Option Summary#
Here is a summary of all the options, grouped by type. Explanations are in the following sections.
Overall Options
See Options Controlling the Kind of Output.
-c-S-E-ofile-dumpbasedumpbase-dumpbase-extauxdropsuf-dumpdirdumppfx-xlanguage-v-###--help[=class[,...]]--target-help--version-pass-exit-codes-pipe-specs=file-wrapper@file-ffile-prefix-map=old=new-fplugin=file-fplugin-arg-name=arg-fdump-ada-spec[-slim]-fada-spec-parent=unit-fdump-go-spec=file
C Language Options
See Options Controlling C Dialect.
-ansi-std=standard-aux-infofilename-fno-asm-fno-builtin-fno-builtin-function-fcond-mismatch-ffreestanding-fgimple-fgnu-tm-fgnu89-inline-fhosted-flax-vector-conversions-fms-extensions-foffload=arg-foffload-options=arg-fopenacc-fopenacc-dim=geom-fopenmp-fopenmp-simd-fpermitted-flt-eval-methods=standard-fplan9-extensions-fsigned-bitfields-funsigned-bitfields-fsigned-char-funsigned-char-fstrict-flex-arrays[=n]-fsso-struct=endianness
C++ Language Options
See Options Controlling C++ Dialect.
-fabi-version=n-fno-access-control-faligned-new=n-fargs-in-order=n-fchar8_t-fcheck-new-fconstexpr-depth=n-fconstexpr-cache-depth=n-fconstexpr-loop-limit=n-fconstexpr-ops-limit=n-fno-elide-constructors-fno-enforce-eh-specs-fno-gnu-keywords-fno-implicit-templates-fno-implicit-inline-templates-fno-implement-inlines-fmodule-header=kind-fmodule-only-fmodules-ts-fmodule-implicit-inline-fno-module-lazy-fmodule-mapper=specification-fmodule-version-ignore-fms-extensions-fnew-inheriting-ctors-fnew-ttp-matching-fno-nonansi-builtins-fnothrow-opt-fno-operator-names-fno-optional-diags-fpermissive-fno-pretty-templates-fno-rtti-fsized-deallocation-ftemplate-backtrace-limit=n-ftemplate-depth=n-fno-threadsafe-statics-fuse-cxa-atexit-fno-weak-nostdinc++-fvisibility-inlines-hidden-fvisibility-ms-compat-fext-numeric-literals-flang-info-include-translate=header-flang-info-include-translate-not-flang-info-module-cmi=module-stdlib=libstdc++,libc++-Wabi-tag-Wcatch-value-Wcatch-value=n-Wno-class-conversion-Wclass-memaccess-Wcomma-subscript-Wconditionally-supported-Wno-conversion-null-Wctad-maybe-unsupported-Wctor-dtor-privacy-Wdangling-reference-Wno-delete-incomplete-Wdelete-non-virtual-dtor-Wno-deprecated-array-compare-Wdeprecated-copy-Wdeprecated-copy-dtor-Wno-deprecated-enum-enum-conversion-Wno-deprecated-enum-float-conversion-Weffc++-Wno-exceptions-Wextra-semi-Wno-inaccessible-base-Wno-inherited-variadic-ctor-Wno-init-list-lifetime-Winvalid-imported-macros-Wno-invalid-offsetof-Wno-literal-suffix-Wmismatched-new-delete-Wmismatched-tags-Wmultiple-inheritance-Wnamespaces-Wnarrowing-Wnoexcept-Wnoexcept-type-Wnon-virtual-dtor-Wpessimizing-move-Wno-placement-new-Wplacement-new=n-Wrange-loop-construct-Wredundant-move-Wredundant-tags-Wreorder-Wregister-Wstrict-null-sentinel-Wno-subobject-linkage-Wtemplates-Wno-non-template-friend-Wold-style-cast-Woverloaded-virtual-Wno-pmf-conversions-Wself-move-Wsign-promo-Wsized-deallocation-Wsuggest-final-methods-Wsuggest-final-types-Wsuggest-override-Wno-terminate-Wuseless-cast-Wno-vexing-parse-Wvirtual-inheritance-Wno-virtual-move-assign-Wvolatile-Wzero-as-null-pointer-constant
Objective-C and Objective-C++ Language Options
See Options Controlling Objective-C and Objective-C++ Dialects.
-fconstant-string-class=class-name-fgnu-runtime-fnext-runtime-fno-nil-receivers-fobjc-abi-version=n-fobjc-call-cxx-cdtors-fobjc-direct-dispatch-fobjc-exceptions-fobjc-gc-fobjc-nilcheck-fobjc-std=objc1-fno-local-ivars-fivar-visibility=[public|protected|private|package]-freplace-objc-classes-fzero-link-gen-decls-Wassign-intercept-Wno-property-assign-default-Wno-protocol-Wobjc-root-class-Wselector-Wstrict-selector-match-Wundeclared-selector
Diagnostic Message Formatting Options
See Options to Control Diagnostic Messages Formatting.
-fmessage-length=n-fdiagnostics-plain-output-fdiagnostics-show-location=[once|every-line]-fdiagnostics-color=[auto|never|always]-fdiagnostics-urls=[auto|never|always]-fdiagnostics-format=[text|sarif-stderr|sarif-file|json|json-stderr|json-file]-fno-diagnostics-show-option-fno-diagnostics-show-caret-fno-diagnostics-show-labels-fno-diagnostics-show-line-numbers-fno-diagnostics-show-cwe-fno-diagnostics-show-rule-fdiagnostics-minimum-margin-width=width-fdiagnostics-parseable-fixits-fdiagnostics-generate-patch-fdiagnostics-show-template-tree-fno-elide-type-fdiagnostics-path-format=[none|separate-events|inline-events]-fdiagnostics-show-path-depths-fno-show-column-fdiagnostics-column-unit=[display|byte]-fdiagnostics-column-origin=origin-fdiagnostics-escape-format=[unicode|bytes]
Warning Options
See Options to Request or Suppress Warnings.
