c.opt revision 261188
1; Options for the C, ObjC, C++ and ObjC++ front ends.
2; Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
3;
4; This file is part of GCC.
5;
6; GCC is free software; you can redistribute it and/or modify it under
7; the terms of the GNU General Public License as published by the Free
8; Software Foundation; either version 2, or (at your option) any later
9; version.
10;
11; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12; WARRANTY; without even the implied warranty of MERCHANTABILITY or
13; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14; for more details.
15;
16; You should have received a copy of the GNU General Public License
17; along with GCC; see the file COPYING.  If not, write to the Free
18; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
19; 02110-1301, USA.
20
21; See the GCC internals manual for a description of this file's format.
22
23; $FreeBSD: stable/10/contrib/gcc/c.opt 261188 2014-01-26 19:49:54Z pfg $
24; Please try to keep this file in ASCII collating order.
25
26Language
27C
28
29Language
30ObjC
31
32Language
33C++
34
35Language
36ObjC++
37
38-output-pch=
39C ObjC C++ ObjC++ Joined Separate
40
41A
42C ObjC C++ ObjC++ Joined Separate
43-A<question>=<answer>	Assert the <answer> to <question>.  Putting '-' before <question> disables the <answer> to <question>
44
45C
46C ObjC C++ ObjC++
47Do not discard comments
48
49CC
50C ObjC C++ ObjC++
51Do not discard comments in macro expansions
52
53D
54C ObjC C++ ObjC++ Joined Separate
55-D<macro>[=<val>]	Define a <macro> with <val> as its value.  If just <macro> is given, <val> is taken to be 1
56
57E
58C ObjC C++ ObjC++ Undocumented
59
60F
61C ObjC C++ ObjC++ Joined Separate
62-F <dir>	Add <dir> to the end of the main framework include path
63
64H
65C ObjC C++ ObjC++
66Print the name of header files as they are used
67
68I
69C ObjC C++ ObjC++ Joined Separate
70-I <dir>	Add <dir> to the end of the main include path
71
72M
73C ObjC C++ ObjC++
74Generate make dependencies
75
76MD
77C ObjC C++ ObjC++ Separate
78Generate make dependencies and compile
79
80MF
81C ObjC C++ ObjC++ Joined Separate
82-MF <file>	Write dependency output to the given file
83
84MG
85C ObjC C++ ObjC++
86Treat missing header files as generated files
87
88MM
89C ObjC C++ ObjC++
90Like -M but ignore system header files
91
92MMD
93C ObjC C++ ObjC++ Separate
94Like -MD but ignore system header files
95
96MP
97C ObjC C++ ObjC++
98Generate phony targets for all headers
99
100MQ
101C ObjC C++ ObjC++ Joined Separate
102-MQ <target>	Add a MAKE-quoted target
103
104MT
105C ObjC C++ ObjC++ Joined Separate
106-MT <target>	Add an unquoted target
107
108P
109C ObjC C++ ObjC++
110Do not generate #line directives
111
112U
113C ObjC C++ ObjC++ Joined Separate
114-U<macro>	Undefine <macro>
115
116Wabi
117C++ ObjC++ Var(warn_abi)
118Warn about things that will change when compiling with an ABI-compliant compiler
119
120Waddress
121C ObjC C++ ObjC++ Var(warn_address)
122Warn about suspicious uses of memory addresses
123
124Wall
125C ObjC C++ ObjC++
126Enable most warning messages
127
128Wassign-intercept
129ObjC ObjC++ Var(warn_assign_intercept)
130Warn whenever an Objective-C assignment is being intercepted by the garbage collector
131
132Wbad-function-cast
133C ObjC Var(warn_bad_function_cast)
134Warn about casting functions to incompatible types
135
136Wc++-compat
137C ObjC Var(warn_cxx_compat)
