -- Add the linker options from the binder file
2165
2166 for J in Linker_Options.First .. Linker_Options.Last loop
2167 Index := Index + 1;
2168 Args (Index) := Linker_Options.Table (J);
2169 end loop;
2170
2171 -- Finally add the libraries from the --GCC= switch
2172
2173 for J in Gcc_Linker_Options.First .. Gcc_Linker_Options.Last loop
2174 Index := Index + 1;
2175 Args (Index) := Gcc_Linker_Options.Table (J);
2176 end loop;
2177
2178 if Verbose_Mode then
2179 Write_Str (Linker_Path.all);
2180
2181 for J in Args'Range loop
2182 Write_Str (" ");
2183 Write_Str (Args (J).all);
2184 end loop;
2185
2186 Write_Eol;
2187
2188 -- If we are on very verbose mode (-v -v) and a response file
2189 -- is used we display its content.
2190
2191 if Very_Verbose_Mode and then Tname_FD /= Invalid_FD then
2192 Write_Eol;
2193 Write_Str ("Response file (" &
2194 Tname (Tname'First .. Tname'Last - 1) &
2195 ") content : ");
2196 Write_Eol;
2197
2198 for J in
2199 Response_File_Objects.First ..
2200 Response_File_Objects.Last
2201 loop
2202 Write_Str (Response_File_Objects.Table (J).all);
2203 Write_Eol;
2204 end loop;
2205
2206 Write_Eol;
2207 end if;
2208 end if;
2209
2210 System.OS_Lib.Spawn (Linker_Path.all, Args, Success);
2211
2212 if Success then
2213
2214 -- Delete the temporary file used in conjunction with linking
2215 -- if one was created. See Process_Bind_File for details.
2216
2217 if Tname_FD /= Invalid_FD then
2218 Delete (Tname);
2219 end if;
2220
2221 else
2222 Error_Msg ("error when calling " & Linker_Path.all);
2223 Exit_Program (E_Fatal);
2224 end if;
2225 end Call_Linker;
2226 end Link_Step;
2227 end if;
2228
2229 -- Only keep the binder output file and it's associated object
2230 -- file if compiling with the -g option. These files are only
2231 -- useful if debugging.
2232
2233 if not Debug_Flag_Present then
2234 Delete (Binder_Ali_File.all & ASCII.NUL);
2235 Delete (Binder_Spec_Src_File.all & ASCII.NUL);
2236 Delete (Binder_Body_Src_File.all & ASCII.NUL);
2237
2238 if VM_Target = No_VM then
2239 Delete (Binder_Obj_File.all & ASCII.NUL);
2240 end if;
2241 end if;
2242
2243 Exit_Program (E_Success);
2244
2245 exception
2246 when X : others =>
2247 Write_Line (Exception_Information (X));
2248 Exit_With_Error ("INTERNAL ERROR. Please report");
2249 end Gnatlink;
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