1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2006, 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 2, 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 COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
28 with Namet
; use Namet
;
30 with Osint
; use Osint
;
31 with Output
; use Output
;
32 with System
.WCh_Con
; use System
.WCh_Con
;
36 procedure Write_Switch_Char
(Sw
: String; Prefix
: String := "gnat");
37 -- Output two spaces followed by the switch character minus followed
38 -- Prefix, followed by the string given as the argument, and then
39 -- enough blanks to tab to column 13, i.e. assuming Sw is not longer
40 -- than 5 characters, the maximum allowed, Write_Switch_Char will
41 -- always output exactly 12 characters.
43 procedure Write_Switch_Char
(Sw
: String; Prefix
: String := "gnat") is
49 for J
in 1 .. 12 - 3 - Prefix
'Length - Sw
'Length loop
52 end Write_Switch_Char
;
54 -- Start of processing for Usage
59 -- For gnatmake, we are appending this information to the end of
60 -- the normal gnatmake output, so generate appropriate header
63 and then (Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "gnatmake"
65 Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "GNATMAKE")
68 Write_Line
("Compiler switches (passed to the compiler by gnatmake):");
73 Write_Str
("Usage: ");
76 Write_Str
("switches sfile");
82 Write_Line
(" sfile Source file name");
87 -- Common GCC switches not available in JGNAT
89 if not Hostparm
.Java_VM
then
90 Write_Switch_Char
("fstack-check ", "");
91 Write_Line
("Generate stack checking code");
93 Write_Switch_Char
("fno-inline ", "");
94 Write_Line
("Inhibit all inlining (makes executable smaller)");
97 -- Common switches available to both GCC and JGNAT
99 Write_Switch_Char
("g ", "");
100 Write_Line
("Generate debugging information");
102 Write_Switch_Char
("Idir ", "");
103 Write_Line
("Specify source files search path");
105 Write_Switch_Char
("I- ", "");
106 Write_Line
("Do not look for sources in current directory");
108 Write_Switch_Char
("O[0123] ", "");
109 Write_Line
("Control the optimization level");
113 -- Individual lines for switches. Write_Switch_Char outputs fourteen
114 -- characters, so the remaining message is allowed to be a maximum
115 -- of 65 characters to be comfortable on an 80 character device.
116 -- If the Write_Str fits on one line, it is short enough!
118 -- Line for -gnata switch
120 Write_Switch_Char
("a");
121 Write_Line
("Assertions enabled. Pragma Assert/Debug to be activated");
123 -- Line for -gnatA switch
125 Write_Switch_Char
("A");
126 Write_Line
("Avoid processing gnat.adc, if present file will be ignored");
128 -- Line for -gnatb switch
130 Write_Switch_Char
("b");
131 Write_Line
("Generate brief messages to stderr even if verbose mode set");
133 -- Line for -gnatc switch
135 Write_Switch_Char
("c");
136 Write_Line
("Check syntax and semantics only (no code generation)");
138 -- Line for -gnatd switch
140 Write_Switch_Char
("d?");
141 Write_Line
("Compiler debug option ? ([.]a-z,A-Z,0-9), see debug.adb");
143 -- Line for -gnatD switch
145 Write_Switch_Char
("D");
146 Write_Line
("Debug expanded generated code rather than source code");
148 -- Line for -gnatec switch
150 Write_Switch_Char
("ec=?");
151 Write_Line
("Specify configuration pragmas file, e.g. -gnatec=/x/f.adc");
153 -- Line for -gnateD switch
155 Write_Switch_Char
("eD?");
156 Write_Line
("Define or redefine preprocessing symbol, e.g. -gnateDsym=val");
158 -- Line for -gnatef switch
160 Write_Switch_Char
("ef");
161 Write_Line
("Full source path in brief error messages");
163 -- Line for -gnateI switch
165 Write_Switch_Char
("eInn");
166 Write_Line
("Index in multi-unit source, e.g. -gnateI2");
168 -- Line for -gnatem switch
170 Write_Switch_Char
("em=?");
171 Write_Line
("Specify mapping file, e.g. -gnatem=mapping");
173 -- Line for -gnatep switch
