1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1992-2001, 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 default switch character 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
47 Write_Char (Switch_Character);
51 for J in 1 .. 12 - 3 - Prefix'Length - Sw'Length loop
54 end Write_Switch_Char;
56 -- Start of processing for Usage
61 -- For gnatmake, we are appending this information to the end of
62 -- the normal gnatmake output, so generate appropriate header
65 and then (Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake"
67 Name_Buffer (Name_Len - 7 .. Name_Len) = "GNATMAKE")
70 Write_Line ("Compiler switches (passed to the compiler by gnatmake):");
75 Write_Str ("Usage: ");
78 Write_Str ("switches sfile");
84 Write_Line (" sfile Source file name");
89 -- Common GCC switches not available in JGNAT
91 if not Hostparm.Java_VM then
92 Write_Switch_Char ("fstack-check ", "");
93 Write_Line ("Generate stack checking code");
95 Write_Switch_Char ("fno-inline ", "");
96 Write_Line ("Inhibit all inlining (makes executable smaller)");
99 -- Common switches available to both GCC and JGNAT
101 Write_Switch_Char ("g ", "");
102 Write_Line ("Generate debugging information");
104 Write_Switch_Char ("Idir ", "");
105 Write_Line ("Specify source files search path");
107 Write_Switch_Char ("I- ", "");
108 Write_Line ("Do not look for sources in current directory");
110 Write_Switch_Char ("O[0123] ", "");
111 Write_Line ("Control the optimization level");
115 -- Individual lines for switches. Write_Switch_Char outputs fourteen
116 -- characters, so the remaining message is allowed to be a maximum
117 -- of 65 characters to be comfortable on an 80 character device.
118 -- If the Write_Str fits on one line, it is short enough!
120 -- Line for -gnata switch
122 Write_Switch_Char ("a");
123 Write_Line ("Assertions enabled. Pragma Assert/Debug to be activated");
125 -- Line for -gnatA switch
127 Write_Switch_Char ("A");
128 Write_Line ("Avoid processing gnat.adc, if present file will be ignored");
130 -- Line for -gnatb switch
132 Write_Switch_Char ("b");
133 Write_Line ("Generate brief messages to stderr even if verbose mode set");
135 -- Line for -gnatc switch
137 Write_Switch_Char ("c");
138 Write_Line ("Check syntax and semantics only (no code generation)");
140 Write_Switch_Char ("C");
141 Write_Line ("Compress names in external names and debug info tables");
143 -- Line for -gnatd switch
145 Write_Switch_Char ("d?");
146 Write_Line ("Compiler debug option ? (a-z,A-Z,0-9), see debug.adb");
148 -- Line for -gnatD switch
150 Write_Switch_Char ("D");
151 Write_Line ("Debug expanded generated code rather than source code");
153 -- Line for -gnatec switch
155 Write_Switch_Char ("ec?");
156 Write_Line ("Specify configuration pragmas file, e.g. -gnatec/x/f.adc");
158 -- Line for -gnatE switch
160 Write_Switch_Char ("E");
161 Write_Line ("Dynamic elaboration checking mode enabled");
163 -- Line for -gnatf switch
165 Write_Switch_Char ("f");
166 Write_Line ("Full errors. Verbose details, all undefined references");
168 -- Line for -gnatF switch
170 Write_Switch_Char ("F");
171 Write_Line ("Force all import/export external names to all uppercase");
173 -- Line for -gnatg switch
175 Write_Switch_Char ("g");
176 Write_Line ("GNAT implementation mode (used for compiling GNAT units)");
178 -- Line for -gnatG switch
180 Write_Switch_Char ("G");
181 Write_Line ("Output generated expanded code in source form");
183 -- Line for -gnath switch
185 Write_Switch_Char ("h");
186 Write_Line ("Output this usage (help) information");
188 -- Line for -gnati switch
190 Write_Switch_Char ("i?");
191 Write_Line ("Identifier char set (?=1/2/3/4/8/p/f/n/w)");
193 -- Line for -gnatk switch
195 Write_Switch_Char ("k");
196 Write_Line ("Limit file names to nnn characters (k = krunch)");
198 -- Line for -gnatl switch
200 Write_Switch_Char ("l");
201 Write_Line ("Output full source listing with embedded error messages");
203 -- Line for -gnatL switch
205 Write_Switch_Char ("L");
206 Write_Line ("Use longjmp/setjmp for exception handling");
208 -- Line for -gnatm switch
210 Write_Switch_Char ("mnnn");
211 Write_Line ("Limit number of detected errors to nnn (1-999)");
213 -- Line for -gnatn switch
215 Write_Switch_Char ("n");
216 Write_Line ("Inlining of subprograms (apply pragma Inline across units)");
218 -- Line for -gnatN switch
220 Write_Switch_Char ("N");
221 Write_Line ("Full (frontend) inlining of subprograqms");
223 -- Line for -gnato switch
225 Write_Switch_Char ("o");
226 Write_Line ("Enable overflow checking (off by default)");
228 -- Line for -gnatO switch
230 Write_Switch_Char ("O nm ");
231 Write_Line ("Set name of output ali file (internal switch)");
233 -- Line for -gnatp switch
235 Write_Switch_Char ("p");
236 Write_Line ("Suppress all checks");
238 -- Line for -gnatP switch
240 Write_Switch_Char ("P");
