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Next:&nbsp;<a rel="next" accesskey="n" href="Overall-Options.html#Overall-Options">Overall Options</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>  -combine  -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>
</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> 
          -fno-asm  -fno-builtin  -fno-builtin-<var>function</var> 
          -fhosted  -ffreestanding -fopenmp -fms-extensions 
          -trigraphs  -no-integrated-cpp  -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 
          -fconserve-space  -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  -fno-operator-names 
          -fno-optional-diags  -fpermissive 
          -fno-pretty-templates 
          -frepo  -fno-rtti  -fstats  -ftemplate-depth=<var>n</var> 
          -fno-threadsafe-statics -fuse-cxa-atexit  -fno-weak  -nostdinc++ 
          -fno-default-inline  -fvisibility-inlines-hidden 
          -fvisibility-ms-compat 
          -Wabi  -Wconversion-null  -Wctor-dtor-privacy 
          -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-call-cxx-cdtors 
          -fobjc-direct-dispatch 
          -fobjc-exceptions 
          -fobjc-gc 
          -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-show-option
</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  -pedantic  -pedantic-errors 
          -w  -Wextra  -Wall  -Waddress  -Waggregate-return  -Warray-bounds 
          -Wno-attributes -Wno-builtin-macro-redefined 
          -Wc++-compat -Wc++0x-compat -Wcast-align  -Wcast-qual  
          -Wchar-subscripts -Wclobbered  -Wcomment 
          -Wconversion  -Wcoverage-mismatch  -Wno-deprecated  
          -Wno-deprecated-declarations -Wdisabled-optimization  
          -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-y2k 
          -Wframe-larger-than=<var>len</var> -Wjump-misses-init -Wignored-qualifiers 
          -Wimplicit  -Wimplicit-function-declaration  -Wimplicit-int 
          -Winit-self  -Winline 
          -Wno-int-to-pointer-cast -Wno-invalid-offsetof 
          -Winvalid-pch -Wlarger-than=<var>len</var>  -Wunsafe-loop-optimizations 
          -Wlogical-op -Wlong-long 
          -Wmain  -Wmissing-braces  -Wmissing-field-initializers 
          -Wmissing-format-attribute  -Wmissing-include-dirs 
          -Wmissing-noreturn  -Wno-mudflap 
          -Wno-multichar  -Wnonnull  -Wno-overflow 
          -Woverlength-strings  -Wpacked  -Wpacked-bitfield-compat  -Wpadded 
          -Wparentheses  -Wpedantic-ms-format -Wno-pedantic-ms-format 
          -Wpointer-arith  -Wno-pointer-to-int-cast 
          -Wno-poison-system-directories 
          -Wredundant-decls 
          -Wreturn-type  -Wsequence-point  -Wshadow 
          -Wsign-compare  -Wsign-conversion  -Wstack-protector 
          -Wstrict-aliasing -Wstrict-aliasing=n 
          -Wstrict-overflow -Wstrict-overflow=<var>n</var> 
          -Wswitch  -Wswitch-default  -Wswitch-enum -Wsync-nand 
          -Wsystem-headers  -Wtrigraphs  -Wtype-limits  -Wundef  -Wuninitialized 
          -Wunknown-pragmas  -Wno-pragmas 
          -Wunsuffixed-float-constants  -Wunused  -Wunused-function 
          -Wunused-label  -Wunused-parameter -Wno-unused-result -Wunused-value  -Wunused-variable 
          -Wvariadic-macros -Wvla 
          -Wvolatile-register-var  -Wwrite-strings
</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 
          -fdbg-cnt-list -fdbg-cnt=<var>counter-value-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-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-vcg -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-mudflap<span class="roman">[</span>-<var>n</var><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-vrp<span class="roman">[</span>-<var>n</var><span class="roman">]</span> 
          -ftree-vectorizer-verbose=<var>n</var> 
          -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 -feliminate-unused-debug-types 
          -feliminate-unused-debug-symbols -femit-class-debug-always 
          -fenable-icf-debug 
          -fmem-report -fpre-ipa-mem-report -fpost-ipa-mem-report -fprofile-arcs 
          -frandom-seed=<var>string</var> -fsched-verbose=<var>n</var> 
          -fsel-sched-verbose -fsel-sched-dump-cfg -fsel-sched-pipelining-verbose 
          -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  -gstabs  -gstabs+  -gstrict-dwarf  -gno-strict-dwarf 
          -gvms  -gxcoff  -gxcoff+ 
