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  74. Next: <a href="Overall-Options.html#Overall-Options" accesskey="n" rel="next">Overall Options</a>, Up: <a href="Invoking-GCC.html#Invoking-GCC" accesskey="u" rel="up">Invoking GCC</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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    77. 

  77. <a name="Option-Summary-1"></a>
    78. 

  78. <h3 class="section">3.1 Option Summary</h3>
    79. 

  79. 

  80. <p>Here is a summary of all the options, grouped by type.  Explanations are
    81. 

  81. in the following sections.
    82. 

  82. </p>
    83. 

  83. <dl compact="compact">
    84. 

  84. <dt><em>Overall Options</em></dt>
    85. 

  85. <dd><p>See <a href="Overall-Options.html#Overall-Options">Options Controlling the Kind of Output</a>.
    86. 

  86. </p><div class="smallexample">
    87. 

  87. <pre class="smallexample">-c  -S  -E  -o <var>file</var>  -x <var>language</var>  
    88. 

  88. -v  -###  --help<span class="roman">[</span>=<var>class</var><span class="roman">[</span>,&hellip;<span class="roman">]]</span>  --target-help  --version 
    89. 

  89. -pass-exit-codes  -pipe  -specs=<var>file</var>  -wrapper  
    90. 

  90. @<var>file</var>  -fplugin=<var>file</var>  -fplugin-arg-<var>name</var>=<var>arg</var>  
    91. 

  91. -fdump-ada-spec<span class="roman">[</span>-slim<span class="roman">]</span>  -fada-spec-parent=<var>unit</var>  -fdump-go-spec=<var>file</var>
    92. 

  92. </pre></div>
    93. 

  93. 

  94. </dd>
    95. 

  95. <dt><em>C Language Options</em></dt>
    96. 

  96. <dd><p>See <a href="C-Dialect-Options.html#C-Dialect-Options">Options Controlling C Dialect</a>.
    97. 

  97. </p><div class="smallexample">
    98. 

  98. <pre class="smallexample">-ansi  -std=<var>standard</var>  -fgnu89-inline 
    99. 

  99. -fpermitted-flt-eval-methods=<var>standard</var> 
    100. 

  100. -aux-info <var>filename</var>  -fallow-parameterless-variadic-functions 
    101. 

  101. -fno-asm  -fno-builtin  -fno-builtin-<var>function</var>  -fgimple
    102. 

  102. -fhosted  -ffreestanding  -fopenacc  -fopenmp  -fopenmp-simd 
    103. 

  103. -fms-extensions  -fplan9-extensions  -fsso-struct=<var>endianness</var> 
    104. 

  104. -fallow-single-precision  -fcond-mismatch  -flax-vector-conversions 
    105. 

  105. -fsigned-bitfields  -fsigned-char 
    106. 

  106. -funsigned-bitfields  -funsigned-char
    107. 

  107. </pre></div>
    108. 

  108. 

  109. </dd>
    110. 

  110. <dt><em>C++ Language Options</em></dt>
    111. 

  111. <dd><p>See <a href="C_002b_002b-Dialect-Options.html#C_002b_002b-Dialect-Options">Options Controlling C++ Dialect</a>.
    112. 

  112. </p><div class="smallexample">
    113. 

  113. <pre class="smallexample">-fabi-version=<var>n</var>  -fno-access-control 
    114. 

  114. -faligned-new=<var>n</var>  -fargs-in-order=<var>n</var>  -fcheck-new 
    115. 

  115. -fconstexpr-depth=<var>n</var>  -fconstexpr-loop-limit=<var>n</var> 
    116. 

  116. -ffriend-injection 
    117. 

  117. -fno-elide-constructors 
    118. 

  118. -fno-enforce-eh-specs 
    119. 

  119. -ffor-scope  -fno-for-scope  -fno-gnu-keywords 
    120. 

  120. -fno-implicit-templates 
    121. 

  121. -fno-implicit-inline-templates 
    122. 

  122. -fno-implement-inlines  -fms-extensions 
    123. 

  123. -fnew-inheriting-ctors 
    124. 

  124. -fnew-ttp-matching 
    125. 

  125. -fno-nonansi-builtins  -fnothrow-opt  -fno-operator-names 
    126. 

  126. -fno-optional-diags  -fpermissive 
    127. 

  127. -fno-pretty-templates 
    128. 

  128. -frepo  -fno-rtti  -fsized-deallocation 
    129. 

  129. -ftemplate-backtrace-limit=<var>n</var> 
    130. 

  130. -ftemplate-depth=<var>n</var> 
    131. 

  131. -fno-threadsafe-statics  -fuse-cxa-atexit 
    132. 

  132. -fno-weak  -nostdinc++ 
    133. 

  133. -fvisibility-inlines-hidden 
    134. 

  134. -fvisibility-ms-compat 
    135. 

  135. -fext-numeric-literals 
    136. 

  136. -Wabi=<var>n</var>  -Wabi-tag  -Wconversion-null  -Wctor-dtor-privacy 
    137. 

  137. -Wdelete-non-virtual-dtor  -Wliteral-suffix  -Wmultiple-inheritance 
    138. 

  138. -Wnamespaces  -Wnarrowing 
    139. 

  139. -Wnoexcept  -Wnoexcept-type  -Wnon-virtual-dtor  -Wreorder  -Wregister 
    140. 

  140. -Weffc++  -Wstrict-null-sentinel  -Wtemplates 
    141. 

  141. -Wno-non-template-friend  -Wold-style-cast 
    142. 

  142. -Woverloaded-virtual  -Wno-pmf-conversions 
    143. 

  143. -Wsign-promo  -Wvirtual-inheritance
    144. 

  144. </pre></div>
    145. 

  145. 

  146. </dd>
    147. 

  147. <dt><em>Objective-C and Objective-C++ Language Options</em></dt>
    148. 

  148. <dd><p>See <a href="Objective_002dC-and-Objective_002dC_002b_002b-Dialect-Options.html#Objective_002dC-and-Objective_002dC_002b_002b-Dialect-Options">Options Controlling
    149. 

  149. Objective-C and Objective-C++ Dialects</a>.
    150. 

  150. </p><div class="smallexample">
    151. 

  151. <pre class="smallexample">-fconstant-string-class=<var>class-name</var> 
    152. 

  152. -fgnu-runtime  -fnext-runtime 
    153. 

  153. -fno-nil-receivers 
    154. 

  154. -fobjc-abi-version=<var>n</var> 
    155. 

  155. -fobjc-call-cxx-cdtors 
    156. 

  156. -fobjc-direct-dispatch 
    157. 

  157. -fobjc-exceptions 
    158. 

  158. -fobjc-gc 
    159. 

  159. -fobjc-nilcheck 
    160. 

  160. -fobjc-std=objc1 
    161. 

  161. -fno-local-ivars 
    162. 

  162. -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> 
    163. 

  163. -freplace-objc-classes 
    164. 

  164. -fzero-link 
    165. 

  165. -gen-decls 
    166. 

  166. -Wassign-intercept 
    167. 

  167. -Wno-protocol  -Wselector 
    168. 

  168. -Wstrict-selector-match 
    169. 

  169. -Wundeclared-selector
    170. 

  170. </pre></div>
    171. 

  171. 

  172. </dd>
    173. 

  173. <dt><em>Diagnostic Message Formatting Options</em></dt>
    174. 

  174. <dd><p>See <a href="Diagnostic-Message-Formatting-Options.html#Diagnostic-Message-Formatting-Options">Options to Control Diagnostic Messages Formatting</a>.
    175. 

  175. </p><div class="smallexample">
    176. 

  176. <pre class="smallexample">-fmessage-length=<var>n</var>  
    177. 

  177. -fdiagnostics-show-location=<span class="roman">[</span>once<span class="roman">|</span>every-line<span class="roman">]</span>  
    178. 

  178. -fdiagnostics-color=<span class="roman">[</span>auto<span class="roman">|</span>never<span class="roman">|</span>always<span class="roman">]</span>  
    179. 

  179. -fno-diagnostics-show-option  -fno-diagnostics-show-caret 
    180. 

  180. -fdiagnostics-parseable-fixits  -fdiagnostics-generate-patch 
    181. 

  181. -fno-show-column
    182. 

  182. </pre></div>
    183. 

  183. 

  184. </dd>
    185. 

  185. <dt><em>Warning Options</em></dt>
    186. 

  186. <dd><p>See <a href="Warning-Options.html#Warning-Options">Options to Request or Suppress Warnings</a>.
    187. 

  187. </p><div class="smallexample">
    188. 

  188. <pre class="smallexample">-fsyntax-only  -fmax-errors=<var>n</var>  -Wpedantic 
    189. 

  189. -pedantic-errors 
    190. 

  190. -w  -Wextra  -Wall  -Waddress  -Waggregate-return  -Waligned-new 
    191. 

  191. -Walloc-zero  -Walloc-size-larger-than=<var>n</var>
    192. 

  192. -Walloca  -Walloca-larger-than=<var>n</var> 
    193. 

  193. -Wno-aggressive-loop-optimizations  -Warray-bounds  -Warray-bounds=<var>n</var> 
    194. 

  194. -Wno-attributes  -Wbool-compare  -Wbool-operation 
    195. 

  195. -Wno-builtin-declaration-mismatch 
    196. 

  196. -Wno-builtin-macro-redefined  -Wc90-c99-compat  -Wc99-c11-compat 
    197. 

  197. -Wc++-compat  -Wc++11-compat  -Wc++14-compat  -Wcast-align  -Wcast-qual  
    198. 

  198. -Wchar-subscripts -Wchkp  -Wclobbered  -Wcomment  
    199. 

  199. -Wconditionally-supported  
    200. 

  200. -Wconversion  -Wcoverage-mismatch  -Wno-cpp  -Wdangling-else  -Wdate-time 
    201. 

  201. -Wdelete-incomplete 
    202. 

  202. -Wno-deprecated  -Wno-deprecated-declarations  -Wno-designated-init 
    203. 

  203. -Wdisabled-optimization 
    204. 

  204. -Wno-discarded-qualifiers  -Wno-discarded-array-qualifiers 
    205. 

  205. -Wno-div-by-zero  -Wdouble-promotion 
    206. 

  206. -Wduplicated-branches  -Wduplicated-cond 
    207. 

  207. -Wempty-body  -Wenum-compare  -Wno-endif-labels  -Wexpansion-to-defined 
    208. 

  208. -Werror  -Werror=*  -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 
    209. 

  209. -Wno-format-contains-nul  -Wno-format-extra-args  
    210. 

  210. -Wformat-nonliteral -Wformat-overflow=<var>n</var> 
    211. 

  211. -Wformat-security  -Wformat-signedness  -Wformat-truncation=<var>n</var> 
    212. 

  212. -Wformat-y2k  -Wframe-address 
    213. 

  213. -Wframe-larger-than=<var>len</var>  -Wno-free-nonheap-object  -Wjump-misses-init 
    214. 

  214. -Wignored-qualifiers  -Wignored-attributes  -Wincompatible-pointer-types 
    215. 

  215. -Wimplicit  -Wimplicit-fallthrough  -Wimplicit-fallthrough=<var>n</var> 
    216. 

  216. -Wimplicit-function-declaration  -Wimplicit-int 
    217. 

  217. -Winit-self  -Winline  -Wno-int-conversion  -Wint-in-bool-context 
    218. 

  218. -Wno-int-to-pointer-cast  -Winvalid-memory-model  -Wno-invalid-offsetof 
    219. 

  219. -Winvalid-pch  -Wlarger-than=<var>len</var> 
    220. 

  220. -Wlogical-op  -Wlogical-not-parentheses  -Wlong-long 
    221. 

  221. -Wmain  -Wmaybe-uninitialized  -Wmemset-elt-size  -Wmemset-transposed-args 
    222. 

  222. -Wmisleading-indentation  -Wmissing-braces 
    223. 

  223. -Wmissing-field-initializers  -Wmissing-include-dirs 
    224. 

  224. -Wno-multichar  -Wnonnull  -Wnonnull-compare 
    225. 

  225. -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> 
    226. 

