; Options for the C, ObjC, C++ and ObjC++ front ends. ; Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. ; ; This file is part of GCC. ; ; GCC is free software; you can redistribute it and/or modify it under ; the terms of the GNU General Public License as published by the Free ; Software Foundation; either version 2, or (at your option) any later ; version. ; ; GCC is distributed in the hope that it will be useful, but WITHOUT 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 ; along with GCC; see the file COPYING. If not, write to the Free ; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA ; 02110-1301, USA. ; See the GCC internals manual for a description of this file's format. ; Please try to keep this file in ASCII collating order. Language C Language ObjC Language C++ Language ObjC++ -output-pch= C ObjC C++ ObjC++ Joined Separate A C ObjC C++ ObjC++ Joined Separate -A<question>=<answer> Assert the <answer> to <question>. Putting '-' before <question> disables the <answer> to <question> C C ObjC C++ ObjC++ Do not discard comments CC C ObjC C++ ObjC++ Do not discard comments in macro expansions D C ObjC C++ ObjC++ Joined Separate -D<macro>[=<val>] Define a <macro> with <val> as its value. If just <macro> is given, <val> is taken to be 1 E C ObjC C++ ObjC++ Undocumented F C ObjC C++ ObjC++ Joined Separate -F <dir> Add <dir> to the end of the main framework include path H C ObjC C++ ObjC++ Print the name of header files as they are used I C ObjC C++ ObjC++ Joined Separate -I <dir> Add <dir> to the end of the main include path M C ObjC C++ ObjC++ Generate make dependencies MD C ObjC C++ ObjC++ Separate Generate make dependencies and compile MF C ObjC C++ ObjC++ Joined Separate -MF <file> Write dependency output to the given file MG C ObjC C++ ObjC++ Treat missing header files as generated files MM C ObjC C++ ObjC++ Like -M but ignore system header files MMD C ObjC C++ ObjC++ Separate Like -MD but ignore system header files MP C ObjC C++ ObjC++ Generate phony targets for all headers MQ C ObjC C++ ObjC++ Joined Separate -MQ <target> Add a MAKE-quoted target MT C ObjC C++ ObjC++ Joined Separate -MT <target> Add an unquoted target P C ObjC C++ ObjC++ Do not generate #line directives U C ObjC C++ ObjC++ Joined Separate -U<macro> Undefine <macro> ; APPLE LOCAL begin -Wno-#warnings W#warnings C ObjC C++ ObjC++ Enable #warning ; APPLE LOCAL end -Wno-#warnings Wabi C++ ObjC++ Var(warn_abi) Warn about things that will change when compiling with an ABI-compliant compiler Waddress C ObjC C++ ObjC++ Var(warn_address) Warn about suspicious uses of memory addresses Wall C ObjC C++ ObjC++ Enable most warning messages Wassign-intercept ObjC ObjC++ Var(warn_assign_intercept) Warn whenever an Objective-C assignment is being intercepted by the garbage collector Wbad-function-cast C ObjC Var(warn_bad_function_cast) Warn about casting functions to incompatible types Wc++-compat C ObjC Var(warn_cxx_compat) Warn about C constructs that are not in the common subset of C and C++ Wcast-qual C ObjC C++ ObjC++ Var(warn_cast_qual) Warn about casts which discard qualifiers Wchar-subscripts C ObjC C++ ObjC++ Var(warn_char_subscripts) Warn about subscripts whose type is \"char\" Wcomment C ObjC C++ ObjC++ Warn about possibly nested block comments, and C++ comments spanning more than one physical line Wcomments C ObjC C++ ObjC++ Synonym for -Wcomment Wconversion C ObjC C++ ObjC++ Var(warn_conversion) Warn about possibly confusing type conversions ; APPLE LOCAL begin mainline ; This is superseded in mainline by Wconversion Wshorten-64-to-32 C ObjC C++ ObjC++ Var(warn_shorten_64_to_32) Warn if a value is implicitly converted from a 64 bit type to a 32 bit type ; APPLE LOCAL end mainline Wctor-dtor-privacy C++ ObjC++ Var(warn_ctor_dtor_privacy) Warn when