1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2002, 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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, 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
;
29 with Osint
; use Osint
;
30 with Output
; use Output
;
31 with System
.WCh_Con
; use System
.WCh_Con
;
35 procedure Write_Switch_Char
(Sw
: String; Prefix
: String := "gnat");
36 -- Output two spaces followed by the switch character minus followed
37 -- Prefix, followed by the string given as the argument, and then
38 -- enough blanks to tab to column 13, i.e. assuming Sw is not longer
39 -- than 5 characters, the maximum allowed, Write_Switch_Char will
40 -- always output exactly 12 characters.
42 procedure Write_Switch_Char
(Sw
: String; Prefix
: String := "gnat") is
48 for J
in 1 .. 12 - 3 - Prefix
'Length - Sw
'Length loop
51 end Write_Switch_Char
;
53 -- Start of processing for Usage
58 -- For gnatmake, we are appending this information to the end of
59 -- the normal gnatmake output, so generate appropriate header
62 and then (Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "gnatmake"
64 Name_Buffer
(Name_Len
- 7 .. Name_Len
) = "GNATMAKE")
67 Write_Line
("Compiler switches (passed to the compiler by gnatmake):");
72 Write_Str
("Usage: ");
75 Write_Str
("switches sfile");
81 Write_Line
(" sfile Source file name");
86 -- Common GCC switches not available in JGNAT
88 if not Hostparm
.Java_VM
then
89 Write_Switch_Char
("fstack-check ", "");
90 Write_Line
("Generate stack checking code");
92 Write_Switch_Char
("fno-inline ", "");
93 Write_Line
("Inhibit all inlining (makes executable smaller)");
96 -- Common switches available to both GCC and JGNAT
98 Write_Switch_Char
("g ", "");
99 Write_Line
("Generate debugging information");
101 Write_Switch_Char
("Idir ", "");
102 Write_Line
("Specify source files search path");
104 Write_Switch_Char
("I- ", "");
105 Write_Line
("Do not look for sources in current directory");
107 Write_Switch_Char
("O[0123] ", "");
108 Write_Line
("Control the optimization level");
112 -- Individual lines for switches. Write_Switch_Char outputs fourteen
113 -- characters, so the remaining message is allowed to be a maximum
114 -- of 65 characters to be comfortable on an 80 character device.
115 -- If the Write_Str fits on one line, it is short enough!
117 -- Line for -gnata switch
119 Write_Switch_Char
("a");
120 Write_Line
("Assertions enabled. Pragma Assert/Debug to be activated");
122 -- Line for -gnatA switch
124 Write_Switch_Char
("A");
125 Write_Line
("Avoid processing gnat.adc, if present file will be ignored");
127 -- Line for -gnatb switch
129 Write_Switch_Char
("b");
130 Write_Line
("Generate brief messages to stderr even if verbose mode set");
132 -- Line for -gnatc switch
134 Write_Switch_Char
("c");
135 Write_Line
("Check syntax and semantics only (no code generation)");
137 Write_Switch_Char
("C");
138 Write_Line
("Compress names in external names and debug info tables");
140 -- Line for -gnatd switch
142 Write_Switch_Char
("d?");
143 Write_Line
("Compiler debug option ? (a-z,A-Z,0-9), see debug.adb");
145 -- Line for -gnatD switch
147 Write_Switch_Char
("D");
148 Write_Line
("Debug expanded generated code rather than source code");
150 -- Line for -gnatec switch
152 Write_Switch_Char
("ec?");
153 Write_Line
("Specify configuration pragmas file, e.g. -gnatec/x/f.adc");
155 -- Line for -gnatem switch
157 Write_Switch_Char
("em?");
158 Write_Line
("Specify mapping file, e.g. -gnatemmapping");
160 -- Line for -gnatE switch
162 Write_Switch_Char
("E");
163 Write_Line
("Dynamic elaboration checking mode enabled");
165 -- Line for -gnatf switch
167 Write_Switch_Char
("f");
168 Write_Line
("Full errors. Verbose details, all undefined references");
170 -- Line for -gnatF switch
172 Write_Switch_Char
("F");
173 Write_Line
("Force all import/export external names to all uppercase");
175 -- Line for -gnatg switch
177 Write_Switch_Char
