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ЃtUuLH t @ HĈ []A\A]A^A_ÐMILIU Aօufff. ATIUHSH @tQ tH1f D A Imarch=native %:local_cpu_detect(arch) %{!mtune=*:%>mtune=native %:local_cpu_detect(tune)}} %{mtune=native:%>mtune=native %:local_cpu_detect(tune)} --no-add-needed %{!static:--eh-frame-hdr} -pipe ignored because -save-temps specified %<-x %s%> after last input file has no effect unrecognized command line option %qs specs %%rename syntax malformed after %ld characters %s: attempt to rename spec %qs to already defined spec %qs specs unknown %% command after %ld characters specs file malformed after %ld characters spec file has no spec for linking specs %%include syntax malformed after %ld characters specs %s spec was not found to be renamed %qs is an unknown -save-temps option failed to get process times: %m could not open temporary response file %s could not write to temporary response file %s could not close temporary response file %s unable to locate default linker script %qs in the library search paths spec %qs has invalid %<%%0%c%> spec %qs has invalid %<%%W%c%> spec %qs has invalid %<%%x%c%> error in args to spec function %qs spec failure: %<%%*%> has not been initialized by pattern match spec failure: unrecognized spec option %qc no arguments for spec function malformed spec function arguments too many arguments to %%:compare-debug-self-opt % spec-generated switch is just %<-%> %{fdump-final-insns:-fdump-final-insns=.} % multilib select %qs is invalid multilib exclusion %qs is invalid not configured with sysroot headers suffix -pass-exit-codes Exit with highest error code from a phase
--help Display this information
--target-help Display target specific command line options
--help={common|optimizers|params|target|warnings|[^]{joined|separate|undocumented}}[,...]
Display specific types of command line options
(Use '-v --help' to display command line options of sub-processes)
--version Display compiler version information
-dumpspecs Display all of the built in spec strings
-dumpversion Display the version of the compiler
-dumpmachine Display the compiler's target processor
-print-search-dirs Display the directories in the compiler's search path
-print-libgcc-file-name Display the name of the compiler's companion library
-print-file-name= Display the full path to library
-print-prog-name= Display the full path to compiler component
-print-multiarch Display the target's normalized GNU triplet, used as
a component in the library path
-print-multi-directory Display the root directory for versions of libgcc
-print-multi-lib Display the mapping between command line options and
multiple library search directories
-print-multi-os-directory Display the relative path to OS libraries
-print-sysroot Display the target libraries directory
-print-sysroot-headers-suffix Display the sysroot suffix used to find headers
-Wa, Pass comma-separated on to the assembler
-Wp, Pass comma-separated on to the preprocessor
-Wl, Pass comma-separated on to the linker
-Xassembler Pass on to the assembler
-Xpreprocessor Pass on to the preprocessor
-Xlinker Pass on to the linker
-save-temps Do not delete intermediate files
-save-temps= Do not delete intermediate files
-no-canonical-prefixes Do not canonicalize paths when building relative
prefixes to other gcc components
-pipe Use pipes rather than intermediate files
-time Time the execution of each subprocess
-specs= Override built-in specs with the contents of
-std= Assume that the input sources are for
--sysroot= Use as the root directory for headers
and libraries
-B Add to the compiler's search paths
-v Display the programs invoked by the compiler
-### Like -v but options quoted and commands not executed
-E Preprocess only; do not compile, assemble or link
-S Compile only; do not assemble or link
-c Compile and assemble, but do not link
-o Place the output into
-pie Create a position independent executable
-shared Create a shared library
-x Specify the language of the following input files
Permissible languages include: c c++ assembler none
'none' means revert to the default behavior of
guessing the language based on the file's extension
Options starting with -g, -f, -m, -O, -W, or --param are automatically
passed on to the various sub-processes invoked by %s. In order to pass
other options on to these processes the -W options must be used.
For bug reporting instructions, please see:
Copyright %s 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
gcc driver version %s %sexecuting gcc version %s
cannot specify -o with -c, -S or -E with multiple files %s: %s compiler not installed on this system recompiling with -fcompare-debug during -fcompare-debug recompilation %s: could not determine length of compare-debug file %s %s: -fcompare-debug failure (length) %s: could not open compare-debug file %s -fuse-linker-plugin, but %s not found
Linker options
==============
Use "-Wl,OPTION" to pass "OPTION" to the linker.
%s: linker input file unused because linking not done
For bug reporting instructions, please see: %{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)} %{!E:%{!M:%{!MM: %{traditional:%eGNU C no longer supports -traditional without -E} %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i}
cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} %(cc1_options)} %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp: cc1 %(cpp_unique_options) %(cc1_options)}}} %{!fsyntax-only:%(invoke_as)}}}} %{!E:%e-E or -x required when input is from standard input} %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options) %{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)} %{!E:%{!M:%{!MM: %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i}
cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} %(cc1_options) %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}}%V} %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp: cc1 %(cpp_unique_options) %(cc1_options) %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}}%V}}}}}} %{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}} %{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}} %(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only %{E|M|MM:%(cpp_debug_options)} %{!M:%{!MM:%{!E:%{!S:-o %|.s |
as %(asm_debug) %(asm_options) %m.s %A }}}} %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}} %{!S:%{!c:%e-c or -S required for Ada}} gnat1 %{I*} %{k8:-gnatk8} %{Wall:-gnatwa} %{w:-gnatws} %{!Q:-quiet} %{nostdinc*} %{nostdlib*} -dumpbase %{.adb:%b.adb}%{.ads:%b.ads}%{!.adb:%{!.ads:%b.ada}} %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}} %{O*} %{W*} %{w} %{p} %{pg:-p} %{d*} %{f*} %{coverage:-fprofile-arcs -ftest-coverage} %{gnatea:-gnatez} %{g*&m*} %{fRTS=rtp:-mrtp} %{fRTS=rtp-smp:-mrtp} %{fRTS=ravenscar-cert-rtp:-mrtp}%1 %{!S:%{o*:%w%*-gnatO}} %i %{S:%W{o*}%{!o*:-o %b.s}} %{gnatc*|gnats*: -o %j} %{-param*} %{!gnatc*:%{!gnats*:%(invoke_as)}} %{!c:%e-c required for gnat2why} gnat1why %{I*} %{k8:-gnatk8} %{!Q:-quiet} %{nostdinc*} %{nostdlib*} -dumpbase %{.adb:%b.adb}%{.ads:%b.ads}%{!.adb:%{!.ads:%b.ada}} %{o*:-auxbase-strip %*}%{!o*:-auxbase %b} %{a} %{d*} %{f*} %{gnatea:-gnatez} %{g*&m*} %1 %{o*:%w%*-gnatO} %i %{gnatc*|gnats*: -o %j} %{-param*} %{!c:%e-c required for gnat2scil} gnat1scil %{I*} %{k8:-gnatk8} %{!Q:-quiet} %{nostdinc*} %{nostdlib*} -dumpbase %{.adb:%b.adb}%{.ads:%b.ads}%{!.adb:%{!.ads:%b.ada}} %{o*:-auxbase-strip %*}%{!o*:-auxbase %b} %{a} %{d*} %{f*} %{gnatea:-gnatez} %{g*&m*} %1 %{o*:%w%*-gnatO} %i %{gnatc*|gnats*: -o %j} %{-param*} %{E|M|MM:cc1plus -E %(cpp_options) %2 %(cpp_debug_options)} %{!E:%{!M:%{!MM: %{save-temps*|no-integrated-cpp:cc1plus -E %(cpp_options) %2 -o %{save-temps*:%b.ii} %{!save-temps*:%g.ii}
