1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2008, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 -- 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.
29 with Targparm
; use Targparm
;
30 with Namet
; use Namet
;
32 with Osint
; use Osint
;
33 with Output
; use Output
;
35 with System
.WCh_Con
; use System
.WCh_Con
;
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
42 -- enough blanks to tab to column 13, i.e. assuming Sw is not longer
43 -- than 5 characters, the maximum allowed, Write_Switch_Char will
44 -- always output exactly 12 characters.
46 -----------------------
47 -- Write_Switch_Char --
48 -----------------------
50 procedure Write_Switch_Char
(Sw
: String; Prefix
: String := "gnat") is
56 for J
in 1 .. 12 - 3 - Prefix
'Length - Sw
'Length loop
59 end Write_Switch_Char
;
61 -- Start of processing for Usage
66 -- For gnatmake, we are appending this information to the end of
67 -- the normal gnatmake output, so generate appropriate header
70 and then (Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "gnatmake"
72 Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "GNATMAKE")
75 Write_Line
("Compiler switches (passed to the compiler by gnatmake):");
80 Write_Str
("Usage: ");
83 Write_Str
("switches sfile");
89 Write_Line
(" sfile Source file name");
94 -- Common GCC switches not available in JGNAT/MGNAT
96 if VM_Target
= No_VM
then
97 Write_Switch_Char
("fstack-check ", "");
98 Write_Line
("Generate stack checking code");
100 Write_Switch_Char
("fno-inline ", "");
101 Write_Line
("Inhibit all inlining (makes executable smaller)");
104 -- Common switches available to both GCC and JGNAT
106 Write_Switch_Char
("g ", "");
107 Write_Line
("Generate debugging information");
109 Write_Switch_Char
("Idir ", "");
110 Write_Line
("Specify source files search path");
112 Write_Switch_Char
("I- ", "");
113 Write_Line
("Do not look for sources in current directory");
115 Write_Switch_Char
("O[0123] ", "");
116 Write_Line
("Control the optimization level");
120 -- Individual lines for switches. Write_Switch_Char outputs fourteen
121 -- characters, so the remaining message is allowed to be a maximum
122 -- of 65 characters to be comfortable on an 80 character device.
123 -- If the Write_Str fits on one line, it is short enough!
125 -- Line for -gnata switch
127 Write_Switch_Char
("a");
128 Write_Line
("Assertions enabled. Pragma Assert/Debug to be activated");
130 -- Line for -gnatA switch
132 Write_Switch_Char
("A");
133 Write_Line
("Avoid processing gnat.adc, if present file will be ignored");
135 -- Line for -gnatb switch
137 Write_Switch_Char
("b");
138 Write_Line
("Generate brief messages to stderr even if verbose mode set");
140 -- Line for -gnatc switch
142 Write_Switch_Char
("c");
143 Write_Line
("Check syntax and semantics only (no code generation)");
145 -- Line for -gnatd switch
147 Write_Switch_Char
("d?");
148 Write_Line
("Compiler debug option ? ([.]a-z,A-Z,0-9), see debug.adb");
150 -- Line for -gnatD switch
152 Write_Switch_Char
("D");
153 Write_Line
("Debug expanded generated code rather than source code");
155 -- Line for -gnatec switch
157 Write_Switch_Char
("ec=?");
158 Write_Line
("Specify configuration pragmas file, e.g. -gnatec=/x/f.adc");
160 -- Line for -gnateD switch
162 Write_Switch_Char
("eD?");
163 Write_Line
("Define or redefine preprocessing symbol, e.g. -gnateDsym=val");
165 -- Line for -gnatef switch
167 Write_Switch_Char
("ef");
168 Write_Line
("Full source path in brief error messages");
170 -- Line for -gnateI switch
172 Write_Switch_Char
("eInn");
173 Write_Line
("Index in multi-unit source, e.g. -gnateI2");
175 -- Line for -gnatem switch
177 Write_Switch_Char
("em=?");
178 Write_Line
("Specify mapping file, e.g. -gnatem=mapping");
180 -- Line for -gnatep switch
182 Write_Switch_Char
("ep=?");
183 Write_Line
("Specify preprocessing data file, e.g. -gnatep=prep.data");
185 -- Line for -gnatE switch
187 Write_Switch_Char
("E");
188 Write_Line
("Dynamic elaboration checking mode enabled");
190 -- Line for -gnatf switch
192 Write_Switch_Char
("f");
193 Write_Line
("Full errors. Verbose details, all undefined references");
195 -- Line for -gnatF switch
197 Write_Switch_Char
("F");
198 Write_Line
("Force all import/export external names to all uppercase");
