Option Index

GCC's command line options are indexed here without any initial `-' or `--'. Where an option has both positive and negative forms (such as `-foption' and `-fno-option'), relevant entries in the manual are indexed under the most appropriate form; it may sometimes be useful to look up both forms.

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	Index Entry	Section

A
	`a`	3.9 Options for Debugging Your Program or GCC
	`A`	3.11 Options Controlling the Preprocessor
	`ansi`	2. Language Standards Supported by GCC
	`ansi`	3.4 Options Controlling C Dialect
	`ansi`	5.43 Other built-in functions provided by GNU CC
	`ansi`	9.11 Certain Changes We Don't Want to Make
	`aux-info`	3.4 Options Controlling C Dialect
	`ax`	3.9 Options for Debugging Your Program or GCC

B
	`b`	3.16 Specifying Target Machine and Compiler Version
	`B`	3.14 Options for Directory Search

C
	`c`	3.2 Options Controlling the Kind of Output
	`C`	3.11 Options Controlling the Preprocessor
	`c`	3.13 Options for Linking

D
	`D`	3.11 Options Controlling the Preprocessor
	`d`	3.9 Options for Debugging Your Program or GCC
	`da`	3.9 Options for Debugging Your Program or GCC
	`dA`	3.9 Options for Debugging Your Program or GCC
	`dB`	3.9 Options for Debugging Your Program or GCC
	`db`	3.9 Options for Debugging Your Program or GCC
	`dB`	17. Passes and Files of the Compiler
	`dc`	3.9 Options for Debugging Your Program or GCC
	`dC`	3.9 Options for Debugging Your Program or GCC
	`dc`	17. Passes and Files of the Compiler
	`dd`	3.9 Options for Debugging Your Program or GCC
	`dD`	3.9 Options for Debugging Your Program or GCC
	`dD`	3.11 Options Controlling the Preprocessor
	`dd`	17. Passes and Files of the Compiler
	`dE`	3.9 Options for Debugging Your Program or GCC
	`de`	3.9 Options for Debugging Your Program or GCC
	`dE`	17. Passes and Files of the Compiler
	`de`	17. Passes and Files of the Compiler
	`df`	3.9 Options for Debugging Your Program or GCC
	`dF`	3.9 Options for Debugging Your Program or GCC
	`df`	17. Passes and Files of the Compiler
	`dg`	3.9 Options for Debugging Your Program or GCC
	`dG`	3.9 Options for Debugging Your Program or GCC
	`dG`	17. Passes and Files of the Compiler
	`dg`	17. Passes and Files of the Compiler
	`di`	3.9 Options for Debugging Your Program or GCC
	`dI`	3.11 Options Controlling the Preprocessor
	`di`	17. Passes and Files of the Compiler
	`dj`	3.9 Options for Debugging Your Program or GCC
	`dJ`	3.9 Options for Debugging Your Program or GCC
	`dJ`	17. Passes and Files of the Compiler
	`dj`	17. Passes and Files of the Compiler
	`dk`	3.9 Options for Debugging Your Program or GCC
	`dk`	17. Passes and Files of the Compiler
	`dL`	3.9 Options for Debugging Your Program or GCC
	`dl`	3.9 Options for Debugging Your Program or GCC
	`dl`	17. Passes and Files of the Compiler
	`dL`	17. Passes and Files of the Compiler
	`dm`	3.9 Options for Debugging Your Program or GCC
	`dM`	3.9 Options for Debugging Your Program or GCC
	`dM`	3.11 Options Controlling the Preprocessor
	`dn`	3.9 Options for Debugging Your Program or GCC
	`dN`	3.9 Options for Debugging Your Program or GCC
	`dN`	3.11 Options Controlling the Preprocessor
	`dN`	17. Passes and Files of the Compiler
	`do`	3.9 Options for Debugging Your Program or GCC
	`dp`	3.9 Options for Debugging Your Program or GCC
	`dP`	3.9 Options for Debugging Your Program or GCC
	`dr`	3.9 Options for Debugging Your Program or GCC
	`dR`	3.9 Options for Debugging Your Program or GCC
	`dR`	17. Passes and Files of the Compiler
	`dr`	17. Passes and Files of the Compiler
	`dS`	3.9 Options for Debugging Your Program or GCC
	`ds`	3.9 Options for Debugging Your Program or GCC
	`ds`	17. Passes and Files of the Compiler
	`dS`	17. Passes and Files of the Compiler
	`dt`	3.9 Options for Debugging Your Program or GCC
	`dt`	17. Passes and Files of the Compiler
	`dumpmachine`	3.9 Options for Debugging Your Program or GCC
	`dumpspecs`	3.9 Options for Debugging Your Program or GCC
	`dumpversion`	3.9 Options for Debugging Your Program or GCC
	`dv`	3.9 Options for Debugging Your Program or GCC
	`dw`	3.9 Options for Debugging Your Program or GCC
	`dx`	3.9 Options for Debugging Your Program or GCC
	`dX`	3.9 Options for Debugging Your Program or GCC
	`dX`	17. Passes and Files of the Compiler
	`dy`	3.9 Options for Debugging Your Program or GCC
	`dz`	3.9 Options for Debugging Your Program or GCC

