c.opt revision 259890
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 259890 2013-12-25 21:59:56Z 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 287Wmultichar 288C ObjC C++ ObjC++ 289Warn about use of multi-character character constants 290 291Wnested-externs 292C ObjC Var(warn_nested_externs) 293Warn about \"extern\" declarations not at file scope 294 295; APPLE LOCAL begin -Wnewline-eof 296Wnewline-eof 297C ObjC C++ ObjC++ 298Warn about files missing a newline at the end of the file 299; APPLE LOCAL end -Wnewline-eof 300 301Wnon-template-friend 302C++ ObjC++ Var(warn_nontemplate_friend) Init(1) 303Warn when non-templatized friend functions are declared within a template 304 305Wnon-virtual-dtor 306C++ ObjC++ Var(warn_nonvdtor) 307Warn about non-virtual destructors 308 309Wnonnull 310C ObjC Var(warn_nonnull) 311Warn about NULL being passed to argument slots marked as requiring non-NULL 312 313Wnormalized= 314C ObjC C++ ObjC++ Joined 315-Wnormalized=<id|nfc|nfkc> Warn about non-normalised Unicode strings 316 317Wold-style-cast 318C++ ObjC++ Var(warn_old_style_cast) 319Warn if a C-style cast is used in a program 320 321Wold-style-definition 322C ObjC Var(warn_old_style_definition) 323Warn if an old-style parameter definition is used 324 325Woverlength-strings 326C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1) 327Warn if a string is longer than the maximum portable length specified by the standard 328 329Woverloaded-virtual 330C++ ObjC++ Var(warn_overloaded_virtual) 331Warn about overloaded virtual function names 332 333Woverride-init 334C ObjC Var(warn_override_init) Init(-1) 335Warn about overriding initializers without side effects 336 337Wparentheses 338C ObjC C++ ObjC++ Var(warn_parentheses) 339Warn about possibly missing parentheses 340 341Wpmf-conversions 342C++ ObjC++ Var(warn_pmf2ptr) Init(1) 343Warn when converting the type of pointers to member functions 344 345Wpointer-arith 346C ObjC C++ ObjC++ Var(warn_pointer_arith) 347Warn about function pointer arithmetic 348 349Wpointer-to-int-cast 350C ObjC Var(warn_pointer_to_int_cast) Init(1) 351Warn when a pointer is cast to an integer of a different size 352 353Wpragmas 354C ObjC C++ ObjC++ Var(warn_pragmas) Init(1) 355Warn about misuses of pragmas 356 357Wprotocol 358ObjC ObjC++ Var(warn_protocol) Init(1) 359Warn if inherited methods are unimplemented 360 361Wredundant-decls 362C ObjC C++ ObjC++ Var(warn_redundant_decls) 363Warn about multiple declarations of the same object 364 365Wreorder 366C++ ObjC++ Var(warn_reorder) 367Warn when the compiler reorders code 368 369Wreturn-type 370C ObjC C++ ObjC++ Var(warn_return_type) 371Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++) 372 373Wselector 374ObjC ObjC++ Var(warn_selector) 375Warn if a selector has multiple methods 376 377Wsequence-point 378C ObjC C++ ObjC++ Var(warn_sequence_point) 379Warn about possible violations of sequence point rules 380 381Wsign-compare 382C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1) 383Warn about signed-unsigned comparisons 384 385Wsign-promo 386C++ ObjC++ Var(warn_sign_promo) 387Warn when overload promotes from unsigned to signed 388 389Wstrict-null-sentinel 390C++ ObjC++ 391Warn about uncasted NULL used as sentinel 392 393Wstrict-prototypes 394C ObjC Var(warn_strict_prototypes) 395Warn about unprototyped function declarations 396 397Wstrict-selector-match 398ObjC ObjC++ Var(warn_strict_selector_match) 399Warn if type signatures of candidate methods do not match exactly 400 401Wsynth 402C++ ObjC++ Var(warn_synth) 403Warn when synthesis behavior differs from Cfront 404 405Wsystem-headers 406C ObjC C++ ObjC++ 407Do not suppress warnings from system headers 408 409Wtraditional 410C ObjC Var(warn_traditional) 411Warn about features not present in traditional C 412 413Wtrampolines 414Common Var(warn_trampolines) 415Warn when trampolines are emitted 416 417Wtrigraphs 418C ObjC C++ ObjC++ 419Warn if trigraphs are encountered that might affect the meaning of the program 420 421Wundeclared-selector 422ObjC