-fsyntax-only-fmax-errors=n-Wpedantic-pedantic-errors-w-Wextra-Wall-Wabi=n-Waddress-Wno-address-of-packed-member-Waggregate-return-Walloc-size-larger-than=byte-size-Walloc-zero-Walloca-Walloca-larger-than=byte-size-Wno-aggressive-loop-optimizations-Warith-conversion-Warray-bounds-Warray-bounds=n-Warray-compare-Wno-attributes-Wattribute-alias=n-Wno-attribute-alias-Wno-attribute-warning-Wbidi-chars=[none|unpaired|any|ucn]-Wbool-compare-Wbool-operation-Wno-builtin-declaration-mismatch-Wno-builtin-macro-redefined-Wc90-c99-compat-Wc99-c11-compat-Wc11-c2x-compat-Wc++-compat-Wc++11-compat-Wc++14-compat-Wc++17-compat-Wc++20-compat-Wno-c++11-extensions-Wno-c++14-extensions-Wno-c++17-extensions-Wno-c++20-extensions-Wno-c++23-extensions-Wcast-align-Wcast-align=strict-Wcast-function-type-Wcast-qual-Wchar-subscripts-Wclobbered-Wcomment-Wconversion-Wno-coverage-mismatch-Wno-cpp-Wdangling-else-Wdangling-pointer-Wdangling-pointer=n-Wdate-time-Wno-deprecated-Wno-deprecated-declarations-Wno-designated-init-Wdisabled-optimization-Wno-discarded-array-qualifiers-Wno-discarded-qualifiers-Wno-div-by-zero-Wdouble-promotion-Wduplicated-branches-Wduplicated-cond-Wempty-body-Wno-endif-labels-Wenum-compare-Wenum-conversion-Wenum-int-mismatch-Werror-Werror=*-Wexpansion-to-defined-Wfatal-errors-Wfloat-conversion-Wfloat-equal-Wformat-Wformat=2-Wno-format-contains-nul-Wno-format-extra-args-Wformat-nonliteral-Wformat-overflow=n-Wformat-security-Wformat-signedness-Wformat-truncation=n-Wformat-y2k-Wframe-address-Wframe-larger-than=byte-size-Wno-free-nonheap-object-Wno-if-not-aligned-Wno-ignored-attributes-Wignored-qualifiers-Wno-incompatible-pointer-types-Wimplicit-Wimplicit-fallthrough-Wimplicit-fallthrough=n-Wno-implicit-function-declaration-Wno-implicit-int-Winfinite-recursion-Winit-self-Winline-Wno-int-conversion-Wint-in-bool-context-Wno-int-to-pointer-cast-Wno-invalid-memory-model-Winvalid-pch-Winvalid-utf8-Wno-unicode-Wjump-misses-init-Wlarger-than=byte-size-Wlogical-not-parentheses-Wlogical-op-Wlong-long-Wno-lto-type-mismatch-Wmain-Wmaybe-uninitialized-Wmemset-elt-size-Wmemset-transposed-args-Wmisleading-indentation-Wmissing-attributes-Wmissing-braces-Wmissing-field-initializers-Wmissing-format-attribute-Wmissing-include-dirs-Wmissing-noreturn-Wno-missing-profile-Wno-multichar-Wmultistatement-macros-Wnonnull-Wnonnull-compare-Wnormalized=[none|id|nfc|nfkc]-Wnull-dereference-Wno-odr-Wopenacc-parallelism-Wopenmp-simd-Wno-overflow-Woverlength-strings-Wno-override-init-side-effects-Wpacked-Wno-packed-bitfield-compat-Wpacked-not-aligned-Wpadded-Wparentheses-Wno-pedantic-ms-format-Wpointer-arith-Wno-pointer-compare-Wno-pointer-to-int-cast-Wno-pragmas-Wno-prio-ctor-dtor-Wredundant-decls-Wrestrict-Wno-return-local-addr-Wreturn-type-Wno-scalar-storage-order-Wsequence-point-Wshadow-Wshadow=global-Wshadow=local-Wshadow=compatible-local-Wno-shadow-ivar-Wno-shift-count-negative-Wno-shift-count-overflow-Wshift-negative-value-Wno-shift-overflow-Wshift-overflow=n-Wsign-compare-Wsign-conversion-Wno-sizeof-array-argument-Wsizeof-array-div-Wsizeof-pointer-div-Wsizeof-pointer-memaccess-Wstack-protector-Wstack-usage=byte-size-Wstrict-aliasing-Wstrict-aliasing=n-Wstrict-overflow-Wstrict-overflow=n-Wstring-compare-Wno-stringop-overflow-Wno-stringop-overread-Wno-stringop-truncation-Wsuggest-attribute=[pure|const|noreturn|format|malloc]-Wswitch-Wno-switch-bool-Wswitch-default-Wswitch-enum-Wno-switch-outside-range-Wno-switch-unreachable-Wsync-nand-Wsystem-headers-Wtautological-compare-Wtrampolines-Wtrigraphs-Wtrivial-auto-var-init-Wtsan-Wtype-limits-Wundef-Wuninitialized-Wunknown-pragmas-Wunsuffixed-float-constants-Wunused-Wunused-but-set-parameter-Wunused-but-set-variable-Wunused-const-variable-Wunused-const-variable=n-Wunused-function-Wunused-label-Wunused-local-typedefs-Wunused-macros-Wunused-parameter-Wno-unused-result-Wunused-value-Wunused-variable-Wno-varargs-Wvariadic-macros-Wvector-operation-performance-Wvla-Wvla-larger-than=byte-size-Wno-vla-larger-than-Wvolatile-register-var-Wwrite-strings-Wxor-used-as-pow-Wzero-length-bounds
Static Analyzer Options
-fanalyzer-fanalyzer-call-summaries-fanalyzer-checker=name-fno-analyzer-feasibility-fanalyzer-fine-grained-fno-analyzer-state-merge-fno-analyzer-state-purge-fanalyzer-transitivity-fno-analyzer-undo-inlining-fanalyzer-verbose-edges-fanalyzer-verbose-state-changes-fanalyzer-verbosity=level-fdump-analyzer-fdump-analyzer-callgraph-fdump-analyzer-exploded-graph-fdump-analyzer-exploded-nodes-fdump-analyzer-exploded-nodes-2-fdump-analyzer-exploded-nodes-3-fdump-analyzer-exploded-paths-fdump-analyzer-feasibility-fdump-analyzer-json-fdump-analyzer-state-purge-fdump-analyzer-stderr-fdump-analyzer-supergraph-fdump-analyzer-untracked-Wno-analyzer-double-fclose-Wno-analyzer-double-free-Wno-analyzer-exposure-through-output-file-Wno-analyzer-exposure-through-uninit-copy-Wno-analyzer-fd-access-mode-mismatch-Wno-analyzer-fd-double-close-Wno-analyzer-fd-leak-Wno-analyzer-fd-use-after-close-Wno-analyzer-fd-use-without-check-Wno-analyzer-file-leak-Wno-analyzer-free-of-non-heap-Wno-analyzer-imprecise-fp-arithmetic-Wno-analyzer-jump-through-null-Wno-analyzer-malloc-leak-Wno-analyzer-mismatching-deallocation-Wno-analyzer-null-argument-Wno-analyzer-null-dereference-Wno-analyzer-out-of-bounds-Wno-analyzer-possible-null-argument-Wno-analyzer-possible-null-dereference-Wno-analyzer-putenv-of-auto-var-Wno-analyzer-shift-count-negative-Wno-analyzer-shift-count-overflow-Wno-analyzer-stale-setjmp-buffer-Wno-analyzer-tainted-allocation-size-Wno-analyzer-tainted-assertion-Wno-analyzer-tainted-array-index-Wno-analyzer-tainted-divisor-Wno-analyzer-tainted-offset-Wno-analyzer-tainted-size-Wanalyzer-too-complex-Wno-analyzer-unsafe-call-within-signal-handler-Wno-analyzer-use-after-free-Wno-analyzer-use-of-pointer-in-stale-stack-frame-Wno-analyzer-use-of-uninitialized-value-Wno-analyzer-va-arg-type-mismatch-Wno-analyzer-va-list-exhausted-Wno-analyzer-va-list-leak-Wno-analyzer-va-list-use-after-va-end-Wno-analyzer-write-to-const-Wno-analyzer-write-to-string-literal
C and Objective-C-only Warning Options
Debugging Options
See Options for Debugging Your Program.