("g");
178 Write_Line
("GNAT implementation mode (used for compiling GNAT units)");
180 -- Line for -gnatG switch
182 Write_Switch_Char
("G");
183 Write_Line
("Output generated expanded code in source form");
185 -- Line for -gnath switch
187 Write_Switch_Char
("h");
188 Write_Line
("Output this usage (help) information");
190 -- Line for -gnati switch
192 Write_Switch_Char
("i?");
193 Write_Line
("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)");
195 -- Line for -gnatk switch
197 Write_Switch_Char
("k");
198 Write_Line
("Limit file names to nnn characters (k = krunch)");
200 -- Line for -gnatl switch
202 Write_Switch_Char
("l");
203 Write_Line
("Output full source listing with embedded error messages");
205 -- Line for -gnatL switch
207 Write_Switch_Char
("L");
208 Write_Line
("Use longjmp/setjmp for exception handling");
210 -- Line for -gnatm switch
212 Write_Switch_Char
("mnnn");
213 Write_Line
("Limit number of detected errors to nnn (1-999)");
215 -- Line for -gnatn switch
217 Write_Switch_Char
("n");
218 Write_Line
("Inlining of subprograms (apply pragma Inline across units)");
220 -- Line for -gnatN switch
222 Write_Switch_Char
("N");
223 Write_Line
("Full (frontend) inlining of subprograqms");
225 -- Line for -gnato switch
227 Write_Switch_Char
("o");
228 Write_Line
("Enable overflow checking (off by default)");
230 -- Line for -gnatO switch
232 Write_Switch_Char
("O nm ");
233 Write_Line
("Set name of output ali file (internal switch)");
235 -- Line for -gnatp switch
237 Write_Switch_Char
("p");
238 Write_Line
("Suppress all checks");
240 -- Line for -gnatP switch
242 Write_Switch_Char
("P");
243 Write_Line
("Generate periodic calls to System.Polling.Poll");
245 -- Line for -gnatq switch
247 Write_Switch_Char
("q");
248 Write_Line
("Don't quit, try semantics, even if parse errors");
250 -- Line for -gnatQ switch
252 Write_Switch_Char
("Q");
253 Write_Line
("Don't quit, write ali/tree file even if compile errors");
255 -- Line for -gnatR switch
257 Write_Switch_Char
("R?");
258 Write_Line
("List rep inf (?=0/1/2/3 for none/types/all/variable)");
260 -- Lines for -gnats switch
262 Write_Switch_Char
("s");
263 Write_Line
("Syntax check only");
265 -- Lines for -gnatt switch
267 Write_Switch_Char
("t");
268 Write_Line
("Tree output file to be generated");
270 -- Line for -gnatT switch
272 Write_Switch_Char
("Tnnn");
273 Write_Line
("All compiler tables start at nnn times usual starting size");
275 -- Line for -gnatu switch
277 Write_Switch_Char
("u");
278 Write_Line
("List units for this compilation");
280 -- Line for -gnatU switch
282 Write_Switch_Char
("U");
283 Write_Line
("Enable unique tag for error messages");
285 -- Line for -gnatv switch
287 Write_Switch_Char
("v");
288 Write_Line
("Verbose mode. Full error output with source lines to stdout");
290 -- Line for -gnatV switch
292 Write_Switch_Char
("Vxx");
294 ("Enable selected validity checking mode, xx = list of parameters:");
295 Write_Line
(" a turn on all validity checking options");
296 Write_Line
(" c turn on checking for copies");
297 Write_Line
(" C turn off checking for copies");
298 Write_Line
(" d turn on default (RM) checking");
299 Write_Line
(" D turn off default (RM) checking");
300 Write_Line
(" f turn on checking for floating-point");
301 Write_Line
(" F turn off checking for floating-point");
302 Write_Line
(" i turn on checking for in params");
303 Write_Line
(" I turn off checking for in params");
304 Write_Line
(" m turn on checking for in out params");
305 Write_Line
(" M turn off checking for in out params");
306 Write_Line
(" o turn on checking for operators/attributes");
307 Write_Line
(" O turn off checking for operators/attributes");
308 Write_Line
(" r turn on checking for returns");
309 Write_Line
(" R turn off checking for returns");
310 Write_Line
(" s turn on checking for subscripts");
311 Write_Line
(" S turn off checking for subscripts");
312 Write_Line
(" t turn on checking for tests");
