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Next: <a rel="next" accesskey="n" href="Overall-Options.html#Overall-Options">Overall Options</a>,
Up: <a rel="up" accesskey="u" href="Invoking-GCC.html#Invoking-GCC">Invoking GCC</a>
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<h3 class="section">3.1 Option Summary</h3>
<p>Here is a summary of all the options, grouped by type. Explanations are
in the following sections.
<dl>
<dt><em>Overall Options</em><dd>See <a href="Overall-Options.html#Overall-Options">Options Controlling the Kind of Output</a>.
<pre class="smallexample"> -c -S -E -o <var>file</var> -no-canonical-prefixes
-pipe -pass-exit-codes
-x <var>language</var> -v -### --help<span class="roman">[</span>=<var>class</var><span class="roman">[</span>,...<span class="roman">]]</span> --target-help
--version -wrapper @<var>file</var> -fplugin=<var>file</var> -fplugin-arg-<var>name</var>=<var>arg</var>
-fdump-ada-spec<span class="roman">[</span>-slim<span class="roman">]</span> -fada-spec-parent=<var>unit</var> -fdump-go-spec=<var>file</var>
</pre>
<br><dt><em>C Language Options</em><dd>See <a href="C-Dialect-Options.html#C-Dialect-Options">Options Controlling C Dialect</a>.
<pre class="smallexample"> -ansi -std=<var>standard</var> -fgnu89-inline
-aux-info <var>filename</var> -fallow-parameterless-variadic-functions
-fno-asm -fno-builtin -fno-builtin-<var>function</var>
-fhosted -ffreestanding -fopenacc -fopenmp -fopenmp-simd
-fms-extensions -fplan9-extensions -trigraphs -traditional -traditional-cpp
-fallow-single-precision -fcond-mismatch -flax-vector-conversions
-fsigned-bitfields -fsigned-char
-funsigned-bitfields -funsigned-char
</pre>
<br><dt><em>C++ Language Options</em><dd>See <a href="C_002b_002b-Dialect-Options.html#C_002b_002b-Dialect-Options">Options Controlling C++ Dialect</a>.
<pre class="smallexample"> -fabi-version=<var>n</var> -fno-access-control -fcheck-new
-fconstexpr-depth=<var>n</var> -ffriend-injection
-fno-elide-constructors
-fno-enforce-eh-specs
-ffor-scope -fno-for-scope -fno-gnu-keywords
-fno-implicit-templates
-fno-implicit-inline-templates
-fno-implement-inlines -fms-extensions
-fno-nonansi-builtins -fnothrow-opt -fno-operator-names
-fno-optional-diags -fpermissive
-fno-pretty-templates
-frepo -fno-rtti -fsized-deallocation
-fstats -ftemplate-backtrace-limit=<var>n</var>
-ftemplate-depth=<var>n</var>
-fno-threadsafe-statics -fuse-cxa-atexit
-fno-weak -nostdinc++
-fvisibility-inlines-hidden
-fvtable-verify=<span class="roman">[</span>std<span class="roman">|</span>preinit<span class="roman">|</span>none<span class="roman">]</span>
-fvtv-counts -fvtv-debug
-fvisibility-ms-compat
-fext-numeric-literals
-Wabi=<var>n</var> -Wabi-tag -Wconversion-null -Wctor-dtor-privacy
-Wdelete-non-virtual-dtor -Wliteral-suffix -Wnarrowing
-Wnoexcept -Wnon-virtual-dtor -Wreorder
-Weffc++ -Wstrict-null-sentinel
-Wno-non-template-friend -Wold-style-cast
-Woverloaded-virtual -Wno-pmf-conversions
-Wsign-promo
</pre>
<br><dt><em>Objective-C and Objective-C++ Language Options</em><dd>See <a href="Objective_002dC-and-Objective_002dC_002b_002b-Dialect-Options.html#Objective_002dC-and-Objective_002dC_002b_002b-Dialect-Options">Options Controlling Objective-C and Objective-C++ Dialects</a>.
<pre class="smallexample"> -fconstant-string-class=<var>class-name</var>
-fgnu-runtime -fnext-runtime
-fno-nil-receivers
-fobjc-abi-version=<var>n</var>
-fobjc-call-cxx-cdtors
-fobjc-direct-dispatch
-fobjc-exceptions
-fobjc-gc
-fobjc-nilcheck
-fobjc-std=objc1
-fno-local-ivars
-fivar-visibility=<span class="roman">[</span>public<span class="roman">|</span>protected<span class="roman">|</span>private<span class="roman">|</span>package<span class="roman">]</span>
-freplace-objc-classes
-fzero-link
-gen-decls
-Wassign-intercept
-Wno-protocol -Wselector
-Wstrict-selector-match
-Wundeclared-selector
</pre>
<br><dt><em>Language Independent Options</em><dd>See <a href="Language-Independent-Options.html#Language-Independent-Options">Options to Control Diagnostic Messages Formatting</a>.
<pre class="smallexample"> -fmessage-length=<var>n</var>
-fdiagnostics-show-location=<span class="roman">[</span>once<span class="roman">|</span>every-line<span class="roman">]</span>
-fdiagnostics-color=<span class="roman">[</span>auto<span class="roman">|</span>never<span class="roman">|</span>always<span class="roman">]</span>
-fno-diagnostics-show-option -fno-diagnostics-show-caret
</pre>
<br><dt><em>Warning Options</em><dd>See <a href="Warning-Options.html#Warning-Options">Options to Request or Suppress Warnings</a>.