E
	`E`	3.2 Options Controlling the Kind of Output
	`E`	3.11 Options Controlling the Preprocessor
	`E`	3.13 Options for Linking
	`EB`	3.17.14 MIPS Options
	`EB`	3.17.25 ARC Options
	`EL`	3.17.14 MIPS Options
	`EL`	3.17.25 ARC Options

F
	`falign-functions`	3.10 Options That Control Optimization
	`falign-jumps`	3.10 Options That Control Optimization
	`falign-labels`	3.10 Options That Control Optimization
	`falign-loops`	3.10 Options That Control Optimization
	`fallow-single-precision`	3.4 Options Controlling C Dialect
	`falt-external-templates`	3.5 Options Controlling C++ Dialect
	`falt-external-templates`	6.6 Where's the Template?
	`fargument-alias`	3.18 Options for Code Generation Conventions
	`fargument-noalias`	3.18 Options for Code Generation Conventions
	`fargument-noalias-global`	3.18 Options for Code Generation Conventions
	`fbranch-probabilities`	3.10 Options That Control Optimization
	`fcall-saved`	3.18 Options for Code Generation Conventions
	`fcall-saved`	9.3 Interoperation
	`fcall-used`	3.18 Options for Code Generation Conventions
	`fcaller-saves`	3.10 Options That Control Optimization
	`fcheck-memory-usage`	3.18 Options for Code Generation Conventions
	`fcheck-memory-usage`	5.26 Declaring Attributes of Functions
	`fcheck-new`	3.5 Options Controlling C++ Dialect
	`fcond-mismatch`	3.4 Options Controlling C Dialect
	`fconserve-space`	3.5 Options Controlling C++ Dialect
	`fconstant-string-class`	3.6 Options Controlling Objective-C Dialect
	`fcse-follow-jumps`	3.10 Options That Control Optimization
	`fcse-skip-blocks`	3.10 Options That Control Optimization
	`fdata-sections`	3.10 Options That Control Optimization
	`fdce`	3.10 Options That Control Optimization
	`fdce`	17. Passes and Files of the Compiler
	`fdelayed-branch`	3.10 Options That Control Optimization
	`fdelete-null-pointer-checks`	3.10 Options That Control Optimization
	`fdiagnostics-show-location`	3.7 Options to Control Diagnostic Messages Formatting
	`fdollars-in-identifiers`	3.5 Options Controlling C++ Dialect
	`fdollars-in-identifiers`	9.3 Interoperation
	`fdump-ast`	3.9 Options for Debugging Your Program or GCC
	`fdump-class-hierarchy`	3.9 Options for Debugging Your Program or GCC
	`fdump-translation-unit`	3.9 Options for Debugging Your Program or GCC
	`fdump-unnumbered`	3.9 Options for Debugging Your Program or GCC
	`fexceptions`	3.18 Options for Code Generation Conventions
	`fexpensive-optimizations`	3.10 Options That Control Optimization
	`fexternal-templates`	3.5 Options Controlling C++ Dialect
	`fexternal-templates`	6.6 Where's the Template?
	`ffast-math`	3.10 Options That Control Optimization
	`ffixed`	3.18 Options for Code Generation Conventions
	`ffloat-store`	3.10 Options That Control Optimization
	`ffloat-store`	9.8 Disappointments and Misunderstandings
	`ffor-scope`	3.5 Options Controlling C++ Dialect
	`fforce-addr`	3.10 Options That Control Optimization
	`fforce-mem`	3.10 Options That Control Optimization
	`ffreestanding`	2. Language Standards Supported by GCC
	`ffreestanding`	3.4 Options Controlling C Dialect
	`ffreestanding`	5.26 Declaring Attributes of Functions
	`ffunction-sections`	3.10 Options That Control Optimization
	`fgcse`	3.10 Options That Control Optimization
	`fgnu-runtime`	3.6 Options Controlling Objective-C Dialect
	`fhosted`	3.4 Options Controlling C Dialect
	`finhibit-size-directive`	3.18 Options for Code Generation Conventions
