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* libgfortran.h (support_fpu_underflow_control,
[official-gcc.git] / gcc / ada / usage.adb
blob4516bb2e289fa7a708e044e5e5d6cddc21ff033b
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- U S A G E --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2014, 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 -- Warning: the output of this usage for warnings is duplicated in the GNAT
27 -- reference manual. Be sure to update that if you change the warning list.
28
29 with Targparm; use Targparm;
30 with Namet; use Namet;
31 with Opt; use Opt;
32 with Osint; use Osint;
33 with Output; use Output;
34
35 with System.WCh_Con; use System.WCh_Con;
36
37 procedure Usage is
38
39 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat");
40 -- Output two spaces followed by the switch character minus followed
41 -- Prefix, followed by the string given as the argument, and then enough
42 -- blanks to tab to column 13, i.e. assuming Sw is not longer than 5
43 -- characters, the maximum allowed, Write_Switch_Char will always output
44 -- exactly 12 characters.
45
46 -----------------------
47 -- Write_Switch_Char --
48 -----------------------
49
50 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat") is
51 begin
52 Write_Str (" -");
53 Write_Str (Prefix);
54 Write_Str (Sw);
55
56 for J in 1 .. 12 - 3 - Prefix'Length - Sw'Length loop
57 Write_Char (' ');
58 end loop;
59 end Write_Switch_Char;
60
61 -- Start of processing for Usage
62
63 begin
64 Find_Program_Name;
65
66 -- For gnatmake, we are appending this information to the end of
67 -- the normal gnatmake output, so generate appropriate header
68
69 if Name_Len >= 8
70 and then (Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake"
71 or else
72 Name_Buffer (Name_Len - 7 .. Name_Len) = "GNATMAKE")
73 then
74 Write_Eol;
75 Write_Line ("Compiler switches (passed to the compiler by gnatmake):");
76
77 else
78 -- Usage line
79
80 Write_Str ("Usage: ");
81 Write_Program_Name;
82 Write_Char (' ');
83 Write_Str ("switches sfile");
84 Write_Eol;
85 Write_Eol;
86
87 -- Line for sfile
88
89 Write_Line (" sfile Source file name");
90 end if;
91
92 Write_Eol;
93
94 -- Common GCC switches not available for JVM, .NET, and AAMP targets
95
96 if VM_Target = No_VM and then not AAMP_On_Target then
97 Write_Switch_Char ("fstack-check ", "");
98 Write_Line ("Generate stack checking code");
99
100 Write_Switch_Char ("fno-inline ", "");
101 Write_Line ("Inhibit all inlining (makes executable smaller)");
102
103 Write_Switch_Char ("fpreserve-control-flow ", "");
104 Write_Line ("Preserve control flow for coverage analysis");
105 end if;
106
107 -- Common switches available to both GCC and JGNAT
108
109 Write_Switch_Char ("g ", "");
110 Write_Line ("Generate debugging information");
111
112 Write_Switch_Char ("Idir ", "");
113 Write_Line ("Specify source files search path");
114
115 Write_Switch_Char ("I- ", "");
116 Write_Line ("Do not look for sources in current directory");
117
118 Write_Switch_Char ("O[0123] ", "");
119 Write_Line ("Control the optimization level");
120
121 Write_Eol;
122
123 -- Individual lines for switches. Write_Switch_Char outputs fourteen
124 -- characters, so the remaining message is allowed to be a maximum of
125 -- 65 characters to be comfortable in an 80 character window.