<pre class="smallexample"> -fsyntax-only -fmax-errors=<var>n</var> -Wpedantic
-pedantic-errors
-w -Wextra -Wall -Waddress -Waggregate-return
-Waggressive-loop-optimizations -Warray-bounds -Warray-bounds=<var>n</var>
-Wbool-compare
-Wno-attributes -Wno-builtin-macro-redefined
-Wc90-c99-compat -Wc99-c11-compat
-Wc++-compat -Wc++11-compat -Wc++14-compat -Wcast-align -Wcast-qual
-Wchar-subscripts -Wclobbered -Wcomment -Wconditionally-supported
-Wconversion -Wcoverage-mismatch -Wdate-time -Wdelete-incomplete -Wno-cpp
-Wno-deprecated -Wno-deprecated-declarations -Wno-designated-init
-Wdisabled-optimization
-Wno-discarded-qualifiers -Wno-discarded-array-qualifiers
-Wno-div-by-zero -Wdouble-promotion -Wempty-body -Wenum-compare
-Wno-endif-labels -Werror -Werror=*
-Wfatal-errors -Wfloat-equal -Wformat -Wformat=2
-Wno-format-contains-nul -Wno-format-extra-args -Wformat-nonliteral
-Wformat-security -Wformat-signedness -Wformat-y2k
-Wframe-larger-than=<var>len</var> -Wno-free-nonheap-object -Wjump-misses-init
-Wignored-qualifiers -Wincompatible-pointer-types
-Wimplicit -Wimplicit-function-declaration -Wimplicit-int
-Winit-self -Winline -Wno-int-conversion
-Wno-int-to-pointer-cast -Wno-invalid-offsetof
-Winvalid-pch -Wlarger-than=<var>len</var> -Wunsafe-loop-optimizations
-Wlogical-op -Wlogical-not-parentheses -Wlong-long
-Wmain -Wmaybe-uninitialized -Wmemset-transposed-args -Wmissing-braces
-Wmissing-field-initializers -Wmissing-include-dirs
-Wno-multichar -Wnonnull -Wnormalized=<span class="roman">[</span>none<span class="roman">|</span>id<span class="roman">|</span>nfc<span class="roman">|</span>nfkc<span class="roman">]</span>
-Wodr -Wno-overflow -Wopenmp-simd
-Woverlength-strings -Wpacked -Wpacked-bitfield-compat -Wpadded
-Wparentheses -Wpedantic-ms-format -Wno-pedantic-ms-format
-Wpointer-arith -Wno-pointer-to-int-cast
-Wredundant-decls -Wno-return-local-addr
-Wreturn-type -Wsequence-point -Wshadow -Wno-shadow-ivar
-Wshift-count-negative -Wshift-count-overflow
-Wsign-compare -Wsign-conversion -Wfloat-conversion
-Wsizeof-pointer-memaccess -Wsizeof-array-argument
-Wstack-protector -Wstack-usage=<var>len</var> -Wstrict-aliasing
-Wstrict-aliasing=n -Wstrict-overflow -Wstrict-overflow=<var>n</var>
-Wsuggest-attribute=<span class="roman">[</span>pure<span class="roman">|</span>const<span class="roman">|</span>noreturn<span class="roman">|</span>format<span class="roman">]</span>
-Wsuggest-final-types -Wsuggest-final-methods -Wsuggest-override
-Wmissing-format-attribute
-Wswitch -Wswitch-default -Wswitch-enum -Wswitch-bool -Wsync-nand
-Wsystem-headers -Wtrampolines -Wtrigraphs -Wtype-limits -Wundef
-Wuninitialized -Wunknown-pragmas -Wno-pragmas
-Wunsuffixed-float-constants -Wunused -Wunused-function
-Wunused-label -Wunused-local-typedefs -Wunused-parameter
-Wno-unused-result -Wunused-value -Wunused-variable
-Wunused-but-set-parameter -Wunused-but-set-variable
-Wuseless-cast -Wvariadic-macros -Wvector-operation-performance
-Wvla -Wvolatile-register-var -Wwrite-strings
-Wzero-as-null-pointer-constant
</pre>
<br><dt><em>C and Objective-C-only Warning Options</em><dd>
<pre class="smallexample"> -Wbad-function-cast -Wmissing-declarations
-Wmissing-parameter-type -Wmissing-prototypes -Wnested-externs
-Wold-style-declaration -Wold-style-definition
-Wstrict-prototypes -Wtraditional -Wtraditional-conversion
-Wdeclaration-after-statement -Wpointer-sign
</pre>
<br><dt><em>Debugging Options</em><dd>See <a href="Debugging-Options.html#Debugging-Options">Options for Debugging Your Program or GCC</a>.
<pre class="smallexample"> -d<var>letters</var> -dumpspecs -dumpmachine -dumpversion
-fsanitize=<var>style</var> -fsanitize-recover -fsanitize-recover=<var>style</var>
-fasan-shadow-offset=<var>number</var> -fsanitize-undefined-trap-on-error
-fcheck-pointer-bounds -fchkp-check-incomplete-type
-fchkp-first-field-has-own-bounds -fchkp-narrow-bounds
-fchkp-narrow-to-innermost-array -fchkp-optimize
-fchkp-use-fast-string-functions -fchkp-use-nochk-string-functions
-fchkp-use-static-bounds -fchkp-use-static-const-bounds
-fchkp-treat-zero-dynamic-size-as-infinite -fchkp-check-read
-fchkp-check-read -fchkp-check-write -fchkp-store-bounds
-fchkp-instrument-calls -fchkp-instrument-marked-only
-fchkp-use-wrappers
-fdbg-cnt-list -fdbg-cnt=<var>counter-value-list</var>
-fdisable-ipa-<var>pass_name</var>
-fdisable-rtl-<var>pass_name</var>
-fdisable-rtl-<var>pass-name</var>=<var>range-list</var>
-fdisable-tree-<var>pass_name</var>
-fdisable-tree-<var>pass-name</var>=<var>range-list</var>
-fdump-noaddr -fdump-unnumbered -fdump-unnumbered-links
-fdump-translation-unit<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-class-hierarchy<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-ipa-all -fdump-ipa-cgraph -fdump-ipa-inline
-fdump-passes
-fdump-statistics
-fdump-tree-all
-fdump-tree-original<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-optimized<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-cfg -fdump-tree-alias
-fdump-tree-ch
-fdump-tree-ssa<span class="roman">[</span>-<var>n</var><span class="roman">]</span> -fdump-tree-pre<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-ccp<span class="roman">[</span>-<var>n</var><span class="roman">]</span> -fdump-tree-dce<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-gimple<span class="roman">[</span>-raw<span class="roman">]</span>
-fdump-tree-dom<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-dse<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-phiprop<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-phiopt<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-forwprop<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-copyrename<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-nrv -fdump-tree-vect
-fdump-tree-sink
-fdump-tree-sra<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-forwprop<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-fre<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-vtable-verify
-fdump-tree-vrp<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-tree-storeccp<span class="roman">[</span>-<var>n</var><span class="roman">]</span>
-fdump-final-insns=<var>file</var>
-fcompare-debug<span class="roman">[</span>=<var>opts</var><span class="roman">]</span> -fcompare-debug-second
-feliminate-dwarf2-dups -fno-eliminate-unused-debug-types
-feliminate-unused-debug-symbols -femit-class-debug-always
-fenable-<var>kind</var>-<var>pass</var>
-fenable-<var>kind</var>-<var>pass</var>=<var>range-list</var>
-fdebug-types-section -fmem-report-wpa
-fmem-report -fpre-ipa-mem-report -fpost-ipa-mem-report -fprofile-arcs
-fopt-info
-fopt-info-<var>options</var><span class="roman">[</span>=<var>file</var><span class="roman">]</span>
-frandom-seed=<var>string</var> -fsched-verbose=<var>n</var>
-fsel-sched-verbose -fsel-sched-dump-cfg -fsel-sched-pipelining-verbose
-fstack-usage -ftest-coverage -ftime-report -fvar-tracking
-fvar-tracking-assignments -fvar-tracking-assignments-toggle
-g -g<var>level</var> -gtoggle -gcoff -gdwarf-<var>version</var>
-ggdb -grecord-gcc-switches -gno-record-gcc-switches
-gstabs -gstabs+ -gstrict-dwarf -gno-strict-dwarf
-gvms -gxcoff -gxcoff+ -gz<span class="roman">[</span>=<var>type</var><span class="roman">]</span>
-fno-merge-debug-strings -fno-dwarf2-cfi-asm
-fdebug-prefix-map=<var>old</var>=<var>new</var>
-femit-struct-debug-baseonly -femit-struct-debug-reduced
-femit-struct-debug-detailed<span class="roman">[</span>=<var>spec-list</var><span class="roman">]</span>
-p -pg -print-file-name=<var>library</var> -print-libgcc-file-name
-print-multi-directory -print-multi-lib -print-multi-os-directory
-print-prog-name=<var>program</var> -print-search-dirs -Q
-print-sysroot -print-sysroot-headers-suffix
-save-temps -save-temps=cwd -save-temps=obj -time<span class="roman">[</span>=<var>file</var><span class="roman">]</span>
</pre>
<br><dt><em>Optimization Options</em><dd>See <a href="Optimize-Options.html#Optimize-Options">Options that Control Optimization</a>.