138Warn about C constructs that are not in the common subset of C and C++
139
140
141Wcast-qual
142C ObjC C++ ObjC++ Var(warn_cast_qual)
143Warn about casts which discard qualifiers
144
145Wchar-subscripts
146C ObjC C++ ObjC++ Var(warn_char_subscripts)
147Warn about subscripts whose type is \"char\"
148
149Wcomment
150C ObjC C++ ObjC++
151Warn about possibly nested block comments, and C++ comments spanning more than one physical line
152
153Wcomments
154C ObjC C++ ObjC++
155Synonym for -Wcomment
156
157Wconversion
158C ObjC C++ ObjC++ Var(warn_conversion)
159Warn about possibly confusing type conversions
160
161Wctor-dtor-privacy
162C++ ObjC++ Var(warn_ctor_dtor_privacy)
163Warn when all constructors and destructors are private
164
165Wdeclaration-after-statement
166C ObjC Var(warn_declaration_after_statement)
167Warn when a declaration is found after a statement
168
169Wdeprecated
170C++ ObjC++ Var(warn_deprecated) Init(1)
171Warn about deprecated compiler features
172
173Wdiv-by-zero
174C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1)
175Warn about compile-time integer division by zero
176
177Weffc++
178C++ ObjC++ Var(warn_ecpp)
179Warn about violations of Effective C++ style rules
180
181Wendif-labels
182C ObjC C++ ObjC++
183Warn about stray tokens after #elif and #endif
184
185Werror
186C ObjC C++ ObjC++
187; Documented in common.opt
188
189Werror-implicit-function-declaration
190C ObjC RejectNegative
191Make implicit function declarations an error
192
193Wfloat-equal
194C ObjC C++ ObjC++ Var(warn_float_equal)
195Warn if testing floating point numbers for equality
196
197Wformat
198C ObjC C++ ObjC++
199Warn about printf/scanf/strftime/strfmon format string anomalies
200
201Wformat-extra-args
202C ObjC C++ ObjC++ Var(warn_format_extra_args)
203Warn if passing too many arguments to a function for its format string
204
205Wformat-nonliteral
206C ObjC C++ ObjC++ Var(warn_format_nonliteral)
207Warn about format strings that are not literals
208
209Wformat-security
210C ObjC C++ ObjC++ Var(warn_format_security)
211Warn about possible security problems with format functions
212
213Wformat-y2k
214C ObjC C++ ObjC++ Var(warn_format_y2k)
215Warn about strftime formats yielding 2-digit years
216
217Wformat-zero-length
218C ObjC Var(warn_format_zero_length)
219Warn about zero-length formats
220
221Wformat=
222C ObjC C++ ObjC++ Joined
223
224Winit-self
225C ObjC C++ ObjC++ Var(warn_init_self)
226Warn about variables which are initialized to themselves
227
228Wimplicit
229C ObjC C++ ObjC++
230
231Wimplicit-function-declaration
232C ObjC Var(mesg_implicit_function_declaration) Init(-1)
233Warn about implicit function declarations
234
235Wimplicit-int
236C ObjC Var(warn_implicit_int)
237Warn when a declaration does not specify a type
238
239Wimport
240C ObjC C++ ObjC++
241Deprecated.  This switch has no effect
242
243Wint-to-pointer-cast
244C ObjC Var(warn_int_to_pointer_cast) Init(1)
245Warn when there is a cast to a pointer from an integer of a different size
246
247Winvalid-offsetof
248C++ ObjC++ Var(warn_invalid_offsetof) Init(1)
249Warn about invalid uses of the \"offsetof\" macro
250
251Winvalid-pch
252C ObjC C++ ObjC++
253Warn about PCH files that are found but not used
254
255Wlong-long
256C ObjC C++ ObjC++ Var(warn_long_long) Init(1)
257Do not warn about using \"long long\" when -pedantic
258
259Wmain
260C ObjC
261Warn about suspicious declarations of \"main\"
262
263Wmissing-braces