} cc1plus %{save-temps*|no-integrated-cpp:-fpreprocessed %{save-temps*:%b.ii} %{!save-temps*:%g.ii}} %{!save-temps*:%{!no-integrated-cpp:%(cpp_unique_options)}} %(cc1_options) %2 %{!fsyntax-only:%{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch} %W{o*:--output-pch=%*}}%V}}}} %{E|M|MM:cc1plus -E %(cpp_options) %2 %(cpp_debug_options)} %{!E:%{!M:%{!MM: %{save-temps*|no-integrated-cpp:cc1plus -E %(cpp_options) %2 -o %{save-temps*:%b.ii} %{!save-temps*:%g.ii}
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%{.class|.zip|.jar|!fsyntax-only:jc1 %{.java|fsaw-java-file:%U.jar -fsource-filename=%i %FF >FF @xF
EF NFF EF NFF EF NFF $EF NFF )EF NFF NFF xF EF ]FF EF ]FF EF ]FF ]FF hzF 3EF bFF =EF bFF GEF bFF QEF bFF bFF |F .EF qFF 8EF qFF BEF qFF LEF qFF qFF 0~F EF vFF vFF 0F qEF zFF }EF zFF EF zFF EF zFF zFF xF FF F DF FF FF HF FF F DF FF FF F FF @F DF FF DF FF FF F )FF FF F )FF DF FF FF F GF F AF ؐF !GF F )GF PF e>F ؐF 1GF F 8GF PF F ?GF AF F AF F e>F [GF AF cGF AF cGF AF [GF posix ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux / BF jGF AF sGF GF .A../../gcc/cp/g++spec.c -Bstatic -Bdynamic lang_specific_driver --param l1-cache-size=%u --param l2-cache-size=%u i386 winchip2-c6 winchip2 c3-2 c3 i486 pentium core2 pentium4 geode k6 athlon amdfam10 bdver1 bdver2 bdver3 btver1 btver2 nocona prescott core-avx2 atom core-avx-i corei7-avx corei7 -mcx16 -mno-cx16 -msahf -mno-sahf -mmovbe -mno-movbe -maes -mno-aes -mpclmul -mno-pclmul -mpopcnt -mno-popcnt -mabm -mno-abm -mlwp -mno-lwp -mfma -mno-fma -mfma4 -mno-fma4 -mxop -mno-xop -mbmi -mno-bmi -mbmi2 -mno-bmi2 -mtbm -mno-tbm -mavx -mno-avx -mavx2 -mno-avx2 -msse4.2 -mno-sse4.2 -msse4.1 -mno-sse4.1 -mlzcnt -mno-lzcnt -mhle -mno-hle -mrtm -mno-rtm -mrdrnd -mno-rdrnd -mf16c -mno-f16c -mfsgsbase -mno-fsgsbase -mrdseed -mno-rdseed -mprfchw -mno-prfchw -madx -mno-adx -mfxsr -mno-fxsr -mxsave -mno-xsave -mxsaveopt -mno-xsaveopt -mpku -mno-pku pentium-mmx k8-sse3 athlon-4 k6-3 pentium-m pentium3 pentium2 pentiumpro slm --param l1-cache-line-size=%u T@ T@ 6R@ SR@ qS@ F hF UF F pF
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G ../../gcc/opts.c %-*.*s %.*s
COLUMNS %s%s:
[default] %#x [enabled] [disabled] %s
enabled by default invalid --param value %qs -Werror=%s: no option -%s specific optimizers undocumented joined separate dwarf-2 WD }XD WD XD XD WD XD XD XD XD XD set_Wstrict_aliasing print_specific_help G AG QG G F $ G @ + G XG common_handle_option maybe_default_option target_handle_option base sys any none gen: ord: ind: dir: dfn: x Z _ j e F 6 Q R - { } / 1 ~ f N This switch lacks documentation `G 1}G |G 4 G W}G Q}G The following options are target specific The following options control compiler warning messages The following options control optimizations The following options are language-independent The --param option recognizes the following as parameters The following options are specific to just the language The following options are supported by the language The following options are not documented The following options take separate arguments The following options take joined arguments unrecognized include_flags 0x%x passed to print_specific_help The following options are language-related No options with the desired characteristics were found
None found. Use --help=%s to show *all* the options supported by the %s front-end
All options with the desired characteristics have already been displayed
debug format "%s" conflicts with prior selection unrecognised debug output level "%s" debug output level %s is too high argument %qs to %<-femit-struct-debug-detailed%> unknown %<-femit-struct-debug-detailed=dir:...%> must allow at least as much as %<-femit-struct-debug-detailed=ind:...%> argument %qs to %<-femit-struct-debug-detailed%> not recognized argument to %<-O%> should be a non-negative integer, %, % or % section anchors must be disabled when unit-at-a-time is disabled toplevel reorder must be disabled when unit-at-a-time is disabled transactional memory is not supported with non-call exceptions section anchors must be disabled when toplevel reorder is disabled -freorder-blocks-and-partition does not work with exceptions on this architecture -freorder-blocks-and-partition does not support unwind info on this architecture -freorder-blocks-and-partition does not work on this architecture only one -flto-partition value can be specified %<-fsplit-stack%> is not supported by this compiler configuration %s: --param arguments should be of the form NAME=VALUE --help argument %q.*s is ambiguous, please be more specific unrecognized argument to --help= option: %q.*s getting core file size maximum limit: %m setting core file size limit to maximum: %m unrecognized gcc debugging option: %c structure alignment must be a small power of two, not %d unknown stack check parameter "%s" dwarf version %d is not supported ../../gcc/opts-common.c missing argument to %qs -Wno- -W -fno- -f -mno- --debug= -g --machine- --machine-no- --machine= --machine=no- --machine --optimize= -O --std= --std --warn- --warn-no- -- --no- D D D D ĉD HD :D Zq@ Zq@ q@ q@ q@ q@ q@ read_cmdline_option generate_option prune_options generate_canonical_option decode_cmdline_option opt_enum_arg_to_value @5G F5G I5G O5G R5G F X5G a5G d5G F o5G F }5G F 5G F 5G 4@F F 5G 5G F 5G 5G 5G 5G 5G 4@F 5G 5G F5G 5G F5G 5G O5G 5G O5G command line option %qs is not supported by this configuration argument to %qs should be a non-negative integer unrecognized argument in option %qs valid arguments to %qs are: %s options.c global-dynamic initial-exec local-dynamic local-exec gnu2 internal protected byte_loop libcall rep_4byte rep_8byte rep_byte unrolled_loop named_vars acml svml mixed CB priority keep thunk thunk-extern thunk-inline 387+sse 387,sse both sse+387 sse,387 standard every-line once never kernel large medium small sysv att intel -### --CLASSPATH --all-warnings --ansi --assemble --assert assertion missing after %qs --assert= --bootclasspath --classpath --comments --comments-in-macros --compile --coverage --debug --define-macro macro name missing after %qs --define-macro= --dependencies --dump --dump= --dumpbase --dumpdir --encoding --entry --entry= --extdirs --extra-warnings --for-assembler --for-assembler= --for-linker --for-linker= --force-link --force-link= Display this information --help= --imacros missing filename after %qs --imacros= --include --include-barrier --include-directory missing path after %qs --include-directory-after --include-directory-after= --include-directory= --include-prefix --include-prefix= --include-with-prefix --include-with-prefix-after --include-with-prefix-after= --include-with-prefix-before --include-with-prefix-before= --include-with-prefix= --include= --language --language= --library-directory --library-directory= --no-canonical-prefixes --no-integrated-cpp --no-line-commands --no-standard-includes --no-standard-libraries --no-sysroot-suffix --no-warnings --optimize --output --output-class-directory --output-class-directory= --output-pch= --output= --param --param= --pass-exit-codes --pedantic --pedantic-errors --pie --pipe --prefix --prefix= --preprocess --print-file-name --print-file-name= --print-libgcc-file-name --print-multi-directory --print-multi-lib --print-multi-os-directory --print-multiarch --print-prog-name --print-prog-name= --print-search-dirs --print-sysroot --profile --resource --resource= --save-temps --shared --specs 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-fdump- -fdump-ada-spec -fdump-ada-spec-slim -fdump-core -fdump-final-insns -fdump-fortran-optimized -fdump-fortran-original -fdump-go-spec= -fdump-noaddr -fdump-parse-tree -fdump-passes Dump optimization passes -fdump-unnumbered -fdump-unnumbered-links -fdwarf2-cfi-asm -fearly-inlining Perform early inlining -felide-constructors -feliminate-dwarf2-dups -femit-class-debug-always Output a class file -femit-class-files Alias for -femit-class-file -femit-struct-debug-baseonly -femit-struct-debug-detailed= -femit-struct-debug-reduced -fenable- -fenable-assertions -fenable-assertions= -fencoding= -fenforce-eh-specs -fenum-int-equiv -fexceptions Enable exception handling -fexcess-precision= -fexec-charset= -fexpensive-optimizations -fext-numeric-literals -fextdirs= -fextended-identifiers -fextern-tls-init -fexternal-blas -fexternal-templates -ff2c Use f2c calling convention -ffast-math -ffat-lto-objects -ffilelist-file -ffinite-math-only -ffixed- -ffixed-form -ffixed-line-length- -ffixed-line-length-none -ffloat-store -ffor-scope -fforce-addr -fforce-classes-archive-check -fforward-propagate -ffp-contract= -ffpe-trap= -ffree-form -ffree-line-length- -ffree-line-length-none -ffreestanding -ffriend-injection -ffrontend-optimize Enable front end optimization -ffunction-cse -ffunction-sections -fgcse -fgcse-after-reload -fgcse-las -fgcse-lm -fgcse-sm -fgnu-keywords -fgnu-runtime -fgnu-tm -fgnu-unique -fgnu89-inline -fgo-check-divide-overflow -fgo-check-divide-zero -fgo-dump- -fgo-optimize- -fgo-pkgpath= -fgo-prefix= -fgo-relative-import-path= -fgraphite -fgraphite-identity -fguess-branch-probability -fguiding-decls -fhandle-exceptions -fhash-synchronization -fhelp -fhelp= -fhoist-adjacent-loads -fhonor-std -fhosted -fhuge-objects -fident Process #ident directives -fif-conversion -fif-conversion2 -fimplement-inlines -fimplicit-inline-templates -fimplicit-none -fimplicit-templates -findirect-classes -findirect-dispatch -findirect-inlining Perform indirect inlining -finhibit-size-directive -finit-character= -finit-integer= -finit-local-zero -finit-logical= -finit-real= -finline -finline-atomics -finline-functions -finline-limit- -finline-limit= -finline-small-functions -finput-charset= -finstrument-functions -finteger-4-integer-8 -fintrinsic-modules-path -fintrinsic-modules-path= -fipa-cp -fipa-cp-clone -fipa-matrix-reorg -fipa-profile -fipa-pta -fipa-pure-const -fipa-reference -fipa-sra -fipa-struct-reorg -fira-algorithm= -fira-hoist-pressure -fira-loop-pressure -fira-region= -fira-share-save-slots -fira-share-spill-slots -fira-verbose= -fivopts -fjni -fjump-tables -fkeep-inline-dllexport -fkeep-inline-functions -fkeep-static-consts -flabels-ok -flax-vector-conversions -fleading-underscore -floop-block -floop-flatten -floop-interchange -floop-nest-optimize -floop-optimize -floop-parallelize-all Mark all loops as parallel -floop-strip-mine -flto -flto-compression-level= -flto-partition=1to1 -flto-partition=balanced -flto-partition=max -flto-partition=none -flto-report -flto= -fltrans -fltrans-output-list= -fmain= -fmath-errno -fmax-array-constructor= -fmax-errors= -fmax-identifier-length= -fmax-stack-var-size= -fmax-subrecord-length= -fmem-report -fmem-report-wpa -fmerge-all-constants -fmerge-constants -fmerge-debug-strings -fmessage-length= -fmodule-private -fmodulo-sched -fmodulo-sched-allow-regmoves -fmove-loop-invariants -fms-extensions -fmudflap -fmudflapir -fmudflapth -fname-mangling-version- -fnew-abi -fnext-runtime -fnil-receivers -fnon-call-exceptions -fnonansi-builtins -fnonnull-objects -fnothrow-opt -fobjc-abi-version= -fobjc-call-cxx-cdtors -fobjc-direct-dispatch -fobjc-exceptions -fobjc-gc -fobjc-nilcheck -fobjc-sjlj-exceptions -fobjc-std=objc1 -fomit-frame-pointer -fopenmp -foperator-names -fopt-info -fopt-info- -foptimize-register-move -foptimize-sibling-calls -foptimize-strlen -foptional-diags -foutput-class-dir= -fpack-derived -fpack-struct -fpack-struct= -fpartial-inlining Perform partial inlining -fpcc-struct-return -fpch-deps -fpch-preprocess -fpeel-loops Perform loop peeling -fpeephole -fpeephole2 -fpermissive -fpic -fpie -fplan9-extensions -fplugin-arg- -fplugin= Specify a plugin to load -fpost-ipa-mem-report -fpre-ipa-mem-report -fpredictive-commoning -fprefetch-loop-arrays -fpreprocessed -fpretty-templates -fprofile -fprofile-arcs -fprofile-correction -fprofile-dir= -fprofile-generate -fprofile-generate= -fprofile-report -fprofile-use -fprofile-use= -fprofile-values -fprotect-parens -frandom-seed -frandom-seed= -frange-check -freal-4-real-10 -freal-4-real-16 -freal-4-real-8 -freal-8-real-10 -freal-8-real-16 -freal-8-real-4 -frealloc-lhs -freciprocal-math -frecord-gcc-switches -frecord-marker=4 -frecord-marker=8 -frecursive -freduced-reflection -free -freg-struct-return -fregmove -frename-registers -freorder-blocks -freorder-functions -frepack-arrays -freplace-objc-classes -frepo -frequire-return-statement -frerun-cse-after-loop -frerun-loop-opt -fresolution= The resolution file -frounding-math -frtti -fsanitize=address -fsanitize=thread -fsaw-java-file -fsched-dep-count-heuristic -fsched-group-heuristic -fsched-interblock -fsched-last-insn-heuristic -fsched-pressure -fsched-rank-heuristic -fsched-spec -fsched-spec-insn-heuristic -fsched-spec-load -fsched-spec-load-dangerous -fsched-stalled-insns -fsched-stalled-insns-dep -fsched-stalled-insns-dep= -fsched-stalled-insns= -fsched-verbose= -fsched2-use-superblocks -fsched2-use-traces -fschedule-insns -fschedule-insns2 -fsecond-underscore -fsection-anchors -fsee -fsel-sched-pipelining -fselective-scheduling -fselective-scheduling2 -fshort-double -fshort-enums -fshort-wchar -fshow-column -fshrink-wrap -fsign-zero -fsignaling-nans -fsigned-bitfields -fsigned-char Make "char" signed by default -fsigned-zeros -fsingle-precision-constant -fsource-filename= -fsource= -fsplit-ivs-in-unroller -fsplit-stack -fsplit-wide-types -fsquangle -fstack-arrays -fstack-check -fstack-check= -fstack-clash-protection -fstack-limit -fstack-limit-register= -fstack-limit-symbol= -fstack-protector -fstack-protector-all -fstack-protector-strong -fstack-reuse= -fstack-usage -fstats -fstore-check -fstrength-reduce -fstrict-aliasing -fstrict-enums -fstrict-overflow -fstrict-prototype -fstrict-volatile-bitfields -fsync-libcalls -fsyntax-only -ftabstop= -ftarget-help -ftarget= Set the target VM version -ftemplate-backtrace-limit= -ftemplate-depth- -ftemplate-depth= -ftest-coverage -fthis-is-variable -fthread-jumps -fthreadsafe-statics -ftls-model= -ftoplevel-reorder -ftracer -ftrack-macro-expansion -ftrack-macro-expansion= -ftrapping-math -ftrapv -ftree-bit-ccp -ftree-builtin-call-dce -ftree-ccp -ftree-ch -ftree-coalesce-inlined-vars -ftree-coalesce-vars -ftree-copy-prop -ftree-copyrename -ftree-cselim -ftree-dce -ftree-dominator-opts -ftree-dse Enable dead store elimination -ftree-forwprop -ftree-fre -ftree-loop-distribution -ftree-loop-if-convert -ftree-loop-if-convert-stores -ftree-loop-im -ftree-loop-ivcanon -ftree-loop-linear -ftree-loop-optimize -ftree-lrs -ftree-parallelize-loops= -ftree-partial-pre -ftree-phiprop -ftree-pre -ftree-pta -ftree-reassoc -ftree-salias -ftree-scev-cprop -ftree-sink -ftree-slp-vectorize -ftree-slsr -ftree-sra -ftree-store-ccp -ftree-store-copy-prop -ftree-switch-conversion -ftree-tail-merge Enable tail merging on trees -ftree-ter -ftree-vect-loop-version -ftree-vectorize -ftree-vectorizer-verbose= -ftree-vrp -funderscoring -funit-at-a-time -funroll-all-loops -funroll-loops -funsafe-loop-optimizations -funsafe-math-optimizations -funsigned-bitfields -funsigned-char -funswitch-loops Perform loop unswitching -funwind-tables -fuse-atomic-builtins -fuse-boehm-gc -fuse-cxa-atexit -fuse-cxa-get-exception-ptr -fuse-divide-subroutine -fuse-ld=bfd -fuse-ld=gold -fuse-linker-plugin -fvar-tracking Perform variable tracking -fvar-tracking-assignments -fvar-tracking-uninit -fvect-cost-model -fverbose-asm -fversion -fvisibility-inlines-hidden -fvisibility-ms-compat -fvisibility= -fvpt -fvtable-gc -fvtable-thunks -fweak -fweb -fwhole-file -fwhole-program -fwide-exec-charset= -fworking-directory -fwpa -fwrapv -fxref -fzee -fzero-initialized-in-bss -fzero-link -gant Catch typos -gcoff -gdwarf- -gen-decls -ggdb -gnat -gnatO -gno-pubnames -gno-record-gcc-switches -gno-split-dwarf -gno-strict-dwarf -gpubnames -grecord-gcc-switches -gsplit-dwarf -gstabs -gstabs+ -gstrict-dwarf -gvms -gxcoff -gxcoff+ -h -idirafter -iquote -iwithprefix -iwithprefixbefore -k8 Synonym of -gnatk8 -lang-asm -m128bit-long-double sizeof(long double) is 16 -m32 Generate 32bit i386 code -m3dnow -m3dnowa -m64 Generate 64bit x86-64 code -m80387 Use hardware fp -m8bit-idiv -m96bit-long-double sizeof(long double) is 12 -mabi= -maccumulate-outgoing-args -maddress-mode= Use given address mode -malign-double -malign-functions= -malign-jumps= -malign-loops= -malign-stringops -mandroid -march= Generate code for given CPU -masm= Use given assembler dialect -mavx256-split-unaligned-load -mbionic Use Bionic C library -mbranch-cost= -mcld -mcmodel= Use given x86-64 code model -mcpu= -mcrc32 -mdispatch-scheduler -mfancy-math-387 -mfentry -mforce-drap -mfp-ret-in-387 -mfpmath= -mfunction-return= -mfused-madd -mglibc Use GNU C library -mhard-float -mieee-fp -mincoming-stack-boundary= -mindirect-branch-register -mindirect-branch= -minline-all-stringops -mintel-syntax -mlarge-data-threshold= -mlong-double-64 Use 64-bit long double -mlong-double-80 Use 80-bit long double -mmmx -mms-bitfields -mno-align-stringops -mno-fancy-math-387 -mno-push-args -mno-red-zone -mno-sse4 -momit-leaf-frame-pointer -mpc32 -mpc64 -mpc80 -mprefer-avx128 -mpreferred-stack-boundary= Support PREFETCHW instruction -mpush-args Support RDSEED instruction -mrecip -mrecip= -mred-zone -mregparm= -mrtd Alternate calling convention -msoft-float Do not use hardware fp -msse -msse2 -msse2avx -msse3 -msse4 -msse4a -msse5 %<-msse5%> was removed -msseregparm -mssse3 -mstack-arg-probe Enable stack probing -mstackrealign Realign stack in prologue -mstringop-strategy= -mtls-dialect= -mtls-direct-seg-refs -mtune= Schedule code for given CPU -muclibc Use uClibc C library -mveclibabi= Vector library ABI to use -mvect8-ret-in-mem -mvzeroupper -mx32 Generate 32bit x86-64 code Support XSAVEOPT instruction -n -nocpp Disable preprocessing -nodefaultlibs -nostartfiles -nostdinc -nostdinc++ -nostdlib -p Enable function profiling -pg -posix -print-objc-runtime-info -print-sysroot-headers-suffix -pthread -r -rdynamic -remap -s -s-bc-abi -save-temps= Create a shared library -shared-libgcc -static-libasan -static-libgcc -static-libgcj -static-libgfortran -static-libgo -static-libstdc++ -static-libtsan -std=c++03 -std=c++0x -std=c++11 -std=c++1y -std=c++98 -std=c11 -std=c1x -std=c89 -std=c90 -std=c99 -std=c9x -std=f2003 -std=f2008 -std=f2008ts -std=f95 -std=gnu -std=gnu++03 -std=gnu++0x -std=gnu++11 -std=gnu++1y -std=gnu++98 -std=gnu11 -std=gnu1x -std=gnu89 -std=gnu90 -std=gnu99 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If just is given, is taken to be 1 -F Add to the end of the main framework include path Print the name of header files as they are used -I Add to the end of the main include path -J Put MODULE files in 'directory' Generate make dependencies and compile -MF Write dependency output to the given file Treat missing header files as generated files Like -M but ignore system header files Like -MD but ignore system header files Generate phony targets for all headers -MQ Add a MAKE-quoted target missing makefile target after %qs -MT Add an unquoted target -O Set optimization level to Optimize for speed disregarding exact standards compliance Optimize for debugging experience rather than speed or size Optimize for space rather than speed Do not generate #line directives This switch is deprecated; use -Wextra instead Warn about things that will change when compiling with an ABI-compliant compiler Warn if a subobject has an abi_tag attribute that the complete object type does not have Warn about suspicious uses of memory addresses Warn about returning structures, unions or arrays -Waggressive-loop-optimizations Warn if a loop with constant number of iterations triggers undefined behavior Warn about possible aliasing of dummy arguments Warn about alignment of COMMON blocks Warn about missing ampersand in continued character constants Warn if an array is accessed out of bounds Warn about creation of array temporaries Warn whenever an Objective-C assignment is being intercepted by the garbage collector Warn about inappropriate attribute usage Warn about casting functions to incompatible types Warn when a built-in preprocessor macro is undefined or redefined Warn about C constructs that are not in the common subset of C and C++ Deprecated in favor of -Wc++11-compat Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011 Warn if the type of a variable might be not interoperable with C Warn about pointer casts which increase alignment Warn about casts which discard qualifiers Warn about subscripts whose type is "char" Warn about truncated character expressions Warn about variables that might be changed by "longjmp" or "vfork" Warn about possibly nested block comments, and C++ comments spanning more than one physical line Warn about equality comparisons involving REAL or COMPLEX expressions Warn for implicit type conversions that may change a value Warn about most implicit conversions Warn for converting NULL from/to a non-pointer type Warn in case profiles in -fprofile-use do not match Warn when a #warning directive is encountered Warn when all constructors and destructors are private Warn when a declaration is found after a statement Warn about deleting polymorphic objects with non-virtual destructors Warn if a deprecated compiler feature, class, method, or field is used Warn about uses of __attribute__((deprecated)) declarations Warn when an optimization pass is disabled Warn about compile-time integer division by zero Warn about implicit conversions from "float" to "double" Warn about violations of Effective C++ style rules Warn about an empty body in an if or else statement Warn about stray tokens after #elif and #endif Warn about comparison of different enum types -Werror-implicit-function-declaration This switch is deprecated; use -Werror=implicit-function-declaration instead Treat specified warning as error Print extra (possibly unwanted) warnings Warn if deprecated empty statements are found Exit on the first error occurred Warn if testing floating point numbers for equality Warn about printf/scanf/strftime/strfmon format string anomalies Warn about format strings that contain NUL bytes Warn if passing too many