<pre class="smallexample"> -faggressive-loop-optimizations -falign-functions[=<var>n</var>]
-falign-jumps[=<var>n</var>]
-falign-labels[=<var>n</var>] -falign-loops[=<var>n</var>]
-fassociative-math -fauto-profile -fauto-profile[=<var>path</var>]
-fauto-inc-dec -fbranch-probabilities
-fbranch-target-load-optimize -fbranch-target-load-optimize2
-fbtr-bb-exclusive -fcaller-saves
-fcheck-data-deps -fcombine-stack-adjustments -fconserve-stack
-fcompare-elim -fcprop-registers -fcrossjumping
-fcse-follow-jumps -fcse-skip-blocks -fcx-fortran-rules
-fcx-limited-range
-fdata-sections -fdce -fdelayed-branch
-fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively
-fdevirtualize-at-ltrans -fdse
-fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects
-ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=<var>style</var>
-fforward-propagate -ffp-contract=<var>style</var> -ffunction-sections
-fgcse -fgcse-after-reload -fgcse-las -fgcse-lm -fgraphite-identity
-fgcse-sm -fhoist-adjacent-loads -fif-conversion
-fif-conversion2 -findirect-inlining
-finline-functions -finline-functions-called-once -finline-limit=<var>n</var>
-finline-small-functions -fipa-cp -fipa-cp-clone -fipa-cp-alignment
-fipa-pta -fipa-profile -fipa-pure-const -fipa-reference -fipa-icf
-fira-algorithm=<var>algorithm</var>
-fira-region=<var>region</var> -fira-hoist-pressure
-fira-loop-pressure -fno-ira-share-save-slots
-fno-ira-share-spill-slots -fira-verbose=<var>n</var>
-fisolate-erroneous-paths-dereference -fisolate-erroneous-paths-attribute
-fivopts -fkeep-inline-functions -fkeep-static-consts
-flive-range-shrinkage
-floop-block -floop-interchange -floop-strip-mine
-floop-unroll-and-jam -floop-nest-optimize
-floop-parallelize-all -flra-remat -flto -flto-compression-level
-flto-partition=<var>alg</var> -flto-report -flto-report-wpa -fmerge-all-constants
-fmerge-constants -fmodulo-sched -fmodulo-sched-allow-regmoves
-fmove-loop-invariants -fno-branch-count-reg
-fno-defer-pop -fno-function-cse -fno-guess-branch-probability
-fno-inline -fno-math-errno -fno-peephole -fno-peephole2
-fno-sched-interblock -fno-sched-spec -fno-signed-zeros
-fno-toplevel-reorder -fno-trapping-math -fno-zero-initialized-in-bss
-fomit-frame-pointer -foptimize-sibling-calls
-fpartial-inlining -fpeel-loops -fpredictive-commoning
-fprefetch-loop-arrays -fprofile-report
-fprofile-correction -fprofile-dir=<var>path</var> -fprofile-generate
-fprofile-generate=<var>path</var>
-fprofile-use -fprofile-use=<var>path</var> -fprofile-values
-fprofile-reorder-functions
-freciprocal-math -free -frename-registers -freorder-blocks
-freorder-blocks-and-partition -freorder-functions
-frerun-cse-after-loop -freschedule-modulo-scheduled-loops
-frounding-math -fsched2-use-superblocks -fsched-pressure
-fsched-spec-load -fsched-spec-load-dangerous
-fsched-stalled-insns-dep[=<var>n</var>] -fsched-stalled-insns[=<var>n</var>]
-fsched-group-heuristic -fsched-critical-path-heuristic
-fsched-spec-insn-heuristic -fsched-rank-heuristic
-fsched-last-insn-heuristic -fsched-dep-count-heuristic
-fschedule-fusion
-fschedule-insns -fschedule-insns2 -fsection-anchors
-fselective-scheduling -fselective-scheduling2
-fsel-sched-pipelining -fsel-sched-pipelining-outer-loops
-fsemantic-interposition
-fshrink-wrap -fsignaling-nans -fsingle-precision-constant
-fsplit-ivs-in-unroller -fsplit-wide-types -fssa-phiopt
-fstack-protector -fstack-protector-all -fstack-protector-strong
-fstack-protector-explicit -fstdarg-opt -fstrict-aliasing
-fstrict-overflow -fthread-jumps -ftracer -ftree-bit-ccp
-ftree-builtin-call-dce -ftree-ccp -ftree-ch
-ftree-coalesce-inline-vars -ftree-coalesce-vars -ftree-copy-prop
-ftree-copyrename -ftree-dce -ftree-dominator-opts -ftree-dse
-ftree-forwprop -ftree-fre -ftree-loop-if-convert
-ftree-loop-if-convert-stores -ftree-loop-im
-ftree-phiprop -ftree-loop-distribution -ftree-loop-distribute-patterns
-ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize
-ftree-loop-vectorize
-ftree-parallelize-loops=<var>n</var> -ftree-pre -ftree-partial-pre -ftree-pta
-ftree-reassoc -ftree-sink -ftree-slsr -ftree-sra
-ftree-switch-conversion -ftree-tail-merge -ftree-ter
-ftree-vectorize -ftree-vrp
-funit-at-a-time -funroll-all-loops -funroll-loops
-funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops
-fipa-ra -fvariable-expansion-in-unroller -fvect-cost-model -fvpt
-fweb -fwhole-program -fwpa -fuse-linker-plugin
--param <var>name</var>=<var>value</var>
-O -O0 -O1 -O2 -O3 -Os -Ofast -Og
</pre>
<br><dt><em>Preprocessor Options</em><dd>See <a href="Preprocessor-Options.html#Preprocessor-Options">Options Controlling the Preprocessor</a>.
<pre class="smallexample"> -A<var>question</var>=<var>answer</var>
-A-<var>question</var><span class="roman">[</span>=<var>answer</var><span class="roman">]</span>
-C -dD -dI -dM -dN
-D<var>macro</var><span class="roman">[</span>=<var>defn</var><span class="roman">]</span> -E -H
-idirafter <var>dir</var>
-include <var>file</var> -imacros <var>file</var>
-iprefix <var>file</var> -iwithprefix <var>dir</var>
-iwithprefixbefore <var>dir</var> -isystem <var>dir</var>
-imultilib <var>dir</var> -isysroot <var>dir</var>
-M -MM -MF -MG -MP -MQ -MT -nostdinc
-P -fdebug-cpp -ftrack-macro-expansion -fworking-directory
-remap -trigraphs -undef -U<var>macro</var>
-Wp,<var>option</var> -Xpreprocessor <var>option</var> -no-integrated-cpp
</pre>
<br><dt><em>Assembler Option</em><dd>See <a href="Assembler-Options.html#Assembler-Options">Passing Options to the Assembler</a>.
