GNU Info
(gcc-295.info)Option Summary
Option Summary
==============
Here is a summary of all the options, grouped by type. Explanations
are in the following sections.
*Overall Options*
Note: Options Controlling the Kind of Output.
-c -S -E -o FILE -pipe -v --help -x LANGUAGE
*C Language Options*
Note: Options Controlling C Dialect.
-ansi -std -fallow-single-precision -fcond-mismatch -fno-asm
-fno-builtin -ffreestanding -fhosted -fsigned-bitfields -fsigned-char
-funsigned-bitfields -funsigned-char -fwritable-strings
-traditional -traditional-cpp -trigraphs
*C++ Language Options*
Note: Options Controlling C++ Dialect.
-fno-access-control -fcheck-new -fconserve-space -fdollars-in-identifiers
-fno-elide-constructors -fexternal-templates -ffor-scope
-fno-for-scope -fno-gnu-keywords -fguiding-decls -fhandle-signatures
-fhonor-std -fhuge-objects -fno-implicit-templates -finit-priority
-fno-implement-inlines -fname-mangling-version-N -fno-default-inline
-foperator-names -fno-optional-diags -fpermissive -frepo -fstrict-prototype
-fsquangle -ftemplate-depth-N -fthis-is-variable -fvtable-thunks
-nostdinc++ -Wctor-dtor-privacy -Wno-deprecated -Weffc++
-Wno-non-template-friend
-Wnon-virtual-dtor -Wold-style-cast -Woverloaded-virtual
-Wno-pmf-conversions -Wreorder -Wsign-promo -Wsynth
*Warning Options*
Note: Options to Request or Suppress Warnings.
-fsyntax-only -pedantic -pedantic-errors
-w -W -Wall -Waggregate-return -Wbad-function-cast
-Wcast-align -Wcast-qual -Wchar-subscripts -Wcomment
-Wconversion -Werror -Wformat
-Wid-clash-LEN -Wimplicit -Wimplicit-int
-Wimplicit-function-declaration -Wimport
-Werror-implicit-function-declaration -Winline
-Wlarger-than-LEN -Wlong-long
-Wmain -Wmissing-declarations -Wmissing-noreturn
-Wmissing-prototypes -Wmultichar -Wnested-externs -Wno-import
-Wparentheses -Wpointer-arith -Wredundant-decls
-Wreturn-type -Wshadow -Wsign-compare -Wstrict-prototypes
-Wswitch -Wtraditional
-Wtrigraphs -Wundef -Wuninitialized -Wunused -Wwrite-strings
-Wunknown-pragmas
*Debugging Options*
Note: Options for Debugging Your Program or GCC.
-a -ax -dLETTERS -fdump-unnumbered -fpretend-float
-fprofile-arcs -ftest-coverage
-g -gLEVEL -gcoff -gdwarf -gdwarf-1 -gdwarf-1+ -gdwarf-2
-ggdb -gstabs -gstabs+ -gxcoff -gxcoff+
-p -pg -print-file-name=LIBRARY -print-libgcc-file-name
-print-prog-name=PROGRAM -print-search-dirs -save-temps
*Optimization Options*
Note: Options that Control Optimization.
-fbranch-probabilities -foptimize-register-moves
-fcaller-saves -fcse-follow-jumps -fcse-skip-blocks
-fdelayed-branch -fexpensive-optimizations
-ffast-math -ffloat-store -fforce-addr -fforce-mem
-fdata-sections -ffunction-sections -fgcse
-finline-functions -finline-limit-N -fkeep-inline-functions
-fno-default-inline -fno-defer-pop -fno-function-cse
-fno-inline -fno-peephole -fomit-frame-pointer -fregmove
-frerun-cse-after-loop -frerun-loop-opt -fschedule-insns
-fschedule-insns2 -fstrength-reduce -fthread-jumps
-funroll-all-loops -funroll-loops
-fmove-all-movables -freduce-all-givs -fstrict-aliasing
-O -O0 -O1 -O2 -O3 -Os
*Preprocessor Options*
Note: Options Controlling the Preprocessor.
-AQUESTION(ANSWER) -C -dD -dM -dN
-DMACRO[=DEFN] -E -H
-idirafter DIR
-include FILE -imacros FILE
-iprefix FILE -iwithprefix DIR
-iwithprefixbefore DIR -isystem DIR -isystem-c++ DIR
-M -MD -MM -MMD -MG -nostdinc -P -trigraphs
-undef -UMACRO -Wp,OPTION
*Assembler Option*
Note: Passing Options to the Assembler.
-Wa,OPTION
*Linker Options*
Note: Options for Linking.
OBJECT-FILE-NAME -lLIBRARY
-nostartfiles -nodefaultlibs -nostdlib
-s -static -shared -symbolic
-Wl,OPTION -Xlinker OPTION
-u SYMBOL
*Directory Options*
Note: Options for Directory Search.
-BPREFIX -IDIR -I- -LDIR -specs=FILE
*Target Options*
Note: Target Options.
-b MACHINE -V VERSION
*Machine Dependent Options*
Note: Hardware Models and Configurations.