all constructors and destructors are private Wdeclaration-after-statement C ObjC Var(warn_declaration_after_statement) Warn when a declaration is found after a statement Wdeprecated C++ ObjC++ Var(warn_deprecated) Init(1) Warn about deprecated compiler features ; APPLE LOCAL begin -Wdiscard-qual 4086969 Wdiscard-qual C ObjC Var(warn_discard_qual) Init(1) Warn about discarded qualifiers ; APPLE LOCAL end -Wdiscard-qual 4086969 Wdiv-by-zero C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warn about compile-time integer division by zero Weffc++ C++ ObjC++ Var(warn_ecpp) Warn about violations of Effective C++ style rules ; APPLE LOCAL begin mainline Wempty-body C ObjC C++ ObjC++ Var(warn_empty_body) Init(-1) Warning Warn about an empty body in an if or else statement ; APPLE LOCAL end mainline Wendif-labels C ObjC C++ ObjC++ Warn about stray tokens after #elif and #endif Werror C ObjC C++ ObjC++ ; Documented in common.opt Werror-implicit-function-declaration C ObjC RejectNegative Make implicit function declarations an error ; APPLE LOCAL begin -Wextra-tokens Wextra-tokens C ObjC C++ ObjC++ Warn about extra tokens at the end of prepreprocessor directives ; APPLE LOCAL end -Wextra-tokens Wfloat-equal C ObjC C++ ObjC++ Var(warn_float_equal) Warn if testing floating point numbers for equality Wformat C ObjC C++ ObjC++ Warn about printf/scanf/strftime/strfmon format string anomalies Wformat-extra-args C ObjC C++ ObjC++ Var(warn_format_extra_args) Warn if passing too many arguments to a function for its format string Wformat-nonliteral C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warn about format strings that are not literals ; APPLE LOCAL begin default to Wformat-security 5764921 ; LLVM LOCAL begin don't initialize this Wformat-security C ObjC C++ ObjC++ Warn about possible security problems with format functions ; LLVM LOCAL end don't initialize this ; APPLE LOCAL end default to Wformat-security 5764921 Wformat-y2k C ObjC C++ ObjC++ Var(warn_format_y2k) Warn about strftime formats yielding 2-digit years ; LLVM LOCAL begin enable for C++ Wformat-zero-length C ObjC C++ ObjC++ Var(warn_format_zero_length) Warn about zero-length formats ; LLVM LOCAL end enable for C++ Wformat= C ObjC C++ ObjC++ Joined ; APPLE LOCAL begin -Wfour-char-constants Wfour-char-constants C ObjC C++ ObjC++ Warn about multicharacter constants containing exactly four characters ; APPLE LOCAL end -Wfour-char-constants ; APPLE LOCAL begin Wglobal-constructors 6324584 Wglobal-constructors C ObjC C++ ObjC++ Var(warn_global_constructors) Warn when global (namespace scope) objects require runtime construction or destruction or when functions that use attribute constructor or destructor are used. This is useful to help maintain fast program startup and end times. ; APPLE LOCAL end Wglobal-constructors 6324584 Winit-self C ObjC C++ ObjC++ Var(warn_init_self) Warn about variables which are initialized to themselves Wimplicit C ObjC C++ ObjC++ Wimplicit-function-declaration C ObjC Var(mesg_implicit_function_declaration) Init(-1) Warn about implicit function declarations Wimplicit-int C ObjC Var(warn_implicit_int) Warn when a declaration does not specify a type Wimport C ObjC C++ ObjC++ Deprecated. This switch has no effect Wint-to-pointer-cast C ObjC Var(warn_int_to_pointer_cast) Init(1) Warn when there is a cast to a pointer from an integer of a different size Winvalid-offsetof C++ ObjC++ Var(warn_invalid_offsetof) Init(1) Warn about invalid uses of the \"offsetof\" macro Winvalid-pch C ObjC C++ ObjC++ Warn about PCH files that are found but not used Wlong-long C ObjC C++ ObjC++ Var(warn_long_long) Init(1) Do not warn about using \"long long\" when -pedantic Wmain C ObjC Warn about suspicious declarations of \"main\" Wmissing-braces C ObjC C++ ObjC++ Var(warn_missing_braces) Warn about possibly missing braces around initializers Wmissing-declarations C ObjC Var(warn_missing_declarations) Warn about global functions without previous declarations Wmissing-field-initializers C ObjC C++ ObjC++ Var(warn_missing_field_initializers) Init(-1) Warn about missing fields in struct initializers Wmissing-format-attribute C ObjC C++ ObjC++ Var(warn_missing_format_attribute) Warn about functions which might be candidates for format attributes Wmissing-include-dirs C ObjC C++ ObjC++ Warn about user-specified include directories that do not exist ; APPLE LOCAL begin warn missing prototype 6261539 Wmissing-prototypes C ObjC C++ ObjC++ Var(warn_missing_prototypes) Warn about global functions without prototypes ; APPLE LOCAL end warn missing prototype 6261539 ; APPLE LOCAL begin -Wmost Wmost C ObjC C++ ObjC++ Like -Wall but without -Wparentheses ; APPLE LOCAL end -Wmost Wmultichar C ObjC C++ ObjC++ Warn about use of multi-character character constants Wnested-externs C ObjC Var(warn_nested_externs) Warn about \"extern\" declarations not at file scope ; APPLE LOCAL begin -Wnewline-eof Wnewline-eof C ObjC C++ ObjC++ Warn about files missing a newline at the end of the file ; APPLE LOCAL end -Wnewline-eof ; APPLE LOCAL begin non lvalue assign Wnon-lvalue-assign C ObjC C++ ObjC++ Var(warn_non_lvalue_assign) Init(1) Warn about assignment to casts and conditional expressions of lvalues ; APPLE LOCAL end non lvalue assign ; APPLE LOCAL begin radar 5376125 Wdirect-ivar-access ObjC ObjC++ Var(warn_direct_ivar_access) Warn about direct access to gc-enabled ivars ; APPLE LOCAL end radar 5376125 Wnon-template-friend C++ ObjC++ Var(warn_nontemplate_friend) Init(1) Warn when non-templatized friend functions are declared within a template Wnon-virtual-dtor C++ ObjC++ Var(warn_nonvdtor) Warn about non-virtual destructors ; APPLE LOCAL begin turn on for C++/Objective-C++ Wnonnull C ObjC C++ ObjC++ Var(warn_nonnull) Warn about NULL being passed to argument slots marked as requiring non-NULL ; APPLE LOCAL end turn on for C++/Objective-C++ Wnormalized= C ObjC C++ ObjC++ Joined -Wnormalized=<id|nfc|nfkc> Warn about non-normalised Unicode strings Wold-style-cast C++ ObjC++ Var(warn_old_style_cast) Warn if a C-style cast is used in a program Wold-style-definition C ObjC Var(warn_old_style_definition) Warn if an old-style parameter definition is used Woverlength-strings C ObjC C++ ObjC++ Var(warn_overlength_strings) Init(-1) Warn if a string is longer than the maximum portable length specified by the standard Woverloaded-virtual C++ ObjC++ Var(warn_overloaded_virtual) Warn about overloaded virtual function names Woverride-init C ObjC Var(warn_override_init) Init(-1) Warn about overriding initializers without side effects Wparentheses C ObjC C++ ObjC++ Var(warn_parentheses) Warn about possibly missing parentheses Wpmf-conversions C++ ObjC++ Var(warn_pmf2ptr) Init(1) Warn when converting the type of pointers to member functions Wpointer-arith C ObjC C++ ObjC++ Var(warn_pointer_arith) Warn about function pointer arithmetic Wpointer-to-int-cast C ObjC Var(warn_pointer_to_int_cast) Init(1) Warn when a pointer is cast to an integer of a different size Wpragmas C ObjC C++ ObjC++ Var(warn_pragmas) Init(1) Warn about misuses of pragmas Wprotocol ObjC ObjC++ Var(warn_protocol) Init(1) Warn if inherited methods are unimplemented ; APPLE LOCAL begin radar 5172645 Wproperty-assign-default ObjC ObjC++ Var(warn_property_assign_default) Init(1) Warn if no attribute specified on property of pointer to object type (defaulted to assign) ; APPLE LOCAL end radar 5172645 Wredundant-decls C ObjC C++ ObjC++ Var(warn_redundant_decls) Warn about multiple declarations of the same object Wreorder C++ ObjC++ Var(warn_reorder) Warn when the compiler reorders code