313 Write_Line
(" T turn off checking for tests");
314 Write_Line
(" n turn off all validity checks (including RM)");
316 -- Lines for -gnatw switch
318 Write_Switch_Char
("wxx");
319 Write_Line
("Enable selected warning modes, xx = list of parameters:");
320 Write_Line
(" a turn on all optional warnings (except b,d,h)");
321 Write_Line
(" A turn off all optional warnings");
322 Write_Line
(" b turn on biased rounding warnings");
323 Write_Line
(" B turn off biased rounding warnings");
324 Write_Line
(" c turn on constant conditional warnings");
325 Write_Line
(" C* turn off constant conditional warnings");
326 Write_Line
(" d turn on implicit dereference warnings");
327 Write_Line
(" D* turn off implicit dereference warnings");
328 Write_Line
(" e treat all warnings as errors");
329 Write_Line
(" f turn on unreferenced formal warnings");
330 Write_Line
(" F* turn off unreferenced formal warnings");
331 Write_Line
(" h turn on warnings for hiding variables");
332 Write_Line
(" H* turn off warnings for hiding variables");
333 Write_Line
(" i* turn on warnings for implementation units");
334 Write_Line
(" I turn off warnings for implementation units");
335 Write_Line
(" l turn on elaboration warnings");
336 Write_Line
(" L* turn off elaboration warnings");
337 Write_Line
(" o* turn on address clause overlay warnings");
338 Write_Line
(" O turn off address clause overlay warnings");
339 Write_Line
(" p turn on warnings for ineffective pragma inline");
340 Write_Line
(" P* turn off warnings for ineffective pragma inline");
341 Write_Line
(" r turn on redundant construct warnings");
342 Write_Line
(" R* turn off redundant construct warnings");
343 Write_Line
(" s suppress all warnings");
344 Write_Line
(" u turn on warnings for unused entities");
345 Write_Line
(" U* turn off warnings for unused entities");
346 Write_Line
(" * indicates default in above list");
348 -- Line for -gnatW switch
350 Write_Switch_Char
("W");
351 Write_Str
("Wide character encoding method (");
353 for J
in WC_Encoding_Method
loop
354 Write_Char
(WC_Encoding_Letters
(J
));
356 if J
= WC_Encoding_Method
'Last then
365 -- Line for -gnatx switch
367 Write_Switch_Char
("x");
368 Write_Line
("Suppress output of cross-reference information");
370 -- Line for -gnatX switch
372 Write_Switch_Char
("X");
373 Write_Line
("Language extensions permitted");
375 -- Lines for -gnaty switch
377 Write_Switch_Char
("y");
378 Write_Line
("Enable all style checks except 'o', indent=3");
380 Write_Switch_Char
("yxx");
381 Write_Line
("Enable selected style checks xx = list of parameters:");
382 Write_Line
(" 1-9 check indentation");
383 Write_Line
(" a check attribute casing");
384 Write_Line
(" b check no blanks at end of lines");
385 Write_Line
(" c check comment format");
386 Write_Line
(" e check end/exit labels present");
387 Write_Line
(" f check no form feeds/vertical tabs in source");
388 Write_Line
(" h check no horizontal tabs in source");
389 Write_Line
(" i check if-then layout");
390 Write_Line
(" k check casing rules for keywords, identifiers");
391 Write_Line
(" l check reference manual layout");
392 Write_Line
(" m check line length <= 79 characters");
393 Write_Line
(" n check casing of package Standard identifiers");
394 Write_Line
(" Mnnn check line length <= nnn characters");
395 Write_Line
(" o check subprogram bodies in alphabetical order");
396 Write_Line
(" p check pragma casing");
397 Write_Line
(" r check RM column layout");
398 Write_Line
(" s check separate subprogram specs present");
399 Write_Line
(" t check token separation rules");
401 -- Lines for -gnatz switch
403 Write_Switch_Char
("z");
404 Write_Line
("Distribution stub generation (r/s for receiver/sender stubs)");
406 -- Line for -gnatZ switch
408 Write_Switch_Char
("Z");
409 Write_Line
("Use zero cost exception handling");
411 -- Line for -gnat83 switch
413 Write_Switch_Char
("83");
414 Write_Line
("Enforce Ada 83 restrictions");