1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1992-2002, Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- GNAT was originally developed by the GNAT team at New York University. --
25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
27 ------------------------------------------------------------------------------
30 with Namet; use Namet;
31 with Osint; use Osint;
32 with Output; use Output;
33 with System.WCh_Con; use System.WCh_Con;
37 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat");
38 -- Output two spaces followed by the switch character minus followed
39 -- Prefix, followed by the string given as the argument, and then
40 -- enough blanks to tab to column 13, i.e. assuming Sw is not longer
41 -- than 5 characters, the maximum allowed, Write_Switch_Char will
42 -- always output exactly 12 characters.
44 procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat") is
50 for J in 1 .. 12 - 3 - Prefix'Length - Sw'Length loop
53 end Write_Switch_Char;
55 -- Start of processing for Usage
60 -- For gnatmake, we are appending this information to the end of
61 -- the normal gnatmake output, so generate appropriate header
64 and then (Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake"
66 Name_Buffer (Name_Len - 7 .. Name_Len) = "GNATMAKE")
69 Write_Line ("Compiler switches (passed to the compiler by gnatmake):");
74 Write_Str ("Usage: ");
77 Write_Str ("switches sfile");
83 Write_Line (" sfile Source file name");
88 -- Common GCC switches not available in JGNAT
90 if not Hostparm.Java_VM then
91 Write_Switch_Char ("fstack-check ", "");
92 Write_Line ("Generate stack checking code");
94 Write_Switch_Char ("fno-inline ", "");
95 Write_Line ("Inhibit all inlining (makes executable smaller)");
98 -- Common switches available to both GCC and JGNAT
100 Write_Switch_Char ("g ", "");
101 Write_Line ("Generate debugging information");
103 Write_Switch_Char ("Idir ", "");
104 Write_Line ("Specify source files search path");
106 Write_Switch_Char ("I- ", "");
107 Write_Line ("Do not look for sources in current directory");
109 Write_Switch_Char ("O[0123] ", "");
110 Write_Line ("Control the optimization level");
114 -- Individual lines for switches. Write_Switch_Char outputs fourteen
115 -- characters, so the remaining message is allowed to be a maximum
116 -- of 65 characters to be comfortable on an 80 character device.
117 -- If the Write_Str fits on one line, it is short enough!
119 -- Line for -gnata switch
121 Write_Switch_Char ("a");
122 Write_Line ("Assertions enabled. Pragma Assert/Debug to be activated");
124 -- Line for -gnatA switch
126 Write_Switch_Char ("A");
127 Write_Line ("Avoid processing gnat.adc, if present file will be ignored");
129 -- Line for -gnatb switch
131 Write_Switch_Char ("b");
132 Write_Line ("Generate brief messages to stderr even if verbose mode set");
134 -- Line for -gnatc switch
136 Write_Switch_Char ("c");
137 Write_Line ("Check syntax and semantics only (no code generation)");
139 Write_Switch_Char ("C");
140 Write_Line ("Compress names in external names and debug info tables");
142 -- Line for -gnatd switch
144 Write_Switch_Char ("d?");
145 Write_Line ("Compiler debug option ? (a-z,A-Z,0-9), see debug.adb");
147 -- Line for -gnatD switch
149 Write_Switch_Char ("D");
150 Write_Line ("Debug expanded generated code rather than source code");
152 -- Line for -gnatec switch
154 Write_Switch_Char ("ec?");
155 Write_Line ("Specify configuration pragmas file, e.g. -gnatec/x/f.adc");
157 -- Line for -gnatem switch
159 Write_Switch_Char ("em?");
160 Write_Line ("Specify mapping file, e.g. -gnatemmapping");
162 -- Line for -gnatE switch
164 Write_Switch_Char ("E");
165 Write_Line ("Dynamic elaboration checking mode enabled");
167 -- Line for -gnatf switch
169 Write_Switch_Char ("f");
170 Write_Line ("Full errors. Verbose details, all undefined references");
172 -- Line for -gnatF switch
174 Write_Switch_Char ("F");
175 Write_Line ("Force all import/export external names to all uppercase");