*M680x0 Options*
-m68000 -m68020 -m68020-40 -m68020-60 -m68030 -m68040
-m68060 -mcpu32 -m5200 -m68881 -mbitfield -mc68000 -mc68020
-mfpa -mnobitfield -mrtd -mshort -msoft-float
-malign-int
*VAX Options*
-mg -mgnu -munix
*SPARC Options*
-mcpu=CPU TYPE
-mtune=CPU TYPE
-mcmodel=CODE MODEL
-malign-jumps=NUM -malign-loops=NUM
-malign-functions=NUM
-m32 -m64
-mapp-regs -mbroken-saverestore -mcypress -mepilogue
-mflat -mfpu -mhard-float -mhard-quad-float
-mimpure-text -mlive-g0 -mno-app-regs -mno-epilogue
-mno-flat -mno-fpu -mno-impure-text
-mno-stack-bias -mno-unaligned-doubles
-msoft-float -msoft-quad-float -msparclite -mstack-bias
-msupersparc -munaligned-doubles -mv8
*Convex Options*
-mc1 -mc2 -mc32 -mc34 -mc38
-margcount -mnoargcount
-mlong32 -mlong64
-mvolatile-cache -mvolatile-nocache
*AMD29K Options*
-m29000 -m29050 -mbw -mnbw -mdw -mndw
-mlarge -mnormal -msmall
-mkernel-registers -mno-reuse-arg-regs
-mno-stack-check -mno-storem-bug
-mreuse-arg-regs -msoft-float -mstack-check
-mstorem-bug -muser-registers
*ARM Options*
-mapcs-frame -mno-apcs-frame
-mapcs-26 -mapcs-32
-mapcs-stack-check -mno-apcs-stack-check
-mapcs-float -mno-apcs-float
-mapcs-reentrant -mno-apcs-reentrant
-msched-prolog -mno-sched-prolog
-mlittle-endian -mbig-endian -mwords-little-endian
-mshort-load-bytes -mno-short-load-bytes -mshort-load-words -mno-short-load-words
-msoft-float -mhard-float -mfpe
-mthumb-interwork -mno-thumb-interwork
-mcpu= -march= -mfpe=
-mstructure-size-boundary=
-mbsd -mxopen -mno-symrename
-mabort-on-noreturn
-mno-sched-prolog
*Thumb Options*
-mtpcs-frame -mno-tpcs-frame
-mtpcs-leaf-frame -mno-tpcs-leaf-frame
-mlittle-endian -mbig-endian
-mthumb-interwork -mno-thumb-interwork
-mstructure-size-boundary=
*MN10200 Options*
-mrelax
*MN10300 Options*
-mmult-bug
-mno-mult-bug
-mrelax
*M32R/D Options*
-mcode-model=MODEL TYPE -msdata=SDATA TYPE
-G NUM
*M88K Options*
-m88000 -m88100 -m88110 -mbig-pic
-mcheck-zero-division -mhandle-large-shift
-midentify-revision -mno-check-zero-division
-mno-ocs-debug-info -mno-ocs-frame-position
-mno-optimize-arg-area -mno-serialize-volatile
-mno-underscores -mocs-debug-info
-mocs-frame-position -moptimize-arg-area
-mserialize-volatile -mshort-data-NUM -msvr3
-msvr4 -mtrap-large-shift -muse-div-instruction
-mversion-03.00 -mwarn-passed-structs
*RS/6000 and PowerPC Options*
-mcpu=CPU TYPE
-mtune=CPU TYPE
-mpower -mno-power -mpower2 -mno-power2
-mpowerpc -mno-powerpc
-mpowerpc-gpopt -mno-powerpc-gpopt
-mpowerpc-gfxopt -mno-powerpc-gfxopt
-mnew-mnemonics -mno-new-mnemonics
-mfull-toc -mminimal-toc -mno-fop-in-toc -mno-sum-in-toc
-maix64 -maix32 -mxl-call -mno-xl-call -mthreads -mpe
-msoft-float -mhard-float -mmultiple -mno-multiple
-mstring -mno-string -mupdate -mno-update
-mfused-madd -mno-fused-madd -mbit-align -mno-bit-align
-mstrict-align -mno-strict-align -mrelocatable
-mno-relocatable -mrelocatable-lib -mno-relocatable-lib
-mtoc -mno-toc -mlittle -mlittle-endian -mbig -mbig-endian
-mcall-aix -mcall-sysv -mprototype -mno-prototype
-msim -mmvme -mads -myellowknife -memb -msdata
-msdata=OPT -G NUM
*RT Options*
-mcall-lib-mul -mfp-arg-in-fpregs -mfp-arg-in-gregs
-mfull-fp-blocks -mhc-struct-return -min-line-mul
-mminimum-fp-blocks -mnohc-struct-return
*MIPS Options*
-mabicalls -mcpu=CPU TYPE -membedded-data
-membedded-pic -mfp32 -mfp64 -mgas -mgp32 -mgp64
-mgpopt -mhalf-pic -mhard-float -mint64 -mips1
-mips2 -mips3 -mips4 -mlong64 -mlong32 -mlong-calls -mmemcpy
-mmips-as -mmips-tfile -mno-abicalls
-mno-embedded-data -mno-embedded-pic
-mno-gpopt -mno-long-calls
-mno-memcpy -mno-mips-tfile -mno-rnames -mno-stats
-mrnames -msoft-float
-m4650 -msingle-float -mmad
