------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- U S A G E -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2007, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with Targparm; use Targparm; with Namet; use Namet; with Opt; use Opt; with Osint; use Osint; with Output; use Output; with System.WCh_Con; use System.WCh_Con; procedure Usage is procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat"); -- Output two spaces followed by the switch character minus followed -- Prefix, followed by the string given as the argument, and then -- enough blanks to tab to column 13, i.e. assuming Sw is not longer -- than 5 characters, the maximum allowed, Write_Switch_Char will -- always output exactly 12 characters. ----------------------- -- Write_Switch_Char -- ----------------------- procedure Write_Switch_Char (Sw : String; Prefix : String := "gnat") is begin Write_Str (" -"); Write_Str (Prefix); Write_Str (Sw); for J in 1 .. 12 - 3 - Prefix'Length - Sw'Length loop Write_Char (' '); end loop; end Write_Switch_Char; -- Start of processing for Usage begin Find_Program_Name; -- For gnatmake, we are appending this information to the end of -- the normal gnatmake output, so generate appropriate header if Name_Len >= 8 and then (Name_Buffer (Name_Len - 7 .. Name_Len) = "gnatmake" or else Name_Buffer (Name_Len - 7 .. Name_Len) = "GNATMAKE") then Write_Eol; Write_Line ("Compiler switches (passed to the compiler by gnatmake):"); else -- Usage line Write_Str ("Usage: "); Write_Program_Name; Write_Char (' '); Write_Str ("switches sfile"); Write_Eol; Write_Eol; -- Line for sfile Write_Line (" sfile Source file name"); end if; Write_Eol; -- Common GCC switches not available in JGNAT/MGNAT if VM_Target = No_VM then Write_Switch_Char ("fstack-check ", ""); Write_Line ("Generate stack checking code"); Write_Switch_Char ("fno-inline ", ""); Write_Line ("Inhibit all inlining (makes executable smaller)"); end if; -- Common switches available to both GCC and JGNAT Write_Switch_Char ("g ", ""); Write_Line ("Generate debugging information"); Write_Switch_Char ("Idir ", ""); Write_Line ("Specify source files search path"); Write_Switch_Char ("I- ", ""); Write_Line ("Do not look for sources in current directory"); Write_Switch_Char ("O[0123] ", ""); Write_Line ("Control the optimization level"); Write_Eol; -- Individual lines for switches. Write_Switch_Char outputs fourteen -- characters, so the remaining message is allowed to be a maximum -- of 65 characters to be comfortable on an 80 character device. -- If the Write_Str fits on one line, it is short enough! -- Line for -gnata switch Write_Switch_Char ("a"); Write_Line ("Assertions enabled. Pragma Assert/Debug to be activated"); -- Line for -gnatA switch Write_Switch_Char ("A"); Write_Line ("Avoid processing gnat.adc, if present file will be ignored"); -- Line for -gnatb switch Write_Switch_Char ("b"); Write_Line ("Generate brief messages to stderr even if verbose mode set"); -- Line for -gnatc switch Write_Switch_Char ("c"); Write_Line ("Check syntax and semantics only (no code generation)"); -- Line for -gnatd switch Write_Switch_Char ("d?"); Write_Line ("Compiler debug option ? ([.]a-z,A-Z,0-9), see debug.adb"); -- Line for -gnatD switch Write_Switch_Char ("D"); Write_Line ("Debug expanded generated code rather than source code"); -- Line for -gnatec switch Write_Switch_Char ("ec=?"); Write_Line ("Specify configuration pragmas file, e.g. -gnatec=/x/f.adc"); -- Line for -gnateD switch Write_Switch_Char ("eD?"); Write_Line ("Define or redefine preprocessing symbol, e.g. -gnateDsym=val"); -- Line for -gnatef switch Write_Switch_Char ("ef"); Write_Line ("Full source path in brief error messages"); -- Line for -gnateI switch Write_Switch_Char ("eInn"); Write_Line ("Index in multi-unit source, e.g. -gnateI2"); -- Line for -gnatem switch Write_Switch_Char ("em=?"); Write_Line ("Specify mapping