177 -- Line for -gnatg switch
179 Write_Switch_Char ("g");
180 Write_Line ("GNAT implementation mode (used for compiling GNAT units)");
182 -- Line for -gnatG switch
184 Write_Switch_Char ("G");
185 Write_Line ("Output generated expanded code in source form");
187 -- Line for -gnath switch
189 Write_Switch_Char ("h");
190 Write_Line ("Output this usage (help) information");
192 -- Line for -gnati switch
194 Write_Switch_Char ("i?");
195 Write_Line ("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
197 -- Line for -gnatk switch
199 Write_Switch_Char ("k");
200 Write_Line ("Limit file names to nnn characters (k = krunch)");
202 -- Line for -gnatl switch
204 Write_Switch_Char ("l");
205 Write_Line ("Output full source listing with embedded error messages");
207 -- Line for -gnatL switch
209 Write_Switch_Char ("L");
210 Write_Line ("Use longjmp/setjmp for exception handling");
212 -- Line for -gnatm switch
214 Write_Switch_Char ("mnnn");
215 Write_Line ("Limit number of detected errors to nnn (1-999)");
217 -- Line for -gnatn switch
219 Write_Switch_Char ("n");
220 Write_Line ("Inlining of subprograms (apply pragma Inline across units)");
222 -- Line for -gnatN switch
224 Write_Switch_Char ("N");
225 Write_Line ("Full (frontend) inlining of subprograqms");
227 -- Line for -gnato switch
229 Write_Switch_Char ("o");
230 Write_Line ("Enable overflow checking (off by default)");
232 -- Line for -gnatO switch
234 Write_Switch_Char ("O nm ");
235 Write_Line ("Set name of output ali file (internal switch)");
237 -- Line for -gnatp switch
239 Write_Switch_Char ("p");
240 Write_Line ("Suppress all checks");
242 -- Line for -gnatP switch
244 Write_Switch_Char ("P");
245 Write_Line ("Generate periodic calls to System.Polling.Poll");
247 -- Line for -gnatq switch
249 Write_Switch_Char ("q");
250 Write_Line ("Don't quit, try semantics, even if parse errors");
252 -- Line for -gnatQ switch
254 Write_Switch_Char ("Q");
255 Write_Line ("Don't quit, write ali/tree file even if compile errors");
257 -- Line for -gnatR switch
259 Write_Switch_Char ("R?");
260 Write_Line ("List rep inf (?=0/1/2/3 for none/types/all/variable)");
262 -- Lines for -gnats switch
264 Write_Switch_Char ("s");
265 Write_Line ("Syntax check only");
267 -- Lines for -gnatt switch
269 Write_Switch_Char ("t");
270 Write_Line ("Tree output file to be generated");
272 -- Line for -gnatT switch
274 Write_Switch_Char ("Tnnn");
275 Write_Line ("All compiler tables start at nnn times usual starting size");
277 -- Line for -gnatu switch
279 Write_Switch_Char ("u");
280 Write_Line ("List units for this compilation");
282 -- Line for -gnatU switch
284 Write_Switch_Char ("U");
285 Write_Line ("Enable unique tag for error messages");
287 -- Line for -gnatv switch
289 Write_Switch_Char ("v");
290 Write_Line ("Verbose mode. Full error output with source lines to stdout");
292 -- Line for -gnatV switch
294 Write_Switch_Char ("Vxx");
296 ("Enable selected validity checking mode, xx = list of parameters:");
297 Write_Line (" a turn on all validity checking options");
298 Write_Line (" c turn on checking for copies");
299 Write_Line (" C turn off checking for copies");
300 Write_Line (" d turn on default (RM) checking");
301 Write_Line (" D turn off default (RM) checking");
302 Write_Line (" f turn on checking for floating-point");
303 Write_Line (" F turn off checking for floating-point");
304 Write_Line (" i turn on checking for in params");
305 Write_Line (" I turn off checking for in params");
306 Write_Line (" m turn on checking for in out params");
307 Write_Line (" M turn off checking for in out params");
308 Write_Line (" o turn on checking for operators/attributes");
309 Write_Line (" O turn off checking for operators/attributes");
310 Write_Line (" r turn on checking for returns");
311 Write_Line (" R turn off checking for returns");
312 Write_Line (" s turn on checking for subscripts");
313 Write_Line (" S turn off checking for subscripts");