ObjC++ Var(warn_undeclared_selector) 423Warn about @selector()s without previously declared methods 424 425Wundef 426C ObjC C++ ObjC++ 427Warn if an undefined macro is used in an #if directive 428 429Wunknown-pragmas 430C ObjC C++ ObjC++ 431Warn about unrecognized pragmas 432 433Wunused-macros 434C ObjC C++ ObjC++ 435Warn about macros defined in the main file that are not used 436 437Wvariadic-macros 438C ObjC C++ ObjC++ 439Do not warn about using variadic macros when -pedantic 440 441Wvla 442C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning 443Warn if a variable length array is used 444 445Wwrite-strings 446C ObjC C++ ObjC++ Var(warn_write_strings) 447In 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. 448 449Wpointer-sign 450C ObjC Var(warn_pointer_sign) Init(-1) 451Warn when a pointer differs in signedness in an assignment 452 453ansi 454C ObjC C++ ObjC++ 455A synonym for -std=c89 (for C) or -std=c++98 (for C++) 456 457d 458C ObjC C++ ObjC++ Joined 459; Documented in common.opt. FIXME - what about -dI, -dD, -dN and -dD? 460 461faccess-control 462C++ ObjC++ 463Enforce class member access control semantics 464 465fall-virtual 466C++ ObjC++ 467 468falt-external-templates 469C++ ObjC++ 470Change when template instances are emitted 471 472fasm 473C ObjC C++ ObjC++ 474Recognize the \"asm\" keyword 475 476fbuiltin 477C ObjC C++ ObjC++ 478Recognize built-in functions 479 480fbuiltin- 481C ObjC C++ ObjC++ Joined 482 483fcheck-new 484C++ ObjC++ 485Check the return value of new 486 487fcond-mismatch 488C ObjC C++ ObjC++ 489Allow the arguments of the '?' operator to have different types 490 491fconserve-space 492C++ ObjC++ 493Reduce the size of object files 494 495fconstant-string-class= 496ObjC ObjC++ Joined 497-fconst-string-class=<name> Use class <name> for constant strings 498 499fdefault-inline 500C++ ObjC++ 501Inline member functions by default 502 503fdirectives-only 504C ObjC C++ ObjC++ 505Preprocess directives only. 506 507fdollars-in-identifiers 508C ObjC C++ ObjC++ 509Permit '$' as an identifier character 510 511felide-constructors 512C++ ObjC++ 513 514fenforce-eh-specs 515C++ ObjC++ 516Generate code to check exception specifications 517 518fenum-int-equiv 519C++ ObjC++ 520 521fexec-charset= 522C ObjC C++ ObjC++ Joined RejectNegative 523-fexec-charset=<cset> Convert all strings and character constants to character set <cset> 524 525fextended-identifiers 526C ObjC C++ ObjC++ 527Permit universal character names (\\u and \\U) in identifiers 528 529finput-charset= 530C ObjC C++ ObjC++ Joined RejectNegative 531-finput-charset=<cset> Specify the default character set for source files 532 533 534fexternal-templates 535C++ ObjC++ 536 537ffor-scope 538C++ ObjC++ 539Scope of for-init-statement variables is local to the loop 540 541ffreestanding 542C ObjC 543Do not assume that standard C libraries and \"main\" exist 544 545fgnu-keywords 546C++ ObjC++ 547Recognize GNU-defined keywords 548 549fgnu-runtime 550ObjC ObjC++ 551Generate code for GNU runtime environment 552 553fgnu89-inline 554C ObjC Var(flag_gnu89_inline) Init(-1) 555Use traditional GNU semantics for inline functions 556 557fguiding-decls 558C++ ObjC++ 559 560fhandle-exceptions 561C++ ObjC++ 562 563fhonor-std 564C++ ObjC++ 565 566fhosted 567C ObjC 568Assume normal C execution environment 569 570fhuge-objects 571C++ ObjC++ 572Enable support for huge objects 573 574fimplement-inlines 575C++ ObjC++ 576Export functions even if they can be inlined 577 578fimplicit-inline-templates 579C++ ObjC++ 580Emit implicit instantiations of inline templates 581 582fimplicit-templates 583C++ ObjC++ 584Emit implicit instantiations of templates 585 586ffriend-injection 587C++ ObjC++ Var(flag_friend_injection) 588Inject friend functions into enclosing namespace 589 590flabels-ok 591C++ ObjC++ 592 593fms-extensions 594C ObjC C++ ObjC++ 595Don't warn about uses of Microsoft extensions 596 597fname-mangling-version- 598C++ ObjC++ Joined 599 600fnew-abi 601C++ ObjC++ 602 603fnext-runtime 604ObjC ObjC++ 605Generate code for NeXT (Apple Mac OS X) runtime environment 606 607fnil-receivers 608ObjC ObjC++ 609Assume that receivers of Objective-C messages may be nil 610 611fnonansi-builtins 612C++ ObjC++ 613 614fnonnull-objects 615C++ ObjC++ 616 617; Generate special '- .cxx_construct' and '- .cxx_destruct' methods 618; to initialize any non-POD ivars in Objective-C++ classes. 