<pre class="smallexample"> -Wa,<var>option</var> -Xassembler <var>option</var>
</pre>
<br><dt><em>Linker Options</em><dd>See <a href="Link-Options.html#Link-Options">Options for Linking</a>.
<pre class="smallexample"> <var>object-file-name</var> -fuse-ld=<var>linker</var> -l<var>library</var>
-nostartfiles -nodefaultlibs -nostdlib -pie -rdynamic
-s -static -static-libgcc -static-libstdc++
-static-libasan -static-libtsan -static-liblsan -static-libubsan
-static-libmpx -static-libmpxwrappers
-shared -shared-libgcc -symbolic
-T <var>script</var> -Wl,<var>option</var> -Xlinker <var>option</var>
-u <var>symbol</var> -z <var>keyword</var>
</pre>
<br><dt><em>Directory Options</em><dd>See <a href="Directory-Options.html#Directory-Options">Options for Directory Search</a>.
<pre class="smallexample"> -B<var>prefix</var> -I<var>dir</var> -iplugindir=<var>dir</var>
-iquote<var>dir</var> -L<var>dir</var> -specs=<var>file</var> -I-
--sysroot=<var>dir</var> --no-sysroot-suffix
</pre>
<br><dt><em>Machine Dependent Options</em><dd>See <a href="Submodel-Options.html#Submodel-Options">Hardware Models and Configurations</a>.
<!-- This list is ordered alphanumerically by subsection name. -->
<!-- Try and put the significant identifier (CPU or system) first, -->
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<p><em>AArch64 Options</em>
<pre class="smallexample"> -mabi=<var>name</var> -mbig-endian -mlittle-endian
-mgeneral-regs-only
-mcmodel=tiny -mcmodel=small -mcmodel=large
-mstrict-align
-momit-leaf-frame-pointer -mno-omit-leaf-frame-pointer
-mtls-dialect=desc -mtls-dialect=traditional
-mfix-cortex-a53-835769 -mno-fix-cortex-a53-835769
-mfix-cortex-a53-843419 -mno-fix-cortex-a53-843419
-march=<var>name</var> -mcpu=<var>name</var> -mtune=<var>name</var>
</pre>
<p><em>Adapteva Epiphany Options</em>
<pre class="smallexample"> -mhalf-reg-file -mprefer-short-insn-regs
-mbranch-cost=<var>num</var> -mcmove -mnops=<var>num</var> -msoft-cmpsf
-msplit-lohi -mpost-inc -mpost-modify -mstack-offset=<var>num</var>
-mround-nearest -mlong-calls -mshort-calls -msmall16
-mfp-mode=<var>mode</var> -mvect-double -max-vect-align=<var>num</var>
-msplit-vecmove-early -m1reg-<var>reg</var>
</pre>
<p><em>ARC Options</em>
<pre class="smallexample"> -mbarrel-shifter
-mcpu=<var>cpu</var> -mA6 -mARC600 -mA7 -mARC700
-mdpfp -mdpfp-compact -mdpfp-fast -mno-dpfp-lrsr
-mea -mno-mpy -mmul32x16 -mmul64
-mnorm -mspfp -mspfp-compact -mspfp-fast -msimd -msoft-float -mswap
-mcrc -mdsp-packa -mdvbf -mlock -mmac-d16 -mmac-24 -mrtsc -mswape
-mtelephony -mxy -misize -mannotate-align -marclinux -marclinux_prof
-mepilogue-cfi -mlong-calls -mmedium-calls -msdata
-mucb-mcount -mvolatile-cache
-malign-call -mauto-modify-reg -mbbit-peephole -mno-brcc
-mcase-vector-pcrel -mcompact-casesi -mno-cond-exec -mearly-cbranchsi
-mexpand-adddi -mindexed-loads -mlra -mlra-priority-none
-mlra-priority-compact mlra-priority-noncompact -mno-millicode
-mmixed-code -mq-class -mRcq -mRcw -msize-level=<var>level</var>
-mtune=<var>cpu</var> -mmultcost=<var>num</var> -munalign-prob-threshold=<var>probability</var>
</pre>
<p><em>ARM Options</em>
<pre class="smallexample"> -mapcs-frame -mno-apcs-frame
-mabi=<var>name</var>
-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
-mfloat-abi=<var>name</var>
-mfp16-format=<var>name</var>
-mthumb-interwork -mno-thumb-interwork
-mcpu=<var>name</var> -march=<var>name</var> -mfpu=<var>name</var>
-mtune=<var>name</var> -mprint-tune-info
-mstructure-size-boundary=<var>n</var>
-mabort-on-noreturn
-mlong-calls -mno-long-calls
-msingle-pic-base -mno-single-pic-base
-mpic-register=<var>reg</var>
-mnop-fun-dllimport
-mpoke-function-name
-mthumb -marm
-mtpcs-frame -mtpcs-leaf-frame
-mcaller-super-interworking -mcallee-super-interworking
-mtp=<var>name</var> -mtls-dialect=<var>dialect</var>
-mword-relocations
-mfix-cortex-m3-ldrd
-munaligned-access
-mneon-for-64bits
-mslow-flash-data
-masm-syntax-unified
-mrestrict-it
</pre>
<p><em>AVR Options</em>
<pre class="smallexample"> -mmcu=<var>mcu</var> -mabsdata -maccumulate-args
-mbranch-cost=<var>cost</var>
-mcall-prologues -mint8 -mn_flash=<var>size</var> -mno-interrupts
-mrelax -mrmw -mstrict-X -mtiny-stack -mfract-convert-truncate
-mshort-calls -nodevicelib
-Waddr-space-convert -Wmisspelled-isr
</pre>
<p><em>Blackfin Options</em>
<pre class="smallexample"> -mcpu=<var>cpu</var><span class="roman">[</span>-<var>sirevision</var><span class="roman">]</span>
-msim -momit-leaf-frame-pointer -mno-omit-leaf-frame-pointer
-mspecld-anomaly -mno-specld-anomaly -mcsync-anomaly -mno-csync-anomaly
-mlow-64k -mno-low64k -mstack-check-l1 -mid-shared-library
-mno-id-shared-library -mshared-library-id=<var>n</var>
-mleaf-id-shared-library -mno-leaf-id-shared-library
-msep-data -mno-sep-data -mlong-calls -mno-long-calls
-mfast-fp -minline-plt -mmulticore -mcorea -mcoreb -msdram
-micplb
</pre>
<p><em>C6X Options</em>
<pre class="smallexample"> -mbig-endian -mlittle-endian -march=<var>cpu</var>
-msim -msdata=<var>sdata-type</var>
</pre>
<p><em>CRIS Options</em>
<pre class="smallexample"> -mcpu=<var>cpu</var> -march=<var>cpu</var> -mtune=<var>cpu</var>
-mmax-stack-frame=<var>n</var> -melinux-stacksize=<var>n</var>
-metrax4 -metrax100 -mpdebug -mcc-init -mno-side-effects
-mstack-align -mdata-align -mconst-align
-m32-bit -m16-bit -m8-bit -mno-prologue-epilogue -mno-gotplt