Wreturn-type C ObjC C++ ObjC++ Var(warn_return_type) Warn whenever a function's return type defaults to \"int\" (C), or about inconsistent return types (C++) Wselector ObjC ObjC++ Var(warn_selector) Warn if a selector has multiple methods Wsequence-point C ObjC C++ ObjC++ Var(warn_sequence_point) Warn about possible violations of sequence point rules Wsign-compare C ObjC C++ ObjC++ Var(warn_sign_compare) Init(-1) Warn about signed-unsigned comparisons Wsign-promo C++ ObjC++ Var(warn_sign_promo) Warn when overload promotes from unsigned to signed Wstrict-null-sentinel C++ ObjC++ Warn about uncasted NULL used as sentinel Wstrict-prototypes C ObjC Var(warn_strict_prototypes) Warn about unprototyped function declarations Wstrict-selector-match ObjC ObjC++ Var(warn_strict_selector_match) Warn if type signatures of candidate methods do not match exactly Wsynth C++ ObjC++ Var(warn_synth) Warn when synthesis behavior differs from Cfront Wsystem-headers C ObjC C++ ObjC++ Do not suppress warnings from system headers Wtraditional C ObjC Var(warn_traditional) Warn about features not present in traditional C Wtrigraphs C ObjC C++ ObjC++ Warn if trigraphs are encountered that might affect the meaning of the program Wundeclared-selector ObjC ObjC++ Var(warn_undeclared_selector) Warn about @selector()s without previously declared methods Wundef C ObjC C++ ObjC++ Warn if an undefined macro is used in an #if directive Wunknown-pragmas C ObjC C++ ObjC++ Warn about unrecognized pragmas Wunused-macros C ObjC C++ ObjC++ Warn about macros defined in the main file that are not used Wvariadic-macros C ObjC C++ ObjC++ Do not warn about using variadic macros when -pedantic Wwrite-strings C ObjC C++ ObjC++ Var(warn_write_strings) In 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. Wpointer-sign C ObjC Var(warn_pointer_sign) Init(-1) Warn when a pointer differs in signedness in an assignment ansi C ObjC C++ ObjC++ A synonym for -std=c89 (for C) or -std=c++98 (for C++) d C ObjC C++ ObjC++ Joined ; Documented in common.opt. FIXME - what about -dI, -dD, -dN and -dD? faccess-control C++ ObjC++ Enforce class member access control semantics fall-virtual C++ ObjC++ falt-external-templates C++ ObjC++ Change when template instances are emitted ; APPLE LOCAL begin Altivec 3837840 faltivec C ObjC C++ ObjC++ Var(flag_faltivec) Enable Altivec ; APPLE LOCAL end Altivec 3837840 fasm C ObjC C++ ObjC++ Recognize the \"asm\" keyword ; APPLE LOCAL begin CW asm blocks fasm-blocks C ObjC C++ ObjC++ Handle CW-style assembly blocks fms-asms C ObjC C++ ObjC++ Var(flag_ms_asms) When handling assembly blocks, use MW-style assembly blocks ; APPLE LOCAL end CW asm blocks ; APPLE LOCAL begin -fast or -fastf or -fastcp fast C ObjC C++ ObjC++ Used for c or c++ optimization fastcp C++ ObjC++ Used when C++ specific optimization is needed fastf C ObjC Used when c is generated from NAG fortran ; APPLE LOCAL end -fast or -fastf or -fastcp fbuiltin C ObjC C++ ObjC++ Recognize built-in functions fbuiltin- C ObjC C++ ObjC++ Joined fcheck-new C++ ObjC++ Check the return value of new ; APPLE LOCAL begin ARM structor thunks ; Nonzero if we prefer to clone con/de/structors. Alternative is to ; gen multiple tiny thunk-esque things that call/jump to a unified ; con/de/structor. This is a classic size/speed tradeoff. fclone-structors C++ ObjC++ Var(flag_clone_structors) Factor out certain duplicate code in constructors and destructors ; APPLE LOCAL end ARM structor thunks fcond-mismatch C ObjC C++ ObjC++ Allow the arguments of the '?' operator to have different types fconserve-space C++ ObjC++ Reduce the size of object files fconstant-string-class= ObjC ObjC++ Joined -fconst-string-class=<name> Use class <name> for constant strings fdefault-inline C++ ObjC++ Inline member functions by default ; APPLE