-g-glevel-gdwarf-gdwarf-version-gbtf-gctf-gctflevel-ggdb-grecord-gcc-switches-gno-record-gcc-switches-gstrict-dwarf-gno-strict-dwarf-gas-loc-support-gno-as-loc-support-gas-locview-support-gno-as-locview-support-gcolumn-info-gno-column-info-gdwarf32-gdwarf64-gstatement-frontiers-gno-statement-frontiers-gvariable-location-views-gno-variable-location-views-ginternal-reset-location-views-gno-internal-reset-location-views-ginline-points-gno-inline-points-gvms-gz=type-gsplit-dwarf-gdescribe-dies-gno-describe-dies-fdebug-prefix-map=old=new-fdebug-types-section-fno-eliminate-unused-debug-types-femit-struct-debug-baseonly-femit-struct-debug-reduced-femit-struct-debug-detailed[=spec-list]-fno-eliminate-unused-debug-symbols-femit-class-debug-always-fno-merge-debug-strings-fno-dwarf2-cfi-asm-fvar-tracking-fvar-tracking-assignments
Optimization Options
See Options That Control Optimization.
-faggressive-loop-optimizations-falign-functions[=n[m:[n2[:m2]]]]-falign-jumps[=n[m:[n2[:m2]]]]-falign-labels[=n[m:[n2[:m2]]]]-falign-loops[=n[m:[n2[:m2]]]]-fno-allocation-dce-fallow-store-data-races-fassociative-math-fauto-profile-fauto-profile[=path]-fauto-inc-dec-fbranch-probabilities-fcaller-saves-fcombine-stack-adjustments-fconserve-stack-fcompare-elim-fcprop-registers-fcrossjumping-fcse-follow-jumps-fcse-skip-blocks-fcx-fortran-rules-fcx-limited-range-fdata-sections-fdce-fdelayed-branch-fdelete-null-pointer-checks-fdevirtualize-fdevirtualize-speculatively-fdevirtualize-at-ltrans-fdse-fearly-inlining-fipa-sra-fexpensive-optimizations-ffat-lto-objects-ffast-math-ffinite-math-only-ffloat-store-fexcess-precision=style-ffinite-loops-fforward-propagate-ffp-contract=style-ffunction-sections-fgcse-fgcse-after-reload-fgcse-las-fgcse-lm-fgraphite-identity-fgcse-sm-fhoist-adjacent-loads-fif-conversion-fif-conversion2-findirect-inlining-finline-functions-finline-functions-called-once-finline-limit=n-finline-small-functions-fipa-modref-fipa-cp-fipa-cp-clone-fipa-bit-cp-fipa-vrp-fipa-pta-fipa-profile-fipa-pure-const-fipa-reference-fipa-reference-addressable-fipa-stack-alignment-fipa-icf-fira-algorithm=algorithm-flive-patching=level-fira-region=region-fira-hoist-pressure-fira-loop-pressure-fno-ira-share-save-slots-fno-ira-share-spill-slots-fisolate-erroneous-paths-dereference-fisolate-erroneous-paths-attribute-fivopts-fkeep-inline-functions-fkeep-static-functions-fkeep-static-consts-flimit-function-alignment-flive-range-shrinkage-floop-block-floop-interchange-floop-strip-mine-floop-unroll-and-jam-floop-nest-optimize-floop-parallelize-all-flra-remat-flto-flto-compression-level-flto-partition=alg-fmerge-all-constants-fmerge-constants-fmodulo-sched-fmodulo-sched-allow-regmoves-fmove-loop-invariants-fmove-loop-stores-fno-branch-count-reg-fno-defer-pop-fno-fp-int-builtin-inexact-fno-function-cse-fno-guess-branch-probability-fno-inline-fno-math-errno-fno-peephole-fno-peephole2-fno-printf-return-value-fno-sched-interblock-fno-sched-spec-fno-signed-zeros-fno-toplevel-reorder-fno-trapping-math-fno-zero-initialized-in-bss-fomit-frame-pointer-foptimize-sibling-calls-fpartial-inlining-fpeel-loops-fpredictive-commoning-fprefetch-loop-arrays-fprofile-correction-fprofile-use-fprofile-use=path-fprofile-partial-training-fprofile-values-fprofile-reorder-functions-freciprocal-math-free-frename-registers-freorder-blocks-freorder-blocks-algorithm=algorithm-freorder-blocks-and-partition-freorder-functions-frerun-cse-after-loop-freschedule-modulo-scheduled-loops-frounding-math-fsave-optimization-record-fsched2-use-superblocks-fsched-pressure-fsched-spec-load-fsched-spec-load-dangerous-fsched-stalled-insns-dep[=n]-fsched-stalled-insns[=n]-fsched-group-heuristic-fsched-critical-path-heuristic-fsched-spec-insn-heuristic-fsched-rank-heuristic-fsched-last-insn-heuristic-fsched-dep-count-heuristic-fschedule-fusion-fschedule-insns-fschedule-insns2-fsection-anchors-fselective-scheduling-fselective-scheduling2-fsel-sched-pipelining-fsel-sched-pipelining-outer-loops-fsemantic-interposition-fshrink-wrap-fshrink-wrap-separate-fsignaling-nans-fsingle-precision-constant-fsplit-ivs-in-unroller-fsplit-loops-fsplit-paths-fsplit-wide-types-fsplit-wide-types-early-fssa-backprop-fssa-phiopt-fstdarg-opt-fstore-merging-fstrict-aliasing-fipa-strict-aliasing-fthread-jumps-ftracer-ftree-bit-ccp-ftree-builtin-call-dce-ftree-ccp-ftree-ch-ftree-coalesce-vars-ftree-copy-prop-ftree-dce-ftree-dominator-opts-ftree-dse-ftree-forwprop-ftree-fre-fcode-hoisting-ftree-loop-if-convert-ftree-loop-im-ftree-phiprop-ftree-loop-distribution-ftree-loop-distribute-patterns-ftree-loop-ivcanon-ftree-loop-linear-ftree-loop-optimize-ftree-loop-vectorize-ftree-parallelize-loops=n-ftree-pre-ftree-partial-pre-ftree-pta-ftree-reassoc-ftree-scev-cprop-ftree-sink-ftree-slsr-ftree-sra-ftree-switch-conversion-ftree-tail-merge-ftree-ter-ftree-vectorize-ftree-vrp-ftrivial-auto-var-init-funconstrained-commons-funit-at-a-time-funroll-all-loops-funroll-loops-funsafe-math-optimizations-funswitch-loops-fipa-ra-fvariable-expansion-in-unroller-fvect-cost-model-fvpt-fweb-fwhole-program-fwpa-fuse-linker-plugin-fzero-call-used-regs--paramname=value-O-O0-O1-O2-O3-Os-Ofast-Og-Oz
Program Instrumentation Options
See Program Instrumentation Options.