126
127 -- Line for -gnata switch
128
129 Write_Switch_Char ("a");
130 Write_Line ("Assertions enabled. Pragma Assert/Debug to be activated");
131
132 -- Line for -gnatA switch
133
134 Write_Switch_Char ("A");
135 Write_Line ("Avoid processing gnat.adc, if present file will be ignored");
136
137 -- Line for -gnatb switch
138
139 Write_Switch_Char ("b");
140 Write_Line ("Generate brief messages to stderr even if verbose mode set");
141
142 -- Line for -gnatB switch
143
144 Write_Switch_Char ("B");
145 Write_Line ("Assume no bad (invalid) values except in 'Valid attribute");
146
147 -- Line for -gnatc switch
148
149 Write_Switch_Char ("c");
150 Write_Line ("Check syntax and semantics only (no code generation)");
151
152 -- Line for -gnatC switch
153
154 Write_Switch_Char ("C");
155 Write_Line ("Generate CodePeer intermediate format (no code generation)");
156
157 -- Line for -gnatd switch
158
159 Write_Switch_Char ("d?");
160 Write_Line ("Compiler debug option ? ([.]a-z,A-Z,0-9), see debug.adb");
161
162 -- Line for -gnatD switch
163
164 Write_Switch_Char ("D");
165 Write_Line ("Debug expanded generated code (max line length = 72)");
166 Write_Switch_Char ("Dnn");
167 Write_Line ("Debug expanded generated code (max line length = nn)");
168
169 -- No line for -gnatea : internal switch
170
171 -- Line for -gnateA switch
172
173 Write_Switch_Char ("eA");
174 Write_Line ("Aliasing checks on subprogram parameters");
175
176 -- Line for -gnatec switch
177
178 Write_Switch_Char ("ec=?");
179 Write_Line ("Specify configuration pragmas file, e.g. -gnatec=/x/f.adc");
180
181 -- Line for -gnateC switch
182
183 Write_Switch_Char ("eC");
184 Write_Line ("Generate CodePeer messages (ignored without -gnatcC)");
185
186 -- Line for -gnated switch
187
188 Write_Switch_Char ("ed");
189 Write_Line ("Disable synchronization of atomic variables");
190
191 -- Line for -gnateD switch
192
193 Write_Switch_Char ("eD?");
194 Write_Line ("Define or redefine preprocessing symbol, e.g. -gnateDsym=val");
195
196 -- Line for -gnateE switch
197
198 Write_Switch_Char ("eE");
199 Write_Line ("Generate extra information in exception messages");
200
201 -- Line for -gnatef switch
202
203 Write_Switch_Char ("ef");
204 Write_Line ("Full source path in brief error messages");
205
206 -- Line for -gnateF switch
207
208 Write_Switch_Char ("eF");
209 Write_Line ("Check overflow on predefined Float types");
210
211 -- Line for -gnateG switch
212
213 Write_Switch_Char ("eG");
214 Write_Line ("Generate preprocessed source");
215
216 -- Line for -gnatei switch
217
218 Write_Switch_Char ("einn");
219 Write_Line ("Set maximum number of instantiations to nn");
220
221 -- Line for -gnateI switch
222
223 Write_Switch_Char ("eInn");
224 Write_Line ("Index in multi-unit source, e.g. -gnateI2");
225
226 -- Line for -gnatel switch
227
228 Write_Switch_Char ("el");
229 Write_Line ("Turn on info messages on generated Elaborate[_All] pragmas");
230
231 -- Line for -gnateL switch
232
233 Write_Switch_Char ("eL");
234 Write_Line ("Turn off info messages on generated Elaborate[_All] pragmas");
235
236 -- Line for -gnatem switch
237
238 Write_Switch_Char ("em=?");
239 Write_Line ("Specify mapping file, e.g. -gnatem=mapping");
240
241 -- No line for -gnateO=? : internal switch
242
243 -- Line for -gnatep switch
244
245 Write_Switch_Char ("ep=?");
246 Write_Line ("Specify preprocessing data file, e.g. -gnatep=prep.data");
247
248 -- Line for -gnateP switch
249
250 Write_Switch_Char ("eP");
251 Write_Line ("Pure/Prelaborate errors generate warnings rather than errors");
252
253 -- No line for -gnates=? : internal switch
254
255 -- Line for -gnateS switch
256
257 Write_Switch_Char ("eS");
258 Write_Line ("Generate SCO (Source Coverage Obligation) information");
259
260 -- Line for -gnatet switch
261
262 Write_Switch_Char ("et=?");
263 Write_Line ("Write target dependent information file ?, e.g. gnatet=tdf");
264
265 -- Line for -gnateT switch
266
267 Write_Switch_Char ("eT=?");
268 Write_Line ("Read target dependent information file ?, e.g. gnateT=tdf");
269
270 -- Line for -gnateu switch
271
272 Write_Switch_Char ("eu");
273 Write_Line ("Ignore unrecognized style/validity/warning switches");
274
275 -- Line for -gnateV switch
276
