?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
PR libstdc++/87308 adjust regex used in std::any pretty printer
[official-gcc.git] / gcc / ada / switch-m.adb
blobd2983ab7548568fe54b0fa76acf55fed82bd1dc7
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S W I T C H - M --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2001-2018, 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 with Debug; use Debug;
27 with Osint; use Osint;
28 with Opt; use Opt;
29 with Table;
30
31 with System.Multiprocessors; use System.Multiprocessors;
32
33 package body Switch.M is
34
35 package Normalized_Switches is new Table.Table
36 (Table_Component_Type => String_Access,
37 Table_Index_Type => Integer,
38 Table_Low_Bound => 1,
39 Table_Initial => 20,
40 Table_Increment => 100,
41 Table_Name => "Switch.M.Normalized_Switches");
42 -- This table is used to keep the normalized switches, so that they may be
43 -- reused for subsequent invocations of Normalize_Compiler_Switches with
44 -- similar switches.
45
46 Initial_Number_Of_Switches : constant := 10;
47
48 Global_Switches : Argument_List_Access := null;
49 -- Used by function Normalize_Compiler_Switches
50
51 Subdirs_Option : constant String := "--subdirs=";
52
53 ---------------------------------
54 -- Normalize_Compiler_Switches --
55 ---------------------------------
56
57 procedure Normalize_Compiler_Switches
58 (Switch_Chars : String;
59 Switches : in out Argument_List_Access;
60 Last : out Natural)
61 is
62 Switch_Starts_With_Gnat : Boolean;
63
64 Ptr : Integer := Switch_Chars'First;
65 Max : constant Integer := Switch_Chars'Last;
66 C : Character := ' ';
67
68 Storing : String := Switch_Chars;
69 First_Stored : Positive := Ptr + 1;
70 Last_Stored : Positive := First_Stored;
71
72 procedure Add_Switch_Component (S : String);
73 -- Add a new String_Access component in Switches. If a string equal
74 -- to S is already stored in the table Normalized_Switches, use it.
75 -- Otherwise add a new component to the table.
76
77 --------------------------
78 -- Add_Switch_Component --
79 --------------------------
80
81 procedure Add_Switch_Component (S : String) is
82 begin
83 -- If Switches is null, allocate a new array
84
85 if Switches = null then
86 Switches := new Argument_List (1 .. Initial_Number_Of_Switches);
87
88 -- Otherwise, if Switches is full, extend it
89
90 elsif Last = Switches'Last then
91 declare
92 New_Switches : constant Argument_List_Access :=
93 new Argument_List
94 (1 .. Switches'Length + Switches'Length);
95 begin
96 New_Switches (1 .. Switches'Length) := Switches.all;
97 Last := Switches'Length;
98 Switches := New_Switches;
99 end;
100 end if;
101
102 -- If this is the first switch, Last designates the first component
103
104 if Last = 0 then
105 Last := Switches'First;
106 else
107 Last := Last + 1;
108 end if;
109
110 -- Look into the table Normalized_Switches for a similar string.
111 -- If one is found, put it at the added component, and return.
112
113 for Index in 1 .. Normalized_Switches.Last loop
114 if S = Normalized_Switches.Table (Index).all then
115 Switches (Last) := Normalized_Switches.Table (Index);
116 return;
117 end if;
118 end loop;
119
120 -- No string equal to S was found in the table Normalized_Switches.
121 -- Add a new component in the table.
122
123 Switches (Last) := new String'(S);
124 Normalized_Switches.Append (Switches (Last));
125 end Add_Switch_Component;
126
127 -- Start of processing for Normalize_Compiler_Switches
128
129 begin
130 Last := 0;
131
132 if Ptr = Max or else Switch_Chars (Ptr) /= '-' then
133 return;
134 end if;
135
136 Ptr := Ptr + 1;
137
138 Switch_Starts_With_Gnat :=
139 Ptr + 3 <= Max and then Switch_Chars (Ptr .. Ptr + 3) = "gnat";
140
141 if Switch_Starts_With_Gnat then
142 Ptr := Ptr + 4;
143 First_Stored := Ptr;
144 end if;
145
146 while Ptr <= Max loop
147 C := Switch_Chars (Ptr);
148
149 -- Processing for a switch
150
151 case Switch_Starts_With_Gnat is
152 when False =>
153
154 -- All switches that don't start with -gnat stay as is,
155 -- except -pg, -Wall, -k8, -w
156
157 if Switch_Chars = "-pg" or else Switch_Chars = "-p" then
158
159 -- The gcc driver converts -pg to -p, so that is what
160 -- is stored in the ALI file.
