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* Improvements to the gcc completion script
@ 2021-03-12  4:07 Jacob Gelbman
  2021-03-19  3:51 ` Jun T
  0 siblings, 1 reply; 9+ messages in thread
From: Jacob Gelbman @ 2021-03-12  4:07 UTC (permalink / raw)
  To: zsh-workers

[-- Attachment #1: gcc.txt --]
[-- Type: text/plain, Size: 144993 bytes --]

#compdef gcc g++ cc c++ llvm-gcc llvm-g++ clang clang++ -value-,LDFLAGS,-default- -value-,CFLAGS,-default- -value-,CXXFLAGS,-default- -value-,CPPFLAGS,-default- -P gcc-* -P g++-* -P c++-*

local curcontext="$curcontext" state line ret=1 expl
local -a args args2 warnings arch
typeset -A opt_args

if [[ "$service" = -value-* ]]; then
  compset -q
  words=( fake "$words[@]" )
  (( CURRENT++ ))
  if [[ "$service" = *LDFLAGS ]]; then
    args2=( '-R:runtime path:->rundir' )
  else
    args2=()
  fi
else
  # On some systems (macOS), cc/gcc/g++ are actually clang; treat them accordingly
  [[ $service != clang* ]] &&
  _pick_variant clang=clang unix --version &&
  service=clang-$service

  args2=( '*:input file:_files' )
fi

args=()
case $MACHTYPE in

m68*)
  args=(
    -m68000 -m68020 -m68020-40 -m68030 -m68040 -m68881
    -mbitfield -mc68000 -mc68020 -mfpa -mnobitfield
    -mrtd -mshort -msoft-float
  )
  ;;

vax)
  args=(
    -mg -mgnu -munix
  )
  ;;

c[1234]*)
  args=(
    -mc1 -mc2 -mc32 -mc34 -mc38
    -margcount -mnoargcount
    -mlong32 -mlong64
    -mvolatile-cache -mvolatile-nocache
  )
  ;;

amd290?0)
  args=(
    -m29000 -m29050 -mbw -mnbw -mdw -mndw
    -mlarge -mnormal -msmall
    -mkernel-registers -mno-reuse-arg-regs
    -mno-stack-check -mno-storem-bug
    -mreuse-arg-regs -msoft-float -mstack-check
    -mstorem-bug -muser-registers
  )
  ;;

arm)
  args=(
    -mapcs -m2 -m3 -m6 -mbsd -mxopen -mno-symrename
    "-faapcs-bitfield-load[all volatile bit-field write generates at least one load]"
    "-faapcs-bitfield-width[volatile bit-field width is dictated by the field container type]"
    "-mcmse[allow use of CMSE]"
    "-mexecute-only[disallow generation of data access to code sections]"
    "-mno-movt[disallow use of movt/movw pairs]"
    "-mno-neg-immediates[disallow converting instructions with negative immediates to their negation]"
    "-mnocrc[disallow use of CRC instructions]"
    "-mrestrict-it[disallow generation of deprecated IT blocks for ARMv8]"
    "-mtp=[thread pointer access method]:arg"
    "-munaligned-access[allow memory accesses to be unaligned]"
  )
  ;;

m88k)
  args=(
    -m88000 -m88100 -m88110 -mbig-pic
    -mcheck-zero-division -mhandle-large-shift
    -midentify-revision -mno-check-zero-division
    -mno-ocs-debug-info -mno-ocs-frame-position
    -mno-optimize-arg-area -mno-serialize-volatile
    -mno-underscores -mocs-debug-info
    -mocs-frame-position -moptimize-arg-area
    -mserialize-volatile -msvr3
    -msvr4 -mtrap-large-shift -muse-div-instruction
    -mversion-03.00 -mwarn-passed-structs
    '-mshort-data--:maximum displacement:'
  )
  ;;

rs6000|powerpc*)
  arch=(rios1 rios2 rsc 501 603 604 power powerpc 403 common)
  args=(
    -mpower -mno-power -mpower2 -mno-power2
    -mpowerpc -mno-powerpc
    -mpowerpc-gpopt -mno-powerpc-gpopt
    -mpowerpc-gfxopt -mno-powerpc-gfxopt
    -mnew-mnemonics -mno-new-mnemonics
    -mfull-toc -mminimal-toc -mno-fop-in-toc -mno-sum-in-toc
    -msoft-float -mhard-float -mmultiple -mno-multiple
    -mstring -mno-string -mbit-align -mno-bit-align
    -mstrict-align -mno-strict-align -mrelocatable -mno-relocatable
    -mtoc -mno-toc -mtraceback -mno-traceback
    -mlittle -mlittle-endian -mbig -mbig-endian
    -mcall-aix -mcall-sysv -mprototype
    '-mcpu=:CPU type:->arch'
    "-maltivec[altivec]"
    "-mcmpb[cmpb]"
    "-mcrbits[crbits]"
    "-mcrypto[crypto]"
    "-mdirect-move[direct move]"
    "-mefpu2[efpu2]"
    "-mfloat128[float128]"
    "-mfprnd[fprnd]"
    "-mhtm[htm]"
    "-minvariant-function-descriptors[invariant function descriptors]"
    "-misel[isel]"
    "-mlongcall[longcall]"
    "-mmfocrf[mfocrf]"
    "-mmfcrf[mfcrf]"
    "-mmma[mma]"
    "-mpaired-vector-memops[paired vector memops]"
    "-mpcrel[pcrel]"
    "-mpopcntd[popcntd]"
    "-mpower10-vector[power10 vector]"
    "-mpower8-vector[power8 vector]"
    "-mpower9-vector[power9 vector]"
    "-mrop-protection[rop protection]"
    "-msecure-plt[secure plt]"
    "-mspe[spe]"
    "-mvsx[vsx]"
  )
  ;;

romp)
  args=(
    -mcall-lib-mul -mfp-arg-in-fpregs -mfp-arg-in-gregs
    -mfull-fp-blocks -mhc-struct-return -min-line-mul
    -mminimum-fp-blocks -mnohc-struct-return
  )
  ;;

mips*)
  arch=(r2000 r3000 r4000 r4400 r4600 r6000)
  args=(
    -membedded-pic -mgas -mgp32 -mgp64 -mhalf-pic -mhard-float -mint64 -mips1
    -mips2 -mips3 -mlong64 -mmemcpy -mmips-as -mmips-tfile -mno-abicalls
    -mno-embedded-data -mno-embedded-pic -mno-gpopt -mno-long-calls -mno-memcpy
    -mno-mips-tfile -mno-rnames -mno-stats -mrnames -msoft-float -m4650 -mmad
    -mstats -nocpp
    '-mcpu=:CPU type:->arch'
    "-mabicalls[enable SVR4-style position-independent code]"
    "-mabs=[abs]:arg"
    "-mcheck-zero-division[check zero division]"
    "-mcompact-branches=[compact branches]:arg"
    "-mdouble-float[double float]"
    "-mdsp[dsp]"
    "-mdspr2[dspr2]"
    "-membedded-data[place constants in the .rodata section instead of the .sdata section]"
    "-mextern-sdata[assume that externally defined data is in the small data]"
    "-mfp32[use 32-bit floating point registers]"
    "-mfp64[use 64-bit floating point registers]"
    "-mginv[ginv]"
    "-mgpopt[use GP relative accesses for symbols known to be in a small data section]"
    "-mindirect-jump=[change indirect jump instructions to inhibit speculation]:arg"
    "-mips16[ips16]"
    "-mldc1-sdc1[ldc1 sdc1]"
    "-mlocal-sdata[extend the -G behaviour to object local data]"
    "-mmadd4[enable the generation of 4-operand madd.s, madd.d, etc]"
    "-mmicromips[micromips]"
    "-mmsa[enable MSA ASE]"
    "-mmt[enable MT ASE]"
    "-mnan=[nan]:arg"
    "-mno-mips16[no mips16]"
    "-msingle-float[single float]"
    "-mvirt[virt]"
    "-mxgot[xgot]"
  )
  ;;

i[3456]86|x86_64)
  arch=(
    native i386 i486 i586 pentium pentium-mmx pentiumpro i686 pentium2 pentium3
    pentium3m pentium-m pentium4 pentium4m prescott nocona core2 corei7 corei7-avx
    core-avx-i core-avx2 atom k6 k6-2 k6-3 athlon athlon-tbird athlon-4 athlon-xp
    athlon-mp k8 opteron athlon64 athlon-fx k8-sse3 opteron-sse3 athlon64-sse3
    amdfam10 barcelona bdver1 bdver2 bdver3 btver1 btver2 winchip-c6 winchip2 c3
    c3-2 geode
  )
  args=(
    '-m128bit-long-double[sizeof(long double) is 16]'
    '-m16[generate 16bit i386 code]'
    '-m32[generate 32bit i386 code]'
    '-m3dnowa[support Athlon 3Dnow! built-in functions]'
    '-m3dnow[support 3DNow! built-in functions]'
    '-m64[generate 64bit x86-64 code]'
    '-m80387[use hardware fp]'
    '-m8bit-idiv[expand 32bit/64bit integer divide into 8bit unsigned integer divide with run-time check]'
    '-m96bit-long-double[sizeof(long double) is 12]'
    '-mabi=-[generate code that conforms to the given ABI]:abi:(ms sysv)'
    '-mabm[support code generation of Advanced Bit Manipulation (ABM) instructions]'
    '-maccumulate-outgoing-args[reserve space for outgoing arguments in the function prologue]'
    '-maddress-mode=-[use given address mode]:address mode:(short long)'
    '-madx[support flag-preserving add-carry instructions]'
    '-maes[support AES built-in functions and code generation]'
    '-malign-data=-[use the given data alignment]:type:(compat abi cacheline)'
    '-malign-double[align some doubles on dword boundary]'
    '-malign-functions=-[function starts are aligned to this power of 2]: **2 base for function alignment: '
    '-malign-jumps=-[jump targets are aligned to this power of 2]: **2 base for jump goal alignment: '
    '-malign-loops=-[loop code aligned to this power of 2]: **2 base for loop alignment: '
    '-malign-stringops[align destination of the string operations]'
    "-mamx-bf16[amx bf16]"
    "-mamx-int8[amx int8]"
    "-mamx-tile[amx tile]"
    '-mandroid[generate code for the Android platform]'
    '-march=-[generate instructions for CPU type]:CPU type:->archgeneric'
    '-masm=-[use given assembler dialect]:asm dialect:(att intel)'
    '-mavx256-split-unaligned-load[split 32-byte AVX unaligned load]'
    '-mavx256-split-unaligned-store[split 32-byte AVX unaligned store]'
    '-mavx2[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and AVX2 built-in functions and code generation]'
    '-mavx5124fmaps[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124FMAPS built- in functions and code generation]'
    '-mavx5124vnniw[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124VNNIW built- in functions and code generation]'
    "-mavx512bf16[avx512bf16]"
    "-mavx512bitalg[avx512bitalg]"
    '-mavx512bw[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512BW built- in functions and code generation]'
    '-mavx512cd[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512CD built- in functions and code generation]'
    '-mavx512dq[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512DQ built- in functions and code generation]'
    '-mavx512er[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512ER built- in functions and code generation]'
    '-mavx512f[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F built-in functions and code generation]'
    '-mavx512ifma[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512IFMA built-in functions and code generation]'
    '-mavx512pf[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512PF built- in functions and code generation]'
    "-mavx512vbmi2[avx512vbmi2]"
    '-mavx512vbmi[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VBMI built-in functions and code generation]'
    '-mavx512vl[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VL built- in functions and code generation]'
    "-mavx512vnni[avx512vnni]"
    "-mavx512vp2intersect[avx512vp2intersect]"
    '-mavx512vpopcntdq[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX512VPOPCNTDQ built-in functions and code generation]'
    '-mavx[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2 and AVX built-in functions and code generation]'
    "-mavxvnni[avxvnni]"
    '-mbionic[use Bionic C library]'
    '-mbmi2[support BMI2 built-in functions and code generation]'
    '-mbmi[support BMI built-in functions and code generation]'
    '-mbranch-cost=-[branches are this expensive (1-5, arbitrary units)]:branch cost (1-5): '
    "-mcldemote[cldemote]"
    '-mcld[generate cld instruction in the function prologue]'
    '-mclflushopt[support CLFLUSHOPT instructions]'
    '-mclwb[support CLWB instruction]'
    '-mclzero[support CLZERO built-in functions and code generation]'
    '-mcmodel=-[use given x86-64 code model]:memory model:(32 small kernel medium large)'
    '-mcpu=-[set CPU type]:CPU type:->arch'
    '-mcrc32[support code generation of crc32 instruction]'
    '-mcx16[support code generation of cmpxchg16b instruction]'
    '-mdispatch-scheduler[do dispatch scheduling if processor is bdver1, bdver2, bdver3, bdver4 or znver1 and Haifa scheduling is selected]'
    "-menqcmd[enqcmd]"
    '-mf16c[support F16C built-in functions and code generation]'
    '-mfancy-math-387[generate sin, cos, sqrt for FPU]'
    '-mfentry[emit profiling counter call at function entry before prologue]'
    '-mfma4[support FMA4 built-in functions and code generation]'
    '-mfma[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and FMA built-in functions and code generation]'
    '-mforce-drap[always use Dynamic Realigned Argument Pointer (DRAP) to realign stack]'
    '-mfpmath=-[generate floating point mathematics using given instruction set]:FPU type:(387 sse sse,387 both)'
    '-mfp-ret-in-387[return values of functions in FPU registers]'
    '-mfsgsbase[support FSGSBASE built-in functions and code generation]'
    '-mfunction-return=-[convert function return to call and return thunk]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mfxsr[support FXSAVE and FXRSTOR instructions]'
    '-mgeneral-regs-only[generate code which uses only the general registers]'
    "-mgfni[gfni]"
    '-mglibc[use GNU C library]'
    '-mhard-float[use hardware fp]'
    '-mhle[support Hardware Lock Elision prefixes]'
    "-mhreset[hreset]"
    '-miamcu[generate code that conforms to Intel MCU psABI]'
    '-mieee-fp[use IEEE math for fp comparisons]'
    '-mincoming-stack-boundary=-[assume incoming stack aligned to this power of 2]:assumed size of boundary: '
    '-mindirect-branch=-[convert indirect call and jump to call and return thunks]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mindirect-branch-register[force indirect call and jump via register]'
    '-minline-all-stringops[inline all known string operations]'
    '-minline-stringops-dynamically[inline memset/memcpy string operations, but perform inline version only for small blocks]'
    "-minvpcid[invpcid]"
    "-mkl[kl]"
    '-mlarge-data-threshold=-[data greater than given threshold will go into .ldata section in x86-64 medium model]:threshold: '
    '-mlong-double-128[use 128-bit long double]'
    '-mlong-double-64[use 64-bit long double]'
    '-mlong-double-80[use 80-bit long double]'
    '-mlwp[support LWP built-in functions and code generation]'
    '-mlzcnt[support LZCNT built-in function and code generation]'
    {'-mmemset-strategy=-','-mmemcpy-strategy=-'}'[specify memcpy expansion strategy when expected size is known]:strategy:'
    '-mmitigate-rop[attempt to avoid generating instruction sequences containing ret bytes]'
    '-mmmx[support MMX built-in functions]'
    '-mmovbe[support code generation of movbe instruction]'
    "-mmovdir64b[movdir64b]"
    "-mmovdiri[movdiri]"
    '-mmpx[support MPX code generation]'
    '-mms-bitfields[use native (MS) bitfield layout]'
    '-mmusl[use musl C library]'
    '-mmwaitx[support MWAITX and MONITORX built-in functions and code generation]'
    '-mno-default[clear all tune features]'
    '-mnop-mcount[generate mcount/__fentry__ calls as nops. To activate they need to be patched in]'
    '-mno-sse4[do not support SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-momit-leaf-frame-pointer[omit the frame pointer in leaf functions]'
    '-mpc32[set 80387 floating-point precision to 32-bit]'
    '-mpc64[set 80387 floating-point precision to 64-bit]'
    '-mpc80[set 80387 floating-point precision to 80-bit]'
    '-mpclmul[support PCLMUL built-in functions and code generation]'
    "-mpconfig[pconfig]"
    '-mpku[support PKU built-in functions and code generation]'
    '-mpopcnt[support code generation of popcnt instruction]'
    '-mprefer-avx128[use 128-bit AVX instructions instead of 256-bit AVX instructions in the auto-vectorizer]'
    '-mpreferred-stack-boundary=-[attempt to keep stack aligned to this power of 2]:size of boundary: '
    '-mprefetchwt1[support PREFETCHWT1 built-in functions and code generation]'
    '-mprfchw[support PREFETCHW instruction]'
    "-mptwrite[ptwrite]"
    '-mpush-args[use push instructions to save outgoing arguments]'
    '-mrdpid[support RDPID built-in functions and code generation]'
    '-mrdrnd[support RDRND built-in functions and code generation]'
    '-mrdseed[support RDSEED instruction]'
    '-mrecip=-[control generation of reciprocal estimates]::instruction:(all none div divf divd rsqrt rsqrtf rsqrtd)' #TODO comma separated and can have !
    '-mrecip[generate reciprocals instead of divss and sqrtss]'
    '-mrecord-mcount[generate __mcount_loc section with all mcount or __fentry__ calls]'
    '-mred-zone[use red-zone in the x86-64 code]'
    '-mreg-alloc=[control the default allocation order of integer registers]:default register allocation order:'
    '-mregparm=-[number of registers used to pass integer arguments]:number of integer argument registers: '
    "-mretpoline-external-thunk[retpoline external thunk]"
    '-mrtd[alternate calling convention]'
    '-mrtm[support RTM built-in functions and code generation]'
    '-msahf[support code generation of sahf instruction in 64bit x86-64 code]'
    "-mserialize[serialize]"
    '-msgx[support SGX built-in functions and code generation]'
    '-msha[support SHA1 and SHA256 built-in functions and code generation]'
    "-mshstk[shstk]"
    '-mskip-rax-setup[skip setting up RAX register when passing variable arguments]'
    '-msoft-float[do not use hardware fp]'
    '-msse2avx[encode SSE instructions with VEX prefix]'
    '-msse2[support MMX, SSE and SSE2 built-in functions and code generation]'
    '-msse3[support MMX, SSE, SSE2 and SSE3 built-in functions and code generation]'
    '-msse4.1[support MMX, SSE, SSE2, SSE3, SSSE3 and SSE4.1 built-in functions and code generation]'
    '-msse4.2[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msse4a[support MMX, SSE, SSE2, SSE3 and SSE4A built-in functions and code generation]'
    '-msse4[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msseregparm[use SSE register passing conventions for SF and DF mode]'
    '-msse[support MMX and SSE built-in functions and code generation]'
    '-mssse3[support MMX, SSE, SSE2, SSE3 and SSSE3 built-in functions and code generation]'
    '-mstack-arg-probe[enable stack probing]'
    '-mstack-protector-guard=-[use given stack-protector guard]:guard:(global tls)'
    '-mstackrealign[realign stack in prologue]'
    '-mstringop-strategy=-[chose strategy to generate stringop using]:stringop strategy:(byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop)'
    '-mstv[disable Scalar to Vector optimization pass transforming 64-bit integer computations into a vector ones]'
    '-mtbm[support TBM built-in functions and code generation]'
    '-mthreads[support thread-safe exception handling on MinGW]'
    '-mtls-dialect=-[use given thread-local storage dialect]:TLS dialect:(gnu gnu2)'
    '-mtls-direct-seg-refs[use direct references against %gs when accessing tls data]'
    "-mtsxldtrk[tsxldtrk]"
    #'-mtune-ctrl=-[fine grain control of tune features]:feature-list:' #for dev use only
    '-mtune=-[tune code for CPU type]:CPU type:->arch'
    '-muclibc[use uClibc C library]'
    "-muintr[uintr]"
    "-mvaes[vaes]"
    '-mveclibabi=-[vector library ABI to use]:vector library ABI:(acml svml)'
    '-mvect8-ret-in-mem[return 8-byte vectors in memory]'
    "-mvpclmulqdq[vpclmulqdq]"
    '-mvzeroupper[generate vzeroupper instruction before a transfer of control flow out of the function]'
    "-mwaitpkg[waitpkg]"
    "-mwbnoinvd[wbnoinvd]"
    "-mwidekl[widekl]"
    '-mx32[generate 32bit x86-64 code]'
    "-mx87[x87]"
    '-mxop[support XOP built-in functions and code generation]'
    '-mxsavec[support XSAVEC instructions]'
    '-mxsaveopt[support XSAVEOPT instruction]'
    '-mxsaves[support XSAVES and XRSTORS instructions]'
    '-mxsave[support XSAVE and XRSTOR instructions]'
  )
  ;;

hppa*)
  args=(
    -mdisable-fpregs -mdisable-indexing -mfast-indirect-calls
    -mgas -mjump-in-delay -mlong-millicode-calls -mno-disable-fpregs
    -mno-disable-indexing -mno-fast-indirect-calls -mno-gas
    -mno-jump-in-delay -mno-millicode-long-calls
    -mno-portable-runtime -mno-soft-float -msoft-float
    -mpa-risc-1-0 -mpa-risc-1-1 -mportable-runtime
    '-mschedule=:code scheduling constraints:(700 7100 7100LC)'
  )
  ;;

i960)
  args=(
    -m{ka,kb,mc,ca,cf,sa,sb}
    -masm-compat -mclean-linkage
    -mcode-align -mcomplex-addr -mleaf-procedures
    -mic-compat -mic2.0-compat -mic3.0-compat
    -mintel-asm -mno-clean-linkage -mno-code-align
    -mno-complex-addr -mno-leaf-procedures
    -mno-old-align -mno-strict-align -mno-tail-call
    -mnumerics -mold-align -msoft-float -mstrict-align
    -mtail-call
  )
  ;;

sparc)
  arch=(
    v7 cypress v8 supersparc sparclite f930 f934 hypersparc sparclite86x sparclet
    tsc701 v9 ultrasparc ultrasparc3
  )
  args=(
    -mapp-regs -mno-app-regs
    -mfpu -mhard-float
    -mno-fpu -msoft-float
    -mhard-quad-float
    -msoft-quad-float
    -mno-unaligned-doubles
    -munaligned-doubles
    -mfaster-structs -mno-faster-structs
    -mimpure-text
    '-mcpu=:CPU type:->arch'
    '-mtune=:CPU type:->arch'
    -mv8plus -mno-v8plus
    -mvis -mno-vis
    -mlittle-endian
    -m32 -m64
    '-mcmodel=:memory model:(medlow medmid medany embmedany)'
    -mstack-bias -mno-stack-bias
    -mv8
    -mcypress -mepilogue -mflat
    -mno-flat
    -mno-epilogue
    -msparclite -msupersparc
    -mmedlow -mmedany
    -mint32 -mint64 -mlong32 -mlong64
  )
  ;;

alpha*)
  args=(
    -mfp-regs -mno-fp-regs -mno-soft-float
    -msoft-float
  )
  ;;

clipper)
  args=(
    -mc300 -mc400
  )
  ;;

h8/300)
  args=(
    -mrelax -mh
  )
  ;;

aarch64)
  args=(
    "-mmark-bti-property[add .note.gnu.property with BTI to assembly files]"
    "-moutline[enable function outlining (AArch64 only)]"
    "-msve-vector-bits=[specify the size in bits of an SVE vector register]:bits"
  )
  ;;

amdgpu)
  args=(
    "-mcumode[specify CU wavefront execution mode]"
    "-mtgsplit[enable threadgroup split execution mode (AMDGPU only)]"
  )
  ;;

hexagon)
  args=(
    "-mieee-rnd-near[ieee rnd near]"
    "-mmemops[enable generation of memop instructions]"
    "-mnvj[enable generation of new-value jumps]"
    "-mnvs[enable generation of new-value stores]"
    "-mpackets[enable generation of instruction packets]"
    "-mhvx[enable Hexagon Vector eXtensions]"
    "-mhvx-length=[set Hexagon Vector Length]:arg"
    "-mhvx=[enable Hexagon Vector eXtensions]:arg"
  )
  ;;

webassembly*)
  args=(
    "-matomics[atomics]"
    "-mbulk-memory[bulk memory]"
    "-mexception-handling[exception handling]"
    "-mmultivalue[multivalue]"
    "-mmutable-globals[mutable globals]"
    "-mnontrapping-fptoint[no ntrapping fptoint]"
    "-mreference-types[reference types]"
    "-msign-ext[sign ext]"
    "-msimd128[simd128]"
    "-mtail-call[tail call]"
    "-munimplemented-simd128[unimplemented simd128]"
    "-mexec-model=[execution model]:arg"
  )
  ;;

riscv)
  args=(
    "-msave-restore[enable using library calls for save and restore]"
  )
  ;;
esac