264C ObjC C++ ObjC++ Var(warn_missing_braces)
265Warn about possibly missing braces around initializers
266
267Wmissing-declarations
268C ObjC Var(warn_missing_declarations)
269Warn about global functions without previous declarations
270
271Wmissing-field-initializers
272C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Init(-1)
273Warn about missing fields in struct initializers
274
275Wmissing-format-attribute
276C ObjC C++ ObjC++ Var(warn_missing_format_attribute)
277Warn about functions which might be candidates for format attributes
278
279Wmissing-include-dirs
280C ObjC C++ ObjC++
281Warn about user-specified include directories that do not exist
282
283Wmissing-prototypes
284C ObjC Var(warn_missing_prototypes)
285Warn about global functions without prototypes
286
287; APPLE LOCAL begin -Wmost
288Wmost
289C ObjC C++ ObjC++ 
290Like -Wall but without -Wparentheses
291; APPLE LOCAL end -Wmost
292
293Wmultichar
294C ObjC C++ ObjC++
295Warn about use of multi-character character constants
296
297Wnested-externs
298C ObjC Var(warn_nested_externs)
299Warn about \"extern\" declarations not at file scope
300
301; APPLE LOCAL begin -Wnewline-eof
302Wnewline-eof
303C ObjC C++ ObjC++
304Warn about files missing a newline at the end of the file
305; APPLE LOCAL end -Wnewline-eof
306
307Wnon-template-friend
308C++ ObjC++ Var(warn_nontemplate_friend) Init(1)
309Warn when non-templatized friend functions are declared within a template
310
311Wnon-virtual-dtor
312C++ ObjC++ Var(warn_nonvdtor)
313Warn about non-virtual destructors
314
315Wnonnull
316C ObjC Var(warn_nonnull)
317Warn about NULL being passed to argument slots marked as requiring non-NULL
318
319Wnormalized=
320C ObjC C++ ObjC++ Joined
321-Wnormalized=<id|nfc|nfkc>	Warn about non-normalised Unicode strings
322
323Wold-style-cast
324C++ ObjC++ Var(warn_old_style_cast)
325Warn if a C-style cast is used in a program
326
327Wold-style-definition
328C ObjC Var(warn_old_style_definition)
329Warn if an old-style parameter definition is used
330
331Woverlength-strings
332C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1)
333Warn if a string is longer than the maximum portable length specified by the standard
334
335Woverloaded-virtual
336C++ ObjC++ Var(warn_overloaded_virtual)
337Warn about overloaded virtual function names
338
339Woverride-init
340C ObjC Var(warn_override_init) Init(-1)
341Warn about overriding initializers without side effects
342
343Wparentheses
344C ObjC C++ ObjC++ Var(warn_parentheses)
345Warn about possibly missing parentheses
346
347Wpmf-conversions
348C++ ObjC++ Var(warn_pmf2ptr) Init(1)
349Warn when converting the type of pointers to member functions
350
351Wpointer-arith
352C ObjC C++ ObjC++ Var(warn_pointer_arith)
353Warn about function pointer arithmetic
354
355Wpointer-to-int-cast
356C ObjC Var(warn_pointer_to_int_cast) Init(1)
357Warn when a pointer is cast to an integer of a different size
358
359Wpragmas
360C ObjC C++ ObjC++ Var(warn_pragmas) Init(1)
361Warn about misuses of pragmas
362
363Wprotocol
364ObjC ObjC++ Var(warn_protocol) Init(1)
365Warn if inherited methods are unimplemented
366
367Wredundant-decls
368C ObjC C++ ObjC++ Var(warn_redundant_decls)
369Warn about multiple declarations of the same object
370
371Wreorder
372C++ ObjC++ Var(warn_reorder)
373Warn when the compiler reorders code
374
375Wreturn-type
376C ObjC C++ ObjC++ Var(warn_return_type)
377Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++)
378
379Wselector
380ObjC ObjC++ Var(warn_selector)
381Warn if a selector has multiple methods
382
383Wsequence-point
384C ObjC C++ ObjC++ Var(warn_sequence_point)
385Warn about possible violations of sequence point rules
386
387Wsign-compare
388C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1)
389Warn about signed-unsigned comparisons
390
391Wsign-promo
392C++ ObjC++ Var(warn_sign_promo)
393Warn when overload promotes from unsigned to signed
394
395Wstrict-null-sentinel
396C++ ObjC++
397Warn about uncasted NULL used as sentinel
398
399Wstrict-prototypes
400C ObjC Var(warn_strict_prototypes)
401Warn about unprototyped function declarations
402
403Wstrict-selector-match
404ObjC ObjC++ Var(warn_strict_selector_match)
405Warn if type signatures of candidate methods do not match exactly
406
407Wsynth
408C++ ObjC++ Var(warn_synth)
409Warn when synthesis behavior differs from Cfront
410
411Wsystem-headers
412C ObjC C++ ObjC++
413Do not suppress warnings from system headers
414
415Wtraditional
416C ObjC Var(warn_traditional)
417Warn about features not present in traditional C
418
419Wtrampolines
420Common Var(warn_trampolines)
421Warn when trampolines are emitted
422
423Wtrigraphs
424C ObjC C++ ObjC++
425Warn if trigraphs are encountered that might affect the meaning of the program
426
427Wundeclared-selector
428ObjC ObjC++ Var(warn_undeclared_selector)
429Warn about @selector()s without previously declared methods
430
431Wundef
432C ObjC C++ ObjC++
433Warn if an undefined macro is used in an #if directive
434
435Wunknown-pragmas
436C ObjC C++ ObjC++
437Warn about unrecognized pragmas
438
439Wunused-macros
440C ObjC C++ ObjC++
441Warn about macros defined in the main file that are not used
442
443Wvariadic-macros
444C ObjC C++ ObjC++
445Do not warn about using variadic macros when -pedantic
446
447Wvla
448C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning
449Warn if a variable length array is used
450
451Wwrite-strings
452C ObjC C++ ObjC++ Var(warn_write_strings)
453In C++, nonzero means warn about deprecated conversion from string literals to `char *'.  In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard.
454
455Wpointer-sign
456C ObjC Var(warn_pointer_sign) Init(-1)
457Warn when a pointer differs in signedness in an assignment
458
459ansi
460C ObjC C++ ObjC++
461A synonym for -std=c89 (for C) or -std=c++98 (for C++)
462
463d
464C ObjC C++ ObjC++ Joined
465; Documented in common.opt.  FIXME - what about -dI, -dD, -dN and -dD?
466
467faccess-control
468C++ ObjC++
469Enforce class member access control semantics
470
471fall-virtual
472C++ ObjC++
473
474falt-external-templates
475C++ ObjC++
476Change when template instances are emitted
477
478fasm
479C ObjC C++ ObjC++
480Recognize the \"asm\" keyword
481
482fbuiltin
483C ObjC C++ ObjC++
484Recognize built-in functions
485
486fbuiltin-
487C ObjC C++ ObjC++ Joined
488
489fcheck-new
490C++ ObjC++
491Check the return value of new
492
493fcond-mismatch
494C ObjC C++ ObjC++
495Allow the arguments of the '?' operator to have different types
496
497fconserve-space
498C++ ObjC++
499Reduce the size of object files
500
501fconstant-string-class=
502ObjC ObjC++ Joined
503-fconst-string-class=<name>	Use class <name> for constant strings
504
505fdefault-inline
506C++ ObjC++
507Inline member functions by default
508
509fdirectives-only
510C ObjC C++ ObjC++
511Preprocess directives only.