arguments to a function for its format string Warn about format strings that are not literals Warn about possible security problems with format functions Warn about strftime formats yielding 2-digit years Warn about zero-length formats -Wframe-larger-than= Warn if a function's stack frame requires more than bytes Warn when attempting to free a non-heap object Warn about function call elimination Warn whenever type qualifiers are ignored. Warn about implicit declarations -Wimplicit-function-declaration Warn about implicit function declarations Warn when a declaration does not specify a type Warn about calls with implicit interface Warn about called procedures not explicitly declared Warn about C++11 inheriting constructors when the base has a variadic constructor Warn about variables which are initialized to themselves Warn when an inlined function cannot be inlined Warn when there is a cast to a pointer from an integer of a different size Warn if a user-procedure has the same name as an intrinsic Warn on intrinsics not part of the selected standard Warn when an atomic memory model parameter is known to be outside the valid range. Warn about invalid uses of the "offsetof" macro Warn about PCH files that are found but not used Warn when a jump misses a variable initialization -Wlarger-than= Warn if an object is larger than bytes Warn about truncated source lines Warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore. Warn when a logical operator is suspiciously always evaluating to true or false Do not warn about using "long long" when -pedantic Warn about suspicious declarations of "main" Warn about maybe uninitialized automatic variables Warn about possibly missing braces around initializers Warn about global functions without previous declarations Warn about missing fields in struct initializers Warn about user-specified include directories that do not exist Warn about function parameters declared without a type specifier in K&R-style functions Warn about global functions without prototypes Warn about constructs not instrumented by -fmudflap Warn about use of multi-character character constants Warn about narrowing conversions within { } that are ill-formed in C++11 Warn about "extern" declarations not at file scope Warn when a noexcept expression evaluates to false even though the expression can't actually throw Warn when non-templatized friend functions are declared within a template Warn about non-virtual destructors Warn about NULL being passed to argument slots marked as requiring non-NULL -Wnormalized= Warn about non-normalised Unicode strings Warn if a C-style cast is used in a program Warn for obsolescent usage in a declaration Warn if an old-style parameter definition is used Warn if .class files are out of date Warn about overflow in arithmetic expressions Warn if a string is longer than the maximum portable length specified by the standard Warn about overloaded virtual function names Warn about overriding initializers without side effects Warn when the packed attribute has no effect on struct layout Warn about packed bit-fields whose offset changed in GCC 4.4 Warn when padding is required to align structure members Warn about possibly missing parentheses Issue warnings needed for strict compliance to the standard Warn when converting the type of pointers to member functions Warn about function pointer arithmetic Warn when a pointer differs in signedness in an assignment Warn when a pointer is cast to an integer of a different size Warn if a property for an Objective-C object has no assign semantics specified Warn if inherited methods are unimplemented Warn about real-literal-constants with 'q' exponent-letter Warn when a left-hand-side array variable is reallocated Warn when a left-hand-side variable is reallocated Warn about multiple declarations of the same object Warn if modifiers are specified when not necessary Warn when the compiler reorders code Warn about returning a pointer/reference to a local or temporary variable. Warn whenever a function's return type defaults to "int" (C), or about inconsistent return types (C++) Warn if a selector has multiple methods Warn about possible violations of sequence point rules Warn when one local variable shadows another Warn about signed-unsigned comparisons Warn for implicit type conversions between signed and unsigned integers Warn when overload promotes from unsigned to signed Warn when not issuing stack smashing protection for some reason Warn if stack usage might be larger than specified amount Warn about code which might break strict aliasing rules Warn about uncasted NULL used as sentinel Warn about optimizations that assume that signed overflow is undefined Warn about unprototyped function declarations Warn if type signatures of candidate methods do not match exactly Warn about functions which might be candidates for __attribute__((const)) Warn about functions which might be candidates for format attributes Warn about functions which might be candidates for __attribute__((noreturn)) Warn about functions which might be candidates for __attribute__((pure)) Warn about "suspicious" constructs Warn about enumerated switches, with no default, missing a case Warn about enumerated switches missing a "default:" statement Warn about all enumerated switches missing a specific case Warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used Deprecated. This switch has no effect Do not suppress warnings from system headers Permit nonconforming uses of the tab character Warn if the pointer in a pointer assignment might outlive its target Warn about features not present in traditional C Warn of prototypes causing type conversions different from what would happen in the absence of prototype Warn whenever a trampoline is generated Warn if trigraphs are encountered that might affect the meaning of the program Warn if a comparison is always true or always false due to the limited range of the data type Warn about @selector()s without previously declared methods Warn if an undefined macro is used in an #if directive Warn about underflow of numerical constant expressions Warn about uninitialized automatic variables Warn about unrecognized pragmas Does nothing. Preserved for backward compatibility. Warn if the loop cannot be optimized due to nontrivial assumptions. Warn about unsuffixed float constants Warn when a function parameter is only set, otherwise unused Warn when a variable is only set, otherwise unused Warn about unused dummy arguments. Warn when a function is unused Warn when typedefs locally defined in a function are not used Warn about macros defined in the main file that are not used Warn when a function parameter is unused Warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value Warn when an expression value is unused Warn when a variable is unused Warn about questionable usage of the macros used to retrieve variable arguments Warn about using variadic macros -Wvector-operation-performance Warn when a vector operation is compiled outside the SIMD Warn if a virtual base has a non-trivial move assignment operator Warn if a variable length array is used Warn when a register variable is declared volatile In C++, nonzero means warn about deprecated conversion from string literals to 'char *'. In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard. -Wzero-as-null-pointer-constant Warn when a literal '0' is used as null pointer A synonym for -std=c89 (for C) or -std=c++98 (for C++) -aux-info Emit declaration information into -d Enable dumps from specific passes of the compiler -dumpbase Set the file basename to be used for dumps -dumpdir Set the directory name to be used for dumps --CLASSPATH Deprecated; use --classpath instead Generate position-independent code if possible (large mode) Generate position-independent code for executables if possible (large mode) Enforce class member access control semantics -fada-spec-parent=unit Dump Ada specs as child units of given parent -faggressive-function-elimination Eliminate multiple function invokations also for impure functions -faggressive-loop-optimizations Aggressively optimize loops using language constraints Enable alignment of COMMON blocks Align labels which are only reached by jumping All intrinsics procedures are available regardless of selected standard switch %qs is no longer supported -fallow-parameterless-variadic-functions Allow variadic functions without named parameter Permit the use of the assert keyword Allow optimization for floating-point arithmetic which may change the result of the operation due to rounding. Generate unwind tables that are exact at each instruction boundary Generate auto-inc/dec instructions Do not treat local variables and COMMON blocks as if they were named in SAVE statements Specify that backslash in string introduces an escape character Produce a backtrace when a runtime error is encountered -fblas-matmul-limit= Size of the smallest matrix for which matmul will use BLAS --bootclasspath= Replace system path Generated should be loaded by bootstrap loader Generate code to check bounds before indexing arrays Replace add, compare, branch with branch on count register Use profiling information for branch probabilities Perform branch target load optimization before prologue / epilogue threading -fbranch-target-load-optimize2 Perform branch target load optimization after prologue / epilogue threading Restrict target load migration not to re-use registers in any basic block -fcall-saved- Mark as being preserved across functions -fcall-used- Mark as being corrupted by function calls Save registers around function calls Where shorter, use canonicalized paths to systems headers. Produce a warning at runtime if a array temporary has been created for a procedure argument Compare the results of several data dependence analyzers. Generate checks for references to NULL -fcheck=[...] Specify which runtime checks are to be performed --classpath= Set class path -fcoarray=[...] Specify which coarray parallelization should be used Looks for opportunities to reduce stack adjustments and stack references. Do not put uninitialized globals in the common section Run only the second compilation of -fcompare-debug -fcompare-debug[=] Compile with and without e.g. -gtoggle, and compare the final-insns dump Perform comparison elimination after register allocation has finished Allow the arguments of the '?' operator to have different types Does nothing. Preserved for backward compatibility. Do not perform optimizations increasing noticeably stack usage -fconst-string-class= Use class for constant strings no class name specified with %qs -fconstexpr-depth= Specify maximum constexpr recursion depth Use big-endian format for unformatted files Use little-endian format for unformatted files Use native format for unformatted files Swap endianness for unformatted files Perform a register copy-propagation optimization pass Use the Cray Pointer extension Perform cross-jumping optimization When running CSE, follow jumps to their targets Complex multiplication and division follow Fortran rules Omit range reduction step when performing complex division Ignore 'D' in column one in fixed form Treat lines with 'D' in column one as comments Place data items into their own section List all available debugging counters with their limits and counts. -fdbg-cnt=:[,:,...] Set the debug counter limit. Use the RTL dead code elimination pass Emit debug annotations during preprocessing Map one directory name to another in debug information Output .debug_types section when using DWARF v4 debuginfo. -fdeduce-init-list enable deduction of std::initializer_list for a template type parameter from a brace-enclosed initializer-list Set the default double precision kind to an 8 byte wide type Set the default integer kind to an 8 byte wide type Set the default real kind to an 8 byte wide type Defer popping functions args from stack until later Attempt to fill delay slots of branch instructions Delete dead instructions that may throw exceptions Delete useless null pointer checks Try to convert virtual calls to direct ones. -fdiagnostics-color=[never|always|auto] Colorize diagnostics Show the source line with a caret indicating the column -fdiagnostics-show-location=[once|every-line] How often to emit source location at the beginning of line-wrapped diagnostics Amend appropriate diagnostic messages with the command line option that controls them -fdisable-[tree|rtl|ipa]-=range1+range2 disables an optimization pass Allow dollar signs in entity names Permit '$' as an identifier character Use the RTL dead store elimination pass -fdump- Dump various compiler internals to a file Write all declarations as Ada code transitively Write all declarations as Ada code for the given file only -fdump-final-insns=filename Dump to filename the insns at the end of translation Display the code tree after front end optimization Display the code tree after parsing -fdump-go-spec=filename Write all declarations to file as Go code Suppress output of addresses in debugging dumps Display the code tree after parsing; deprecated option Suppress output of instruction numbers, line number notes and addresses in debugging dumps Suppress output of previous and next insn numbers in debugging dumps Enable CFI tables via GAS assembler directives. Perform DWARF2 duplicate elimination -feliminate-unused-debug-symbols Perform unused type elimination in debug info -feliminate-unused-debug-types Do not suppress C++ class debug information. -femit-struct-debug-baseonly Aggressive reduced debug info for structs -femit-struct-debug-detailed= Detailed reduced debug info for structs -femit-struct-debug-reduced Conservative reduced debug info for structs -fenable-[tree|rtl|ipa]-=range1+range2 enables an optimization pass --encoding= Choose input encoding (defaults from your locale) Generate code to check exception specifications -fexcess-precision=[fast|standard] Specify handling of excess floating-point precision -fexec-charset= Convert all strings and character constants to character set Perform a number of minor, expensive optimizations Interpret imaginary, fixed-point, or other gnu number suffix as the corresponding number literal rather than a user-defined number literal. --extdirs= Set the extension directory path Permit universal character names (\u and \U) in identifiers Support dynamic initialization of thread-local variables in a different translation unit Specify that an external BLAS library should be used for matmul calls on large-size arrays Output lto objects containing both the intermediate language and binary output. Input file is a file with a list of filenames to compile Assume no NaNs or infinities are generated -ffixed- Mark as being unavailable to the compiler Assume that the source file is fixed form -ffixed-line-length- Use n as character line width in fixed