          -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">          -falign-arrays -falign-functions[=<var>n</var>] -falign-jumps[=<var>n</var>] 
          -falign-labels[=<var>n</var>] -falign-loops[=<var>n</var>] -fassociative-math 
          -fauto-inc-dec -fbranch-probabilities -fbranch-target-load-optimize 
          -fbranch-target-load-optimize2 -fbtr-bb-exclusive -fcaller-saves 
          -fcheck-data-deps -fconserve-stack -fcprop-registers -fcrossjumping 
          -fcse-follow-jumps -fcse-skip-blocks -fcx-fortran-rules -fcx-limited-range 
          -fdata-sections -fdce -fdce 
          -fdelayed-branch -fdelete-null-pointer-checks -fdse -fdse 
          -fearly-inlining -fipa-sra -fexpensive-optimizations -ffast-math 
          -ffinite-math-only -ffloat-store -fexcess-precision=<var>style</var> 
          -fforward-propagate -ffunction-sections 
          -fgcse -fgcse-after-reload -fgcse-las -fgcse-lm 
          -fgcse-sm -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-matrix-reorg -fipa-pta 
          -fipa-pure-const -fipa-reference -fipa-struct-reorg 
          -fipa-type-escape -fira-algorithm=<var>algorithm</var> 
          -fira-region=<var>region</var> -fira-coalesce 
          -fira-loop-pressure -fno-ira-share-save-slots 
          -fno-ira-share-spill-slots -fira-verbose=<var>n</var> 
          -fivopts -fkeep-inline-functions -fkeep-static-consts 
          -floop-block -floop-interchange -floop-strip-mine -fgraphite-identity 
          -floop-parallelize-all -flto -flto-compression-level -flto-report -fltrans 
          -fltrans-output-list -fmerge-all-constants -fmerge-constants -fmodulo-sched 
          -fmodulo-sched-allow-regmoves -fmove-loop-invariants -fmudflap 
          -fmudflapir -fmudflapth -fno-branch-count-reg -fno-default-inline 
          -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-register-move -foptimize-sibling-calls 
          -fpeel-loops -fpredictive-commoning -fprefetch-loop-arrays 
          -fprofile-correction -fprofile-dir=<var>path</var> -fprofile-generate 
          -fprofile-generate=<var>path</var> 
          -fprofile-use -fprofile-use=<var>path</var> -fprofile-values 
          -freciprocal-math -fregmove -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-insns -fschedule-insns2 -fsection-anchors 
          -fselective-scheduling -fselective-scheduling2 
          -fsel-sched-pipelining -fsel-sched-pipelining-outer-loops 
          -fsignaling-nans -fsingle-precision-constant -fsplit-ivs-in-unroller 
          -fsplit-wide-types -fstack-protector -fstack-protector-all 
          -fstrict-aliasing -fstrict-overflow -fthread-jumps -ftracer 
          -ftree-builtin-call-dce -ftree-ccp -ftree-ch -ftree-copy-prop 
          -ftree-copyrename -ftree-dce 
          -ftree-dominator-opts -ftree-dse -ftree-forwprop -ftree-fre 
          -ftree-if-to-switch-conversion -ftree-loop-im 
          -ftree-phiprop -ftree-loop-distribution 
          -ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize 
          -ftree-parallelize-loops=<var>n</var> -ftree-pre -ftree-pta -ftree-reassoc 
          -ftree-sink -ftree-sra -ftree-switch-conversion 
          -ftree-ter -ftree-vect-loop-version -ftree-vectorize -ftree-vrp 
          -funit-at-a-time -funroll-all-loops -funroll-loops 
          -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops 
          -fvariable-expansion-in-unroller -fvect-cost-model -fvpt -fweb 
          -fwhole-program -fwhopr -fwpa -fuse-linker-plugin 
          --param <var>name</var>=<var>value</var>
          -O  -O0  -O1  -O2  -O3  -Os
</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  -fworking-directory  -remap 
          -trigraphs  -undef  -U<var>macro</var>  -Wp,<var>option</var> 
          -Xpreprocessor <var>option</var>
</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>  -l<var>library</var> 
          -nostartfiles  -nodefaultlibs  -nostdlib -pie -rdynamic 
          -s  -static  -static-libgcc  -static-libstdc++ -shared  
          -shared-libgcc  -symbolic 
          -T <var>script</var>  -Wl,<var>option</var>  -Xlinker <var>option</var> 
          -u <var>symbol</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>  -iquote<var>dir</var>  -L<var>dir</var>
          -specs=<var>file</var>  -I- --sysroot=<var>dir</var>
</pre>
     <br><dt><em>Target Options</em><dd><!-- I wrote this xref this way to avoid overfull hbox. - rms -->
See <a href="Target-Options.html#Target-Options">Target Options</a>.