if [[ "$service" = clang* ]]; then
  args+=(
    "-all_load[undocumented option]"
    "-allowable_client[undocumented option]:argument"
    "--analyzer-no-default-checks[analyzer does no default checks]"
    "--analyzer-output[static analyzer report output format]:format:(html plist plist-multi-file plist-html sarif sarif-html text)"
    "--analyze[run the static analyzer]"
    "-arch[arch]:argument"
    "-arch_errors_fatal[arch errors fatal]"
    "-arch_only[arch only]:argument"
    "-arcmt-migrate-emit-errors[emit ARC errors even if the migrator can fix them]"
    "-arcmt-migrate-report-output[output path for the plist report]:file:_files"
    "-a-[undocumented option]:argument"
    "--autocomplete=[autocomplete]:argument"
    "-bind_at_load[bind at load]"
    "--bootclasspath=[bootclasspath]:arg"
    "-bundle[bundle]"
    "-bundle_loader[bundle loader]:argument"
    "--CLASSPATH=[CLASSPATH]:arg"
    "--classpath=[classpath]:arg"
    "-cl-denorms-are-zero[allow denormals to be flushed to zero]"
    "-cl-fast-relaxed-math[cl fast relaxed math]"
    "-cl-finite-math-only[allow floating-point optimizations]"
    "-cl-fp32-correctly-rounded-divide-sqrt[specify that divide and sqrt are correctly rounded]"
    "-client_name[client name]:argument"
    "-cl-kernel-arg-info[generate kernel argument metadata]"
    "-cl-mad-enable[allow use of less precise MAD computations]"
    "-cl-no-signed-zeros[allow use of no signed zeros computations]"
    "-cl-no-stdinc[disables all standard includes]"
    "-cl-opt-disable[disables all optimizations]"
    "-cl-single-precision-constant[treat double float constant as single precision]"
    "-cl-std=[openCL language standard to compile for]:arg"
    "-cl-strict-aliasing[this option is added for compatibility with OpenCL 1.0]"
    "-cl-uniform-work-group-size[defines that the global work-size be uniform]"
    "-cl-unsafe-math-optimizations[allow unsafe floating-point optimizations]"
    "-compatibility_version[compatibility version]:compatibility version"
    "--config[specifies configuration file]:configuration file:_files"
    "--constant-cfstrings[use constant cfstrings]"
    "--coverage[coverage]"
    "-coverage[coverage]"
    "-cpp[cpp]"
    "--cuda-compile-host-device[compile CUDA code for both host and device]"
    "--cuda-device-only[compile CUDA code for device only]"
    "--cuda-gpu-arch=[cUDA offloading device architecture]:arg"
    "--cuda-host-only[compile CUDA code for host only]"
    "*--cuda-include-ptx=[include ptx for the following gpu architecture]:argument"
    "--cuda-noopt-device-debug[enable device-side debug info generation]"
    "--cuda-path=[cUDA installation path]:arg"
    "--cuda-path-ignore-env[ignore environment variables to detect CUDA installation]"
    "-cuid=[an id for compilation unit]:argument"
    "-current_version[current version]:current version"
    "-cxx-isystem[add directory to the C++ SYSTEM include search path]:directory:_files -/"
    "-dead_strip[dead strip]"
    "-dependency-dot[file to write dot-formatted header dependencies to]:file:_files"
    "-dependency-file[file to write dependency output to]:file:_files"
    "--dyld-prefix=[dyld prefix]:prefix"
    "--dylib_file[dyld file]:file:_files"
    "-dylinker[dylinker]"
    "-dylinker_install_name[dylinker install name]:name"
    "-dynamic[dynamic]"
    "-dynamiclib[dynamic lib]"
    "-EB[big endian]"
    "-EL[little endian]"
    "-emit-ast[emit Clang AST files for source inputs]"
    "-emit-interface-stubs[generate Interface Stub Files]"
    "-emit-llvm[use the LLVM representation for assembler and object files]"
    "-emit-merged-ifs[generate Interface Stub Files, emit merged text not binary]"
    "--emit-static-lib[enable linker job to emit a static library]"
    #"-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang[trivial automatic variable initialization to zero is only here for benchmarks]"
    "--encoding=[encoding]:arg"
    "-exported_symbols_list[exported symbols list]:argument"
    "--extdirs=[extdirs]:arg"
    "--extra-warnings[enable extra warnings]"
    "-faccess-control[access control]"
    "-F+[add directory to framework search path]:framework directory:_files -/"
    "-faddrsig[emit an address-significance table]"
    "-faggressive-function-elimination[aggressive function elimination]"
    "-falign-commons[align commons]"
    "-faligned-allocation[aligned allocation]"
    "-faligned-new[enable C++17 aligned allocation functions]"
    "-fall-intrinsics[all intrinsics]"
    "-fallow-editor-placeholders[treat editor placeholders as valid source code]"
    "-fallow-unsupported[allow unsupported]"
    "-falternative-parameter-statement[enable the old style PARAMETER statement]"
    "-faltivec[altivec]"
    "-fansi-escape-codes[use ANSI escape codes for diagnostics]"
    "-fapple-kext[use Apple's kernel extensions ABI]"
    "-fapple-link-rtlib[force linking the clang builtins runtime library]"
    "-fapple-pragma-pack[enable Apple GCC-compatible #pragma pack handling]"
    "-fapplication-extension[restrict code to those available for App Extensions]"
    "-fasm-blocks[asm blocks]"
    "-fassume-sane-operator-new[assume sane operator new]"
    "-fast[ast]"
    "-fastcp[astcp]"
    "-fastf[astf]"
    "-fautolink[autolink]"
    "-fautomatic[automatic]"
    "-fauto-profile-accurate[auto profile accurate]"
    "-fauto-profile[auto profile]"
    "-fauto-profile=[enable sample-based profile guided optimizations]:arg"
    "-fbackslash[change the interpretation of backslashes in string literals]"
    "-fbacktrace[backtrace]"
    "-fbasic-block-sections=[generate labels for each basic block]:arg"
    "-fbinutils-version=[produced object files can use all ELF features supported by this version]:major.minor"
    "-fblas-matmul-limit=[blas matmul limit]:arg"
    "-fblocks[enable the blocks language feature]"
    "-fbootclasspath=[bootclasspath]:arg"
    "-fborland-extensions[accept non-standard constructs supported by the Borland compiler]"
    "-fbracket-depth=[bracket depth]:arg"
    "-fbuild-session-file=[use the last modification time of <file> as the build session timestamp]:file:_files"
    "-fbuild-session-timestamp=[time when the current build session started]:time since Epoch in seconds"
    "-fbuiltin-module-map[load the clang builtins module map file.]"
    "-fcaret-diagnostics[caret diagnostics]"
    "-fcaret-diagnostics[show diagnostic messages using a caret]"
    "-fcf-protection[cf protection]"
    "-fcf-protection=[instrument control-flow architecture protection. Options: return, branch, full, none]:arg"
    "-fcf-runtime-abi=[cf runtime abi]:arg"
    "-fchar8_t[enable C++ builtin type char8_t]"
    "-fcheck-array-temporaries[check array temporaries]"
    "-fcheck=[check]:arg"
    "-fclang-abi-compat=[attempt to match the ABI of Clang <version>]:version"
    "-fclasspath=[classpath]:arg"
    "-fcoarray=[coarray]:arg"
    "-fcolor-diagnostics[enable colors in diagnostics]"
    "-fcomment-block-commands=[treat each comma separated argument in <arg> as a documentation comment block command]:arg"
    "-fcompile-resource=[compile resource]:arg"
    "-fcomplete-member-pointers[require member pointer base types to be complete if they would be significant under the Microsoft ABI]"
    "-fconstant-cfstrings[constant cfstrings]"
    "-fconstant-string-class=[constant string class]:arg"
    "-fconstexpr-backtrace-limit=[constexpr backtrace limit]:arg"
    "-fconstexpr-depth=[constexpr depth]:arg"
    "-fconstexpr-steps=[constexpr steps]:arg"
    "-fconvergent-functions[assume functions may be convergent]"
    "-fconvert=[convert]:arg"
    "-fcoroutines-ts[enable support for the C++ Coroutines TS]"
    "-fcoverage-compilation-dir=[the compilation directory to embed in the coverage mapping]:arg"
    "-fcoverage-mapping[generate coverage mapping to enable code coverage analysis]"
    "-fcoverage-prefix-map=[remap file source paths in coverage mapping]:arg"
    "-fcrash-diagnostics-dir=[crash diagnostics dir]:arg"
    "-fcray-pointer[cray pointer]"
    "-fcreate-profile[create profile]"
    "-fcs-profile-generate[generate instrumented code to collect context sensitive execution counts]"
    "-fcs-profile-generate=[generate instrumented code to collect context sensitive execution counts]:directory:_files -/"
    "-fc\+\+-static-destructors[c++ static destructors]"
    "-fcuda-approx-transcendentals[use approximate transcendental functions]"
    "-fcuda-flush-denormals-to-zero[flush denormal floating point values to zero in CUDA device mode]"
    "-fcuda-rdc[cuda rdc]"
    "-fcuda-short-ptr[use 32-bit pointers for accessing const/local/shared address spaces]"
    "-fcxx-exceptions[enable C++ exceptions]"
    "-fcxx-modules[cxx modules]"
    "-fdebug-compilation-dir=[the compilation directory to embed in the debug info]:arg"
    "-fdebug-default-version=[default DWARF version to use]:arg"
    "-fdebug-dump-parse-tree[dump the parse tree]"
    "-fdebug-dump-provenance[dump provenance]"
    "-fdebug-dump-symbols[dump symbols after the semantic analysis]"
    "-fdebug-info-for-profiling[emit extra debug info to make sample profile more accurate]"
    "-fdebug-macro[emit macro debug information]"
    "-fdebug-measure-parse-tree[measure the parse tree]"
    "-fdebug-pass-arguments[debug pass arguments]"
    "-fdebug-pass-structure[debug pass structure]"
    "-fdebug-pre-fir-tree[dump the pre-FIR tree]"
    "-fdebug-ranges-base-address[use DWARF base address selection entries in .debug_ranges]"
    "-fdebug-unparse[unparse and stop]"
    "-fdebug-unparse-with-symbols[unparse and stop]"
    "-fdeclspec[allow __declspec as a keyword]"
    "-fdefault-double-8[set the default double precision kind to an 8 byte wide type]"
    "-fdefault-integer-8[set the default integer kind to an 8 byte wide type]"
    "-fdefault-real-8[set the default real kind to an 8 byte wide type]"
    "-fdelayed-template-parsing[parse templated function definitions at the end of the translation unit]"
    "-fdenormal-fp-math=[denormal fp math]:arg"
    "-fdepfile-entry=[depfile entry]:arg"
    "-fdiagnostics-absolute-paths[print absolute paths in diagnostics]"
    "-fdiagnostics-fixit-info[diagnostics fixit info]"
    "-fdiagnostics-fixit-info[supply fixit into with diagnostic messages]"
    "-fdiagnostics-format=[diagnostics format]:arg"
    "-fdiagnostics-hotness-threshold=[prevent optimization remarks from being output if they do not meet threshold]:value"
    "-fdiagnostics-parseable-fixits[print fixits in a machine parseable form]"
    "-fdiagnostics-print-source-range-info[print machine parseable information about source ranges]"
    "-fdiagnostics-print-source-range-info[print source range spans in numeric form]"
    "-fdiagnostics-show-category=[diagnostics show category]:arg"
    "-fdiagnostics-show-hotness[enable profile hotness information in diagnostic line]"
    "-fdiagnostics-show-note-include-stack[display include stacks for diagnostic notes]"
    "-fdiagnostics-show-option[enable -Woption information in diagnostic line]"
    "-fdiagnostics-show-template-tree[print a template comparison tree for differing templates]"
    "-fdigraphs[enable alternative token representations]"
    "-fdirect-access-external-data[don't use GOT indirection to reference external data symbols]"
    "-fdiscard-value-names[discard value names in LLVM IR]"
    "-fd-lines-as-code[d lines as code]"
    "-fd-lines-as-comments[d lines as comments]"
    "-fdollar-ok[dollar ok]"
    "-fdouble-square-bracket-attributes[enable double square bracket attributes]"
    "-fdump-fortran-optimized[dump fortran optimized]"
    "-fdump-fortran-original[dump fortran original]"
    "-fdump-parse-tree[dump parse tree]"
    "-fdwarf-directory-asm[DWARF directory asm]"
    "-fdwarf-exceptions[use DWARF style exceptions]"
    "-felide-constructors[elide constructors]"
    "-felide-type[elide types when printing diagnostics]"
    "-fembed-bitcode=[embed LLVM bitcode (option: off, all, bitcode, marker)]:option"
    "-fembed-bitcode[equivalent to -fembed-bitcode=all]"
    "-fembed-bitcode-marker[equivalent to -fembed-bitcode=marker]"
    "-femit-all-decls[emit all declarations]"
    "-femulated-tls[use emutls functions to access thread_local variables]"
    "-fenable-matrix[enable matrix data type and related builtin functions]"
    "-fencoding=[encoding]:arg"
    "-ferror-limit=[error limit]:arg"
    "-fescaping-block-tail-calls[escaping block tail calls]"
    "-fexperimental-isel[experimental isel]"
    "-fexperimental-new-constant-interpreter[enable the experimental new constant interpreter]"
    "-fexperimental-relative-c\+\+-abi-vtables[use the experimental C++ class ABI for classes with vtables]"
    "-fexperimental-strict-floating-point[enables experimental strict floating point in LLVM]"
    "-fextdirs=[extdirs]:arg"
    "-fexternal-blas[external blas]"
    "-ff2c[f2c]"
    "-ffile-compilation-dir=[the compilation directory to embed in the debug info]:arg"
    "-ffile-prefix-map=[remap file source paths in debug info and predefined preprocessor macros]:arg"
    "-ffine-grained-bitfield-accesses[use separate accesses for consecutive bitfield runs with legal widths and alignments]"
    "-ffinite-loops[assume all loops are finite]"
    "-ffixed-form[process source files in fixed form]"
    "-ffixed-line-length=[set column after which characters are ignored]:arg"
    "-ffixed-point[enable fixed point types]"
    "-fforce-dwarf-frame[always emit a debug frame section]"
    "-fforce-emit-vtables[emits more virtual tables to improve devirtualization]"
    "-fforce-enable-int128[enable support for int128_t type]"
    "-ffor-scope[for scope]"
    "-ffpe-trap=[fpe trap]:arg"
    "-ffp-exception-behavior=[specifies the exception behavior of floating-point operations]:arg"
    "-ffp-model=[controls the semantics of floating-point calculations]:arg"
    "-ffree-form[process source files in free form]"
    "-ffree-line-length-[free line length]:arg"
    "-ffrontend-optimize[frontend optimize]"
    "-fglobal-isel[enables the global instruction selector]"
    "-fgnuc-version=[sets various macros to claim compatibility with the given GCC version]:version"
    "-fgnu-inline-asm[gnu inline asm]"
    "-fgnu-keywords[allow GNU-extension keywords regardless of language standard]"
    "-fgnu-runtime[generate output compatible with the standard GNU Objective-C runtime]"
    "-fgpu-allow-device-init[allow device side init function in HIP]"
    "-fgpu-defer-diag[defer host/device related diagnostic messages for CUDA/HIP]"
    "-fgpu-rdc[generate relocatable device code, also known as separate compilation mode]"
    "-fgpu-sanitize[enable sanitizer for AMDGPU target]"
    "-fheinous-gnu-extensions[heinous GNU extensions]"
    "-fhip-new-launch-api,[-fno-hip-new-launch-api Use new kernel launching API for HIP]"
    "-fhonor-infinites[honor infinites]"
    "-fhonor-infinities[honor infinities]"
    "-fhonor-nans[honor nans]"
    "-fignore-exceptions[enable support for ignoring exception handling constructs]"
    "-filelist[ilelist]:arg"
    "-fimplicit-module-maps[implicit module maps]"
    "-fimplicit-modules[implicit modules]"
    "-fimplicit-none[no implicit typing allowed unless overridden by IMPLICIT statements]"
    "-findirect-virtual-calls[indirect virtual calls]"
    "-finit-character=[init character]:arg"
    "-finit-integer=[init integer]:arg"
    "-finit-local-zero[init local zero]"
    "-finit-logical=[init logical]:arg"
    "-finit-real=[init real]:arg"
    "-finline-hint-functions[inline functions which are (explicitly or implicitly) marked inline]"
    "-finstrument-function-entry-bare[instrument function entry only]"
    "-finstrument-functions-after-inlining[insert the calls after inlining]"
    "-finteger-4-integer-8[integer 4 integer 8]"
    "-fintegrated-as[enable the integrated assembler]"
    "-fintegrated-cc1[run cc1 in-process]"
    "-fintrinsic-modules-path[intrinsic modules path]"
    "-flarge-sizes[use INTEGER(KIND=8) for the result type in size-related intrinsics]"
    "-flat_namespace[flat namespace]"
    "-flegacy-pass-manager[use the legacy pass manager in LLVM]"
    "-flimited-precision=[limited precision]:arg"
    "-flogical-abbreviations[enable logical abbreviations]"
    "-flto=-[generate output files suitable for link time optimization]::style:(full thin)"
    "-flto-jobs=[controls the backend parallelism]:arg"
    "-fmacro-backtrace-limit=[macro backtrace limit]:limit"
    "-fmacro-prefix-map=[remap file source paths in predefined preprocessor macros]:arg"
    "-fmax-array-constructor=[max array constructor]:arg"
    "-fmax-identifier-length[max identifier length]"
    "-fmax-stack-var-size=[max stack var size]:arg"
    "-fmax-subrecord-length=[max subrecord length]:arg"
    "-fmax-tokens=[max total number of preprocessed tokens for -Wmax-tokens]:number"
    "-fmax-type-align=[specify the maximum alignment to enforce on pointers lacking an explicit alignment]:arg"
    "-fmemory-profile[enable heap memory profiling]"
    "-fmemory-profile=[enable heap memory profiling and dump results into <directory>]:directory:_files -/"
    "-fmodule-file-deps[module file deps]"
    "-fmodule-file=[specify the mapping of module name to precompiled module file]:file:_files"
    "-fmodule-implementation-of[module implementation of]:name"
    "-fmodule-map-file=[load this module map file]:file:_files"
    "-fmodule-maps[implicitly search the file system for module map files.]"
    "-fmodule-name=[specify the name of the module to build]:name"
    "-fmodule-private[module private]"
    "-fmodules-cache-path=[specify the module cache path]:directory:_files -/"
    "-fmodules-decluse[require declaration of modules used within a module]"
    "-fmodules-disable-diagnostic-validation[disable validation of the diagnostic options when loading the module]"
    "-fmodules[enable the modules language feature]"
    "-fmodules-ignore-macro=[ignore the definition of the given macro when building and loading modules]:macro"
    "-fmodules-prune-after=[specify the interval after which a module file will be considered unused]:seconds"
    "-fmodules-prune-interval=[specify the interval between attempts to prune the module cache]:seconds"
    "-fmodules-search-all[search even non-imported modules to resolve references]"
    "-fmodules-strict-decluse[requires all headers to be in modules]"
    "-fmodules-ts[enable support for the C++ Modules TS]"
    "-fmodules-user-build-path[specify the module user build path]:directory:_files -/"
    "-fmodules-validate-input-files-content[validate PCM input files based on content if mtime differs]"
    "-fmodules-validate-once-per-build-session[don't verify input files for the modules]"
    "-fmodules-validate-system-headers[validate the system headers that a module depends on when loading the module]"
    "-fms-compatibility[enable full Microsoft Visual C++ compatibility]"
    "-fms-compatibility-version=[microsoft compiler version number]:arg"
    "-fmsc-version=[microsoft compiler version number to report]:arg"
    "-fms-memptr-rep=[ms memptr rep]:arg"
    "-fms-volatile[ms volatile]"
    "-fnested-functions[nested functions]"
    "-fnew-alignment=[specifies the largest alignment guaranteed]:align"
    "-fnext-runtime[next runtime]"
    "-fno-builtin-[disable implicit builtin knowledge of a specific function]:arg"
    "-fno-crash-diagnostics[disable auto-generation of preprocessed source files and a script for reproduction during a clang crash]"
    "-fno-limit-debug-info[no limit debug info]"
    "-fno-max-type-align[no max type align]"
    "-fno_modules-validate-input-files-content[no modules validate input files content]"
    "-fno_pch-validate-input-files-content[no pch validate input files content]"
    "-fno-strict-modules-decluse[no strict modules decluse]"
    "-fno-temp-file[directly create compilation output files]"
    "-fno-working-directory[no working directory]"
    "-fnoxray-link-deps[no xray link deps]"
    "-fobjc-abi-version=-[set Objective-C ABI version]:version"
    "-fobjc-arc-exceptions[use EH-safe code when synthesizing retains and releases in -fobjc-arc]"
    "-fobjc-arc[synthesize retain and release calls for Objective-C pointers]"
    "-fobjc-convert-messages-to-runtime-calls[convert messages to runtime calls]"
    "-fobjc-encode-cxx-class-template-spec[fully encode C++ class template specialization]"
    "-fobjc-exceptions[enable Objective-C exceptions]"
    "-fobjc-infer-related-result-type[infer related result type]"
    "-fobjc-legacy-dispatch[use legacy dispatch]"
    "-fobjc-link-runtime[set link runtime]"
    "-fobjc-nonfragile-abi[set nonfragile abi]"
    "-fobjc-nonfragile-abi-version=-[set nonfragile abi version]:version"
    "-fobjc-runtime=-[specify the target Objective-C runtime kind and version]:runtime"
    "-fobjc-sender-dependent-dispatch[set sender dependent dispatch]"
    "-fobjc-weak[enable ARC-style weak references in Objective-C]"
    "-fopenmp-targets=[specify comma-separated list of triples OpenMP offloading targets to be supported]:targets"
    "-fopenmp-version=[openmp version]:version"
    "-foperator-arrow-depth=[operator arrow depth]:arg"
    "-foperator-names[treat C++ operator name keywords as synonyms for operators]"
    "-foptimization-record-file=[specify the output name of the file containing the optimization remarks]:file:_files"
    "-foptimization-record-passes=[only include passes which match a specified regex]:regex"
    "-force_cpusubtype_ALL[force cpusubtype all]"
    "-force_flat_namespace[force flat namespace]"
    "--force-link=[force link]:arg"
    "-force_load[force load]:argument"
    "-forder-file-instrumentation[generate instrumented code to collect order file]"
    "-foutput-class-dir=[output class dir]:arg"
    "-fpack-derived[pack derived]"
    "-fparse-all-comments[parse all comments]"
    "-fpascal-strings[recognize and construct Pascal-style string literals]"
    "-fpass-plugin=[load pass plugin from a dynamic shared object file]:dsopath"
    "-fpatchable-function-entry=[generate NOPs around function entry]:N,M"
    "-fpch-codegen[generate code for uses of this PCH]"
    "-fpch-debuginfo[generate debug info for types in an object file built from this PCH]"
    "-fpch-instantiate-templates[instantiate templates already while building a PCH]"
    "-fpch-validate-input-files-content[validate PCH input files based on content]"
    "-fprebuilt-implicit-modules[look up implicit modules]"
    "-fprebuilt-module-path=[specify the prebuilt module path]:directory:_files -/"
    "-fpreserve-as-comments[preserve as comments]"
    "-fproc-stat-report=[save subprocess statistics to the given file]:arg"
    "-fprofile-exclude-files=[exclude files from profile]:arg"
    "-fprofile-filter-files=[filter files for profile]:arg"
    "-fprofile-instr-generate[generate instrumented profile]"
    "-fprofile-instr-generate=[generate instrumented profile into file]:file:_files"
    "-fprofile-instr-use[profile instr use]"
    "-fprofile-instr-use=[use instrumentation data for profile-guided optimization]:arg"
    "-fprofile-list=[filename defining the list of items to instrument]:file:_files"
    "-fprofile-remapping-file=[use the remappings described in file in profile]:file:_files"
    "-fprofile-sample-accurate[specifies that the sample profile is accurate]"
    "-fprofile-sample-use[profile sample use]"
    "-fprofile-sample-use=[profile sample use]:arg"
    "-fprofile-update=[set update method of profile counters]:method"
    "-fprotect-parens[protect parens]"
    "-fpseudo-probe-for-profiling[emit pseudo probes for sample profiling]"
    "-framework[include framework found in search path]:framework:->framework"
    "-frange-check[range check]"
    "-freal-4-real-10[real 4 real 10]"
    "-freal-4-real-16[real 4 real 16]"
    "-freal-4-real-8[real 4 real 8]"
    "-freal-8-real-10[real 8 real 10]"
    "-freal-8-real-16[real 8 real 16]"
    "-freal-8-real-4[real 8 real 4]"
    "-frealloc-lhs[realloc lhs]"
    "-frecord-command-line[record command line]"
    "-frecord-marker=[record marker]:arg"
    "-frecursive[recursive]"
    "-fregister-global-dtors-with-atexit[use atexit to register global destructors]"
    "-frelaxed-template-template-args[enable C++17 relaxed template template argument matching]"
    "-frepack-arrays[repack arrays]"
    "-freroll-loops[turn on loop reroller]"
    "-fretain-comments-from-system-headers[retain comments from system headers]"
    "-frewrite-imports[rewrite imports]"
    "-frewrite-includes[rewrite includes]"
    "-frewrite-map-file=[rewrite map file]:arg"
    "-fropi[generate read-only position independent code (ARM only)]"
    "-frtlib-add-rpath[add -rpath with architecture-specific resource directory to the linker flags]"
    "-frtti-data[rtti data]"
    "-frwpi[generate read-write position independent code (ARM only)]"
    "-fsanitize-address-destructor-kind=[set destructor type used in ASan instrumentation]:kind"
    "-fsanitize-address-field-padding=[level of field padding for AddressSanitizer]:arg"
    "-fsanitize-address-globals-dead-stripping[enable linker dead stripping of globals in AddressSanitizer]"
    "-fsanitize-address-poison-custom-array-cookie[enable poisoning array cookies when using custom operator new in AddressSanitizer]"
    "-fsanitize-address-use-after-scope[enable use-after-scope detection in AddressSanitizer]"
    "-fsanitize-address-use-odr-indicator[enable ODR indicator globals]"
    "-fsanitize-blacklist=[path to blacklist file for sanitizers]:arg"
    "-fsanitize-cfi-canonical-jump-tables[make the jump table addresses canonical in the symbol table]"
    "-fsanitize-cfi-cross-dso[enable control flow integrity (CFI) checks for cross-DSO calls]"
    "-fsanitize-cfi-icall-generalize-pointers[generalize pointers in CFI indirect call type signature checks]"
    "-fsanitize-coverage-allowlist=[sanitize coverage allowlist]:arg"
    "-fsanitize-coverage-blacklist=[disable sanitizer coverage instrumentation]:arg"
    "-fsanitize-coverage-blocklist=[sanitize coverage blocklist]:arg"
    "-fsanitize-coverage=[specify the type of coverage instrumentation for Sanitizers]:arg1"
    "-fsanitize-coverage-whitelist=[restrict sanitizer coverage instrumentation]:arg"
    "-fsanitize-hwaddress-abi=[select the HWAddressSanitizer ABI to target]:arg"
    "-fsanitize-link-c\+\+-runtime[sanitize link c++ runtime]"
    "-fsanitize-link-runtime[sanitize link runtime]"
    "-fsanitize-memory-track-origins[enable origins tracking in MemorySanitizer]"
    "-fsanitize-memory-track-origins=[enable origins tracking in MemorySanitizer]:arg"
    "-fsanitize-memory-use-after-dtor[enable use-after-destroy detection in MemorySanitizer]"
    "-fsanitize-minimal-runtime[sanitize minimal runtime]"
    "-fsanitize-recover=[enable recovery for specified sanitizers]:arg1"
    "-fsanitize-recover[equivalent to -fsanitize-recover=all]"
    "-fsanitize-stats[enable sanitizer statistics gathering]"
    "-fsanitize-system-blacklist[path to system blacklist file for sanitizers]:file:_files"
    "-fsanitize-thread-atomics[enable atomic operations instrumentation in ThreadSanitizer (default)]"
    "-fsanitize-thread-func-entry-exit[enable function entry/exit instrumentation in ThreadSanitizer]"
    "-fsanitize-thread-memory-access[enable memory access instrumentation in ThreadSanitizer]"
    "-fsanitize-trap=[enable trapping for specified sanitizers]:arg1"
    "-fsanitize-trap[equivalent to -fsanitize-trap=all]"
    "-fsanitize-undefined-strip-path-components=[strip a given number of path components when emitting check metadata]:number"
    "-fsanitize-undefined-trap-on-error[equivalent to -fsanitize-trap=undefined]"
    "-fsave-optimization-record[generate a YAML optimization record file]"
    "-fsave-optimization-record=[generate an optimization record file in a specific format]:format"
    "-fsecond-underscore[second underscore]"
    "-fseh-exceptions[use SEH style exceptions]"
    "-fsemantic-interposition[semantic interposition]"
    "-fshow-column[show the column]"
    "-fshow-overloads=[which overload candidates to show when overload resolution fails]:arg"
    "-fshow-source-location[show source location]"
    "-fshow-source-location[show the source location]"
    "-fsignaling-math[signaling math]"
    "-fsign-zero[sign zero]"
    "-fsized-deallocation[enable C++14 sized global deallocation functions]"
    "-fsjlj-exceptions[use SjLj style exceptions]"
    "-fslp-vectorize[enable the superword-level parallelism vectorization passes]"
    "-fspell-checking-limit=[spell checking limit]:arg"
    "-fspell-checking[spell checking]"
    "-fsplit-dwarf-inlining[provide minimal debug info in the object]"
    "-fsplit-lto-unit[enables splitting of the LTO unit]"
    "-fsplit-machine-functions[enable late function splitting using profile information]"
    "-fstack-arrays[stack arrays]"
    "-fstack-clash-protection[enable stack clash protection]"
    "-fstack-size-section[emit section containing metadata on function stack sizes]"
    "-fstandalone-debug[emit full debug info for all types used by the program]"
    "-fstrict-float-cast-overflow[assume that overflowing float-to-int casts are undefined]"
    "-fstrict-return[strict return]"
    "-fstrict-vtable-pointers[enable optimizations based on the strict vtables]"
    "-fstruct-path-tbaa[struct path tbaa]"
    "-fsycl[enable SYCL kernels compilation for device]"
    "-fsymbol-partition=[symbol partition]:arg"
    "-fsystem-module[build this module as a system module. only used with -emit-module]"
    "-ftemplate-backtrace-limit=[template backtrace limit]:arg"
    "-ftemplate-depth-[template depth]:arg"
    "-ftemplate-depth=[template depth]:arg"
    "-fterminated-vtables[terminated vtables]"
    "-fthin-link-bitcode=[write minimized bitcode to <file>]:file:_files"
    "-fthinlto-index=[perform ThinLTO importing using provided index]:arg"
    "-fthreadsafe-statics[threadsafe statics]"
    "-ftime-trace-granularity=[minimum time granularity traced by time profiler]:microseconds"
    "-ftime-trace[turn on time profiler]"
    "-ftrap-function=[issue call to specified function rather than a trap instruction]:function name"
    "-ftrapv-handler=[specify the function to be called on overflow]:function name"
    "-ftrigraphs[process trigraph sequences]"
    "-ftrivial-auto-var-init=[initialize trivial automatic stack variables]:arg"
    "-ftrivial-auto-var-init-stop-after=[stop initializing trivial automatic stack variables after the specified number of instances]:arg"
    "-funderscoring[underscoring]"
    "-funique-basic-block-section-names[use unique names for basic block sections]"
    "-funique-internal-linkage-names[uniqueify Internal Linkage Symbol Names]"
    "-funique-section-names[unique section names]"
    "-funit-at-a-time[unit at a time]"
    "-fuse-cuid=[method to generate ids for compilation units for single source offloading languages CUDA and HIP]:argument"
    "-fuse-cxa-atexit[use cxa atexit]"
    "-fuse-init-array[use init array]"
    "-fuse-line-directives[use #line in preprocessed output]"
    "-fvalidate-ast-input-files-content[compute and store the hash of input files used to build an AST]"
    "-fveclib=[use the given vector functions library]:arg"
    "-fvectorize[enable the loop vectorization passes]"
    "-fvirtual-function-elimination[enables dead virtual function elimination optimization]"
    "-fvisibility-dllexport=[the visibility for dllexport defintions]:arg"
    "-fvisibility-externs-dllimport=[the visibility for dllimport external declarations]:arg"
    "-fvisibility-externs-nodllstorageclass=[the visibility for external declarations without an explicit DLL dllstorageclass]:arg"
    "-fvisibility-from-dllstorageclass[set the visiblity of symbols in the generated code from their DLL storage class]"
    "-fvisibility-global-new-delete-hidden[give global C++ operator new and delete declarations hidden visibility]"
    "-fvisibility-inlines-hidden[give inline C++ member functions hidden visibility by default]"
    "-fvisibility-inlines-hidden-static-local-var[visibility inlines hidden static local var]"
    "-fvisibility-ms-compat[give global types and functions a specific visibility]"
    "-fvisibility-nodllstorageclass=[the visibility for defintiions without an explicit DLL export class]:arg"
    "-fwasm-exceptions[use WebAssembly style exceptions]"
    "-fwhole-file[whole file]"
    "-fwhole-program-vtables[enables whole-program vtable optimization]"
    "-fwritable-strings[store string literals as writable data]"
    "-fxl-pragma-pack[enable IBM XL #pragma pack handling]"
    "-fxor-operator[enable .XOR. as a synonym of .NEQV.]"
    "-fxray-always-emit-customevents[always emit xray customevent calls]"
    "-fxray-always-emit-typedevents[always emit xray typedevents calls]"
    "-fxray-always-instrument=[file defining xray always instrument]:file:_files"
    "-fxray-attr-list=[file defining the list of xray attributes]:file:_files"
    "-fxray-function-groups=[only instrument 1 of N groups]:arg"
    "-fxray-function-index[xray function index]"
    "-fxray-ignore-loops[don't instrument functions with loops unless they also meet the minimum function size]"
    "-fxray-instruction-threshold=[sets the minimum function size to instrument with XRay]:arg"
    "-fxray-instrumentation-bundle=[select which XRay instrumentation points to emit]:arg"
    "-fxray-instrument[generate XRay instrumentation sleds on function entry and exit]"
    "-fxray-link-deps[tells clang to add the link dependencies for XRay]"
    "-fxray-modes=[list of modes to link in by default into XRay instrumented binaries]:arg"
    "-fxray-never-instrument=[file defining the whitelist for Xray attributes]:file:_files"
    "-fxray-selected-function-group=[select which group of functions to instrument]:arg"
    "-fzvector[enable System z vector language extension]"
    {-gcc-toolchain=,--gcc-toolchain=}"[use the gcc toolchain at the given directory]:directory:_files -/"
    "-gcodeview[generate CodeView debug information]"
    {-gcodeview-ghash,-gno-codeview-ghash}"[emit type record hashes is a .debug section]"
    "-gcolumn-info[column info]"
    "-gdwarf-aranges[DWARF aranges]"
    "-gembed-source[embed source text in DWARF debug sections]"
    "-gfull[emit debugging information for all symbols and types]"
    {-G-,-G=-,-msmall-data-limit=,-msmall-data-threshold}"[Put objects of at most size bytes into small data section]:size"
    "-ggnu-pubnames[gnu pubnames]"
    "-ginline-line-tables[inline line tables]"
    "-gline-directives-only[emit debug line info directives only]"
    "-gline-tables-only[line tables only]"
    "-glldb[lldb]"
    "-gmlt[emit debug line number tables only]"
    "-gmodules[generate debug info with external references]"
    "-gno-column-info[no column info]"
    "-gno-embed-source[no embed source]"
    "-gno-gnu-pubnames[no gnu pubnames]"
    "-gno-inline-line-tables[no inline line tables]"
    "-gno-record-command-line[no record command line]"
    "--gpu-instrument-lib=[instrument device library for HIP]:argument"
    "--gpu-max-threads-per-block=[default max threads per block for kernel launch bounds for HIP]"
    "-grecord-command-line[record command line]"
    "-gsce[sce]"
    "-gused[emit debugging information for symbols that are used]"
    "-gz=[DWARF debug sections compression type]:arg"
    "-gz[equivalent to -gz=zlib]"
    "-headerpad_max_install_names[headerpad max install names]:argument"
    "-help[display this information]"
    "--help-hidden[display help for hidden options]"
    "--hip-device-lib=[hIP device library]:arg"
    "--hip-device-lib-path=[hip device lib path]:arg"
    "--hip-link[link clang-offload-bundler bundles for HIP]"
    "--hip-version=[HIP version in the format of major.minor.patch]"
    "-ibuiltininc[enable builtin #include directories even when -nostdinc is used before or after -ibuiltininc]"
    "-iframework[add directory to SYSTEM framework search path]:arg"
    "-iframeworkwithsysroot[add directory to SYSTEM framework search path, absolute paths are relative to -isysroot]:directory:_files -/"
    "-image_base[image base]:argument"
    "-include-pch[include precompiled header file]:file:_files"
    "-index-header-map[make the next included directory (-I or -F) an indexer header map]"
    "-init[init]:arg"
    "-init[init]:argument"
    "-install_name[install name]:arg"
    "-install_name[install name]:argument"
    "-integrated-as[integrated as]"
    "-interface-stub-version=[interface stub version]:arg"
    "-interface-stub-version=[interface stub version]:argument"
    "-isystem-after[add directory to end of the SYSTEM include search path]:directory:_files -/"
    "-ivfsoverlay[overlay the virtual filesystem described by file over the real file system]:arg"
    "-iwithsysroot[add directory to SYSTEM include search path]:directory:_files -/"
    "-J[this option specifies where to put .mod files for compiled modules]:arg"
    "-keep_private_externs[keep private externs]"
    "-keep_private_externs[keep private externs]"
    "-lazy_framework[lazy framework]:arg"
    "-lazy_framework[lazy framework]:argument"
    "-lazy_library[lazy library]:arg"
    "-lazy_library[lazy library]:argument"
    "--ld-path=[ld path]:arg"
    "--libomptarget-amdgcn-bc-path=[path to libomptarget-amdgcn bitcode library]:arg"
    "--libomptarget-nvptx-bc-path=[path to libomptarget-nvptx bitcode library]:arg"
    "--library-directory=[add directory to library search path]:directory:_files -/"
    "-maix-struct-return[return all structs in memory]"
    "-malign-branch-boundary=[specify the boundary's size to align branches]:size"
    "-malign-branch=[specify types of branches to align]:arg"
    "-mappletvos-version-min=[appletvos version min]:arg"
    "-mappletvsimulator-version-min=[appletvsimulator version min]:arg"
    "-mbackchain[link stack frames through backchain on System Z]"
    "-mbig-endian[big endian]"
    "-mbranches-within-32B-boundaries[align selected branches within 32-byte boundary]"
    "-mbranch-protection=[enforce targets of indirect branches and function returns]:arg"
    "-mcode-object-v3[legacy option to specify code object ABI V3]"
    "-mcode-object-version=[specify code object ABI version]:version"
    "-mconsole[console]:arg"
    "-mcrc[allow use of CRC instructions]"
    "-mdefault-build-attributes[default build attributes]:arg"
    "-mdll[dll]:arg"
    "-mdouble=[force double to be 32 bits or 64 bits]:arg"
    "-mdynamic-no-pic[dynamic no pic]:arg"
    "-meabi[set EABI type]:arg"
    "-menable-experimental-extensions[enable use of experimental RISC-V extensions]"
    "-menable-unsafe-fp-math[allow unsafe floating-point math optimizations which may decrease precision]"
    "-mfix-cortex-a53-835769[workaround Cortex-A53 erratum 835769]"
    "-mfloat-abi=[float abi]:arg"
    "-mfpu=[fpu]:arg"
    "-mglobal-merge[enable merging of globals]"
    "-mharden-sls=[select straight-line speculation hardening scope]:arg"
    "--mhwdiv=[hwdiv]:arg"
    "-mhwdiv=[hwdiv]:arg"
    "-mhwmult=[hwmult]:arg"
    "-mignore-xcoff-visibility[do not emit the visibility attribute for asm]"
    "--migrate[run the migrator]"
    "-mimplicit-float[implicit float]"
    "-mimplicit-it=[implicit it]:arg"
    "-mincremental-linker-compatible[emit an object file which can be used with an incremental linker]"
    "-mios-simulator-version-min=[ios simulator version min]:arg"
    "-mios-version-min=[ios version min]:arg"
    "-miphoneos-version-min=[iphoneos version min]:arg"
    "-miphonesimulator-version-min=[iphonesimulator version min]:arg"
    "-mkernel[kernel]"
    "-mlinker-version=[linker version]:arg"
    "-mlittle-endian[little endian]"
    "-mllvm[additional arguments to forward to LLVM's option processing]:arg"
    "-mlong-calls[generate branches with extended addressability]"
    "-mlvi-cfi[enable only control-flow mitigations for Load Value Injection]"
    "-mlvi-hardening[enable all mitigations for Load Value Injection]"
    "-mmacos-version-min=[set Mac OS X deployment target]:arg"
    "-mmacosx-version-min=[macosx version min]:arg"
    "-mmcu=[mcu]:arg"
    "-module-dependency-dir[directory to dump module dependencies to]:arg"
    "-module-dir[odule dir]:dir"
    "-module-file-info[provide information about a particular module file]"
    "-moslib=[oslib]:arg"
    "-moutline-atomics[generate local calls to out-of-line atomic operations]"
    "-mpacked-stack[use packed stack layout]"
    "-mpad-max-prefix-size=[specify maximum number of prefixes to use for padding]:arg"
    "-mpie-copy-relocations[pie copy relocations]"
    "-mprefer-vector-width=[specifies preferred vector width]:arg"
    "-mqdsp6-compat[enable hexagon-qdsp6 backward compatibility]"
    "-mrelax-all[relax all machine instructions]"
    "-mrelax[enable linker relaxation]"
    "-mretpoline[retpoline]"
    "-mseses[enable speculative execution side effect suppression (SESES)]"
    "-msign-return-address=[select return address signing scope]:arg"
    "-msim[sim]"
    "-mspeculative-load-hardening[speculative load hardening]"
    "-mstack-alignment=[set the stack alignment]:arg"
    "-mstack-probe-size=[set the stack probe size]:size"
    "-mstack-protector-guard-offset=[use the given offset for addressing the stack-protector guard]:arg"
    "-mstack-protector-guard-reg=[use the given reg for addressing the stack-protector guard]:reg"
    "-msvr4-struct-return[return small structs in registers]"
    "-mthread-model[the thread model to use]:arg"
    "-mthumb[thumb]"
    "-mtls-size=[specify bit size of immediate TLS offsets]:arg"
    "-mtvos-simulator-version-min=[tvos simulator version min]:arg"
    "-mtvos-version-min=[tvos version min]:arg"
    "-multi_module[multi module]"
    "-multiply_defined[multiply defined]:arg"
    "-multiply_defined_unused[multiply defined unused]:arg"
    "-municode[unicode]:arg"
    "-munsafe-fp-atomics[enable unsafe floating point atomic instructions]"
    "-mv55[equivalent to -mcpu=hexagonv55]"
    "-mv5[equivalent to -mcpu=hexagonv5]"
    "-mv60[equivalent to -mcpu=hexagonv60]"
    "-mv62[equivalent to -mcpu=hexagonv62]"
    "-mv65[equivalent to -mcpu=hexagonv65]"
    "-mv66[equivalent to -mcpu=hexagonv66]"
    "-mv67[equivalent to -mcpu=hexagonv67]"
    "-mv67t[equivalent to -mcpu=hexagonv67t]"
    "-mv68[equivalent to -mcpu=hexagonv68]"
    "-mvx[vx]"
    "-mwarn-nonportable-cfstrings[warn nonportable cfstrings]"
    "-mwatchos-simulator-version-min=[watchos simulator version min]:arg"
    "-mwatchos-version-min=[watchos version min]:arg"
    "-mwatchsimulator-version-min=[watchsimulator version min]:arg"
    "-mwavefrontsize64[specify wavefront size 64 mode]"
    "-mwindows[windows]:arg"
    "-mzvector[zvector]"
    "-nobuiltininc[do not search builtin directory for include files]"
    "-nocpp[no cpp]"
    "-nocudainc[do not add include paths for CUDA/HIP and do not include the default CUDA/HIP wrapper headers]"
    "*--no-cuda-include-ptx=[do not include ptx for the following gpu architecture]:argument"
    "-nocudalib[do not link device library for CUDA/HIP device compilation]"
    "--no-cuda-noopt-device-debug[disable device-side debug info generation]"
    "--no-cuda-version-check[don't error out if the detected version of the CUDA install is too low for the requested CUDA gpu architecture]"
    "-no_dead_strip_inits_and_terms[no dead strip inits and terms]"
    "-nofixprebinding[no fixprebinding]"
    "-nogpuinc[no gpuinc]"
    "-nogpulib[no gpulib]"
    "--no-integrated-cpp[no integrated cpp]"
    "-no-integrated-cpp[no integrated cpp]"
    "-nolibc[no libc]"
    "-nomultidefs[no multidefs]"
    "--no-offload-arch=[no offload arch]:arg"
    "-no-pie[no pie]"
    "-nopie[no pie]"
    "-noprebind[no prebind]"
    "-noprofilelib[no profilelib]"
    "-no-pthread[no pthread]"
    "-noseglinkedit[no seglinkedit]"
    "--no-standard-libraries[no standard libraries]"
    "-nostdinc\+\+[disable standard #include directories for the C++ standard library]"
    "-nostdlibinc[do not search standard system directories for include files]"
    "-nostdlib\+\+[no stdlib++]"
    "--no-system-header-prefix=[no system header prefix]:prefix"
    "--no-undefined[no undefined]"
    "-objcmt-atomic-property[make migration to atomic properties]"
    "-objcmt-migrate-all[enable migration to modern ObjC]"
    "-objcmt-migrate-annotation[enable migration to property and method annotations]"
    "-objcmt-migrate-designated-init[enable migration to infer NS_DESIGNATED_INITIALIZER for initializer methods]"
    "-objcmt-migrate-instancetype[enable migration to infer instancetype for method result type]"
    "-objcmt-migrate-literals[enable migration to modern ObjC literals]"
    "-objcmt-migrate-ns-macros[enable migration to NS_ENUM/NS_OPTIONS macros]"
    "-objcmt-migrate-property-dot-syntax[enable migration of setter/getter messages to property-dot syntax]"
    "-objcmt-migrate-property[enable migration to modern ObjC property]"
    "-objcmt-migrate-protocol-conformance[enable migration to add protocol conformance on classes]"
    "-objcmt-migrate-readonly-property[enable migration to modern ObjC readonly property]"
    "-objcmt-migrate-readwrite-property[enable migration to modern ObjC readwrite property]"
    "-objcmt-migrate-subscripting[enable migration to modern ObjC subscripting]"
    "-objcmt-ns-nonatomic-iosonly[enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's atomic attribute]"
    "-objcmt-returns-innerpointer-property[enable migration to annotate property with NS_RETURNS_INNER_POINTER]"
    "-objcmt-whitelist-dir-path=[objcmt whitelist dir path]:arg"
    "-objcmt-white-list-dir-path=[only modify files with a filename contained in the provided directory path]:arg"
    "-ObjC[treat source files as Objective-C]"
    "-ObjC\+\+[treat source files as Objective-C++]"
    "-object[object]"
    "--offload-arch=[offload arch]:arg"
    "--output-class-directory=[output class directory]:arg"
    "-pagezero_size[pagezero size]:arg"
    "-pg[enable mcount instrumentation]"
    {-p,--profile}"[enable function profiling for prof]"
    "-prebind_all_twolevel_modules[prebind all twolevel modules]"
    "-prebind[prebind]"
    "--precompile[only precompile the input]"
    "-preload[preload]"
    "--print-diagnostic-categories[print diagnostic categories]"
    "-print-effective-triple[print effective triple]"
    "--print-effective-triple[print the effective target triple]"
    "--print-file-name=[print the full library path of <file>]:file:_files"
    "-print-ivar-layout[enable Objective-C Ivar layout bitmap print trace]"
    "--print-libgcc-file-name[print the library path for the currently used compiler runtime library]"
    "--print-multi-directory[print multi directory]"
    "--print-multi-lib[print multi lib]"
    "--print-prog-name=[print the full program path of <name>]:name"
    "-print-resource-dir[print resource dir]"
    "--print-resource-dir[print the resource directory pathname]"
    "--print-search-dirs[print the paths used for finding libraries and programs]"
    "--print-supported-cpus[print supported cpus]"
    "-print-supported-cpus[print supported cpus]"
    "-print-targets[print targets]"
    "--print-targets[print the registered targets]"
    "-print-target-triple[print target triple]"
    "--print-target-triple[print the normalized target triple]"
    "-private_bundle[private bundle]"
    "--profile-blocks[undocumented option]"
    "-pthreads[pthreads]"
    "-pthread[support POSIX threads in generated code]"
    "--ptxas-path=[path to ptxas (used for compiling CUDA code)]:arg"
    "-Qunused-arguments[don't emit warning for unused driver arguments]"
    "-read_only_relocs[read only relocs]:arg"
    "-relocatable-pch[relocatable pch]"
    "--relocatable-pch[whether to build a relocatable precompiled header]"
    "-R[enable the specified remark]:remark"
    "--resource=[resource]:arg"
    "-rewrite-legacy-objc[rewrite Legacy Objective-C source to C++]"
    "-rewrite-objc[rewrite Objective-C source to C++]"
    "--rocm-device-lib-path=[rOCm device library path]:arg"
    "--rocm-path=[rOCm installation path]:arg"
    "-Rpass-analysis=[report transformation analysis from optimization passes]:regex"
    "-Rpass-missed=[report missed transformations by optimization passes]:arg"
    "-Rpass=[report transformations performed by optimization passes]:arg"
    "-rpath[rpath]:arg"
    "-r[product a relocatable object as output]"
    "--rtlib=[compiler runtime library to use]:arg"
    "-rtlib=[rtlib]:arg"
    "--save-stats=[save llvm statistics]:arg"
    "-sectalign[<arg2> <arg3>]:arg1"
    "-sectcreate[<arg2> <arg3>]:arg1"
    "-sectobjectsymbols[<arg2>]:arg1"
    "-sectorder[<arg2> <arg3>]:arg1"
    "-seg1addr[seg1addr]:arg"
    "-segaddr[<arg2>]:arg1"
    "-seg_addr_table_filename[seg addr table filename]:arg"
    "-seg_addr_table[seg addr table]:arg"
    "-segcreate[<arg2> <arg3>]:arg1"
    "-seglinkedit[seglinkedit]"
    "-segprot[<arg2> <arg3>]:arg1"
    "-segs_read_only_addr[segs read only addr]:arg"
    "-segs_read_[segs read]:arg"
    "-segs_read_write_addr[segs read write addr]:arg"
    "--serialize-diagnostics[serialize compiler diagnostics to a file]:arg"
    "-serialize-diagnostics[serialize diagnostics]:arg"
    "-shared-libasan[dynamically link the sanitizer runtime]"
    "-shared-libsan[shared libsan]"
    "--shared[shared]"
    "--signed-char[signed char]"
    "-single_module[single module]"
    "--specs=[specs]:arg"
    "-static-libgfortran[static libgfortran]"
    "-static-libsan[statically link the sanitizer runtime]"
    "-static-libstdc\+\+[static libstdc++]"
    "-static-openmp[use the static host OpenMP runtime while linking.]"
    "-static-pie[static pie]"
    "--static[static]"
    "-std-default=[std default]:arg"
    "--stdlib=[c++ standard library to use]:arg"
    "-stdlib\+\+-isystem[use directory as the C++ standard library include path]:directory:_files -/"
    "-stdlib=[stdlib]:arg"
    "-sub_library[sub library]:arg"
    "-sub_umbrella[sub umbrella]:arg"
    "-sycl-std=[SYCL language standard to compile for]:standard"
    "--system-header-prefix=[treat all #include paths starting with <prefix> as including a system header]:prefix"
    "-target[generate code for the given target]:arg"
    "--target=[target]:arg"
    "-Tbss[set starting address of BSS to <addr>]:addr"
    "-Tdata[set starting address of DATA to <addr>]:addr"
    "--traditional[traditional]"
    "-traditional[traditional]"
    "-Ttext[set starting address of TEXT to <addr>]:addr"
    "-t[undocumented option]"
    "-twolevel_namespace_hints[twolevel namespace hints]"
    "-twolevel_namespace[twolevel namespace]"
    "-umbrella[umbrella]:arg"
    "-undefined[undefined]:arg"
    "-unexported_symbols_list[unexported symbols list]:arg"
    "--unsigned-char[unsigned char]"
    "--unwindlib=[unwind library to use]:arg"
    "-unwindlib=[unwindlib]:arg"
    "--verify-debug-info[verify the binary representation of debug output]"
    "-verify-pch[load and verify that a pre-compiled header file is not stale]"
    "--warn-=-[enable the specified warning]:warning:->warning"
    "-weak_framework[weak framework]:arg"
    "-weak_library[weak library]:arg"
    "-weak-l[weak l]:arg"
    "-weak_reference_mismatches[weak reference mismatches]:arg"
    "-whatsloaded[whatsloaded]"
    "-whyload[whyload]"
    "-working-directory=[resolve file paths relative to the specified directory]:arg"
    "-Xanalyzer[pass <arg> to the static analyzer]:arg"
    "-Xarch_device[pass arg to CUDA/HIP device compilation]:argument"
    "-Xarch_host[pass arg to CUDA/HIP host compilation]:argument"
    "-Xclang[pass <arg> to the clang compiler]:arg"
    "-Xcuda-fatbinary[pass arg to fatbinary invocation]:argument"
    "-Xcuda-ptxas[pass arg to the ptxas assemler]:argument"
    "-Xflang[pass <arg> to the flang compiler]:arg"
    "-Xopenmp-target[pass arg to the the target offloading toolchain]:argument"
    "-y[the action to perform on the input]:arg"
    "-Z-[undocumented option]:argument"
  )
else
  args+=(
    "--dump=[dump information]:argument"
    '-flto=-[enable link-time optimization]::jobs:'
    '*--help=-[display this information]:class:->help'
  )
fi