  226. -Wnull-dereference  -Wodr  -Wno-overflow  -Wopenmp-simd  
    227. 

  227. -Woverride-init-side-effects  -Woverlength-strings 
    228. 

  228. -Wpacked  -Wpacked-bitfield-compat  -Wpadded 
    229. 

  229. -Wparentheses  -Wno-pedantic-ms-format 
    230. 

  230. -Wplacement-new  -Wplacement-new=<var>n</var> 
    231. 

  231. -Wpointer-arith  -Wpointer-compare  -Wno-pointer-to-int-cast 
    232. 

  232. -Wno-pragmas  -Wredundant-decls  -Wrestrict  -Wno-return-local-addr 
    233. 

  233. -Wreturn-type  -Wsequence-point  -Wshadow  -Wno-shadow-ivar 
    234. 

  234. -Wshadow=global,  -Wshadow=local,  -Wshadow=compatible-local 
    235. 

  235. -Wshift-overflow  -Wshift-overflow=<var>n</var> 
    236. 

  236. -Wshift-count-negative  -Wshift-count-overflow  -Wshift-negative-value 
    237. 

  237. -Wsign-compare  -Wsign-conversion  -Wfloat-conversion 
    238. 

  238. -Wno-scalar-storage-order 
    239. 

  239. -Wsizeof-pointer-memaccess  -Wsizeof-array-argument 
    240. 

  240. -Wstack-protector  -Wstack-usage=<var>len</var>  -Wstrict-aliasing 
    241. 

  241. -Wstrict-aliasing=n  -Wstrict-overflow  -Wstrict-overflow=<var>n</var> 
    242. 

  242. -Wstringop-overflow=<var>n</var> 
    243. 

  243. -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> 
    244. 

  244. -Wsuggest-final-types   -Wsuggest-final-methods  -Wsuggest-override 
    245. 

  245. -Wmissing-format-attribute  -Wsubobject-linkage 
    246. 

  246. -Wswitch  -Wswitch-bool  -Wswitch-default  -Wswitch-enum 
    247. 

  247. -Wswitch-unreachable  -Wsync-nand 
    248. 

  248. -Wsystem-headers  -Wtautological-compare  -Wtrampolines  -Wtrigraphs 
    249. 

  249. -Wtype-limits  -Wundef 
    250. 

  250. -Wuninitialized  -Wunknown-pragmas  -Wunsafe-loop-optimizations 
    251. 

  251. -Wunsuffixed-float-constants  -Wunused  -Wunused-function 
    252. 

  252. -Wunused-label  -Wunused-local-typedefs  -Wunused-macros 
    253. 

  253. -Wunused-parameter  -Wno-unused-result 
    254. 

  254. -Wunused-value  -Wunused-variable 
    255. 

  255. -Wunused-const-variable  -Wunused-const-variable=<var>n</var> 
    256. 

  256. -Wunused-but-set-parameter  -Wunused-but-set-variable 
    257. 

  257. -Wuseless-cast  -Wvariadic-macros  -Wvector-operation-performance 
    258. 

  258. -Wvla  -Wvla-larger-than=<var>n</var>  -Wvolatile-register-var  -Wwrite-strings 
    259. 

  259. -Wzero-as-null-pointer-constant  -Whsa
    260. 

  260. </pre></div>
    261. 

  261. 

  262. </dd>
    263. 

  263. <dt><em>C and Objective-C-only Warning Options</em></dt>
    264. 

  264. <dd><div class="smallexample">
    265. 

  265. <pre class="smallexample">-Wbad-function-cast  -Wmissing-declarations 
    266. 

  266. -Wmissing-parameter-type  -Wmissing-prototypes  -Wnested-externs 
    267. 

  267. -Wold-style-declaration  -Wold-style-definition 
    268. 

  268. -Wstrict-prototypes  -Wtraditional  -Wtraditional-conversion 
    269. 

  269. -Wdeclaration-after-statement  -Wpointer-sign
    270. 

  270. </pre></div>
    271. 

  271. 

  272. </dd>
    273. 

  273. <dt><em>Debugging Options</em></dt>
    274. 

  274. <dd><p>See <a href="Debugging-Options.html#Debugging-Options">Options for Debugging Your Program</a>.
    275. 

  275. </p><div class="smallexample">
    276. 

  276. <pre class="smallexample">-g  -g<var>level</var>  -gcoff  -gdwarf  -gdwarf-<var>version</var> 
    277. 

  277. -ggdb  -grecord-gcc-switches  -gno-record-gcc-switches 
    278. 

  278. -gstabs  -gstabs+  -gstrict-dwarf  -gno-strict-dwarf 
    279. 

  279. -gcolumn-info  -gno-column-info 
    280. 

  280. -gvms  -gxcoff  -gxcoff+  -gz<span class="roman">[</span>=<var>type</var><span class="roman">]</span> 
    281. 

  281. -fdebug-prefix-map=<var>old</var>=<var>new</var>  -fdebug-types-section 
    282. 

  282. -feliminate-dwarf2-dups  -fno-eliminate-unused-debug-types 
    283. 

  283. -femit-struct-debug-baseonly  -femit-struct-debug-reduced 
    284. 

  284. -femit-struct-debug-detailed<span class="roman">[</span>=<var>spec-list</var><span class="roman">]</span> 
    285. 

  285. -feliminate-unused-debug-symbols  -femit-class-debug-always 
    286. 

  286. -fno-merge-debug-strings  -fno-dwarf2-cfi-asm 
    287. 

  287. -fvar-tracking  -fvar-tracking-assignments
    288. 

  288. </pre></div>
    289. 

  289. 

  290. </dd>
    291. 

  291. <dt><em>Optimization Options</em></dt>
    292. 

  292. <dd><p>See <a href="Optimize-Options.html#Optimize-Options">Options that Control Optimization</a>.
    293. 

  293. </p><div class="smallexample">
    294. 

  294. <pre class="smallexample">-faggressive-loop-optimizations  -falign-functions[=<var>n</var>] 
    295. 

  295. -falign-jumps[=<var>n</var>] 
    296. 

  296. -falign-labels[=<var>n</var>]  -falign-loops[=<var>n</var>] 
    297. 

  297. -fassociative-math  -fauto-profile  -fauto-profile[=<var>path</var>] 
    298. 

  298. -fauto-inc-dec  -fbranch-probabilities 
    299. 

  299. -fbranch-target-load-optimize  -fbranch-target-load-optimize2 
    300. 

  300. -fbtr-bb-exclusive  -fcaller-saves 
    301. 

  301. -fcombine-stack-adjustments  -fconserve-stack 
    302. 

  302. -fcompare-elim  -fcprop-registers  -fcrossjumping 
    303. 

  303. -fcse-follow-jumps  -fcse-skip-blocks  -fcx-fortran-rules 
    304. 

  304. -fcx-limited-range 
    305. 

  305. -fdata-sections  -fdce  -fdelayed-branch 
    306. 

  306. -fdelete-null-pointer-checks  -fdevirtualize  -fdevirtualize-speculatively 
    307. 

  307. -fdevirtualize-at-ltrans  -fdse 
    308. 

  308. -fearly-inlining  -fipa-sra  -fexpensive-optimizations  -ffat-lto-objects 
    309. 

  309. -ffast-math  -ffinite-math-only  -ffloat-store  -fexcess-precision=<var>style</var> 
    310. 

  310. -fforward-propagate  -ffp-contract=<var>style</var>  -ffunction-sections 
    311. 

  311. -fgcse  -fgcse-after-reload  -fgcse-las  -fgcse-lm  -fgraphite-identity 
    312. 

  312. -fgcse-sm  -fhoist-adjacent-loads  -fif-conversion 
    313. 

  313. -fif-conversion2  -findirect-inlining 
    314. 

  314. -finline-functions  -finline-functions-called-once  -finline-limit=<var>n</var> 
    315. 

  315. -finline-small-functions  -fipa-cp  -fipa-cp-clone 
    316. 

  316. -fipa-bit-cp -fipa-vrp 
    317. 

  317. -fipa-pta  -fipa-profile  -fipa-pure-const  -fipa-reference  -fipa-icf 
    318. 

  318. -fira-algorithm=<var>algorithm</var> 
    319. 

  319. -fira-region=<var>region</var>  -fira-hoist-pressure 
    320. 

  320. -fira-loop-pressure  -fno-ira-share-save-slots 
    321. 

  321. -fno-ira-share-spill-slots 
    322. 

  322. -fisolate-erroneous-paths-dereference  -fisolate-erroneous-paths-attribute 
    323. 

  323. -fivopts  -fkeep-inline-functions  -fkeep-static-functions 
    324. 

  324. -fkeep-static-consts  -flimit-function-alignment  -flive-range-shrinkage 
    325. 

  325. -floop-block  -floop-interchange  -floop-strip-mine 
    326. 

  326. -floop-unroll-and-jam  -floop-nest-optimize 
    327. 

  327. -floop-parallelize-all  -flra-remat  -flto  -flto-compression-level 
    328. 

  328. -flto-partition=<var>alg</var>  -fmerge-all-constants 
    329. 

  329. -fmerge-constants  -fmodulo-sched  -fmodulo-sched-allow-regmoves 
    330. 

  330. -fmove-loop-invariants  -fno-branch-count-reg 
    331. 

  331. -fno-defer-pop  -fno-fp-int-builtin-inexact  -fno-function-cse 
    332. 

  332. -fno-guess-branch-probability  -fno-inline  -fno-math-errno  -fno-peephole 
    333. 

  333. -fno-peephole2  -fno-printf-return-value  -fno-sched-interblock 
    334. 

  334. -fno-sched-spec  -fno-signed-zeros 
    335. 

  335. -fno-toplevel-reorder  -fno-trapping-math  -fno-zero-initialized-in-bss 
    336. 

  336. -fomit-frame-pointer  -foptimize-sibling-calls 
    337. 

  337. -fpartial-inlining  -fpeel-loops  -fpredictive-commoning 
    338. 

  338. -fprefetch-loop-arrays 
    339. 

  339. -fprofile-correction 
    340. 

  340. -fprofile-use  -fprofile-use=<var>path</var>  -fprofile-values 
    341. 

  341. -fprofile-reorder-functions 
    342. 

  342. -freciprocal-math  -free  -frename-registers  -freorder-blocks 
    343. 

  343. -freorder-blocks-algorithm=<var>algorithm</var> 
    344. 

  344. -freorder-blocks-and-partition  -freorder-functions 
    345. 

  345. -frerun-cse-after-loop  -freschedule-modulo-scheduled-loops 
    346. 

  346. -frounding-math  -fsched2-use-superblocks  -fsched-pressure 
    347. 

  347. -fsched-spec-load  -fsched-spec-load-dangerous 
    348. 

  348. -fsched-stalled-insns-dep[=<var>n</var>]  -fsched-stalled-insns[=<var>n</var>] 
    349. 

  349. -fsched-group-heuristic  -fsched-critical-path-heuristic 
    350. 

  350. -fsched-spec-insn-heuristic  -fsched-rank-heuristic 
    351. 

  351. -fsched-last-insn-heuristic  -fsched-dep-count-heuristic 
    352. 

  352. -fschedule-fusion 
    353. 

  353. -fschedule-insns  -fschedule-insns2  -fsection-anchors 
    354. 

  354. -fselective-scheduling  -fselective-scheduling2 
    355. 

  355. -fsel-sched-pipelining  -fsel-sched-pipelining-outer-loops 
    356. 

  356. -fsemantic-interposition  -fshrink-wrap  -fshrink-wrap-separate 
    357. 

  357. -fsignaling-nans 
    358. 

  358. -fsingle-precision-constant  -fsplit-ivs-in-unroller  -fsplit-loops
    359. 

  359. -fsplit-paths 
    360. 

  360. -fsplit-wide-types  -fssa-backprop  -fssa-phiopt 
    361. 

  361. -fstdarg-opt  -fstore-merging  -fstrict-aliasing 
    362. 

  362. -fstrict-overflow  -fthread-jumps  -ftracer  -ftree-bit-ccp 
    363. 

  363. -ftree-builtin-call-dce  -ftree-ccp  -ftree-ch 
    364. 