file, e.g. -gnatem=mapping"); -- Line for -gnatep switch Write_Switch_Char ("ep=?"); Write_Line ("Specify preprocessing data file, e.g. -gnatep=prep.data"); -- Line for -gnatE switch Write_Switch_Char ("E"); Write_Line ("Dynamic elaboration checking mode enabled"); -- Line for -gnatf switch Write_Switch_Char ("f"); Write_Line ("Full errors. Verbose details, all undefined references"); -- Line for -gnatF switch Write_Switch_Char ("F"); Write_Line ("Force all import/export external names to all uppercase"); -- Line for -gnatg switch Write_Switch_Char ("g"); Write_Line ("GNAT implementation mode (used for compiling GNAT units)"); -- Line for -gnatG switch Write_Switch_Char ("G"); Write_Line ("Output generated expanded code in source form"); -- Line for -gnath switch Write_Switch_Char ("h"); Write_Line ("Output this usage (help) information"); -- Line for -gnati switch Write_Switch_Char ("i?"); Write_Line ("Identifier char set (?=1/2/3/4/5/8/9/p/f/n/w)"); -- Line for -gnatI switch Write_Switch_Char ("I"); Write_Line ("Ignore all representation clauses"); -- Line for -gnatj switch Write_Switch_Char ("jnn"); Write_Line ("Format error and warning messages to fit nn character lines"); -- Line for -gnatk switch Write_Switch_Char ("k"); Write_Line ("Limit file names to nn characters (k = krunch)"); -- Lines for -gnatl switch Write_Switch_Char ("l"); Write_Line ("Output full source listing with embedded error messages"); Write_Switch_Char ("l=f"); Write_Line ("Output full source listing to specified file"); -- Line for -gnatL switch Write_Switch_Char ("L"); Write_Line ("List corresponding source text in -gnatG or -gnatD output"); -- Line for -gnatm switch Write_Switch_Char ("mnn"); Write_Line ("Limit number of detected errors to nn (1-999999)"); -- Line for -gnatn switch Write_Switch_Char ("n"); Write_Line ("Inlining of subprograms (apply pragma Inline across units)"); -- Line for -gnatN switch Write_Switch_Char ("N"); Write_Line ("Full (frontend) inlining of subprograms"); -- Line for -gnato switch Write_Switch_Char ("o"); Write_Line ("Enable overflow checking (off by default)"); -- Line for -gnatO switch Write_Switch_Char ("O nm "); Write_Line ("Set name of output ali file (internal switch)"); -- Line for -gnatp switch Write_Switch_Char ("p"); Write_Line ("Suppress all checks"); -- Line for -gnatP switch Write_Switch_Char ("P"); Write_Line ("Generate periodic calls to System.Polling.Poll"); -- Line for -gnatq switch Write_Switch_Char ("q"); Write_Line ("Don't quit, try semantics, even if parse errors"); -- Line for -gnatQ switch Write_Switch_Char ("Q"); Write_Line ("Don't quit, write ali/tree file even if compile errors"); -- Lines for -gnatR switch Write_Switch_Char ("R?"); Write_Line ("List rep info (?=0/1/2/3 for none/types/all/variable)"); Write_Switch_Char ("R?s"); Write_Line ("List rep info to file.rep instead of standard output"); -- Lines for -gnats switch Write_Switch_Char ("s"); Write_Line ("Syntax check only"); -- Lines for -gnatS switch Write_Switch_Char ("S"); Write_Line ("Print listing of package Standard"); -- Lines for -gnatt switch Write_Switch_Char ("t"); Write_Line ("Tree output file to be generated"); -- Line for -gnatT switch Write_Switch_Char ("Tnn"); Write_Line ("All compiler tables start at nn times usual starting size"); -- Line for -gnatu switch Write_Switch_Char ("u"); Write_Line ("List units for this compilation"); -- Line for -gnatU switch Write_Switch_Char ("U"); Write_Line ("Enable unique tag for error messages"); -- Line for -gnatv switch Write_Switch_Char ("v"); Write_Line ("Verbose mode. Full error output with source lines to stdout"); -- Line for -gnatV switch Write_Switch_Char ("Vxx"); Write_Line ("Enable selected validity checking mode, xx = list of parameters:"); Write_Line (" a turn on all validity checking options"); Write_Line (" c turn on checking for copies"); Write_Line (" C turn off checking for copies"); Write_Line (" d turn on default (RM) checking"); Write_Line (" D turn off default (RM) checking"); Write_Line (" e turn on checking for elementary components"); Write_Line (" E turn off checking for elementary components"); Write_Line (" f turn on checking for floating-point"); Write_Line (" F turn off checking for floating-point"); Write_Line (" i turn on checking for in params"); Write_Line (" I turn off checking for in params"); Write_Line (" m turn on checking for in out params"); Write_Line (" M turn off checking for in out params"); Write_Line (" o turn on checking for operators/attributes"); Write_Line (" O turn off checking for operators/attributes"); Write_Line (" p turn on checking for parameters"); Write_Line (" P turn off checking for parameters"); Write_Line (" r turn on checking for returns"); Write_Line (" R turn off checking for returns"); Write_Line (" s turn on checking for subscripts"); Write_Line (" S turn off checking for subscripts"); Write_Line (" t turn on checking for tests"); Write_Line (" T turn off checking for tests"); Write_Line (" n turn off all validity checks (including RM)"); -- Lines for -gnatw switch Write_Switch_Char ("wxx"); Write_Line ("Enable selected warning modes, xx = list of parameters:"); Write_Line (" a turn on all optional warnings (except d h l .o)"); Write_Line (" A turn off all optional warnings"); Write_Line (" b turn on warnings for bad fixed value " & "(not multiple of small)"); Write_Line (" B* turn off warnings for bad fixed value " & "(not multiple of small)"); Write_Line (" c turn on warnings for constant conditional"); Write_Line (" C* turn off warnings for constant conditional"); Write_Line (" .c turn on warnings for unrepped components"); Write_Line (" .C* turn off warnings for unrepped components"); Write_Line (" d turn on warnings for implicit dereference"); Write_Line (" D* turn off warnings for implicit dereference"); Write_Line (" e treat all warnings as errors"); Write_Line (" f turn on warnings for unreferenced formal"); Write_Line (" F* turn off warnings for unreferenced formal"); Write_Line (" g* turn on warnings for unrecognized pragma"); Write_Line (" G turn off warnings for unrecognized pragma"); Write_Line (" h turn on warnings for hiding variable "); Write_Line (" H* turn off warnings for hiding variable"); Write_Line (" i* turn on warnings for implementation unit"); Write_Line (" I turn off warnings for implementation unit"); Write_Line (" j turn on warnings for obsolescent " & "(annex J) feature"); Write_Line (" J* turn off warnings for obsolescent " & "(annex J) feature"); Write_Line (" k turn on warnings on constant variable"); Write_Line (" K* turn off warnings on constant variable"); Write_Line (" l turn on warnings for missing " & "elaboration pragma"); Write_Line (" L* turn off warnings for missing " & "elaboration pragma"); Write_Line (" m turn on warnings for variable assigned " & "but not read"); Write_Line (" M* turn off warnings for variable assigned " & "but not read"); Write_Line (" n* normal warning mode (cancels -gnatws/-gnatwe)"); Write_Line (" o* turn on warnings for address clause overlay"); Write_Line (" O turn off warnings for address clause overlay"); Write_Line (" .o turn on warnings for out parameter assigned " & "but not read"); Write_Line (" .O* turn off warnings for out parameter assigned " & "but not read"); Write_Line (" p turn on warnings for ineffective pragma " & "Inline in frontend"); Write_Line (" P* turn off warnings for ineffective pragma " & "Inline in frontend"); Write_Line (" q* turn on warnings for questionable " & "missing parentheses"); Write_Line (" Q turn off warnings for questionable " & "missing parentheses"); Write_Line (" r turn on warnings for redundant construct"); Write_Line (" R* turn off warnings for redundant construct"); Write_Line (" .r turn on warnings for object renaming function"); Write_Line (" .R* turn off warnings for