619fobjc-call-cxx-cdtors 620ObjC++ Var(flag_objc_call_cxx_cdtors) 621Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed 622 623fobjc-direct-dispatch 624ObjC ObjC++ Var(flag_objc_direct_dispatch) 625Allow fast jumps to the message dispatcher 626 627; Nonzero means that we will allow new ObjC exception syntax (@throw, 628; @try, etc.) in source code. 629fobjc-exceptions 630ObjC ObjC++ Var(flag_objc_exceptions) 631Enable Objective-C exception and synchronization syntax 632 633fobjc-gc 634ObjC ObjC++ Var(flag_objc_gc) 635Enable garbage collection (GC) in Objective-C/Objective-C++ programs 636 637; Nonzero means that we generate NeXT setjmp based exceptions. 638fobjc-sjlj-exceptions 639ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1) 640Enable Objective-C setjmp exception handling runtime 641 642fopenmp 643C ObjC C++ ObjC++ Var(flag_openmp) 644Enable OpenMP 645 646foperator-names 647C++ ObjC++ 648Recognize C++ kewords like \"compl\" and \"xor\" 649 650foptional-diags 651C++ ObjC++ 652Enable optional diagnostics 653 654fpch-deps 655C ObjC C++ ObjC++ 656 657fpch-preprocess 658C ObjC C++ ObjC++ 659Look for and use PCH files even when preprocessing 660 661fpermissive 662C++ ObjC++ 663Downgrade conformance errors to warnings 664 665fpreprocessed 666C ObjC C++ ObjC++ 667Treat the input file as already preprocessed 668 669freplace-objc-classes 670ObjC ObjC++ 671Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime 672 673frepo 674C++ ObjC++ 675Enable automatic template instantiation 676 677frtti 678C++ ObjC++ 679Generate run time type descriptor information 680 681fshort-double 682C ObjC C++ ObjC++ 683Use the same size for double as for float 684 685fshort-enums 686C ObjC C++ ObjC++ 687Use the narrowest integer type possible for enumeration types 688 689fshort-wchar 690C ObjC C++ ObjC++ 691Force the underlying type for \"wchar_t\" to be \"unsigned short\" 692 693fsigned-bitfields 694C ObjC C++ ObjC++ 695When \"signed\" or \"unsigned\" is not given make the bitfield signed 696 697fsigned-char 698C ObjC C++ ObjC++ 699Make \"char\" signed by default 700 701fsquangle 702C++ ObjC++ 703 704fstats 705C++ ObjC++ 706Display statistics accumulated during compilation 707 708fstrict-prototype 709C++ ObjC++ 710 711ftabstop= 712C ObjC C++ ObjC++ Joined RejectNegative UInteger 713-ftabstop=<number> Distance between tab stops for column reporting 714 715ftemplate-depth- 716C++ ObjC++ Joined RejectNegative UInteger 717-ftemplate-depth-<number> Specify maximum template instantiation depth 718 719fthis-is-variable 720C++ ObjC++ 721 722fthreadsafe-statics 723C++ ObjC++ 724-fno-threadsafe-statics Do not generate thread-safe code for initializing local statics 725 726funsigned-bitfields 727C ObjC C++ ObjC++ 728When \"signed\" or \"unsigned\" is not given make the bitfield unsigned 729 730funsigned-char 731C ObjC C++ ObjC++ 732Make \"char\" unsigned by default 733 734fuse-cxa-atexit 735C++ ObjC++ 736Use __cxa_atexit to register destructors 737 738fuse-cxa-get-exception-ptr 739C++ ObjC++ 740Use __cxa_get_exception_ptr in exception handling 741 742fvisibility-inlines-hidden 743C++ ObjC++ 744Marks all inlined methods as having hidden visibility 745 746fvtable-gc 747C++ ObjC++ 748Discard unused virtual functions 749 750fvtable-thunks 751C++ ObjC++ 752Implement vtables using thunks 753 754fweak 755C++ ObjC++ 756Emit common-like symbols as weak symbols 757 758fwide-exec-charset= 759C ObjC C++ ObjC++ Joined RejectNegative 760-fwide-exec-charset=<cset> Convert all wide strings and character constants to character set <cset> 761 762fworking-directory 763C ObjC C++ ObjC++ 764Generate a #line directive pointing at the current working directory 765 766fxref 