200 -- Line for -gnatg switch
202 Write_Switch_Char
("g");
203 Write_Line
("GNAT implementation mode (used for compiling GNAT units)");
205 -- Line for -gnatG switch
207 Write_Switch_Char
("G");
208 Write_Line
("Output generated expanded code in source form");
210 -- Line for -gnath switch
212 Write_Switch_Char
("h");
213 Write_Line
("Output this usage (help) information");
215 -- Line for -gnati switch
217 Write_Switch_Char
("i?");
218 Write_Line
("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
220 -- Line for -gnatI switch
222 Write_Switch_Char
("I");
223 Write_Line
("Ignore all representation clauses");
225 -- Line for -gnatj switch
227 Write_Switch_Char
("jnn");
228 Write_Line
("Format error and warning messages to fit nn character lines");
230 -- Line for -gnatk switch
232 Write_Switch_Char
("k");
233 Write_Line
("Limit file names to nn characters (k = krunch)");
235 -- Lines for -gnatl switch
237 Write_Switch_Char
("l");
238 Write_Line
("Output full source listing with embedded error messages");
239 Write_Switch_Char
("l=f");
240 Write_Line
("Output full source listing to specified file");
242 -- Line for -gnatL switch
244 Write_Switch_Char
("L");
245 Write_Line
("List corresponding source text in -gnatG or -gnatD output");
247 -- Line for -gnatm switch
249 Write_Switch_Char
("mnn");
250 Write_Line
("Limit number of detected errors to nn (1-999999)");
252 -- Line for -gnatn switch
254 Write_Switch_Char
("n");
255 Write_Line
("Inlining of subprograms (apply pragma Inline across units)");
257 -- Line for -gnatN switch
259 Write_Switch_Char
("N");
260 Write_Line
("Full (frontend) inlining of subprograms");
262 -- Line for -gnato switch
264 Write_Switch_Char
("o");
265 Write_Line
("Enable overflow checking (off by default)");
267 -- Line for -gnatO switch
269 Write_Switch_Char
("O nm ");
270 Write_Line
("Set name of output ali file (internal switch)");
272 -- Line for -gnatp switch
274 Write_Switch_Char
("p");
275 Write_Line
("Suppress all checks");
277 -- Line for -gnatP switch
279 Write_Switch_Char
("P");
280 Write_Line
("Generate periodic calls to System.Polling.Poll");
282 -- Line for -gnatq switch
284 Write_Switch_Char
("q");
285 Write_Line
("Don't quit, try semantics, even if parse errors");
287 -- Line for -gnatQ switch
289 Write_Switch_Char
("Q");
290 Write_Line
("Don't quit, write ali/tree file even if compile errors");
292 -- Line for -gnatr switch
294 Write_Switch_Char
("r");
295 Write_Line
("Treat pragma Restrictions as Restriction_Warnings");
297 -- Lines for -gnatR switch
299 Write_Switch_Char
("R?");
300 Write_Line
("List rep info (?=0/1/2/3 for none/types/all/variable)");
301 Write_Switch_Char
("R?s");
302 Write_Line
("List rep info to file.rep instead of standard output");
304 -- Lines for -gnats switch
306 Write_Switch_Char
("s");
307 Write_Line
("Syntax check only");
309 -- Lines for -gnatS switch
311 Write_Switch_Char
("S");
312 Write_Line
("Print listing of package Standard");
314 -- Lines for -gnatt switch
316 Write_Switch_Char
("t");
317 Write_Line
("Tree output file to be generated");
319 -- Line for -gnatT switch
321 Write_Switch_Char
("Tnn");
322 Write_Line
("All compiler tables start at nn times usual starting size");
324 -- Line for -gnatu switch
326 Write_Switch_Char
("u");
327 Write_Line
("List units for this compilation");
329 -- Line for -gnatU switch
331 Write_Switch_Char
("U");
332 Write_Line
("Enable unique tag for error messages");
334 -- Line for -gnatv switch
336 Write_Switch_Char
("v");
337 Write_Line
("Verbose mode. Full error output with source lines to stdout");
339 -- Line for -gnatV switch
341 Write_Switch_Char
("Vxx");
343 ("Enable selected validity checking mode, xx = list of parameters:");
344 Write_Line
(" a turn on all validity checking options");
345 Write_Line
(" c turn on checking for copies");
346 Write_Line
(" C turn off checking for copies");
347 Write_Line
(" d turn on default (RM) checking");
348 Write_Line
(" D turn off default (RM) checking");
349 Write_Line
(" e turn on checking for elementary components");
350 Write_Line
(" E turn off checking for elementary components");
351 Write_Line
(" f turn on checking for floating-point");
352 Write_Line
(" F turn off checking for floating-point");
353 Write_Line
(" i turn on checking for in params");