314 Write_Line (" t turn on checking for tests");
315 Write_Line (" T turn off checking for tests");
316 Write_Line (" n turn off all validity checks (including RM)");
318 -- Lines for -gnatw switch
320 Write_Switch_Char ("wxx");
321 Write_Line ("Enable selected warning modes, xx = list of parameters:");
322 Write_Line (" a turn on all optional warnings (except b,d,h)");
323 Write_Line (" A turn off all optional warnings");
324 Write_Line (" b turn on biased rounding warnings");
325 Write_Line (" B turn off biased rounding warnings");
326 Write_Line (" c turn on constant conditional warnings");
327 Write_Line (" C* turn off constant conditional warnings");
328 Write_Line (" d turn on implicit dereference warnings");
329 Write_Line (" D* turn off implicit dereference warnings");
330 Write_Line (" e treat all warnings as errors");
331 Write_Line (" f turn on unreferenced formal warnings");
332 Write_Line (" F* turn off unreferenced formal warnings");
333 Write_Line (" h turn on warnings for hiding variables");
334 Write_Line (" H* turn off warnings for hiding variables");
335 Write_Line (" i* turn on warnings for implementation units");
336 Write_Line (" I turn off warnings for implementation units");
337 Write_Line (" l turn on elaboration warnings");
338 Write_Line (" L* turn off elaboration warnings");
339 Write_Line (" o* turn on address clause overlay warnings");
340 Write_Line (" O turn off address clause overlay warnings");
341 Write_Line (" p turn on warnings for ineffective pragma inline");
342 Write_Line (" P* turn off warnings for ineffective pragma inline");
343 Write_Line (" r turn on redundant construct warnings");
344 Write_Line (" R* turn off redundant construct warnings");
345 Write_Line (" s suppress all warnings");
346 Write_Line (" u turn on warnings for unused entities");
347 Write_Line (" U* turn off warnings for unused entities");
348 Write_Line (" * indicates default in above list");
350 -- Line for -gnatW switch
352 Write_Switch_Char ("W");
353 Write_Str ("Wide character encoding method (");
355 for J in WC_Encoding_Method loop
356 Write_Char (WC_Encoding_Letters (J));
358 if J = WC_Encoding_Method'Last then
367 -- Line for -gnatx switch
369 Write_Switch_Char ("x");
370 Write_Line ("Suppress output of cross-reference information");
372 -- Line for -gnatX switch
374 Write_Switch_Char ("X");
375 Write_Line ("Language extensions permitted");
377 -- Lines for -gnaty switch
379 Write_Switch_Char ("y");
380 Write_Line ("Enable all style checks except 'o', indent=3");
382 Write_Switch_Char ("yxx");
383 Write_Line ("Enable selected style checks xx = list of parameters:");
384 Write_Line (" 1-9 check indentation");
385 Write_Line (" a check attribute casing");
386 Write_Line (" b check no blanks at end of lines");
387 Write_Line (" c check comment format");
388 Write_Line (" e check end/exit labels present");
389 Write_Line (" f check no form feeds/vertical tabs in source");
390 Write_Line (" h check no horizontal tabs in source");
391 Write_Line (" i check if-then layout");
392 Write_Line (" k check casing rules for keywords, identifiers");
393 Write_Line (" l check reference manual layout");
394 Write_Line (" m check line length <= 79 characters");
395 Write_Line (" n check casing of package Standard identifiers");
396 Write_Line (" Mnnn check line length <= nnn characters");
397 Write_Line (" o check subprogram bodies in alphabetical order");
398 Write_Line (" p check pragma casing");
399 Write_Line (" r check RM column layout");
400 Write_Line (" s check separate subprogram specs present");
401 Write_Line (" t check token separation rules");
403 -- Lines for -gnatz switch
405 Write_Switch_Char ("z");
406 Write_Line ("Distribution stub generation (r/s for receiver/sender stubs)");
408 -- Line for -gnatZ switch
410 Write_Switch_Char ("Z");
411 Write_Line ("Use zero cost exception handling");
413 -- Line for -gnat83 switch
415 Write_Switch_Char ("83");
416 Write_Line ("Enforce Ada 83 restrictions");