161
162 Add_Switch_Component ("-p");
163
164 elsif Switch_Chars = "-Wall" then
165
166 -- The gcc driver adds -gnatwa when -Wall is used
167
168 Add_Switch_Component ("-gnatwa");
169 Add_Switch_Component ("-Wall");
170
171 elsif Switch_Chars = "-k8" then
172
173 -- The gcc driver transforms -k8 into -gnatk8
174
175 Add_Switch_Component ("-gnatk8");
176
177 elsif Switch_Chars = "-w" then
178
179 -- The gcc driver adds -gnatws when -w is used
180
181 Add_Switch_Component ("-gnatws");
182 Add_Switch_Component ("-w");
183
184 elsif Switch_Chars'Length > 6
185 and then
186 Switch_Chars (Switch_Chars'First .. Switch_Chars'First + 5)
187 = "--RTS="
188 then
189 Add_Switch_Component (Switch_Chars);
190
191 -- When --RTS=mtp is used, the gcc driver adds -mrtp
192
193 if Switch_Chars = "--RTS=mtp" then
194 Add_Switch_Component ("-mrtp");
195 end if;
196
197 -- Special case for -fstack-check (alias for
198 -- -fstack-check=specific)
199
200 elsif Switch_Chars = "-fstack-check" then
201 Add_Switch_Component ("-fstack-check=specific");
202
203 -- Take only into account switches that are transmitted to
204 -- gnat1 by the gcc driver and stored by gnat1 in the ALI file.
205
206 else
207 case C is
208 when 'O' | 'W' | 'w' | 'f' | 'd' | 'g' | 'm' =>
209 Add_Switch_Component (Switch_Chars);
210
211 when others =>
212 null;
213 end case;
214 end if;
215
216 return;
217
218 when True =>
219 case C is
220
221 -- One-letter switches
222
223 when 'a' | 'A' | 'b' | 'B' | 'c' | 'C' | 'E' | 'f' | 'F'
224 | 'g' | 'h' | 'H' | 'I' | 'L' | 'N' | 'p' | 'P' | 'q'
225 | 'Q' | 'r' | 's' | 'S' | 't' | 'u' | 'U' | 'v' | 'x'
226 | 'X' | 'Z'
227 =>
228 Storing (First_Stored) := C;
229 Add_Switch_Component
230 (Storing (Storing'First .. First_Stored));
231 Ptr := Ptr + 1;
232
233 -- One-letter switches followed by a positive number
234
235 when 'D' | 'G' | 'j' | 'k' | 'm' | 'T' =>
236 Storing (First_Stored) := C;
237 Last_Stored := First_Stored;
238
239 if Ptr <= Max and then Switch_Chars (Ptr) = '=' then
240 Ptr := Ptr + 1;
241 end if;
242
243 loop
244 Ptr := Ptr + 1;
245 exit when Ptr > Max
246 or else Switch_Chars (Ptr) not in '0' .. '9';
247 Last_Stored := Last_Stored + 1;
248 Storing (Last_Stored) := Switch_Chars (Ptr);
249 end loop;
250
251 Add_Switch_Component
252 (Storing (Storing'First .. Last_Stored));
253
254 when 'd' =>
255 Storing (First_Stored) := 'd';
256
257 while Ptr < Max loop
258 Ptr := Ptr + 1;
259 C := Switch_Chars (Ptr);
260 exit when C = ASCII.NUL or else C = '/'
261 or else C = '-';
262
263 if C in '1' .. '9' or else
264 C in 'a' .. 'z' or else
265 C in 'A' .. 'Z'
266 then
267 Storing (First_Stored + 1) := C;
268 Add_Switch_Component
269 (Storing (Storing'First .. First_Stored + 1));
270
271 else
272 Last := 0;
273 return;
274 end if;
275 end loop;
276
277 return;
278
279 when 'e' =>
280
281 -- Some of the gnate... switches are not stored
282
283 Storing (First_Stored) := 'e';
284 Ptr := Ptr + 1;
285
286 if Ptr > Max then
287 Last := 0;
288 return;
289
290 else
291 case Switch_Chars (Ptr) is
292 when 'A' =>
293 Ptr := Ptr + 1;
294 Add_Switch_Component ("-gnateA");
295
296 when 'D' =>
297 Storing (First_Stored + 1 ..
298 First_Stored + Max - Ptr + 1) :=
299 Switch_Chars (Ptr .. Max);
300 Add_Switch_Component
301 (Storing (Storing'First ..