277 Write_Switch_Char ("eV");
278 Write_Line ("Validity checks on subprogram parameters");
279
280 -- Line for -gnateY switch
281
282 Write_Switch_Char ("eY");
283 Write_Line ("Ignore all Style_Checks pragmas in source");
284
285 -- No line for -gnatez : internal switch
286
287 -- Line for -gnatE switch
288
289 Write_Switch_Char ("E");
290 Write_Line ("Dynamic elaboration checking mode enabled");
291
292 -- Line for -gnatf switch
293
294 Write_Switch_Char ("f");
295 Write_Line ("Full errors. Verbose details, all undefined references");
296
297 -- Line for -gnatF switch
298
299 Write_Switch_Char ("F");
300 Write_Line ("Force all import/export external names to all uppercase");
301
302 -- Line for -gnatg switch
303
304 Write_Switch_Char ("g");
305 Write_Line ("GNAT implementation mode (used for compiling GNAT units)");
306
307 -- Lines for -gnatG switch
308
309 Write_Switch_Char ("G");
310 Write_Line ("Output generated expanded code (max line length = 72)");
311 Write_Switch_Char ("Gnn");
312 Write_Line ("Output generated expanded code (max line length = nn)");
313
314 -- Line for -gnath switch
315
316 Write_Switch_Char ("h");
317 Write_Line ("Output this usage (help) information");
318
319 -- Line for -gnati switch
320
321 Write_Switch_Char ("i?");
322 Write_Line ("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
323
324 -- Line for -gnatI switch
325
326 Write_Switch_Char ("I");
327 Write_Line ("Ignore all representation clauses");
328
329 -- Line for -gnatj switch
330
331 Write_Switch_Char ("jnn");
332 Write_Line ("Format error and warning messages to fit nn character lines");
333
334 -- Line for -gnatk switch
335
336 Write_Switch_Char ("k");
337 Write_Line ("Limit file names to nn characters (k = krunch)");
338
339 -- Lines for -gnatl switch
340
341 Write_Switch_Char ("l");
342 Write_Line ("Output full source listing with embedded error messages");
343 Write_Switch_Char ("l=f");
344 Write_Line ("Output full source listing to specified file");
345
346 -- Line for -gnatL switch
347
348 Write_Switch_Char ("L");
349 Write_Line ("List corresponding source text in -gnatG or -gnatD output");
350
351 -- Line for -gnatm switch
352
353 Write_Switch_Char ("mnn");
354 Write_Line ("Limit number of detected errors/warnings to nn (1-999999)");
355
356 -- Line for -gnatn switch
357
358 Write_Switch_Char ("n[?]");
359 Write_Line ("Enable pragma Inline (both within and across units, ?=1/2)");
360
361 -- Line for -gnato switch
362
363 Write_Switch_Char ("o");
364 Write_Line ("Enable overflow checking mode to CHECKED (off by default)");
365
366 -- Lines for -gnato? switches
367
368 Write_Switch_Char ("o?");
369 Write_Line
370 ("Enable overflow checks in STRICT/MINIMIZED/ELIMINATED (1/2/3) mode ");
371 Write_Switch_Char ("o??");
372 Write_Line
373 ("Set mode for general/assertion expressions separately");
374
375 -- No line for -gnatO : internal switch
376
377 -- Line for -gnatp switch
378
379 Write_Switch_Char ("p");
380 Write_Line ("Suppress all checks");
381
382 -- Line for -gnatP switch
383
384 Write_Switch_Char ("P");
385 Write_Line ("Generate periodic calls to System.Polling.Poll");
386
387 -- Line for -gnatq switch
388
389 Write_Switch_Char ("q");
390 Write_Line ("Don't quit, try semantics, even if parse errors");
391
392 -- Line for -gnatQ switch
393
394 Write_Switch_Char ("Q");
395 Write_Line ("Don't quit, write ali/tree file even if compile errors");
396
397 -- Line for -gnatr switch
398
399 Write_Switch_Char ("r");
400 Write_Line ("Treat pragma Restrictions as Restriction_Warnings");
401
402 -- Lines for -gnatR switch
403
404 Write_Switch_Char ("R?");
405 Write_Line
406 ("List rep info (?=0/1/2/3/m for none/types/all/variable/mechanisms)");
407 Write_Switch_Char ("R?s");
408 Write_Line ("List rep info to file.rep instead of standard output");
409
410 -- Line for -gnats switch
411
412 Write_Switch_Char ("s");
413 Write_Line ("Syntax check only");
414
415 -- Line for -gnatS switch
416
417 Write_Switch_Char ("S");
418 Write_Line ("Print listing of package Standard");
419
420 -- Line for -gnatt switch
421
422 Write_Switch_Char ("t");
423 Write_Line ("Tree output file to be generated");
424
425 -- Line for -gnatTnn switch
426
427 Write_Switch_Char ("Tnn");