  364. -ftree-coalesce-vars  -ftree-copy-prop  -ftree-dce  -ftree-dominator-opts 
    365. 

  365. -ftree-dse  -ftree-forwprop  -ftree-fre  -fcode-hoisting 
    366. 

  366. -ftree-loop-if-convert  -ftree-loop-im 
    367. 

  367. -ftree-phiprop  -ftree-loop-distribution  -ftree-loop-distribute-patterns 
    368. 

  368. -ftree-loop-ivcanon  -ftree-loop-linear  -ftree-loop-optimize 
    369. 

  369. -ftree-loop-vectorize 
    370. 

  370. -ftree-parallelize-loops=<var>n</var>  -ftree-pre  -ftree-partial-pre  -ftree-pta 
    371. 

  371. -ftree-reassoc  -ftree-sink  -ftree-slsr  -ftree-sra 
    372. 

  372. -ftree-switch-conversion  -ftree-tail-merge 
    373. 

  373. -ftree-ter  -ftree-vectorize  -ftree-vrp  -funconstrained-commons 
    374. 

  374. -funit-at-a-time  -funroll-all-loops  -funroll-loops 
    375. 

  375. -funsafe-math-optimizations  -funswitch-loops 
    376. 

  376. -fipa-ra  -fvariable-expansion-in-unroller  -fvect-cost-model  -fvpt 
    377. 

  377. -fweb  -fwhole-program  -fwpa  -fuse-linker-plugin 
    378. 

  378. --param <var>name</var>=<var>value</var>
    379. 

  379. -O  -O0  -O1  -O2  -O3  -Os  -Ofast  -Og
    380. 

  380. </pre></div>
    381. 

  381. 

  382. </dd>
    383. 

  383. <dt><em>Program Instrumentation Options</em></dt>
    384. 

  384. <dd><p>See <a href="Instrumentation-Options.html#Instrumentation-Options">Program Instrumentation Options</a>.
    385. 

  385. </p><div class="smallexample">
    386. 

  386. <pre class="smallexample">-p  -pg  -fprofile-arcs  --coverage  -ftest-coverage 
    387. 

  387. -fprofile-dir=<var>path</var>  -fprofile-generate  -fprofile-generate=<var>path</var> 
    388. 

  388. -fsanitize=<var>style</var>  -fsanitize-recover  -fsanitize-recover=<var>style</var> 
    389. 

  389. -fasan-shadow-offset=<var>number</var>  -fsanitize-sections=<var>s1</var>,<var>s2</var>,... 
    390. 

  390. -fsanitize-undefined-trap-on-error  -fbounds-check 
    391. 

  391. -fcheck-pointer-bounds  -fchkp-check-incomplete-type 
    392. 

  392. -fchkp-first-field-has-own-bounds  -fchkp-narrow-bounds 
    393. 

  393. -fchkp-narrow-to-innermost-array  -fchkp-optimize 
    394. 

  394. -fchkp-use-fast-string-functions  -fchkp-use-nochk-string-functions 
    395. 

  395. -fchkp-use-static-bounds  -fchkp-use-static-const-bounds 
    396. 

  396. -fchkp-treat-zero-dynamic-size-as-infinite  -fchkp-check-read 
    397. 

  397. -fchkp-check-read  -fchkp-check-write  -fchkp-store-bounds 
    398. 

  398. -fchkp-instrument-calls  -fchkp-instrument-marked-only 
    399. 

  399. -fchkp-use-wrappers  -fchkp-flexible-struct-trailing-arrays
    400. 

  400. -fstack-protector  -fstack-protector-all  -fstack-protector-strong 
    401. 

  401. -fstack-protector-explicit  -fstack-check 
    402. 

  402. -fstack-limit-register=<var>reg</var>  -fstack-limit-symbol=<var>sym</var> 
    403. 

  403. -fno-stack-limit  -fsplit-stack 
    404. 

  404. -fvtable-verify=<span class="roman">[</span>std<span class="roman">|</span>preinit<span class="roman">|</span>none<span class="roman">]</span> 
    405. 

  405. -fvtv-counts  -fvtv-debug 
    406. 

  406. -finstrument-functions 
    407. 

  407. -finstrument-functions-exclude-function-list=<var>sym</var>,<var>sym</var>,&hellip; 
    408. 

  408. -finstrument-functions-exclude-file-list=<var>file</var>,<var>file</var>,&hellip;
    409. 

  409. </pre></div>
    410. 

  410. 

  411. </dd>
    412. 

  412. <dt><em>Preprocessor Options</em></dt>
    413. 

  413. <dd><p>See <a href="Preprocessor-Options.html#Preprocessor-Options">Options Controlling the Preprocessor</a>.
    414. 

  414. </p><div class="smallexample">
    415. 

  415. <pre class="smallexample">-A<var>question</var>=<var>answer</var> 
    416. 

  416. -A-<var>question</var><span class="roman">[</span>=<var>answer</var><span class="roman">]</span> 
    417. 

  417. -C  -CC  -D<var>macro</var><span class="roman">[</span>=<var>defn</var><span class="roman">]</span> 
    418. 

  418. -dD  -dI  -dM  -dN  -dU 
    419. 

  419. -fdebug-cpp  -fdirectives-only  -fdollars-in-identifiers  
    420. 

  420. -fexec-charset=<var>charset</var>  -fextended-identifiers  
    421. 

  421. -finput-charset=<var>charset</var>  -fno-canonical-system-headers 
    422. 

  422. -fpch-deps  -fpch-preprocess  -fpreprocessed 
    423. 

  423. -ftabstop=<var>width</var>  -ftrack-macro-expansion  
    424. 

  424. -fwide-exec-charset=<var>charset</var>  -fworking-directory 
    425. 

  425. -H  -imacros <var>file</var>  -include <var>file</var> 
    426. 

  426. -M  -MD  -MF  -MG  -MM  -MMD  -MP  -MQ  -MT 
    427. 

  427. -no-integrated-cpp  -P  -pthread  -remap 
    428. 

  428. -traditional  -traditional-cpp  -trigraphs 
    429. 

  429. -U<var>macro</var>  -undef  
    430. 

  430. -Wp,<var>option</var>  -Xpreprocessor <var>option</var>
    431. 

  431. </pre></div>
    432. 

  432. 

  433. </dd>
    434. 

  434. <dt><em>Assembler Options</em></dt>
    435. 

  435. <dd><p>See <a href="Assembler-Options.html#Assembler-Options">Passing Options to the Assembler</a>.
    436. 

  436. </p><div class="smallexample">
    437. 

  437. <pre class="smallexample">-Wa,<var>option</var>  -Xassembler <var>option</var>
    438. 

  438. </pre></div>
    439. 

  439. 

  440. </dd>
    441. 

  441. <dt><em>Linker Options</em></dt>
    442. 

  442. <dd><p>See <a href="Link-Options.html#Link-Options">Options for Linking</a>.
    443. 

  443. </p><div class="smallexample">
    444. 

  444. <pre class="smallexample"><var>object-file-name</var>  -fuse-ld=<var>linker</var>  -l<var>library</var> 
    445. 

  445. -nostartfiles  -nodefaultlibs  -nostdlib  -pie  -pthread  -rdynamic 
    446. 

  446. -s  -static  -static-libgcc  -static-libstdc++ 
    447. 

  447. -static-libasan  -static-libtsan  -static-liblsan  -static-libubsan 
    448. 

  448. -static-libmpx  -static-libmpxwrappers 
    449. 

  449. -shared  -shared-libgcc  -symbolic 
    450. 

  450. -T <var>script</var>  -Wl,<var>option</var>  -Xlinker <var>option</var> 
    451. 

  451. -u <var>symbol</var>  -z <var>keyword</var>
    452. 

  452. </pre></div>
    453. 

  453. 

  454. </dd>
    455. 

  455. <dt><em>Directory Options</em></dt>
    456. 

  456. <dd><p>See <a href="Directory-Options.html#Directory-Options">Options for Directory Search</a>.
    457. 

  457. </p><div class="smallexample">
    458. 

  458. <pre class="smallexample">-B<var>prefix</var>  -I<var>dir</var>  -I- 
    459. 

  459. -idirafter <var>dir</var> 
    460. 

  460. -imacros <var>file</var>  -imultilib <var>dir</var> 
    461. 

  461. -iplugindir=<var>dir</var>  -iprefix <var>file</var> 
    462. 

  462. -iquote <var>dir</var>  -isysroot <var>dir</var>  -isystem <var>dir</var> 
    463. 

  463. -iwithprefix <var>dir</var>  -iwithprefixbefore <var>dir</var>  
    464. 

  464. -L<var>dir</var>  -no-canonical-prefixes  --no-sysroot-suffix 
    465. 

  465. -nostdinc  -nostdinc++  --sysroot=<var>dir</var>
    466. 

  466. </pre></div>
    467. 

  467. 

  468. </dd>
    469. 

  469. <dt><em>Code Generation Options</em></dt>
    470. 

  470. <dd><p>See <a href="Code-Gen-Options.html#Code-Gen-Options">Options for Code Generation Conventions</a>.
    471. 

  471. </p><div class="smallexample">
    472. 

  472. <pre class="smallexample">-fcall-saved-<var>reg</var>  -fcall-used-<var>reg</var> 
    473. 

  473. -ffixed-<var>reg</var>  -fexceptions 
    474. 

  474. -fnon-call-exceptions  -fdelete-dead-exceptions  -funwind-tables 
    475. 

  475. -fasynchronous-unwind-tables 
    476. 

  476. -fno-gnu-unique 
    477. 

  477. -finhibit-size-directive  -fno-common  -fno-ident 
    478. 

  478. -fpcc-struct-return  -fpic  -fPIC  -fpie  -fPIE  -fno-plt 
    479. 

  479. -fno-jump-tables 
    480. 

  480. -frecord-gcc-switches 
    481. 

  481. -freg-struct-return  -fshort-enums  -fshort-wchar 
    482. 

  482. -fverbose-asm  -fpack-struct[=<var>n</var>]  
    483. 

  483. -fleading-underscore  -ftls-model=<var>model</var> 
    484. 

  484. -fstack-reuse=<var>reuse_level</var> 
    485. 

  485. -ftrampolines  -ftrapv  -fwrapv 
    486. 

  486. -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> 
    487. 

  487. -fstrict-volatile-bitfields  -fsync-libcalls
    488. 

  488. </pre></div>
    489. 

  489. 

  490. </dd>
    491. 

  491. <dt><em>Developer Options</em></dt>
    492. 

  492. <dd><p>See <a href="Developer-Options.html#Developer-Options">GCC Developer Options</a>.
    493. 

  493. </p><div class="smallexample">
    494. 

  494. <pre class="smallexample">-d<var>letters</var>  -dumpspecs  -dumpmachine  -dumpversion 
    495. 

  495. -dumpfullversion  -fchecking  -fchecking=<var>n</var>  -fdbg-cnt-list 
    496. 

  496. -fdbg-cnt=<var>counter-value-list</var> 
    497. 

  497. -fdisable-ipa-<var>pass_name</var> 
    498. 

  498. -fdisable-rtl-<var>pass_name</var> 
    499. 

  499. -fdisable-rtl-<var>pass-name</var>=<var>range-list</var> 
    500. 

  500. -fdisable-tree-<var>pass_name</var> 
    501. 

  501. -fdisable-tree-<var>pass-name</var>=<var>range-list</var> 
    502. 

  502. -fdump-noaddr  -fdump-unnumbered  -fdump-unnumbered-links 
    503. 

  503. -fdump-translation-unit<span class="roman">[</span>-<var>n</var><span class="roman">]</span> 
    504. 

  504. -fdump-class-hierarchy<span class="roman">[</span>-<var>n</var><span class="roman">]</span> 
    505. 

  505. -fdump-ipa-all  -fdump-ipa-cgraph  -fdump-ipa-inline 
    506. 

  506. -fdump-passes 
    507. 

  507. -fdump-rtl-<var>pass</var>  -fdump-rtl-<var>pass</var>=<var>filename</var> 
    508. 

  508. -fdump-statistics 
    509. 