767C++ ObjC++ 768Emit cross referencing information 769 770fzero-link 771ObjC ObjC++ 772Generate lazy class lookup (via objc_getClass()) for use in Zero-Link mode 773 774gen-decls 775ObjC ObjC++ 776Dump declarations to a .decl file 777 778femit-struct-debug-baseonly 779C ObjC C++ ObjC++ 780-femit-struct-debug-baseonly Aggressive reduced debug info for structs 781 782femit-struct-debug-reduced 783C ObjC C++ ObjC++ 784-femit-struct-debug-reduced Conservative reduced debug info for structs 785 786femit-struct-debug-detailed= 787C ObjC C++ ObjC++ Joined 788-femit-struct-debug-detailed=<spec-list> Detailed reduced debug info for structs 789 790idirafter 791C ObjC C++ ObjC++ Joined Separate 792-idirafter <dir> Add <dir> to the end of the system include path 793 794imacros 795C ObjC C++ ObjC++ Joined Separate 796-imacros <file> Accept definition of macros in <file> 797 798imultilib 799C ObjC C++ ObjC++ Joined Separate 800-imultilib <dir> Set <dir> to be the multilib include subdirectory 801 802include 803C ObjC C++ ObjC++ Joined Separate 804-include <file> Include the contents of <file> before other files 805 806iprefix 807C ObjC C++ ObjC++ Joined Separate 808-iprefix <path> Specify <path> as a prefix for next two options 809 810isysroot 811C ObjC C++ ObjC++ Joined Separate 812-isysroot <dir> Set <dir> to be the system root directory 813 814isystem 815C ObjC C++ ObjC++ Joined Separate 816-isystem <dir> Add <dir> to the start of the system include path 817 818iquote 819C ObjC C++ ObjC++ Joined Separate 820-iquote <dir> Add <dir> to the end of the quote include path 821 822iwithprefix 823C ObjC C++ ObjC++ Joined Separate 824-iwithprefix <dir> Add <dir> to the end of the system include path 825 826iwithprefixbefore 827C ObjC C++ ObjC++ Joined Separate 828-iwithprefixbefore <dir> Add <dir> to the end of the main include path 829 830lang-asm 831C Undocumented 832 833lang-fortran 834C Undocumented 835 836lang-objc 837C ObjC C++ ObjC++ Undocumented 838 839nostdinc 840C ObjC C++ ObjC++ 841Do not search standard system include directories (those specified with -isystem will still be used) 842 843nostdinc++ 844C++ ObjC++ 845Do not search standard system include directories for C++ 846 847o 848C ObjC C++ ObjC++ Joined Separate 849; Documented in common.opt 850 851pedantic 852C ObjC C++ ObjC++ 853; Documented in common.opt 854 855pedantic-errors 856C ObjC C++ ObjC++ 857; Documented in common.opt 858 859print-objc-runtime-info 860ObjC ObjC++ 861Generate C header of platform-specific features 862 863print-pch-checksum 864C ObjC C++ ObjC++ 865Print a checksum of the executable for PCH validity checking, and stop 866 867remap 868C ObjC C++ ObjC++ 869Remap file names when including files 870 871std=c++98 872C++ ObjC++ 873Conform to the ISO 1998 C++ standard 874 875std=c89 876C ObjC 877Conform to the ISO 1990 C standard 878 879std=c99 880C ObjC 881Conform to the ISO 1999 C standard 882 883std=c9x 884C ObjC 885Deprecated in favor of -std=c99 886 887std=gnu++98 888C++ ObjC++ 889Conform to the ISO 1998 C++ standard with GNU extensions 890 891std=gnu89 892C ObjC 893Conform to the ISO 1990 C standard with GNU extensions 894 895std=gnu99 896C ObjC 897Conform to the ISO 1999 C standard with GNU extensions 898 899std=gnu9x 900C ObjC 901Deprecated in favor of -std=gnu99 902 903std=iso9899:1990 904C ObjC 905Conform to the ISO 1990 C standard 906 907std=iso9899:199409 908C ObjC 909Conform to the ISO 1990 C standard as amended in 1994 910 911std=iso9899:1999 912C ObjC 913Conform to the ISO 1999 C standard 914 915std=iso9899:199x 916C ObjC 917Deprecated in favor of -std=iso9899:1999 918 919traditional-cpp 920C ObjC C++ ObjC++ 921Enable traditional preprocessing 922 923trigraphs 924C ObjC C++ ObjC++ 925-trigraphs Support ISO C trigraphs 926 927undef 928C ObjC C++ ObjC++ 929Do not predefine system-specific and GCC-specific macros 930 931v 932C ObjC C++ ObjC++ 933Enable verbose output 934 935w 936C ObjC C++ ObjC++ 937; Documented in common.opt 938 939; This comment is to ensure we retain the blank line above. 940