302 First_Stored + Max - Ptr + 1));
303 Ptr := Max + 1;
304
305 when 'E' | 'F' | 'G' | 'S' | 'u' | 'V' | 'Y' =>
306 Add_Switch_Component
307 ("-gnate" & Switch_Chars (Ptr));
308 Ptr := Ptr + 1;
309
310 when 'i' | 'I' =>
311 declare
312 First : constant Positive := Ptr;
313
314 begin
315 Ptr := Ptr + 1;
316
317 if Ptr <= Max and then
318 Switch_Chars (Ptr) = '='
319 then
320 Ptr := Ptr + 1;
321 end if;
322
323 while Ptr <= Max and then
324 Switch_Chars (Ptr) in '0' .. '9'
325 loop
326 Ptr := Ptr + 1;
327 end loop;
328
329 Storing (First_Stored + 1 ..
330 First_Stored + Ptr - First) :=
331 Switch_Chars (First .. Ptr - 1);
332 Add_Switch_Component
333 (Storing (Storing'First ..
334 First_Stored + Ptr - First));
335 end;
336
337 when 'l' =>
338 Ptr := Ptr + 1;
339 Add_Switch_Component ("-gnatel");
340
341 when 'L' =>
342 Ptr := Ptr + 1;
343 Add_Switch_Component ("-gnateL");
344
345 when 'p' =>
346 Ptr := Ptr + 1;
347
348 if Ptr = Max then
349 Last := 0;
350 return;
351 end if;
352
353 if Switch_Chars (Ptr) = '=' then
354 Ptr := Ptr + 1;
355 end if;
356
357 -- To normalize, always put a '=' after
358 -- -gnatep. Because that could lengthen the
359 -- switch string, declare a local variable.
360
361 declare
362 To_Store : String (1 .. Max - Ptr + 9);
363 begin
364 To_Store (1 .. 8) := "-gnatep=";
365 To_Store (9 .. Max - Ptr + 9) :=
366 Switch_Chars (Ptr .. Max);
367 Add_Switch_Component (To_Store);
368 end;
369
370 return;
371
372 when others =>
373 Last := 0;
374 return;
375 end case;
376 end if;
377
378 when 'i' =>
379 Storing (First_Stored) := 'i';
380
381 Ptr := Ptr + 1;
382
383 if Ptr > Max then
384 Last := 0;
385 return;
386 end if;
387
388 C := Switch_Chars (Ptr);
389
390 if C in '1' .. '5'
391 or else C = '8'
392 or else C = 'p'
393 or else C = 'f'
394 or else C = 'n'
395 or else C = 'w'
396 then
397 Storing (First_Stored + 1) := C;
398 Add_Switch_Component
399 (Storing (Storing'First .. First_Stored + 1));
400 Ptr := Ptr + 1;
401
402 else
403 Last := 0;
404 return;
405 end if;
406
407 -- -gnatl may be -gnatl=<file name>
408
409 when 'l' =>
410 Ptr := Ptr + 1;
411
412 if Ptr > Max or else Switch_Chars (Ptr) /= '=' then
413 Add_Switch_Component ("-gnatl");
414
415 else
416 Add_Switch_Component
417 ("-gnatl" & Switch_Chars (Ptr .. Max));
418 return;
419 end if;
420
421 -- -gnatn may be -gnatn, -gnatn1, or -gnatn2
422
423 when 'n' =>
424 Last_Stored := First_Stored;
425 Storing (Last_Stored) := 'n';
426 Ptr := Ptr + 1;
427
428 if Ptr <= Max
429 and then Switch_Chars (Ptr) in '1' .. '2'
430 then
431 Last_Stored := Last_Stored + 1;
432 Storing (Last_Stored) := Switch_Chars (Ptr);
433 Ptr := Ptr + 1;
434 end if;
435
436 Add_Switch_Component
437 (Storing (Storing'First .. Last_Stored));
438
439 -- -gnato may be -gnatox or -gnatoxx, with x=0/1/2/3
440
441 when 'o' =>
442 Last_Stored := First_Stored;
443 Storing (Last_Stored) := 'o';
444 Ptr := Ptr + 1;
445
446 if Ptr <= Max
447 and then Switch_Chars (Ptr) in '0' .. '3'
448 then
449 Last_Stored := Last_Stored + 1;
450 Storing (Last_Stored) := Switch_Chars (Ptr);
451 Ptr := Ptr + 1;
452
453 if Ptr <= Max
454 and then Switch_Chars (Ptr) in '0' .. '3'
455 then
456 Last_Stored := Last_Stored + 1;
457 Storing (Last_Stored) := Switch_Chars (Ptr);
458 Ptr := Ptr + 1;
459 end if;
460 end if;
461
462 Add_Switch_Component
463 (Storing (Storing'First .. Last_Stored));
464
465 -- -gnatR may be followed by '0', '1', '2', '3' or '4',
466 -- then by 'e', 'j', 'm' or 's'.