  509. -fdump-final-insns<span class="roman">[</span>=<var>file</var><span class="roman">]</span>
    510. 

  510. -fdump-tree-all 
    511. 

  511. -fdump-tree-<var>switch</var> 
    512. 

  512. -fdump-tree-<var>switch</var>-<var>options</var> 
    513. 

  513. -fdump-tree-<var>switch</var>-<var>options</var>=<var>filename</var> 
    514. 

  514. -fcompare-debug<span class="roman">[</span>=<var>opts</var><span class="roman">]</span>  -fcompare-debug-second 
    515. 

  515. -fenable-<var>kind</var>-<var>pass</var> 
    516. 

  516. -fenable-<var>kind</var>-<var>pass</var>=<var>range-list</var> 
    517. 

  517. -fira-verbose=<var>n</var> 
    518. 

  518. -flto-report  -flto-report-wpa  -fmem-report-wpa 
    519. 

  519. -fmem-report  -fpre-ipa-mem-report  -fpost-ipa-mem-report 
    520. 

  520. -fopt-info  -fopt-info-<var>options</var><span class="roman">[</span>=<var>file</var><span class="roman">]</span> 
    521. 

  521. -fprofile-report 
    522. 

  522. -frandom-seed=<var>string</var>  -fsched-verbose=<var>n</var> 
    523. 

  523. -fsel-sched-verbose  -fsel-sched-dump-cfg  -fsel-sched-pipelining-verbose 
    524. 

  524. -fstats  -fstack-usage  -ftime-report  -ftime-report-details 
    525. 

  525. -fvar-tracking-assignments-toggle  -gtoggle 
    526. 

  526. -print-file-name=<var>library</var>  -print-libgcc-file-name 
    527. 

  527. -print-multi-directory  -print-multi-lib  -print-multi-os-directory 
    528. 

  528. -print-prog-name=<var>program</var>  -print-search-dirs  -Q 
    529. 

  529. -print-sysroot  -print-sysroot-headers-suffix 
    530. 

  530. -save-temps  -save-temps=cwd  -save-temps=obj  -time<span class="roman">[</span>=<var>file</var><span class="roman">]</span>
    531. 

  531. </pre></div>
    532. 

  532. 

  533. </dd>
    534. 

  534. <dt><em>Machine-Dependent Options</em></dt>
    535. 

  535. <dd><p>See <a href="Submodel-Options.html#Submodel-Options">Machine-Dependent Options</a>.
    536. 

  536. </p>
    537. 

  537. <p><em>AArch64 Options</em>
    538. 

  538. </p><div class="smallexample">
    539. 

  539. <pre class="smallexample">-mabi=<var>name</var>  -mbig-endian  -mlittle-endian 
    540. 

  540. -mgeneral-regs-only 
    541. 

  541. -mcmodel=tiny  -mcmodel=small  -mcmodel=large 
    542. 

  542. -mstrict-align 
    543. 

  543. -momit-leaf-frame-pointer 
    544. 

  544. -mtls-dialect=desc  -mtls-dialect=traditional 
    545. 

  545. -mtls-size=<var>size</var> 
    546. 

  546. -mfix-cortex-a53-835769  -mfix-cortex-a53-843419 
    547. 

  547. -mlow-precision-recip-sqrt  -mlow-precision-sqrt  -mlow-precision-div 
    548. 

  548. -mpc-relative-literal-loads 
    549. 

  549. -msign-return-address=<var>scope</var> 
    550. 

  550. -march=<var>name</var>  -mcpu=<var>name</var>  -mtune=<var>name</var>  -moverride=<var>string</var>
    551. 

  551. </pre></div>
    552. 

  552. 

  553. <p><em>Adapteva Epiphany Options</em>
    554. 

  554. </p><div class="smallexample">
    555. 

  555. <pre class="smallexample">-mhalf-reg-file  -mprefer-short-insn-regs 
    556. 

  556. -mbranch-cost=<var>num</var>  -mcmove  -mnops=<var>num</var>  -msoft-cmpsf 
    557. 

  557. -msplit-lohi  -mpost-inc  -mpost-modify  -mstack-offset=<var>num</var> 
    558. 

  558. -mround-nearest  -mlong-calls  -mshort-calls  -msmall16 
    559. 

  559. -mfp-mode=<var>mode</var>  -mvect-double  -max-vect-align=<var>num</var> 
    560. 

  560. -msplit-vecmove-early  -m1reg-<var>reg</var>
    561. 

  561. </pre></div>
    562. 

  562. 

  563. <p><em>ARC Options</em>
    564. 

  564. </p><div class="smallexample">
    565. 

  565. <pre class="smallexample">-mbarrel-shifter 
    566. 

  566. -mcpu=<var>cpu</var>  -mA6  -mARC600  -mA7  -mARC700 
    567. 

  567. -mdpfp  -mdpfp-compact  -mdpfp-fast  -mno-dpfp-lrsr 
    568. 

  568. -mea  -mno-mpy  -mmul32x16  -mmul64  -matomic 
    569. 

  569. -mnorm  -mspfp  -mspfp-compact  -mspfp-fast  -msimd  -msoft-float  -mswap 
    570. 

  570. -mcrc  -mdsp-packa  -mdvbf  -mlock  -mmac-d16  -mmac-24  -mrtsc  -mswape 
    571. 

  571. -mtelephony  -mxy  -misize  -mannotate-align  -marclinux  -marclinux_prof 
    572. 

  572. -mlong-calls  -mmedium-calls  -msdata 
    573. 

  573. -mvolatile-cache  -mtp-regno=<var>regno</var> 
    574. 

  574. -malign-call  -mauto-modify-reg  -mbbit-peephole  -mno-brcc 
    575. 

  575. -mcase-vector-pcrel  -mcompact-casesi  -mno-cond-exec  -mearly-cbranchsi 
    576. 

  576. -mexpand-adddi  -mindexed-loads  -mlra  -mlra-priority-none 
    577. 

  577. -mlra-priority-compact mlra-priority-noncompact  -mno-millicode 
    578. 

  578. -mmixed-code  -mq-class  -mRcq  -mRcw  -msize-level=<var>level</var> 
    579. 

  579. -mtune=<var>cpu</var>  -mmultcost=<var>num</var> 
    580. 

  580. -munalign-prob-threshold=<var>probability</var>  -mmpy-option=<var>multo</var> 
    581. 

  581. -mdiv-rem  -mcode-density  -mll64  -mfpu=<var>fpu</var>
    582. 

  582. </pre></div>
    583. 

  583. 

  584. <p><em>ARM Options</em>
    585. 

  585. </p><div class="smallexample">
    586. 

  586. <pre class="smallexample">-mapcs-frame  -mno-apcs-frame 
    587. 

  587. -mabi=<var>name</var> 
    588. 

  588. -mapcs-stack-check  -mno-apcs-stack-check 
    589. 

  589. -mapcs-reentrant  -mno-apcs-reentrant 
    590. 

  590. -msched-prolog  -mno-sched-prolog 
    591. 

  591. -mlittle-endian  -mbig-endian 
    592. 

  592. -mfloat-abi=<var>name</var> 
    593. 

  593. -mfp16-format=<var>name</var>
    594. 

  594. -mthumb-interwork  -mno-thumb-interwork 
    595. 

  595. -mcpu=<var>name</var>  -march=<var>name</var>  -mfpu=<var>name</var>  
    596. 

  596. -mtune=<var>name</var>  -mprint-tune-info 
    597. 

  597. -mstructure-size-boundary=<var>n</var> 
    598. 

  598. -mabort-on-noreturn 
    599. 

  599. -mlong-calls  -mno-long-calls 
    600. 

  600. -msingle-pic-base  -mno-single-pic-base 
    601. 

  601. -mpic-register=<var>reg</var> 
    602. 

  602. -mnop-fun-dllimport 
    603. 

  603. -mpoke-function-name 
    604. 

  604. -mthumb  -marm 
    605. 

  605. -mtpcs-frame  -mtpcs-leaf-frame 
    606. 

  606. -mcaller-super-interworking  -mcallee-super-interworking 
    607. 

  607. -mtp=<var>name</var>  -mtls-dialect=<var>dialect</var> 
    608. 

  608. -mword-relocations 
    609. 

  609. -mfix-cortex-m3-ldrd 
    610. 

  610. -munaligned-access 
    611. 

  611. -mneon-for-64bits 
    612. 

  612. -mslow-flash-data 
    613. 

  613. -masm-syntax-unified 
    614. 

  614. -mrestrict-it 
    615. 

  615. -mpure-code 
    616. 

  616. -mcmse
    617. 

  617. </pre></div>
    618. 

  618. 

  619. <p><em>AVR Options</em>
    620. 

  620. </p><div class="smallexample">
    621. 

  621. <pre class="smallexample">-mmcu=<var>mcu</var>  -mabsdata  -maccumulate-args 
    622. 

  622. -mbranch-cost=<var>cost</var> 
    623. 

  623. -mcall-prologues  -mint8  -mn_flash=<var>size</var>  -mno-interrupts 
    624. 

  624. -mrelax  -mrmw  -mstrict-X  -mtiny-stack  -mfract-convert-truncate 
    625. 

  625. -nodevicelib 
    626. 

  626. -Waddr-space-convert  -Wmisspelled-isr
    627. 

  627. </pre></div>
    628. 

  628. 

  629. <p><em>Blackfin Options</em>
    630. 

  630. </p><div class="smallexample">
    631. 

  631. <pre class="smallexample">-mcpu=<var>cpu</var><span class="roman">[</span>-<var>sirevision</var><span class="roman">]</span> 
    632. 

  632. -msim  -momit-leaf-frame-pointer  -mno-omit-leaf-frame-pointer 
    633. 

  633. -mspecld-anomaly  -mno-specld-anomaly  -mcsync-anomaly  -mno-csync-anomaly 
    634. 

  634. -mlow-64k  -mno-low64k  -mstack-check-l1  -mid-shared-library 
    635. 

  635. -mno-id-shared-library  -mshared-library-id=<var>n</var> 
    636. 

  636. -mleaf-id-shared-library  -mno-leaf-id-shared-library 
    637. 

  637. -msep-data  -mno-sep-data  -mlong-calls  -mno-long-calls 
    638. 

  638. -mfast-fp  -minline-plt  -mmulticore  -mcorea  -mcoreb  -msdram 
    639. 

  639. -micplb
    640. 

  640. </pre></div>
    641. 

  641. 

  642. <p><em>C6X Options</em>
    643. 

  643. </p><div class="smallexample">
    644. 

  644. <pre class="smallexample">-mbig-endian  -mlittle-endian  -march=<var>cpu</var> 
    645. 

  645. -msim  -msdata=<var>sdata-type</var>
    646. 

  646. </pre></div>
    647. 

  647. 

  648. <p><em>CRIS Options</em>
    649. 

  649. </p><div class="smallexample">
    650. 

  650. <pre class="smallexample">-mcpu=<var>cpu</var>  -march=<var>cpu</var>  -mtune=<var>cpu</var> 
    651. 

  651. -mmax-stack-frame=<var>n</var>  -melinux-stacksize=<var>n</var> 
    652. 

  652. -metrax4  -metrax100  -mpdebug  -mcc-init  -mno-side-effects 
    653. 

  653. -mstack-align  -mdata-align  -mconst-align 
    654. 

  654. -m32-bit  -m16-bit  -m8-bit  -mno-prologue-epilogue  -mno-gotplt 
    655. 

  655. -melf  -maout  -melinux  -mlinux  -sim  -sim2 
    656. 

  656. -mmul-bug-workaround  -mno-mul-bug-workaround
    657. 

  657. </pre></div>
    658. 

  658. 

  659. <p><em>CR16 Options</em>
    660. 

  660. </p><div class="smallexample">
    661. 

  661. <pre class="smallexample">-mmac 
    662. 

  662. -mcr16cplus  -mcr16c 
    663. 

  663. -msim  -mint32  -mbit-ops
    664. 

  664. -mdata-model=<var>model</var>
    665. 

  665. </pre></div>
    666. 

  666. 