local -a sanitizers
sanitizers=(
  address alignment bool bounds enum float-cast-overflow float-divide-by-zero
  integer-divide-by-zero memory nonnull-attribute null nullability-arg
  nullability-assign nullability-return object-size pointer-overflow return
  unsigned-integer-overflow returns-nonnull-attribute shift signed-integer-overflow
  unreachable vla-bound vptr
)

local -a languages
languages=(
  c c-header cpp-output c++ c++-header c++-cpp-output objective-c objective-c-header
  objective-c-cpp-output objective-c++ objective-c++-header objective-c++-cpp-output
  assembler assembler-with-cpp ada f77 f77-cpp-input f95 f95-cpp-input go java
  brig none
)

# warnings (from --help=warnings), note some -W options are listed by --help=common instead
warnings+=(
  '-Wabi-tag[warn if a subobject has an abi_tag attribute that the complete object type does not have]'
  '-Wabi[warn about things that will change when compiling with an ABI-compliant compiler]::'
  '-Waddress[warn about suspicious uses of memory addresses]'
  '-Waggregate-return[warn about returning structures, unions or arrays]'
  '-Waggressive-loop-optimizations[warn if a loop with constant number of iterations triggers undefined behavior]'
  '-Waliasing[warn about possible aliasing of dummy arguments]'
  '-Walign-commons[warn about alignment of COMMON blocks]'
  '-Waligned-new=[warn even if '\'new\'' uses a class member allocation function]:none|global|all: '
  '-Wall[enable most warning messages]'
  '-Walloca-larger-than=[warn on unbounded uses of alloca, and on bounded uses of alloca whose bound can be larger than <number> bytes]:bytes: '
  '-Walloca[warn on any use of alloca]'
  '-Walloc-size-larger-than=[warn for calls to allocation functions that attempt to allocate objects larger than the specified number of bytes]:bytes: '
  '-Walloc-zero[warn for calls to allocation functions that specify zero bytes]'
  '-Wampersand[warn about missing ampersand in continued character constants]'
  '-Wargument-mismatch[warn about type and rank mismatches between arguments and parameters]'
  '-Warray-bounds[warn if an array is accessed out of bounds]'
  '-Warray-bounds=[warn if an array is accessed out of bounds]:level:(1 2)'
  '-Warray-temporaries[warn about creation of array temporaries]'
  '-Wassign-intercept[warn whenever an Objective-C assignment is being intercepted by the garbage collector]'
  '-Wattributes[warn about inappropriate attribute usage]'
  '-Wbad-function-cast[warn about casting functions to incompatible types]'
  '-Wbool-compare[warn about boolean expression compared with an integer value different from true/false]'
  '-Wbool-operation[warn about certain operations on boolean expressions]'
  '-Wbuiltin-declaration-mismatch[warn when a built-in function is declared with the wrong signature]'
  '-Wbuiltin-macro-redefined[warn when a built-in preprocessor macro is undefined or redefined]'
  '-Wc++0x-compat[deprecated in favor of -Wc++11-compat]'
  '-Wc++11-compat[warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011]'
  '-Wc++14-compat[warn about C++ constructs whose meaning differs between ISO C++ 2011 and ISO C++ 2014]'
  '-Wc++1z-compat[warn about C++ constructs whose meaning differs between ISO C++ 2014 and (forthcoming) ISO C++ 201z(7?)]'
  '-Wc90-c99-compat[warn about features not present in ISO C90, but present in ISO C99]'
  '-Wc99-c11-compat[warn about features not present in ISO C99, but present in ISO C11]'
  '-Wcast-align[warn about pointer casts which increase alignment]'
  '-Wcast-qual[warn about casts which discard qualifiers]'
  '-Wc-binding-type[warn if the type of a variable might be not interoperable with C]'
  '-Wc++-compat[warn about C constructs that are not in the common subset of C and C++]'
  '-Wcharacter-truncation[warn about truncated character expressions]'
  '-Wchar-subscripts[warn about subscripts whose type is "char"]'
  '-Wchkp[warn about memory access errors found by Pointer Bounds Checker]'
  '-Wclobbered[warn about variables that might be changed by "longjmp" or "vfork"]'
  '-Wcomments[synonym for -Wcomment]'
  '-Wcomment[warn about possibly nested block comments, and C++ comments spanning more than one physical line]'
  '-Wcompare-reals[warn about equality comparisons involving REAL or COMPLEX expressions]'
  '-Wconditionally-supported[warn for conditionally-supported constructs]'
  '-Wconversion-extra[warn about most implicit conversions]'
  '-Wconversion-null[warn for converting NULL from/to a non-pointer type]'
  '-Wconversion[warn for implicit type conversions that may change a value]'
  '-Wcoverage-mismatch[warn in case profiles in -fprofile-use do not match]'
  '-Wcpp[warn when a #warning directive is encountered]'
  '-Wctor-dtor-privacy[warn when all constructors and destructors are private]'
  '-Wdangling-else[warn about dangling else]'
  '-Wdate-time[warn about __TIME__, __DATE__ and __TIMESTAMP__ usage]'
  '-Wdeclaration-after-statement[warn when a declaration is found after a statement]'
  '-Wdelete-incomplete[warn when deleting a pointer to incomplete type]'
  '-Wdelete-non-virtual-dtor[warn about deleting polymorphic objects with non- virtual destructors]'
  '-Wdeprecated-declarations[warn about uses of __attribute__((deprecated)) declarations]'
  '-Wdeprecated[warn if a deprecated compiler feature, class, method, or field is used]'
  '-Wdesignated-init[warn about positional initialization of structs requiring designated initializers]'
  '-Wdisabled-optimization[warn when an optimization pass is disabled]'
  '-Wdiscarded-array-qualifiers[warn if qualifiers on arrays which are pointer targets are discarded]'
  '-Wdiscarded-qualifiers[warn if type qualifiers on pointers are discarded]'
  '-Wdiv-by-zero[warn about compile-time integer division by zero]'
  '-Wdouble-promotion[warn about implicit conversions from "float" to "double"]'
  '-Wduplicated-branches[warn about duplicated branches in if-else statements]'
  '-Wduplicated-cond[warn about duplicated conditions in an if-else-if chain]'
  '-Wduplicate-decl-specifier[warn when a declaration has duplicate const, volatile, restrict or _Atomic specifier]'
  '-Weffc\+\+[warn about violations of Effective C++ style rules]'
  '-Wempty-body[warn about an empty body in an if or else statement]'
  '-Wendif-labels[warn about stray tokens after #else and #endif]'
  '-Wenum-compare[warn about comparison of different enum types]'
  # '-Werror-implicit-function-declaration[this switch is deprecated; use -Werror=implicit-fun]' # this still exists but makes completing -Werror= less convenient
  '-Wexpansion-to-defined[warn if "defined" is used outside #if]'
  '-Wextra[print extra (possibly unwanted) warnings]'
  '-Wfloat-conversion[warn for implicit type conversions that cause loss of floating point precision]'
  '-Wfloat-equal[warn if testing floating point numbers for equality]'
  '-Wformat-contains-nul[warn about format strings that contain NUL bytes]'
  '-Wformat-extra-args[warn if passing too many arguments to a function for its format string]'
  '-Wformat-nonliteral[warn about format strings that are not literals]'
  '-Wformat-overflow[warn about function calls with format strings that write past the end of the destination region]'
  '-Wformat-overflow=[warn about function calls with format strings that write past the end of the destination region]:level:(1 2)'
  '-Wformat-security[warn about possible security problems with format functions]'
  '-Wformat-signedness[warn about sign differences with format functions]'
  '-Wformat-truncation[warn about calls to snprintf and similar functions that truncate output. Same as -Wformat- truncation=1.  Same as -Wformat-truncation=]'
  '-Wformat-truncation=[warn about calls to snprintf and similar functions that truncate output]:level:(1 2)'
  '-Wformat=[warn about printf/scanf/strftime/strfmon format string anomalies]::level:(1 2)'
  '-Wformat-y2k[warn about strftime formats yielding 2-digit years]'
  '-Wformat-zero-length[warn about zero-length formats]'
  '-Wframe-address[warn when __builtin_frame_address or __builtin_return_address is used unsafely]'
  '-Wframe-larger-than=[warn if a function'\''s stack frame requires more than <number> bytes]:bytes: '
  '-Wfree-nonheap-object[warn when attempting to free a non-heap object]'
  '-Wfunction-elimination[warn about function call elimination]'
  '-Whsa[warn when a function cannot be expanded to HSAIL]'
  '-Wignored-attributes[warn whenever attributes are ignored]'
  '-Wignored-qualifiers[warn whenever type qualifiers are ignored]'
  '-Wimplicit-fallthrough=[warn when a switch case falls through]:level:(1 2 3 4 5)'
  '-Wimplicit-function-declaration[warn about implicit function declarations]'
  '-Wimplicit-interface[warn about calls with implicit interface]'
  '-Wimplicit-int[warn when a declaration does not specify a type]'
  '-Wimplicit-procedure[warn about called procedures not explicitly declared]'
  '-Wimplicit[warn about implicit declarations]'
  '-Wimport[warn about imports]'
  '-Wincompatible-pointer-types[warn when there is a conversion between pointers that have incompatible types]'
  '-Winherited-variadic-ctor[warn about C++11 inheriting constructors when the base has a variadic constructor]'
  '-Winit-self[warn about variables which are initialized to themselves]'
  '-Winline[warn when an inlined function cannot be inlined]'
  '-Wint-conversion[warn about incompatible integer to pointer and pointer to integer conversions]'
  '-Winteger-division[warn about constant integer divisions with truncated results]'
  '-Wint-in-bool-context[warn for suspicious integer expressions in boolean context]'
  '-Wintrinsic-shadow[warn if a user-procedure has the same name as an intrinsic]'
  '-Wintrinsics-std[warn on intrinsics not part of the selected standard]'
  '-Wint-to-pointer-cast[warn when there is a cast to a pointer from an integer of a different size]'
  '-Winvalid-memory-model[warn when an atomic memory model parameter is known to be outside the valid range]'
  '-Winvalid-offsetof[warn about invalid uses of the "offsetof" macro]'
  '-Winvalid-pch[warn about PCH files that are found but not used]'
  '-Wjump-misses-init[warn when a jump misses a variable initialization]'
  '-Wlarger-than=[warn if an object is larger than <number> bytes]:bytes: '
  '-Wline-truncation[warn about truncated source lines]'
  '-Wliteral-suffix[warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore]'
  '-Wlogical-not-parentheses[warn when logical not is used on the left hand side operand of a comparison]'
  '-Wlogical-op[warn when a logical operator is suspiciously always evaluating to true or false]'
  '-Wlong-long[do not warn about using "long long" when -pedantic]'
  '-Wlto-type-mismatch[during link time optimization warn about mismatched types of global declarations]'
  '-Wmain[warn about suspicious declarations of "main"]'
  '-Wmaybe-uninitialized[warn about maybe uninitialized automatic variables]'
  '-Wmemset-elt-size[warn about suspicious calls to memset where the third argument contains the number of elements not multiplied by the element size]'
  '-Wmemset-transposed-args[warn about suspicious calls to memset where the third argument is constant literal zero and the second is not]'
  '-Wmisleading-indentation[warn when the indentation of the code does not reflect the block structure]'
  '-Wmissing-braces[warn about possibly missing braces around initializers]'
  '-Wmissing-declarations[warn about global functions without previous declarations]'
  '-Wmissing-field-initializers[warn about missing fields in struct initializers]'
  '-Wmissing-include-dirs[warn about user-specified include directories that do not exist]'
  '-Wmissing-parameter-type[warn about function parameters declared without a type specifier in K&R-style functions]'
  '-Wmissing-prototypes[warn about global functions without prototypes]'
  '-Wmudflap[warn about constructs not instrumented by -fmudflap]'
  '-Wmultichar[warn about use of multi-character character constants]'
  '-Wmultiple-inheritance[warn on direct multiple inheritance]'
  '-Wnamespaces[warn on namespace definition]'
  '-Wnarrowing[warn about narrowing conversions within { } that are ill-formed in C++11]'
  '-Wnested-externs[warn about "extern" declarations not at file scope]'
  '-Wnoexcept-type[warn if C++1z noexcept function type will change the mangled name of a symbol]'
  '-Wnoexcept[warn when a noexcept expression evaluates to false even though the expression can''t actually throw]'
  '-Wnonnull-compare[warn if comparing pointer parameter with nonnull attribute with NULL]'
  '-Wnonnull[warn about NULL being passed to argument slots marked as requiring non-NULL]'
  '-Wnonportable-cfstrings[warn on CFStrings containing nonportable characters]'
  '-Wnon-template-friend[warn when non-templatized friend functions are declared within a template]'
  '-Wnon-virtual-dtor[warn about non-virtual destructors]'
  '-Wnormalized=-[warn about non-normalised Unicode strings]:normalization:((id\:allow\ some\ non-nfc\ characters\ that\ are\ valid\ identifiers nfc\:only\ allow\ NFC nfkc\:only\ allow\ NFKC none\:allow\ any\ normalization)): '
  '-Wnull-dereference[warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior]'
  '-Wodr[warn about some C++ One Definition Rule violations during link time optimization]'
  '-Wold-style-cast[warn if a C-style cast is used in a program]'
  '-Wold-style-declaration[warn for obsolescent usage in a declaration]'
  '-Wold-style-definition[warn if an old-style parameter definition is used]'
  '-Wopenmp-simd[warn if a simd directive is overridden by the vectorizer cost model]'
  '-Woverflow[warn about overflow in arithmetic expressions]'
  '-Woverlength-strings[warn if a string is longer than the maximum portable length specified by the standard]'
  '-Woverloaded-virtual[warn about overloaded virtual function names]'
  '-Woverride-init-side-effects[warn about overriding initializers with side effects]'
  '-Woverride-init[warn about overriding initializers without side effects]'
  '-Wpacked-bitfield-compat[warn about packed bit-fields whose offset changed in GCC 4.4]'
  '-Wpacked[warn when the packed attribute has no effect on struct layout]'
  '-Wpadded[warn when padding is required to align structure members]'
  '-Wparentheses[warn about possibly missing parentheses]'
  '-Wpedantic[issue warnings needed for strict compliance to the standard]'
  '-Wplacement-new=[warn for placement new expressions with undefined behavior]::level:(1 2)'
  '-Wpmf-conversions[warn when converting the type of pointers to member functions]'
  '-Wpointer-arith[warn about function pointer arithmetic]'
  '-Wpointer-compare[warn when a pointer is compared with a zero character constant]'
  '-Wpointer-sign[warn when a pointer differs in signedness in an assignment]'
  '-Wpointer-to-int-cast[warn when a pointer is cast to an integer of a different size]'
  '-Wpoison-system-directories[warn for -I and -L options using system directories if cross compiling]'
  '-Wpragmas[warn about misuses of pragmas]'
  '-Wproperty-assign-default[warn if a property for an Objective-C object has no assign semantics specified]'
  '-Wprotocol[warn if inherited methods are unimplemented]'
  '-Wpsabi[warn about psabi]'
  '-Wrealloc-lhs-all[warn when a left-hand-side variable is reallocated]'
  '-Wrealloc-lhs[warn when a left-hand-side array variable is reallocated]'
  '-Wreal-q-constant[warn about real-literal-constants with '\'q\'' exponent-letter]'
  '-Wredundant-decls[warn about multiple declarations of the same object]'
  '-Wregister[warn about uses of register storage specifier]'
  '-Wreorder[warn when the compiler reorders code]'
  '-Wrestrict[warn when an argument passed to a restrict- qualified parameter aliases with another argument]'
  '-Wreturn-local-addr[warn about returning a pointer/reference to a local or temporary variable]'
  '-Wreturn-type[warn whenever a function'\''s return type defaults to "int" (C), or about inconsistent return types (C++)]'
  '-Wscalar-storage-order[warn on suspicious constructs involving reverse scalar storage order]'
  '-Wselector[warn if a selector has multiple methods]'
  '-Wsequence-point[warn about possible violations of sequence point rules]'
  '-Wshadow-ivar[warn if a local declaration hides an instance variable]'
  '-Wshadow[warn when one variable shadows another.  Same as  -Wshadow=global]'
  '-Wshift-count-negative[warn if shift count is negative]'
  '-Wshift-count-overflow[warn if shift count >= width of type]'
  '-Wshift-negative-value[warn if left shifting a negative value]'
  '-Wshift-overflow[warn if left shift of a signed value overflows.  Same as -Wshift-overflow=]'
  '-Wshift-overflow=[warn if left shift of a signed value overflows]:level:(1 2)'
  '-Wsign-compare[warn about signed-unsigned comparisons]'
  '-Wsign-conversion[warn for implicit type conversions between signed and unsigned integers]'
  '-Wsign-promo[warn when overload promotes from unsigned to signed]'
  '-Wsized-deallocation[warn about missing sized deallocation functions]'
  '-Wsizeof-array-argument[warn when sizeof is applied on a parameter declared as an array]'
  '-Wsizeof-pointer-memaccess[warn about suspicious length parameters to certain string functions if the argument uses sizeof]'
  '-Wstack-protector[warn when not issuing stack smashing protection for some reason]'
  '-Wstack-usage=[warn if stack usage might be larger than specified amount]:bytes: '
  '-Wstrict-aliasing[warn about code which might break strict aliasing rules]'
  '-Wstrict-aliasing=-[warn about code which might break strict aliasing rules]:level of checking (higher is more accurate):(1 2 3)'
  '-Wstrict-null-sentinel[warn about uncasted NULL used as sentinel]'
  '-Wstrict-overflow[warn about optimizations that assume that signed overflow is undefined]'
  '-Wstrict-overflow=-[warn about optimizations that assume that signed overflow is undefined]:level of checking (higher finds more cases):(1 2 3 4 5)'
  '-Wstrict-prototypes[warn about unprototyped function declarations]'
  '-Wstrict-selector-match[warn if type signatures of candidate methods do not match exactly]'
  '-Wstringop-overflow=[under the control of Object Size type, warn about buffer overflow in string manipulation functions like memcpy and strcpy]:level:(1 2 3 4)'
  '-Wstringop-overflow[warn about buffer overflow in string manipulation functions like memcpy and strcpy.  Same as  -Wstringop-overflow=]'
  '-Wsubobject-linkage[warn if a class type has a base or a field whose type uses the anonymous namespace or depends on a type with no linkage]'
  '*-Wsuggest-attribute=-[warn about functions that might be candidates for attributes]:attribute:(pure const noreturn format)'
  '-Wsuggest-final-methods[warn about C++ virtual methods where adding final keyword would improve code quality]'
  '-Wsuggest-final-types[warn about C++ polymorphic types where adding final keyword would improve code quality]'
  '-Wsuggest-override[suggest that the override keyword be used when the declaration of a virtual function overrides another]'
  '-Wsurprising[warn about "suspicious" constructs]'
  '-Wswitch-bool[warn about switches with boolean controlling expression]'
  '-Wswitch-default[warn about enumerated switches missing a "default-" statement]'
  '-Wswitch-enum[warn about all enumerated switches missing a specific case]'
  '-Wswitch-unreachable[warn about statements between switch'\''s controlling expression and the first case]'
  '-Wswitch[warn about enumerated switches, with no default, missing a case]'
  '-Wsync-nand[warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used]'
  '-Wsynth[deprecated. This switch has no effect]'
  '-Wsystem-headers[do not suppress warnings from system headers]'
  '-Wtabs[permit nonconforming uses of the tab character]'
  '-Wtarget-lifetime[warn if the pointer in a pointer assignment might outlive its target]'
  '-Wtautological-compare[warn if a comparison always evaluates to true or false]'
  '-Wtemplates[warn on primary template declaration]'
  '-Wterminate[warn if a throw expression will always result in a call to terminate()]'
  '-W[this switch is deprecated; use -Wextra instead]'
  '-Wtraditional-conversion[warn of prototypes causing type conversions different from what would happen in the absence of prototype]'
  '-Wtraditional[warn about features not present in traditional C]'
  '-Wtrampolines[warn whenever a trampoline is generated]'
  '-Wtrigraphs[warn if trigraphs are encountered that might affect the meaning of the program]'
  '-Wtype-limits[warn if a comparison is always true or always false due to the limited range of the data type]'
  '-Wundeclared-selector[warn about @selector()s without previously declared methods]'
  '-Wundefined-do-loop[warn about an invalid DO loop]'
  '-Wundef[warn if an undefined macro is used in an #if directive]'
  '-Wunderflow[warn about underflow of numerical constant expressions]'
  '-Wuninitialized[warn about uninitialized automatic variables]'
  '-Wunknown-pragmas[warn about unrecognized pragmas]'
  '-Wunsafe-loop-optimizations[warn if the loop cannot be optimized due to nontrivial assumptions]'
  '-Wunsuffixed-float-constants[warn about unsuffixed float constants]'
  '-Wunused-but-set-parameter[warn when a function parameter is only set, otherwise unused]'
  '-Wunused-but-set-variable[warn when a variable is only set, otherwise unused]'
  '-Wunused-const-variable[warn when a const variable is unused.  Same as  -Wunused-const-variable=]'
  '-Wunused-const-variable=[warn when a const variable is unused]:level:(1 2)'
  '-Wunused-dummy-argument[warn about unused dummy arguments]'
  '-Wunused[enable all -Wunused- warnings]'
  '-Wunused-function[warn when a function is unused]'
  '-Wunused-label[warn when a label is unused]'
  '-Wunused-local-typedefs[warn when typedefs locally defined in a function are not used]'
  '-Wunused-macros[warn about macros defined in the main file that are not used]'
  '-Wunused-parameter[warn when a function parameter is unused]'
  '-Wunused-result[warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value]'
  '-Wunused-value[warn when an expression value is unused]'
  '-Wunused-variable[warn when a variable is unused]'
  '-Wuseless-cast[warn about useless casts]'
  '-Wuse-without-only[warn about USE statements that have no ONLY qualifier]'
  '-Wvarargs[warn about questionable usage of the macros used to retrieve variable arguments]'
  '-Wvariadic-macros[warn about using variadic macros]'
  '-Wvector-operation-performance[warn when a vector operation is compiled outside the SIMD]'
  '-Wvirtual-inheritance[warn on direct virtual inheritance]'
  '-Wvirtual-move-assign[warn if a virtual base has a non-trivial move assignment operator]'
  '-Wvla-larger-than=[warn on unbounded uses of variable-length arrays, and on bounded uses of variable-length arrays whose bound can be larger than <number> bytes]:bytes: ' 
  '-Wvla[warn if a variable length array is used]'
  '-Wvolatile-register-var[warn when a register variable is declared volatile]'
  '-Wwrite-strings[in C++, nonzero means warn about deprecated conversion from string literals to '\''char *'\''.  In C, similar warning, except that the conversion is]'
  '-Wzero-as-null-pointer-constant[warn when a literal '\''0'\'' is used as null pointer]'
  '-Wzerotrip[warn about zero-trip DO loops]'
)