467
468 when 'R' =>
469 Last_Stored := First_Stored;
470 Storing (Last_Stored) := 'R';
471 Ptr := Ptr + 1;
472
473 while Ptr <= Max loop
474 C := Switch_Chars (Ptr);
475
476 case C is
477
478 when '0' .. '4' | 'e' | 'j' | 'm' | 's' =>
479 Last_Stored := Last_Stored + 1;
480 Storing (Last_Stored) := C;
481 Ptr := Ptr + 1;
482
483 when others =>
484 Last := 0;
485 return;
486 end case;
487 end loop;
488
489 Add_Switch_Component
490 (Storing (Storing'First .. Last_Stored));
491
492 -- -gnatWx, x = 'h'. 'u', 's', 'e', '8' or 'b'
493
494 when 'W' =>
495 Storing (First_Stored) := 'W';
496 Ptr := Ptr + 1;
497
498 if Ptr <= Max then
499 case Switch_Chars (Ptr) is
500 when 'h' | 'u' | 's' | 'e' | '8' | 'b' =>
501 Storing (First_Stored + 1) := Switch_Chars (Ptr);
502 Add_Switch_Component
503 (Storing (Storing'First .. First_Stored + 1));
504 Ptr := Ptr + 1;
505
506 when others =>
507 Last := 0;
508 return;
509 end case;
510 end if;
511
512 -- Multiple switches
513
514 when 'V' | 'w' | 'y' =>
515 Storing (First_Stored) := C;
516 Ptr := Ptr + 1;
517
518 if Ptr > Max then
519 if C = 'y' then
520 Add_Switch_Component
521 (Storing (Storing'First .. First_Stored));
522
523 else
524 Last := 0;
525 return;
526 end if;
527 end if;
528
529 -- Loop through remaining switch characters in string
530
531 while Ptr <= Max loop
532 C := Switch_Chars (Ptr);
533 Ptr := Ptr + 1;
534
535 -- -gnatyMxxx
536
537 if C = 'M' and then Storing (First_Stored) = 'y' then
538 Last_Stored := First_Stored + 1;
539 Storing (Last_Stored) := 'M';
540 while Ptr <= Max loop
541 C := Switch_Chars (Ptr);
542 exit when C not in '0' .. '9';
543 Last_Stored := Last_Stored + 1;
544 Storing (Last_Stored) := C;
545 Ptr := Ptr + 1;
546 end loop;
547
548 -- If there is no digit after -gnatyM,
549 -- the switch is invalid.