-p-pg-fprofile-arcs--coverage-ftest-coverage-fprofile-abs-path-fprofile-dir=path-fprofile-generate-fprofile-generate=path-fprofile-info-section-fprofile-info-section=name-fprofile-note=path-fprofile-prefix-path=path-fprofile-update=method-fprofile-filter-files=regex-fprofile-exclude-files=regex-fprofile-reproducible=[multithreaded|parallel-runs|serial]-fsanitize=style-fsanitize-recover-fsanitize-recover=style-fsanitize-trap-fsanitize-trap=style-fasan-shadow-offset=number-fsanitize-sections=s1,s2,...-fsanitize-undefined-trap-on-error-fbounds-check-fcf-protection=[full|branch|return|none|check]-fharden-compares-fharden-conditional-branches-fstack-protector-fstack-protector-all-fstack-protector-strong-fstack-protector-explicit-fstack-check-fstack-limit-register=reg-fstack-limit-symbol=sym-fno-stack-limit-fsplit-stack-fvtable-verify=[std|preinit|none]-fvtv-counts-fvtv-debug-finstrument-functions-finstrument-functions-once-finstrument-functions-exclude-function-list=sym,sym,...-finstrument-functions-exclude-file-list=file,file,...-fprofile-prefix-map=old=new
Preprocessor Options
See Options Controlling the Preprocessor.
-Aquestion=answer-A-question[=answer]-C-CC-Dmacro[=defn]-dD-dI-dM-dN-dU-fdebug-cpp-fdirectives-only-fdollars-in-identifiers-fexec-charset=charset-fextended-identifiers-finput-charset=charset-flarge-source-files-fmacro-prefix-map=old=new-fmax-include-depth=depth-fno-canonical-system-headers-fpch-deps-fpch-preprocess-fpreprocessed-ftabstop=width-ftrack-macro-expansion-fwide-exec-charset=charset-fworking-directory-H-imacrosfile-includefile-M-MD-MF-MG-MM-MMD-MP-MQ-MT-Mno-modules-no-integrated-cpp-P-pthread-remap-traditional-traditional-cpp-trigraphs-Umacro-undef-Wp,option-Xpreprocessoroption
Assembler Options
See Passing Options to the Assembler.
-Wa,option-Xassembleroption
Linker Options
See Options for Linking.
object-file-name-fuse-ld=linker-llibrary-nostartfiles-nodefaultlibs-nolibc-nostdlib-nostdlib++-eentry--entry=entry-pie-pthread-r-rdynamic-s-static-static-pie-static-libgcc-static-libstdc++-static-libasan-static-libtsan-static-liblsan-static-libubsan-shared-shared-libgcc-symbolic-Tscript-Wl,option-Xlinkeroption-usymbol-zkeyword
Directory Options
See Options for Directory Search.
-Bprefix-Idir-I--idirafterdir-imacrosfile-imultilibdir-iplugindir=dir-iprefixfile-iquotedir-isysrootdir-isystemdir-iwithprefixdir-iwithprefixbeforedir-Ldir-no-canonical-prefixes--no-sysroot-suffix-nostdinc-nostdinc++--sysroot=dir
Code Generation Options
See Options for Code Generation Conventions.
-fcall-saved-reg-fcall-used-reg-ffixed-reg-fexceptions-fnon-call-exceptions-fdelete-dead-exceptions-funwind-tables-fasynchronous-unwind-tables-fno-gnu-unique-finhibit-size-directive-fcommon-fno-ident-fpcc-struct-return-fpic-fPIC-fpie-fPIE-fno-plt-fno-jump-tables-fno-bit-tests-frecord-gcc-switches-freg-struct-return-fshort-enums-fshort-wchar-fverbose-asm-fpack-struct[=n]-fleading-underscore-ftls-model=model-fstack-reuse=reuse_level-ftrampolines-ftrapv-fwrapv-fvisibility=[default|internal|hidden|protected]-fstrict-volatile-bitfields-fsync-libcalls
Developer Options
-dletters-dumpspecs-dumpmachine-dumpversion-dumpfullversion-fcallgraph-info[=su,da]-fchecking-fchecking=n-fdbg-cnt-list-fdbg-cnt=counter-value-list-fdisable-ipa-pass_name-fdisable-rtl-pass_name-fdisable-rtl-pass-name=range-list-fdisable-tree-pass_name-fdisable-tree-pass-name=range-list-fdump-debug-fdump-earlydebug-fdump-noaddr-fdump-unnumbered-fdump-unnumbered-links-fdump-final-insns[=file]-fdump-ipa-all-fdump-ipa-cgraph-fdump-ipa-inline-fdump-lang-all-fdump-lang-switch-fdump-lang-switch-options-fdump-lang-switch-options=filename-fdump-passes-fdump-rtl-pass-fdump-rtl-pass=filename-fdump-statistics-fdump-tree-all-fdump-tree-switch-fdump-tree-switch-options-fdump-tree-switch-options=filename-fcompare-debug[=opts]-fcompare-debug-second-fenable-kind-pass-fenable-kind-pass=range-list-fira-verbose=n-flto-report-flto-report-wpa-fmem-report-wpa-fmem-report-fpre-ipa-mem-report-fpost-ipa-mem-report-fopt-info-fopt-info-options[=file]-fmultiflags-fprofile-report-frandom-seed=string-fsched-verbose=n-fsel-sched-verbose-fsel-sched-dump-cfg-fsel-sched-pipelining-verbose-fstats-fstack-usage-ftime-report-ftime-report-details-fvar-tracking-assignments-toggle-gtoggle-print-file-name=library-print-libgcc-file-name-print-multi-directory-print-multi-lib-print-multi-os-directory-print-prog-name=program-print-search-dirs-Q-print-sysroot-print-sysroot-headers-suffix-save-temps-save-temps=cwd-save-temps=obj-time[=file]
Machine-Dependent Options
See Machine-Dependent Options.