354 Write_Line
(" I turn off checking for in params");
355 Write_Line
(" m turn on checking for in out params");
356 Write_Line
(" M turn off checking for in out params");
357 Write_Line
(" o turn on checking for operators/attributes");
358 Write_Line
(" O turn off checking for operators/attributes");
359 Write_Line
(" p turn on checking for parameters");
360 Write_Line
(" P turn off checking for parameters");
361 Write_Line
(" r turn on checking for returns");
362 Write_Line
(" R turn off checking for returns");
363 Write_Line
(" s turn on checking for subscripts");
364 Write_Line
(" S turn off checking for subscripts");
365 Write_Line
(" t turn on checking for tests");
366 Write_Line
(" T turn off checking for tests");
367 Write_Line
(" n turn off all validity checks (including RM)");
369 -- Lines for -gnatw switch
371 Write_Switch_Char
("wxx");
372 Write_Line
("Enable selected warning modes, xx = list of parameters:");
373 Write_Line
(" a turn on all optional warnings " &
374 "(except dhl.ot.w)");
375 Write_Line
(" A turn off all optional warnings");
376 Write_Line
(" .a* turn on warnings for failing assertions");
377 Write_Line
(" .A turn off warnings for failing assertions");
378 Write_Line
(" b turn on warnings for bad fixed value " &
379 "(not multiple of small)");
380 Write_Line
(" B* turn off warnings for bad fixed value " &
381 "(not multiple of small)");
382 Write_Line
(" c turn on warnings for constant conditional");
383 Write_Line
(" C* turn off warnings for constant conditional");
384 Write_Line
(" .c turn on warnings for unrepped components");
385 Write_Line
(" .C* turn off warnings for unrepped components");
386 Write_Line
(" d turn on warnings for implicit dereference");
387 Write_Line
(" D* turn off warnings for implicit dereference");
388 Write_Line
(" e treat all warnings as errors");
389 Write_Line
(" .e turn on every optional warning (no exceptions)");
390 Write_Line
(" f turn on warnings for unreferenced formal");
391 Write_Line
(" F* turn off warnings for unreferenced formal");
392 Write_Line
(" g* turn on warnings for unrecognized pragma");
393 Write_Line
(" G turn off warnings for unrecognized pragma");
394 Write_Line
(" h turn on warnings for hiding variable ");
395 Write_Line
(" H* turn off warnings for hiding variable");
396 Write_Line
(" i* turn on warnings for implementation unit");
397 Write_Line
(" I turn off warnings for implementation unit");
398 Write_Line
(" j turn on warnings for obsolescent " &
399 "(annex J) feature");
400 Write_Line
(" J* turn off warnings for obsolescent " &
401 "(annex J) feature");
402 Write_Line
(" k turn on warnings on constant variable");
403 Write_Line
(" K* turn off warnings on constant variable");
404 Write_Line
(" l turn on warnings for missing " &
405 "elaboration pragma");
406 Write_Line
(" L* turn off warnings for missing " &
407 "elaboration pragma");
408 Write_Line
(" m turn on warnings for variable assigned " &
410 Write_Line
(" M* turn off warnings for variable assigned " &
412 Write_Line
(" n* normal warning mode (cancels -gnatws/-gnatwe)");
413 Write_Line
(" o* turn on warnings for address clause overlay");
414 Write_Line
(" O turn off warnings for address clause overlay");
415 Write_Line
(" .o turn on warnings for out parameters assigned " &
417 Write_Line
(" .O* turn off warnings for out parameters assigned " &
419 Write_Line
(" p turn on warnings for ineffective pragma " &
420 "Inline in frontend");
421 Write_Line
(" P* turn off warnings for ineffective pragma " &
422 "Inline in frontend");
423 Write_Line
(" .p turn on warnings for suspicious parameter " &
425 Write_Line
(" .P* turn off warnings for suspicious parameter " &
427 Write_Line
(" q* turn on warnings for questionable " &
428 "missing parentheses");
429 Write_Line
(" Q turn off warnings for questionable " &
430 "missing parentheses");
431 Write_Line
(" r turn on warnings for redundant construct");
432 Write_Line
(" R* turn off warnings for redundant construct");
433 Write_Line
(" .r turn on warnings for object renaming function");
434 Write_Line
(" .R* turn off warnings for object renaming function");
435 Write_Line
(" s suppress all warnings");
436 Write_Line
(" t turn on warnings for tracking deleted code");
437 Write_Line
(" T* turn off warnings for tracking deleted code");