object renaming function"); Write_Line (" s suppress all warnings"); Write_Line (" t turn on warnings for tracking deleted code"); Write_Line (" T* turn off warnings for tracking deleted code"); Write_Line (" u turn on warnings for unused entity"); Write_Line (" U* turn off warnings for unused entity"); Write_Line (" v* turn on warnings for unassigned variable"); Write_Line (" V turn off warnings for unassigned variable"); Write_Line (" w* turn on warnings for wrong low bound assumption"); Write_Line (" W turn off warnings for wrong low bound " & "assumption"); Write_Line (" x* turn on warnings for export/import"); Write_Line (" X turn off warnings for export/import"); Write_Line (" .x turn on warnings for non-local exceptions"); Write_Line (" .X* turn off warnings for non-local exceptions"); Write_Line (" y* turn on warnings for Ada 2005 incompatibility"); Write_Line (" Y turn off warnings for Ada 2005 incompatibility"); Write_Line (" z* turn on convention/size/align warnings for " & "unchecked conversion"); Write_Line (" Z turn off convention/size/align warnings for " & "unchecked conversion"); Write_Line (" * indicates default in above list"); -- Line for -gnatW switch Write_Switch_Char ("W"); Write_Str ("Wide character encoding method ("); for J in WC_Encoding_Method loop Write_Char (WC_Encoding_Letters (J)); if J = WC_Encoding_Method'Last then Write_Char (')'); else Write_Char ('/'); end if; end loop; Write_Eol; -- Line for -gnatx switch Write_Switch_Char ("x"); Write_Line ("Suppress output of cross-reference information"); -- Line for -gnatX switch Write_Switch_Char ("X"); Write_Line ("Language extensions permitted"); -- Lines for -gnaty switch Write_Switch_Char ("y"); Write_Line ("Enable default style checks (same as -gnaty3abcefhiklmnprst)"); Write_Switch_Char ("yxx"); Write_Line ("Enable selected style checks xx = list of parameters:"); Write_Line (" 1-9 check indentation"); Write_Line (" a check attribute casing"); Write_Line (" A check array attribute indexes"); Write_Line (" b check no blanks at end of lines"); Write_Line (" c check comment format"); Write_Line (" d check no DOS line terminators"); Write_Line (" e check end/exit labels present"); Write_Line (" f check no form feeds/vertical tabs in source"); Write_Line (" g check standard GNAT style rules"); Write_Line (" h check no horizontal tabs in source"); Write_Line (" i check if-then layout"); Write_Line (" I check mode in"); Write_Line (" k check casing rules for keywords"); Write_Line (" l check reference manual layout"); Write_Line (" Lnn check max nest level < nn "); Write_Line (" m check line length <= 79 characters"); Write_Line (" n check casing of package Standard identifiers"); Write_Line (" Mnn check line length <= nn characters"); Write_Line (" o check subprogram bodies in alphabetical order"); Write_Line (" p check pragma casing"); Write_Line (" r check casing for identifier references"); Write_Line (" s check separate subprogram specs present"); Write_Line (" S check separate lines after THEN or ELSE"); Write_Line (" t check token separation rules"); Write_Line (" u check no unnecessary blank lines"); Write_Line (" x check extra parentheses around conditionals"); -- Lines for -gnatyN switch Write_Switch_Char ("yN"); Write_Line ("Cancel all previously set style checks"); -- Lines for -gnatz switch Write_Switch_Char ("z"); Write_Line ("Distribution stub generation (r/c for receiver/caller stubs)"); -- Line for -gnat83 switch Write_Switch_Char ("83"); Write_Line ("Enforce Ada 83 restrictions"); -- Line for -gnat95 switch Write_Switch_Char ("95"); if Ada_Version_Default = Ada_95 then Write_Line ("Ada 95 mode (default)"); else Write_Line ("Enforce Ada 95 restrictions"); end if; -- Line for -gnat05 switch Write_Switch_Char ("05"); if Ada_Version_Default = Ada_05 then Write_Line ("Ada 2005 mode (default)"); else Write_Line ("Allow Ada 2005 extensions"); end if; end Usage;