	`finline-functions`	3.10 Options That Control Optimization
	`finline-limit`	3.10 Options That Control Optimization
	`finstrument-functions`	3.18 Options for Code Generation Conventions
	`finstrument-functions`	5.26 Declaring Attributes of Functions
	`fkeep-inline-functions`	3.10 Options That Control Optimization
	`fkeep-inline-functions`	5.35 An Inline Function is As Fast As a Macro
	`fkeep-static-consts`	3.10 Options That Control Optimization
	`fleading-underscore`	3.18 Options for Code Generation Conventions
	`fmem-report`	3.9 Options for Debugging Your Program or GCC
	`fmessage-length`	3.7 Options to Control Diagnostic Messages Formatting
	`fmove-all-movables`	3.10 Options That Control Optimization
	`fms-extensions`	3.5 Options Controlling C++ Dialect
	`fnext-runtime`	3.6 Options Controlling Objective-C Dialect
	`fno-access-control`	3.5 Options Controlling C++ Dialect
	`fno-asm`	3.4 Options Controlling C Dialect
	`fno-builtin`	3.4 Options Controlling C Dialect
	`fno-builtin`	5.43 Other built-in functions provided by GNU CC
	`fno-common`	3.18 Options for Code Generation Conventions
	`fno-common`	5.33 Specifying Attributes of Variables
	`fno-const-strings`	3.5 Options Controlling C++ Dialect
	`fno-default-inline`	3.5 Options Controlling C++ Dialect
	`fno-default-inline`	3.10 Options That Control Optimization
	`fno-default-inline`	5.35 An Inline Function is As Fast As a Macro
	`fno-defer-pop`	3.10 Options That Control Optimization
	`fno-elide-constructors`	3.5 Options Controlling C++ Dialect
	`fno-enforce-eh-specs`	3.5 Options Controlling C++ Dialect
	`fno-for-scope`	3.5 Options Controlling C++ Dialect
	`fno-function-cse`	3.10 Options That Control Optimization
	`fno-gnu-keywords`	3.5 Options Controlling C++ Dialect
	`fno-gnu-linker`	3.18 Options for Code Generation Conventions
	`fno-guess-branch-probability`	3.10 Options That Control Optimization
	`fno-honor-std`	3.5 Options Controlling C++ Dialect
	`fno-ident`	3.18 Options for Code Generation Conventions
	`fno-implement-inlines`	3.5 Options Controlling C++ Dialect
	`fno-implement-inlines`	6.5 Declarations and Definitions in One Header
	`fno-implicit-inline-templates`	3.5 Options Controlling C++ Dialect
	`fno-implicit-templates`	3.5 Options Controlling C++ Dialect
	`fno-implicit-templates`	6.6 Where's the Template?
	`fno-inline`	3.10 Options That Control Optimization
	`fno-math-errno`	3.10 Options That Control Optimization
	`fno-nonansi-builtins`	3.5 Options Controlling C++ Dialect
	`fno-operator-names`	3.5 Options Controlling C++ Dialect
	`fno-optional-diags`	3.5 Options Controlling C++ Dialect
	`fno-peephole`	3.10 Options That Control Optimization
	`fno-peephole2`	3.10 Options That Control Optimization
	`fno-rtti`	3.5 Options Controlling C++ Dialect
	`fno-signed-bitfields`	3.4 Options Controlling C Dialect
	`fno-stack-limit`	3.18 Options for Code Generation Conventions
	`fno-unsigned-bitfields`	3.4 Options Controlling C Dialect
	`fno-weak`	3.5 Options Controlling C++ Dialect
	`fnon-call-exceptions`	3.18 Options for Code Generation Conventions
	`fomit-frame-pointer`	3.10 Options That Control Optimization
	`foptimize-register-move`	3.10 Options That Control Optimization
	`foptimize-sibling-calls`	3.10 Options That Control Optimization
	`fpack-struct`	3.18 Options for Code Generation Conventions
	`fpcc-struct-return`	3.18 Options for Code Generation Conventions
	`fpcc-struct-return`	9.5 Incompatibilities of GCC