550
551 if Last_Stored = First_Stored + 1 then
552 Last := 0;
553 return;
554
555 else
556 Add_Switch_Component
557 (Storing (Storing'First .. Last_Stored));
558 end if;
559
560 -- --gnatx.x
561
562 elsif C = '.' and then Ptr <= Max then
563 Storing (First_Stored + 1) := '.';
564 Storing (First_Stored + 2) := Switch_Chars (Ptr);
565 Ptr := Ptr + 1;
566 Add_Switch_Component
567 (Storing (Storing'First .. First_Stored + 2));
568
569 -- All other switches are -gnatxx
570
571 else
572 Storing (First_Stored + 1) := C;
573 Add_Switch_Component
574 (Storing (Storing'First .. First_Stored + 1));
575 end if;
576 end loop;
577
578 -- -gnat95 -gnat05
579
580 when '0' | '9' =>
581 Last_Stored := First_Stored;
582 Storing (Last_Stored) := C;
583 Ptr := Ptr + 1;
584
585 if Ptr /= Max or else Switch_Chars (Ptr) /= '5' then
586
587 -- Invalid switch
588
589 Last := 0;
590 return;
591
592 else
593 Last_Stored := Last_Stored + 1;
594 Storing (Last_Stored) := '5';
595 Add_Switch_Component
596 (Storing (Storing'First .. Last_Stored));
597 Ptr := Ptr + 1;
598 end if;
599
600 -- -gnat12
601
602 when '1' =>
603 Last_Stored := First_Stored;
604 Storing (Last_Stored) := C;
605 Ptr := Ptr + 1;
606
607 if Ptr /= Max or else Switch_Chars (Ptr) /= '2' then
608
609 -- Invalid switch
610
611 Last := 0;
612 return;
613
614 else
615 Last_Stored := Last_Stored + 1;
616 Storing (Last_Stored) := '2';
617 Add_Switch_Component
618 (Storing (Storing'First .. Last_Stored));
619 Ptr := Ptr + 1;
620 end if;
621
622 -- -gnat2005 -gnat2012
623
624 when '2' =>
625 if Ptr + 3 /= Max then
626 Last := 0;
627 return;
628
629 elsif Switch_Chars (Ptr + 1 .. Ptr + 3) = "005" then
630 Last_Stored := First_Stored + 3;
631 Storing (First_Stored .. Last_Stored) := "2005";
632 Add_Switch_Component
633 (Storing (Storing'First .. Last_Stored));
634 Ptr := Max + 1;
635
636 elsif Switch_Chars (Ptr + 1 .. Ptr + 3) = "012" then
637 Last_Stored := First_Stored + 3;
638 Storing (First_Stored .. Last_Stored) := "2012";
639 Add_Switch_Component
640 (Storing (Storing'First .. Last_Stored));
641 Ptr := Max + 1;
642
643 else
644
645 -- Invalid switch
646
647 Last := 0;
648 return;
649
650 end if;
651
652 -- -gnat83
653
654 when '8' =>
655 Last_Stored := First_Stored;
656 Storing (Last_Stored) := '8';
657 Ptr := Ptr + 1;
658
659 if Ptr /= Max or else Switch_Chars (Ptr) /= '3' then
660
661 -- Invalid switch
662
663 Last := 0;
664 return;
665
666 else
667 Last_Stored := Last_Stored + 1;
668 Storing (Last_Stored) := '3';
669 Add_Switch_Component
670 (Storing (Storing'First .. Last_Stored));
671 Ptr := Ptr + 1;
672 end if;
673
674 -- Not a valid switch
675
676 when others =>
677 Last := 0;
678 return;
679 end case;
680 end case;
681 end loop;
682 end Normalize_Compiler_Switches;
683
684 function Normalize_Compiler_Switches
685 (Switch_Chars : String) return Argument_List
686 is
687 Last : Natural;
688
689 begin
690 Normalize_Compiler_Switches (Switch_Chars, Global_Switches, Last);
691
692 if Last = 0 then
693 return (1 .. 0 => null);
694 else
695 return Global_Switches (Global_Switches'First .. Last);
696 end if;
697 end Normalize_Compiler_Switches;
698
699 ------------------------
700 -- Scan_Make_Switches --
701 ------------------------
702
703 procedure Scan_Make_Switches
704 (Switch_Chars : String;
705 Success : out Boolean)
706 is
707 Ptr : Integer := Switch_Chars'First;
708 Max : constant Integer := Switch_Chars'Last;
709 C : Character := ' ';
710
711 begin
712 -- Assume a good switch
713
714 Success := True;
715
716 -- Skip past the initial character (must be the switch character)
717
718 if Ptr = Max then
719 Bad_Switch (Switch_Chars);
720
721 else
722 Ptr := Ptr + 1;
723 end if;
724
725 -- A little check, "gnat" at the start of a switch is for the compiler
726
727 if Switch_Chars'Length >= Ptr + 3
728 and then Switch_Chars (Ptr .. Ptr + 3) = "gnat"
729 then
730 Success := False;
731 return;
732 end if;
733
734 C := Switch_Chars (Ptr);
735
736 -- Multiple character switches
737
738 -- To preserve building gnat_util, it is not possible to use the
739 -- constant Strings declare in Make_Util, as Make_Util is not in
740 -- gnat_util.