-melf -maout -melinux -mlinux -sim -sim2
-mmul-bug-workaround -mno-mul-bug-workaround
</pre>
<p><em>CR16 Options</em>
<pre class="smallexample"> -mmac
-mcr16cplus -mcr16c
-msim -mint32 -mbit-ops
-mdata-model=<var>model</var>
</pre>
<p><em>Darwin Options</em>
<pre class="smallexample"> -all_load -allowable_client -arch -arch_errors_fatal
-arch_only -bind_at_load -bundle -bundle_loader
-client_name -compatibility_version -current_version
-dead_strip
-dependency-file -dylib_file -dylinker_install_name
-dynamic -dynamiclib -exported_symbols_list
-filelist -flat_namespace -force_cpusubtype_ALL
-force_flat_namespace -headerpad_max_install_names
-iframework
-image_base -init -install_name -keep_private_externs
-multi_module -multiply_defined -multiply_defined_unused
-noall_load -no_dead_strip_inits_and_terms
-nofixprebinding -nomultidefs -noprebind -noseglinkedit
-pagezero_size -prebind -prebind_all_twolevel_modules
-private_bundle -read_only_relocs -sectalign
-sectobjectsymbols -whyload -seg1addr
-sectcreate -sectobjectsymbols -sectorder
-segaddr -segs_read_only_addr -segs_read_write_addr
-seg_addr_table -seg_addr_table_filename -seglinkedit
-segprot -segs_read_only_addr -segs_read_write_addr
-single_module -static -sub_library -sub_umbrella
-twolevel_namespace -umbrella -undefined
-unexported_symbols_list -weak_reference_mismatches
-whatsloaded -F -gused -gfull -mmacosx-version-min=<var>version</var>
-mkernel -mone-byte-bool
</pre>
<p><em>DEC Alpha Options</em>
<pre class="smallexample"> -mno-fp-regs -msoft-float
-mieee -mieee-with-inexact -mieee-conformant
-mfp-trap-mode=<var>mode</var> -mfp-rounding-mode=<var>mode</var>
-mtrap-precision=<var>mode</var> -mbuild-constants
-mcpu=<var>cpu-type</var> -mtune=<var>cpu-type</var>
-mbwx -mmax -mfix -mcix
-mfloat-vax -mfloat-ieee
-mexplicit-relocs -msmall-data -mlarge-data
-msmall-text -mlarge-text
-mmemory-latency=<var>time</var>
</pre>
<p><em>FR30 Options</em>
<pre class="smallexample"> -msmall-model -mno-lsim
</pre>
<p><em>FRV Options</em>
<pre class="smallexample"> -mgpr-32 -mgpr-64 -mfpr-32 -mfpr-64
-mhard-float -msoft-float
-malloc-cc -mfixed-cc -mdword -mno-dword
-mdouble -mno-double
-mmedia -mno-media -mmuladd -mno-muladd
-mfdpic -minline-plt -mgprel-ro -multilib-library-pic
-mlinked-fp -mlong-calls -malign-labels
-mlibrary-pic -macc-4 -macc-8
-mpack -mno-pack -mno-eflags -mcond-move -mno-cond-move
-moptimize-membar -mno-optimize-membar
-mscc -mno-scc -mcond-exec -mno-cond-exec
-mvliw-branch -mno-vliw-branch
-mmulti-cond-exec -mno-multi-cond-exec -mnested-cond-exec
-mno-nested-cond-exec -mtomcat-stats
-mTLS -mtls
-mcpu=<var>cpu</var>
</pre>
<p><em>GNU/Linux Options</em>
<pre class="smallexample"> -mglibc -muclibc -mbionic -mandroid
-tno-android-cc -tno-android-ld
</pre>
<p><em>H8/300 Options</em>
<pre class="smallexample"> -mrelax -mh -ms -mn -mexr -mno-exr -mint32 -malign-300
</pre>
<p><em>HPPA Options</em>
<pre class="smallexample"> -march=<var>architecture-type</var>
-mdisable-fpregs -mdisable-indexing
-mfast-indirect-calls -mgas -mgnu-ld -mhp-ld
-mfixed-range=<var>register-range</var>
-mjump-in-delay -mlinker-opt -mlong-calls
-mlong-load-store -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-regs -msoft-float -mpa-risc-1-0
-mpa-risc-1-1 -mpa-risc-2-0 -mportable-runtime
-mschedule=<var>cpu-type</var> -mspace-regs -msio -mwsio
-munix=<var>unix-std</var> -nolibdld -static -threads
</pre>
<p><em>IA-64 Options</em>
<pre class="smallexample"> -mbig-endian -mlittle-endian -mgnu-as -mgnu-ld -mno-pic
-mvolatile-asm-stop -mregister-names -msdata -mno-sdata
-mconstant-gp -mauto-pic -mfused-madd
-minline-float-divide-min-latency
-minline-float-divide-max-throughput
-mno-inline-float-divide
-minline-int-divide-min-latency
-minline-int-divide-max-throughput
-mno-inline-int-divide
-minline-sqrt-min-latency -minline-sqrt-max-throughput
-mno-inline-sqrt
-mdwarf2-asm -mearly-stop-bits
-mfixed-range=<var>register-range</var> -mtls-size=<var>tls-size</var>
-mtune=<var>cpu-type</var> -milp32 -mlp64
-msched-br-data-spec -msched-ar-data-spec -msched-control-spec
-msched-br-in-data-spec -msched-ar-in-data-spec -msched-in-control-spec
-msched-spec-ldc -msched-spec-control-ldc
-msched-prefer-non-data-spec-insns -msched-prefer-non-control-spec-insns
-msched-stop-bits-after-every-cycle -msched-count-spec-in-critical-path
-msel-sched-dont-check-control-spec -msched-fp-mem-deps-zero-cost
-msched-max-memory-insns-hard-limit -msched-max-memory-insns=<var>max-insns</var>
</pre>
<p><em>LM32 Options</em>
<pre class="smallexample"> -mbarrel-shift-enabled -mdivide-enabled -mmultiply-enabled
-msign-extend-enabled -muser-enabled
</pre>
<p><em>M32R/D Options</em>
<pre class="smallexample"> -m32r2 -m32rx -m32r
-mdebug
-malign-loops -mno-align-loops
-missue-rate=<var>number</var>
-mbranch-cost=<var>number</var>
-mmodel=<var>code-size-model-type</var>
-msdata=<var>sdata-type</var>
-mno-flush-func -mflush-func=<var>name</var>
-mno-flush-trap -mflush-trap=<var>number</var>
-G <var>num</var>
</pre>
<p><em>M32C Options</em>
<pre class="smallexample"> -mcpu=<var>cpu</var> -msim -memregs=<var>number</var>
</pre>
<p><em>M680x0 Options</em>
<pre class="smallexample"> -march=<var>arch</var> -mcpu=<var>cpu</var> -mtune=<var>tune</var>
-m68000 -m68020 -m68020-40 -m68020-60 -m68030 -m68040
-m68060 -mcpu32 -m5200 -m5206e -m528x -m5307 -m5407
-mcfv4e -mbitfield -mno-bitfield -mc68000 -mc68020
