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Using the GNU Compiler Collection: Option Summary
2.1 Option Summary
Here is a summary of all the options, grouped by type. Explanations are
in the following sections.
- Overall Options
- See section Options Controlling the Kind of Output.
| -c -S -E -o file -pipe -v --help -x language
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- C Language Options
- See section Options Controlling C Dialect.
| -ansi -fstd -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
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- C++ Language Options
- See section 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
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- Warning Options
- See section 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
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- Debugging Options
- See section 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
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- Optimization Options
- See section 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
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- Preprocessor Options
- See section 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
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- Assembler Option
- See section Passing Options to the Assembler.
- Linker Options
- See section Options for Linking.
| object-file-name -llibrary
-nostartfiles -nodefaultlibs -nostdlib
-s -static -shared -symbolic
-Wl,option -Xlinker option
-u symbol
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- Directory Options
- See section Options for Directory Search.
| -Bprefix -Idir -I- -Ldir -specs=file
|
- Target Options
- See section 2.13 Specifying Target Machine and Compiler Version.
- Machine Dependent Options
- See section 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
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- Code Generation Options
- See section 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
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