741
742 if Switch_Chars'Length > 2 then
743 if Switch_Chars = "--create-missing-dirs" then
744 Setup_Projects := True;
745
746 elsif Switch_Chars'Length > Subdirs_Option'Length
747 and then
748 Switch_Chars
749 (Switch_Chars'First ..
750 Switch_Chars'First + Subdirs_Option'Length - 1) =
751 Subdirs_Option
752 then
753 Subdirs :=
754 new String'(Switch_Chars
755 (Switch_Chars'First + Subdirs_Option'Length ..
756 Switch_Chars'Last));
757
758 elsif Switch_Chars = "--unchecked-shared-lib-imports" then
759 Opt.Unchecked_Shared_Lib_Imports := True;
760
761 elsif Switch_Chars = "--single-compile-per-obj-dir" then
762 Opt.One_Compilation_Per_Obj_Dir := True;
763
764 elsif Switch_Chars = "--no-exit-message" then
765 Opt.No_Exit_Message := True;
766
767 elsif Switch_Chars = "--keep-temp-files" then
768 Opt.Keep_Temporary_Files := True;
769
770 elsif Switch_Chars (Ptr) = '-' then
771 Bad_Switch (Switch_Chars);
772
773 elsif Switch_Chars'Length > 3
774 and then Switch_Chars (Ptr .. Ptr + 1) = "aP"
775 then
776 null;
777 -- This is only used by gprbuild
778
779 elsif C = 'v' and then Switch_Chars'Length = 3 then
780 Ptr := Ptr + 1;
781 Verbose_Mode := True;
782
783 case Switch_Chars (Ptr) is
784 when 'l' => Verbosity_Level := Opt.Low;
785 when 'm' => Verbosity_Level := Opt.Medium;
786 when 'h' => Verbosity_Level := Opt.High;
787 when others => Success := False;
788 end case;
789
790 elsif C = 'd' then
791
792 -- Note: for the debug switch, the remaining characters in this
793 -- switch field must all be debug flags, since all valid switch
794 -- characters are also valid debug characters. This switch is not
795 -- documented on purpose because it is only used by the
796 -- implementors.
797
798 -- Loop to scan out debug flags
799
800 while Ptr < Max loop
801 Ptr := Ptr + 1;
802 C := Switch_Chars (Ptr);
803
804 if C in 'a' .. 'z' or else C in 'A' .. 'Z' then
805 Set_Debug_Flag (C);
806 else
807 Bad_Switch (Switch_Chars);
808 end if;
809 end loop;
810
811 elsif C = 'e' then
812 Ptr := Ptr + 1;
813
814 case Switch_Chars (Ptr) is
815
816 -- Processing for eI switch
817
818 when 'I' =>
819 Ptr := Ptr + 1;
820 Scan_Pos (Switch_Chars, Max, Ptr, Main_Index, C);
821
822 if Ptr <= Max then
823 Bad_Switch (Switch_Chars);
824 end if;
825
826 -- Processing for eL switch
827
828 when 'L' =>
829 if Ptr /= Max then
830 Bad_Switch (Switch_Chars);
831
832 else
833 Follow_Links_For_Files := True;
834 Follow_Links_For_Dirs := True;
835 end if;
836
837 -- Processing for eS switch
838
839 when 'S' =>
840 if Ptr /= Max then
841 Bad_Switch (Switch_Chars);
842
843 else
844 Commands_To_Stdout := True;
845 end if;
846
847 when others =>
848 Bad_Switch (Switch_Chars);
849 end case;
850
851 elsif C = 'j' then
852 Ptr := Ptr + 1;
853
854 declare
855 Max_Proc : Nat;
856
857 begin
858 Scan_Nat (Switch_Chars, Max, Ptr, Max_Proc, C);
859
860 if Ptr <= Max then
861 Bad_Switch (Switch_Chars);
862
863 else
864 if Max_Proc = 0 then
865 Max_Proc := Nat (Number_Of_CPUs);
866
867 if Max_Proc = 0 then
868 Max_Proc := 1;
869 end if;
870 end if;
871
872 Maximum_Processes := Positive (Max_Proc);
873 end if;
874 end;
875
876 elsif C = 'w' and then Switch_Chars'Length = 3 then