  667. <p><em>Darwin Options</em>
    668. 

  668. </p><div class="smallexample">
    669. 

  669. <pre class="smallexample">-all_load  -allowable_client  -arch  -arch_errors_fatal 
    670. 

  670. -arch_only  -bind_at_load  -bundle  -bundle_loader 
    671. 

  671. -client_name  -compatibility_version  -current_version 
    672. 

  672. -dead_strip 
    673. 

  673. -dependency-file  -dylib_file  -dylinker_install_name 
    674. 

  674. -dynamic  -dynamiclib  -exported_symbols_list 
    675. 

  675. -filelist  -flat_namespace  -force_cpusubtype_ALL 
    676. 

  676. -force_flat_namespace  -headerpad_max_install_names 
    677. 

  677. -iframework 
    678. 

  678. -image_base  -init  -install_name  -keep_private_externs 
    679. 

  679. -multi_module  -multiply_defined  -multiply_defined_unused 
    680. 

  680. -noall_load   -no_dead_strip_inits_and_terms 
    681. 

  681. -nofixprebinding  -nomultidefs  -noprebind  -noseglinkedit 
    682. 

  682. -pagezero_size  -prebind  -prebind_all_twolevel_modules 
    683. 

  683. -private_bundle  -read_only_relocs  -sectalign 
    684. 

  684. -sectobjectsymbols  -whyload  -seg1addr 
    685. 

  685. -sectcreate  -sectobjectsymbols  -sectorder 
    686. 

  686. -segaddr  -segs_read_only_addr  -segs_read_write_addr 
    687. 

  687. -seg_addr_table  -seg_addr_table_filename  -seglinkedit 
    688. 

  688. -segprot  -segs_read_only_addr  -segs_read_write_addr 
    689. 

  689. -single_module  -static  -sub_library  -sub_umbrella 
    690. 

  690. -twolevel_namespace  -umbrella  -undefined 
    691. 

  691. -unexported_symbols_list  -weak_reference_mismatches 
    692. 

  692. -whatsloaded  -F  -gused  -gfull  -mmacosx-version-min=<var>version</var> 
    693. 

  693. -mkernel  -mone-byte-bool
    694. 

  694. </pre></div>
    695. 

  695. 

  696. <p><em>DEC Alpha Options</em>
    697. 

  697. </p><div class="smallexample">
    698. 

  698. <pre class="smallexample">-mno-fp-regs  -msoft-float 
    699. 

  699. -mieee  -mieee-with-inexact  -mieee-conformant 
    700. 

  700. -mfp-trap-mode=<var>mode</var>  -mfp-rounding-mode=<var>mode</var> 
    701. 

  701. -mtrap-precision=<var>mode</var>  -mbuild-constants 
    702. 

  702. -mcpu=<var>cpu-type</var>  -mtune=<var>cpu-type</var> 
    703. 

  703. -mbwx  -mmax  -mfix  -mcix 
    704. 

  704. -mfloat-vax  -mfloat-ieee 
    705. 

  705. -mexplicit-relocs  -msmall-data  -mlarge-data 
    706. 

  706. -msmall-text  -mlarge-text 
    707. 

  707. -mmemory-latency=<var>time</var>
    708. 

  708. </pre></div>
    709. 

  709. 

  710. <p><em>FR30 Options</em>
    711. 

  711. </p><div class="smallexample">
    712. 

  712. <pre class="smallexample">-msmall-model  -mno-lsim
    713. 

  713. </pre></div>
    714. 

  714. 

  715. <p><em>FT32 Options</em>
    716. 

  716. </p><div class="smallexample">
    717. 

  717. <pre class="smallexample">-msim  -mlra  -mnodiv
    718. 

  718. </pre></div>
    719. 

  719. 

  720. <p><em>FRV Options</em>
    721. 

  721. </p><div class="smallexample">
    722. 

  722. <pre class="smallexample">-mgpr-32  -mgpr-64  -mfpr-32  -mfpr-64 
    723. 

  723. -mhard-float  -msoft-float 
    724. 

  724. -malloc-cc  -mfixed-cc  -mdword  -mno-dword 
    725. 

  725. -mdouble  -mno-double 
    726. 

  726. -mmedia  -mno-media  -mmuladd  -mno-muladd 
    727. 

  727. -mfdpic  -minline-plt  -mgprel-ro  -multilib-library-pic 
    728. 

  728. -mlinked-fp  -mlong-calls  -malign-labels 
    729. 

  729. -mlibrary-pic  -macc-4  -macc-8 
    730. 

  730. -mpack  -mno-pack  -mno-eflags  -mcond-move  -mno-cond-move 
    731. 

  731. -moptimize-membar  -mno-optimize-membar 
    732. 

  732. -mscc  -mno-scc  -mcond-exec  -mno-cond-exec 
    733. 

  733. -mvliw-branch  -mno-vliw-branch 
    734. 

  734. -mmulti-cond-exec  -mno-multi-cond-exec  -mnested-cond-exec 
    735. 

  735. -mno-nested-cond-exec  -mtomcat-stats 
    736. 

  736. -mTLS  -mtls 
    737. 

  737. -mcpu=<var>cpu</var>
    738. 

  738. </pre></div>
    739. 

  739. 

  740. <p><em>GNU/Linux Options</em>
    741. 

  741. </p><div class="smallexample">
    742. 

  742. <pre class="smallexample">-mglibc  -muclibc  -mmusl  -mbionic  -mandroid 
    743. 

  743. -tno-android-cc  -tno-android-ld
    744. 

  744. </pre></div>
    745. 

  745. 

  746. <p><em>H8/300 Options</em>
    747. 

  747. </p><div class="smallexample">
    748. 

  748. <pre class="smallexample">-mrelax  -mh  -ms  -mn  -mexr  -mno-exr  -mint32  -malign-300
    749. 

  749. </pre></div>
    750. 

  750. 

  751. <p><em>HPPA Options</em>
    752. 

  752. </p><div class="smallexample">
    753. 

  753. <pre class="smallexample">-march=<var>architecture-type</var> 
    754. 

  754. -mcaller-copies  -mdisable-fpregs  -mdisable-indexing 
    755. 

  755. -mfast-indirect-calls  -mgas  -mgnu-ld   -mhp-ld 
    756. 

  756. -mfixed-range=<var>register-range</var> 
    757. 

  757. -mjump-in-delay  -mlinker-opt  -mlong-calls 
    758. 

  758. -mlong-load-store  -mno-disable-fpregs 
    759. 

  759. -mno-disable-indexing  -mno-fast-indirect-calls  -mno-gas 
    760. 

  760. -mno-jump-in-delay  -mno-long-load-store 
    761. 

  761. -mno-portable-runtime  -mno-soft-float 
    762. 

  762. -mno-space-regs  -msoft-float  -mpa-risc-1-0 
    763. 

  763. -mpa-risc-1-1  -mpa-risc-2-0  -mportable-runtime 
    764. 

  764. -mschedule=<var>cpu-type</var>  -mspace-regs  -msio  -mwsio 
    765. 

  765. -munix=<var>unix-std</var>  -nolibdld  -static  -threads
    766. 

  766. </pre></div>
    767. 

  767. 

  768. <p><em>IA-64 Options</em>
    769. 

  769. </p><div class="smallexample">
    770. 

  770. <pre class="smallexample">-mbig-endian  -mlittle-endian  -mgnu-as  -mgnu-ld  -mno-pic 
    771. 

  771. -mvolatile-asm-stop  -mregister-names  -msdata  -mno-sdata 
    772. 

  772. -mconstant-gp  -mauto-pic  -mfused-madd 
    773. 

  773. -minline-float-divide-min-latency 
    774. 

  774. -minline-float-divide-max-throughput 
    775. 

  775. -mno-inline-float-divide 
    776. 

  776. -minline-int-divide-min-latency 
    777. 

  777. -minline-int-divide-max-throughput  
    778. 

  778. -mno-inline-int-divide 
    779. 

  779. -minline-sqrt-min-latency  -minline-sqrt-max-throughput 
    780. 

  780. -mno-inline-sqrt 
    781. 

  781. -mdwarf2-asm  -mearly-stop-bits 
    782. 

  782. -mfixed-range=<var>register-range</var>  -mtls-size=<var>tls-size</var> 
    783. 

  783. -mtune=<var>cpu-type</var>  -milp32  -mlp64 
    784. 

  784. -msched-br-data-spec  -msched-ar-data-spec  -msched-control-spec 
    785. 

  785. -msched-br-in-data-spec  -msched-ar-in-data-spec  -msched-in-control-spec 
    786. 

  786. -msched-spec-ldc  -msched-spec-control-ldc 
    787. 

  787. -msched-prefer-non-data-spec-insns  -msched-prefer-non-control-spec-insns 
    788. 

  788. -msched-stop-bits-after-every-cycle  -msched-count-spec-in-critical-path 
    789. 

  789. -msel-sched-dont-check-control-spec  -msched-fp-mem-deps-zero-cost 
    790. 

  790. -msched-max-memory-insns-hard-limit  -msched-max-memory-insns=<var>max-insns</var>
    791. 

  791. </pre></div>
    792. 

  792. 

  793. <p><em>LM32 Options</em>
    794. 

  794. </p><div class="smallexample">
    795. 

  795. <pre class="smallexample">-mbarrel-shift-enabled  -mdivide-enabled  -mmultiply-enabled 
    796. 

  796. -msign-extend-enabled  -muser-enabled
    797. 

  797. </pre></div>
    798. 

  798. 

  799. <p><em>M32R/D Options</em>
    800. 

  800. </p><div class="smallexample">
    801. 

  801. <pre class="smallexample">-m32r2  -m32rx  -m32r 
    802. 

  802. -mdebug 
    803. 

  803. -malign-loops  -mno-align-loops 
    804. 

  804. -missue-rate=<var>number</var> 
    805. 

  805. -mbranch-cost=<var>number</var> 
    806. 

  806. -mmodel=<var>code-size-model-type</var> 
    807. 

  807. -msdata=<var>sdata-type</var> 
    808. 

  808. -mno-flush-func  -mflush-func=<var>name</var> 
    809. 

  809. -mno-flush-trap  -mflush-trap=<var>number</var> 
    810. 

  810. -G <var>num</var>
    811. 

  811. </pre></div>
    812. 

  812. 

  813. <p><em>M32C Options</em>
    814. 

  814. </p><div class="smallexample">
    815. 

  815. <pre class="smallexample">-mcpu=<var>cpu</var>  -msim  -memregs=<var>number</var>
    816. 

  816. </pre></div>
    817. 

  817. 

  818. <p><em>M680x0 Options</em>
    819. 

  819. </p><div class="smallexample">
    820. 

  820. <pre class="smallexample">-march=<var>arch</var>  -mcpu=<var>cpu</var>  -mtune=<var>tune</var> 
    821. 

  821. -m68000  -m68020  -m68020-40  -m68020-60  -m68030  -m68040 
    822. 

  822. -m68060  -mcpu32  -m5200  -m5206e  -m528x  -m5307  -m5407 
    823. 

  823. -mcfv4e  -mbitfield  -mno-bitfield  -mc68000  -mc68020 
    824. 

  824. -mnobitfield  -mrtd  -mno-rtd  -mdiv  -mno-div  -mshort 
    825. 

  825. -mno-short  -mhard-float  -m68881  -msoft-float  -mpcrel 
    826. 

  826. -malign-int  -mstrict-align  -msep-data  -mno-sep-data 
    827. 

  827. -mshared-library-id=n  -mid-shared-library  -mno-id-shared-library 
    828. 

  828. -mxgot  -mno-xgot  -mlong-jump-table-offsets
    829. 

  829. </pre></div>
    830. 

  830. 

  831. <p><em>MCore Options</em>
    832. 

  832. </p><div class="smallexample">
    833. 

  833. <pre class="smallexample">-mhardlit  -mno-hardlit  -mdiv  -mno-div  -mrelax-immediates 
    834. 

  834. -mno-relax-immediates  -mwide-bitfields  -mno-wide-bitfields 
    835. 

  835. -m4byte-functions  -mno-4byte-functions  -mcallgraph-data 
    836. 