# clang specific warnings
if [[ "$service" = clang* ]]; then
  warnings+=(
    '-Wlarge-by-value-copy=[warn on large by value copy]:argument'
    '-Wunreachable-code-aggressive[controls -Wunreachable-code, -Wunreachable-code-break, -Wunreachable-code-return]'
    '-Wunreachable-code-break[warn when break will never be executed]'
    '-Wunreachable-code-loop-increment[warn when loop will be executed only once]'
    '-Wunreachable-code-return[warn when return will not be executed]'
    '-Wunreachable-code[warn on code that will not be executed]'
  )
else
  warnings+=(
    '-Wunreachable-code[does nothing. Preserved for backward compatibility]'
  )
fi

args+=(
  {'*-A-','*--assert='}'[make an assertion]:define assertion:'
  "--all-warnings[display all warnings]"
  {-ansi,--ansi}"[same as -std=c89 or -std=c++98]"
  '-aux-info[emit declaration information into <file>]:file:_files'
  {'-B-','--prefix='}'[add <prefix> to the compiler'\''s search paths]:executable prefix:_files -/'
  '-b[specify target machine to compile to]:target machine:'
  {-CC,--comments-in-macros}'[do not discard comments, including macro expansion]'
  {-C,--comments}'[do not discard comments during preprocess]'
  {-c,--compile}'[compile and assemble, but do not link]'
  {'*-D-','*--define-macro='}'[define a macro]:define macro:'
  '-d-[dump the state of the preprocessor]:dump:->dump'
  '--dependencies[generate Makefile dependencies]'
  '-dumpbase[set the file basename to be used for dumps]:file:_files'
  '-dumpdir[set the directory name to be used for dumps]:file:_files -/'
  '-dumpmachine[display the compiler'\''s target processor]'
  '-dumpspecs[display all of the built in spec strings]'
  '-dumpversion[display the version of the compiler]'
  '+e-[control how virtual function definitions are used]:virtual function definitions in classes:((0\:only\ interface 1\:generate\ code))'
  {-e,--entry}"[specify program entry point is entry]:entry"
  {-E,--preprocess}'[preprocess only; do not compile, assemble or link]'
  '-fabi-version=-[use version <n> of the C++ ABI (default: 2)]:ABI version:(1 2 3 4 5 6)'
  "-fada-spec-parent=[dump Ada specs as child units of given parent]"
  '-faggressive-loop-optimizations[aggressively optimize loops using language constraints]'
  '-falign-functions[align the start of functions]'
  '-falign-jumps[align labels which are only reached by jumping]'
  '-falign-labels[align all labels]'
  '-falign-loops[align the start of loops]'
  "-fallow-parameterless-variadic-functions[allow variadic functions without named parameter]"
  "-fasm[recognize the asm keyword]"
  '-fassociative-math[allow optimization for floating-point arithmetic which may change the result of the operation due to rounding]'
  '-fasynchronous-unwind-tables[generate unwind tables that are exact at each instruction boundary]'
  '-fauto-inc-dec[generate auto-inc/dec instructions]'
  '-fbounds-check[generate code to check bounds before indexing arrays]'
  '-fbranch-count-reg[replace add, compare, branch with branch on count register]'
  '-fbranch-probabilities[use profiling information for branch probabilities]'
  '-fbranch-target-load-optimize2[perform branch target load optimization after prologue / epilogue threading]'
  '-fbranch-target-load-optimize[perform branch target load optimization before prologue / epilogue threading]'
  '-fbtr-bb-exclusive[restrict target load migration not to re-use registers in any basic block]'
  "-fbuilding-libgcc[specify building libgcc]"
  "-fbuiltin[recognize builtin functions]"
  '-fcaller-saves[save registers around function calls]'
  '-fcall-saved--[mark <register> as being preserved across functions]:register'
  '-fcall-used--[mark <register> as being corrupted by function calls]:register'
  "-fcanonical-system-headers[where shorter use canonicalized paths to system headers]"
  '-fcheck-data-deps[compare the results of several data dependence analyzers]'
  "-fcheck-pointer-bounds[add pointer bounds checker instrumentation]"
  "-fchkp-check-incomplete-type[generate pointer bounds check for variables with incomplete type]"
  "-fchkp-check-read[generate checks for all read accesses to memory]"
  "-fchkp-check-write[generate checks for all write accesses to memory]"
  "-fchkp-first-field-has-own-bounds[forces checker to use narrowed bounds for address of the first field]"
  "-fchkp-instrument-calls[generate bounds passing for calls]"
  "-fchkp-instrument-marked-only[instrument only functions marked with bnd_instrument attribute]"
  "-fchkp-narrow-bounds[control how checker handle pointers to object fields]"
  "-fchkp-narrow-to-innermost-array[forces checker to use bounds of the innermost arrays in case of nested static array access]"
  "-fchkp-optimize[allow checker optimizations]"
  "-fchkp-store-bounds[generate bounds stores for pointer writes]"
  "-fchkp-treat-zero-dynamic-size-as-infinite[with this option zero size obtained dynamically for objects with incomplete type will be treated as infinite]"
  "-fchkp-use-fast-string-functions[allow to use *_nobnd versions of string functions]"
  "-fchkp-use-nochk-string-functions[allow to use *_nochk versions of string functions]"
  "-fchkp-use-static-bounds[use statically initialized variable for vars bounds instead of generating them each time it is required]"
  "-fchkp-use-static-const-bounds[use statically initialized variable for constant bounds]"
  "-fchkp-use-wrappers[transform instrumented builtin calls into calls to wrappers]"
  "-fchkp-zero-input-bounds-for-main[use zero bounds for all incoming arguments in main function]"
  "-fcilkplus[enable Cilk Plus]"
  '-fcode-hoisting[enable code hoisting]'
  '-fcombine-stack-adjustments[looks for opportunities to reduce stack adjustments and stack references]'
  '-fcommon[do not put uninitialized globals in the common section]'
  '-fcompare-debug=-[compile with and without e.g. -gtoggle, and compare the final-insns dump]:opts:' #TODO: complete gcc options here
  '-fcompare-debug-second[run only the second compilation of -fcompare-debug]'
  '-fcompare-elim[perform comparison elimination after register allocation has finished]'
  "-fcond-mismatch[allow the arguments of the ? operator to have different types]"
  '-fconserve-stack[do not perform optimizations increasing noticeably stack usage]'
  '-fcprop-registers[perform a register copy-propagation optimization pass]'
  '-fcrossjumping[perform cross-jumping optimization]'
  '-fcse-follow-jumps[when running CSE, follow jumps to their targets]'
  '-fcx-fortran-rules[complex multiplication and division follow Fortran rules]'
  '-fcx-limited-range[omit range reduction step when performing complex division]'
  '-fdata-sections[place data items into their own section]'
  '-fdbg-cnt=-[,<counter>-<limit>,...) Set the debug counter limit]:counter\:limit,...: ' #TODO: gcc -fdbg-cnt-list -x c /dev/null -o /dev/null -c
  '-fdbg-cnt-list[list all available debugging counters with their limits and counts]'
  '-fdce[use the RTL dead code elimination pass]'
  "-fdebug-cpp[emit debug annotations during preprocessing]"
  '-fdebug-prefix-map=-[map one directory name to another in debug information]:/old/dir=/new/dir:->dirtodir'
  '-fdebug-types-section[output .debug_types section when using DWARF v4 debuginfo]'
  '-fdefer-pop[defer popping functions args from stack until later]'
  '-fdelayed-branch[attempt to fill delay slots of branch instructions]'
  '-fdelete-dead-exceptions[delete dead instructions that may throw exceptions]'
  '-fdelete-null-pointer-checks[delete useless null pointer checks]'
  '-fdevirtualize-speculatively[perform speculative devirtualization]'
  '-fdevirtualize[try to convert virtual calls to direct ones]'
  '-fdiagnostics-color=-[colorize diagnostics]::color:(never always auto)'
  '-fdiagnostics-generate-patch[print fix-it hints to stderr in unified diff format]'
  '-fdiagnostics-parseable-fixits[print fixit hints in machine-readable form]'
  '-fdiagnostics-show-caret[show the source line with a caret indicating the column]'
  '-fdiagnostics-show-location=-[how often to emit source location at the beginning of line-wrapped diagnostics]:source location:(once every-line)'
  '-fdiagnostics-show-option[amend appropriate diagnostic messages with the command line option that controls them]'
  "-fdirectives-only[preprocess directives only]"
  "-fdollars-in-identifiers[permit $ as an identifier character]"
  '-fdse[use the RTL dead store elimination pass]'
  "-fdump-ada-spec-slim[write all declarations as Ada code for the given file only]"
  "-fdump-ada-spec[write all declarations as Ada code transitively]"
  '-fdump-final-insns=-[dump to filename the insns at the end of translation]:filename:_files'
  '-fdump-go-spec=-[write all declarations to file as Go code]:filename:_files'
  '-fdump-noaddr[suppress output of addresses in debugging dumps]'
  '-fdump-passes[dump optimization passes]'
  '-fdump-unnumbered-links[suppress output of previous and next insn numbers in debugging dumps]'
  '-fdump-unnumbered[suppress output of instruction numbers, line number notes and addresses in debugging dumps]'
  '-fdwarf2-cfi-asm[enable CFI tables via GAS assembler directives]'
  '-fearly-inlining[perform early inlining]'
  '-feliminate-dwarf2-dups[perform DWARF2 duplicate elimination]'
  '-feliminate-unused-debug-symbols[perform unused type elimination in debug info]'
  '-feliminate-unused-debug-types[perform unused type elimination in debug info]'
  '-femit-class-debug-always[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]:spec list"
  "-femit-struct-debug-reduced[conservative reduced debug info for structs]"
  '-fexceptions[enable exception handling]'
  '-fexcess-precision=-[specify handling of excess floating-point precision]:precision handling:(fast standard)'
  "-fexec-charset=[convert all strings and character constants to character set]:character set"
  '-fexpensive-optimizations[perform a number of minor, expensive optimizations]'
  "-fextended-identifiers[permit universal character names in identifiers]"
  '-ffast-math[sets -fno-math-errno, -funsafe-math-optimizations, -ffinite-math-only, -fno-rounding-math, -fno-signaling-nans and -fcx-limited-range]'
  '-ffat-lto-objects[output lto objects containing both the intermediate language and binary output]'
  '-ffinite-math-only[assume no NaNs or infinities are generated]'
  '-ffixed--[mark <register> as being unavailable to the compiler]:register'
  '-ffloat-store[don'\''t allocate floats and doubles in extended- precision registers]'
  '-fforward-propagate[perform a forward propagation pass on RTL]'
  '-ffp-contract=-[perform floating- point expression contraction (default: fast)]:style:(on off fast)'
  '-ffp-contract=[perform floating-point expression contraction]:style:(off on fast)'
  '-ffp-int-builtin-inexact[allow built-in functions ceil, floor, round, trunc to raise "inexact" exceptions]'
  "-ffreestanding[do not assume that standard C libraries and main exist]"
  '-ffunction-cse[allow function addresses to be held in registers]'
  '-ffunction-sections[place each function into its own section]'
  '-fgcse-after-reload[perform global common subexpression elimination after register allocation has finished]'
  '-fgcse-las[perform redundant load after store elimination in global common subexpression elimination]'
  '-fgcse-lm[perform enhanced load motion during global common subexpression elimination]'
  '-fgcse[perform global common subexpression elimination]'
  '-fgcse-sm[perform store motion after global common subexpression elimination]'
  "-fgnu89-inline[use traditional GNU semantics for inline functions]"
  '-fgnu-tm[enable support for GNU transactional memory]'
  '-fgraphite[enable in and out of Graphite representation]'
  '-fgraphite-identity[enable Graphite Identity transformation]'
  '-fguess-branch-probability[enable guessing of branch probabilities]'
  '-fhoist-adjacent-loads[enable hoisting adjacent loads to encourage generating conditional move instructions]'
  "-fhosted[assume normal C execution environment]"
  '-fif-conversion2[perform conversion of conditional jumps to conditional execution]'
  '-fif-conversion[perform conversion of conditional jumps to branchless equivalents]'
  '-findirect-inlining[perform indirect inlining]'
  '-finhibit-size-directive[do not generate .size directives]'
  '-finline-atomics[inline __atomic operations when a lock free instruction sequence is available]'
  '-finline[enable inlining of function declared "inline", disabling disables all inlining]'
  '-finline-functions-called-once[integrate functions only required by their single caller]'
  '-finline-functions[integrate functions not declared "inline" into their callers when profitable]'
  '-finline-limit=-[limit the size of inlined functions to <number>]:number: '
  '-finline-small-functions[integrate functions into their callers when code size is known not to grow]'
  "-finput-charset=[specify the default character set for source files]:character set"
  '-finstrument-functions-exclude-file-list=-[do not instrument functions listed in files]:comma-separated file list:->commafiles'
  '-finstrument-functions-exclude-function-list=-[do not instrument listed functions]:comma-separated list of syms: '
  '-finstrument-functions[instrument function entry and exit with profiling calls]'
  '-fipa-bit-cp[perform interprocedural bitwise constant propagation]'
  '-fipa-cp-clone[perform cloning to make Interprocedural constant propagation stronger]'
  '-fipa-cp[perform interprocedural constant propagation]'
  '-fipa-icf-functions[perform Identical Code Folding for functions]'
  '-fipa-icf[perform Identical Code Folding for functions and read-only variables]'
  '-fipa-icf-variables[perform Identical Code Folding for variables]'
  '-fipa-profile[perform interprocedural profile propagation]'
  '-fipa-pta[perform interprocedural points-to analysis]'
  '-fipa-pure-const[discover pure and const functions]'
  '-fipa-ra[use caller save register across calls if possible]'
  '-fipa-reference[discover readonly and non addressable static variables]'
  '-fipa-sra[perform interprocedural reduction of aggregates]'
  '-fipa-vrp[perform IPA Value Range Propagation]'
  '-fira-algorithm=[set the used IRA algorithm]:algorithm:(cb priority)'
  '-fira-hoist-pressure[use IRA based register pressure calculation in RTL hoist optimizations]'
  '-fira-loop-pressure[use IRA based register pressure calculation in RTL loop optimizations]'
  '-fira-region=-[set regions for IRA]:region:(all mixed one)'
  '-fira-region=[set regions for IRA]:region:(one all mixed)'
  '-fira-share-save-slots[share slots for saving different hard registers]'
  '-fira-share-spill-slots[share stack slots for spilled pseudo-registers]'
  '-fira-verbose=-[control IRA'\''s level of diagnostic messages]:verbosity: '
  '-fisolate-erroneous-paths-attribute[detect paths that trigger erroneous or undefined behavior due to a null value being used in a way forbidden by a returns_nonnull or]'
  '-fisolate-erroneous-paths-dereference[detect paths that trigger erroneous or undefined behavior due to dereferencing a null pointer.  Isolate those paths from the main]'
  '-fivopts[optimize induction variables on trees]'
  '-fjump-tables[use jump tables for sufficiently large switch statements]'
  '-fkeep-inline-functions[generate code for functions even if they are fully inlined]'
  '-fkeep-static-consts[emit static const variables even if they are not used]'
  "-flax-vector-conversions[allow implicit conversions between vectors with differing numbers of subparts and/or differing element types]"
  '-fleading-underscore[give external symbols a leading underscore]'
  '-flifetime-dse[tell DSE that the storage for a C++ object is dead when the constructor starts and when the destructor finishes]'
  '-flive-range-shrinkage[relief of register pressure through live range shrinkage]'
  '-floop-nest-optimize[enable the loop nest optimizer]'
  '-floop-parallelize-all[mark all loops as parallel]'
  '-flra-remat[do CFG-sensitive rematerialization in LRA]'
  '-flto-compression-level=-[use specified zlib compression level for IL]:compression level: '
  '-flto-odr-type-merging[merge C++ types using One Definition Rule]'
  '-flto-partition=-[partition symbols and vars at linktime based on object files they originate from]:partitioning algorithm:(1to1 balanced max one none)'
  '-flto-report[report various link-time optimization statistics]'
  '-fmath-errno[set errno after built-in math functions]'
  '-fmax-errors=-[maximum number of errors to report]:errors: '
  '-fmem-report[report on permanent memory allocation]'
  '-fmem-report-wpa[report on permanent memory allocation in WPA only]'
  '-fmerge-all-constants[attempt to merge identical constants and constant variables]'
  '-fmerge-constants[attempt to merge identical constants across compilation units]'
  '-fmerge-debug-strings[attempt to merge identical debug strings across compilation units]'
  '-fmessage-length=-[limit diagnostics to <number> characters per line.  0 suppresses line-wrapping]:length: '
  '-fmodulo-sched-allow-regmoves[perform SMS based modulo scheduling with register moves allowed]'
  '-fmodulo-sched[perform SMS based modulo scheduling before the first scheduling pass]'
  '-fmove-loop-invariants[move loop invariant computations out of loops]'
  "-fms-extensions[don't warn about uses of Microsoft extensions]"
  "-fmudflapir[this switch lacks documentation]"
  "-fmudflap[this switch lacks documentation]"
  "-fmudflapth[this switch lacks documentation]"
  '-fnon-call-exceptions[support synchronous non-call exceptions]'
  '-fno-stack-limit[do not limit the size of the stack]'
  '-fno-threadsafe-statics[do not generate thread-safe code for initializing local statics]'
  '-fnothrow-opt[treat a throw() exception specification as noexcept to improve code size]'
  '-fomit-frame-pointer[when possible do not generate stack frames]'
  "-fopenacc[enable OpenACC]"
  "-fopenmp[enable OpenMP (implies -frecursive in Fortran)]"
  "-fopenmp-simd[enable OpenMP's SIMD directives]"
  '-foptimize-sibling-calls[optimize sibling and tail recursive calls]'
  '-foptimize-strlen[enable string length optimizations on trees]'
  '-fopt-info[enable all optimization info dumps on stderr]'
  '-fopt-info-type=-[dump compiler optimization details]:filename:_files'
  '-fpack-struct[pack structure members together without holes]'
  '-fpack-struct=[set initial maximum structure member alignment]:alignment (power of 2): '
  '-fpartial-inlining[perform partial inlining]'
  '-fpcc-struct-return[return small aggregates in memory, not registers]'
  "-fpch-deps[this switch lacks documentation]"
  "-fpch-preprocess[look for and use PCH files even when preprocessing]"
  '-fpeel-loops[perform loop peeling]'
  '-fpeephole2[enable an RTL peephole pass before sched2]'
  '-fpeephole[enable machine specific peephole optimizations]'
  '-fPIC[generate position-independent code if possible (large mode)]'
  '-fpic[generate position-independent code if possible (small mode)]'
  '-fPIE[generate position-independent code for executables if possible (large mode)]'
  '-fpie[generate position-independent code for executables if possible (small mode)]'
  "-fplan9-extensions[enable Plan 9 language extensions]"
  '-fplt[use PLT for PIC calls (-fno-plt- load the address from GOT at call site)]'
  '-fplugin-arg--[specify argument <key>=<value> for plugin <name>]:-fplugin-arg-name-key=value: ' #TODO
  '-fplugin=-[specify a plugin to load]:plugin: ' # TODO: complete plugins?
  '-fpost-ipa-mem-report[report on memory allocation before interprocedural optimization]'
  '-fpredictive-commoning[run predictive commoning optimization]'
  '-fprefetch-loop-arrays[generate prefetch instructions, if available, for arrays in loops]'
  '-fpre-ipa-mem-report[report on memory allocation before interprocedural optimization]'
  "-fpreprocessed[treat the input file as already preprocessed]"
  '-fprintf-return-value[treat known sprintf return values as constants]'
  '-fprofile-arcs[insert arc-based program profiling code]'
  '-fprofile-correction[enable correction of flow inconsistent profile data input]'
  '-fprofile-dir=-[set the top-level directory for storing the profile data]:profile directory:_files -/'
  '-fprofile[enable basic program profiling code]'
  '-fprofile-generate[enable common options for generating profile info for profile feedback directed optimizations]'
  '-fprofile-report[report on consistency of profile]'
  '-fprofile-use[enable common options for performing profile feedback directed optimizations]'
  '-fprofile-values[insert code to profile values of expressions]'
  '-frandom-seed=-[use <string> as random seed]:seed: '
  '-freciprocal-math[same as -fassociative-math for expressions which include division]'
  '-frecord-gcc-switches[record gcc command line switches in the object file]'
  '-free[turn on Redundant Extensions Elimination pass]'
  '-freg-struct-return[return small aggregates in registers]'
  '-frename-registers[perform a register renaming optimization pass]'
  '-freorder-blocks-algorithm=[set the used basic block reordering algorithm]:algorithm:(simple stc)'
  '-freorder-blocks-and-partition[reorder basic blocks and partition into hot and cold sections]'
  '-freorder-blocks[reorder basic blocks to improve code placement]'
  '-freorder-functions[reorder functions to improve code placement]'
  '-frequire-return-statement[functions which return values must end with return statements]'
  '-frerun-cse-after-loop[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]'
  '-frounding-math[disable optimizations that assume default FP rounding behavior]'
  '-frtti[generate run time type descriptor information]'
  "-fsanitize=-[enable AddressSanitizer, a memory error detector]:style:($sanitizers)"
  '-fsched2-use-superblocks[if scheduling post reload, do superblock scheduling]'
  '-fsched-critical-path-heuristic[enable the critical path heuristic in the scheduler]'
  '-fsched-dep-count-heuristic[enable the dependent count heuristic in the scheduler]'
  '-fsched-group-heuristic[enable the group heuristic in the scheduler]'
  '-fsched-interblock[enable scheduling across basic blocks]'
  '-fsched-last-insn-heuristic[enable the last instruction heuristic in the scheduler]'
  '-fsched-pressure[enable register pressure sensitive insn scheduling]'
  '-fsched-rank-heuristic[enable the rank heuristic in the scheduler]'
  '-fsched-spec[allow speculative motion of non-loads]'
  '-fsched-spec-insn-heuristic[enable the speculative instruction heuristic in the scheduler]'
  '-fsched-spec-load[allow speculative motion of some loads]'
  '-fsched-spec-load-dangerous[allow speculative motion of more loads]'
  '-fsched-stalled-insns[allow premature scheduling of queued insns]'
  '-fsched-stalled-insns-dep[set dependence distance checking in premature scheduling of queued insns]'
  '-fsched-stalled-insns-dep=[set dependence distance checking in premature scheduling of queued insns]:insns:'
  '-fsched-stalled-insns-dep=-[set dependence distance checking in premature scheduling of queued insns]:instructions: '
  '-fsched-stalled-insns=[set number of queued insns that can be prematurely scheduled]:insns:'
  '-fsched-stalled-insns=-[set number of queued insns that can be prematurely scheduled]:instructions: '
  '-fschedule-fusion[perform a target dependent instruction fusion optimization pass]'
  '-fschedule-insns2[reschedule instructions after register allocation]'
  '-fschedule-insns[reschedule instructions before register allocation]'
  '-fsched-verbose=-[set the verbosity level of the scheduler]:verbosity: '
  '-fsection-anchors[access data in the same section from shared anchor points]'
  '-fselective-scheduling2[run selective scheduling after reload]'
  '-fselective-scheduling[schedule instructions using selective scheduling algorithm]'
  '-fsel-sched-pipelining-outer-loops[perform software pipelining of outer loops during selective scheduling]'
  '-fsel-sched-pipelining[perform software pipelining of inner loops during selective scheduling]'
  '-fsel-sched-reschedule-pipelined[reschedule pipelined regions without pipelining]'
  "-fshort-double[use the same size for double as for float]"
  '-fshort-enums[use the narrowest integer type possible for enumeration types]'
  '-fshort-wchar[force the underlying type for "wchar_t" to be "unsigned short"]'
  '-fshow-column[show column numbers in diagnostics, when available]'
  '-fshrink-wrap[emit function prologues only before parts of the function that need it, rather than at the top of the function]'
  '-fshrink-wrap-separate[shrink-wrap parts of the prologue and epilogue separately]'
  '-fsignaling-nans[disable optimizations observable by IEEE signaling NaNs]'
  "-fsigned-bitfields[when signed or unsigned is not given make the bitfield signed]"
  "-fsigned-char[make char signed by default]"
  '-fsigned-zeros[disable floating point optimizations that ignore the IEEE signedness of zero]'
  '-fsimd-cost-model=[specifies the vectorization cost model for code marked with a simd directive]:model:(unlimited dynamic cheap)'
  '-fsingle-precision-constant[convert floating point constants to single precision constants]'
  '-fsplit-ivs-in-unroller[split lifetimes of induction variables when loops are unrolled]'
  '-fsplit-loops[perform loop splitting]'
  '-fsplit-paths[split paths leading to loop backedges]'
  '-fsplit-stack[generate discontiguous stack frames]'
  '-fsplit-wide-types[split wide types into independent registers]'
  '-fssa-backprop[enable backward propagation of use properties at the SSA level]'
  '-fssa-phiopt[optimize conditional patterns using SSA PHI nodes]'
  '-fstack-check=-[insert stack checking code into the program.  -fstack-check=specific if to argument given]:type:(none generic specific)'
  '-fstack-limit-register=-[trap if the stack goes past <register>]:register: '
  '-fstack-limit-symbol=-[trap if the stack goes past symbol <name>]:name: '
  '-fstack-protector-all[use a stack protection method for every function]'
  '-fstack-protector-explicit[use stack protection method only for functions with the stack_protect attribute]'
  '-fstack-protector-strong[use a smart stack protection method for certain functions]'
  '-fstack-protector[use propolice as a stack protection method]'
  '-fstack-reuse=[set stack reuse level for local variables]:level:(all named_vars none)'
  '-fstack-reuse=-[set stack reuse level for local variables]:reuse-level:(all named_vars none)'
  '-fstack-usage[output stack usage information on a per-function basis]'
  '-fstdarg-opt[optimize amount of stdarg registers saved to stack at start of function]'
  '-fstore-merging[merge adjacent stores]'
  '-fstrict-aliasing[assume strict aliasing rules apply]'
  '-fstrict-enums[assume that values of enumeration type are always within the minimum range of that type]'
  '-fstrict-overflow[treat signed overflow as undefined]'
  '-fstrict-volatile-bitfields[force bitfield accesses to match their type width]'
  '-fsync-libcalls[implement __atomic operations via libcalls to legacy __sync functions]'
  '-fsyntax-only[check for syntax errors, then stop]'
  "-ftabstop=[distance between tab stops for column reporting]:number"
  '-ftest-coverage[create data files needed by "gcov"]'
  '-fthread-jumps[perform jump threading optimizations]'
  '-ftime-report[report the time taken by each compiler pass]'
  '-ftls-model=-[set the default thread-local storage code generation model]:TLS model:(global-dynamic local-dynamic initial-exec local-exec)'
  '-ftracer[perform superblock formation via tail duplication]'
  "-ftrack-macro-expansion=[track locations of tokens coming from macro expansion and display them in error messages]::argument"
  '-ftrapping-math[assume floating-point operations can trap]'
  '-ftrapv[trap for signed overflow in addition, subtraction and multiplication]'
  '-ftree-bit-ccp[enable SSA-BIT-CCP optimization on trees]'
  '-ftree-builtin-call-dce[enable conditional dead code elimination for builtin calls]'
  '-ftree-ccp[enable SSA-CCP optimization on trees]'
  '-ftree-ch[enable loop header copying on trees]'
  '-ftree-coalesce-vars[enable SSA coalescing of user variables]'
  '-ftree-copy-prop[enable copy propagation on trees]'
  '-ftree-cselim[transform condition stores into unconditional ones]'
  '-ftree-dce[enable SSA dead code elimination optimization on trees]'
  '-ftree-dominator-opts[enable dominator optimizations]'
  '-ftree-dse[enable dead store elimination]'
  '-ftree-forwprop[enable forward propagation on trees]'
  '-ftree-fre[enable Full Redundancy Elimination (FRE) on trees]'
  '-ftree-loop-distribute-patterns[enable loop distribution for patterns transformed into a library call]'
  '-ftree-loop-distribution[enable loop distribution on trees]'
  '-ftree-loop-if-convert[convert conditional jumps in innermost loops to branchless equivalents]'
  '-ftree-loop-im[enable loop invariant motion on trees]'
  '-ftree-loop-ivcanon[create canonical induction variables in loops]'
  '-ftree-loop-linear[enable loop interchange transforms.  Same as  -floop-interchange]'
  '-ftree-loop-optimize[enable loop optimizations on tree level]'
  '-ftree-loop-vectorize[enable loop vectorization on trees]'
  '-ftree-lrs[perform live range splitting during the SSA- >normal pass]'
  '-ftree-parallelize-loops=[enable automatic parallelization of loops]'
  '-ftree-parallelize-loops=-[enable automatic parallelization of loops]:threads: '
  '-ftree-partial-pre[in SSA-PRE optimization on trees, enable partial- partial redundancy elimination]'
  '-ftree-phiprop[enable hoisting loads from conditional pointers]'
  '-ftree-pre[enable SSA-PRE optimization on trees]'
  '-ftree-pta[perform function-local points-to analysis on trees]'
  '-ftree-reassoc[enable reassociation on tree level]'
  '-ftree-scev-cprop[enable copy propagation of scalar-evolution information]'
  '-ftree-sink[enable SSA code sinking on trees]'
  '-ftree-slp-vectorize[enable basic block vectorization (SLP) on trees]'
  '-ftree-slsr[perform straight-line strength reduction]'
  '-ftree-sra[perform scalar replacement of aggregates]'
  '-ftree-switch-conversion[perform conversions of switch initializations]'
  '-ftree-tail-merge[enable tail merging on trees]'
  '-ftree-ter[replace temporary expressions in the SSA->normal pass]'
  '-ftree-vectorize[enable vectorization on trees]'
  '-ftree-vrp[perform Value Range Propagation on trees]'
  '-funconstrained-commons[assume common declarations may be overridden with ones with a larger trailing array]'
  '-funroll-all-loops[perform loop unrolling for all loops]'
  '-funroll-loops[perform loop unrolling when iteration count is known]'
  '-funsafe-loop-optimizations[allow loop optimizations to assume that the loops behave in normal way]'
  '-funsafe-math-optimizations[allow math optimizations that may violate IEEE or ISO standards]'
  "-funsigned-bitfields[when signed or unsigned is not given make the bitfield unsigned]"
  "-funsigned-char[make char unsigned by default]"
  '-funswitch-loops[perform loop unswitching]'
  '-funwind-tables[just generate unwind tables for exception handling]'
  '-fuse-ld=-[use the specified linker instead of the default linker]:linker:(bfd gold)'
  '-fuse-linker-plugin[use linker plugin during link-time optimization]'
  '-fvariable-expansion-in-unroller[apply variable expansion when loops are unrolled]'
  '-fvar-tracking-assignments[perform variable tracking by annotating assignments]'
  '-fvar-tracking-assignments-toggle[toggle -fvar-tracking-assignments]'
  '-fvar-tracking[perform variable tracking]'
  '-fvar-tracking-uninit[perform variable tracking and also tag variables that are uninitialized]'
  '-fvect-cost-model=[specifies the cost model for vectorization]:model:(unlimited dynamic cheap)'
  '-fverbose-asm[add extra commentary to assembler output]'
  '-fvisibility=-[set the default symbol visibility]:visibility:(default internal hidden protected)'
  '-fvpt[use expression value profiles in optimizations]'
  '-fweb[construct webs and split unrelated uses of single variable]'
  '-fwhole-program[perform whole program optimizations]'
  "-fwide-exec-charset=[convert all wide strings and character constants to character set]:character set"
  "-fworking-directory[generate a #line directive pointing at the current working directory]"
  '-fwrapv[assume signed arithmetic overflow wraps around]'
  '-fzero-initialized-in-bss[put zero initialized data in the bss section]'
  {-g-,--debug=}'[generate debug information]::debugging information type or level:(0 1 2 3 gdb gdb0 gdb1 gdb2 gdb3 coff stabs stabs+ dwarf dwarf+ dwarf-2 dwarf-3 dwarf-4 dwarf-5 dwarf32 dwarf64 xcoff xcoff+)'
  '-gno-pubnames[don'\''t generate DWARF pubnames and pubtypes sections]'
  '-gno-record-gcc-switches[don'\''t record gcc command line switches in DWARF DW_AT_producer]'
  '-gno-split-dwarf[don'\''t generate debug information in separate .dwo files]'
  '-gno-strict-dwarf[emit DWARF additions beyond selected version]'
  '-gpubnames[generate DWARF pubnames and pubtypes sections]'
  '-grecord-gcc-switches[record gcc command line switches in DWARF DW_AT_producer]'
  '-gsplit-dwarf[generate debug information in separate .dwo files]'
  '-gstrict-dwarf[don'\''t emit DWARF additions beyond selected version]'
  '-gtoggle[toggle debug information generation]'
  '-gvms[generate debug information in VMS format]'
  '--help[display this information]'
  {-H,--trace-includes}'[print name of each header file used]'
  {'*-idirafter','*--include-directory-after='}'[add directory after include search path]:second include path directory:_files -/'
  {'*-I-','*--include-directory='}'[add directory to include search path]:header file search path:_files -/'
  {'*-imacros','*--imacros='}'[include macros from file before parsing]:macro input file:_files -g \*.h\(-.\)'
  '-imultiarch[set <dir> to be the multiarch include subdirectory]:directory:_files -/' #XXX not in manpage
  "-imultilib=[set dir to be the multilib include subdirectory]:dir:_files -/"
  "--include-barrier[restrict all prior -I flags to double-quoted inclusion and remove current directory from include path]"
  {'*-include=','*--include='}'[include file before parsing]:include file:_files -g \*.h\(-.\)'
  '-iplugindir=-[set <dir> to be the default plugin directory]:directory:_files -/'
  {'*-iprefix','*--include-prefix='}'[set the -iwithprefix prefix]:prefix:_files'
  "-iquote=[add dir to the end of the quote include path]:dir:_files -/"
  "-isysroot=[set dir to be the system root directory]:dir:_files -/"
  '*-isystem[add directory to system include search path]:second include path directory (system):_files -/'
  {'*-iwithprefixbefore','*--include-with-prefix-before='}'[set directory to include search path with prefix]:main include path directory:_files -/'
  {'*-iwithprefix','*--include-with-prefix=','*--include-with-prefix-after='}'[set directory to system include search path with prefix]:second include path directory:_files -/'
  '*-L-[add directory to library search path]:library search path:_files -/'
  "-lang-asm[set lang asm]"
  '*-l+[include library found in search path]:library:->library'
  "-MF[write dependency output to the given file]:file:_files"
  "-MJ[write a compilation database entry per input]"
  "-MQ[add a make-quoted target]:target"
  '*-M-[set flags for generating Makefile dependencies]::output dependencies:->dependencies'
  "-MT[add an unquoted target]:target"
  '-no-canonical-prefixes[do not canonicalize paths when building relative prefixes to other gcc components]'
  '-nodefaultlibs[do not use the standard system libraries when linking]'
  '-nostartfiles[do not use the standard system startup files when linking]'
  {-nostdinc,--no-standard-includes}"[do not search standard system directories or compiler builtin directories for include files]"
  '-nostdlib[do not use standard system startup files or libraries when linking]'
  {-O-,--optimize=-}'[control the optimization]::optimization level:((0 1 2 3 g\:optimize\ for\ debugging\ experience s\:optimize\ for\ space fast\:optimize\ for\ speed\ disregarding\ exact\ standards\ compliance))'
  {-o,--output=}'[write output to file]:output file:_files -g "^*.(c|h|cc|C|cxx|cpp|hpp)(-.)"'
  "--output-pch=[output pch]"
  '--param[set parameter <param> to value.  See manpage for a complete list of parameters]:name=value'
  '-pass-exit-codes[exit with highest error code from a phase]'
  {-pedantic-errors,--pedantic-errors}'[like -pedantic but issue them as errors]'
  {-pedantic,--pedantic}'[issue all mandatory diagnostics in the C standard]'
  '(-pg)-p[enable function profiling for prof]'
  '-pie[create a position independent executable]'
  {-pipe,--pipe}'[use pipes rather than intermediate files]'
  {-P,--no-line-commands}'[inhibit generation of linkemakers during preprocess]'
  '(-p)-pg[enable function profiling for gprof]'
  '-###[print commands to run this compilation]'
  '-print-file-name=-[display the full path to library <library>]:library:->library'
  '-print-libgcc-file-name[display the name of the compiler'\''s companion library]'
  "--print-missing-file-dependencies[print missing file dependencies]"
  '-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-prog-name=-[display the full path to compiler component <program>]:program:'
  '-print-search-dirs[display the directories in the compiler'\''s search path]'
  '-print-sysroot[display the target libraries directory]'
  '-print-sysroot-headers-suffix[display the sysroot suffix used to find headers]'
  {-Qn,-fno-ident}"[do not emit metadata containing compiler name and version]"
  '-quiet[do not display functions compiled or elapsed time]'
  {-Qy,-fident}"[emit metadata containing compiler name and version]"
  '-rdynamic[pass the flag -export-dynamic to the ELF linker, on targets that support it]'
  "-remap[remap file names when including files]"
  {-S,--assemble}'[compile only; do not assemble or link]'
  '-save-stats=-[save code generation statistics]:location:(cwd obj)'
  '-save-temps[do not delete intermediate files]'
  '-shared[create a shared library]'
  '-shared-libgcc[force shared libgcc]'
  '*-specs=-[override built-in specs with the contents of <file>]:file:_files'
  '-s[remove all symbol table and relocation information from the executable]'
  '-static-libgcc[force static libgcc]'
  '-static[on systems that support dynamic linking, this prevents linking with the shared libraries]'
  {'-std=-','--std='}'[assume that the input sources are for specified standard]:standard:(c90 c89 iso9899\:1990 iso9899\:199409 c99 iso9899\:1999 c11 iso9899\:2011 gnu90 gnu89 gnu99 gnu11 c++98 c++03 gnu++98 gnu++03 c++11 gnu++11 c++1y gnu++1y c++14 gnu++14 c++1z gnu++1z c++17 iso9899\:2017 gnu++17 c++2a gnu++2a)'
  '-symbolic[bind references to global symbols when building a shared object]'
  '--sysroot=-[use <directory> as the root directory for headers and libraries]:directory:_files -/'
  '--target-help[display target specific command line options]'
  '-time[time the execution of each subprocess]'
  {-traditional-cpp,--traditional-cpp}"[use traditional preprocessor]"
  {-trigraphs,--trigraphs}"[process trigraph sequences]"
  '-T[specify linker script]:linker script:_files'
  "-undef[do not predefine system specific and gcc specific macros]"
  '*-u[pretend symbol to be undefined]:symbol:'
  "--user-dependencies[print user dependencies]"
  {'*-U-','*--undefine-macro='}'[undefine a macro]:undefine macro:'
  '-version[display the compiler'\''s version]'
  '--version[display version information]'
  '-V[specify compiler version]:compiler version:'
  {-v,--verbose}'[enable verbose output]'
  '*-Wa,-[pass arguments to the assembler]:assembler option:'
  '--warn--[enable the specified warning]:warning:->warning'
  '-Werror=-[treat specified warning as error (or all if none specified)]::warning:->warning'
  '-Wfatal-errors[exit on the first error occurred]'
  '*-Wl,-[pass arguments to the linker]:linker option:'
  {-w,--no-warnings}'[suppress warnings]'
  '*-Wp,-[pass arguments to the preprocessor]:preprocessor option:'
  "--write-dependencies[write a depfile containing user and system dependencies]"
  "--write-user-dependencies[write a depfile containing user dependencies]"
  '*-Xassembler[pass argument to the assembler]:assembler option:'
  '*-Xlinker[pass argument to the linker]:linker option:'
  '*-Xpreprocessor[pass argument to the preprocessor]:preprocessor option:'
  '-x[specify the language of the following input files]:input file language:('"$languages"')'
)