LOCAL begin disable_typechecking_for_spec_flag fdisable-typechecking-for-spec C C++ Make crossfile type mismatches warnings not errors (for SPEC) ; APPLE LOCAL end disable_typechecking_for_spec_flag fdollars-in-identifiers C ObjC C++ ObjC++ Permit '$' as an identifier character felide-constructors C++ ObjC++ fenforce-eh-specs C++ ObjC++ Generate code to check exception specifications fenum-int-equiv C++ ObjC++ fexec-charset= C ObjC C++ ObjC++ Joined RejectNegative -fexec-charset=<cset> Convert all strings and character constants to character set <cset> fextended-identifiers C ObjC C++ ObjC++ Permit universal character names (\\u and \\U) in identifiers finput-charset= C ObjC C++ ObjC++ Joined RejectNegative -finput-charset=<cset> Specify the default character set for source files fexternal-templates C++ ObjC++ ffor-scope C++ ObjC++ Scope of for-init-statement variables is local to the loop ffreestanding C ObjC Do not assume that standard C libraries and \"main\" exist fgnu-keywords C++ ObjC++ Recognize GNU-defined keywords fgnu-runtime ObjC ObjC++ Generate code for GNU runtime environment fgnu89-inline C ObjC Var(flag_gnu89_inline) Init(-1) Use traditional GNU semantics for inline functions fguiding-decls C++ ObjC++ fhandle-exceptions C++ ObjC++ fhonor-std C++ ObjC++ fhosted C ObjC Assume normal C execution environment fhuge-objects C++ ObjC++ Enable support for huge objects fimplement-inlines C++ ObjC++ Export functions even if they can be inlined fimplicit-inline-templates C++ ObjC++ Emit implicit instantiations of inline templates fimplicit-templates C++ ObjC++ Emit implicit instantiations of templates ffriend-injection C++ ObjC++ Var(flag_friend_injection) Inject friend functions into enclosing namespace flabels-ok C++ ObjC++ ; APPLE LOCAL begin 5612787 mainline sse4 flax-vector-conversions C ObjC C++ ObjC++ Allow implicit conversions between vectors with differing numbers of subparts and/or differing element types. ; APPLE LOCAL end 5612787 mainline sse4 fms-extensions C ObjC C++ ObjC++ Don't warn about uses of Microsoft extensions fname-mangling-version- C++ ObjC++ Joined fnew-abi C++ ObjC++ ; APPLE LOCAL begin nested functions 4258406 4357979 fnested-functions C ObjC Var(flag_nested_functions) Allow nested functions. ; APPLE LOCAL end nested functions 4258406 4357979 fnext-runtime ObjC ObjC++ Generate code for NeXT (Apple Mac OS X) runtime environment fnil-receivers ObjC ObjC++ Assume that receivers of Objective-C messages may be nil ; APPLE LOCAL begin non lvalue assign fnon-lvalue-assign C ObjC C++ ObjC++ Var(flag_non_lvalue_assign) Init(1) Allow assignment to casts and conditional expressions of lvalues ; APPLE LOCAL end non lvalue assign fnonansi-builtins C++ ObjC++ fnonnull-objects C++ ObjC++ ; APPLE LOCAL begin radar 4705250 fobjc-atdefs ObjC ObjC++ Var(flag_objc_atdefs) Init(-1) Allow use of @defs ; APPLE LOCAL end radar 4705250 ; APPLE LOCAL begin objc2 ; Generate special '- .cxx_construct' and '- .cxx_destruct' methods ; to initialize any non-POD ivars in Objective-C++ classes. fobjc-call-cxx-cdtors ObjC++ Var(flag_objc_call_cxx_cdtors) Init(-1) Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed ; APPLE LOCAL end objc2 ; APPLE LOCAL begin radar 4590221 fobjc-direct-dispatch ObjC ObjC++ Var(flag_objc_direct_dispatch) Init(-1) Allow fast jumps to the message dispatcher ; APPLE LOCAL end radar 4590221 ; Nonzero means that we will allow new ObjC exception syntax (@throw, ; @try, etc.) in source code. fobjc-exceptions ObjC ObjC++ Var(flag_objc_exceptions) Enable Objective-C exception and synchronization syntax ; APPLE LOCAL begin ARM hybrid objc-2.0 fobjc-legacy-dispatch ObjC ObjC++ Var(flag_objc_legacy_dispatch) Init(-1) Use Objective-C v1 message dispatching ; APPLE LOCAL end ARM hybrid objc-2.0 ; APPLE LOCAL