512
513fdollars-in-identifiers
514C ObjC C++ ObjC++
515Permit '$' as an identifier character
516
517felide-constructors
518C++ ObjC++
519
520fenforce-eh-specs
521C++ ObjC++
522Generate code to check exception specifications
523
524fenum-int-equiv
525C++ ObjC++
526
527fexec-charset=
528C ObjC C++ ObjC++ Joined RejectNegative
529-fexec-charset=<cset>	Convert all strings and character constants to character set <cset>
530
531fextended-identifiers
532C ObjC C++ ObjC++
533Permit universal character names (\\u and \\U) in identifiers
534
535finput-charset=
536C ObjC C++ ObjC++ Joined RejectNegative
537-finput-charset=<cset>	Specify the default character set for source files
538
539
540fexternal-templates
541C++ ObjC++
542
543ffor-scope
544C++ ObjC++
545Scope of for-init-statement variables is local to the loop
546
547ffreestanding
548C ObjC
549Do not assume that standard C libraries and \"main\" exist
550
551fgnu-keywords
552C++ ObjC++
553Recognize GNU-defined keywords
554
555fgnu-runtime
556ObjC ObjC++
557Generate code for GNU runtime environment
558
559fgnu89-inline
560C ObjC Var(flag_gnu89_inline) Init(-1)
561Use traditional GNU semantics for inline functions
562
563fguiding-decls
564C++ ObjC++
565
566fhandle-exceptions
567C++ ObjC++
568
569fhonor-std
570C++ ObjC++
571
572fhosted
573C ObjC
574Assume normal C execution environment
575
576fhuge-objects
577C++ ObjC++
578Enable support for huge objects
579
580fimplement-inlines
581C++ ObjC++
582Export functions even if they can be inlined
583
584fimplicit-inline-templates
585C++ ObjC++
586Emit implicit instantiations of inline templates
587
588fimplicit-templates
589C++ ObjC++
590Emit implicit instantiations of templates
591
592ffriend-injection
593C++ ObjC++ Var(flag_friend_injection)
594Inject friend functions into enclosing namespace
595
596flabels-ok
597C++ ObjC++
598
599flax-vector-conversions
600C ObjC C++ ObjC++
601Allow implicit conversions between vectors with differing numbers of subparts and/or differing element types.
602
603fms-extensions
604C ObjC C++ ObjC++
605Don't warn about uses of Microsoft extensions
606
607fname-mangling-version-
608C++ ObjC++ Joined
609
610fnew-abi
611C++ ObjC++
612
613; APPLE LOCAL begin nested functions 4258406 4357979
614fnested-functions
615C ObjC Var(flag_nested_functions)
616Allow nested functions.
617; APPLE LOCAL end nested functions 4258406 4357979
618
619fnext-runtime
620ObjC ObjC++
621Generate code for NeXT (Apple Mac OS X) runtime environment
622
623fnil-receivers
624ObjC ObjC++
625Assume that receivers of Objective-C messages may be nil
626
627fnonansi-builtins
628C++ ObjC++
629
630fnonnull-objects
631C++ ObjC++
632
633; Generate special '- .cxx_construct' and '- .cxx_destruct' methods
634; to initialize any non-POD ivars in Objective-C++ classes.
635fobjc-call-cxx-cdtors
636ObjC++ Var(flag_objc_call_cxx_cdtors)
637Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed
638
639fobjc-direct-dispatch
640ObjC ObjC++ Var(flag_objc_direct_dispatch)
641Allow fast jumps to the message dispatcher
642
643; Nonzero means that we will allow new ObjC exception syntax (@throw,
644; @try, etc.) in source code.
645fobjc-exceptions
646ObjC ObjC++ Var(flag_objc_exceptions)
647Enable Objective-C exception and synchronization syntax
648
649fobjc-gc
650ObjC ObjC++ Var(flag_objc_gc)
651Enable garbage collection (GC) in Objective-C/Objective-C++ programs
652
653; APPLE LOCAL begin radar 5811887 - blocks
654fblocks
655C ObjC C++ ObjC++ Var(flag_blocks) Init(-1)
656Program supports c/objc extension blocks
657; APPLE LOCAL end radar 5811887 - blocks
658
659; Nonzero means that we generate NeXT setjmp based exceptions.