438 Write_Line
(" u turn on warnings for unused entity");
439 Write_Line
(" U* turn off warnings for unused entity");
440 Write_Line
(" v* turn on warnings for unassigned variable");
441 Write_Line
(" V turn off warnings for unassigned variable");
442 Write_Line
(" w* turn on warnings for wrong low bound assumption");
443 Write_Line
(" W turn off warnings for wrong low bound " &
445 Write_Line
(" .w turn on warnings on pragma Warnings Off");
446 Write_Line
(" .w* turn off warnings on pragma Warnings Off");
447 Write_Line
(" x* turn on warnings for export/import");
448 Write_Line
(" X turn off warnings for export/import");
449 Write_Line
(" .x turn on warnings for non-local exceptions");
450 Write_Line
(" .X* turn off warnings for non-local exceptions");
451 Write_Line
(" y* turn on warnings for Ada 2005 incompatibility");
452 Write_Line
(" Y turn off warnings for Ada 2005 incompatibility");
453 Write_Line
(" z* turn on convention/size/align warnings for " &
454 "unchecked conversion");
455 Write_Line
(" Z turn off convention/size/align warnings for " &
456 "unchecked conversion");
457 Write_Line
(" * indicates default in above list");
459 -- Line for -gnatW switch
461 Write_Switch_Char
("W");
462 Write_Str
("Wide character encoding method (");
464 for J
in WC_Encoding_Method
loop
465 Write_Char
(WC_Encoding_Letters
(J
));
467 if J
= WC_Encoding_Method
'Last then
476 -- Line for -gnatx switch
478 Write_Switch_Char
("x");
479 Write_Line
("Suppress output of cross-reference information");
481 -- Line for -gnatX switch
483 Write_Switch_Char
("X");
484 Write_Line
("Language extensions permitted");
486 -- Lines for -gnaty switch
488 Write_Switch_Char
("y");
489 Write_Line
("Enable default style checks (same as -gnaty3abcefhiklmnprst)");
490 Write_Switch_Char
("yxx");
491 Write_Line
("Enable selected style checks xx = list of parameters:");
492 Write_Line
(" 1-9 check indentation");
493 Write_Line
(" a check attribute casing");
494 Write_Line
(" A check array attribute indexes");
495 Write_Line
(" b check no blanks at end of lines");
496 Write_Line
(" c check comment format");
497 Write_Line
(" d check no DOS line terminators");
498 Write_Line
(" e check end/exit labels present");
499 Write_Line
(" f check no form feeds/vertical tabs in source");
500 Write_Line
(" g check standard GNAT style rules");
501 Write_Line
(" h check no horizontal tabs in source");
502 Write_Line
(" i check if-then layout");
503 Write_Line
(" I check mode in");
504 Write_Line
(" k check casing rules for keywords");
505 Write_Line
(" l check reference manual layout");
506 Write_Line
(" Lnn check max nest level < nn ");
507 Write_Line
(" m check line length <= 79 characters");
508 Write_Line
(" n check casing of package Standard identifiers");
509 Write_Line
(" Mnn check line length <= nn characters");
510 Write_Line
(" N turn off all checks");
511 Write_Line
(" o check subprogram bodies in alphabetical order");
512 Write_Line
(" p check pragma casing");
513 Write_Line
(" r check casing for identifier references");
514 Write_Line
(" s check separate subprogram specs present");
515 Write_Line
(" S check separate lines after THEN or ELSE");
516 Write_Line
(" t check token separation rules");
517 Write_Line
(" u check no unnecessary blank lines");
518 Write_Line
(" x check extra parentheses around conditionals");
519 Write_Line
(" y turn on default style checks");
520 Write_Line
(" - subtract (turn off) subsequent checks");
521 Write_Line
(" + add (turn on) subsequent checks");
523 -- Lines for -gnatyN switch
525 Write_Switch_Char
("yN");
526 Write_Line
("Cancel all previously set style checks");
528 -- Lines for -gnatz switch
530 Write_Switch_Char
("z");
531 Write_Line
("Distribution stub generation (r/c for receiver/caller stubs)");
533 -- Line for -gnat83 switch
535 Write_Switch_Char
("83");
536 Write_Line
("Enforce Ada 83 restrictions");
538 -- Line for -gnat95 switch
540 Write_Switch_Char
("95");
542 if Ada_Version_Default
= Ada_95
then
543 Write_Line
("Ada 95 mode (default)");
545 Write_Line
("Enforce Ada 95 restrictions");
548 -- Line for -gnat05 switch
550 Write_Switch_Char
("05");
552 if Ada_Version_Default
= Ada_05
then
553 Write_Line
("Ada 2005 mode (default)");
555 Write_Line
("Allow Ada 2005 extensions");