# not meant for end users
#'-fdisable--pass=-[disables an optimization pass]:range1+range2: '
#'-fdisable-[disables an optimization pass]'
#'-fenable--pass=-[enables an optimization pass]:range1+range2: '
#'-fenable-[enables an optimization pass]'
#'-fdump-<type>[dump various compiler internals to a file]'

args+=($warnings)

# How to mostly autogenerate the above stuff:
# joinhelplines() { sed '$!N;s/^\(  -.*\)\n  \s*\([^-]\)/\1 \2/;P;D' }
# gcc-x86() { gcc --help=target,\^undocumented | joinhelplines | joinhelplines }
# compdef _gnu_generic gcc-x86
# printf '%s\n' ${(onq-)_args_cache_gcc_x86}
_arguments -C -M 'L:|-{fWm}no-=-{fWm} r:|=*' \
  "$args[@]" \
  "$args2[@]" && ret=0

case "$state" in
dump)
  local -a dump_values=(
    'A[verbose assembly output]'
    'D[macro definitions and normal output]'
    'I[include directives and normal output]'
    'J[after last jump optimization]'
    'L[after loop optimization]'
    'M[only macro definitions]'
    'N[macro names]'
    'R[after second instruction scheduling pass]'
    'S[after first instruction scheduling pass]'
    'a[all dumps]'
    'c[after instruction combination]'
    'd[after delayed branch scheduling]'
    'f[after flow analysis]'
    'g[after global register allocation]'
    'j[after jump optimization]'
    'k[after conversion from registers to stack]'
    'l[after local register allocation]'
    'm[print memory usage statistics]'
    'p[annotate assembler output]'
    'r[after RTL generation]'
    's[after CSE]'
    't[after second CSE pass]'
    'x[only generate RTL]'
    'y[debugging information during parsing]'
  )
  _values -s '' 'dump information' $dump_values && ret=0
  ;;
dependencies)
  local -a dependencies=(
    "D:generate make dependencies and compile"
    "G:treat missing header files as generated"
    "M:only user header files"
    "MD:output to file"
    "P:generate phony targets for all headers"
    "V:use NMake/Jom format for the depfile"
  )
  _describe dependencies dependencies && ret=0
  ;;
library)
  local -a library_path
  if [[ -n "$LD_LIBRARY_PATH" ]]; then
    library_path=(${=LD_LIBRARY_PATH//:/ })
  else
    library_path=(
      "/usr/lib"
      "/usr/local/lib"
      "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib"
    )
  fi
  _wanted libraries expl library \
      compadd - $library_path/lib*.(a|so*|dylib)(:t:fr:s/lib//) && ret=0
  ;;
rundir)
  compset -P '*:'
  compset -S ':*'
  _files -/ -S/ -r '\n\t\- /:' "$@" && ret=0
  ;;
help)
  _values -s , 'help' \
    optimizers warnings target params common \
    c c++ objc objc++ lto ada adascil adawhy fortran go java \
    {\^,}undocumented {\^,}joined {\^,}separate \
  && ret=0
  ;;
dirtodir)
  compset -P '*='
  _files -/ && ret=0
  ;;
commafiles)
  compset -P '*,'
  _files && ret=0
  ;;
framework)
  local -a framework_path=(
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks
  )
  local path
  local -a frameworks
  for path in $framework_path; do
    frameworks+=($path/*.framework(:t:r))
  done
  _wanted frameworks expl framework compadd -a frameworks && ret=0
  ;;
warning)
  local -a warning_names
  for warning in $warnings; do
    if [[ "$warning" = (#b)-W([^=\[]##)[^\[]#\[(*)\]* ]]; then
      warning_names+=("$match[1]:$match[2]")
    fi
  done
  _describe warning warning_names && ret=0
  ;;
arch)
  _wanted cputypes expl "CPU type" compadd -a arch && ret=0
  ;;
archgeneric)
  arch+=(generic)
  _wanted cputypes expl "CPU type" compadd -a arch && ret=0
  ;;
esac

return ret


[-- Attachment #2: Type: text/plain, Size: 4409 bytes --]



I made some improvements to the _gcc completion script to better handle macOS and clang. Hopefully, you like them.

Enabled The -l option to complete .dylib files as well as .so* and .a.

Allowed the -l option to take an argument right after it, and gave it a description. For example -ly or -lz.

The current completion for the argument of -l wouldn't work if the $LD_LIBRARY_PATH had more than one path in it, because paths are separated by : traditionally in that variable, so I made sure completion works if there are :'s in it. Also I added /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib to the default path since that's the one macOS uses.

Added the -framework option, and completed the names of frameworks it can take. frameworks are macOS's style of library.

Added all the -fobjc- options like -fobjc-arc, -fobjc-abi-version, -fobjc-runtime, -F, etc.

Added the -e, --entry option to the generic section since it was missing before.

Added the --include option, it already had -include, but I found --include while looking at the clang docs, and verified it also works with gcc, so I put it right next to the -include option.

I changed the input file type because sometimes it's useful to include library files on the command line, and these have extensions .so*, .a, .dylib, or even with no extension like in mac's frameworks. I thought it better if it just completed all files and not just .c, .cpp, .m, etc.

Gave option descriptions to the options that didn't have one before, like -o, -d, -g, -O, -Wl

Lowercased the first letter of all the option descriptions. This seems to be convention in other scripts like _find, _chmod, and _git.

I removed -fprint-source-range-info, I didnt see it in the clang docs, and the option doesn't work. It probably meant -fdiagnostics-print-source-range-info.

I removed the matchspec "r:|[_-]=*" from the _arguments call because there were certain options where I would try to complete them, and they positioned the cursor elsewhere unexpectedly. for example, I wrote "clang --opt<tab>" and after it completed up until --optimiz, it positioned me on the second - when I expected to be at the end of the fully completed option, --optimize=. also it didn't fully complete, it left it at --optimiz.

I combined options whose descriptions used to be "same as -x". So -O and --optimize, -w and --no-warnings, -v and --verbose.

I added options from "gcc --help=c", that didn't already exist, such as -ansi, --all-warnings, --assert, and others.

I needed to add a dependency flag for the -M option, so instead of adding it to the existing list ((...)), I coverted that action to ->dependency style action, and added the new value at the end of the script. The new flags are -MD and -MP.

I sorted all the -Wwarning-name options, it makes it easier to look through the list.

I added a completion for arguments to -Werror= which is used to turn warnings into errors, it has to extract the name of the warning from all the -Wwarning options, for example -Wvla will cause -Werror=vla to be a completion. To do this I had to extract the warnings arguments into their own array, and make sure they are separated from other -W options that are not warnings, such as -Werror, -Wfatal-errors, and -Wl.

I use this same completion for the --warn-name options.

I removed duplicate options --verbose, -fassociative-math, -fauto-inc-dec, -fdelete-dead-exceptions, -ffunction-cse, -fgraphite, -findirect-inlining, -fira-loop-pressure, -fira-share-save-slots, -fira-share-spill-slots, -fmodulo-sched-allow-regmoves, -fopt-info,
-fpartial-inlining, -freciprocal-math, -fstack-protector-all, -fstack-protector, -fstrict-overflow, -fstrict-volatile-bitfields, -ftracer, -Weffc++.

I found the grouping of options based on which --help=type wasn't all that useful and made it harder to spot the duplicates. The options are still grouped by: target dependent options, clang only options, gcc only options, warnings, then all the rest, because they need to be.

I went over every option listed on https://clang.llvm.org/docs/ClangCommandLineReference.html, and made sure to add them, If I saw that gcc supported the option, I added it to a common location, if not, I added it to only clang's completion. This adds a large number of options, we may want to comment some of these out.

Thanks for looking at all this.


^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-12  4:07 Improvements to the gcc completion script Jacob Gelbman
@ 2021-03-19  3:51 ` Jun T
  2021-03-22  2:28   ` Jacob Gelbman
  0 siblings, 1 reply; 9+ messages in thread
From: Jun T @ 2021-03-19  3:51 UTC (permalink / raw)
  To: zsh-workers

Thank you for lots of improvements!

Please consider the following points (some of them already existed
before your improvements):


In args for clang (line 509 and below), there are several duplicated options
such as -fshow-source-location, -lazy_framework, etc.

Some options (such as -fauto-profile) can take optional argument.
For these, it would be better to use
--fauto-profile=-::message:action
instead of duplicating it with and without arg.


> 2021/03/12 13:07, Jacob Gelbman <gelbman@gmail.com> wrote:

> The current completion for the argument of -l wouldn't work if the $LD_LIBRARY_PATH had more than one path in it, because paths are separated by : traditionally in that variable, so I made sure completion works if there are :'s in it. Also I added /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib to the default path since that's the one macOS uses.

I think LD_LIBRARY_PATH is not used at link time (it is used only at run time),
and we can ignore it when completing libraries ( -l<TAB> ). Is this correct?

TODO (you can left this for someone else):
Add directories specified by -L/path/to/dir on the command line to library_path.


> Added the -framework option, and completed the names of frameworks it can take. frameworks are macOS's style of library.

-F, -iframework and -iframeworkwithsysroot can be specified multiple times.
Please use '*-F' etc for optspec.
For -iframework you can use '_files -/' as action (like -F).
# -iframeworkwithsysroot is meaningful only with -isysroot, and, ideally,
# '-iframeworkwithsysroot <TAB>' should offer directory relative to isysroot.
# But I think such an elaboration would not be necessary.

-framework, -lazy_framework and -weak_framework can also be specified multiple times.
The latter two can use '->framework' as action (as -framework).

It would be better to include Framework-related stuff only if '$OSTYPE = darwin*'.

I don't have any detailed knowledge of how Apple's command line tools work,
but probably it would better to use the output of 'xcrun --show-sdk-path' instead of 
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk.

TODO: Add directory specified by -F/path/to/dir to framework_path

> I changed the input file type because sometimes it's useful to include library files on the command line, and these have extensions .so*, .a, .dylib, or even with no extension like in mac's frameworks. I thought it better if it just completed all files and not just .c, .cpp, .m, etc.

I believe most users will not like this. Instead, please use something like 
zstyle ':completion:*:*:gcc:argument-rest:*' file-patterns '*'
for your personal customization.


> I removed the matchspec "r:|[_-]=*" from the _arguments call because there were certain options where I would try to complete them, and they positioned the cursor elsewhere unexpectedly. for example, I wrote "clang --opt<tab>" and after it completed up until --optimiz, it positioned me on the second - when I expected to be at the end of the fully completed option, --optimize=. also it didn't fully complete, it left it at --optimiz.

I can't reproduce your problem.
The matcher 'r:|[_-]=*' is quite useful and better not to be removed since it allows
gcc -fd-s-l<TAB>
to be completed to
gcc -fdiagnostics-show-location=


> I added a completion for arguments to -Werror= ... (snip)

Thanks. I think -Werror can also be specified multiple times ('*-Werror=-').

----
Jun

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-19  3:51 ` Jun T
@ 2021-03-22  2:28   ` Jacob Gelbman
  2021-03-22  2:29     ` Jacob Gelbman
  2021-03-22 15:18     ` Jun. T
  0 siblings, 2 replies; 9+ messages in thread
From: Jacob Gelbman @ 2021-03-22  2:28 UTC (permalink / raw)
  To: Jun T; +Cc: zsh-workers



> On Mar 18, 2021, at 11:51 PM, Jun T <takimoto-j@kba.biglobe.ne.jp> wrote:
> 
> Thank you for lots of improvements!
> 
> Please consider the following points (some of them already existed
> before your improvements):
> 
> 
> In args for clang (line 509 and below), there are several duplicated options
> such as -fshow-source-location, -lazy_framework, etc.

Thanks, not sure how I completely missed some of these duplicates. -fshow-source-location, -lazy_framework, -fcaret-diagnostics, -fdiagnostics-fixit-info, -fdiagnostics-print-source-range-info, -init, -install_name, -interface-stub-version, -keep_private_externs, -lazy_library.

> 
> Some options (such as -fauto-profile) can take optional argument.
> For these, it would be better to use
> --fauto-profile=-::message:action
> instead of duplicating it with and without arg.
> 

I combined these options into one option with an optional argument: -fauto-profile, -fcf-protection, -fmemory-profile, -fprofile-instr-generate, -fprofile-instr-use, -fprofile-sample-use, -fsanitize-memory-track-origins, -fsanitize-recover, -fsanitize-trap, -fsave-optimization-record, -gz

I made sure -ftemplate-depth takes the extra - at the end, this option should look like -ftemplate-depth-5 not -ftemplate-depth5.

> 
> I think LD_LIBRARY_PATH is not used at link time (it is used only at run time),
> and we can ignore it when completing libraries ( -l<TAB> ). Is this correct?

I thought the same but wasn't 100% sure, so I left it in, but I tried it and it doesn't work, so I removed using this variable.

> 
> TODO (you can left this for someone else):
> Add directories specified by -L/path/to/dir on the command line to library_path.

I did it.

> 
> 
>> Added the -framework option, and completed the names of frameworks it can take. frameworks are macOS's style of library.
> 
> -F, -iframework and -iframeworkwithsysroot can be specified multiple times.
> Please use '*-F' etc for optspec.
> For -iframework you can use '_files -/' as action (like -F).

Okay.

> # -iframeworkwithsysroot is meaningful only with -isysroot, and, ideally,
> # '-iframeworkwithsysroot <TAB>' should offer directory relative to isysroot.
> # But I think such an elaboration would not be necessary.
> 
> -framework, -lazy_framework and -weak_framework can also be specified multiple times.
> The latter two can use '->framework' as action (as -framework).

Okay.

> 
> It would be better to include Framework-related stuff only if '$OSTYPE = darwin*'.

I think clang on linux would recognize the -framework option and pass it on to the linker, which would probably fail. but, I think there's a way of setting up linux to be able to compile Objective-C programs with frameworks using gnustep or some other collection. I've never done it though.

> 
> I don't have any detailed knowledge of how Apple's command line tools work,
> but probably it would better to use the output of 'xcrun --show-sdk-path' instead of 
> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk.

I would use use clang -Wl,-v but it could be a bit tricky to get it to cache correctly, so I left that one be for now.
> 
> TODO: Add directory specified by -F/path/to/dir to framework_path

I did this.

> 
>> I changed the input file type because sometimes it's useful to include library files on the command line, and these have extensions .so*, .a, .dylib, or even with no extension like in mac's frameworks. I thought it better if it just completed all files and not just .c, .cpp, .m, etc.
> 
> I believe most users will not like this. Instead, please use something like 
> zstyle ':completion:*:*:gcc:argument-rest:*' file-patterns '*'
> for your personal customization.

I put it back to the way it was, but my vote is to change it.

> 
> 
>> I removed the matchspec "r:|[_-]=*" from the _arguments call because there were certain options where I would try to complete them, and they positioned the cursor elsewhere unexpectedly. for example, I wrote "clang --opt<tab>" and after it completed up until --optimiz, it positioned me on the second - when I expected to be at the end of the fully completed option, --optimize=. also it didn't fully complete, it left it at --optimiz.
> 
> I can't reproduce your problem.
> The matcher 'r:|[_-]=*' is quite useful and better not to be removed since it allows
> gcc -fd-s-l<TAB>
> to be completed to
> gcc -fdiagnostics-show-location=
> 

I miswrote how to reproduce it. You type --opti<tab>, not --opt<tab>, then you'll see it position the cursor -<here>-optimiz. This sort of thing is especially annoying if you bind tab to expand-or-complete-prefix.

> 
>> I added a completion for arguments to -Werror= ... (snip)
> 
> Thanks. I think -Werror can also be specified multiple times ('*-Werror=-').

I fixed it.

> 
> ----
> Jun



^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-22  2:28   ` Jacob Gelbman
@ 2021-03-22  2:29     ` Jacob Gelbman
  2021-03-22 15:18     ` Jun. T
  1 sibling, 0 replies; 9+ messages in thread
From: Jacob Gelbman @ 2021-03-22  2:29 UTC (permalink / raw)
  To: Jun T; +Cc: zsh-workers

[-- Attachment #1: Type: text/plain, Size: 5173 bytes --]

And the script: 

> On Mar 21, 2021, at 10:28 PM, Jacob Gelbman <gelbman@gmail.com> wrote:
> 
> 
> 
>> On Mar 18, 2021, at 11:51 PM, Jun T <takimoto-j@kba.biglobe.ne.jp <mailto:takimoto-j@kba.biglobe.ne.jp>> wrote:
>> 
>> Thank you for lots of improvements!
>> 
>> Please consider the following points (some of them already existed
>> before your improvements):
>> 
>> 
>> In args for clang (line 509 and below), there are several duplicated options
>> such as -fshow-source-location, -lazy_framework, etc.
> 
> Thanks, not sure how I completely missed some of these duplicates. -fshow-source-location, -lazy_framework, -fcaret-diagnostics, -fdiagnostics-fixit-info, -fdiagnostics-print-source-range-info, -init, -install_name, -interface-stub-version, -keep_private_externs, -lazy_library.
> 
>> 
>> Some options (such as -fauto-profile) can take optional argument.
>> For these, it would be better to use
>> --fauto-profile=-::message:action
>> instead of duplicating it with and without arg.
>> 
> 
> I combined these options into one option with an optional argument: -fauto-profile, -fcf-protection, -fmemory-profile, -fprofile-instr-generate, -fprofile-instr-use, -fprofile-sample-use, -fsanitize-memory-track-origins, -fsanitize-recover, -fsanitize-trap, -fsave-optimization-record, -gz
> 
> I made sure -ftemplate-depth takes the extra - at the end, this option should look like -ftemplate-depth-5 not -ftemplate-depth5.
> 
>> 
>> I think LD_LIBRARY_PATH is not used at link time (it is used only at run time),
>> and we can ignore it when completing libraries ( -l<TAB> ). Is this correct?
> 
> I thought the same but wasn't 100% sure, so I left it in, but I tried it and it doesn't work, so I removed using this variable.
> 
>> 
>> TODO (you can left this for someone else):
>> Add directories specified by -L/path/to/dir on the command line to library_path.
> 
> I did it.
> 
>> 
>> 
>>> Added the -framework option, and completed the names of frameworks it can take. frameworks are macOS's style of library.
>> 
>> -F, -iframework and -iframeworkwithsysroot can be specified multiple times.
>> Please use '*-F' etc for optspec.
>> For -iframework you can use '_files -/' as action (like -F).
> 
> Okay.
> 
>> # -iframeworkwithsysroot is meaningful only with -isysroot, and, ideally,
>> # '-iframeworkwithsysroot <TAB>' should offer directory relative to isysroot.
>> # But I think such an elaboration would not be necessary.
>> 
>> -framework, -lazy_framework and -weak_framework can also be specified multiple times.
>> The latter two can use '->framework' as action (as -framework).
> 
> Okay.
> 
>> 
>> It would be better to include Framework-related stuff only if '$OSTYPE = darwin*'.
> 
> I think clang on linux would recognize the -framework option and pass it on to the linker, which would probably fail. but, I think there's a way of setting up linux to be able to compile Objective-C programs with frameworks using gnustep or some other collection. I've never done it though.
> 
>> 
>> I don't have any detailed knowledge of how Apple's command line tools work,
>> but probably it would better to use the output of 'xcrun --show-sdk-path' instead of 
>> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk.
> 
> I would use use clang -Wl,-v but it could be a bit tricky to get it to cache correctly, so I left that one be for now.
>> 
>> TODO: Add directory specified by -F/path/to/dir to framework_path
> 
> I did this.
> 
>> 
>>> I changed the input file type because sometimes it's useful to include library files on the command line, and these have extensions .so*, .a, .dylib, or even with no extension like in mac's frameworks. I thought it better if it just completed all files and not just .c, .cpp, .m, etc.
>> 
>> I believe most users will not like this. Instead, please use something like 
>> zstyle ':completion:*:*:gcc:argument-rest:*' file-patterns '*'
>> for your personal customization.
> 
> I put it back to the way it was, but my vote is to change it.
> 
>> 
>> 
>>> I removed the matchspec "r:|[_-]=*" from the _arguments call because there were certain options where I would try to complete them, and they positioned the cursor elsewhere unexpectedly. for example, I wrote "clang --opt<tab>" and after it completed up until --optimiz, it positioned me on the second - when I expected to be at the end of the fully completed option, --optimize=. also it didn't fully complete, it left it at --optimiz.
>> 
>> I can't reproduce your problem.
>> The matcher 'r:|[_-]=*' is quite useful and better not to be removed since it allows
>> gcc -fd-s-l<TAB>
>> to be completed to
>> gcc -fdiagnostics-show-location=
>> 
> 
> I miswrote how to reproduce it. You type --opti<tab>, not --opt<tab>, then you'll see it position the cursor -<here>-optimiz. This sort of thing is especially annoying if you bind tab to expand-or-complete-prefix.
> 
>> 
>>> I added a completion for arguments to -Werror= ... (snip)
>> 
>> Thanks. I think -Werror can also be specified multiple times ('*-Werror=-').
> 
> I fixed it.
> 
>> 
>> ----
>> Jun


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#compdef gcc g++ cc c++ llvm-gcc llvm-g++ clang clang++ -value-,LDFLAGS,-default- -value-,CFLAGS,-default- -value-,CXXFLAGS,-default- -value-,CPPFLAGS,-default- -P gcc-* -P g++-* -P c++-*

local curcontext="$curcontext" state line ret=1 expl
local -a args args2 warnings arch
typeset -A opt_args

if [[ "$service" = -value-* ]]; then
  compset -q
  words=( fake "$words[@]" )
  (( CURRENT++ ))
  if [[ "$service" = *LDFLAGS ]]; then
    args2=( '-R:runtime path:->rundir' )
  else
    args2=()
  fi
else
  # On some systems (macOS), cc/gcc/g++ are actually clang; treat them accordingly
  [[ $service != clang* ]] &&
  _pick_variant clang=clang unix --version &&
  service=clang-$service

  # args2=( '*:input file:_files' )
  args2=( '*:input file:_files -g "*.([cCmisSoak]|cc|cpp|cxx|ii|k[ih])(-.)"' )
fi

args=()
case $MACHTYPE in

m68*)
  args=(
    -m68000 -m68020 -m68020-40 -m68030 -m68040 -m68881
    -mbitfield -mc68000 -mc68020 -mfpa -mnobitfield
    -mrtd -mshort -msoft-float
  )
  ;;

vax)
  args=(
    -mg -mgnu -munix
  )
  ;;

c[1234]*)
  args=(
    -mc1 -mc2 -mc32 -mc34 -mc38
    -margcount -mnoargcount
    -mlong32 -mlong64
    -mvolatile-cache -mvolatile-nocache
  )
  ;;

amd290?0)
  args=(
    -m29000 -m29050 -mbw -mnbw -mdw -mndw
    -mlarge -mnormal -msmall
    -mkernel-registers -mno-reuse-arg-regs
    -mno-stack-check -mno-storem-bug
    -mreuse-arg-regs -msoft-float -mstack-check
    -mstorem-bug -muser-registers
  )
  ;;

arm)
  args=(
    -mapcs -m2 -m3 -m6 -mbsd -mxopen -mno-symrename
    "-faapcs-bitfield-load[all volatile bit-field write generates at least one load]"
    "-faapcs-bitfield-width[volatile bit-field width is dictated by the field container type]"
    "-mcmse[allow use of CMSE]"
    "-mexecute-only[disallow generation of data access to code sections]"
    "-mno-movt[disallow use of movt/movw pairs]"
    "-mno-neg-immediates[disallow converting instructions with negative immediates to their negation]"
    "-mnocrc[disallow use of CRC instructions]"
    "-mrestrict-it[disallow generation of deprecated IT blocks for ARMv8]"
    "-mtp=[thread pointer access method]:arg"
    "-munaligned-access[allow memory accesses to be unaligned]"
  )
  ;;

m88k)
  args=(
    -m88000 -m88100 -m88110 -mbig-pic
    -mcheck-zero-division -mhandle-large-shift
    -midentify-revision -mno-check-zero-division
    -mno-ocs-debug-info -mno-ocs-frame-position
    -mno-optimize-arg-area -mno-serialize-volatile
    -mno-underscores -mocs-debug-info
    -mocs-frame-position -moptimize-arg-area
    -mserialize-volatile -msvr3
    -msvr4 -mtrap-large-shift -muse-div-instruction
    -mversion-03.00 -mwarn-passed-structs
    '-mshort-data--:maximum displacement:'
  )
  ;;

rs6000|powerpc*)
  arch=(rios1 rios2 rsc 501 603 604 power powerpc 403 common)
  args=(
    -mpower -mno-power -mpower2 -mno-power2
    -mpowerpc -mno-powerpc
    -mpowerpc-gpopt -mno-powerpc-gpopt
    -mpowerpc-gfxopt -mno-powerpc-gfxopt
    -mnew-mnemonics -mno-new-mnemonics
    -mfull-toc -mminimal-toc -mno-fop-in-toc -mno-sum-in-toc
    -msoft-float -mhard-float -mmultiple -mno-multiple
    -mstring -mno-string -mbit-align -mno-bit-align
    -mstrict-align -mno-strict-align -mrelocatable -mno-relocatable
    -mtoc -mno-toc -mtraceback -mno-traceback
    -mlittle -mlittle-endian -mbig -mbig-endian
    -mcall-aix -mcall-sysv -mprototype
    '-mcpu=:CPU type:->arch'
    "-maltivec[altivec]"
    "-mcmpb[cmpb]"
    "-mcrbits[crbits]"
    "-mcrypto[crypto]"
    "-mdirect-move[direct move]"
    "-mefpu2[efpu2]"
    "-mfloat128[float128]"
    "-mfprnd[fprnd]"
    "-mhtm[htm]"
    "-minvariant-function-descriptors[invariant function descriptors]"
    "-misel[isel]"
    "-mlongcall[longcall]"
    "-mmfocrf[mfocrf]"
    "-mmfcrf[mfcrf]"
    "-mmma[mma]"
    "-mpaired-vector-memops[paired vector memops]"
    "-mpcrel[pcrel]"
    "-mpopcntd[popcntd]"
    "-mpower10-vector[power10 vector]"
    "-mpower8-vector[power8 vector]"
    "-mpower9-vector[power9 vector]"
    "-mrop-protection[rop protection]"
    "-msecure-plt[secure plt]"
    "-mspe[spe]"
    "-mvsx[vsx]"
  )
  ;;

romp)
  args=(
    -mcall-lib-mul -mfp-arg-in-fpregs -mfp-arg-in-gregs
    -mfull-fp-blocks -mhc-struct-return -min-line-mul
    -mminimum-fp-blocks -mnohc-struct-return
  )
  ;;

mips*)
  arch=(r2000 r3000 r4000 r4400 r4600 r6000)
  args=(
    -membedded-pic -mgas -mgp32 -mgp64 -mhalf-pic -mhard-float -mint64 -mips1
    -mips2 -mips3 -mlong64 -mmemcpy -mmips-as -mmips-tfile -mno-abicalls
    -mno-embedded-data -mno-embedded-pic -mno-gpopt -mno-long-calls -mno-memcpy
    -mno-mips-tfile -mno-rnames -mno-stats -mrnames -msoft-float -m4650 -mmad
    -mstats -nocpp
    '-mcpu=:CPU type:->arch'
    "-mabicalls[enable SVR4-style position-independent code]"
    "-mabs=[abs]:arg"
    "-mcheck-zero-division[check zero division]"
    "-mcompact-branches=[compact branches]:arg"
    "-mdouble-float[double float]"
    "-mdsp[dsp]"
    "-mdspr2[dspr2]"
    "-membedded-data[place constants in the .rodata section instead of the .sdata section]"
    "-mextern-sdata[assume that externally defined data is in the small data]"
    "-mfp32[use 32-bit floating point registers]"
    "-mfp64[use 64-bit floating point registers]"
    "-mginv[ginv]"
    "-mgpopt[use GP relative accesses for symbols known to be in a small data section]"
    "-mindirect-jump=[change indirect jump instructions to inhibit speculation]:arg"
    "-mips16[ips16]"
    "-mldc1-sdc1[ldc1 sdc1]"
    "-mlocal-sdata[extend the -G behaviour to object local data]"
    "-mmadd4[enable the generation of 4-operand madd.s, madd.d, etc]"
    "-mmicromips[micromips]"
    "-mmsa[enable MSA ASE]"
    "-mmt[enable MT ASE]"
    "-mnan=[nan]:arg"
    "-mno-mips16[no mips16]"
    "-msingle-float[single float]"
    "-mvirt[virt]"
    "-mxgot[xgot]"
  )
  ;;