begin radar 2848255 fobjc-zerocost-exceptions ObjC ObjC++ Var(flag_objc_zerocost_exceptions) Init(0) Enable Objective-C zero-cost exception ; APPLE LOCAL end radar 2848255 ; APPLE LOCAL begin objc new property - not for merge to the FSF fobjc-new-property C C++ ObjC ObjC++ Var(flag_objc_new_property) Init(1) Enable Objective-C new property syntax and semantics ; APPLE LOCAL end objc new property - not for merge to the FSF ; APPLE LOCAL begin radar 5435299 - radar 6173152 fnew-property-ivar-synthesis ObjC ObjC++ Var(flag_new_property_ivar_synthesis) Init(1) Enable new style of fragile-ivar synthesis for properties ; APPLE LOCAL end radar 5435299 - radar 6173152 ; APPLE LOCAL begin radar 4810609 fobjc-gc-only ObjC ObjC++ Var(flag_objc_gc_only) Init(0) Program only supprts (GC) in ObjC/ObjC++ programs ; APPLE LOCAL end radar 4810609 fobjc-gc ObjC ObjC++ Var(flag_objc_gc) Enable garbage collection (GC) in Objective-C/Objective-C++ programs ; APPLE LOCAL begin radar 5811887 - blocks fblocks C ObjC C++ ObjC++ Var(flag_blocks) Init(-1) Program supports c/objc extension blocks ; APPLE LOCAL end radar 5811887 - blocks ; Nonzero means that we generate NeXT setjmp based exceptions. fobjc-sjlj-exceptions ObjC ObjC++ Var(flag_objc_sjlj_exceptions) Init(-1) Enable Objective-C setjmp exception handling runtime fopenmp C ObjC C++ ObjC++ Var(flag_openmp) Enable OpenMP foperator-names C++ ObjC++ Recognize C++ kewords like \"compl\" and \"xor\" foptional-diags C++ ObjC++ Enable optional diagnostics fpch-deps C ObjC C++ ObjC++ fpch-preprocess C ObjC C++ ObjC++ Look for and use PCH files even when preprocessing fpermissive C++ ObjC++ Downgrade conformance errors to warnings fpreprocessed C ObjC C++ ObjC++ Treat the input file as already preprocessed freplace-objc-classes ObjC ObjC++ Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime frepo C++ ObjC++ Enable automatic template instantiation frtti C++ ObjC++ Generate run time type descriptor information ; APPLE LOCAL begin ss2 fsave-repository= C ObjC C++ ObjC++ Joined Separate ; APPLE LOCAL end ss2 fshort-double C ObjC C++ ObjC++ Use the same size for double as for float fshort-enums C ObjC C++ ObjC++ Use the narrowest integer type possible for enumeration types fshort-wchar C ObjC C++ ObjC++ Force the underlying type for \"wchar_t\" to be \"unsigned short\" fsigned-bitfields C ObjC C++ ObjC++ When \"signed\" or \"unsigned\" is not given make the bitfield signed fsigned-char C ObjC C++ ObjC++ Make \"char\" signed by default fsquangle C++ ObjC++ fstats C++ ObjC++ Display statistics accumulated during compilation fstrict-prototype C++ ObjC++ ftabstop= C ObjC C++ ObjC++ Joined RejectNegative UInteger -ftabstop=<number> Distance between tab stops for column reporting ftemplate-depth- C++ ObjC++ Joined RejectNegative UInteger -ftemplate-depth-<number> Specify maximum template instantiation depth fthis-is-variable C++ ObjC++ fthreadsafe-statics C++ ObjC++ -fno-threadsafe-statics Do not generate thread-safe code for initializing local statics funsigned-bitfields C ObjC C++ ObjC++ When \"signed\" or \"unsigned\" is not given make the bitfield unsigned funsigned-char C ObjC C++ ObjC++ Make \"char\" unsigned by default fuse-cxa-atexit C++ ObjC++ Use __cxa_atexit to register destructors fuse-cxa-get-exception-ptr C++ ObjC++ Use __cxa_get_exception_ptr in exception handling fvisibility-inlines-hidden C++ ObjC++ Marks all inlined methods as having hidden visibility ; APPLE LOCAL begin mainline 2007-06-28 ms tinfo compat 4230099 fvisibility-ms-compat C++ ObjC++ Var(flag_visibility_ms_compat) Changes visibility to match Microsoft Visual Studio by default ; APPLE LOCAL end mainline 2007-06-28 ms tinfo compat 4230099 fvtable-gc C++ ObjC++ Discard unused virtual functions fvtable-thunks C++ ObjC++ Implement vtables using