-mnobitfield -mrtd -mno-rtd -mdiv -mno-div -mshort
-mno-short -mhard-float -m68881 -msoft-float -mpcrel
-malign-int -mstrict-align -msep-data -mno-sep-data
-mshared-library-id=n -mid-shared-library -mno-id-shared-library
-mxgot -mno-xgot
</pre>
<p><em>MCore Options</em>
<pre class="smallexample"> -mhardlit -mno-hardlit -mdiv -mno-div -mrelax-immediates
-mno-relax-immediates -mwide-bitfields -mno-wide-bitfields
-m4byte-functions -mno-4byte-functions -mcallgraph-data
-mno-callgraph-data -mslow-bytes -mno-slow-bytes -mno-lsim
-mlittle-endian -mbig-endian -m210 -m340 -mstack-increment
</pre>
<p><em>MeP Options</em>
<pre class="smallexample"> -mabsdiff -mall-opts -maverage -mbased=<var>n</var> -mbitops
-mc=<var>n</var> -mclip -mconfig=<var>name</var> -mcop -mcop32 -mcop64 -mivc2
-mdc -mdiv -meb -mel -mio-volatile -ml -mleadz -mm -mminmax
-mmult -mno-opts -mrepeat -ms -msatur -msdram -msim -msimnovec -mtf
-mtiny=<var>n</var>
</pre>
<p><em>MicroBlaze Options</em>
<pre class="smallexample"> -msoft-float -mhard-float -msmall-divides -mcpu=<var>cpu</var>
-mmemcpy -mxl-soft-mul -mxl-soft-div -mxl-barrel-shift
-mxl-pattern-compare -mxl-stack-check -mxl-gp-opt -mno-clearbss
-mxl-multiply-high -mxl-float-convert -mxl-float-sqrt
-mbig-endian -mlittle-endian -mxl-reorder -mxl-mode-<var>app-model</var>
</pre>
<p><em>MIPS Options</em>
<pre class="smallexample"> -EL -EB -march=<var>arch</var> -mtune=<var>arch</var>
-mips1 -mips2 -mips3 -mips4 -mips32 -mips32r2 -mips32r3 -mips32r5
-mips32r6 -mips64 -mips64r2 -mips64r3 -mips64r5 -mips64r6
-mips16 -mno-mips16 -mflip-mips16
-minterlink-compressed -mno-interlink-compressed
-minterlink-mips16 -mno-interlink-mips16
-mabi=<var>abi</var> -mabicalls -mno-abicalls
-mshared -mno-shared -mplt -mno-plt -mxgot -mno-xgot
-mgp32 -mgp64 -mfp32 -mfpxx -mfp64 -mhard-float -msoft-float
-mno-float -msingle-float -mdouble-float
-modd-spreg -mno-odd-spreg
-mabs=<var>mode</var> -mnan=<var>encoding</var>
-mdsp -mno-dsp -mdspr2 -mno-dspr2
-mmcu -mmno-mcu
-meva -mno-eva
-mvirt -mno-virt
-mxpa -mno-xpa
-mmicromips -mno-micromips
-mfpu=<var>fpu-type</var>
-msmartmips -mno-smartmips
-mpaired-single -mno-paired-single -mdmx -mno-mdmx
-mips3d -mno-mips3d -mmt -mno-mt -mllsc -mno-llsc
-mlong64 -mlong32 -msym32 -mno-sym32
-G<var>num</var> -mlocal-sdata -mno-local-sdata
-mextern-sdata -mno-extern-sdata -mgpopt -mno-gopt
-membedded-data -mno-embedded-data
-muninit-const-in-rodata -mno-uninit-const-in-rodata
-mcode-readable=<var>setting</var>
-msplit-addresses -mno-split-addresses
-mexplicit-relocs -mno-explicit-relocs
-mcheck-zero-division -mno-check-zero-division
-mdivide-traps -mdivide-breaks
-mmemcpy -mno-memcpy -mlong-calls -mno-long-calls
-mmad -mno-mad -mimadd -mno-imadd -mfused-madd -mno-fused-madd -nocpp
-mfix-24k -mno-fix-24k
-mfix-r4000 -mno-fix-r4000 -mfix-r4400 -mno-fix-r4400
-mfix-r10000 -mno-fix-r10000 -mfix-rm7000 -mno-fix-rm7000
-mfix-vr4120 -mno-fix-vr4120
-mfix-vr4130 -mno-fix-vr4130 -mfix-sb1 -mno-fix-sb1
-mflush-func=<var>func</var> -mno-flush-func
-mbranch-cost=<var>num</var> -mbranch-likely -mno-branch-likely
-mfp-exceptions -mno-fp-exceptions
-mvr4130-align -mno-vr4130-align -msynci -mno-synci
-mrelax-pic-calls -mno-relax-pic-calls -mmcount-ra-address
</pre>
<p><em>MMIX Options</em>
<pre class="smallexample"> -mlibfuncs -mno-libfuncs -mepsilon -mno-epsilon -mabi=gnu
-mabi=mmixware -mzero-extend -mknuthdiv -mtoplevel-symbols
-melf -mbranch-predict -mno-branch-predict -mbase-addresses
-mno-base-addresses -msingle-exit -mno-single-exit
</pre>
<p><em>MN10300 Options</em>
<pre class="smallexample"> -mmult-bug -mno-mult-bug
-mno-am33 -mam33 -mam33-2 -mam34
-mtune=<var>cpu-type</var>
-mreturn-pointer-on-d0
-mno-crt0 -mrelax -mliw -msetlb
</pre>
<p><em>Moxie Options</em>
<pre class="smallexample"> -meb -mel -mmul.x -mno-crt0
</pre>
<p><em>MSP430 Options</em>
<pre class="smallexample"> -msim -masm-hex -mmcu= -mcpu= -mlarge -msmall -mrelax
-mhwmult= -minrt
</pre>
<p><em>NDS32 Options</em>
<pre class="smallexample"> -mbig-endian -mlittle-endian
-mreduced-regs -mfull-regs
-mcmov -mno-cmov
-mperf-ext -mno-perf-ext
-mv3push -mno-v3push
-m16bit -mno-16bit
-misr-vector-size=<var>num</var>
-mcache-block-size=<var>num</var>
-march=<var>arch</var>
-mcmodel=<var>code-model</var>
-mctor-dtor -mrelax
</pre>
<p><em>Nios II Options</em>
<pre class="smallexample"> -G <var>num</var> -mgpopt=<var>option</var> -mgpopt -mno-gpopt
-mel -meb
-mno-bypass-cache -mbypass-cache
-mno-cache-volatile -mcache-volatile
-mno-fast-sw-div -mfast-sw-div
-mhw-mul -mno-hw-mul -mhw-mulx -mno-hw-mulx -mno-hw-div -mhw-div
-mcustom-<var>insn</var>=<var>N</var> -mno-custom-<var>insn</var>
-mcustom-fpu-cfg=<var>name</var>
-mhal -msmallc -msys-crt0=<var>name</var> -msys-lib=<var>name</var>
</pre>
<p><em>Nvidia PTX Options</em>
<pre class="smallexample"> -m32 -m64 -mmainkernel
</pre>
<p><em>PDP-11 Options</em>
<pre class="smallexample"> -mfpu -msoft-float -mac0 -mno-ac0 -m40 -m45 -m10
-mbcopy -mbcopy-builtin -mint32 -mno-int16
-mint16 -mno-int32 -mfloat32 -mno-float64
-mfloat64 -mno-float32 -mabshi -mno-abshi
-mbranch-expensive -mbranch-cheap
-munix-asm -mdec-asm
</pre>
<p><em>picoChip Options</em>
<pre class="smallexample"> -mae=<var>ae_type</var> -mvliw-lookahead=<var>N</var>
-msymbol-as-address -mno-inefficient-warnings
</pre>
<p><em>PowerPC Options</em>
See RS/6000 and PowerPC Options.