175 Write_Switch_Char
("ep=?");
176 Write_Line
("Specify preprocessing data file, e.g. -gnatep=prep.data");
178 -- Line for -gnatE switch
180 Write_Switch_Char
("E");
181 Write_Line
("Dynamic elaboration checking mode enabled");
183 -- Line for -gnatf switch
185 Write_Switch_Char
("f");
186 Write_Line
("Full errors. Verbose details, all undefined references");
188 -- Line for -gnatF switch
190 Write_Switch_Char
("F");
191 Write_Line
("Force all import/export external names to all uppercase");
193 -- Line for -gnatg switch
195 Write_Switch_Char
("g");
196 Write_Line
("GNAT implementation mode (used for compiling GNAT units)");
198 -- Line for -gnatG switch
200 Write_Switch_Char
("G");
201 Write_Line
("Output generated expanded code in source form");
203 -- Line for -gnath switch
205 Write_Switch_Char
("h");
206 Write_Line
("Output this usage (help) information");
208 -- Line for -gnati switch
210 Write_Switch_Char
("i?");
211 Write_Line
("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
213 -- Line for -gnatj switch
215 Write_Switch_Char
("jnn");
216 Write_Line
("Format error and warning messages to fit nn character lines");
218 -- Line for -gnatk switch
220 Write_Switch_Char
("k");
221 Write_Line
("Limit file names to nn characters (k = krunch)");
223 -- Lines for -gnatl switch
225 Write_Switch_Char
("l");
226 Write_Line
("Output full source listing with embedded error messages");
227 Write_Switch_Char
("l=f");
228 Write_Line
("Output full source listing to specified file");
230 -- Line for -gnatL switch
232 Write_Switch_Char
("L");
233 Write_Line
("List corresponding source text in -gnatG or -gnatD output");
235 -- Line for -gnatm switch
237 Write_Switch_Char
("mnn");
238 Write_Line
("Limit number of detected errors to nn (1-999999)");
240 -- Line for -gnatn switch
242 Write_Switch_Char
("n");
243 Write_Line
("Inlining of subprograms (apply pragma Inline across units)");
245 -- Line for -gnatN switch
247 Write_Switch_Char
("N");
248 Write_Line
("Full (frontend) inlining of subprograms");
250 -- Line for -gnato switch
252 Write_Switch_Char
("o");
253 Write_Line
("Enable overflow checking (off by default)");
255 -- Line for -gnatO switch
257 Write_Switch_Char
("O nm ");
258 Write_Line
("Set name of output ali file (internal switch)");
260 -- Line for -gnatp switch
262 Write_Switch_Char
("p");
263 Write_Line
("Suppress all checks");
265 -- Line for -gnatP switch
267 Write_Switch_Char
("P");
268 Write_Line
("Generate periodic calls to System.Polling.Poll");
270 -- Line for -gnatq switch
272 Write_Switch_Char
("q");
273 Write_Line
("Don't quit, try semantics, even if parse errors");
275 -- Line for -gnatQ switch
277 Write_Switch_Char
("Q");
278 Write_Line
("Don't quit, write ali/tree file even if compile errors");
280 -- Lines for -gnatR switch
282 Write_Switch_Char
("R?");
283 Write_Line
("List rep info (?=0/1/2/3 for none/types/all/variable)");
284 Write_Switch_Char
("R?s");
285 Write_Line
("List rep info to file.rep instead of standard output");
287 -- Lines for -gnats switch
289 Write_Switch_Char
("s");
290 Write_Line
("Syntax check only");
292 -- Lines for -gnatS switch
294 Write_Switch_Char
("S");
295 Write_Line
("Print listing of package Standard");
297 -- Lines for -gnatt switch
299 Write_Switch_Char
("t");
300 Write_Line
("Tree output file to be generated");
302 -- Line for -gnatT switch
304 Write_Switch_Char
("Tnn");
305 Write_Line
("All compiler tables start at nn times usual starting size");
307 -- Line for -gnatu switch
309 Write_Switch_Char
("u");
310 Write_Line
("List units for this compilation");
312 -- Line for -gnatU switch
314 Write_Switch_Char
("U");
315 Write_Line
("Enable unique tag for error messages");
317 -- Line for -gnatv switch
319 Write_Switch_Char
("v");
320 Write_Line
("Verbose mode. Full error output with source lines to stdout");
322 -- Line for -gnatV switch