-mstats -EL -EB -G NUM -nocpp
-mabi=32 -mabi=n32 -mabi=64 -mabi=eabi
*i386 Options*
-mcpu=CPU TYPE
-march=CPU TYPE
-mieee-fp -mno-fancy-math-387
-mno-fp-ret-in-387 -msoft-float -msvr3-shlib
-mno-wide-multiply -mrtd -malign-double
-mreg-alloc=LIST -mregparm=NUM
-malign-jumps=NUM -malign-loops=NUM
-malign-functions=NUM -mpreferred-stack-boundary=NUM
*HPPA Options*
-march=ARCHITECTURE TYPE
-mbig-switch -mdisable-fpregs -mdisable-indexing
-mfast-indirect-calls -mgas -mjump-in-delay
-mlong-load-store -mno-big-switch -mno-disable-fpregs
-mno-disable-indexing -mno-fast-indirect-calls -mno-gas
-mno-jump-in-delay -mno-long-load-store
-mno-portable-runtime -mno-soft-float -mno-space
-mno-space-regs -msoft-float -mpa-risc-1-0
-mpa-risc-1-1 -mpa-risc-2-0 -mportable-runtime
-mschedule=CPU TYPE -mspace -mspace-regs
*Intel 960 Options*
-mCPU TYPE -masm-compat -mclean-linkage
-mcode-align -mcomplex-addr -mleaf-procedures
-mic-compat -mic2.0-compat -mic3.0-compat
-mintel-asm -mno-clean-linkage -mno-code-align
-mno-complex-addr -mno-leaf-procedures
-mno-old-align -mno-strict-align -mno-tail-call
-mnumerics -mold-align -msoft-float -mstrict-align
-mtail-call
*DEC Alpha Options*
-mfp-regs -mno-fp-regs -mno-soft-float -msoft-float
-malpha-as -mgas
-mieee -mieee-with-inexact -mieee-conformant
-mfp-trap-mode=MODE -mfp-rounding-mode=MODE
-mtrap-precision=MODE -mbuild-constants
-mcpu=CPU TYPE
-mbwx -mno-bwx -mcix -mno-cix -mmax -mno-max
-mmemory-latency=TIME
*Clipper Options*
-mc300 -mc400
*H8/300 Options*
-mrelax -mh -ms -mint32 -malign-300
*SH Options*
-m1 -m2 -m3 -m3e -mb -ml -mdalign -mrelax
*System V Options*
-Qy -Qn -YP,PATHS -Ym,DIR
*ARC Options*
-EB -EL
-mmangle-cpu -mcpu=CPU -mtext=TEXT SECTION
-mdata=DATA SECTION -mrodata=READONLY DATA SECTION
*TMS320C3x/C4x Options*
-mcpu=CPU -mbig -msmall -mregparm -mmemparm
-mfast-fix -mmpyi -mbk -mti -mdp-isr-reload
-mrpts=COUNT -mrptb -mdb -mloop-unsigned
-mparallel-insns -mparallel-mpy -mpreserve-float
*V850 Options*
-mlong-calls -mno-long-calls -mep -mno-ep
-mprolog-function -mno-prolog-function -mspace
-mtda=N -msda=N -mzda=N
-mv850 -mbig-switch
*NS32K Options*
-m32032 -m32332 -m32532 -m32081 -m32381 -mmult-add -mnomult-add
-msoft-float -mrtd -mnortd -mregparam -mnoregparam -msb -mnosb
-mbitfield -mnobitfield -mhimem -mnohimem
*Code Generation Options*
Note: Options for Code Generation Conventions.
-fcall-saved-REG -fcall-used-REG
-fexceptions -ffixed-REG -finhibit-size-directive
-fcheck-memory-usage -fprefix-function-name
-fno-common -fno-ident -fno-gnu-linker
-fpcc-struct-return -fpic -fPIC
-freg-struct-return -fshared-data -fshort-enums
-fshort-double -fvolatile -fvolatile-global -fvolatile-static
-fverbose-asm -fpack-struct -fstack-check
-fargument-alias -fargument-noalias
-fargument-noalias-global
-fleading-underscore
Overall Options- Controlling the kind of output: an executable, object files, assembler files, or preprocessed source.
- C Dialect Options
- Controlling the variant of C language compiled.
- C++ Dialect Options
- Variations on C++.
- Warning Options
- How picky should the compiler be?
- Debugging Options
- Symbol tables, measurements, and debugging dumps.
- Optimize Options
- How much optimization?
- Preprocessor Options
- Controlling header files and macro definitions. Also, getting dependency information for Make.
- Assembler Options
- Passing options to the assembler.
- Link Options
- Specifying libraries and so on.
- Directory Options
- Where to find header files and libraries. Where to find the compiler executable files.
- Target Options
- Running a cross-compiler, or an old version of GCC.
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