<p><em>RL78 Options</em>
<pre class="smallexample"> -msim -mmul=none -mmul=g13 -mmul=rl78
-m64bit-doubles -m32bit-doubles
</pre>
<p><em>RS/6000 and PowerPC Options</em>
<pre class="smallexample"> -mcpu=<var>cpu-type</var>
-mtune=<var>cpu-type</var>
-mcmodel=<var>code-model</var>
-mpowerpc64
-maltivec -mno-altivec
-mpowerpc-gpopt -mno-powerpc-gpopt
-mpowerpc-gfxopt -mno-powerpc-gfxopt
-mmfcrf -mno-mfcrf -mpopcntb -mno-popcntb -mpopcntd -mno-popcntd
-mfprnd -mno-fprnd
-mcmpb -mno-cmpb -mmfpgpr -mno-mfpgpr -mhard-dfp -mno-hard-dfp
-mfull-toc -mminimal-toc -mno-fp-in-toc -mno-sum-in-toc
-m64 -m32 -mxl-compat -mno-xl-compat -mpe
-malign-power -malign-natural
-msoft-float -mhard-float -mmultiple -mno-multiple
-msingle-float -mdouble-float -msimple-fpu
-mstring -mno-string -mupdate -mno-update
-mavoid-indexed-addresses -mno-avoid-indexed-addresses
-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
-mdynamic-no-pic -maltivec -mswdiv -msingle-pic-base
-mprioritize-restricted-insns=<var>priority</var>
-msched-costly-dep=<var>dependence_type</var>
-minsert-sched-nops=<var>scheme</var>
-mcall-sysv -mcall-netbsd
-maix-struct-return -msvr4-struct-return
-mabi=<var>abi-type</var> -msecure-plt -mbss-plt
-mblock-move-inline-limit=<var>num</var>
-misel -mno-isel
-misel=yes -misel=no
-mspe -mno-spe
-mspe=yes -mspe=no
-mpaired
-mgen-cell-microcode -mwarn-cell-microcode
-mvrsave -mno-vrsave
-mmulhw -mno-mulhw
-mdlmzb -mno-dlmzb
-mfloat-gprs=yes -mfloat-gprs=no -mfloat-gprs=single -mfloat-gprs=double
-mprototype -mno-prototype
-msim -mmvme -mads -myellowknife -memb -msdata
-msdata=<var>opt</var> -mvxworks -G <var>num</var> -pthread
-mrecip -mrecip=<var>opt</var> -mno-recip -mrecip-precision
-mno-recip-precision
-mveclibabi=<var>type</var> -mfriz -mno-friz
-mpointers-to-nested-functions -mno-pointers-to-nested-functions
-msave-toc-indirect -mno-save-toc-indirect
-mpower8-fusion -mno-mpower8-fusion -mpower8-vector -mno-power8-vector
-mcrypto -mno-crypto -mdirect-move -mno-direct-move
-mquad-memory -mno-quad-memory
-mquad-memory-atomic -mno-quad-memory-atomic
-mcompat-align-parm -mno-compat-align-parm
-mupper-regs-df -mno-upper-regs-df -mupper-regs-sf -mno-upper-regs-sf
-mupper-regs -mno-upper-regs
</pre>
<p><em>RX Options</em>
<pre class="smallexample"> -m64bit-doubles -m32bit-doubles -fpu -nofpu
-mcpu=
-mbig-endian-data -mlittle-endian-data
-msmall-data
-msim -mno-sim
-mas100-syntax -mno-as100-syntax
-mrelax
-mmax-constant-size=
-mint-register=
-mpid
-mno-warn-multiple-fast-interrupts
-msave-acc-in-interrupts
</pre>
<p><em>S/390 and zSeries Options</em>
<pre class="smallexample"> -mtune=<var>cpu-type</var> -march=<var>cpu-type</var>
-mhard-float -msoft-float -mhard-dfp -mno-hard-dfp
-mlong-double-64 -mlong-double-128
-mbackchain -mno-backchain -mpacked-stack -mno-packed-stack
-msmall-exec -mno-small-exec -mmvcle -mno-mvcle
-m64 -m31 -mdebug -mno-debug -mesa -mzarch
-mtpf-trace -mno-tpf-trace -mfused-madd -mno-fused-madd
-mwarn-framesize -mwarn-dynamicstack -mstack-size -mstack-guard
-mhotpatch=<var>halfwords</var>,<var>halfwords</var>
</pre>
<p><em>Score Options</em>
<pre class="smallexample"> -meb -mel
-mnhwloop
-muls
-mmac
-mscore5 -mscore5u -mscore7 -mscore7d
</pre>
<p><em>SH Options</em>
<pre class="smallexample"> -m1 -m2 -m2e
-m2a-nofpu -m2a-single-only -m2a-single -m2a
-m3 -m3e
-m4-nofpu -m4-single-only -m4-single -m4
-m4a-nofpu -m4a-single-only -m4a-single -m4a -m4al
-m5-64media -m5-64media-nofpu
-m5-32media -m5-32media-nofpu
-m5-compact -m5-compact-nofpu
-mb -ml -mdalign -mrelax
-mbigtable -mfmovd -mhitachi -mrenesas -mno-renesas -mnomacsave
-mieee -mno-ieee -mbitops -misize -minline-ic_invalidate -mpadstruct
-mspace -mprefergot -musermode -multcost=<var>number</var> -mdiv=<var>strategy</var>
-mdivsi3_libfunc=<var>name</var> -mfixed-range=<var>register-range</var>
-mindexed-addressing -mgettrcost=<var>number</var> -mpt-fixed
-maccumulate-outgoing-args -minvalid-symbols
-matomic-model=<var>atomic-model</var>
-mbranch-cost=<var>num</var> -mzdcbranch -mno-zdcbranch
-mcbranch-force-delay-slot
-mfused-madd -mno-fused-madd -mfsca -mno-fsca -mfsrra -mno-fsrra
-mpretend-cmove -mtas
</pre>
<p><em>Solaris 2 Options</em>
<pre class="smallexample"> -mclear-hwcap -mno-clear-hwcap -mimpure-text -mno-impure-text
-pthreads -pthread
</pre>
<p><em>SPARC Options</em>
<pre class="smallexample"> -mcpu=<var>cpu-type</var>
-mtune=<var>cpu-type</var>
-mcmodel=<var>code-model</var>
-mmemory-model=<var>mem-model</var>
-m32 -m64 -mapp-regs -mno-app-regs
-mfaster-structs -mno-faster-structs -mflat -mno-flat
-mfpu -mno-fpu -mhard-float -msoft-float
-mhard-quad-float -msoft-quad-float
-mstack-bias -mno-stack-bias
-munaligned-doubles -mno-unaligned-doubles
-muser-mode -mno-user-mode
-mv8plus -mno-v8plus -mvis -mno-vis
-mvis2 -mno-vis2 -mvis3 -mno-vis3
-mcbcond -mno-cbcond
-mfmaf -mno-fmaf -mpopc -mno-popc
-mfix-at697f -mfix-ut699
</pre>
<p><em>SPU Options</em>
<pre class="smallexample"> -mwarn-reloc -merror-reloc
-msafe-dma -munsafe-dma
-mbranch-hints
-msmall-mem -mlarge-mem -mstdmain