660fobjc-sjlj-exceptions
661ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1)
662Enable Objective-C setjmp exception handling runtime
663
664fopenmp
665C ObjC C++ ObjC++ Var(flag_openmp)
666Enable OpenMP
667
668foperator-names
669C++ ObjC++
670Recognize C++ kewords like \"compl\" and \"xor\"
671
672foptional-diags
673C++ ObjC++
674Enable optional diagnostics
675
676fpch-deps
677C ObjC C++ ObjC++
678
679fpch-preprocess
680C ObjC C++ ObjC++
681Look for and use PCH files even when preprocessing
682
683fpermissive
684C++ ObjC++
685Downgrade conformance errors to warnings
686
687fpreprocessed
688C ObjC C++ ObjC++
689Treat the input file as already preprocessed
690
691freplace-objc-classes
692ObjC ObjC++
693Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime
694
695frepo
696C++ ObjC++
697Enable automatic template instantiation
698
699frtti
700C++ ObjC++
701Generate run time type descriptor information
702
703fshort-double
704C ObjC C++ ObjC++
705Use the same size for double as for float
706
707fshort-enums
708C ObjC C++ ObjC++
709Use the narrowest integer type possible for enumeration types
710
711fshort-wchar
712C ObjC C++ ObjC++
713Force the underlying type for \"wchar_t\" to be \"unsigned short\"
714
715fsigned-bitfields
716C ObjC C++ ObjC++
717When \"signed\" or \"unsigned\" is not given make the bitfield signed
718
719fsigned-char
720C ObjC C++ ObjC++
721Make \"char\" signed by default
722
723fsquangle
724C++ ObjC++
725
726fstats
727C++ ObjC++
728Display statistics accumulated during compilation
729
730fstrict-prototype
731C++ ObjC++
732
733ftabstop=
734C ObjC C++ ObjC++ Joined RejectNegative UInteger
735-ftabstop=<number>	Distance between tab stops for column reporting
736
737ftemplate-depth-
738C++ ObjC++ Joined RejectNegative UInteger
739-ftemplate-depth-<number>	Specify maximum template instantiation depth
740
741fthis-is-variable
742C++ ObjC++
743
744fthreadsafe-statics
745C++ ObjC++
746-fno-threadsafe-statics	Do not generate thread-safe code for initializing local statics
747
748funsigned-bitfields
749C ObjC C++ ObjC++
750When \"signed\" or \"unsigned\" is not given make the bitfield unsigned
751
752funsigned-char
753C ObjC C++ ObjC++
754Make \"char\" unsigned by default
755
756fuse-cxa-atexit
757C++ ObjC++
758Use __cxa_atexit to register destructors
759
760fuse-cxa-get-exception-ptr
761C++ ObjC++
762Use __cxa_get_exception_ptr in exception handling
763
764fvisibility-inlines-hidden
765C++ ObjC++
766Marks all inlined methods as having hidden visibility
767
768fvisibility-ms-compat
769C++ ObjC++ Var(flag_visibility_ms_compat)
770Changes visibility to match Microsoft Visual Studio by default
771
772fvtable-gc
773C++ ObjC++
774Discard unused virtual functions
775
776fvtable-thunks
777C++ ObjC++
778Implement vtables using thunks
779
780fweak
781C++ ObjC++
782Emit common-like symbols as weak symbols
783
784fwide-exec-charset=
785C ObjC C++ ObjC++ Joined RejectNegative
786-fwide-exec-charset=<cset>	Convert all wide strings and character constants to character set <cset>
787
788fworking-directory
789C ObjC C++ ObjC++
790Generate a #line directive pointing at the current working directory
791
792fxref
793C++ ObjC++
794Emit cross referencing information
795
796fzero-link
797ObjC ObjC++
798Generate lazy class lookup (via objc_getClass()) for use in Zero-Link mode
799
800gen-decls
801ObjC ObjC++
802Dump declarations to a .decl file
803
804femit-struct-debug-baseonly
805C ObjC C++ ObjC++
806-femit-struct-debug-baseonly	Aggressive reduced debug info for structs
807
808femit-struct-debug-reduced
809C ObjC C++ ObjC++