428 Write_Line ("All compiler tables start at nn times usual starting size");
429
430 -- Line for -gnatu switch
431
432 Write_Switch_Char ("u");
433 Write_Line ("List units for this compilation");
434
435 -- Line for -gnatU switch
436
437 Write_Switch_Char ("U");
438 Write_Line ("Enable unique tag for error messages");
439
440 -- Line for -gnatv switch
441
442 Write_Switch_Char ("v");
443 Write_Line ("Verbose mode. Full error output with source lines to stdout");
444
445 -- Lines for -gnatV switch
446
447 Write_Switch_Char ("Vxx");
448 Write_Line
449 ("Enable selected validity checking mode, xx = list of parameters:");
450 Write_Line (" a turn on all validity checking options");
451 Write_Line (" c turn on checking for copies");
452 Write_Line (" C turn off checking for copies");
453 Write_Line (" d turn on default (RM) checking");
454 Write_Line (" D turn off default (RM) checking");
455 Write_Line (" e turn on checking for elementary components");
456 Write_Line (" E turn off checking for elementary components");
457 Write_Line (" f turn on checking for floating-point");
458 Write_Line (" F turn off checking for floating-point");
459 Write_Line (" i turn on checking for in params");
460 Write_Line (" I turn off checking for in params");
461 Write_Line (" m turn on checking for in out params");
462 Write_Line (" M turn off checking for in out params");
463 Write_Line (" o turn on checking for operators/attributes");
464 Write_Line (" O turn off checking for operators/attributes");
465 Write_Line (" p turn on checking for parameters");
466 Write_Line (" P turn off checking for parameters");
467 Write_Line (" r turn on checking for returns");
468 Write_Line (" R turn off checking for returns");
469 Write_Line (" s turn on checking for subscripts");
470 Write_Line (" S turn off checking for subscripts");
471 Write_Line (" t turn on checking for tests");
472 Write_Line (" T turn off checking for tests");
473 Write_Line (" n turn off all validity checks (including RM)");
474
475 -- Lines for -gnatw switch
476
477 Write_Switch_Char ("wxx");
478 Write_Line ("Enable selected warning modes, xx = list of parameters:");
479 Write_Line (" * indicates default setting");
480 Write_Line (" + indicates warning flag included in -gnatwa");
481 Write_Line (" a turn on all info/warnings marked below with +");
482 Write_Line (" A turn off all optional info/warnings");
483 Write_Line (" .a*+ turn on warnings for failing assertion");
484 Write_Line (" .A turn off warnings for failing assertion");
485 Write_Line (" b+ turn on warnings for bad fixed value " &
486 "(not multiple of small)");
487 Write_Line (" B* turn off warnings for bad fixed value " &
488 "(not multiple of small)");
489 Write_Line (" .b*+ turn on warnings for biased representation");
490 Write_Line (" .B turn off warnings for biased representation");
491 Write_Line (" c+ turn on warnings for constant conditional");
492 Write_Line (" C* turn off warnings for constant conditional");
493 Write_Line (" .c+ turn on warnings for unrepped components");
494 Write_Line (" .C* turn off warnings for unrepped components");
495 Write_Line (" d turn on warnings for implicit dereference");
496 Write_Line (" D* turn off warnings for implicit dereference");
497 Write_Line (" .d turn on tagging of warnings with -gnatw switch");
498 Write_Line (" .D* turn off tagging of warnings with -gnatw switch");
499 Write_Line (" e treat all warnings (but not info) as errors");
500 Write_Line (" .e turn on every optional info/warning " &
501 "(no exceptions)");
502 Write_Line (" f+ turn on warnings for unreferenced formal");
503 Write_Line (" F* turn off warnings for unreferenced formal");
504 Write_Line (" g*+ turn on warnings for unrecognized pragma");
505 Write_Line (" G turn off warnings for unrecognized pragma");
506 Write_Line (" .g turn on GNAT warnings, same as Aao.sI.C.V.X");
507 Write_Line (" h turn on warnings for hiding declarations");
508 Write_Line (" H* turn off warnings for hiding declarations");
509 Write_Line (" .h turn on warnings for holes in records");
510 Write_Line (" .H* turn off warnings for holes in records");
511 Write_Line (" i*+ turn on warnings for implementation unit");
512 Write_Line (" I turn off warnings for implementation unit");