     <pre class="smallexample">          -V <var>version</var>  -b <var>machine</var>
</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, -->
<!-- so users have a clue at guessing where the ones they want will be. -->

     <p><em>ARC Options</em>
     <pre class="smallexample">          -EB  -EL 
          -mmangle-cpu  -mcpu=<var>cpu</var>  -mtext=<var>text-section</var> 
          -mdata=<var>data-section</var>  -mrodata=<var>readonly-data-section</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  -mwords-little-endian 
          -mfloat-abi=<var>name</var>  -msoft-float  -mhard-float  -mfpe 
          -mfp16-format=<var>name</var>
          -mthumb-interwork  -mno-thumb-interwork 
          -mcpu=<var>name</var>  -march=<var>name</var>  -mfpu=<var>name</var>  
          -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 
          -mcirrus-fix-invalid-insns -mno-cirrus-fix-invalid-insns 
          -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> 
          -mlow-irq-latency 
          -mword-relocations 
          -mfix-cortex-m3-ldrd
</pre>
     <p><em>AVR Options</em>
     <pre class="smallexample">          -mmcu=<var>mcu</var>  -mno-interrupts 
          -mcall-prologues  -mtiny-stack  -mint8
</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>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>CRX Options</em>
     <pre class="smallexample">          -mmac -mpush-args
</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  -malpha-as  -mgas 
          -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>DEC Alpha/VMS Options</em>
     <pre class="smallexample">          -mvms-return-codes -mdebug-main=<var>prefix</var> -mmalloc64
</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">          -muclibc
</pre>
     <p><em>H8/300 Options</em>
     <pre class="smallexample">          -mrelax  -mh  -ms  -mn  -mint32  -malign-300
</pre>
     <p><em>HPPA Options</em>
     <pre class="smallexample">          -march=<var>architecture-type</var> 
          -mbig-switch  -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-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-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>i386 and x86-64 Options</em>
     <pre class="smallexample">          -mtune=<var>cpu-type</var>  -march=<var>cpu-type</var> 
          -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 
          -mmmx  -msse  -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -msse4 -mavx 
          -maes -mpclmul -mfused-madd 
          -msse4a -m3dnow -mpopcnt -mabm -mfma4 -mxop -mlwp 
          -mthreads  -mno-align-stringops  -minline-all-stringops 
          -minline-stringops-dynamically -mstringop-strategy=<var>alg</var> 
          -mpush-args  -maccumulate-outgoing-args  -m128bit-long-double 
          -m96bit-long-double  -mregparm=<var>num</var>  -msseregparm 
          -mveclibabi=<var>type</var> -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> 
          -m32  -m64 -mlarge-data-threshold=<var>num</var> 
          -msse2avx
</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>IA-64/VMS Options</em>
     <pre class="smallexample">          -mvms-return-codes -mdebug-main=<var>prefix</var> -mmalloc64
</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>M68hc1x Options</em>
     <pre class="smallexample">          -m6811  -m6812  -m68hc11  -m68hc12   -m68hcs12 
          -mauto-incdec  -minmax  -mlong-calls  -mshort 
          -msoft-reg-count=<var>count</var>
</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>MIPS Options</em>
     <pre class="smallexample">          -EL  -EB  -march=<var>arch</var>  -mtune=<var>arch</var> 
          -mips1  -mips2  -mips3  -mips4  -mips32  -mips32r2 
          -mips64  -mips64r2 
          -mips16  -mips16e  -mno-mips16  -mflip-mips16 
          -minterlink-mips16  -mno-interlink-mips16 
          -mabi=<var>abi</var>  -mabicalls  -mno-abicalls 