-mfixed-range=<var>register-range</var>
-mea32 -mea64
-maddress-space-conversion -mno-address-space-conversion
-mcache-size=<var>cache-size</var>
-matomic-updates -mno-atomic-updates
</pre>
<p><em>System V Options</em>
<pre class="smallexample"> -Qy -Qn -YP,<var>paths</var> -Ym,<var>dir</var>
</pre>
<p><em>TILE-Gx Options</em>
<pre class="smallexample"> -mcpu=CPU -m32 -m64 -mbig-endian -mlittle-endian
-mcmodel=<var>code-model</var>
</pre>
<p><em>TILEPro Options</em>
<pre class="smallexample"> -mcpu=<var>cpu</var> -m32
</pre>
<p><em>V850 Options</em>
<pre class="smallexample"> -mlong-calls -mno-long-calls -mep -mno-ep
-mprolog-function -mno-prolog-function -mspace
-mtda=<var>n</var> -msda=<var>n</var> -mzda=<var>n</var>
-mapp-regs -mno-app-regs
-mdisable-callt -mno-disable-callt
-mv850e2v3 -mv850e2 -mv850e1 -mv850es
-mv850e -mv850 -mv850e3v5
-mloop
-mrelax
-mlong-jumps
-msoft-float
-mhard-float
-mgcc-abi
-mrh850-abi
-mbig-switch
</pre>
<p><em>VAX Options</em>
<pre class="smallexample"> -mg -mgnu -munix
</pre>
<p><em>Visium Options</em>
<pre class="smallexample"> -mdebug -msim -mfpu -mno-fpu -mhard-float -msoft-float
-mcpu=<var>cpu-type</var> -mtune=<var>cpu-type</var> -msv-mode -muser-mode
</pre>
<p><em>VMS Options</em>
<pre class="smallexample"> -mvms-return-codes -mdebug-main=<var>prefix</var> -mmalloc64
-mpointer-size=<var>size</var>
</pre>
<p><em>VxWorks Options</em>
<pre class="smallexample"> -mrtp -non-static -Bstatic -Bdynamic
-Xbind-lazy -Xbind-now
</pre>
<p><em>x86 Options</em>
<pre class="smallexample"> -mtune=<var>cpu-type</var> -march=<var>cpu-type</var>
-mtune-ctrl=<var>feature-list</var> -mdump-tune-features -mno-default
-mfpmath=<var>unit</var>
-masm=<var>dialect</var> -mno-fancy-math-387
-mno-fp-ret-in-387 -msoft-float
-mno-wide-multiply -mrtd -malign-double
-mpreferred-stack-boundary=<var>num</var>
-mincoming-stack-boundary=<var>num</var>
-mcld -mcx16 -msahf -mmovbe -mcrc32
-mrecip -mrecip=<var>opt</var>
-mvzeroupper -mprefer-avx128
-mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mavx
-mavx2 -mavx512f -mavx512pf -mavx512er -mavx512cd -msha
-maes -mpclmul -mfsgsbase -mrdrnd -mf16c -mfma -mprefetchwt1
-mclflushopt -mxsavec -mxsaves
-msse4a -m3dnow -mpopcnt -mabm -mbmi -mtbm -mfma4 -mxop -mlzcnt
-mbmi2 -mfxsr -mxsave -mxsaveopt -mrtm -mlwp -mmpx -mmwaitx -mthreads
-mno-align-stringops -minline-all-stringops
-minline-stringops-dynamically -mstringop-strategy=<var>alg</var>
-mmemcpy-strategy=<var>strategy</var> -mmemset-strategy=<var>strategy</var>
-mpush-args -maccumulate-outgoing-args -m128bit-long-double
-m96bit-long-double -mlong-double-64 -mlong-double-80 -mlong-double-128
-mregparm=<var>num</var> -msseregparm
-mveclibabi=<var>type</var> -mvect8-ret-in-mem
-mpc32 -mpc64 -mpc80 -mstackrealign
-momit-leaf-frame-pointer -mno-red-zone -mno-tls-direct-seg-refs
-mcmodel=<var>code-model</var> -mabi=<var>name</var> -maddress-mode=<var>mode</var>
-m32 -m64 -mx32 -m16 -mlarge-data-threshold=<var>num</var>
-msse2avx -mfentry -mrecord-mcount -mnop-mcount -m8bit-idiv
-mavx256-split-unaligned-load -mavx256-split-unaligned-store
-malign-data=<var>type</var> -mstack-protector-guard=<var>guard</var>
</pre>
<p><em>x86 Windows Options</em>
<pre class="smallexample"> -mconsole -mcygwin -mno-cygwin -mdll
-mnop-fun-dllimport -mthread
-municode -mwin32 -mwindows -fno-set-stack-executable
</pre>
<p><em>Xstormy16 Options</em>
<pre class="smallexample"> -msim
</pre>
<p><em>Xtensa Options</em>
<pre class="smallexample"> -mconst16 -mno-const16
-mfused-madd -mno-fused-madd
-mforce-no-pic
-mserialize-volatile -mno-serialize-volatile
-mtext-section-literals -mno-text-section-literals
-mtarget-align -mno-target-align
-mlongcalls -mno-longcalls
</pre>
<p><em>zSeries Options</em>
See S/390 and zSeries Options.
<br><dt><em>Code Generation Options</em><dd>See <a href="Code-Gen-Options.html#Code-Gen-Options">Options for Code Generation Conventions</a>.
<pre class="smallexample"> -fcall-saved-<var>reg</var> -fcall-used-<var>reg</var>
-ffixed-<var>reg</var> -fexceptions
-fnon-call-exceptions -fdelete-dead-exceptions -funwind-tables
-fasynchronous-unwind-tables
-fno-gnu-unique
-finhibit-size-directive -finstrument-functions
-finstrument-functions-exclude-function-list=<var>sym</var>,<var>sym</var>,...
-finstrument-functions-exclude-file-list=<var>file</var>,<var>file</var>,...
-fno-common -fno-ident
-fpcc-struct-return -fpic -fPIC -fpie -fPIE
-fno-jump-tables
-frecord-gcc-switches
-freg-struct-return -fshort-enums
-fshort-double -fshort-wchar
-fverbose-asm -fpack-struct[=<var>n</var>] -fstack-check
-fstack-limit-register=<var>reg</var> -fstack-limit-symbol=<var>sym</var>
-fno-stack-limit -fsplit-stack
-fleading-underscore -ftls-model=<var>model</var>
-fstack-reuse=<var>reuse_level</var>
-ftrapv -fwrapv -fbounds-check
-fvisibility=<span class="roman">[</span>default<span class="roman">|</span>internal<span class="roman">|</span>hidden<span class="roman">|</span>protected<span class="roman">]</span>
-fstrict-volatile-bitfields -fsync-libcalls
</pre>
</dl>
</body></html>