i[3456]86|x86_64)
  arch=(
    native i386 i486 i586 pentium pentium-mmx pentiumpro i686 pentium2 pentium3
    pentium3m pentium-m pentium4 pentium4m prescott nocona core2 corei7 corei7-avx
    core-avx-i core-avx2 atom k6 k6-2 k6-3 athlon athlon-tbird athlon-4 athlon-xp
    athlon-mp k8 opteron athlon64 athlon-fx k8-sse3 opteron-sse3 athlon64-sse3
    amdfam10 barcelona bdver1 bdver2 bdver3 btver1 btver2 winchip-c6 winchip2 c3
    c3-2 geode
  )
  args=(
    '-m128bit-long-double[sizeof(long double) is 16]'
    '-m16[generate 16bit i386 code]'
    '-m32[generate 32bit i386 code]'
    '-m3dnowa[support Athlon 3Dnow! built-in functions]'
    '-m3dnow[support 3DNow! built-in functions]'
    '-m64[generate 64bit x86-64 code]'
    '-m80387[use hardware fp]'
    '-m8bit-idiv[expand 32bit/64bit integer divide into 8bit unsigned integer divide with run-time check]'
    '-m96bit-long-double[sizeof(long double) is 12]'
    '-mabi=-[generate code that conforms to the given ABI]:abi:(ms sysv)'
    '-mabm[support code generation of Advanced Bit Manipulation (ABM) instructions]'
    '-maccumulate-outgoing-args[reserve space for outgoing arguments in the function prologue]'
    '-maddress-mode=-[use given address mode]:address mode:(short long)'
    '-madx[support flag-preserving add-carry instructions]'
    '-maes[support AES built-in functions and code generation]'
    '-malign-data=-[use the given data alignment]:type:(compat abi cacheline)'
    '-malign-double[align some doubles on dword boundary]'
    '-malign-functions=-[function starts are aligned to this power of 2]: **2 base for function alignment: '
    '-malign-jumps=-[jump targets are aligned to this power of 2]: **2 base for jump goal alignment: '
    '-malign-loops=-[loop code aligned to this power of 2]: **2 base for loop alignment: '
    '-malign-stringops[align destination of the string operations]'
    "-mamx-bf16[amx bf16]"
    "-mamx-int8[amx int8]"
    "-mamx-tile[amx tile]"
    '-mandroid[generate code for the Android platform]'
    '-march=-[generate instructions for CPU type]:CPU type:->archgeneric'
    '-masm=-[use given assembler dialect]:asm dialect:(att intel)'
    '-mavx256-split-unaligned-load[split 32-byte AVX unaligned load]'
    '-mavx256-split-unaligned-store[split 32-byte AVX unaligned store]'
    '-mavx2[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and AVX2 built-in functions and code generation]'
    '-mavx5124fmaps[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124FMAPS built- in functions and code generation]'
    '-mavx5124vnniw[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX5124VNNIW built- in functions and code generation]'
    "-mavx512bf16[avx512bf16]"
    "-mavx512bitalg[avx512bitalg]"
    '-mavx512bw[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512BW built- in functions and code generation]'
    '-mavx512cd[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512CD built- in functions and code generation]'
    '-mavx512dq[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512DQ built- in functions and code generation]'
    '-mavx512er[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512ER built- in functions and code generation]'
    '-mavx512f[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F built-in functions and code generation]'
    '-mavx512ifma[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512IFMA built-in functions and code generation]'
    '-mavx512pf[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512PF built- in functions and code generation]'
    "-mavx512vbmi2[avx512vbmi2]"
    '-mavx512vbmi[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VBMI built-in functions and code generation]'
    '-mavx512vl[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2 and AVX512F and AVX512VL built- in functions and code generation]'
    "-mavx512vnni[avx512vnni]"
    "-mavx512vp2intersect[avx512vp2intersect]"
    '-mavx512vpopcntdq[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX512F and AVX512VPOPCNTDQ built-in functions and code generation]'
    '-mavx[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2 and AVX built-in functions and code generation]'
    "-mavxvnni[avxvnni]"
    '-mbionic[use Bionic C library]'
    '-mbmi2[support BMI2 built-in functions and code generation]'
    '-mbmi[support BMI built-in functions and code generation]'
    '-mbranch-cost=-[branches are this expensive (1-5, arbitrary units)]:branch cost (1-5): '
    "-mcldemote[cldemote]"
    '-mcld[generate cld instruction in the function prologue]'
    '-mclflushopt[support CLFLUSHOPT instructions]'
    '-mclwb[support CLWB instruction]'
    '-mclzero[support CLZERO built-in functions and code generation]'
    '-mcmodel=-[use given x86-64 code model]:memory model:(32 small kernel medium large)'
    '-mcpu=-[set CPU type]:CPU type:->arch'
    '-mcrc32[support code generation of crc32 instruction]'
    '-mcx16[support code generation of cmpxchg16b instruction]'
    '-mdispatch-scheduler[do dispatch scheduling if processor is bdver1, bdver2, bdver3, bdver4 or znver1 and Haifa scheduling is selected]'
    "-menqcmd[enqcmd]"
    '-mf16c[support F16C built-in functions and code generation]'
    '-mfancy-math-387[generate sin, cos, sqrt for FPU]'
    '-mfentry[emit profiling counter call at function entry before prologue]'
    '-mfma4[support FMA4 built-in functions and code generation]'
    '-mfma[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX and FMA built-in functions and code generation]'
    '-mforce-drap[always use Dynamic Realigned Argument Pointer (DRAP) to realign stack]'
    '-mfpmath=-[generate floating point mathematics using given instruction set]:FPU type:(387 sse sse,387 both)'
    '-mfp-ret-in-387[return values of functions in FPU registers]'
    '-mfsgsbase[support FSGSBASE built-in functions and code generation]'
    '-mfunction-return=-[convert function return to call and return thunk]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mfxsr[support FXSAVE and FXRSTOR instructions]'
    '-mgeneral-regs-only[generate code which uses only the general registers]'
    "-mgfni[gfni]"
    '-mglibc[use GNU C library]'
    '-mhard-float[use hardware fp]'
    '-mhle[support Hardware Lock Elision prefixes]'
    "-mhreset[hreset]"
    '-miamcu[generate code that conforms to Intel MCU psABI]'
    '-mieee-fp[use IEEE math for fp comparisons]'
    '-mincoming-stack-boundary=-[assume incoming stack aligned to this power of 2]:assumed size of boundary: '
    '-mindirect-branch=-[convert indirect call and jump to call and return thunks]:choice:(keep thunk thunk-inline thunk-extern)'
    '-mindirect-branch-register[force indirect call and jump via register]'
    '-minline-all-stringops[inline all known string operations]'
    '-minline-stringops-dynamically[inline memset/memcpy string operations, but perform inline version only for small blocks]'
    "-minvpcid[invpcid]"
    "-mkl[kl]"
    '-mlarge-data-threshold=-[data greater than given threshold will go into .ldata section in x86-64 medium model]:threshold: '
    '-mlong-double-128[use 128-bit long double]'
    '-mlong-double-64[use 64-bit long double]'
    '-mlong-double-80[use 80-bit long double]'
    '-mlwp[support LWP built-in functions and code generation]'
    '-mlzcnt[support LZCNT built-in function and code generation]'
    {'-mmemset-strategy=-','-mmemcpy-strategy=-'}'[specify memcpy expansion strategy when expected size is known]:strategy:'
    '-mmitigate-rop[attempt to avoid generating instruction sequences containing ret bytes]'
    '-mmmx[support MMX built-in functions]'
    '-mmovbe[support code generation of movbe instruction]'
    "-mmovdir64b[movdir64b]"
    "-mmovdiri[movdiri]"
    '-mmpx[support MPX code generation]'
    '-mms-bitfields[use native (MS) bitfield layout]'
    '-mmusl[use musl C library]'
    '-mmwaitx[support MWAITX and MONITORX built-in functions and code generation]'
    '-mno-default[clear all tune features]'
    '-mnop-mcount[generate mcount/__fentry__ calls as nops. To activate they need to be patched in]'
    '-mno-sse4[do not support SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-momit-leaf-frame-pointer[omit the frame pointer in leaf functions]'
    '-mpc32[set 80387 floating-point precision to 32-bit]'
    '-mpc64[set 80387 floating-point precision to 64-bit]'
    '-mpc80[set 80387 floating-point precision to 80-bit]'
    '-mpclmul[support PCLMUL built-in functions and code generation]'
    "-mpconfig[pconfig]"
    '-mpku[support PKU built-in functions and code generation]'
    '-mpopcnt[support code generation of popcnt instruction]'
    '-mprefer-avx128[use 128-bit AVX instructions instead of 256-bit AVX instructions in the auto-vectorizer]'
    '-mpreferred-stack-boundary=-[attempt to keep stack aligned to this power of 2]:size of boundary: '
    '-mprefetchwt1[support PREFETCHWT1 built-in functions and code generation]'
    '-mprfchw[support PREFETCHW instruction]'
    "-mptwrite[ptwrite]"
    '-mpush-args[use push instructions to save outgoing arguments]'
    '-mrdpid[support RDPID built-in functions and code generation]'
    '-mrdrnd[support RDRND built-in functions and code generation]'
    '-mrdseed[support RDSEED instruction]'
    '-mrecip=-[control generation of reciprocal estimates]::instruction:(all none div divf divd rsqrt rsqrtf rsqrtd)' #TODO comma separated and can have !
    '-mrecip[generate reciprocals instead of divss and sqrtss]'
    '-mrecord-mcount[generate __mcount_loc section with all mcount or __fentry__ calls]'
    '-mred-zone[use red-zone in the x86-64 code]'
    '-mreg-alloc=[control the default allocation order of integer registers]:default register allocation order:'
    '-mregparm=-[number of registers used to pass integer arguments]:number of integer argument registers: '
    "-mretpoline-external-thunk[retpoline external thunk]"
    '-mrtd[alternate calling convention]'
    '-mrtm[support RTM built-in functions and code generation]'
    '-msahf[support code generation of sahf instruction in 64bit x86-64 code]'
    "-mserialize[serialize]"
    '-msgx[support SGX built-in functions and code generation]'
    '-msha[support SHA1 and SHA256 built-in functions and code generation]'
    "-mshstk[shstk]"
    '-mskip-rax-setup[skip setting up RAX register when passing variable arguments]'
    '-msoft-float[do not use hardware fp]'
    '-msse2avx[encode SSE instructions with VEX prefix]'
    '-msse2[support MMX, SSE and SSE2 built-in functions and code generation]'
    '-msse3[support MMX, SSE, SSE2 and SSE3 built-in functions and code generation]'
    '-msse4.1[support MMX, SSE, SSE2, SSE3, SSSE3 and SSE4.1 built-in functions and code generation]'
    '-msse4.2[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msse4a[support MMX, SSE, SSE2, SSE3 and SSE4A built-in functions and code generation]'
    '-msse4[support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and SSE4.2 built-in functions and code generation]'
    '-msseregparm[use SSE register passing conventions for SF and DF mode]'
    '-msse[support MMX and SSE built-in functions and code generation]'
    '-mssse3[support MMX, SSE, SSE2, SSE3 and SSSE3 built-in functions and code generation]'
    '-mstack-arg-probe[enable stack probing]'
    '-mstack-protector-guard=-[use given stack-protector guard]:guard:(global tls)'
    '-mstackrealign[realign stack in prologue]'
    '-mstringop-strategy=-[chose strategy to generate stringop using]:stringop strategy:(byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop)'
    '-mstv[disable Scalar to Vector optimization pass transforming 64-bit integer computations into a vector ones]'
    '-mtbm[support TBM built-in functions and code generation]'
    '-mthreads[support thread-safe exception handling on MinGW]'
    '-mtls-dialect=-[use given thread-local storage dialect]:TLS dialect:(gnu gnu2)'
    '-mtls-direct-seg-refs[use direct references against %gs when accessing tls data]'
    "-mtsxldtrk[tsxldtrk]"
    #'-mtune-ctrl=-[fine grain control of tune features]:feature-list:' #for dev use only
    '-mtune=-[tune code for CPU type]:CPU type:->arch'
    '-muclibc[use uClibc C library]'
    "-muintr[uintr]"
    "-mvaes[vaes]"
    '-mveclibabi=-[vector library ABI to use]:vector library ABI:(acml svml)'
    '-mvect8-ret-in-mem[return 8-byte vectors in memory]'
    "-mvpclmulqdq[vpclmulqdq]"
    '-mvzeroupper[generate vzeroupper instruction before a transfer of control flow out of the function]'
    "-mwaitpkg[waitpkg]"
    "-mwbnoinvd[wbnoinvd]"
    "-mwidekl[widekl]"
    '-mx32[generate 32bit x86-64 code]'
    "-mx87[x87]"
    '-mxop[support XOP built-in functions and code generation]'
    '-mxsavec[support XSAVEC instructions]'
    '-mxsaveopt[support XSAVEOPT instruction]'
    '-mxsaves[support XSAVES and XRSTORS instructions]'
    '-mxsave[support XSAVE and XRSTOR instructions]'
  )
  ;;

hppa*)
  args=(
    -mdisable-fpregs -mdisable-indexing -mfast-indirect-calls
    -mgas -mjump-in-delay -mlong-millicode-calls -mno-disable-fpregs
    -mno-disable-indexing -mno-fast-indirect-calls -mno-gas
    -mno-jump-in-delay -mno-millicode-long-calls
    -mno-portable-runtime -mno-soft-float -msoft-float
    -mpa-risc-1-0 -mpa-risc-1-1 -mportable-runtime
    '-mschedule=:code scheduling constraints:(700 7100 7100LC)'
  )
  ;;

i960)
  args=(
    -m{ka,kb,mc,ca,cf,sa,sb}
    -masm-compat -mclean-linkage
    -mcode-align -mcomplex-addr -mleaf-procedures
    -mic-compat -mic2.0-compat -mic3.0-compat
    -mintel-asm -mno-clean-linkage -mno-code-align
    -mno-complex-addr -mno-leaf-procedures
    -mno-old-align -mno-strict-align -mno-tail-call
    -mnumerics -mold-align -msoft-float -mstrict-align
    -mtail-call
  )
  ;;

sparc)
  arch=(
    v7 cypress v8 supersparc sparclite f930 f934 hypersparc sparclite86x sparclet
    tsc701 v9 ultrasparc ultrasparc3
  )
  args=(
    -mapp-regs -mno-app-regs
    -mfpu -mhard-float
    -mno-fpu -msoft-float
    -mhard-quad-float
    -msoft-quad-float
    -mno-unaligned-doubles
    -munaligned-doubles
    -mfaster-structs -mno-faster-structs
    -mimpure-text
    '-mcpu=:CPU type:->arch'
    '-mtune=:CPU type:->arch'
    -mv8plus -mno-v8plus
    -mvis -mno-vis
    -mlittle-endian
    -m32 -m64
    '-mcmodel=:memory model:(medlow medmid medany embmedany)'
    -mstack-bias -mno-stack-bias
    -mv8
    -mcypress -mepilogue -mflat
    -mno-flat
    -mno-epilogue
    -msparclite -msupersparc
    -mmedlow -mmedany
    -mint32 -mint64 -mlong32 -mlong64
  )
  ;;

alpha*)
  args=(
    -mfp-regs -mno-fp-regs -mno-soft-float
    -msoft-float
  )
  ;;

clipper)
  args=(
    -mc300 -mc400
  )
  ;;

h8/300)
  args=(
    -mrelax -mh
  )
  ;;

aarch64)
  args=(
    "-mmark-bti-property[add .note.gnu.property with BTI to assembly files]"
    "-moutline[enable function outlining (AArch64 only)]"
    "-msve-vector-bits=[specify the size in bits of an SVE vector register]:bits"
  )
  ;;

amdgpu)
  args=(
    "-mcumode[specify CU wavefront execution mode]"
    "-mtgsplit[enable threadgroup split execution mode (AMDGPU only)]"
  )
  ;;

hexagon)
  args=(
    "-mieee-rnd-near[ieee rnd near]"
    "-mmemops[enable generation of memop instructions]"
    "-mnvj[enable generation of new-value jumps]"
    "-mnvs[enable generation of new-value stores]"
    "-mpackets[enable generation of instruction packets]"
    "-mhvx[enable Hexagon Vector eXtensions]"
    "-mhvx-length=[set Hexagon Vector Length]:arg"
    "-mhvx=[enable Hexagon Vector eXtensions]:arg"
  )
  ;;

webassembly*)
  args=(
    "-matomics[atomics]"
    "-mbulk-memory[bulk memory]"
    "-mexception-handling[exception handling]"
    "-mmultivalue[multivalue]"
    "-mmutable-globals[mutable globals]"
    "-mnontrapping-fptoint[no ntrapping fptoint]"
    "-mreference-types[reference types]"
    "-msign-ext[sign ext]"
    "-msimd128[simd128]"
    "-mtail-call[tail call]"
    "-munimplemented-simd128[unimplemented simd128]"
    "-mexec-model=[execution model]:arg"
  )
  ;;

riscv)
  args=(
    "-msave-restore[enable using library calls for save and restore]"
  )
  ;;
esac