mode Allow arbitrary character line width in fixed mode Don't allocate floats and doubles in extended-precision registers Scope of for-init-statement variables is local to the loop Always check for non gcj generated classes archives Perform a forward propagation pass on RTL -ffp-contract=[off|on|fast] Perform floating-point expression contraction. -ffpe-trap=[...] Stop on following floating point exceptions Assume that the source file is free form -ffree-line-length- Use n as character line width in free mode Allow arbitrary character line width in free mode Do not assume that standard C libraries and "main" exist Inject friend functions into enclosing namespace Allow function addresses to be held in registers Place each function into its own section Perform global common subexpression elimination Perform global common subexpression elimination after register allocation has finished Perform redundant load after store elimination in global common subexpression elimination Perform enhanced load motion during global common subexpression elimination Perform store motion after global common subexpression elimination Recognize GNU-defined keywords Generate code for GNU runtime environment Enable support for GNU transactional memory Use STB_GNU_UNIQUE if supported by the assembler Use traditional GNU semantics for inline functions Add explicit checks for division overflow in INT_MIN / -1 Add explicit checks for division by zero -fgo-dump- Dump Go frontend internal information -fgo-optimize- Turn on optimization passes in the frontend -fgo-pkgpath= Set Go package path -fgo-prefix= Set package-specific prefix for exported Go names -fgo-relative-import-path= Treat a relative import as relative to path Enable in and out of Graphite representation Enable Graphite Identity transformation Enable guessing of branch probabilities -fhandle-exceptions has been renamed -fexceptions (and is now on by default) Assume the runtime uses a hash table to map an object to its synchronization structure Enable hoisting adjacent loads to encourage generating conditional move instructions Assume normal C execution environment Perform conversion of conditional jumps to branchless equivalents Perform conversion of conditional jumps to conditional execution Export functions even if they can be inlined Emit implicit instantiations of inline templates Specify that no implicit typing is allowed, unless overridden by explicit IMPLICIT statements Emit implicit instantiations of templates Generate instances of Class at runtime Use offset tables for virtual method calls Do not generate .size directives -finit-character= Initialize local character variables to ASCII value n -finit-integer= Initialize local integer variables to n Initialize local variables to zero (from g77) -finit-logical= Initialize local logical variables -finit-real= Initialize local real variables Enable inlining of function declared "inline", disabling disables all inlining Inline __atomic operations when a lock free instruction sequence is available. Integrate functions not declared "inline" into their callers when profitable -finline-functions-called-once Integrate functions only required by their single caller -finline-limit= Limit the size of inlined functions to Integrate functions into their callers when code size is known not to grow -finput-charset= Specify the default character set for source files Instrument function entry and exit with profiling calls -finstrument-functions-exclude-file-list= -finstrument-functions-exclude-file-list=filename,... Do not instrument functions listed in files -finstrument-functions-exclude-function-list= -finstrument-functions-exclude-function-list=name,... Do not instrument listed functions Interpret any INTEGER(4) as an INTEGER(8) Specify where to find the compiled intrinsic modules Perform Interprocedural constant propagation Perform cloning to make Interprocedural constant propagation stronger Perform interprocedural profile propagation Perform interprocedural points-to analysis Discover pure and const functions Discover readonly and non addressable static variables Perform interprocedural reduction of aggregates -fira-algorithm=[CB|priority] Set the used IRA algorithm Use IRA based register pressure calculation in RTL hoist optimizations. Use IRA based register pressure calculation in RTL loop optimizations. -fira-region=[one|all|mixed] Set regions for IRA Share slots for saving different hard registers. Share stack slots for spilled pseudo-registers. -fira-verbose= Control IRA's level of diagnostic messages. Optimize induction variables on trees Assume native functions are implemented using JNI Use jump tables for sufficiently large switch statements Don't emit dllexported inline functions unless needed Generate code for functions even if they are fully inlined Emit static const variables even if they are not used Allow implicit conversions between vectors with differing numbers of subparts and/or differing element types. Give external symbols a leading underscore Enable Loop Blocking transformation Enable Loop Interchange transformation Enable the ISL based loop nest optimizer Enable Loop Strip Mining transformation Enable link-time optimization. -flto-compression-level= Use zlib compression level for IL Partition symbols and vars at linktime based on object files they originate from Partition functions and vars at linktime into approximately same sized buckets Put every symbol into separate partition Disable partioning and streaming Report various link-time optimization statistics Link-time optimization with number of parallel jobs or jobserver. Run the link-time optimizer in local transformation (LTRANS) mode. Specify a file to which a list of files output by LTRANS is written. Set errno after built-in math functions -fmax-array-constructor= Maximum number of objects in an array constructor -fmax-errors= Maximum number of errors to report -fmax-identifier-length= Maximum identifier length -fmax-stack-var-size= Size in bytes of the largest array that will be put on the stack -fmax-subrecord-length= Maximum length for subrecords Report on permanent memory allocation Report on permanent memory allocation in WPA only Attempt to merge identical constants and constant variables Attempt to merge identical constants across compilation units Attempt to merge identical debug strings across compilation units -fmessage-length= Limit diagnostics to characters per line. 0 suppresses line-wrapping Set default accessibility of module entities to PRIVATE. Perform SMS based modulo scheduling before the first scheduling pass Perform SMS based modulo scheduling with register moves allowed Move loop invariant computations out of loops Don't warn about uses of Microsoft extensions Add mudflap bounds-checking instrumentation for single-threaded program Ignore read operations when inserting mudflap instrumentation Add mudflap bounds-checking instrumentation for multi-threaded program Generate code for NeXT (Apple Mac OS X) runtime environment Assume that receivers of Objective-C messages may be nil Support synchronous non-call exceptions Treat a throw() exception specification as noexcept to improve code size Specify which ABI to use for Objective-C family code and meta-data generation. Generate special Objective-C methods to initialize/destroy non-POD C++ ivars, if needed Allow fast jumps to the message dispatcher Enable Objective-C exception and