513 Write_Line (" .i*+ turn on warnings for overlapping actuals");
514 Write_Line (" .I turn off warnings for overlapping actuals");
515 Write_Line (" j+ turn on warnings for obsolescent " &
516 "(annex J) feature");
517 Write_Line (" J* turn off warnings for obsolescent " &
518 "(annex J) feature");
519 Write_Line (" k+ turn on warnings on constant variable");
520 Write_Line (" K* turn off warnings on constant variable");
521 Write_Line (" .k turn on warnings for standard redefinition");
522 Write_Line (" .K* turn off warnings for standard redefinition");
523 Write_Line (" l turn on warnings for elaboration problems");
524 Write_Line (" L* turn off warnings for elaboration problems");
525 Write_Line (" .l turn on info messages for inherited aspects");
526 Write_Line (" .L* turn off info messages for inherited aspects");
527 Write_Line (" m+ turn on warnings for variable assigned " &
528 "but not read");
529 Write_Line (" M* turn off warnings for variable assigned " &
530 "but not read");
531 Write_Line (" .m* turn on warnings for suspicious modulus value");
532 Write_Line (" .M turn off warnings for suspicious modulus value");
533 Write_Line (" n* normal warning mode (cancels -gnatws/-gnatwe)");
534 Write_Line (" .n turn on info messages for atomic " &
535 "synchronization");
536 Write_Line (" .N* turn off info messages for atomic " &
537 "synchronization");
538 Write_Line (" o* turn on warnings for address clause overlay");
539 Write_Line (" O turn off warnings for address clause overlay");
540 Write_Line (" .o turn on warnings for out parameters assigned " &
541 "but not read");
542 Write_Line (" .O* turn off warnings for out parameters assigned " &
543 "but not read");
544 Write_Line (" p+ turn on warnings for ineffective pragma " &
545 "Inline in frontend");
546 Write_Line (" P* turn off warnings for ineffective pragma " &
547 "Inline in frontend");
548 Write_Line (" .p+ turn on warnings for suspicious parameter " &
549 "order");
550 Write_Line (" .P* turn off warnings for suspicious parameter " &
551 "order");
552 Write_Line (" q*+ turn on warnings for questionable " &
553 "missing parenthesis");
554 Write_Line (" Q turn off warnings for questionable " &
555 "missing parenthesis");
556 Write_Line (" r+ turn on warnings for redundant construct");
557 Write_Line (" R* turn off warnings for redundant construct");
558 Write_Line (" .r+ turn on warnings for object renaming function");
559 Write_Line (" .R* turn off warnings for object renaming function");
560 Write_Line (" s suppress all info/warnings");
561 Write_Line (" .s turn on warnings for overridden size clause");
562 Write_Line (" .S* turn off warnings for overridden size clause");
563 Write_Line (" t turn on warnings for tracking deleted code");
564 Write_Line (" T* turn off warnings for tracking deleted code");
565 Write_Line (" .t*+ turn on warnings for suspicious contract");
566 Write_Line (" .T turn off warnings for suspicious contract");
567 Write_Line (" u+ turn on warnings for unused entity");
568 Write_Line (" U* turn off warnings for unused entity");
569 Write_Line (" .u turn on warnings for unordered enumeration");
570 Write_Line (" .U* turn off warnings for unordered enumeration");
571 Write_Line (" v*+ turn on warnings for unassigned variable");
572 Write_Line (" V turn off warnings for unassigned variable");
573 Write_Line (" .v*+ turn on info messages for reverse bit order");
574 Write_Line (" .V turn off info messages for reverse bit order");
575 Write_Line (" w*+ turn on warnings for wrong low bound assumption");
576 Write_Line (" W turn off warnings for wrong low bound " &
577 "assumption");
578 Write_Line (" .w turn on warnings on pragma Warnings Off");
579 Write_Line (" .W* turn off warnings on pragma Warnings Off");
580 Write_Line (" x*+ turn on warnings for export/import");
581 Write_Line (" X turn off warnings for export/import");
582 Write_Line (" .x+ turn on warnings for non-local exception");
583 Write_Line (" .X* turn off warnings for non-local exception");
584 Write_Line (" y*+ turn on warnings for Ada compatibility issues");
585 Write_Line (" Y turn off warnings for Ada compatibility issues");
586 Write_Line (" .y turn on info messages for why pkg body needed");
587 Write_Line (" .Y* turn off info messages for why pkg body needed");