          -mshared  -mno-shared  -mplt  -mno-plt  -mxgot  -mno-xgot 
          -mgp32  -mgp64  -mfp32  -mfp64  -mhard-float  -msoft-float 
          -msingle-float  -mdouble-float  -mdsp  -mno-dsp  -mdspr2  -mno-dspr2 
          -mmicromips -mno-micromips -mmcu -mmno-mcu 
          -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 
          -mjals -mno-jals 
          -mmad  -mno-mad  -mfused-madd  -mno-fused-madd  -nocpp 
          -mfix-r4000  -mno-fix-r4000  -mfix-r4400  -mno-fix-r4400 
          -mfix-r10000 -mno-fix-r10000  -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 
          -mam33  -mno-am33 
          -mam33-2  -mno-am33-2 
          -mreturn-pointer-on-d0 
          -mno-crt0  -mrelax
</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 
          -msplit  -mno-split  -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>RS/6000 and PowerPC Options</em>
     <pre class="smallexample">          -mcpu=<var>cpu-type</var> 
          -mtune=<var>cpu-type</var> 
          -mpower  -mno-power  -mpower2  -mno-power2 
          -mpowerpc  -mpowerpc64  -mno-powerpc 
          -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 
          -mnew-mnemonics  -mold-mnemonics 
          -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 
          -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
</pre>
     <p><em>RX Options</em>
     <pre class="smallexample">          -m64bit-doubles  -m32bit-doubles  -fpu  -nofpu
          -mcpu= -patch=
          -mbig-endian-data -mlittle-endian-data 
          -msmall-data 
          -msim  -mno-sim
          -mas100-syntax -mno-as100-syntax
          -mrelax
          -mmax-constant-size=
          -mint-register=
          -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
</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  -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> 
          -madjust-unroll -mindexed-addressing -mgettrcost=<var>number</var> -mpt-fixed 
          -minvalid-symbols
</pre>
     <p><em>SPARC Options</em>
     <pre class="smallexample">          -mcpu=<var>cpu-type</var> 
          -mtune=<var>cpu-type</var> 
          -mcmodel=<var>code-model</var> 
          -m32  -m64  -mapp-regs  -mno-app-regs 
          -mfaster-structs  -mno-faster-structs 
          -mfpu  -mno-fpu  -mhard-float  -msoft-float 
          -mhard-quad-float  -msoft-quad-float 
          -mimpure-text  -mno-impure-text  -mlittle-endian 
          -mstack-bias  -mno-stack-bias 
          -munaligned-doubles  -mno-unaligned-doubles 
          -mv8plus  -mno-v8plus  -mvis  -mno-vis
          -threads -pthreads -pthread
</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>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 
          -mv850e1 
          -mv850e 
          -mv850  -mbig-switch
</pre>
     <p><em>VAX Options</em>
     <pre class="smallexample">          -mg  -mgnu  -munix
</pre>
     <p><em>VxWorks Options</em>
     <pre class="smallexample">          -mrtp  -non-static  -Bstatic  -Bdynamic 
          -Xbind-lazy  -Xbind-now
</pre>
     <p><em>x86-64 Options</em>
See i386 and x86-64 Options.

     <p><em>i386 and x86-64 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 
          -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  -funwind-tables 
          -fasynchronous-unwind-tables 
          -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  -fargument-alias  -fargument-noalias 
          -fargument-noalias-global  -fargument-noalias-anything 
          -fleading-underscore  -ftls-model=<var>model</var> 
          -ftrapv  -fwrapv  -fbounds-check 
          -fvisibility -fstrict-volatile-bitfields
</pre>
     </dl>

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                         Also, getting dependency information for Make. 
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                        Where to find the compiler executable files. 
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