AArch64 Options
-mabi=name-mbig-endian-mlittle-endian-mgeneral-regs-only-mcmodel=tiny-mcmodel=small-mcmodel=large-mstrict-align-mno-strict-align-momit-leaf-frame-pointer-mtls-dialect=desc-mtls-dialect=traditional-mtls-size=size-mfix-cortex-a53-835769-mfix-cortex-a53-843419-mlow-precision-recip-sqrt-mlow-precision-sqrt-mlow-precision-div-mpc-relative-literal-loads-msign-return-address=scope-mbranch-protection=none|standard|pac-ret[+leaf+b-key|bti]-mharden-sls=opts-march=name-mcpu=name-mtune=name-moverride=string-mverbose-cost-dump-mstack-protector-guard=guard-mstack-protector-guard-reg=sysreg-mstack-protector-guard-offset=offset-mtrack-speculation-moutline-atomicsAdapteva Epiphany Options
-mhalf-reg-file-mprefer-short-insn-regs-mbranch-cost=num-mcmove-mnops=num-msoft-cmpsf-msplit-lohi-mpost-inc-mpost-modify-mstack-offset=num-mround-nearest-mlong-calls-mshort-calls-msmall16-mfp-mode=mode-mvect-double-max-vect-align=num-msplit-vecmove-early-m1reg-regAMD GCN Options
-march=gpu-mtune=gpu-mstack-size=bytesARC Options
-mbarrel-shifter-mjli-always-mcpu=cpu-mA6-mARC600-mA7-mARC700-mdpfp-mdpfp-compact-mdpfp-fast-mno-dpfp-lrsr-mea-mno-mpy-mmul32x16-mmul64-matomic-mnorm-mspfp-mspfp-compact-mspfp-fast-msimd-msoft-float-mswap-mcrc-mdsp-packa-mdvbf-mlock-mmac-d16-mmac-24-mrtsc-mswape-mtelephony-mxy-misize-mannotate-align-marclinux-marclinux_prof-mlong-calls-mmedium-calls-msdata-mirq-ctrl-saved-mrgf-banked-regs-mlpc-width=width-G num-mvolatile-cache-mtp-regno=regno-malign-call-mauto-modify-reg-mbbit-peephole-mno-brcc-mcase-vector-pcrel-mcompact-casesi-mno-cond-exec-mearly-cbranchsi-mexpand-adddi-mindexed-loads-mlra-mlra-priority-none-mlra-priority-compact-mlra-priority-noncompact-mmillicode-mmixed-code-mq-class-mRcq-mRcw-msize-level=level-mtune=cpu-mmultcost=num-mcode-density-frame-munalign-prob-threshold=probability-mmpy-option=multo-mdiv-rem-mcode-density-mll64-mfpu=fpu-mrf16-mbranch-indexARM Options
-mapcs-frame-mno-apcs-frame-mabi=name-mapcs-stack-check-mno-apcs-stack-check-mapcs-reentrant-mno-apcs-reentrant-mgeneral-regs-only-msched-prolog-mno-sched-prolog-mlittle-endian-mbig-endian-mbe8-mbe32-mfloat-abi=name-mfp16-format=name-mthumb-interwork-mno-thumb-interwork-mcpu=name-march=name-mfpu=name-mtune=name-mprint-tune-info-mstructure-size-boundary=n-mabort-on-noreturn-mlong-calls-mno-long-calls-msingle-pic-base-mno-single-pic-base-mpic-register=reg-mnop-fun-dllimport-mpoke-function-name-mthumb-marm-mflip-thumb-mtpcs-frame-mtpcs-leaf-frame-mcaller-super-interworking-mcallee-super-interworking-mtp=name-mtls-dialect=dialect-mword-relocations-mfix-cortex-m3-ldrd-mfix-cortex-a57-aes-1742098-mfix-cortex-a72-aes-1655431-munaligned-access-mneon-for-64bits-mslow-flash-data-masm-syntax-unified-mrestrict-it-mverbose-cost-dump-mpure-code-mcmse-mfix-cmse-cve-2021-35465-mstack-protector-guard=guard-mstack-protector-guard-offset=offset-mfdpicAVR Options
-mmcu=mcu-mabsdata-maccumulate-args-mbranch-cost=cost-mcall-prologues-mgas-isr-prologues-mint8-mdouble=bits-mlong-double=bits-mn_flash=size-mno-interrupts-mmain-is-OS_task-mrelax-mrmw-mstrict-X-mtiny-stack-mfract-convert-truncate-mshort-calls-nodevicelib-nodevicespecs-Waddr-space-convert-Wmisspelled-isrBlackfin Options
-mcpu=cpu[-sirevision]-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=n-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-micplbC6X Options
-mbig-endian-mlittle-endian-march=cpu-msim-msdata=sdata-typeCRIS Options
-mcpu=cpu-march=cpu-mtune=cpu-mmax-stack-frame=n-metrax4-metrax100-mpdebug-mcc-init-mno-side-effects-mstack-align-mdata-align-mconst-align-m32-bit-m16-bit-m8-bit-mno-prologue-epilogue-melf-maout-sim-sim2-mmul-bug-workaround-mno-mul-bug-workaroundC-SKY Options
-march=arch-mcpu=cpu-mbig-endian-EB-mlittle-endian-EL-mhard-float-msoft-float-mfpu=fpu-mdouble-float-mfdivdu-mfloat-abi=name-melrw-mistack-mmp-mcp-mcache-msecurity-mtrust-mdsp-medsp-mvdsp-mdiv-msmart-mhigh-registers-manchor-mpushpop-mmultiple-stld-mconstpool-mstack-size-mccrt-mbranch-cost=n-mcse-cc-msched-prolog-msimDarwin Options
-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=version-mkernel-mone-byte-boolDEC Alpha Options
-mno-fp-regs-msoft-float-mieee-mieee-with-inexact-mieee-conformant-mfp-trap-mode=mode-mfp-rounding-mode=mode-mtrap-precision=mode-mbuild-constants-mcpu=cpu-type-mtune=cpu-type-mbwx-mmax-mfix-mcix-mfloat-vax-mfloat-ieee-mexplicit-relocs-msmall-data-mlarge-data-msmall-text-mlarge-text-mmemory-latency=timeeBPF Options
-mbig-endian-mlittle-endian-mkernel=version-mframe-limit=bytes-mxbpf-mco-re-mno-co-re-mjmpext-mjmp32-malu32-mcpu=versionFR30 Options
FT32 Options
-msim-mlra-mnodiv-mft32b-mcompress-mnopmFRV Options
-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=cpuGNU/Linux Options
-mglibc-muclibc-mmusl-mbionic-mandroid-tno-android-cc-tno-android-ldH8/300 Options
-mrelax-mh-ms-mn-mexr-mno-exr-mint32-malign-300HPPA Options
-march=architecture-type-mcaller-copies-mdisable-fpregs-mdisable-indexing-mfast-indirect-calls-mgas-mgnu-ld-mhp-ld-mfixed-range=register-range-mjump-in-delay-mlinker-opt-mlong-calls-mlong-load-store-mno-disable-fpregs-mno-disable-indexing-mno-fast-indirect-calls-mno-gas-mno-jump-in-delay-mno-long-load-store-mno-portable-runtime-mno-soft-float-mno-space-regs-msoft-float-mpa-risc-1-0-mpa-risc-1-1-mpa-risc-2-0-mportable-runtime-mschedule=cpu-type-mspace-regs-msio-mwsio-munix=unix-std-nolibdld-static-threadsIA-64 Options