588 Write_Line (" z*+ turn on warnings for suspicious " &
589 "unchecked conversion");
590 Write_Line (" Z turn off warnings for suspicious " &
591 "unchecked conversion");
592
593 -- Line for -gnatW switch
594
595 Write_Switch_Char ("W?");
596 Write_Str ("Wide character encoding method (?=");
597
598 for J in WC_Encoding_Method loop
599 Write_Char (WC_Encoding_Letters (J));
600
601 if J = WC_Encoding_Method'Last then
602 Write_Char (')');
603 else
604 Write_Char ('/');
605 end if;
606 end loop;
607
608 Write_Eol;
609
610 -- Line for -gnatx switch
611
612 Write_Switch_Char ("x");
613 Write_Line ("Suppress output of cross-reference information");
614
615 -- Line for -gnatX switch
616
617 Write_Switch_Char ("X");
618 Write_Line ("Language extensions permitted");
619
620 -- Lines for -gnaty switch
621
622 Write_Switch_Char ("y");
623 Write_Line ("Enable default style checks (same as -gnaty3abcefhiklmnprst)");
624 Write_Switch_Char ("yxx");
625 Write_Line ("Enable selected style checks xx = list of parameters:");
626 Write_Line (" 1-9 check indentation");
627 Write_Line (" a check attribute casing");
628 Write_Line (" A check array attribute indexes");
629 Write_Line (" b check no blanks at end of lines");
630 Write_Line (" B check no use of AND/OR for boolean expressions");
631 Write_Line (" c check comment format (two spaces)");
632 Write_Line (" C check comment format (one space)");
633 Write_Line (" d check no DOS line terminators");
634 Write_Line (" e check end/exit labels present");
635 Write_Line (" f check no form feeds/vertical tabs in source");
636 Write_Line (" g check standard GNAT style rules, same as ydISux");
637 Write_Line (" h check no horizontal tabs in source");
638 Write_Line (" i check if-then layout");
639 Write_Line (" I check mode in");
640 Write_Line (" k check casing rules for keywords");
641 Write_Line (" l check reference manual layout");
642 Write_Line (" Lnn check max nest level < nn ");
643 Write_Line (" m check line length <= 79 characters");
644 Write_Line (" Mnn check line length <= nn characters");
645 Write_Line (" n check casing of package Standard identifiers");
646 Write_Line (" N turn off all checks");
647 Write_Line (" o check subprogram bodies in alphabetical order");
648 Write_Line (" O check overriding indicators");
649 Write_Line (" p check pragma casing");
650 Write_Line (" r check casing for identifier references");
651 Write_Line (" s check separate subprogram specs present");
652 Write_Line (" S check separate lines after THEN or ELSE");
653 Write_Line (" t check token separation rules");
654 Write_Line (" u check no unnecessary blank lines");
655 Write_Line (" x check extra parentheses around conditionals");
656 Write_Line (" y turn on default style checks");
657 Write_Line (" - subtract (turn off) subsequent checks");
658 Write_Line (" + add (turn on) subsequent checks");
659
660 -- Lines for -gnatyN switch
661
662 Write_Switch_Char ("yN");
663 Write_Line ("Cancel all previously set style checks");
664
665 -- Lines for -gnatzc switch
666
667 Write_Switch_Char ("zc");
668 Write_Line ("Distribution stub generation for caller stubs");
669
670 -- Lines for -gnatzr switch
671
672 Write_Switch_Char ("zr");
673 Write_Line ("Distribution stub generation for receiver stubs");
674
675 -- Line for -gnat83 switch
676
677 Write_Switch_Char ("83");
678 Write_Line ("Ada 83 mode");
679
680 -- Line for -gnat95 switch
681
682 Write_Switch_Char ("95");
683
684 if Ada_Version_Default = Ada_95 then
685 Write_Line ("Ada 95 mode (default)");
686 else
687 Write_Line ("Ada 95 mode");
688 end if;
689
690 -- Line for -gnat2005 switch
691
692 Write_Switch_Char ("2005");
693
694 if Ada_Version_Default = Ada_2005 then
695 Write_Line ("Ada 2005 mode (default)");
696 else
697 Write_Line ("Ada 2005 mode");
698 end if;
699
700 -- Line for -gnat2012 switch
701
702 Write_Switch_Char ("2012");
703
704 if Ada_Version_Default = Ada_2012 then
705 Write_Line ("Ada 2012 mode (default)");
706 else
707 Write_Line ("Ada 2012 mode");
708 end if;
709
710 -- Line for -gnat-p switch
711
712 Write_Switch_Char ("-p");
713 Write_Line ("Cancel effect of previous -gnatp switch");
714
715 end Usage;
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