  836. -mno-callgraph-data  -mslow-bytes  -mno-slow-bytes  -mno-lsim 
    837. 

  837. -mlittle-endian  -mbig-endian  -m210  -m340  -mstack-increment
    838. 

  838. </pre></div>
    839. 

  839. 

  840. <p><em>MeP Options</em>
    841. 

  841. </p><div class="smallexample">
    842. 

  842. <pre class="smallexample">-mabsdiff  -mall-opts  -maverage  -mbased=<var>n</var>  -mbitops 
    843. 

  843. -mc=<var>n</var>  -mclip  -mconfig=<var>name</var>  -mcop  -mcop32  -mcop64  -mivc2 
    844. 

  844. -mdc  -mdiv  -meb  -mel  -mio-volatile  -ml  -mleadz  -mm  -mminmax 
    845. 

  845. -mmult  -mno-opts  -mrepeat  -ms  -msatur  -msdram  -msim  -msimnovec  -mtf 
    846. 

  846. -mtiny=<var>n</var>
    847. 

  847. </pre></div>
    848. 

  848. 

  849. <p><em>MicroBlaze Options</em>
    850. 

  850. </p><div class="smallexample">
    851. 

  851. <pre class="smallexample">-msoft-float  -mhard-float  -msmall-divides  -mcpu=<var>cpu</var> 
    852. 

  852. -mmemcpy  -mxl-soft-mul  -mxl-soft-div  -mxl-barrel-shift 
    853. 

  853. -mxl-pattern-compare  -mxl-stack-check  -mxl-gp-opt  -mno-clearbss 
    854. 

  854. -mxl-multiply-high  -mxl-float-convert  -mxl-float-sqrt 
    855. 

  855. -mbig-endian  -mlittle-endian  -mxl-reorder  -mxl-mode-<var>app-model</var>
    856. 

  856. </pre></div>
    857. 

  857. 

  858. <p><em>MIPS Options</em>
    859. 

  859. </p><div class="smallexample">
    860. 

  860. <pre class="smallexample">-EL  -EB  -march=<var>arch</var>  -mtune=<var>arch</var> 
    861. 

  861. -mips1  -mips2  -mips3  -mips4  -mips32  -mips32r2  -mips32r3  -mips32r5 
    862. 

  862. -mips32r6  -mips64  -mips64r2  -mips64r3  -mips64r5  -mips64r6 
    863. 

  863. -mips16  -mno-mips16  -mflip-mips16 
    864. 

  864. -minterlink-compressed  -mno-interlink-compressed 
    865. 

  865. -minterlink-mips16  -mno-interlink-mips16 
    866. 

  866. -mabi=<var>abi</var>  -mabicalls  -mno-abicalls 
    867. 

  867. -mshared  -mno-shared  -mplt  -mno-plt  -mxgot  -mno-xgot 
    868. 

  868. -mgp32  -mgp64  -mfp32  -mfpxx  -mfp64  -mhard-float  -msoft-float 
    869. 

  869. -mno-float  -msingle-float  -mdouble-float 
    870. 

  870. -modd-spreg  -mno-odd-spreg 
    871. 

  871. -mabs=<var>mode</var>  -mnan=<var>encoding</var> 
    872. 

  872. -mdsp  -mno-dsp  -mdspr2  -mno-dspr2 
    873. 

  873. -mmcu  -mmno-mcu 
    874. 

  874. -meva  -mno-eva 
    875. 

  875. -mvirt  -mno-virt 
    876. 

  876. -mxpa  -mno-xpa 
    877. 

  877. -mmicromips  -mno-micromips 
    878. 

  878. -mmsa  -mno-msa 
    879. 

  879. -mfpu=<var>fpu-type</var> 
    880. 

  880. -msmartmips  -mno-smartmips 
    881. 

  881. -mpaired-single  -mno-paired-single  -mdmx  -mno-mdmx 
    882. 

  882. -mips3d  -mno-mips3d  -mmt  -mno-mt  -mllsc  -mno-llsc 
    883. 

  883. -mlong64  -mlong32  -msym32  -mno-sym32 
    884. 

  884. -G<var>num</var>  -mlocal-sdata  -mno-local-sdata 
    885. 

  885. -mextern-sdata  -mno-extern-sdata  -mgpopt  -mno-gopt 
    886. 

  886. -membedded-data  -mno-embedded-data 
    887. 

  887. -muninit-const-in-rodata  -mno-uninit-const-in-rodata 
    888. 

  888. -mcode-readable=<var>setting</var> 
    889. 

  889. -msplit-addresses  -mno-split-addresses 
    890. 

  890. -mexplicit-relocs  -mno-explicit-relocs 
    891. 

  891. -mcheck-zero-division  -mno-check-zero-division 
    892. 

  892. -mdivide-traps  -mdivide-breaks 
    893. 

  893. -mload-store-pairs  -mno-load-store-pairs 
    894. 

  894. -mmemcpy  -mno-memcpy  -mlong-calls  -mno-long-calls 
    895. 

  895. -mmad  -mno-mad  -mimadd  -mno-imadd  -mfused-madd  -mno-fused-madd  -nocpp 
    896. 

  896. -mfix-24k  -mno-fix-24k 
    897. 

  897. -mfix-r4000  -mno-fix-r4000  -mfix-r4400  -mno-fix-r4400 
    898. 

  898. -mfix-r10000  -mno-fix-r10000  -mfix-rm7000  -mno-fix-rm7000 
    899. 

  899. -mfix-vr4120  -mno-fix-vr4120 
    900. 

  900. -mfix-vr4130  -mno-fix-vr4130  -mfix-sb1  -mno-fix-sb1 
    901. 

  901. -mflush-func=<var>func</var>  -mno-flush-func 
    902. 

  902. -mbranch-cost=<var>num</var>  -mbranch-likely  -mno-branch-likely 
    903. 

  903. -mcompact-branches=<var>policy</var> 
    904. 

  904. -mfp-exceptions  -mno-fp-exceptions 
    905. 

  905. -mvr4130-align  -mno-vr4130-align  -msynci  -mno-synci 
    906. 

  906. -mlxc1-sxc1 -mno-lxc1-sxc1 -mmadd4 -mno-madd4 
    907. 

  907. -mrelax-pic-calls  -mno-relax-pic-calls  -mmcount-ra-address 
    908. 

  908. -mframe-header-opt  -mno-frame-header-opt
    909. 

  909. </pre></div>
    910. 

  910. 

  911. <p><em>MMIX Options</em>
    912. 

  912. </p><div class="smallexample">
    913. 

  913. <pre class="smallexample">-mlibfuncs  -mno-libfuncs  -mepsilon  -mno-epsilon  -mabi=gnu 
    914. 

  914. -mabi=mmixware  -mzero-extend  -mknuthdiv  -mtoplevel-symbols 
    915. 

  915. -melf  -mbranch-predict  -mno-branch-predict  -mbase-addresses 
    916. 

  916. -mno-base-addresses  -msingle-exit  -mno-single-exit
    917. 

  917. </pre></div>
    918. 

  918. 

  919. <p><em>MN10300 Options</em>
    920. 

  920. </p><div class="smallexample">
    921. 

  921. <pre class="smallexample">-mmult-bug  -mno-mult-bug 
    922. 

  922. -mno-am33  -mam33  -mam33-2  -mam34 
    923. 

  923. -mtune=<var>cpu-type</var> 
    924. 

  924. -mreturn-pointer-on-d0 
    925. 

  925. -mno-crt0  -mrelax  -mliw  -msetlb
    926. 

  926. </pre></div>
    927. 

  927. 

  928. <p><em>Moxie Options</em>
    929. 

  929. </p><div class="smallexample">
    930. 

  930. <pre class="smallexample">-meb  -mel  -mmul.x  -mno-crt0
    931. 

  931. </pre></div>
    932. 

  932. 

  933. <p><em>MSP430 Options</em>
    934. 

  934. </p><div class="smallexample">
    935. 

  935. <pre class="smallexample">-msim  -masm-hex  -mmcu=  -mcpu=  -mlarge  -msmall  -mrelax 
    936. 

  936. -mwarn-mcu 
    937. 

  937. -mcode-region=  -mdata-region= 
    938. 

  938. -msilicon-errata=  -msilicon-errata-warn= 
    939. 

  939. -mhwmult=  -minrt
    940. 

  940. </pre></div>
    941. 

  941. 

  942. <p><em>NDS32 Options</em>
    943. 

  943. </p><div class="smallexample">
    944. 

  944. <pre class="smallexample">-mbig-endian  -mlittle-endian 
    945. 

  945. -mreduced-regs  -mfull-regs 
    946. 

  946. -mcmov  -mno-cmov 
    947. 

  947. -mperf-ext  -mno-perf-ext 
    948. 

  948. -mv3push  -mno-v3push 
    949. 

  949. -m16bit  -mno-16bit 
    950. 

  950. -misr-vector-size=<var>num</var> 
    951. 

  951. -mcache-block-size=<var>num</var> 
    952. 

  952. -march=<var>arch</var> 
    953. 

  953. -mcmodel=<var>code-model</var> 
    954. 

  954. -mctor-dtor  -mrelax
    955. 

  955. </pre></div>
    956. 

  956. 

  957. <p><em>Nios II Options</em>
    958. 

  958. </p><div class="smallexample">
    959. 

  959. <pre class="smallexample">-G <var>num</var>  -mgpopt=<var>option</var>  -mgpopt  -mno-gpopt 
    960. 

  960. -mel  -meb 
    961. 

  961. -mno-bypass-cache  -mbypass-cache 
    962. 

  962. -mno-cache-volatile  -mcache-volatile 
    963. 

  963. -mno-fast-sw-div  -mfast-sw-div 
    964. 

  964. -mhw-mul  -mno-hw-mul  -mhw-mulx  -mno-hw-mulx  -mno-hw-div  -mhw-div 
    965. 

  965. -mcustom-<var>insn</var>=<var>N</var>  -mno-custom-<var>insn</var> 
    966. 

  966. -mcustom-fpu-cfg=<var>name</var> 
    967. 

  967. -mhal  -msmallc  -msys-crt0=<var>name</var>  -msys-lib=<var>name</var> 
    968. 

  968. -march=<var>arch</var>  -mbmx  -mno-bmx  -mcdx  -mno-cdx
    969. 

  969. </pre></div>
    970. 

  970. 

  971. <p><em>Nvidia PTX Options</em>
    972. 

  972. </p><div class="smallexample">
    973. 

  973. <pre class="smallexample">-m32  -m64  -mmainkernel  -moptimize
    974. 

  974. </pre></div>
    975. 

  975. 

  976. <p><em>PDP-11 Options</em>
    977. 

  977. </p><div class="smallexample">
    978. 

  978. <pre class="smallexample">-mfpu  -msoft-float  -mac0  -mno-ac0  -m40  -m45  -m10 
    979. 

  979. -mbcopy  -mbcopy-builtin  -mint32  -mno-int16 
    980. 

  980. -mint16  -mno-int32  -mfloat32  -mno-float64 
    981. 

  981. -mfloat64  -mno-float32  -mabshi  -mno-abshi 
    982. 

  982. -mbranch-expensive  -mbranch-cheap 
    983. 

  983. -munix-asm  -mdec-asm
    984. 

  984. </pre></div>
    985. 

  985. 

  986. <p><em>picoChip Options</em>
    987. 

  987. </p><div class="smallexample">
    988. 

  988. <pre class="smallexample">-mae=<var>ae_type</var>  -mvliw-lookahead=<var>N</var> 
    989. 

  989. -msymbol-as-address  -mno-inefficient-warnings
    990. 

  990. </pre></div>
    991. 

  991. 

  992. <p><em>PowerPC Options</em>
    993. 

  993. See RS/6000 and PowerPC Options.
    994. 

  994. </p>
    995. 

  995. <p><em>RISC-V Options</em>
    996. 

  996. </p><div class="smallexample">
    997. 

  997. <pre class="smallexample">-mbranch-cost=<var>N-instruction</var> 
    998. 

  998. -mplt  -mno-plt 
    999. 