-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=register-range-mtls-size=tls-size-mtune=cpu-type-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=max-insnsLM32 Options
-mbarrel-shift-enabled-mdivide-enabled-mmultiply-enabled-msign-extend-enabled-muser-enabledLoongArch Options
-march=cpu-type-mtune=cpu-type-mabi=base-abi-type-mfpu=fpu-type-msoft-float-msingle-float-mdouble-float-mbranch-cost=n-mcheck-zero-division-mno-check-zero-division-mcond-move-int-mno-cond-move-int-mcond-move-float-mno-cond-move-float-memcpy-mno-memcpy-mstrict-align-mno-strict-align-mmax-inline-memcpy-size=n-mexplicit-relocs-mno-explicit-relocs-mdirect-extern-access-mno-direct-extern-access-mcmodel=code-modelM32R/D Options
-m32r2-m32rx-m32r-mdebug-malign-loops-mno-align-loops-missue-rate=number-mbranch-cost=number-mmodel=code-size-model-type-msdata=sdata-type-mno-flush-func-mflush-func=name-mno-flush-trap-mflush-trap=number-GnumM32C Options
-mcpu=cpu-msim-memregs=numberM680x0 Options
-march=arch-mcpu=cpu-mtune=tune-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-mlong-jump-table-offsetsMCore Options
-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-incrementMeP Options
-mabsdiff-mall-opts-maverage-mbased=n-mbitops-mc=n-mclip-mconfig=name-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=nMicroBlaze Options
-msoft-float-mhard-float-msmall-divides-mcpu=cpu-mmemcpy-mxl-soft-mul-mxl-soft-div-mxl-barrel-shift-mxl-pattern-compare-mxl-stack-check-mxl-gp-opt-mno-clearbss-mxl-multiply-high-mxl-float-convert-mxl-float-sqrt-mbig-endian-mlittle-endian-mxl-reorder-mxl-mode-app-model-mpic-data-is-text-relativeMIPS Options
-EL-EB-march=arch-mtune=arch-mips1-mips2-mips3-mips4-mips32-mips32r2-mips32r3-mips32r5-mips32r6-mips64-mips64r2-mips64r3-mips64r5-mips64r6-mips16-mno-mips16-mflip-mips16-minterlink-compressed-mno-interlink-compressed-minterlink-mips16-mno-interlink-mips16-mabi=abi-mabicalls-mno-abicalls-mshared-mno-shared-mplt-mno-plt-mxgot-mno-xgot-mgp32-mgp64-mfp32-mfpxx-mfp64-mhard-float-msoft-float-mno-float-msingle-float-mdouble-float-modd-spreg-mno-odd-spreg-mabs=mode-mnan=encoding-mdsp-mno-dsp-mdspr2-mno-dspr2-mmcu-mmno-mcu-meva-mno-eva-mvirt-mno-virt-mxpa-mno-xpa-mcrc-mno-crc-mginv-mno-ginv-mmicromips-mno-micromips-mmsa-mno-msa-mloongson-mmi-mno-loongson-mmi-mloongson-ext-mno-loongson-ext-mloongson-ext2-mno-loongson-ext2-mfpu=fpu-type-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-Gnum-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=setting-msplit-addresses-mno-split-addresses-mexplicit-relocs-mno-explicit-relocs-mcheck-zero-division-mno-check-zero-division-mdivide-traps-mdivide-breaks-mload-store-pairs-mno-load-store-pairs-munaligned-access-mno-unaligned-access-mmemcpy-mno-memcpy-mlong-calls-mno-long-calls-mmad-mno-mad-mimadd-mno-imadd-mfused-madd-mno-fused-madd-nocpp-mfix-24k-mno-fix-24k-mfix-r4000-mno-fix-r4000-mfix-r4400-mno-fix-r4400-mfix-r5900-mno-fix-r5900-mfix-r10000-mno-fix-r10000-mfix-rm7000-mno-fix-rm7000-mfix-vr4120-mno-fix-vr4120-mfix-vr4130-mno-fix-vr4130-mfix-sb1-mno-fix-sb1-mflush-func=func-mno-flush-func-mbranch-cost=num-mbranch-likely-mno-branch-likely-mcompact-branches=policy-mfp-exceptions-mno-fp-exceptions-mvr4130-align-mno-vr4130-align-msynci-mno-synci-mlxc1-sxc1-mno-lxc1-sxc1-mmadd4-mno-madd4-mrelax-pic-calls-mno-relax-pic-calls-mmcount-ra-address-mframe-header-opt-mno-frame-header-optMMIX Options
-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-exitMN10300 Options
-mmult-bug-mno-mult-bug-mno-am33-mam33-mam33-2-mam34-mtune=cpu-type-mreturn-pointer-on-d0-mno-crt0-mrelax-mliw-msetlbMoxie Options
MSP430 Options
-msim-masm-hex-mmcu=-mcpu=-mlarge-msmall-mrelax-mwarn-mcu-mcode-region=-mdata-region=-msilicon-errata=-msilicon-errata-warn=-mhwmult=-minrt-mtiny-printf-mmax-inline-shift=NDS32 Options
-mbig-endian-mlittle-endian-mreduced-regs-mfull-regs-mcmov-mno-cmov-mext-perf-mno-ext-perf-mext-perf2-mno-ext-perf2-mext-string-mno-ext-string-mv3push-mno-v3push-m16bit-mno-16bit-misr-vector-size=num-mcache-block-size=num-march=arch-mcmodel=code-model-mctor-dtor-mrelaxNios II Options
-Gnum-mgpopt=option-mgpopt-mno-gpopt-mgprel-sec=regexp-mr0rel-sec=regexp-mel-meb-mno-bypass-cache-mbypass-cache-mno-cache-volatile-mcache-volatile-mno-fast-sw-div-mfast-sw-div-mhw-mul-mno-hw-mul-mhw-mulx-mno-hw-mulx-mno-hw-div-mhw-div-mcustom-insn=N-mno-custom-insn-mcustom-fpu-cfg=name-mhal-msmallc-msys-crt0=name-msys-lib=name-march=arch-mbmx-mno-bmx-mcdx-mno-cdxNvidia PTX Options
OpenRISC Options
-mboard=name-mnewlib-mhard-mul-mhard-div-msoft-mul-msoft-div-msoft-float-mhard-float-mdouble-float-munordered-float-mcmov-mror-mrori-msext-msfimm-mshftimm-mcmodel=code-modelPDP-11 Options
-mfpu-msoft-float-mac0-mno-ac0-m40-m45-m10-mint32-mno-int16-mint16-mno-int32-msplit-munix-asm-mdec-asm-mgnu-asm-mlrapicoChip Options
-mae=ae_type-mvliw-lookahead=N-msymbol-as-address-mno-inefficient-warningsPowerPC Options
See IBM RS/6000 and PowerPC Options.