810-femit-struct-debug-reduced	Conservative reduced debug info for structs
811
812femit-struct-debug-detailed=
813C ObjC C++ ObjC++ Joined
814-femit-struct-debug-detailed=<spec-list>	Detailed reduced debug info for structs
815
816idirafter
817C ObjC C++ ObjC++ Joined Separate
818-idirafter <dir>	Add <dir> to the end of the system include path
819
820imacros
821C ObjC C++ ObjC++ Joined Separate
822-imacros <file>	Accept definition of macros in <file>
823
824imultilib
825C ObjC C++ ObjC++ Joined Separate
826-imultilib <dir> Set <dir> to be the multilib include subdirectory
827
828include
829C ObjC C++ ObjC++ Joined Separate
830-include <file>	Include the contents of <file> before other files
831
832iprefix
833C ObjC C++ ObjC++ Joined Separate
834-iprefix <path>	Specify <path> as a prefix for next two options
835
836isysroot
837C ObjC C++ ObjC++ Joined Separate
838-isysroot <dir>	Set <dir> to be the system root directory
839
840isystem
841C ObjC C++ ObjC++ Joined Separate
842-isystem <dir>	Add <dir> to the start of the system include path
843
844iquote
845C ObjC C++ ObjC++ Joined Separate
846-iquote <dir>	Add <dir> to the end of the quote include path
847
848iwithprefix
849C ObjC C++ ObjC++ Joined Separate
850-iwithprefix <dir>	Add <dir> to the end of the system include path
851
852iwithprefixbefore
853C ObjC C++ ObjC++ Joined Separate
854-iwithprefixbefore <dir>	Add <dir> to the end of the main include path
855
856lang-asm
857C Undocumented
858
859lang-fortran
860C Undocumented
861
862lang-objc
863C ObjC C++ ObjC++ Undocumented
864
865nostdinc
866C ObjC C++ ObjC++
867Do not search standard system include directories (those specified with -isystem will still be used)
868
869nostdinc++
870C++ ObjC++
871Do not search standard system include directories for C++
872
873o
874C ObjC C++ ObjC++ Joined Separate
875; Documented in common.opt
876
877pedantic
878C ObjC C++ ObjC++
879; Documented in common.opt
880
881pedantic-errors
882C ObjC C++ ObjC++
883; Documented in common.opt
884
885print-objc-runtime-info
886ObjC ObjC++
887Generate C header of platform-specific features
888
889print-pch-checksum
890C ObjC C++ ObjC++
891Print a checksum of the executable for PCH validity checking, and stop
892
893remap
894C ObjC C++ ObjC++
895Remap file names when including files
896
897std=c++98
898C++ ObjC++
899Conform to the ISO 1998 C++ standard
900
901std=c89
902C ObjC
903Conform to the ISO 1990 C standard
904
905std=c99
906C ObjC
907Conform to the ISO 1999 C standard
908
909std=c9x
910C ObjC
911Deprecated in favor of -std=c99
912
913std=gnu++98
914C++ ObjC++
915Conform to the ISO 1998 C++ standard with GNU extensions
916
917std=gnu89
918C ObjC
919Conform to the ISO 1990 C standard with GNU extensions
920
921std=gnu99
922C ObjC
923Conform to the ISO 1999 C standard with GNU extensions
924
925std=gnu9x
926C ObjC
927Deprecated in favor of -std=gnu99
928
929std=iso9899:1990
930C ObjC
931Conform to the ISO 1990 C standard
932
933std=iso9899:199409
934C ObjC
935Conform to the ISO 1990 C standard as amended in 1994
936
937std=iso9899:1999
938C ObjC
939Conform to the ISO 1999 C standard
940
941std=iso9899:199x
942C ObjC
943Deprecated in favor of -std=iso9899:1999
944
945traditional-cpp
946C ObjC C++ ObjC++
947Enable traditional preprocessing
948
949trigraphs
950C ObjC C++ ObjC++
951-trigraphs	Support ISO C trigraphs
952
953undef
954C ObjC C++ ObjC++
955Do not predefine system-specific and GCC-specific macros
956
957v
958C ObjC C++ ObjC++
959Enable verbose output
960
961w
962C ObjC C++ ObjC++
963; Documented in common.opt
964
965; This comment is to ensure we retain the blank line above.
966