877 Ptr := Ptr + 1;
878
879 if Switch_Chars = "-we" then
880 Warning_Mode := Treat_As_Error;
881
882 elsif Switch_Chars = "-wn" then
883 Warning_Mode := Normal;
884
885 elsif Switch_Chars = "-ws" then
886 Warning_Mode := Suppress;
887
888 else
889 Success := False;
890 end if;
891
892 else
893 Success := False;
894 end if;
895
896 -- Single-character switches
897
898 else
899 Check_Switch : begin
900 case C is
901 when 'a' =>
902 Check_Readonly_Files := True;
903
904 -- Processing for b switch
905
906 when 'b' =>
907 Bind_Only := True;
908 Make_Steps := True;
909
910 -- Processing for B switch
911
912 when 'B' =>
913 Build_Bind_And_Link_Full_Project := True;
914
915 -- Processing for c switch
916
917 when 'c' =>
918 Compile_Only := True;
919 Make_Steps := True;
920
921 -- Processing for C switch
922
923 when 'C' =>
924 Opt.Create_Mapping_File := True;
925
926 -- Processing for D switch
927
928 when 'D' =>
929 if Object_Directory_Present then
930 Osint.Fail ("duplicate -D switch");
931
932 else
933 Object_Directory_Present := True;
934 end if;
935
936 -- Processing for f switch
937
938 when 'f' =>
939 Force_Compilations := True;
940
941 -- Processing for F switch
942
943 when 'F' =>
944 Full_Path_Name_For_Brief_Errors := True;
945
946 -- Processing for h switch
947
948 when 'h' =>
949 Usage_Requested := True;
950
951 -- Processing for i switch
952
953 when 'i' =>
954 In_Place_Mode := True;
955
956 -- Processing for j switch
957
958 when 'j' =>
959 -- -j not followed by a number is an error
960
961 Bad_Switch (Switch_Chars);
962
963 -- Processing for k switch
964
965 when 'k' =>
966 Keep_Going := True;
967
968 -- Processing for l switch
969
970 when 'l' =>
971 Link_Only := True;
972 Make_Steps := True;
973
974 -- Processing for M switch
975
976 when 'M' =>
977 List_Dependencies := True;
978
979 -- Processing for n switch
980
981 when 'n' =>
982 Do_Not_Execute := True;
983
984 -- Processing for o switch
985
986 when 'o' =>
987 if Output_File_Name_Present then
988 Osint.Fail ("duplicate -o switch");
989 else
990 Output_File_Name_Present := True;
991 end if;
992
993 -- Processing for p switch
994
995 when 'p' =>
996 Setup_Projects := True;
997
998 -- Processing for q switch
999
1000 when 'q' =>
1001 Quiet_Output := True;
1002
1003 -- Processing for R switch
1004
1005 when 'R' =>
1006 Run_Path_Option := False;
1007
1008 -- Processing for s switch
1009
1010 when 's' =>
1011 Ptr := Ptr + 1;
1012 Check_Switches := True;
1013
1014 -- Processing for v switch
1015
1016 when 'v' =>
1017 Verbose_Mode := True;
1018 Verbosity_Level := Opt.High;
1019
1020 -- Processing for x switch
1021
1022 when 'x' =>
1023 External_Unit_Compilation_Allowed := True;
1024 Use_Include_Path_File := True;
1025
1026 -- Processing for z switch
1027
1028 when 'z' =>
1029 No_Main_Subprogram := True;
1030
1031 -- Any other small letter is an illegal switch
1032
1033 when others =>
1034 if C in 'a' .. 'z' then
1035 Bad_Switch (Switch_Chars);
1036
1037 else
1038 Success := False;
1039 end if;
1040 end case;
1041 end Check_Switch;
1042 end if;
1043 end Scan_Make_Switches;
1044
1045 end Switch.M;
Mirror of the offical gcc git repository hosted at gcc.gnu.org