PRU Options
-mmcu=mcu-minrt-mno-relax-mloop-mabi=variantRISC-V Options
-mbranch-cost=N-instruction-mplt-mno-plt-mabi=ABI-string-mfdiv-mno-fdiv-mdiv-mno-div-misa-spec=ISA-spec-string-march=ISA-string-mtune=processor-string-mpreferred-stack-boundary=num-msmall-data-limit=N-bytes-msave-restore-mno-save-restore-mshorten-memrefs-mno-shorten-memrefs-mstrict-align-mno-strict-align-mcmodel=medlow-mcmodel=medany-mexplicit-relocs-mno-explicit-relocs-mrelax-mno-relax-mriscv-attribute-mno-riscv-attribute-malign-data=type-mbig-endian-mlittle-endian-mstack-protector-guard=guard-mstack-protector-guard-reg=reg-mstack-protector-guard-offset=offset-mcsr-check -mno-csr-checkRL78 Options
-msim-mmul=none-mmul=g13-mmul=g14-mallregs-mcpu=g10-mcpu=g13-mcpu=g14-mg10-mg13-mg14-m64bit-doubles-m32bit-doubles-msave-mduc-in-interruptsRS/6000 and PowerPC Options
-mcpu=cpu-type-mtune=cpu-type-mcmodel=code-model-mpowerpc64-maltivec-mno-altivec-mpowerpc-gpopt-mno-powerpc-gpopt-mpowerpc-gfxopt-mno-powerpc-gfxopt-mmfcrf-mno-mfcrf-mpopcntb-mno-popcntb-mpopcntd-mno-popcntd-mfprnd-mno-fprnd-mcmpb-mno-cmpb-mhard-dfp-mno-hard-dfp-mfull-toc-mminimal-toc-mno-fp-in-toc-mno-sum-in-toc-m64-m32-mxl-compat-mno-xl-compat-mpe-malign-power-malign-natural-msoft-float-mhard-float-mmultiple-mno-multiple-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-mswdiv-msingle-pic-base-mprioritize-restricted-insns=priority-msched-costly-dep=dependence_type-minsert-sched-nops=scheme-mcall-aixdesc-mcall-eabi-mcall-freebsd-mcall-linux-mcall-netbsd-mcall-openbsd-mcall-sysv-mcall-sysv-eabi-mcall-sysv-noeabi-mtraceback=traceback_type-maix-struct-return-msvr4-struct-return-mabi=abi-type-msecure-plt-mbss-plt-mlongcall-mno-longcall-mpltseq-mno-pltseq-mblock-move-inline-limit=num-mblock-compare-inline-limit=num-mblock-compare-inline-loop-limit=num-mno-block-ops-unaligned-vsx-mstring-compare-inline-limit=num-misel-mno-isel-mvrsave-mno-vrsave-mmulhw-mno-mulhw-mdlmzb-mno-dlmzb-mprototype-mno-prototype-msim-mmvme-mads-myellowknife-memb-msdata-msdata=opt-mreadonly-in-sdata-mvxworks-Gnum-mrecip-mrecip=opt-mno-recip-mrecip-precision-mno-recip-precision-mveclibabi=type-mfriz-mno-friz-mpointers-to-nested-functions-mno-pointers-to-nested-functions-msave-toc-indirect-mno-save-toc-indirect-mpower8-fusion-mno-mpower8-fusion-mpower8-vector-mno-power8-vector-mcrypto-mno-crypto-mhtm-mno-htm-mquad-memory-mno-quad-memory-mquad-memory-atomic-mno-quad-memory-atomic-mcompat-align-parm-mno-compat-align-parm-mfloat128-mno-float128-mfloat128-hardware-mno-float128-hardware-mgnu-attribute-mno-gnu-attribute-mstack-protector-guard=guard-mstack-protector-guard-reg=reg-mstack-protector-guard-offset=offset-mprefixed-mno-prefixed-mpcrel-mno-pcrel-mmma-mno-mmma-mrop-protect-mno-rop-protect-mprivileged-mno-privilegedRX Options
-m64bit-doubles-m32bit-doubles-fpu-nofpu-mcpu=-mbig-endian-data-mlittle-endian-data-msmall-data-msim-mno-sim-mas100-syntax-mno-as100-syntax-mrelax-mmax-constant-size=-mint-register=-mpid-mallow-string-insns-mno-allow-string-insns-mjsr-mno-warn-multiple-fast-interrupts-msave-acc-in-interruptsS/390 and zSeries Options
-mtune=cpu-type-march=cpu-type-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-mhtm-mvx-mzvector-mtpf-trace-mno-tpf-trace-mtpf-trace-skip-mno-tpf-trace-skip-mfused-madd-mno-fused-madd-mwarn-framesize-mwarn-dynamicstack-mstack-size-mstack-guard-mhotpatch=halfwords,halfwordsScore Options
-meb-mel-mnhwloop-muls-mmac-mscore5-mscore5u-mscore7-mscore7dSH Options
-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-mb-ml-mdalign-mrelax-mbigtable-mfmovd-mrenesas-mno-renesas-mnomacsave-mieee-mno-ieee-mbitops-misize-minline-ic_invalidate-mpadstruct-mprefergot-musermode-multcost=number-mdiv=strategy-mdivsi3_libfunc=name-mfixed-range=register-range-maccumulate-outgoing-args-matomic-model=atomic-model-mbranch-cost=num-mzdcbranch-mno-zdcbranch-mcbranch-force-delay-slot-mfused-madd-mno-fused-madd-mfsca-mno-fsca-mfsrra-mno-fsrra-mpretend-cmove-mtasSolaris 2 Options
-mclear-hwcap-mno-clear-hwcap-mimpure-text-mno-impure-text-pthreadsSPARC Options