324 Write_Switch_Char
("Vxx");
326 ("Enable selected validity checking mode, xx = list of parameters:");
327 Write_Line
(" a turn on all validity checking options");
328 Write_Line
(" c turn on checking for copies");
329 Write_Line
(" C turn off checking for copies");
330 Write_Line
(" d turn on default (RM) checking");
331 Write_Line
(" D turn off default (RM) checking");
332 Write_Line
(" e turn on checking for elementary components");
333 Write_Line
(" E turn off checking for elementary components");
334 Write_Line
(" f turn on checking for floating-point");
335 Write_Line
(" F turn off checking for floating-point");
336 Write_Line
(" i turn on checking for in params");
337 Write_Line
(" I turn off checking for in params");
338 Write_Line
(" m turn on checking for in out params");
339 Write_Line
(" M turn off checking for in out params");
340 Write_Line
(" o turn on checking for operators/attributes");
341 Write_Line
(" O turn off checking for operators/attributes");
342 Write_Line
(" p turn on checking for parameters");
343 Write_Line
(" P turn off checking for parameters");
344 Write_Line
(" r turn on checking for returns");
345 Write_Line
(" R turn off checking for returns");
346 Write_Line
(" s turn on checking for subscripts");
347 Write_Line
(" S turn off checking for subscripts");
348 Write_Line
(" t turn on checking for tests");
349 Write_Line
(" T turn off checking for tests");
350 Write_Line
(" n turn off all validity checks (including RM)");
352 -- Lines for -gnatw switch
354 Write_Switch_Char
("wxx");
355 Write_Line
("Enable selected warning modes, xx = list of parameters:");
356 Write_Line
(" a turn on all optional warnings (except d,h,l,t)");
357 Write_Line
(" A turn off all optional warnings");
358 Write_Line
(" b turn on warnings for bad fixed value " &
359 "(not multiple of small)");
360 Write_Line
(" B* turn off warnings for bad fixed value " &
361 "(not multiple of small)");
362 Write_Line
(" c turn on warnings for constant conditional");
363 Write_Line
(" C* turn off warnings for constant conditional");
364 Write_Line
(" d turn on warnings for implicit dereference");
365 Write_Line
(" D* turn off warnings for implicit dereference");
366 Write_Line
(" e treat all warnings as errors");
367 Write_Line
(" f turn on warnings for unreferenced formal");
368 Write_Line
(" F* turn off warnings for unreferenced formal");
369 Write_Line
(" g* turn on warnings for unrecognized pragma");
370 Write_Line
(" G turn off warnings for unrecognized pragma");
371 Write_Line
(" h turn on warnings for hiding variable ");
372 Write_Line
(" H* turn off warnings for hiding variable");
373 Write_Line
(" i* turn on warnings for implementation unit");
374 Write_Line
(" I turn off warnings for implementation unit");
375 Write_Line
(" j turn on warnings for obsolescent " &
376 "(annex J) feature");
377 Write_Line
(" J* turn off warnings for obsolescent " &
378 "(annex J) feature");
379 Write_Line
(" k turn on warnings on constant variable");
380 Write_Line
(" K* turn off warnings on constant variable");
381 Write_Line
(" l turn on warnings for missing " &
382 "elaboration pragma");
383 Write_Line
(" L* turn off warnings for missing " &
384 "elaboration pragma");
385 Write_Line
(" m turn on warnings for variable assigned " &
387 Write_Line
(" M* turn off warnings for variable assigned " &
389 Write_Line
(" n* normal warning mode (cancels -gnatws/-gnatwe)");
390 Write_Line
(" o* turn on warnings for address clause overlay");
391 Write_Line
(" O turn off warnings for address clause overlay");
392 Write_Line
(" p turn on warnings for ineffective pragma Inline");
393 Write_Line
(" P* turn off warnings for ineffective pragma Inline");
394 Write_Line
(" q turn on warnings for questionable " &
395 "missing paretheses");
396 Write_Line
(" Q* turn off warnings for questionable " &
397 "missing paretheses");
398 Write_Line