241 Write_Line ("Generate periodic calls to System.Polling.Poll");
243 -- Line for -gnatq switch
245 Write_Switch_Char ("q");
246 Write_Line ("Don't quit, try semantics, even if parse errors");
248 -- Line for -gnatQ switch
250 Write_Switch_Char ("Q");
251 Write_Line ("Don't quit, write ali/tree file even if compile errors");
253 -- Line for -gnatR switch
255 Write_Switch_Char ("R?");
256 Write_Line ("List rep inf (?=0/1/2/3 for none/types/all/variable)");
258 -- Lines for -gnats switch
260 Write_Switch_Char ("s");
261 Write_Line ("Syntax check only");
263 -- Lines for -gnatt switch
265 Write_Switch_Char ("t");
266 Write_Line ("Tree output file to be generated");
268 -- Line for -gnatT switch
270 Write_Switch_Char ("Tnnn");
271 Write_Line ("All compiler tables start at nnn times usual starting size");
273 -- Line for -gnatu switch
275 Write_Switch_Char ("u");
276 Write_Line ("List units for this compilation");
278 -- Line for -gnatU switch
280 Write_Switch_Char ("U");
281 Write_Line ("Enable unique tag for error messages");
283 -- Line for -gnatv switch
285 Write_Switch_Char ("v");
286 Write_Line ("Verbose mode. Full error output with source lines to stdout");
288 -- Line for -gnatV switch
290 Write_Switch_Char ("V?");
292 ("Validity checking (?=ndcte or 0-4 None/Default/Copy/Test/Exprs)");
294 -- Lines for -gnatw switch
296 Write_Switch_Char ("wxx");
297 Write_Line ("Enable selected warning modes, xx = list of parameters:");
298 Write_Line (" a turn on all optional warnings (except b,h)");
299 Write_Line (" A turn off all optional warnings");
300 Write_Line (" b turn on biased rounding warnings");
301 Write_Line (" B turn off biased rounding warnings");
302 Write_Line (" c turn on constant conditional warnings");
303 Write_Line (" C* turn off constant conditional warnings");
304 Write_Line (" e treat all warnings as errors");
305 Write_Line (" h turn on warnings for hiding variables");
306 Write_Line (" H* turn off warnings for hiding variables");
307 Write_Line (" i* turn on warnings for implementation units");
308 Write_Line (" I turn off warnings for implementation units");
309 Write_Line (" l turn on elaboration warnings");
310 Write_Line (" L* turn off elaboration warnings");
311 Write_Line (" o* turn on address clause overlay warnings");
312 Write_Line (" O turn off address clause overlay warnings");
313 Write_Line (" p turn on warnings for ineffective pragma inline");
314 Write_Line (" P* turn off warnings for ineffective pragma inline");
315 Write_Line (" r turn on redundant construct warnings");
316 Write_Line (" R* turn off redundant construct warnings");
317 Write_Line (" s suppress all warnings");
318 Write_Line (" u turn on warnings for unused entities");
319 Write_Line (" U* turn off warnings for unused entities");
320 Write_Line (" * indicates default in above list");
322 -- Line for -gnatW switch
324 Write_Switch_Char ("W");
325 Write_Str ("Wide character encoding method (");
327 for J in WC_Encoding_Method loop
328 Write_Char (WC_Encoding_Letters (J));
330 if J = WC_Encoding_Method'Last then
339 -- Line for -gnatx switch
341 Write_Switch_Char ("x");
342 Write_Line ("Suppress output of cross-reference information");
344 -- Line for -gnatX switch
346 Write_Switch_Char ("X");
347 Write_Line ("Language extensions permitted");
349 -- Lines for -gnaty switch
351 Write_Switch_Char ("y");
352 Write_Line ("Enable all style checks");
354 Write_Switch_Char ("yxx");
355 Write_Line ("Enable selected style checks xx = list of parameters:");
356 Write_Line (" 1-9 check indentation");
357 Write_Line (" a check attribute casing");
358 Write_Line (" b check no blanks at end of lines");
359 Write_Line (" c check comment format");
360 Write_Line (" e check end/exit labels present");
361 Write_Line (" f check no form feeds/vertical tabs in source");
362 Write_Line (" h check no horizontal tabs in source");
363 Write_Line (" i check if-then layout");
364 Write_Line (" k check casing rules for keywords, identifiers");
365 Write_Line (" l check reference manual layout");
366 Write_Line (" m check line length <= 79 characters");
367 Write_Line (" n check casing of package Standard identifiers");
368 Write_Line (" Mnnn check line length <= nnn characters");
369 Write_Line (" o check subprogram bodies in alphabetical order");
370 Write_Line (" p check pragma casing");
371 Write_Line (" r check RM column layout");
372 Write_Line (" s check separate subprogram specs present");
373 Write_Line (" t check token separation rules");
375 -- Lines for -gnatz switch
377 Write_Switch_Char ("z");
378 Write_Line ("Distribution stub generation (r/s for receiver/sender stubs)");
380 -- Line for -gnatZ switch
382 Write_Switch_Char ("Z");
383 Write_Line ("Use zero cost exception handling");
385 -- Line for -gnat83 switch
387 Write_Switch_Char ("83");
388 Write_Line ("Enforce Ada 83 restrictions");