thunks fweak C++ ObjC++ Emit common-like symbols as weak symbols fwide-exec-charset= C ObjC C++ ObjC++ Joined RejectNegative -fwide-exec-charset=<cset> Convert all wide strings and character constants to character set <cset> fworking-directory C ObjC C++ ObjC++ Generate a #line directive pointing at the current working directory fxref C++ ObjC++ Emit cross referencing information fzero-link ObjC ObjC++ Generate lazy class lookup (via objc_getClass()) for use in Zero-Link mode gen-decls ObjC ObjC++ Dump declarations to a .decl file idirafter C ObjC C++ ObjC++ Joined Separate -idirafter <dir> Add <dir> to the end of the system include path imacros C ObjC C++ ObjC++ Joined Separate -imacros <file> Accept definition of macros in <file> imultilib C ObjC C++ ObjC++ Joined Separate -imultilib <dir> Set <dir> to be the multilib include subdirectory include C ObjC C++ ObjC++ Joined Separate -include <file> Include the contents of <file> before other files iprefix C ObjC C++ ObjC++ Joined Separate -iprefix <path> Specify <path> as a prefix for next two options isysroot C ObjC C++ ObjC++ Joined Separate -isysroot <dir> Set <dir> to be the system root directory isystem C ObjC C++ ObjC++ Joined Separate -isystem <dir> Add <dir> to the start of the system include path iquote C ObjC C++ ObjC++ Joined Separate -iquote <dir> Add <dir> to the end of the quote include path iwithprefix C ObjC C++ ObjC++ Joined Separate -iwithprefix <dir> Add <dir> to the end of the system include path iwithprefixbefore C ObjC C++ ObjC++ Joined Separate -iwithprefixbefore <dir> Add <dir> to the end of the main include path ; APPLE LOCAL begin ARM iwithsysroot 4917039 iwithsysroot C ObjC C++ ObjC++ Joined Separate -iwithsysroot <dir> Add <sysroot>/<dir> to the start of the system include path ; APPLE LOCAL end ARM iwithsysroot 4917039 lang-asm C Undocumented lang-fortran C Undocumented lang-objc C ObjC C++ ObjC++ Undocumented nostdinc C ObjC C++ ObjC++ Do not search standard system include directories (those specified with -isystem will still be used) nostdinc++ C++ ObjC++ Do not search standard system include directories for C++ o C ObjC C++ ObjC++ Joined Separate ; Documented in common.opt pedantic C ObjC C++ ObjC++ ; Documented in common.opt pedantic-errors C ObjC C++ ObjC++ ; Documented in common.opt print-objc-runtime-info ObjC ObjC++ Generate C header of platform-specific features ; APPLE LOCAL begin radar 5082000 print-objc-ivar-layout ObjC ObjC++ Generate GC ivar layout information ; APPLE LOCAL end radar 5082000 print-pch-checksum C ObjC C++ ObjC++ Print a checksum of the executable for PCH validity checking, and stop remap C ObjC C++ ObjC++ Remap file names when including files std=c++98 C++ ObjC++ Conform to the ISO 1998 C++ standard std=c89 C ObjC Conform to the ISO 1990 C standard std=c99 C ObjC Conform to the ISO 1999 C standard std=c9x C ObjC Deprecated in favor of -std=c99 std=gnu++98 C++ ObjC++ Conform to the ISO 1998 C++ standard with GNU extensions std=gnu89 C ObjC Conform to the ISO 1990 C standard with GNU extensions std=gnu99 C ObjC Conform to the ISO 1999 C standard with GNU extensions std=gnu9x C ObjC Deprecated in favor of -std=gnu99 std=iso9899:1990 C ObjC Conform to the ISO 1990 C standard std=iso9899:199409 C ObjC Conform to the ISO 1990 C standard as amended in 1994 std=iso9899:1999 C ObjC Conform to the ISO 1999 C standard std=iso9899:199x C ObjC Deprecated in favor of -std=iso9899:1999 traditional-cpp C ObjC C++ ObjC++ Enable traditional preprocessing trigraphs C ObjC C++ ObjC++ -trigraphs Support ISO C trigraphs undef C ObjC C++ ObjC++ Do not predefine system-specific and GCC-specific macros v C ObjC C++ ObjC++ Enable verbose output w C ObjC C++ ObjC++ ; Documented in common.opt ; This comment is to ensure we retain the blank line above.