-mcpu=cpu-type-mtune=cpu-type-mcmodel=code-model-mmemory-model=mem-model-m32-m64-mapp-regs-mno-app-regs-mfaster-structs-mno-faster-structs-mflat-mno-flat-mfpu-mno-fpu-mhard-float-msoft-float-mhard-quad-float-msoft-quad-float-mstack-bias-mno-stack-bias-mstd-struct-return-mno-std-struct-return-munaligned-doubles-mno-unaligned-doubles-muser-mode-mno-user-mode-mv8plus-mno-v8plus-mvis-mno-vis-mvis2-mno-vis2-mvis3-mno-vis3-mvis4-mno-vis4-mvis4b-mno-vis4b-mcbcond-mno-cbcond-mfmaf-mno-fmaf-mfsmuld-mno-fsmuld-mpopc-mno-popc-msubxc-mno-subxc-mfix-at697f-mfix-ut699-mfix-ut700-mfix-gr712rc-mlra-mno-lraSystem V Options
V850 Options
-mlong-calls-mno-long-calls-mep-mno-ep-mprolog-function-mno-prolog-function-mspace-mtda=n-msda=n-mzda=n-mapp-regs-mno-app-regs-mdisable-callt-mno-disable-callt-mv850e2v3-mv850e2-mv850e1-mv850es-mv850e-mv850-mv850e3v5-mloop-mrelax-mlong-jumps-msoft-float-mhard-float-mgcc-abi-mrh850-abi-mbig-switchVAX Options
Visium Options
-mdebug-msim-mfpu-mno-fpu-mhard-float-msoft-float-mcpu=cpu-type-mtune=cpu-type-msv-mode-muser-modeVMS Options
-mvms-return-codes-mdebug-main=prefix-mmalloc64-mpointer-size=sizeVxWorks Options
-mrtp-non-static-Bstatic-Bdynamic-Xbind-lazy-Xbind-nowx86 Options
-mtune=cpu-type-march=cpu-type-mtune-ctrl=feature-list-mdump-tune-features-mno-default-mfpmath=unit-masm=dialect-mno-fancy-math-387-mno-fp-ret-in-387-m80387-mhard-float-msoft-float-mno-wide-multiply-mrtd-malign-double-mpreferred-stack-boundary=num-mincoming-stack-boundary=num-mcld-mcx16-msahf-mmovbe-mcrc32-mmwait-mrecip-mrecip=opt-mvzeroupper-mprefer-avx128-mprefer-vector-width=opt-mmove-max=bits-mstore-max=bits-mmmx-msse-msse2-msse3-mssse3-msse4.1-msse4.2-msse4-mavx-mavx2-mavx512f-mavx512pf-mavx512er-mavx512cd-mavx512vl-mavx512bw-mavx512dq-mavx512ifma-mavx512vbmi-msha-maes-mpclmul-mfsgsbase-mrdrnd-mf16c-mfma-mpconfig-mwbnoinvd-mptwrite-mprefetchwt1-mclflushopt-mclwb-mxsavec-mxsaves-msse4a-m3dnow-m3dnowa-mpopcnt-mabm-mbmi-mtbm-mfma4-mxop-madx-mlzcnt-mbmi2-mfxsr-mxsave-mxsaveopt-mrtm-mhle-mlwp-mmwaitx-mclzero-mpku-mthreads-mgfni-mvaes-mwaitpkg-mshstk-mmanual-endbr-mcet-switch-mforce-indirect-call-mavx512vbmi2-mavx512bf16-menqcmd-mvpclmulqdq-mavx512bitalg-mmovdiri-mmovdir64b-mavx512vpopcntdq-mavx5124fmaps-mavx512vnni-mavx5124vnniw-mprfchw-mrdpid-mrdseed-msgx-mavx512vp2intersect-mserialize-mtsxldtrk-mamx-tile-mamx-int8-mamx-bf16-muintr-mhreset-mavxvnni-mavx512fp16-mavxifma-mavxvnniint8-mavxneconvert-mcmpccxadd-mamx-fp16-mprefetchi-mraoint-mcldemote-mms-bitfields-mno-align-stringops-minline-all-stringops-minline-stringops-dynamically-mstringop-strategy=alg-mkl-mwidekl-mmemcpy-strategy=strategy-mmemset-strategy=strategy-mpush-args-maccumulate-outgoing-args-m128bit-long-double-m96bit-long-double-mlong-double-64-mlong-double-80-mlong-double-128-mregparm=num-msseregparm-mveclibabi=type-mvect8-ret-in-mem-mpc32-mpc64-mpc80-mstackrealign-momit-leaf-frame-pointer-mno-red-zone-mno-tls-direct-seg-refs-mcmodel=code-model-mabi=name-maddress-mode=mode-m32-m64-mx32-m16-miamcu-mlarge-data-threshold=num-msse2avx-mfentry-mrecord-mcount-mnop-mcount-m8bit-idiv-minstrument-return=type-mfentry-name=name-mfentry-section=name-mavx256-split-unaligned-load-mavx256-split-unaligned-store-malign-data=type-mstack-protector-guard=guard-mstack-protector-guard-reg=reg-mstack-protector-guard-offset=offset-mstack-protector-guard-symbol=symbol-mgeneral-regs-only-mcall-ms2sysv-xlogues-mrelax-cmpxchg-loop-mindirect-branch=choice-mfunction-return=choice-mindirect-branch-register-mharden-sls=choice-mindirect-branch-cs-prefix-mneeded-mno-direct-extern-accessx86 Windows Options
-mconsole-mcygwin-mno-cygwin-mdll-mnop-fun-dllimport-mthread-municode-mwin32-mwindows-fno-set-stack-executableXstormy16 Options
Xtensa Options
-mconst16-mno-const16-mfused-madd-mno-fused-madd-mforce-no-pic-mserialize-volatile-mno-serialize-volatile-mtext-section-literals-mno-text-section-literals-mauto-litpools-mno-auto-litpools-mtarget-align-mno-target-align-mlongcalls-mno-longcalls-mabi=abi-type-mextra-l32r-costs=cycleszSeries Options