  999. -mabi=<var>ABI-string</var> 
    1000. 

  1000. -mfdiv  -mno-fdiv 
    1001. 

  1001. -mdiv  -mno-div 
    1002. 

  1002. -march=<var>ISA-string</var> 
    1003. 

  1003. -mtune=<var>processor-string</var> 
    1004. 

  1004. -msmall-data-limit=<var>N-bytes</var> 
    1005. 

  1005. -msave-restore  -mno-save-restore 
    1006. 

  1006. -mstrict-align -mno-strict-align 
    1007. 

  1007. -mcmodel=medlow -mcmodel=medany 
    1008. 

  1008. -mexplicit-relocs  -mno-explicit-relocs 
    1009. 

  1009. </pre></div>
    1010. 

  1010. 

  1011. <p><em>RL78 Options</em>
    1012. 

  1012. </p><div class="smallexample">
    1013. 

  1013. <pre class="smallexample">-msim  -mmul=none  -mmul=g13  -mmul=g14  -mallregs 
    1014. 

  1014. -mcpu=g10  -mcpu=g13  -mcpu=g14  -mg10  -mg13  -mg14 
    1015. 

  1015. -m64bit-doubles  -m32bit-doubles  -msave-mduc-in-interrupts
    1016. 

  1016. </pre></div>
    1017. 

  1017. 

  1018. <p><em>RS/6000 and PowerPC Options</em>
    1019. 

  1019. </p><div class="smallexample">
    1020. 

  1020. <pre class="smallexample">-mcpu=<var>cpu-type</var> 
    1021. 

  1021. -mtune=<var>cpu-type</var> 
    1022. 

  1022. -mcmodel=<var>code-model</var> 
    1023. 

  1023. -mpowerpc64 
    1024. 

  1024. -maltivec  -mno-altivec 
    1025. 

  1025. -mpowerpc-gpopt  -mno-powerpc-gpopt 
    1026. 

  1026. -mpowerpc-gfxopt  -mno-powerpc-gfxopt 
    1027. 

  1027. -mmfcrf  -mno-mfcrf  -mpopcntb  -mno-popcntb  -mpopcntd  -mno-popcntd 
    1028. 

  1028. -mfprnd  -mno-fprnd 
    1029. 

  1029. -mcmpb  -mno-cmpb  -mmfpgpr  -mno-mfpgpr  -mhard-dfp  -mno-hard-dfp 
    1030. 

  1030. -mfull-toc   -mminimal-toc  -mno-fp-in-toc  -mno-sum-in-toc 
    1031. 

  1031. -m64  -m32  -mxl-compat  -mno-xl-compat  -mpe 
    1032. 

  1032. -malign-power  -malign-natural 
    1033. 

  1033. -msoft-float  -mhard-float  -mmultiple  -mno-multiple 
    1034. 

  1034. -msingle-float  -mdouble-float  -msimple-fpu 
    1035. 

  1035. -mstring  -mno-string  -mupdate  -mno-update 
    1036. 

  1036. -mavoid-indexed-addresses  -mno-avoid-indexed-addresses 
    1037. 

  1037. -mfused-madd  -mno-fused-madd  -mbit-align  -mno-bit-align 
    1038. 

  1038. -mstrict-align  -mno-strict-align  -mrelocatable 
    1039. 

  1039. -mno-relocatable  -mrelocatable-lib  -mno-relocatable-lib 
    1040. 

  1040. -mtoc  -mno-toc  -mlittle  -mlittle-endian  -mbig  -mbig-endian 
    1041. 

  1041. -mdynamic-no-pic  -maltivec  -mswdiv  -msingle-pic-base 
    1042. 

  1042. -mprioritize-restricted-insns=<var>priority</var> 
    1043. 

  1043. -msched-costly-dep=<var>dependence_type</var> 
    1044. 

  1044. -minsert-sched-nops=<var>scheme</var> 
    1045. 

  1045. -mcall-sysv  -mcall-netbsd 
    1046. 

  1046. -maix-struct-return  -msvr4-struct-return 
    1047. 

  1047. -mabi=<var>abi-type</var>  -msecure-plt  -mbss-plt 
    1048. 

  1048. -mblock-move-inline-limit=<var>num</var> 
    1049. 

  1049. -misel  -mno-isel 
    1050. 

  1050. -misel=yes  -misel=no 
    1051. 

  1051. -mspe  -mno-spe 
    1052. 

  1052. -mspe=yes  -mspe=no 
    1053. 

  1053. -mpaired 
    1054. 

  1054. -mgen-cell-microcode  -mwarn-cell-microcode 
    1055. 

  1055. -mvrsave  -mno-vrsave 
    1056. 

  1056. -mmulhw  -mno-mulhw 
    1057. 

  1057. -mdlmzb  -mno-dlmzb 
    1058. 

  1058. -mfloat-gprs=yes  -mfloat-gprs=no  -mfloat-gprs=single  -mfloat-gprs=double 
    1059. 

  1059. -mprototype  -mno-prototype 
    1060. 

  1060. -msim  -mmvme  -mads  -myellowknife  -memb  -msdata 
    1061. 

  1061. -msdata=<var>opt</var>  -mreadonly-in-sdata  -mvxworks  -G <var>num</var> 
    1062. 

  1062. -mrecip  -mrecip=<var>opt</var>  -mno-recip  -mrecip-precision 
    1063. 

  1063. -mno-recip-precision 
    1064. 

  1064. -mveclibabi=<var>type</var>  -mfriz  -mno-friz 
    1065. 

  1065. -mpointers-to-nested-functions  -mno-pointers-to-nested-functions 
    1066. 

  1066. -msave-toc-indirect  -mno-save-toc-indirect 
    1067. 

  1067. -mpower8-fusion  -mno-mpower8-fusion  -mpower8-vector  -mno-power8-vector 
    1068. 

  1068. -mcrypto  -mno-crypto  -mhtm  -mno-htm  -mdirect-move  -mno-direct-move 
    1069. 

  1069. -mquad-memory  -mno-quad-memory 
    1070. 

  1070. -mquad-memory-atomic  -mno-quad-memory-atomic 
    1071. 

  1071. -mcompat-align-parm  -mno-compat-align-parm 
    1072. 

  1072. -mupper-regs-df  -mno-upper-regs-df  -mupper-regs-sf  -mno-upper-regs-sf 
    1073. 

  1073. -mupper-regs-di  -mno-upper-regs-di 
    1074. 

  1074. -mupper-regs  -mno-upper-regs 
    1075. 

  1075. -mfloat128  -mno-float128  -mfloat128-hardware  -mno-float128-hardware 
    1076. 

  1076. -mgnu-attribute  -mno-gnu-attribute 
    1077. 

  1077. -mstack-protector-guard=<var>guard</var> -mstack-protector-guard-reg=<var>reg</var> 
    1078. 

  1078. -mstack-protector-guard-offset=<var>offset</var> 
    1079. 

  1079. -mlra  -mno-lra
    1080. 

  1080. </pre></div>
    1081. 

  1081. 

  1082. <p><em>RX Options</em>
    1083. 

  1083. </p><div class="smallexample">
    1084. 

  1084. <pre class="smallexample">-m64bit-doubles  -m32bit-doubles  -fpu  -nofpu
    1085. 

  1085. -mcpu=
    1086. 

  1086. -mbig-endian-data  -mlittle-endian-data 
    1087. 

  1087. -msmall-data 
    1088. 

  1088. -msim  -mno-sim
    1089. 

  1089. -mas100-syntax  -mno-as100-syntax
    1090. 

  1090. -mrelax
    1091. 

  1091. -mmax-constant-size=
    1092. 

  1092. -mint-register=
    1093. 

  1093. -mpid
    1094. 

  1094. -mallow-string-insns  -mno-allow-string-insns
    1095. 

  1095. -mjsr
    1096. 

  1096. -mno-warn-multiple-fast-interrupts
    1097. 

  1097. -msave-acc-in-interrupts
    1098. 

  1098. </pre></div>
    1099. 

  1099. 

  1100. <p><em>S/390 and zSeries Options</em>
    1101. 

  1101. </p><div class="smallexample">
    1102. 

  1102. <pre class="smallexample">-mtune=<var>cpu-type</var>  -march=<var>cpu-type</var> 
    1103. 

  1103. -mhard-float  -msoft-float  -mhard-dfp  -mno-hard-dfp 
    1104. 

  1104. -mlong-double-64  -mlong-double-128 
    1105. 

  1105. -mbackchain  -mno-backchain  -mpacked-stack  -mno-packed-stack 
    1106. 

  1106. -msmall-exec  -mno-small-exec  -mmvcle  -mno-mvcle 
    1107. 

  1107. -m64  -m31  -mdebug  -mno-debug  -mesa  -mzarch 
    1108. 

  1108. -mhtm  -mvx  -mzvector 
    1109. 

  1109. -mtpf-trace  -mno-tpf-trace  -mfused-madd  -mno-fused-madd 
    1110. 

  1110. -mwarn-framesize  -mwarn-dynamicstack  -mstack-size  -mstack-guard 
    1111. 

  1111. -mhotpatch=<var>halfwords</var>,<var>halfwords</var>
    1112. 

  1112. </pre></div>
    1113. 

  1113. 

  1114. <p><em>Score Options</em>
    1115. 

  1115. </p><div class="smallexample">
    1116. 

  1116. <pre class="smallexample">-meb  -mel 
    1117. 

  1117. -mnhwloop 
    1118. 

  1118. -muls 
    1119. 

  1119. -mmac 
    1120. 

  1120. -mscore5  -mscore5u  -mscore7  -mscore7d
    1121. 

  1121. </pre></div>
    1122. 

  1122. 

  1123. <p><em>SH Options</em>
    1124. 

  1124. </p><div class="smallexample">
    1125. 

  1125. <pre class="smallexample">-m1  -m2  -m2e 
    1126. 

  1126. -m2a-nofpu  -m2a-single-only  -m2a-single  -m2a 
    1127. 

  1127. -m3  -m3e 
    1128. 

  1128. -m4-nofpu  -m4-single-only  -m4-single  -m4 
    1129. 

  1129. -m4a-nofpu  -m4a-single-only  -m4a-single  -m4a  -m4al 
    1130. 

  1130. -mb  -ml  -mdalign  -mrelax 
    1131. 

  1131. -mbigtable  -mfmovd  -mrenesas  -mno-renesas  -mnomacsave 
    1132. 

  1132. -mieee  -mno-ieee  -mbitops  -misize  -minline-ic_invalidate  -mpadstruct 
    1133. 

  1133. -mprefergot  -musermode  -multcost=<var>number</var>  -mdiv=<var>strategy</var> 
    1134. 

  1134. -mdivsi3_libfunc=<var>name</var>  -mfixed-range=<var>register-range</var> 
    1135. 

  1135. -maccumulate-outgoing-args 
    1136. 

  1136. -matomic-model=<var>atomic-model</var> 
    1137. 

  1137. -mbranch-cost=<var>num</var>  -mzdcbranch  -mno-zdcbranch 
    1138. 

  1138. -mcbranch-force-delay-slot 
    1139. 

  1139. -mfused-madd  -mno-fused-madd  -mfsca  -mno-fsca  -mfsrra  -mno-fsrra 
    1140. 

  1140. -mpretend-cmove  -mtas
    1141. 

  1141. </pre></div>
    1142. 

  1142. 

  1143. <p><em>Solaris 2 Options</em>
    1144. 

  1144. </p><div class="smallexample">
    1145. 

  1145. <pre class="smallexample">-mclear-hwcap  -mno-clear-hwcap  -mimpure-text  -mno-impure-text 
    1146. 

  1146. -pthreads
    1147. 

  1147. </pre></div>
    1148. 

  1148. 

  1149. <p><em>SPARC Options</em>
    1150. 

  1150. </p><div class="smallexample">
    1151. 

  1151. <pre class="smallexample">-mcpu=<var>cpu-type</var> 
    1152. 

  1152. -mtune=<var>cpu-type</var> 
    1153. 

  1153. -mcmodel=<var>code-model</var> 
    1154. 

  1154. -mmemory-model=<var>mem-model</var> 
    1155. 