if [[ "$service" = clang* ]]; then
  args+=(
    "-all_load[undocumented option]"
    "-allowable_client[undocumented option]:argument"
    "--analyzer-no-default-checks[analyzer does no default checks]"
    "--analyzer-output[static analyzer report output format]:format:(html plist plist-multi-file plist-html sarif sarif-html text)"
    "--analyze[run the static analyzer]"
    "-arch[arch]:argument"
    "-arch_errors_fatal[arch errors fatal]"
    "-arch_only[arch only]:argument"
    "-arcmt-migrate-emit-errors[emit ARC errors even if the migrator can fix them]"
    "-arcmt-migrate-report-output[output path for the plist report]:file:_files"
    "-a-[undocumented option]:argument"
    "--autocomplete=[autocomplete]:argument"
    "-bind_at_load[bind at load]"
    "--bootclasspath=[bootclasspath]:arg"
    "-bundle[bundle]"
    "-bundle_loader[bundle loader]:argument"
    "--CLASSPATH=[CLASSPATH]:arg"
    "--classpath=[classpath]:arg"
    "-cl-denorms-are-zero[allow denormals to be flushed to zero]"
    "-cl-fast-relaxed-math[cl fast relaxed math]"
    "-cl-finite-math-only[allow floating-point optimizations]"
    "-cl-fp32-correctly-rounded-divide-sqrt[specify that divide and sqrt are correctly rounded]"
    "-client_name[client name]:argument"
    "-cl-kernel-arg-info[generate kernel argument metadata]"
    "-cl-mad-enable[allow use of less precise MAD computations]"
    "-cl-no-signed-zeros[allow use of no signed zeros computations]"
    "-cl-no-stdinc[disables all standard includes]"
    "-cl-opt-disable[disables all optimizations]"
    "-cl-single-precision-constant[treat double float constant as single precision]"
    "-cl-std=[openCL language standard to compile for]:arg"
    "-cl-strict-aliasing[this option is added for compatibility with OpenCL 1.0]"
    "-cl-uniform-work-group-size[defines that the global work-size be uniform]"
    "-cl-unsafe-math-optimizations[allow unsafe floating-point optimizations]"
    "-compatibility_version[compatibility version]:compatibility version"
    "--config[specifies configuration file]:configuration file:_files"
    "--constant-cfstrings[use constant cfstrings]"
    "--coverage[coverage]"
    "-coverage[coverage]"
    "-cpp[cpp]"
    "--cuda-compile-host-device[compile CUDA code for both host and device]"
    "--cuda-device-only[compile CUDA code for device only]"
    "--cuda-gpu-arch=[cUDA offloading device architecture]:arg"
    "--cuda-host-only[compile CUDA code for host only]"
    "*--cuda-include-ptx=[include ptx for the following gpu architecture]:argument"
    "--cuda-noopt-device-debug[enable device-side debug info generation]"
    "--cuda-path=[cUDA installation path]:arg"
    "--cuda-path-ignore-env[ignore environment variables to detect CUDA installation]"
    "-cuid=[an id for compilation unit]:argument"
    "-current_version[current version]:current version"
    "-cxx-isystem[add directory to the C++ SYSTEM include search path]:directory:_files -/"
    "-dead_strip[dead strip]"
    "-dependency-dot[file to write dot-formatted header dependencies to]:file:_files"
    "-dependency-file[file to write dependency output to]:file:_files"
    "--dyld-prefix=[dyld prefix]:prefix"
    "--dylib_file[dyld file]:file:_files"
    "-dylinker[dylinker]"
    "-dylinker_install_name[dylinker install name]:name"
    "-dynamic[dynamic]"
    "-dynamiclib[dynamic lib]"
    "-EB[big endian]"
    "-EL[little endian]"
    "-emit-ast[emit Clang AST files for source inputs]"
    "-emit-interface-stubs[generate Interface Stub Files]"
    "-emit-llvm[use the LLVM representation for assembler and object files]"
    "-emit-merged-ifs[generate Interface Stub Files, emit merged text not binary]"
    "--emit-static-lib[enable linker job to emit a static library]"
    #"-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang[trivial automatic variable initialization to zero is only here for benchmarks]"
    "--encoding=[encoding]:arg"
    "-exported_symbols_list[exported symbols list]:argument"
    "--extdirs=[extdirs]:arg"
    "--extra-warnings[enable extra warnings]"
    "-faccess-control[access control]"
    "*-F+[add directory to framework search path]:framework directory:_files -/"
    "-faddrsig[emit an address-significance table]"
    "-faggressive-function-elimination[aggressive function elimination]"
    "-falign-commons[align commons]"
    "-faligned-allocation[aligned allocation]"
    "-faligned-new[enable C++17 aligned allocation functions]"
    "-fall-intrinsics[all intrinsics]"
    "-fallow-editor-placeholders[treat editor placeholders as valid source code]"
    "-fallow-unsupported[allow unsupported]"
    "-falternative-parameter-statement[enable the old style PARAMETER statement]"
    "-faltivec[altivec]"
    "-fansi-escape-codes[use ANSI escape codes for diagnostics]"
    "-fapple-kext[use Apple's kernel extensions ABI]"
    "-fapple-link-rtlib[force linking the clang builtins runtime library]"
    "-fapple-pragma-pack[enable Apple GCC-compatible #pragma pack handling]"
    "-fapplication-extension[restrict code to those available for App Extensions]"
    "-fasm-blocks[asm blocks]"
    "-fassume-sane-operator-new[assume sane operator new]"
    "-fast[ast]"
    "-fastcp[astcp]"
    "-fastf[astf]"
    "-fautolink[autolink]"
    "-fautomatic[automatic]"
    "-fauto-profile-accurate[auto profile accurate]"
    "-fauto-profile=[enable sample-based profile guided optimizations]::arg"
    "-fbackslash[change the interpretation of backslashes in string literals]"
    "-fbacktrace[backtrace]"
    "-fbasic-block-sections=[generate labels for each basic block]:arg"
    "-fbinutils-version=[produced object files can use all ELF features supported by this version]:major.minor"
    "-fblas-matmul-limit=[blas matmul limit]:arg"
    "-fblocks[enable the blocks language feature]"
    "-fbootclasspath=[bootclasspath]:arg"
    "-fborland-extensions[accept non-standard constructs supported by the Borland compiler]"
    "-fbracket-depth=[bracket depth]:arg"
    "-fbuild-session-file=[use the last modification time of <file> as the build session timestamp]:file:_files"
    "-fbuild-session-timestamp=[time when the current build session started]:time since Epoch in seconds"
    "-fbuiltin-module-map[load the clang builtins module map file]"
    "-fcaret-diagnostics[show diagnostic messages using a caret]"
    "-fcf-protection=[instrument control-flow architecture protection]::arg (options\: return, branch, full, none)"
    "-fcf-runtime-abi=[cf runtime abi]:arg"
    "-fchar8_t[enable C++ builtin type char8_t]"
    "-fcheck-array-temporaries[check array temporaries]"
    "-fcheck=[check]:arg"
    "-fclang-abi-compat=[attempt to match the ABI of Clang <version>]:version"
    "-fclasspath=[classpath]:arg"
    "-fcoarray=[coarray]:arg"
    "-fcolor-diagnostics[enable colors in diagnostics]"
    "-fcomment-block-commands=[treat each comma separated argument in <arg> as a documentation comment block command]:arg"
    "-fcompile-resource=[compile resource]:arg"
    "-fcomplete-member-pointers[require member pointer base types to be complete if they would be significant under the Microsoft ABI]"
    "-fconstant-cfstrings[constant cfstrings]"
    "-fconstant-string-class=[constant string class]:arg"
    "-fconstexpr-backtrace-limit=[constexpr backtrace limit]:arg"
    "-fconstexpr-depth=[constexpr depth]:arg"
    "-fconstexpr-steps=[constexpr steps]:arg"
    "-fconvergent-functions[assume functions may be convergent]"
    "-fconvert=[convert]:arg"
    "-fcoroutines-ts[enable support for the C++ Coroutines TS]"
    "-fcoverage-compilation-dir=[the compilation directory to embed in the coverage mapping]:arg"
    "-fcoverage-mapping[generate coverage mapping to enable code coverage analysis]"
    "-fcoverage-prefix-map=[remap file source paths in coverage mapping]:arg"
    "-fcrash-diagnostics-dir=[crash diagnostics dir]:arg"
    "-fcray-pointer[cray pointer]"
    "-fcreate-profile[create profile]"
    "-fcs-profile-generate[generate instrumented code to collect context sensitive execution counts]"
    "-fcs-profile-generate=[generate instrumented code to collect context sensitive execution counts]:directory:_files -/"
    "-fc\+\+-static-destructors[c++ static destructors]"
    "-fcuda-approx-transcendentals[use approximate transcendental functions]"
    "-fcuda-flush-denormals-to-zero[flush denormal floating point values to zero in CUDA device mode]"
    "-fcuda-rdc[cuda rdc]"
    "-fcuda-short-ptr[use 32-bit pointers for accessing const/local/shared address spaces]"
    "-fcxx-exceptions[enable C++ exceptions]"
    "-fcxx-modules[cxx modules]"
    "-fdebug-compilation-dir=[the compilation directory to embed in the debug info]:arg"
    "-fdebug-default-version=[default DWARF version to use]:arg"
    "-fdebug-dump-parse-tree[dump the parse tree]"
    "-fdebug-dump-provenance[dump provenance]"
    "-fdebug-dump-symbols[dump symbols after the semantic analysis]"
    "-fdebug-info-for-profiling[emit extra debug info to make sample profile more accurate]"
    "-fdebug-macro[emit macro debug information]"
    "-fdebug-measure-parse-tree[measure the parse tree]"
    "-fdebug-pass-arguments[debug pass arguments]"
    "-fdebug-pass-structure[debug pass structure]"
    "-fdebug-pre-fir-tree[dump the pre-FIR tree]"
    "-fdebug-ranges-base-address[use DWARF base address selection entries in .debug_ranges]"
    "-fdebug-unparse[unparse and stop]"
    "-fdebug-unparse-with-symbols[unparse and stop]"
    "-fdeclspec[allow __declspec as a keyword]"
    "-fdefault-double-8[set the default double precision kind to an 8 byte wide type]"
    "-fdefault-integer-8[set the default integer kind to an 8 byte wide type]"
    "-fdefault-real-8[set the default real kind to an 8 byte wide type]"
    "-fdelayed-template-parsing[parse templated function definitions at the end of the translation unit]"
    "-fdenormal-fp-math=[denormal fp math]:arg"
    "-fdepfile-entry=[depfile entry]:arg"
    "-fdiagnostics-absolute-paths[print absolute paths in diagnostics]"
    "-fdiagnostics-fixit-info[supply fixit into with diagnostic messages]"
    "-fdiagnostics-format=[diagnostics format]:arg"
    "-fdiagnostics-hotness-threshold=[prevent optimization remarks from being output if they do not meet threshold]:value"
    "-fdiagnostics-parseable-fixits[print fixits in a machine parseable form]"
    "-fdiagnostics-print-source-range-info[print source range spans in numeric form]"
    "-fdiagnostics-show-category=[diagnostics show category]:arg"
    "-fdiagnostics-show-hotness[enable profile hotness information in diagnostic line]"
    "-fdiagnostics-show-note-include-stack[display include stacks for diagnostic notes]"
    "-fdiagnostics-show-option[enable -Woption information in diagnostic line]"
    "-fdiagnostics-show-template-tree[print a template comparison tree for differing templates]"
    "-fdigraphs[enable alternative token representations]"
    "-fdirect-access-external-data[don't use GOT indirection to reference external data symbols]"
    "-fdiscard-value-names[discard value names in LLVM IR]"
    "-fd-lines-as-code[d lines as code]"
    "-fd-lines-as-comments[d lines as comments]"
    "-fdollar-ok[dollar ok]"
    "-fdouble-square-bracket-attributes[enable double square bracket attributes]"
    "-fdump-fortran-optimized[dump fortran optimized]"
    "-fdump-fortran-original[dump fortran original]"
    "-fdump-parse-tree[dump parse tree]"
    "-fdwarf-directory-asm[DWARF directory asm]"
    "-fdwarf-exceptions[use DWARF style exceptions]"
    "-felide-constructors[elide constructors]"
    "-felide-type[elide types when printing diagnostics]"
    "-fembed-bitcode=[embed LLVM bitcode (option: off, all, bitcode, marker)]:option"
    "-fembed-bitcode[equivalent to -fembed-bitcode=all]"
    "-fembed-bitcode-marker[equivalent to -fembed-bitcode=marker]"
    "-femit-all-decls[emit all declarations]"
    "-femulated-tls[use emutls functions to access thread_local variables]"
    "-fenable-matrix[enable matrix data type and related builtin functions]"
    "-fencoding=[encoding]:arg"
    "-ferror-limit=[error limit]:arg"
    "-fescaping-block-tail-calls[escaping block tail calls]"
    "-fexperimental-isel[experimental isel]"
    "-fexperimental-new-constant-interpreter[enable the experimental new constant interpreter]"
    "-fexperimental-relative-c\+\+-abi-vtables[use the experimental C++ class ABI for classes with vtables]"
    "-fexperimental-strict-floating-point[enables experimental strict floating point in LLVM]"
    "-fextdirs=[extdirs]:arg"
    "-fexternal-blas[external blas]"
    "-ff2c[f2c]"
    "-ffile-compilation-dir=[the compilation directory to embed in the debug info]:arg"
    "-ffile-prefix-map=[remap file source paths in debug info and predefined preprocessor macros]:arg"
    "-ffine-grained-bitfield-accesses[use separate accesses for consecutive bitfield runs with legal widths and alignments]"
    "-ffinite-loops[assume all loops are finite]"
    "-ffixed-form[process source files in fixed form]"
    "-ffixed-line-length=[set column after which characters are ignored]:arg"
    "-ffixed-point[enable fixed point types]"
    "-fforce-dwarf-frame[always emit a debug frame section]"
    "-fforce-emit-vtables[emits more virtual tables to improve devirtualization]"
    "-fforce-enable-int128[enable support for int128_t type]"
    "-ffor-scope[for scope]"
    "-ffpe-trap=[fpe trap]:arg"
    "-ffp-exception-behavior=[specifies the exception behavior of floating-point operations]:arg"
    "-ffp-model=[controls the semantics of floating-point calculations]:arg"
    "-ffree-form[process source files in free form]"
    "-ffree-line-length-[free line length]:arg"
    "-ffrontend-optimize[frontend optimize]"
    "-fglobal-isel[enables the global instruction selector]"
    "-fgnuc-version=[sets various macros to claim compatibility with the given GCC version]:version"
    "-fgnu-inline-asm[gnu inline asm]"
    "-fgnu-keywords[allow GNU-extension keywords regardless of language standard]"
    "-fgnu-runtime[generate output compatible with the standard GNU Objective-C runtime]"
    "-fgpu-allow-device-init[allow device side init function in HIP]"
    "-fgpu-defer-diag[defer host/device related diagnostic messages for CUDA/HIP]"
    "-fgpu-rdc[generate relocatable device code, also known as separate compilation mode]"
    "-fgpu-sanitize[enable sanitizer for AMDGPU target]"
    "-fheinous-gnu-extensions[heinous GNU extensions]"
    "-fhip-new-launch-api,[-fno-hip-new-launch-api Use new kernel launching API for HIP]"
    "-fhonor-infinites[honor infinites]"
    "-fhonor-infinities[honor infinities]"
    "-fhonor-nans[honor nans]"
    "-fignore-exceptions[enable support for ignoring exception handling constructs]"
    "-filelist[ilelist]:arg"
    "-fimplicit-module-maps[implicit module maps]"
    "-fimplicit-modules[implicit modules]"
    "-fimplicit-none[no implicit typing allowed unless overridden by IMPLICIT statements]"
    "-findirect-virtual-calls[indirect virtual calls]"
    "-finit-character=[init character]:arg"
    "-finit-integer=[init integer]:arg"
    "-finit-local-zero[init local zero]"
    "-finit-logical=[init logical]:arg"
    "-finit-real=[init real]:arg"
    "-finline-hint-functions[inline functions which are (explicitly or implicitly) marked inline]"
    "-finstrument-function-entry-bare[instrument function entry only]"
    "-finstrument-functions-after-inlining[insert the calls after inlining]"
    "-finteger-4-integer-8[integer 4 integer 8]"
    "-fintegrated-as[enable the integrated assembler]"
    "-fintegrated-cc1[run cc1 in-process]"
    "-fintrinsic-modules-path[intrinsic modules path]"
    "-flarge-sizes[use INTEGER(KIND=8) for the result type in size-related intrinsics]"
    "-flat_namespace[flat namespace]"
    "-flegacy-pass-manager[use the legacy pass manager in LLVM]"
    "-flimited-precision=[limited precision]:arg"
    "-flogical-abbreviations[enable logical abbreviations]"
    "-flto=-[generate output files suitable for link time optimization]::style:(full thin)"
    "-flto-jobs=[controls the backend parallelism]:arg"
    "-fmacro-backtrace-limit=[macro backtrace limit]:limit"
    "-fmacro-prefix-map=[remap file source paths in predefined preprocessor macros]:arg"
    "-fmax-array-constructor=[max array constructor]:arg"
    "-fmax-identifier-length[max identifier length]"
    "-fmax-stack-var-size=[max stack var size]:arg"
    "-fmax-subrecord-length=[max subrecord length]:arg"
    "-fmax-tokens=[max total number of preprocessed tokens for -Wmax-tokens]:number"
    "-fmax-type-align=[specify the maximum alignment to enforce on pointers lacking an explicit alignment]:arg"
    "-fmemory-profile=[enable heap memory profiling and dump results into <directory>]::directory:_files -/"
    "-fmodule-file-deps[module file deps]"
    "-fmodule-file=[specify the mapping of module name to precompiled module file]:file:_files"
    "-fmodule-implementation-of[module implementation of]:name"
    "-fmodule-map-file=[load this module map file]:file:_files"
    "-fmodule-maps[implicitly search the file system for module map files.]"
    "-fmodule-name=[specify the name of the module to build]:name"
    "-fmodule-private[module private]"
    "-fmodules-cache-path=[specify the module cache path]:directory:_files -/"
    "-fmodules-decluse[require declaration of modules used within a module]"
    "-fmodules-disable-diagnostic-validation[disable validation of the diagnostic options when loading the module]"
    "-fmodules[enable the modules language feature]"
    "-fmodules-ignore-macro=[ignore the definition of the given macro when building and loading modules]:macro"
    "-fmodules-prune-after=[specify the interval after which a module file will be considered unused]:seconds"
    "-fmodules-prune-interval=[specify the interval between attempts to prune the module cache]:seconds"
    "-fmodules-search-all[search even non-imported modules to resolve references]"
    "-fmodules-strict-decluse[requires all headers to be in modules]"
    "-fmodules-ts[enable support for the C++ Modules TS]"
    "-fmodules-user-build-path[specify the module user build path]:directory:_files -/"
    "-fmodules-validate-input-files-content[validate PCM input files based on content if mtime differs]"
    "-fmodules-validate-once-per-build-session[don't verify input files for the modules]"
    "-fmodules-validate-system-headers[validate the system headers that a module depends on when loading the module]"
    "-fms-compatibility[enable full Microsoft Visual C++ compatibility]"
    "-fms-compatibility-version=[microsoft compiler version number]:arg"
    "-fmsc-version=[microsoft compiler version number to report]:arg"
    "-fms-memptr-rep=[ms memptr rep]:arg"
    "-fms-volatile[ms volatile]"
    "-fnested-functions[nested functions]"
    "-fnew-alignment=[specifies the largest alignment guaranteed]:align"
    "-fnext-runtime[next runtime]"
    "-fno-builtin-[disable implicit builtin knowledge of a specific function]:arg"
    "-fno-crash-diagnostics[disable auto-generation of preprocessed source files and a script for reproduction during a clang crash]"
    "-fno-limit-debug-info[no limit debug info]"
    "-fno-max-type-align[no max type align]"
    "-fno_modules-validate-input-files-content[no modules validate input files content]"
    "-fno_pch-validate-input-files-content[no pch validate input files content]"
    "-fno-strict-modules-decluse[no strict modules decluse]"
    "-fno-temp-file[directly create compilation output files]"
    "-fno-working-directory[no working directory]"
    "-fnoxray-link-deps[no xray link deps]"
    "-fobjc-abi-version=-[set Objective-C ABI version]:version"
    "-fobjc-arc-exceptions[use EH-safe code when synthesizing retains and releases in -fobjc-arc]"
    "-fobjc-arc[synthesize retain and release calls for Objective-C pointers]"
    "-fobjc-convert-messages-to-runtime-calls[convert messages to runtime calls]"
    "-fobjc-encode-cxx-class-template-spec[fully encode C++ class template specialization]"
    "-fobjc-exceptions[enable Objective-C exceptions]"
    "-fobjc-infer-related-result-type[infer related result type]"
    "-fobjc-legacy-dispatch[use legacy dispatch]"
    "-fobjc-link-runtime[set link runtime]"
    "-fobjc-nonfragile-abi[set nonfragile abi]"
    "-fobjc-nonfragile-abi-version=-[set nonfragile abi version]:version"
    "-fobjc-runtime=-[specify the target Objective-C runtime kind and version]:runtime"
    "-fobjc-sender-dependent-dispatch[set sender dependent dispatch]"
    "-fobjc-weak[enable ARC-style weak references in Objective-C]"
    "-fopenmp-targets=[specify comma-separated list of triples OpenMP offloading targets to be supported]:targets"
    "-fopenmp-version=[openmp version]:version"
    "-foperator-arrow-depth=[operator arrow depth]:arg"
    "-foperator-names[treat C++ operator name keywords as synonyms for operators]"
    "-foptimization-record-file=[specify the output name of the file containing the optimization remarks]:file:_files"
    "-foptimization-record-passes=[only include passes which match a specified regex]:regex"
    "-force_cpusubtype_ALL[force cpusubtype all]"
    "-force_flat_namespace[force flat namespace]"
    "--force-link=[force link]:arg"
    "-force_load[force load]:argument"
    "-forder-file-instrumentation[generate instrumented code to collect order file]"
    "-foutput-class-dir=[output class dir]:arg"
    "-fpack-derived[pack derived]"
    "-fparse-all-comments[parse all comments]"
    "-fpascal-strings[recognize and construct Pascal-style string literals]"
    "-fpass-plugin=[load pass plugin from a dynamic shared object file]:dsopath"
    "-fpatchable-function-entry=[generate NOPs around function entry]:N,M"
    "-fpch-codegen[generate code for uses of this PCH]"
    "-fpch-debuginfo[generate debug info for types in an object file built from this PCH]"
    "-fpch-instantiate-templates[instantiate templates already while building a PCH]"
    "-fpch-validate-input-files-content[validate PCH input files based on content]"
    "-fprebuilt-implicit-modules[look up implicit modules]"
    "-fprebuilt-module-path=[specify the prebuilt module path]:directory:_files -/"
    "-fpreserve-as-comments[preserve as comments]"
    "-fproc-stat-report=[save subprocess statistics to the given file]:arg"
    "-fprofile-exclude-files=[exclude files from profile]:arg"
    "-fprofile-filter-files=[filter files for profile]:arg"
    "-fprofile-instr-generate=[generate instrumented profile into file]::file:_files"
    "-fprofile-instr-use=[use instrumentation data for profile-guided optimization]::arg"
    "-fprofile-list=[filename defining the list of items to instrument]:file:_files"
    "-fprofile-remapping-file=[use the remappings described in file in profile]:file:_files"
    "-fprofile-sample-accurate[specifies that the sample profile is accurate]"
    "-fprofile-sample-use=[profile sample use]::arg"
    "-fprofile-update=[set update method of profile counters]:method"
    "-fprotect-parens[protect parens]"
    "-fpseudo-probe-for-profiling[emit pseudo probes for sample profiling]"
    "*-framework[include framework found in search path]:framework:->framework"
    "-frange-check[range check]"
    "-freal-4-real-10[real 4 real 10]"
    "-freal-4-real-16[real 4 real 16]"
    "-freal-4-real-8[real 4 real 8]"
    "-freal-8-real-10[real 8 real 10]"
    "-freal-8-real-16[real 8 real 16]"
    "-freal-8-real-4[real 8 real 4]"
    "-frealloc-lhs[realloc lhs]"
    "-frecord-command-line[record command line]"
    "-frecord-marker=[record marker]:arg"
    "-frecursive[recursive]"
    "-fregister-global-dtors-with-atexit[use atexit to register global destructors]"
    "-frelaxed-template-template-args[enable C++17 relaxed template template argument matching]"
    "-frepack-arrays[repack arrays]"
    "-freroll-loops[turn on loop reroller]"
    "-fretain-comments-from-system-headers[retain comments from system headers]"
    "-frewrite-imports[rewrite imports]"
    "-frewrite-includes[rewrite includes]"
    "-frewrite-map-file=[rewrite map file]:arg"
    "-fropi[generate read-only position independent code (ARM only)]"
    "-frtlib-add-rpath[add -rpath with architecture-specific resource directory to the linker flags]"
    "-frtti-data[rtti data]"
    "-frwpi[generate read-write position independent code (ARM only)]"
    "-fsanitize-address-destructor-kind=[set destructor type used in ASan instrumentation]:kind"
    "-fsanitize-address-field-padding=[level of field padding for AddressSanitizer]:arg"
    "-fsanitize-address-globals-dead-stripping[enable linker dead stripping of globals in AddressSanitizer]"
    "-fsanitize-address-poison-custom-array-cookie[enable poisoning array cookies when using custom operator new in AddressSanitizer]"
    "-fsanitize-address-use-after-scope[enable use-after-scope detection in AddressSanitizer]"
    "-fsanitize-address-use-odr-indicator[enable ODR indicator globals]"
    "-fsanitize-blacklist=[path to blacklist file for sanitizers]:arg"
    "-fsanitize-cfi-canonical-jump-tables[make the jump table addresses canonical in the symbol table]"
    "-fsanitize-cfi-cross-dso[enable control flow integrity (CFI) checks for cross-DSO calls]"
    "-fsanitize-cfi-icall-generalize-pointers[generalize pointers in CFI indirect call type signature checks]"
    "-fsanitize-coverage-allowlist=[sanitize coverage allowlist]:arg"
    "-fsanitize-coverage-blacklist=[disable sanitizer coverage instrumentation]:arg"
    "-fsanitize-coverage-blocklist=[sanitize coverage blocklist]:arg"
    "-fsanitize-coverage=[specify the type of coverage instrumentation for Sanitizers]:arg"
    "-fsanitize-coverage-whitelist=[restrict sanitizer coverage instrumentation]:arg"
    "-fsanitize-hwaddress-abi=[select the HWAddressSanitizer ABI to target]:arg"
    "-fsanitize-link-c\+\+-runtime[sanitize link c++ runtime]"
    "-fsanitize-link-runtime[sanitize link runtime]"
    "-fsanitize-memory-track-origins=[enable origins tracking in MemorySanitizer]::arg"
    "-fsanitize-memory-use-after-dtor[enable use-after-destroy detection in MemorySanitizer]"
    "-fsanitize-minimal-runtime[sanitize minimal runtime]"
    "-fsanitize-recover=[enable recovery for specified sanitizers]::arg"
    "-fsanitize-stats[enable sanitizer statistics gathering]"
    "-fsanitize-system-blacklist[path to system blacklist file for sanitizers]:file:_files"
    "-fsanitize-thread-atomics[enable atomic operations instrumentation in ThreadSanitizer (default)]"
    "-fsanitize-thread-func-entry-exit[enable function entry/exit instrumentation in ThreadSanitizer]"
    "-fsanitize-thread-memory-access[enable memory access instrumentation in ThreadSanitizer]"
    "-fsanitize-trap=[enable trapping for specified sanitizers]::arg"
    "-fsanitize-undefined-strip-path-components=[strip a given number of path components when emitting check metadata]:number"
    "-fsanitize-undefined-trap-on-error[equivalent to -fsanitize-trap=undefined]"
    "-fsave-optimization-record=[generate an optimization record file in a specific format]::format"
    "-fsecond-underscore[second underscore]"
    "-fseh-exceptions[use SEH style exceptions]"
    "-fsemantic-interposition[semantic interposition]"
    "-fshow-column[show the column]"
    "-fshow-overloads=[which overload candidates to show when overload resolution fails]:arg"
    "-fshow-source-location[show source location]"
    "-fsignaling-math[signaling math]"
    "-fsign-zero[sign zero]"
    "-fsized-deallocation[enable C++14 sized global deallocation functions]"
    "-fsjlj-exceptions[use SjLj style exceptions]"
    "-fslp-vectorize[enable the superword-level parallelism vectorization passes]"
    "-fspell-checking-limit=[spell checking limit]:arg"
    "-fspell-checking[spell checking]"
    "-fsplit-dwarf-inlining[provide minimal debug info in the object]"
    "-fsplit-lto-unit[enables splitting of the LTO unit]"
    "-fsplit-machine-functions[enable late function splitting using profile information]"
    "-fstack-arrays[stack arrays]"
    "-fstack-clash-protection[enable stack clash protection]"
    "-fstack-size-section[emit section containing metadata on function stack sizes]"
    "-fstandalone-debug[emit full debug info for all types used by the program]"
    "-fstrict-float-cast-overflow[assume that overflowing float-to-int casts are undefined]"
    "-fstrict-return[strict return]"
    "-fstrict-vtable-pointers[enable optimizations based on the strict vtables]"
    "-fstruct-path-tbaa[struct path tbaa]"
    "-fsycl[enable SYCL kernels compilation for device]"
    "-fsymbol-partition=[symbol partition]:arg"
    "-fsystem-module[build this module as a system module. only used with -emit-module]"
    "-ftemplate-backtrace-limit=[template backtrace limit]:arg"
    "-ftemplate-depth--[template depth]:arg"
    "-ftemplate-depth=[template depth]:arg"
    "-fterminated-vtables[terminated vtables]"
    "-fthin-link-bitcode=[write minimized bitcode to <file>]:file:_files"
    "-fthinlto-index=[perform ThinLTO importing using provided index]:arg"
    "-fthreadsafe-statics[threadsafe statics]"
    "-ftime-trace-granularity=[minimum time granularity traced by time profiler]:microseconds"
    "-ftime-trace[turn on time profiler]"
    "-ftrap-function=[issue call to specified function rather than a trap instruction]:function name"
    "-ftrapv-handler=[specify the function to be called on overflow]:function name"
    "-ftrigraphs[process trigraph sequences]"
    "-ftrivial-auto-var-init=[initialize trivial automatic stack variables]:arg"
    "-ftrivial-auto-var-init-stop-after=[stop initializing trivial automatic stack variables after the specified number of instances]:arg"
    "-funderscoring[underscoring]"
    "-funique-basic-block-section-names[use unique names for basic block sections]"
    "-funique-internal-linkage-names[uniqueify Internal Linkage Symbol Names]"
    "-funique-section-names[unique section names]"
    "-funit-at-a-time[unit at a time]"
    "-fuse-cuid=[method to generate ids for compilation units for single source offloading languages CUDA and HIP]:argument"
    "-fuse-cxa-atexit[use cxa atexit]"
    "-fuse-init-array[use init array]"
    "-fuse-line-directives[use #line in preprocessed output]"
    "-fvalidate-ast-input-files-content[compute and store the hash of input files used to build an AST]"
    "-fveclib=[use the given vector functions library]:arg"
    "-fvectorize[enable the loop vectorization passes]"
    "-fvirtual-function-elimination[enables dead virtual function elimination optimization]"
    "-fvisibility-dllexport=[the visibility for dllexport defintions]:arg"
    "-fvisibility-externs-dllimport=[the visibility for dllimport external declarations]:arg"
    "-fvisibility-externs-nodllstorageclass=[the visibility for external declarations without an explicit DLL dllstorageclass]:arg"
    "-fvisibility-from-dllstorageclass[set the visiblity of symbols in the generated code from their DLL storage class]"
    "-fvisibility-global-new-delete-hidden[give global C++ operator new and delete declarations hidden visibility]"
    "-fvisibility-inlines-hidden[give inline C++ member functions hidden visibility by default]"
    "-fvisibility-inlines-hidden-static-local-var[visibility inlines hidden static local var]"
    "-fvisibility-ms-compat[give global types and functions a specific visibility]"
    "-fvisibility-nodllstorageclass=[the visibility for defintiions without an explicit DLL export class]:arg"
    "-fwasm-exceptions[use WebAssembly style exceptions]"
    "-fwhole-file[whole file]"
    "-fwhole-program-vtables[enables whole-program vtable optimization]"
    "-fwritable-strings[store string literals as writable data]"
    "-fxl-pragma-pack[enable IBM XL #pragma pack handling]"
    "-fxor-operator[enable .XOR. as a synonym of .NEQV.]"
    "-fxray-always-emit-customevents[always emit xray customevent calls]"
    "-fxray-always-emit-typedevents[always emit xray typedevents calls]"
    "-fxray-always-instrument=[file defining xray always instrument]:file:_files"
    "-fxray-attr-list=[file defining the list of xray attributes]:file:_files"
    "-fxray-function-groups=[only instrument 1 of N groups]:arg"
    "-fxray-function-index[xray function index]"
    "-fxray-ignore-loops[don't instrument functions with loops unless they also meet the minimum function size]"
    "-fxray-instruction-threshold=[sets the minimum function size to instrument with XRay]:arg"
    "-fxray-instrumentation-bundle=[select which XRay instrumentation points to emit]:arg"
    "-fxray-instrument[generate XRay instrumentation sleds on function entry and exit]"
    "-fxray-link-deps[tells clang to add the link dependencies for XRay]"
    "-fxray-modes=[list of modes to link in by default into XRay instrumented binaries]:arg"
    "-fxray-never-instrument=[file defining the whitelist for Xray attributes]:file:_files"
    "-fxray-selected-function-group=[select which group of functions to instrument]:arg"
    "-fzvector[enable System z vector language extension]"
    {-gcc-toolchain=,--gcc-toolchain=}"[use the gcc toolchain at the given directory]:directory:_files -/"
    "-gcodeview[generate CodeView debug information]"
    {-gcodeview-ghash,-gno-codeview-ghash}"[emit type record hashes is a .debug section]"
    "-gcolumn-info[column info]"
    "-gdwarf-aranges[DWARF aranges]"
    "-gembed-source[embed source text in DWARF debug sections]"
    "-gfull[emit debugging information for all symbols and types]"
    {-G-,-G=-,-msmall-data-limit=,-msmall-data-threshold}"[Put objects of at most size bytes into small data section]:size"
    "-ggnu-pubnames[gnu pubnames]"
    "-ginline-line-tables[inline line tables]"
    "-gline-directives-only[emit debug line info directives only]"
    "-gline-tables-only[line tables only]"
    "-glldb[lldb]"
    "-gmlt[emit debug line number tables only]"
    "-gmodules[generate debug info with external references]"
    "-gno-column-info[no column info]"
    "-gno-embed-source[no embed source]"
    "-gno-gnu-pubnames[no gnu pubnames]"
    "-gno-inline-line-tables[no inline line tables]"
    "-gno-record-command-line[no record command line]"
    "--gpu-instrument-lib=[instrument device library for HIP]:argument"
    "--gpu-max-threads-per-block=[default max threads per block for kernel launch bounds for HIP]"
    "-grecord-command-line[record command line]"
    "-gsce[sce]"
    "-gused[emit debugging information for symbols that are used]"
    "-gz=[DWARF debug sections compression type]::arg"
    "-headerpad_max_install_names[headerpad max install names]:argument"
    "-help[display this information]"
    "--help-hidden[display help for hidden options]"
    "--hip-device-lib=[hIP device library]:arg"
    "--hip-device-lib-path=[hip device lib path]:arg"
    "--hip-link[link clang-offload-bundler bundles for HIP]"
    "--hip-version=[HIP version in the format of major.minor.patch]"
    "-ibuiltininc[enable builtin #include directories even when -nostdinc is used before or after -ibuiltininc]"
    "-iframework[add directory to SYSTEM framework search path]:directory:_files -/"
    "-iframeworkwithsysroot[add directory to SYSTEM framework search path, absolute paths are relative to -isysroot]:directory:_files -/"
    "-image_base[image base]:argument"
    "-include-pch[include precompiled header file]:file:_files"
    "-index-header-map[make the next included directory (-I or -F) an indexer header map]"
    "-init[init]:arg"
    "-install_name[install name]:arg"
    "-integrated-as[integrated as]"
    "-interface-stub-version=[interface stub version]:arg"
    "-isystem-after[add directory to end of the SYSTEM include search path]:directory:_files -/"
    "-ivfsoverlay[overlay the virtual filesystem described by file over the real file system]:arg"
    "-iwithsysroot[add directory to SYSTEM include search path]:directory:_files -/"
    "-J[this option specifies where to put .mod files for compiled modules]:arg"
    "-keep_private_externs[keep private externs]"
    "*-lazy_framework[lazy framework]:framework:->framework"
    "*-lazy_library[lazy library]:arg"
    "--ld-path=[ld path]:arg"
    "--libomptarget-amdgcn-bc-path=[path to libomptarget-amdgcn bitcode library]:arg"
    "--libomptarget-nvptx-bc-path=[path to libomptarget-nvptx bitcode library]:arg"
    "--library-directory=[add directory to library search path]:directory:_files -/"
    "-maix-struct-return[return all structs in memory]"
    "-malign-branch-boundary=[specify the boundary's size to align branches]:size"
    "-malign-branch=[specify types of branches to align]:arg"
    "-mappletvos-version-min=[appletvos version min]:arg"
    "-mappletvsimulator-version-min=[appletvsimulator version min]:arg"
    "-mbackchain[link stack frames through backchain on System Z]"
    "-mbig-endian[big endian]"
    "-mbranches-within-32B-boundaries[align selected branches within 32-byte boundary]"
    "-mbranch-protection=[enforce targets of indirect branches and function returns]:arg"
    "-mcode-object-v3[legacy option to specify code object ABI V3]"
    "-mcode-object-version=[specify code object ABI version]:version"
    "-mconsole[console]:arg"
    "-mcrc[allow use of CRC instructions]"
    "-mdefault-build-attributes[default build attributes]:arg"
    "-mdll[dll]:arg"
    "-mdouble=[force double to be 32 bits or 64 bits]:arg"
    "-mdynamic-no-pic[dynamic no pic]:arg"
    "-meabi[set EABI type]:arg"
    "-menable-experimental-extensions[enable use of experimental RISC-V extensions]"
    "-menable-unsafe-fp-math[allow unsafe floating-point math optimizations which may decrease precision]"
    "-mfix-cortex-a53-835769[workaround Cortex-A53 erratum 835769]"
    "-mfloat-abi=[float abi]:arg"
    "-mfpu=[fpu]:arg"
    "-mglobal-merge[enable merging of globals]"
    "-mharden-sls=[select straight-line speculation hardening scope]:arg"
    "--mhwdiv=[hwdiv]:arg"
    "-mhwdiv=[hwdiv]:arg"
    "-mhwmult=[hwmult]:arg"
    "-mignore-xcoff-visibility[do not emit the visibility attribute for asm]"
    "--migrate[run the migrator]"
    "-mimplicit-float[implicit float]"
    "-mimplicit-it=[implicit it]:arg"
    "-mincremental-linker-compatible[emit an object file which can be used with an incremental linker]"
    "-mios-simulator-version-min=[ios simulator version min]:arg"
    "-mios-version-min=[ios version min]:arg"
    "-miphoneos-version-min=[iphoneos version min]:arg"
    "-miphonesimulator-version-min=[iphonesimulator version min]:arg"
    "-mkernel[kernel]"
    "-mlinker-version=[linker version]:arg"
    "-mlittle-endian[little endian]"
    "-mllvm[additional arguments to forward to LLVM's option processing]:arg"
    "-mlong-calls[generate branches with extended addressability]"
    "-mlvi-cfi[enable only control-flow mitigations for Load Value Injection]"
    "-mlvi-hardening[enable all mitigations for Load Value Injection]"
    "-mmacos-version-min=[set Mac OS X deployment target]:arg"
    "-mmacosx-version-min=[macosx version min]:arg"
    "-mmcu=[mcu]:arg"
    "-module-dependency-dir[directory to dump module dependencies to]:arg"
    "-module-dir[odule dir]:dir"
    "-module-file-info[provide information about a particular module file]"
    "-moslib=[oslib]:arg"
    "-moutline-atomics[generate local calls to out-of-line atomic operations]"
    "-mpacked-stack[use packed stack layout]"
    "-mpad-max-prefix-size=[specify maximum number of prefixes to use for padding]:arg"
    "-mpie-copy-relocations[pie copy relocations]"
    "-mprefer-vector-width=[specifies preferred vector width]:arg"
    "-mqdsp6-compat[enable hexagon-qdsp6 backward compatibility]"
    "-mrelax-all[relax all machine instructions]"
    "-mrelax[enable linker relaxation]"
    "-mretpoline[retpoline]"
    "-mseses[enable speculative execution side effect suppression (SESES)]"
    "-msign-return-address=[select return address signing scope]:arg"
    "-msim[sim]"
    "-mspeculative-load-hardening[speculative load hardening]"
    "-mstack-alignment=[set the stack alignment]:arg"
    "-mstack-probe-size=[set the stack probe size]:size"
    "-mstack-protector-guard-offset=[use the given offset for addressing the stack-protector guard]:arg"
    "-mstack-protector-guard-reg=[use the given reg for addressing the stack-protector guard]:reg"
    "-msvr4-struct-return[return small structs in registers]"
    "-mthread-model[the thread model to use]:arg"
    "-mthumb[thumb]"
    "-mtls-size=[specify bit size of immediate TLS offsets]:arg"
    "-mtvos-simulator-version-min=[tvos simulator version min]:arg"
    "-mtvos-version-min=[tvos version min]:arg"
    "-multi_module[multi module]"
    "-multiply_defined[multiply defined]:arg"
    "-multiply_defined_unused[multiply defined unused]:arg"
    "-municode[unicode]:arg"
    "-munsafe-fp-atomics[enable unsafe floating point atomic instructions]"
    "-mv55[equivalent to -mcpu=hexagonv55]"
    "-mv5[equivalent to -mcpu=hexagonv5]"
    "-mv60[equivalent to -mcpu=hexagonv60]"
    "-mv62[equivalent to -mcpu=hexagonv62]"
    "-mv65[equivalent to -mcpu=hexagonv65]"
    "-mv66[equivalent to -mcpu=hexagonv66]"
    "-mv67[equivalent to -mcpu=hexagonv67]"
    "-mv67t[equivalent to -mcpu=hexagonv67t]"
    "-mv68[equivalent to -mcpu=hexagonv68]"
    "-mvx[vx]"
    "-mwarn-nonportable-cfstrings[warn nonportable cfstrings]"
    "-mwatchos-simulator-version-min=[watchos simulator version min]:arg"
    "-mwatchos-version-min=[watchos version min]:arg"
    "-mwatchsimulator-version-min=[watchsimulator version min]:arg"
    "-mwavefrontsize64[specify wavefront size 64 mode]"
    "-mwindows[windows]:arg"
    "-mzvector[zvector]"
    "-nobuiltininc[do not search builtin directory for include files]"
    "-nocpp[no cpp]"
    "-nocudainc[do not add include paths for CUDA/HIP and do not include the default CUDA/HIP wrapper headers]"
    "*--no-cuda-include-ptx=[do not include ptx for the following gpu architecture]:argument"
    "-nocudalib[do not link device library for CUDA/HIP device compilation]"
    "--no-cuda-noopt-device-debug[disable device-side debug info generation]"
    "--no-cuda-version-check[don't error out if the detected version of the CUDA install is too low for the requested CUDA gpu architecture]"
    "-no_dead_strip_inits_and_terms[no dead strip inits and terms]"
    "-nofixprebinding[no fixprebinding]"
    "-nogpuinc[no gpuinc]"
    "-nogpulib[no gpulib]"
    "--no-integrated-cpp[no integrated cpp]"
    "-no-integrated-cpp[no integrated cpp]"
    "-nolibc[no libc]"
    "-nomultidefs[no multidefs]"
    "--no-offload-arch=[no offload arch]:arg"
    "-no-pie[no pie]"
    "-nopie[no pie]"
    "-noprebind[no prebind]"
    "-noprofilelib[no profilelib]"
    "-no-pthread[no pthread]"
    "-noseglinkedit[no seglinkedit]"
    "--no-standard-libraries[no standard libraries]"
    "-nostdinc\+\+[disable standard #include directories for the C++ standard library]"
    "-nostdlibinc[do not search standard system directories for include files]"
    "-nostdlib\+\+[no stdlib++]"
    "--no-system-header-prefix=[no system header prefix]:prefix"
    "--no-undefined[no undefined]"
    "-objcmt-atomic-property[make migration to atomic properties]"
    "-objcmt-migrate-all[enable migration to modern ObjC]"
    "-objcmt-migrate-annotation[enable migration to property and method annotations]"
    "-objcmt-migrate-designated-init[enable migration to infer NS_DESIGNATED_INITIALIZER for initializer methods]"
    "-objcmt-migrate-instancetype[enable migration to infer instancetype for method result type]"
    "-objcmt-migrate-literals[enable migration to modern ObjC literals]"
    "-objcmt-migrate-ns-macros[enable migration to NS_ENUM/NS_OPTIONS macros]"
    "-objcmt-migrate-property-dot-syntax[enable migration of setter/getter messages to property-dot syntax]"
    "-objcmt-migrate-property[enable migration to modern ObjC property]"
    "-objcmt-migrate-protocol-conformance[enable migration to add protocol conformance on classes]"
    "-objcmt-migrate-readonly-property[enable migration to modern ObjC readonly property]"
    "-objcmt-migrate-readwrite-property[enable migration to modern ObjC readwrite property]"
    "-objcmt-migrate-subscripting[enable migration to modern ObjC subscripting]"
    "-objcmt-ns-nonatomic-iosonly[enable migration to use NS_NONATOMIC_IOSONLY macro for setting property's atomic attribute]"
    "-objcmt-returns-innerpointer-property[enable migration to annotate property with NS_RETURNS_INNER_POINTER]"
    "-objcmt-whitelist-dir-path=[objcmt whitelist dir path]:arg"
    "-objcmt-white-list-dir-path=[only modify files with a filename contained in the provided directory path]:arg"
    "-ObjC[treat source files as Objective-C]"
    "-ObjC\+\+[treat source files as Objective-C++]"
    "-object[object]"
    "--offload-arch=[offload arch]:arg"
    "--output-class-directory=[output class directory]:arg"
    "-pagezero_size[pagezero size]:arg"
    "-pg[enable mcount instrumentation]"
    {-p,--profile}"[enable function profiling for prof]"
    "-prebind_all_twolevel_modules[prebind all twolevel modules]"
    "-prebind[prebind]"
    "--precompile[only precompile the input]"
    "-preload[preload]"
    "--print-diagnostic-categories[print diagnostic categories]"
    "-print-effective-triple[print effective triple]"
    "--print-effective-triple[print the effective target triple]"
    "--print-file-name=[print the full library path of <file>]:file:_files"
    "-print-ivar-layout[enable Objective-C Ivar layout bitmap print trace]"
    "--print-libgcc-file-name[print the library path for the currently used compiler runtime library]"
    "--print-multi-directory[print multi directory]"
    "--print-multi-lib[print multi lib]"
    "--print-prog-name=[print the full program path of <name>]:name"
    "-print-resource-dir[print resource dir]"
    "--print-resource-dir[print the resource directory pathname]"
    "--print-search-dirs[print the paths used for finding libraries and programs]"
    "--print-supported-cpus[print supported cpus]"
    "-print-supported-cpus[print supported cpus]"
    "-print-targets[print targets]"
    "--print-targets[print the registered targets]"
    "-print-target-triple[print target triple]"
    "--print-target-triple[print the normalized target triple]"
    "-private_bundle[private bundle]"
    "--profile-blocks[undocumented option]"
    "-pthreads[pthreads]"
    "-pthread[support POSIX threads in generated code]"
    "--ptxas-path=[path to ptxas (used for compiling CUDA code)]:arg"
    "-Qunused-arguments[don't emit warning for unused driver arguments]"
    "-read_only_relocs[read only relocs]:arg"
    "-relocatable-pch[relocatable pch]"
    "--relocatable-pch[whether to build a relocatable precompiled header]"
    "-R[enable the specified remark]:remark"
    "--resource=[resource]:arg"
    "-rewrite-legacy-objc[rewrite Legacy Objective-C source to C++]"
    "-rewrite-objc[rewrite Objective-C source to C++]"
    "--rocm-device-lib-path=[rOCm device library path]:arg"
    "--rocm-path=[rOCm installation path]:arg"
    "-Rpass-analysis=[report transformation analysis from optimization passes]:regex"
    "-Rpass-missed=[report missed transformations by optimization passes]:arg"
    "-Rpass=[report transformations performed by optimization passes]:arg"
    "-rpath[rpath]:arg"
    "-r[product a relocatable object as output]"
    "--rtlib=[compiler runtime library to use]:arg"
    "-rtlib=[rtlib]:arg"
    "--save-stats=[save llvm statistics]:arg"
    "-sectalign[sectalign]:arg"
    "-sectcreate[sectcreate]:arg"
    "-sectobjectsymbols[sectobjectsymbols]:arg"
    "-sectorder[sectorder]:arg"
    "-seg1addr[seg1addr]:arg"
    "-segaddr[segaddr]:arg"
    "-seg_addr_table_filename[seg addr table filename]:arg"
    "-seg_addr_table[seg addr table]:arg"
    "-segcreate[segcreate]:arg"
    "-seglinkedit[seglinkedit]"
    "-segprot[segprot]:arg"
    "-segs_read_only_addr[segs read only addr]:arg"
    "-segs_read_[segs read]:arg"
    "-segs_read_write_addr[segs read write addr]:arg"
    "--serialize-diagnostics[serialize compiler diagnostics to a file]:arg"
    "-serialize-diagnostics[serialize diagnostics]:arg"
    "-shared-libasan[dynamically link the sanitizer runtime]"
    "-shared-libsan[shared libsan]"
    "--shared[shared]"
    "--signed-char[signed char]"
    "-single_module[single module]"
    "--specs=[specs]:arg"
    "-static-libgfortran[static libgfortran]"
    "-static-libsan[statically link the sanitizer runtime]"
    "-static-libstdc\+\+[static libstdc++]"
    "-static-openmp[use the static host OpenMP runtime while linking.]"
    "-static-pie[static pie]"
    "--static[static]"
    "-std-default=[std default]:arg"
    "--stdlib=[c++ standard library to use]:arg"
    "-stdlib\+\+-isystem[use directory as the C++ standard library include path]:directory:_files -/"
    "-stdlib=[stdlib]:arg"
    "-sub_library[sub library]:arg"
    "-sub_umbrella[sub umbrella]:arg"
    "-sycl-std=[SYCL language standard to compile for]:standard"
    "--system-header-prefix=[treat all #include paths starting with <prefix> as including a system header]:prefix"
    "-target[generate code for the given target]:arg"
    "--target=[target]:arg"
    "-Tbss[set starting address of BSS to <addr>]:addr"
    "-Tdata[set starting address of DATA to <addr>]:addr"
    "--traditional[traditional]"
    "-traditional[traditional]"
    "-Ttext[set starting address of TEXT to <addr>]:addr"
    "-t[undocumented option]"
    "-twolevel_namespace_hints[twolevel namespace hints]"
    "-twolevel_namespace[twolevel namespace]"
    "-umbrella[umbrella]:arg"
    "-undefined[undefined]:arg"
    "-unexported_symbols_list[unexported symbols list]:arg"
    "--unsigned-char[unsigned char]"
    "--unwindlib=[unwind library to use]:arg"
    "-unwindlib=[unwindlib]:arg"
    "--verify-debug-info[verify the binary representation of debug output]"
    "-verify-pch[load and verify that a pre-compiled header file is not stale]"
    "--warn-=-[enable the specified warning]:warning:->warning"
    "*-weak_framework[weak framework]:framework:->framework"
    "*-weak_library[weak library]:arg"
    "-weak-l[weak l]:arg"
    "-weak_reference_mismatches[weak reference mismatches]:arg"
    "-whatsloaded[whatsloaded]"
    "-whyload[whyload]"
    "-working-directory=[resolve file paths relative to the specified directory]:arg"
    "-Xanalyzer[pass <arg> to the static analyzer]:arg"
    "-Xarch_device[pass arg to CUDA/HIP device compilation]:argument"
    "-Xarch_host[pass arg to CUDA/HIP host compilation]:argument"
    "-Xclang[pass <arg> to the clang compiler]:arg"
    "-Xcuda-fatbinary[pass arg to fatbinary invocation]:argument"
    "-Xcuda-ptxas[pass arg to the ptxas assemler]:argument"
    "-Xflang[pass <arg> to the flang compiler]:arg"
    "-Xopenmp-target[pass arg to the the target offloading toolchain]:argument"
    "-y[the action to perform on the input]:arg"
    "-Z-[undocumented option]:argument"
  )
else
  args+=(
    "--dump=[dump information]:argument"
    '-flto=-[enable link-time optimization]::jobs:'
    '*--help=-[display this information]:class:->help'
  )
fi

local -a sanitizers
sanitizers=(
  address alignment bool bounds enum float-cast-overflow float-divide-by-zero
  integer-divide-by-zero memory nonnull-attribute null nullability-arg
  nullability-assign nullability-return object-size pointer-overflow return
  unsigned-integer-overflow returns-nonnull-attribute shift signed-integer-overflow
  unreachable vla-bound vptr
)

local -a languages
languages=(
  c c-header cpp-output c++ c++-header c++-cpp-output objective-c objective-c-header
  objective-c-cpp-output objective-c++ objective-c++-header objective-c++-cpp-output
  assembler assembler-with-cpp ada f77 f77-cpp-input f95 f95-cpp-input go java
  brig none
)