	`fpermissive`	3.5 Options Controlling C++ Dialect
	`fpic`	3.18 Options for Code Generation Conventions
	`fPIC`	3.18 Options for Code Generation Conventions
	`fprefix-function-name`	3.18 Options for Code Generation Conventions
	`fpreprocessed`	3.11 Options Controlling the Preprocessor
	`fpretend-float`	3.9 Options for Debugging Your Program or GCC
	`fprofile-arcs`	3.9 Options for Debugging Your Program or GCC
	`fprofile-arcs`	5.43 Other built-in functions provided by GNU CC
	`freduce-all-givs`	3.10 Options That Control Optimization
	`freg-struct-return`	3.18 Options for Code Generation Conventions
	`fregmove`	3.10 Options That Control Optimization
	`frename-registers`	3.10 Options That Control Optimization
	`frepo`	3.5 Options Controlling C++ Dialect
	`frepo`	6.6 Where's the Template?
	`frerun-cse-after-loop`	3.10 Options That Control Optimization
	`frerun-cse-after-loop`	17. Passes and Files of the Compiler
	`frerun-loop-opt`	3.10 Options That Control Optimization
	`fschedule-insns`	3.10 Options That Control Optimization
	`fschedule-insns2`	3.10 Options That Control Optimization
	`fshared-data`	3.18 Options for Code Generation Conventions
	`fshort-double`	3.18 Options for Code Generation Conventions
	`fshort-enums`	3.18 Options for Code Generation Conventions
	`fshort-enums`	5.34 Specifying Attributes of Types
	`fshort-enums`	9.11 Certain Changes We Don't Want to Make
	`fshort-wchar`	3.4 Options Controlling C Dialect
	`fsigned-bitfields`	3.4 Options Controlling C Dialect
	`fsigned-bitfields`	9.11 Certain Changes We Don't Want to Make
	`fsigned-char`	3.4 Options Controlling C Dialect
	`fsingle-precision-constant`	3.10 Options That Control Optimization
	`fssa`	3.10 Options That Control Optimization
	`fssa`	17. Passes and Files of the Compiler
	`fstack-check`	3.18 Options for Code Generation Conventions
	`fstack-limit-register`	3.18 Options for Code Generation Conventions
	`fstack-limit-symbol`	3.18 Options for Code Generation Conventions
	`fstats`	3.5 Options Controlling C++ Dialect
	`fstrength-reduce`	3.10 Options That Control Optimization
	`fstrict-aliasing`	3.10 Options That Control Optimization
	`fsyntax-only`	3.8 Options to Request or Suppress Warnings
	`ftemplate-depth`	3.5 Options Controlling C++ Dialect
	`ftest-coverage`	3.9 Options for Debugging Your Program or GCC
	`fthread-jumps`	3.10 Options That Control Optimization
	`fthread-jumps`	17. Passes and Files of the Compiler
	`ftime-report`	3.9 Options for Debugging Your Program or GCC
	`ftrapv`	3.10 Options That Control Optimization
	`funroll-all-loops`	3.10 Options That Control Optimization
	`funroll-loops`	3.10 Options That Control Optimization
	`funroll-loops`	9.11 Certain Changes We Don't Want to Make
	`funsigned-bitfields`	3.4 Options Controlling C Dialect
	`funsigned-bitfields`	9.11 Certain Changes We Don't Want to Make
	`funsigned-char`	3.4 Options Controlling C Dialect
	`funwind-tables`	3.18 Options for Code Generation Conventions
	`fuse-cxa-atexit`	3.5 Options Controlling C++ Dialect
	`fverbose-asm`	3.18 Options for Code Generation Conventions
	`fvolatile`	3.18 Options for Code Generation Conventions
	`fvolatile-global`	3.18 Options for Code Generation Conventions
	`fvolatile-static`	3.18 Options for Code Generation Conventions
	`fwritable-strings`	3.4 Options Controlling C Dialect
	`fwritable-strings`	9.5 Incompatibilities of GCC

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