(" r turn on warnings for redundant construct");
399 Write_Line
(" R* turn off warnings for redundant construct");
400 Write_Line
(" s suppress all warnings");
401 Write_Line
(" t turn on warnings for tracking deleted code");
402 Write_Line
(" T* turn off warnings for tracking deleted code");
403 Write_Line
(" u turn on warnings for unused entity");
404 Write_Line
(" U* turn off warnings for unused entity");
405 Write_Line
(" v* turn on warnings for unassigned variable");
406 Write_Line
(" V turn off warnings for unassigned variable");
407 Write_Line
(" w* turn on warnings for wrong low bound assumption");
408 Write_Line
(" W turn off warnings for wrong low bound " &
410 Write_Line
(" x* turn on warnings for export/import");
411 Write_Line
(" X turn off warnings for export/import");
412 Write_Line
(" y* turn on warnings for Ada 2005 incompatibility");
413 Write_Line
(" Y turn off warnings for Ada 2005 incompatibility");
414 Write_Line
(" z* turn on size/align warnings for " &
415 "unchecked conversion");
416 Write_Line
(" Z turn off size/align warnings for " &
417 "unchecked conversion");
418 Write_Line
(" * indicates default in above list");
420 -- Line for -gnatW switch
422 Write_Switch_Char
("W");
423 Write_Str
("Wide character encoding method (");
425 for J
in WC_Encoding_Method
loop
426 Write_Char
(WC_Encoding_Letters
(J
));
428 if J
= WC_Encoding_Method
'Last then
437 -- Line for -gnatx switch
439 Write_Switch_Char
("x");
440 Write_Line
("Suppress output of cross-reference information");
442 -- Line for -gnatX switch
444 Write_Switch_Char
("X");
445 Write_Line
("Language extensions permitted");
447 -- Lines for -gnaty switch
449 Write_Switch_Char
("y");
450 Write_Line
("Enable default style checks (same as -gnaty3abcefhiklmnprst)");
451 Write_Switch_Char
("yxx");
452 Write_Line
("Enable selected style checks xx = list of parameters:");
453 Write_Line
(" 1-9 check indentation");
454 Write_Line
(" a check attribute casing");
455 Write_Line
(" b check no blanks at end of lines");
456 Write_Line
(" c check comment format");
457 Write_Line
(" d check no DOS line terminators");
458 Write_Line
(" e check end/exit labels present");
459 Write_Line
(" f check no form feeds/vertical tabs in source");
460 Write_Line
(" h check no horizontal tabs in source");
461 Write_Line
(" i check if-then layout");
462 Write_Line
(" I check mode in");
463 Write_Line
(" k check casing rules for keywords");
464 Write_Line
(" l check reference manual layout");
465 Write_Line
(" Lnn check max nest level < nn ");
466 Write_Line
(" m check line length <= 79 characters");
467 Write_Line
(" n check casing of package Standard identifiers");
468 Write_Line
(" Mnn check line length <= nn characters");
469 Write_Line
(" o check subprogram bodies in alphabetical order");
470 Write_Line
(" p check pragma casing");
471 Write_Line
(" r check casing for identifier references");
472 Write_Line
(" s check separate subprogram specs present");
473 Write_Line
(" t check token separation rules");
474 Write_Line
(" u check no unnecessary blank lines");
475 Write_Line
(" x check extra parens around conditionals");
477 -- Lines for -gnatyN switch
479 Write_Switch_Char
("yN");
480 Write_Line
("Cancel all previously set style checks");
482 -- Lines for -gnatz switch
484 Write_Switch_Char
("z");
485 Write_Line
("Distribution stub generation (r/c for receiver/caller stubs)");
487 -- Line for -gnat83 switch
489 Write_Switch_Char
("83");
490 Write_Line
("Enforce Ada 83 restrictions");
492 -- Line for -gnat95 switch
494 Write_Switch_Char
("95");
496 if Ada_Version_Default
= Ada_95
then
497 Write_Line
("Ada 95 mode (default)");
499 Write_Line
("Enforce Ada 95 restrictions");
502 -- Line for -gnat05 switch
504 Write_Switch_Char
("05");
506 if Ada_Version_Default
= Ada_05
then
507 Write_Line
("Ada 2005 mode (default)");
509 Write_Line
("Allow Ada 2005 extensions");