  1155. -m32  -m64  -mapp-regs  -mno-app-regs 
    1156. 

  1156. -mfaster-structs  -mno-faster-structs  -mflat  -mno-flat 
    1157. 

  1157. -mfpu  -mno-fpu  -mhard-float  -msoft-float 
    1158. 

  1158. -mhard-quad-float  -msoft-quad-float 
    1159. 

  1159. -mstack-bias  -mno-stack-bias 
    1160. 

  1160. -mstd-struct-return  -mno-std-struct-return 
    1161. 

  1161. -munaligned-doubles  -mno-unaligned-doubles 
    1162. 

  1162. -muser-mode  -mno-user-mode 
    1163. 

  1163. -mv8plus  -mno-v8plus  -mvis  -mno-vis 
    1164. 

  1164. -mvis2  -mno-vis2  -mvis3  -mno-vis3 
    1165. 

  1165. -mvis4 -mno-vis4 -mvis4b -mno-vis4b 
    1166. 

  1166. -mcbcond  -mno-cbcond  -mfmaf  -mno-fmaf  -mfsmuld  -mno-fsmuld  
    1167. 

  1167. -mpopc  -mno-popc  -msubxc  -mno-subxc 
    1168. 

  1168. -mfix-at697f  -mfix-ut699  -mfix-ut700  -mfix-gr712rc 
    1169. 

  1169. -mlra  -mno-lra
    1170. 

  1170. </pre></div>
    1171. 

  1171. 

  1172. <p><em>SPU Options</em>
    1173. 

  1173. </p><div class="smallexample">
    1174. 

  1174. <pre class="smallexample">-mwarn-reloc  -merror-reloc 
    1175. 

  1175. -msafe-dma  -munsafe-dma 
    1176. 

  1176. -mbranch-hints 
    1177. 

  1177. -msmall-mem  -mlarge-mem  -mstdmain 
    1178. 

  1178. -mfixed-range=<var>register-range</var> 
    1179. 

  1179. -mea32  -mea64 
    1180. 

  1180. -maddress-space-conversion  -mno-address-space-conversion 
    1181. 

  1181. -mcache-size=<var>cache-size</var> 
    1182. 

  1182. -matomic-updates  -mno-atomic-updates
    1183. 

  1183. </pre></div>
    1184. 

  1184. 

  1185. <p><em>System V Options</em>
    1186. 

  1186. </p><div class="smallexample">
    1187. 

  1187. <pre class="smallexample">-Qy  -Qn  -YP,<var>paths</var>  -Ym,<var>dir</var>
    1188. 

  1188. </pre></div>
    1189. 

  1189. 

  1190. <p><em>TILE-Gx Options</em>
    1191. 

  1191. </p><div class="smallexample">
    1192. 

  1192. <pre class="smallexample">-mcpu=CPU  -m32  -m64  -mbig-endian  -mlittle-endian 
    1193. 

  1193. -mcmodel=<var>code-model</var>
    1194. 

  1194. </pre></div>
    1195. 

  1195. 

  1196. <p><em>TILEPro Options</em>
    1197. 

  1197. </p><div class="smallexample">
    1198. 

  1198. <pre class="smallexample">-mcpu=<var>cpu</var>  -m32
    1199. 

  1199. </pre></div>
    1200. 

  1200. 

  1201. <p><em>V850 Options</em>
    1202. 

  1202. </p><div class="smallexample">
    1203. 

  1203. <pre class="smallexample">-mlong-calls  -mno-long-calls  -mep  -mno-ep 
    1204. 

  1204. -mprolog-function  -mno-prolog-function  -mspace 
    1205. 

  1205. -mtda=<var>n</var>  -msda=<var>n</var>  -mzda=<var>n</var> 
    1206. 

  1206. -mapp-regs  -mno-app-regs 
    1207. 

  1207. -mdisable-callt  -mno-disable-callt 
    1208. 

  1208. -mv850e2v3  -mv850e2  -mv850e1  -mv850es 
    1209. 

  1209. -mv850e  -mv850  -mv850e3v5 
    1210. 

  1210. -mloop 
    1211. 

  1211. -mrelax 
    1212. 

  1212. -mlong-jumps 
    1213. 

  1213. -msoft-float 
    1214. 

  1214. -mhard-float 
    1215. 

  1215. -mgcc-abi 
    1216. 

  1216. -mrh850-abi 
    1217. 

  1217. -mbig-switch
    1218. 

  1218. </pre></div>
    1219. 

  1219. 

  1220. <p><em>VAX Options</em>
    1221. 

  1221. </p><div class="smallexample">
    1222. 

  1222. <pre class="smallexample">-mg  -mgnu  -munix
    1223. 

  1223. </pre></div>
    1224. 

  1224. 

  1225. <p><em>Visium Options</em>
    1226. 

  1226. </p><div class="smallexample">
    1227. 

  1227. <pre class="smallexample">-mdebug  -msim  -mfpu  -mno-fpu  -mhard-float  -msoft-float 
    1228. 

  1228. -mcpu=<var>cpu-type</var>  -mtune=<var>cpu-type</var>  -msv-mode  -muser-mode
    1229. 

  1229. </pre></div>
    1230. 

  1230. 

  1231. <p><em>VMS Options</em>
    1232. 

  1232. </p><div class="smallexample">
    1233. 

  1233. <pre class="smallexample">-mvms-return-codes  -mdebug-main=<var>prefix</var>  -mmalloc64 
    1234. 

  1234. -mpointer-size=<var>size</var>
    1235. 

  1235. </pre></div>
    1236. 

  1236. 

  1237. <p><em>VxWorks Options</em>
    1238. 

  1238. </p><div class="smallexample">
    1239. 

  1239. <pre class="smallexample">-mrtp  -non-static  -Bstatic  -Bdynamic 
    1240. 

  1240. -Xbind-lazy  -Xbind-now
    1241. 

  1241. </pre></div>
    1242. 

  1242. 

  1243. <p><em>x86 Options</em>
    1244. 

  1244. </p><div class="smallexample">
    1245. 

  1245. <pre class="smallexample">-mtune=<var>cpu-type</var>  -march=<var>cpu-type</var> 
    1246. 

  1246. -mtune-ctrl=<var>feature-list</var>  -mdump-tune-features  -mno-default 
    1247. 

  1247. -mfpmath=<var>unit</var> 
    1248. 

  1248. -masm=<var>dialect</var>  -mno-fancy-math-387 
    1249. 

  1249. -mno-fp-ret-in-387  -m80387  -mhard-float  -msoft-float 
    1250. 

  1250. -mno-wide-multiply  -mrtd  -malign-double 
    1251. 

  1251. -mpreferred-stack-boundary=<var>num</var> 
    1252. 

  1252. -mincoming-stack-boundary=<var>num</var> 
    1253. 

  1253. -mcld  -mcx16  -msahf  -mmovbe  -mcrc32 
    1254. 

  1254. -mrecip  -mrecip=<var>opt</var> 
    1255. 

  1255. -mvzeroupper  -mprefer-avx128 
    1256. 

  1256. -mmmx  -msse  -msse2  -msse3  -mssse3  -msse4.1  -msse4.2  -msse4  -mavx 
    1257. 

  1257. -mavx2  -mavx512f  -mavx512pf  -mavx512er  -mavx512cd  -mavx512vl 
    1258. 

  1258. -mavx512bw  -mavx512dq  -mavx512ifma  -mavx512vbmi  -msha  -maes 
    1259. 

  1259. -mpclmul  -mfsgsbase  -mrdrnd  -mf16c  -mfma 
    1260. 

  1260. -mprefetchwt1  -mclflushopt  -mxsavec  -mxsaves 
    1261. 

  1261. -msse4a  -m3dnow  -m3dnowa  -mpopcnt  -mabm  -mbmi  -mtbm  -mfma4  -mxop 
    1262. 

  1262. -mlzcnt  -mbmi2  -mfxsr  -mxsave  -mxsaveopt  -mrtm  -mlwp  -mmpx  
    1263. 

  1263. -mmwaitx  -mclzero  -mpku  -mthreads 
    1264. 

  1264. -mms-bitfields  -mno-align-stringops  -minline-all-stringops 
    1265. 

  1265. -minline-stringops-dynamically  -mstringop-strategy=<var>alg</var> 
    1266. 

  1266. -mmemcpy-strategy=<var>strategy</var>  -mmemset-strategy=<var>strategy</var> 
    1267. 

  1267. -mpush-args  -maccumulate-outgoing-args  -m128bit-long-double 
    1268. 

  1268. -m96bit-long-double  -mlong-double-64  -mlong-double-80  -mlong-double-128 
    1269. 

  1269. -mregparm=<var>num</var>  -msseregparm 
    1270. 

  1270. -mveclibabi=<var>type</var>  -mvect8-ret-in-mem 
    1271. 

  1271. -mpc32  -mpc64  -mpc80  -mstackrealign 
    1272. 

  1272. -momit-leaf-frame-pointer  -mno-red-zone  -mno-tls-direct-seg-refs 
    1273. 

  1273. -mcmodel=<var>code-model</var>  -mabi=<var>name</var>  -maddress-mode=<var>mode</var> 
    1274. 

  1274. -m32  -m64  -mx32  -m16  -miamcu  -mlarge-data-threshold=<var>num</var> 
    1275. 

  1275. -msse2avx  -mfentry  -mrecord-mcount  -mnop-mcount  -m8bit-idiv 
    1276. 

  1276. -mavx256-split-unaligned-load  -mavx256-split-unaligned-store 
    1277. 

  1277. -malign-data=<var>type</var>  -mstack-protector-guard=<var>guard</var> 
    1278. 

  1278. -mmitigate-rop  -mgeneral-regs-only 
    1279. 

  1279. -mindirect-branch=<var>choice</var> -mfunction-return=<var>choice</var> 
    1280. 

  1280. -mindirect-branch-register
    1281. 

  1281. </pre></div>
    1282. 

  1282. 

  1283. <p><em>x86 Windows Options</em>
    1284. 

  1284. </p><div class="smallexample">
    1285. 

  1285. <pre class="smallexample">-mconsole  -mcygwin  -mno-cygwin  -mdll 
    1286. 

  1286. -mnop-fun-dllimport  -mthread 
    1287. 

  1287. -municode  -mwin32  -mwindows  -fno-set-stack-executable
    1288. 

  1288. </pre></div>
    1289. 

  1289. 

  1290. <p><em>Xstormy16 Options</em>
    1291. 

  1291. </p><div class="smallexample">
    1292. 

  1292. <pre class="smallexample">-msim
    1293. 

  1293. </pre></div>
    1294. 

  1294. 

  1295. <p><em>Xtensa Options</em>
    1296. 

  1296. </p><div class="smallexample">
    1297. 

  1297. <pre class="smallexample">-mconst16  -mno-const16 
    1298. 

  1298. -mfused-madd  -mno-fused-madd 
    1299. 

  1299. -mforce-no-pic 
    1300. 

  1300. -mserialize-volatile  -mno-serialize-volatile 
    1301. 

  1301. -mtext-section-literals  -mno-text-section-literals 
    1302. 

  1302. -mauto-litpools  -mno-auto-litpools 
    1303. 

  1303. -mtarget-align  -mno-target-align 
    1304. 

  1304. -mlongcalls  -mno-longcalls
    1305. 

  1305. </pre></div>
    1306. 

  1306. 

  1307. <p><em>zSeries Options</em>
    1308. 

  1308. See S/390 and zSeries Options.
    1309. 

  1309. </p></dd>
    1310. 

  1310. </dl>
    1311. 

  1311. 

  1312. 

  1313. <hr>
    1314. 

  1314. <div class="header">
    1315. 

  1315. <p>
    1316. 

  1316. Next: <a href="Overall-Options.html#Overall-Options" accesskey="n" rel="next">Overall Options</a>, Up: <a href="Invoking-GCC.html#Invoking-GCC" accesskey="u" rel="up">Invoking GCC</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
    1317. 

  1317. </div>
    1318. 

  1318. 

  1319. 

  1320. 

  1321. </body>
    1322. 

  1322. </html>
    1323.