synchronization syntax Enable garbage collection (GC) in Objective-C/Objective-C++ programs Enable inline checks for nil receivers with the NeXT runtime and ABI version 2. Enable Objective-C setjmp exception handling runtime Conform to the Objective-C 1.0 language as implemented in GCC 4.0 When possible do not generate stack frames Enable OpenMP (implies -frecursive in Fortran) Recognize C++ keywords like "compl" and "xor" Enable all optimization info dumps on stderr -fopt-info[-=filename] Dump compiler optimization details Do the full register move optimization pass Optimize sibling and tail recursive calls -foptimize-static-class-initialization Enable optimization of static class initialization code Enable string length optimizations on trees Try to lay out derived types as compactly as possible Pack structure members together without holes -fpack-struct= Set initial maximum structure member alignment Return small aggregates in memory, not registers Look for and use PCH files even when preprocessing Enable machine specific peephole optimizations Enable an RTL peephole pass before sched2 Downgrade conformance errors to warnings Generate position-independent code if possible (small mode) Generate position-independent code for executables if possible (small mode) Enable Plan 9 language extensions -fplugin-arg--[=] Specify argument = for plugin Report on memory allocation before interprocedural optimization Run predictive commoning optimization. Generate prefetch instructions, if available, for arrays in loops Treat the input file as already preprocessed -fno-pretty-templates Do not pretty-print template specializations as the template signature followed by the arguments Enable basic program profiling code Insert arc-based program profiling code Enable correction of flow inconsistent profile data input Set the top-level directory for storing the profile data. The default is 'pwd'. Enable common options for generating profile info for profile feedback directed optimizations Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir= Report on consistency of profile Enable common options for performing profile feedback directed optimizations Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir= Insert code to profile values of expressions Protect parentheses in expressions -frandom-seed= Make compile reproducible using Enable range checking during compilation Interpret any REAL(4) as a REAL(10) Interpret any REAL(4) as a REAL(16) Interpret any REAL(4) as a REAL(8) Interpret any REAL(8) as a REAL(10) Interpret any REAL(8) as a REAL(16) Interpret any REAL(8) as a REAL(4) Reallocate the LHS in assignments Same as -fassociative-math for expressions which include division. Record gcc command line switches in the object file. Use a 4-byte record marker for unformatted files Use an 8-byte record marker for unformatted files Allocate local variables on the stack to allow indirect recursion Reduce the amount of reflection meta-data generated Turn on Redundant Extensions Elimination pass. Return small aggregates in registers Enables a register move optimization Perform a register renaming optimization pass Reorder basic blocks to improve code placement -freorder-blocks-and-partition Reorder basic blocks and partition into hot and cold sections Reorder functions to improve code placement Copy array sections into a contiguous block on procedure entry Used in Fix-and-Continue mode to indicate that object files may be swapped in at runtime Enable automatic template instantiation Functions which return values must end with return statements Add a common subexpression elimination pass after loop optimizations -freschedule-modulo-scheduled-loops Enable/Disable the traditional scheduling in loops that already passed modulo scheduling Disable optimizations that assume default FP rounding behavior Generate run time type descriptor information Enable AddressSanitizer, a memory error detector Enable ThreadSanitizer, a data race detector -fsched-critical-path-heuristic Enable the critical path heuristic in the scheduler Enable the dependent count heuristic in the scheduler Enable the group heuristic in the scheduler Enable scheduling across basic blocks Enable the last instruction heuristic in the scheduler Enable register pressure sensitive insn scheduling Enable the rank heuristic in the scheduler Allow speculative motion of non-loads Enable the speculative instruction heuristic in the scheduler Allow speculative motion of some loads Allow speculative motion of more loads Allow premature scheduling of queued insns Set dependence distance checking in premature scheduling of queued insns -fsched-stalled-insns-dep= Set dependence distance checking in premature scheduling of queued insns -fsched-stalled-insns= Set number of queued insns that can be prematurely scheduled -fsched-verbose= Set the verbosity level of the scheduler If scheduling post reload, do superblock scheduling Reschedule instructions before register allocation Reschedule instructions after register allocation Append a second underscore if the name already contains an underscore Access data in the same section from shared anchor points Perform software pipelining of inner loops during selective scheduling -fsel-sched-pipelining-outer-loops Perform software pipelining of outer loops during selective scheduling -fsel-sched-reschedule-pipelined Reschedule pipelined regions without pipelining Schedule instructions using selective scheduling algorithm Run selective scheduling after reload Use the same size for double as for float Use the narrowest integer type possible for enumeration types Force the underlying type for "wchar_t" to be "unsigned short" Show column numbers in diagnostics, when available. Default on Emit function prologues only before parts of the function that need it, rather than at the top of the function. Apply negative sign to zero values Disable optimizations observable by IEEE signaling NaNs When "signed" or "unsigned" is not given make the bitfield signed Disable floating point optimizations that ignore the IEEE signedness of zero Convert floating point constants to single precision constants Set the source language version Split lifetimes of induction variables when loops are unrolled Generate discontiguous stack frames Split wide types into independent registers Put all local arrays on stack. Insert stack checking code into the program. Same as -fstack-check=specific -fstack-check=[no|generic|specific] Insert stack checking code into the program. Insert code to probe each page of stack space as it is allocated to protect from stack-clash style attacks. -fstack-limit-register= Trap if the stack goes past -fstack-limit-symbol= Trap if the stack goes past symbol Use propolice as a stack protection method Use a stack protection method for every function Use a smart stack protection method for certain functions -fstack-reuse=[all|named_vars|none] Set stack reuse level for local variables. Output stack usage information on a per-function basis Display statistics accumulated during compilation Enable assignability checks for stores into object arrays Assume strict aliasing rules apply Assume that values of enumeration type are always within the minimum range of that type Treat signed overflow as undefined Force bitfield accesses to match their type width Implement __atomic operations via libcalls to legacy __sync functions Check for syntax errors, then stop -ftabstop=