# warnings (from --help=warnings), note some -W options are listed by --help=common instead
warnings+=(
  '-Wabi-tag[warn if a subobject has an abi_tag attribute that the complete object type does not have]'
  '-Wabi[warn about things that will change when compiling with an ABI-compliant compiler]::'
  '-Waddress[warn about suspicious uses of memory addresses]'
  '-Waggregate-return[warn about returning structures, unions or arrays]'
  '-Waggressive-loop-optimizations[warn if a loop with constant number of iterations triggers undefined behavior]'
  '-Waliasing[warn about possible aliasing of dummy arguments]'
  '-Walign-commons[warn about alignment of COMMON blocks]'
  '-Waligned-new=[warn even if '\'new\'' uses a class member allocation function]:none|global|all: '
  '-Wall[enable most warning messages]'
  '-Walloca-larger-than=[warn on unbounded uses of alloca, and on bounded uses of alloca whose bound can be larger than <number> bytes]:bytes: '
  '-Walloca[warn on any use of alloca]'
  '-Walloc-size-larger-than=[warn for calls to allocation functions that attempt to allocate objects larger than the specified number of bytes]:bytes: '
  '-Walloc-zero[warn for calls to allocation functions that specify zero bytes]'
  '-Wampersand[warn about missing ampersand in continued character constants]'
  '-Wargument-mismatch[warn about type and rank mismatches between arguments and parameters]'
  '-Warray-bounds[warn if an array is accessed out of bounds]'
  '-Warray-bounds=[warn if an array is accessed out of bounds]:level:(1 2)'
  '-Warray-temporaries[warn about creation of array temporaries]'
  '-Wassign-intercept[warn whenever an Objective-C assignment is being intercepted by the garbage collector]'
  '-Wattributes[warn about inappropriate attribute usage]'
  '-Wbad-function-cast[warn about casting functions to incompatible types]'
  '-Wbool-compare[warn about boolean expression compared with an integer value different from true/false]'
  '-Wbool-operation[warn about certain operations on boolean expressions]'
  '-Wbuiltin-declaration-mismatch[warn when a built-in function is declared with the wrong signature]'
  '-Wbuiltin-macro-redefined[warn when a built-in preprocessor macro is undefined or redefined]'
  '-Wc++0x-compat[deprecated in favor of -Wc++11-compat]'
  '-Wc++11-compat[warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 2011]'
  '-Wc++14-compat[warn about C++ constructs whose meaning differs between ISO C++ 2011 and ISO C++ 2014]'
  '-Wc++1z-compat[warn about C++ constructs whose meaning differs between ISO C++ 2014 and (forthcoming) ISO C++ 201z(7?)]'
  '-Wc90-c99-compat[warn about features not present in ISO C90, but present in ISO C99]'
  '-Wc99-c11-compat[warn about features not present in ISO C99, but present in ISO C11]'
  '-Wcast-align[warn about pointer casts which increase alignment]'
  '-Wcast-qual[warn about casts which discard qualifiers]'
  '-Wc-binding-type[warn if the type of a variable might be not interoperable with C]'
  '-Wc++-compat[warn about C constructs that are not in the common subset of C and C++]'
  '-Wcharacter-truncation[warn about truncated character expressions]'
  '-Wchar-subscripts[warn about subscripts whose type is "char"]'
  '-Wchkp[warn about memory access errors found by Pointer Bounds Checker]'
  '-Wclobbered[warn about variables that might be changed by "longjmp" or "vfork"]'
  '-Wcomments[synonym for -Wcomment]'
  '-Wcomment[warn about possibly nested block comments, and C++ comments spanning more than one physical line]'
  '-Wcompare-reals[warn about equality comparisons involving REAL or COMPLEX expressions]'
  '-Wconditionally-supported[warn for conditionally-supported constructs]'
  '-Wconversion-extra[warn about most implicit conversions]'
  '-Wconversion-null[warn for converting NULL from/to a non-pointer type]'
  '-Wconversion[warn for implicit type conversions that may change a value]'
  '-Wcoverage-mismatch[warn in case profiles in -fprofile-use do not match]'
  '-Wcpp[warn when a #warning directive is encountered]'
  '-Wctor-dtor-privacy[warn when all constructors and destructors are private]'
  '-Wdangling-else[warn about dangling else]'
  '-Wdate-time[warn about __TIME__, __DATE__ and __TIMESTAMP__ usage]'
  '-Wdeclaration-after-statement[warn when a declaration is found after a statement]'
  '-Wdelete-incomplete[warn when deleting a pointer to incomplete type]'
  '-Wdelete-non-virtual-dtor[warn about deleting polymorphic objects with non- virtual destructors]'
  '-Wdeprecated-declarations[warn about uses of __attribute__((deprecated)) declarations]'
  '-Wdeprecated[warn if a deprecated compiler feature, class, method, or field is used]'
  '-Wdesignated-init[warn about positional initialization of structs requiring designated initializers]'
  '-Wdisabled-optimization[warn when an optimization pass is disabled]'
  '-Wdiscarded-array-qualifiers[warn if qualifiers on arrays which are pointer targets are discarded]'
  '-Wdiscarded-qualifiers[warn if type qualifiers on pointers are discarded]'
  '-Wdiv-by-zero[warn about compile-time integer division by zero]'
  '-Wdouble-promotion[warn about implicit conversions from "float" to "double"]'
  '-Wduplicated-branches[warn about duplicated branches in if-else statements]'
  '-Wduplicated-cond[warn about duplicated conditions in an if-else-if chain]'
  '-Wduplicate-decl-specifier[warn when a declaration has duplicate const, volatile, restrict or _Atomic specifier]'
  '-Weffc\+\+[warn about violations of Effective C++ style rules]'
  '-Wempty-body[warn about an empty body in an if or else statement]'
  '-Wendif-labels[warn about stray tokens after #else and #endif]'
  '-Wenum-compare[warn about comparison of different enum types]'
  # '-Werror-implicit-function-declaration[this switch is deprecated; use -Werror=implicit-fun]' # this still exists but makes completing -Werror= less convenient
  '-Wexpansion-to-defined[warn if "defined" is used outside #if]'
  '-Wextra[print extra (possibly unwanted) warnings]'
  '-Wfloat-conversion[warn for implicit type conversions that cause loss of floating point precision]'
  '-Wfloat-equal[warn if testing floating point numbers for equality]'
  '-Wformat-contains-nul[warn about format strings that contain NUL bytes]'
  '-Wformat-extra-args[warn if passing too many arguments to a function for its format string]'
  '-Wformat-nonliteral[warn about format strings that are not literals]'
  '-Wformat-overflow[warn about function calls with format strings that write past the end of the destination region]'
  '-Wformat-overflow=[warn about function calls with format strings that write past the end of the destination region]:level:(1 2)'
  '-Wformat-security[warn about possible security problems with format functions]'
  '-Wformat-signedness[warn about sign differences with format functions]'
  '-Wformat-truncation[warn about calls to snprintf and similar functions that truncate output. Same as -Wformat- truncation=1.  Same as -Wformat-truncation=]'
  '-Wformat-truncation=[warn about calls to snprintf and similar functions that truncate output]:level:(1 2)'
  '-Wformat=[warn about printf/scanf/strftime/strfmon format string anomalies]::level:(1 2)'
  '-Wformat-y2k[warn about strftime formats yielding 2-digit years]'
  '-Wformat-zero-length[warn about zero-length formats]'
  '-Wframe-address[warn when __builtin_frame_address or __builtin_return_address is used unsafely]'
  '-Wframe-larger-than=[warn if a function'\''s stack frame requires more than <number> bytes]:bytes: '
  '-Wfree-nonheap-object[warn when attempting to free a non-heap object]'
  '-Wfunction-elimination[warn about function call elimination]'
  '-Whsa[warn when a function cannot be expanded to HSAIL]'
  '-Wignored-attributes[warn whenever attributes are ignored]'
  '-Wignored-qualifiers[warn whenever type qualifiers are ignored]'
  '-Wimplicit-fallthrough=[warn when a switch case falls through]:level:(1 2 3 4 5)'
  '-Wimplicit-function-declaration[warn about implicit function declarations]'
  '-Wimplicit-interface[warn about calls with implicit interface]'
  '-Wimplicit-int[warn when a declaration does not specify a type]'
  '-Wimplicit-procedure[warn about called procedures not explicitly declared]'
  '-Wimplicit[warn about implicit declarations]'
  '-Wimport[warn about imports]'
  '-Wincompatible-pointer-types[warn when there is a conversion between pointers that have incompatible types]'
  '-Winherited-variadic-ctor[warn about C++11 inheriting constructors when the base has a variadic constructor]'
  '-Winit-self[warn about variables which are initialized to themselves]'
  '-Winline[warn when an inlined function cannot be inlined]'
  '-Wint-conversion[warn about incompatible integer to pointer and pointer to integer conversions]'
  '-Winteger-division[warn about constant integer divisions with truncated results]'
  '-Wint-in-bool-context[warn for suspicious integer expressions in boolean context]'
  '-Wintrinsic-shadow[warn if a user-procedure has the same name as an intrinsic]'
  '-Wintrinsics-std[warn on intrinsics not part of the selected standard]'
  '-Wint-to-pointer-cast[warn when there is a cast to a pointer from an integer of a different size]'
  '-Winvalid-memory-model[warn when an atomic memory model parameter is known to be outside the valid range]'
  '-Winvalid-offsetof[warn about invalid uses of the "offsetof" macro]'
  '-Winvalid-pch[warn about PCH files that are found but not used]'
  '-Wjump-misses-init[warn when a jump misses a variable initialization]'
  '-Wlarger-than=[warn if an object is larger than <number> bytes]:bytes: '
  '-Wline-truncation[warn about truncated source lines]'
  '-Wliteral-suffix[warn when a string or character literal is followed by a ud-suffix which does not begin with an underscore]'
  '-Wlogical-not-parentheses[warn when logical not is used on the left hand side operand of a comparison]'
  '-Wlogical-op[warn when a logical operator is suspiciously always evaluating to true or false]'
  '-Wlong-long[do not warn about using "long long" when -pedantic]'
  '-Wlto-type-mismatch[during link time optimization warn about mismatched types of global declarations]'
  '-Wmain[warn about suspicious declarations of "main"]'
  '-Wmaybe-uninitialized[warn about maybe uninitialized automatic variables]'
  '-Wmemset-elt-size[warn about suspicious calls to memset where the third argument contains the number of elements not multiplied by the element size]'
  '-Wmemset-transposed-args[warn about suspicious calls to memset where the third argument is constant literal zero and the second is not]'
  '-Wmisleading-indentation[warn when the indentation of the code does not reflect the block structure]'
  '-Wmissing-braces[warn about possibly missing braces around initializers]'
  '-Wmissing-declarations[warn about global functions without previous declarations]'
  '-Wmissing-field-initializers[warn about missing fields in struct initializers]'
  '-Wmissing-include-dirs[warn about user-specified include directories that do not exist]'
  '-Wmissing-parameter-type[warn about function parameters declared without a type specifier in K&R-style functions]'
  '-Wmissing-prototypes[warn about global functions without prototypes]'
  '-Wmudflap[warn about constructs not instrumented by -fmudflap]'
  '-Wmultichar[warn about use of multi-character character constants]'
  '-Wmultiple-inheritance[warn on direct multiple inheritance]'
  '-Wnamespaces[warn on namespace definition]'
  '-Wnarrowing[warn about narrowing conversions within { } that are ill-formed in C++11]'
  '-Wnested-externs[warn about "extern" declarations not at file scope]'
  '-Wnoexcept-type[warn if C++1z noexcept function type will change the mangled name of a symbol]'
  '-Wnoexcept[warn when a noexcept expression evaluates to false even though the expression can''t actually throw]'
  '-Wnonnull-compare[warn if comparing pointer parameter with nonnull attribute with NULL]'
  '-Wnonnull[warn about NULL being passed to argument slots marked as requiring non-NULL]'
  '-Wnonportable-cfstrings[warn on CFStrings containing nonportable characters]'
  '-Wnon-template-friend[warn when non-templatized friend functions are declared within a template]'
  '-Wnon-virtual-dtor[warn about non-virtual destructors]'
  '-Wnormalized=-[warn about non-normalised Unicode strings]:normalization:((id\:allow\ some\ non-nfc\ characters\ that\ are\ valid\ identifiers nfc\:only\ allow\ NFC nfkc\:only\ allow\ NFKC none\:allow\ any\ normalization)): '
  '-Wnull-dereference[warn if dereferencing a NULL pointer may lead to erroneous or undefined behavior]'
  '-Wodr[warn about some C++ One Definition Rule violations during link time optimization]'
  '-Wold-style-cast[warn if a C-style cast is used in a program]'
  '-Wold-style-declaration[warn for obsolescent usage in a declaration]'
  '-Wold-style-definition[warn if an old-style parameter definition is used]'
  '-Wopenmp-simd[warn if a simd directive is overridden by the vectorizer cost model]'
  '-Woverflow[warn about overflow in arithmetic expressions]'
  '-Woverlength-strings[warn if a string is longer than the maximum portable length specified by the standard]'
  '-Woverloaded-virtual[warn about overloaded virtual function names]'
  '-Woverride-init-side-effects[warn about overriding initializers with side effects]'
  '-Woverride-init[warn about overriding initializers without side effects]'
  '-Wpacked-bitfield-compat[warn about packed bit-fields whose offset changed in GCC 4.4]'
  '-Wpacked[warn when the packed attribute has no effect on struct layout]'
  '-Wpadded[warn when padding is required to align structure members]'
  '-Wparentheses[warn about possibly missing parentheses]'
  '-Wpedantic[issue warnings needed for strict compliance to the standard]'
  '-Wplacement-new=[warn for placement new expressions with undefined behavior]::level:(1 2)'
  '-Wpmf-conversions[warn when converting the type of pointers to member functions]'
  '-Wpointer-arith[warn about function pointer arithmetic]'
  '-Wpointer-compare[warn when a pointer is compared with a zero character constant]'
  '-Wpointer-sign[warn when a pointer differs in signedness in an assignment]'
  '-Wpointer-to-int-cast[warn when a pointer is cast to an integer of a different size]'
  '-Wpoison-system-directories[warn for -I and -L options using system directories if cross compiling]'
  '-Wpragmas[warn about misuses of pragmas]'
  '-Wproperty-assign-default[warn if a property for an Objective-C object has no assign semantics specified]'
  '-Wprotocol[warn if inherited methods are unimplemented]'
  '-Wpsabi[warn about psabi]'
  '-Wrealloc-lhs-all[warn when a left-hand-side variable is reallocated]'
  '-Wrealloc-lhs[warn when a left-hand-side array variable is reallocated]'
  '-Wreal-q-constant[warn about real-literal-constants with '\'q\'' exponent-letter]'
  '-Wredundant-decls[warn about multiple declarations of the same object]'
  '-Wregister[warn about uses of register storage specifier]'
  '-Wreorder[warn when the compiler reorders code]'
  '-Wrestrict[warn when an argument passed to a restrict- qualified parameter aliases with another argument]'
  '-Wreturn-local-addr[warn about returning a pointer/reference to a local or temporary variable]'
  '-Wreturn-type[warn whenever a function'\''s return type defaults to "int" (C), or about inconsistent return types (C++)]'
  '-Wscalar-storage-order[warn on suspicious constructs involving reverse scalar storage order]'
  '-Wselector[warn if a selector has multiple methods]'
  '-Wsequence-point[warn about possible violations of sequence point rules]'
  '-Wshadow-ivar[warn if a local declaration hides an instance variable]'
  '-Wshadow[warn when one variable shadows another.  Same as  -Wshadow=global]'
  '-Wshift-count-negative[warn if shift count is negative]'
  '-Wshift-count-overflow[warn if shift count >= width of type]'
  '-Wshift-negative-value[warn if left shifting a negative value]'
  '-Wshift-overflow[warn if left shift of a signed value overflows.  Same as -Wshift-overflow=]'
  '-Wshift-overflow=[warn if left shift of a signed value overflows]:level:(1 2)'
  '-Wsign-compare[warn about signed-unsigned comparisons]'
  '-Wsign-conversion[warn for implicit type conversions between signed and unsigned integers]'
  '-Wsign-promo[warn when overload promotes from unsigned to signed]'
  '-Wsized-deallocation[warn about missing sized deallocation functions]'
  '-Wsizeof-array-argument[warn when sizeof is applied on a parameter declared as an array]'
  '-Wsizeof-pointer-memaccess[warn about suspicious length parameters to certain string functions if the argument uses sizeof]'
  '-Wstack-protector[warn when not issuing stack smashing protection for some reason]'
  '-Wstack-usage=[warn if stack usage might be larger than specified amount]:bytes: '
  '-Wstrict-aliasing[warn about code which might break strict aliasing rules]'
  '-Wstrict-aliasing=-[warn about code which might break strict aliasing rules]:level of checking (higher is more accurate):(1 2 3)'
  '-Wstrict-null-sentinel[warn about uncasted NULL used as sentinel]'
  '-Wstrict-overflow[warn about optimizations that assume that signed overflow is undefined]'
  '-Wstrict-overflow=-[warn about optimizations that assume that signed overflow is undefined]:level of checking (higher finds more cases):(1 2 3 4 5)'
  '-Wstrict-prototypes[warn about unprototyped function declarations]'
  '-Wstrict-selector-match[warn if type signatures of candidate methods do not match exactly]'
  '-Wstringop-overflow=[under the control of Object Size type, warn about buffer overflow in string manipulation functions like memcpy and strcpy]:level:(1 2 3 4)'
  '-Wstringop-overflow[warn about buffer overflow in string manipulation functions like memcpy and strcpy.  Same as  -Wstringop-overflow=]'
  '-Wsubobject-linkage[warn if a class type has a base or a field whose type uses the anonymous namespace or depends on a type with no linkage]'
  '*-Wsuggest-attribute=-[warn about functions that might be candidates for attributes]:attribute:(pure const noreturn format)'
  '-Wsuggest-final-methods[warn about C++ virtual methods where adding final keyword would improve code quality]'
  '-Wsuggest-final-types[warn about C++ polymorphic types where adding final keyword would improve code quality]'
  '-Wsuggest-override[suggest that the override keyword be used when the declaration of a virtual function overrides another]'
  '-Wsurprising[warn about "suspicious" constructs]'
  '-Wswitch-bool[warn about switches with boolean controlling expression]'
  '-Wswitch-default[warn about enumerated switches missing a "default-" statement]'
  '-Wswitch-enum[warn about all enumerated switches missing a specific case]'
  '-Wswitch-unreachable[warn about statements between switch'\''s controlling expression and the first case]'
  '-Wswitch[warn about enumerated switches, with no default, missing a case]'
  '-Wsync-nand[warn when __sync_fetch_and_nand and __sync_nand_and_fetch built-in functions are used]'
  '-Wsynth[deprecated. This switch has no effect]'
  '-Wsystem-headers[do not suppress warnings from system headers]'
  '-Wtabs[permit nonconforming uses of the tab character]'
  '-Wtarget-lifetime[warn if the pointer in a pointer assignment might outlive its target]'
  '-Wtautological-compare[warn if a comparison always evaluates to true or false]'
  '-Wtemplates[warn on primary template declaration]'
  '-Wterminate[warn if a throw expression will always result in a call to terminate()]'
  '-W[this switch is deprecated; use -Wextra instead]'
  '-Wtraditional-conversion[warn of prototypes causing type conversions different from what would happen in the absence of prototype]'
  '-Wtraditional[warn about features not present in traditional C]'
  '-Wtrampolines[warn whenever a trampoline is generated]'
  '-Wtrigraphs[warn if trigraphs are encountered that might affect the meaning of the program]'
  '-Wtype-limits[warn if a comparison is always true or always false due to the limited range of the data type]'
  '-Wundeclared-selector[warn about @selector()s without previously declared methods]'
  '-Wundefined-do-loop[warn about an invalid DO loop]'
  '-Wundef[warn if an undefined macro is used in an #if directive]'
  '-Wunderflow[warn about underflow of numerical constant expressions]'
  '-Wuninitialized[warn about uninitialized automatic variables]'
  '-Wunknown-pragmas[warn about unrecognized pragmas]'
  '-Wunsafe-loop-optimizations[warn if the loop cannot be optimized due to nontrivial assumptions]'
  '-Wunsuffixed-float-constants[warn about unsuffixed float constants]'
  '-Wunused-but-set-parameter[warn when a function parameter is only set, otherwise unused]'
  '-Wunused-but-set-variable[warn when a variable is only set, otherwise unused]'
  '-Wunused-const-variable[warn when a const variable is unused.  Same as  -Wunused-const-variable=]'
  '-Wunused-const-variable=[warn when a const variable is unused]:level:(1 2)'
  '-Wunused-dummy-argument[warn about unused dummy arguments]'
  '-Wunused[enable all -Wunused- warnings]'
  '-Wunused-function[warn when a function is unused]'
  '-Wunused-label[warn when a label is unused]'
  '-Wunused-local-typedefs[warn when typedefs locally defined in a function are not used]'
  '-Wunused-macros[warn about macros defined in the main file that are not used]'
  '-Wunused-parameter[warn when a function parameter is unused]'
  '-Wunused-result[warn if a caller of a function, marked with attribute warn_unused_result, does not use its return value]'
  '-Wunused-value[warn when an expression value is unused]'
  '-Wunused-variable[warn when a variable is unused]'
  '-Wuseless-cast[warn about useless casts]'
  '-Wuse-without-only[warn about USE statements that have no ONLY qualifier]'
  '-Wvarargs[warn about questionable usage of the macros used to retrieve variable arguments]'
  '-Wvariadic-macros[warn about using variadic macros]'
  '-Wvector-operation-performance[warn when a vector operation is compiled outside the SIMD]'
  '-Wvirtual-inheritance[warn on direct virtual inheritance]'
  '-Wvirtual-move-assign[warn if a virtual base has a non-trivial move assignment operator]'
  '-Wvla-larger-than=[warn on unbounded uses of variable-length arrays, and on bounded uses of variable-length arrays whose bound can be larger than <number> bytes]:bytes: ' 
  '-Wvla[warn if a variable length array is used]'
  '-Wvolatile-register-var[warn when a register variable is declared volatile]'
  '-Wwrite-strings[in C++, nonzero means warn about deprecated conversion from string literals to '\''char *'\''.  In C, similar warning, except that the conversion is]'
  '-Wzero-as-null-pointer-constant[warn when a literal '\''0'\'' is used as null pointer]'
  '-Wzerotrip[warn about zero-trip DO loops]'
)

# clang specific warnings
if [[ "$service" = clang* ]]; then
  warnings+=(
    '-Wlarge-by-value-copy=[warn on large by value copy]:argument'
    '-Wunreachable-code-aggressive[controls -Wunreachable-code, -Wunreachable-code-break, -Wunreachable-code-return]'
    '-Wunreachable-code-break[warn when break will never be executed]'
    '-Wunreachable-code-loop-increment[warn when loop will be executed only once]'
    '-Wunreachable-code-return[warn when return will not be executed]'
    '-Wunreachable-code[warn on code that will not be executed]'
  )
else
  warnings+=(
    '-Wunreachable-code[does nothing. Preserved for backward compatibility]'
  )
fi

args+=(
  {'*-A-','*--assert='}'[make an assertion]:define assertion:'
  "--all-warnings[display all warnings]"
  {-ansi,--ansi}"[same as -std=c89 or -std=c++98]"
  '-aux-info[emit declaration information into <file>]:file:_files'
  {'-B-','--prefix='}'[add <prefix> to the compiler'\''s search paths]:executable prefix:_files -/'
  '-b[specify target machine to compile to]:target machine:'
  {-CC,--comments-in-macros}'[do not discard comments, including macro expansion]'
  {-C,--comments}'[do not discard comments during preprocess]'
  {-c,--compile}'[compile and assemble, but do not link]'
  {'*-D-','*--define-macro='}'[define a macro]:define macro:'
  '-d-[dump the state of the preprocessor]:dump:->dump'
  '--dependencies[generate Makefile dependencies]'
  '-dumpbase[set the file basename to be used for dumps]:file:_files'
  '-dumpdir[set the directory name to be used for dumps]:file:_files -/'
  '-dumpmachine[display the compiler'\''s target processor]'
  '-dumpspecs[display all of the built in spec strings]'
  '-dumpversion[display the version of the compiler]'
  '+e-[control how virtual function definitions are used]:virtual function definitions in classes:((0\:only\ interface 1\:generate\ code))'
  {-e,--entry}"[specify program entry point is entry]:entry"
  {-E,--preprocess}'[preprocess only; do not compile, assemble or link]'
  '-fabi-version=-[use version <n> of the C++ ABI (default: 2)]:ABI version:(1 2 3 4 5 6)'
  "-fada-spec-parent=[dump Ada specs as child units of given parent]"
  '-faggressive-loop-optimizations[aggressively optimize loops using language constraints]'
  '-falign-functions[align the start of functions]'
  '-falign-jumps[align labels which are only reached by jumping]'
  '-falign-labels[align all labels]'
  '-falign-loops[align the start of loops]'
  "-fallow-parameterless-variadic-functions[allow variadic functions without named parameter]"
  "-fasm[recognize the asm keyword]"
  '-fassociative-math[allow optimization for floating-point arithmetic which may change the result of the operation due to rounding]'
  '-fasynchronous-unwind-tables[generate unwind tables that are exact at each instruction boundary]'
  '-fauto-inc-dec[generate auto-inc/dec instructions]'
  '-fbounds-check[generate code to check bounds before indexing arrays]'
  '-fbranch-count-reg[replace add, compare, branch with branch on count register]'
  '-fbranch-probabilities[use profiling information for branch probabilities]'
  '-fbranch-target-load-optimize2[perform branch target load optimization after prologue / epilogue threading]'
  '-fbranch-target-load-optimize[perform branch target load optimization before prologue / epilogue threading]'
  '-fbtr-bb-exclusive[restrict target load migration not to re-use registers in any basic block]'
  "-fbuilding-libgcc[specify building libgcc]"
  "-fbuiltin[recognize builtin functions]"
  '-fcaller-saves[save registers around function calls]'
  '-fcall-saved--[mark <register> as being preserved across functions]:register'
  '-fcall-used--[mark <register> as being corrupted by function calls]:register'
  "-fcanonical-system-headers[where shorter use canonicalized paths to system headers]"
  '-fcheck-data-deps[compare the results of several data dependence analyzers]'
  "-fcheck-pointer-bounds[add pointer bounds checker instrumentation]"
  "-fchkp-check-incomplete-type[generate pointer bounds check for variables with incomplete type]"
  "-fchkp-check-read[generate checks for all read accesses to memory]"
  "-fchkp-check-write[generate checks for all write accesses to memory]"
  "-fchkp-first-field-has-own-bounds[forces checker to use narrowed bounds for address of the first field]"
  "-fchkp-instrument-calls[generate bounds passing for calls]"
  "-fchkp-instrument-marked-only[instrument only functions marked with bnd_instrument attribute]"
  "-fchkp-narrow-bounds[control how checker handle pointers to object fields]"
  "-fchkp-narrow-to-innermost-array[forces checker to use bounds of the innermost arrays in case of nested static array access]"
  "-fchkp-optimize[allow checker optimizations]"
  "-fchkp-store-bounds[generate bounds stores for pointer writes]"
  "-fchkp-treat-zero-dynamic-size-as-infinite[with this option zero size obtained dynamically for objects with incomplete type will be treated as infinite]"
  "-fchkp-use-fast-string-functions[allow to use *_nobnd versions of string functions]"
  "-fchkp-use-nochk-string-functions[allow to use *_nochk versions of string functions]"
  "-fchkp-use-static-bounds[use statically initialized variable for vars bounds instead of generating them each time it is required]"
  "-fchkp-use-static-const-bounds[use statically initialized variable for constant bounds]"
  "-fchkp-use-wrappers[transform instrumented builtin calls into calls to wrappers]"
  "-fchkp-zero-input-bounds-for-main[use zero bounds for all incoming arguments in main function]"
  "-fcilkplus[enable Cilk Plus]"
  '-fcode-hoisting[enable code hoisting]'
  '-fcombine-stack-adjustments[looks for opportunities to reduce stack adjustments and stack references]'
  '-fcommon[do not put uninitialized globals in the common section]'
  '-fcompare-debug=-[compile with and without e.g. -gtoggle, and compare the final-insns dump]:opts:' #TODO: complete gcc options here
  '-fcompare-debug-second[run only the second compilation of -fcompare-debug]'
  '-fcompare-elim[perform comparison elimination after register allocation has finished]'
  "-fcond-mismatch[allow the arguments of the ? operator to have different types]"
  '-fconserve-stack[do not perform optimizations increasing noticeably stack usage]'
  '-fcprop-registers[perform a register copy-propagation optimization pass]'
  '-fcrossjumping[perform cross-jumping optimization]'
  '-fcse-follow-jumps[when running CSE, follow jumps to their targets]'
  '-fcx-fortran-rules[complex multiplication and division follow Fortran rules]'
  '-fcx-limited-range[omit range reduction step when performing complex division]'
  '-fdata-sections[place data items into their own section]'
  '-fdbg-cnt=-[,<counter>-<limit>,...) Set the debug counter limit]:counter\:limit,...: ' #TODO: gcc -fdbg-cnt-list -x c /dev/null -o /dev/null -c
  '-fdbg-cnt-list[list all available debugging counters with their limits and counts]'
  '-fdce[use the RTL dead code elimination pass]'
  "-fdebug-cpp[emit debug annotations during preprocessing]"
  '-fdebug-prefix-map=-[map one directory name to another in debug information]:/old/dir=/new/dir:->dirtodir'
  '-fdebug-types-section[output .debug_types section when using DWARF v4 debuginfo]'
  '-fdefer-pop[defer popping functions args from stack until later]'
  '-fdelayed-branch[attempt to fill delay slots of branch instructions]'
  '-fdelete-dead-exceptions[delete dead instructions that may throw exceptions]'
  '-fdelete-null-pointer-checks[delete useless null pointer checks]'
  '-fdevirtualize-speculatively[perform speculative devirtualization]'
  '-fdevirtualize[try to convert virtual calls to direct ones]'
  '-fdiagnostics-color=-[colorize diagnostics]::color:(never always auto)'
  '-fdiagnostics-generate-patch[print fix-it hints to stderr in unified diff format]'
  '-fdiagnostics-parseable-fixits[print fixit hints in machine-readable form]'
  '-fdiagnostics-show-caret[show the source line with a caret indicating the column]'
  '-fdiagnostics-show-location=-[how often to emit source location at the beginning of line-wrapped diagnostics]:source location:(once every-line)'
  '-fdiagnostics-show-option[amend appropriate diagnostic messages with the command line option that controls them]'
  "-fdirectives-only[preprocess directives only]"
  "-fdollars-in-identifiers[permit $ as an identifier character]"
  '-fdse[use the RTL dead store elimination pass]'
  "-fdump-ada-spec-slim[write all declarations as Ada code for the given file only]"
  "-fdump-ada-spec[write all declarations as Ada code transitively]"
  '-fdump-final-insns=-[dump to filename the insns at the end of translation]:filename:_files'
  '-fdump-go-spec=-[write all declarations to file as Go code]:filename:_files'
  '-fdump-noaddr[suppress output of addresses in debugging dumps]'
  '-fdump-passes[dump optimization passes]'
  '-fdump-unnumbered-links[suppress output of previous and next insn numbers in debugging dumps]'
  '-fdump-unnumbered[suppress output of instruction numbers, line number notes and addresses in debugging dumps]'
  '-fdwarf2-cfi-asm[enable CFI tables via GAS assembler directives]'
  '-fearly-inlining[perform early inlining]'
  '-feliminate-dwarf2-dups[perform DWARF2 duplicate elimination]'
  '-feliminate-unused-debug-symbols[perform unused type elimination in debug info]'
  '-feliminate-unused-debug-types[perform unused type elimination in debug info]'
  '-femit-class-debug-always[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]:spec list"
  "-femit-struct-debug-reduced[conservative reduced debug info for structs]"
  '-fexceptions[enable exception handling]'
  '-fexcess-precision=-[specify handling of excess floating-point precision]:precision handling:(fast standard)'
  "-fexec-charset=[convert all strings and character constants to character set]:character set"
  '-fexpensive-optimizations[perform a number of minor, expensive optimizations]'
  "-fextended-identifiers[permit universal character names in identifiers]"
  '-ffast-math[sets -fno-math-errno, -funsafe-math-optimizations, -ffinite-math-only, -fno-rounding-math, -fno-signaling-nans and -fcx-limited-range]'
  '-ffat-lto-objects[output lto objects containing both the intermediate language and binary output]'
  '-ffinite-math-only[assume no NaNs or infinities are generated]'
  '-ffixed--[mark <register> as being unavailable to the compiler]:register'
  '-ffloat-store[don'\''t allocate floats and doubles in extended- precision registers]'
  '-fforward-propagate[perform a forward propagation pass on RTL]'
  '-ffp-contract=-[perform floating- point expression contraction (default: fast)]:style:(on off fast)'
  '-ffp-contract=[perform floating-point expression contraction]:style:(off on fast)'
  '-ffp-int-builtin-inexact[allow built-in functions ceil, floor, round, trunc to raise "inexact" exceptions]'
  "-ffreestanding[do not assume that standard C libraries and main exist]"
  '-ffunction-cse[allow function addresses to be held in registers]'
  '-ffunction-sections[place each function into its own section]'
  '-fgcse-after-reload[perform global common subexpression elimination after register allocation has finished]'
  '-fgcse-las[perform redundant load after store elimination in global common subexpression elimination]'
  '-fgcse-lm[perform enhanced load motion during global common subexpression elimination]'
  '-fgcse[perform global common subexpression elimination]'
  '-fgcse-sm[perform store motion after global common subexpression elimination]'
  "-fgnu89-inline[use traditional GNU semantics for inline functions]"
  '-fgnu-tm[enable support for GNU transactional memory]'
  '-fgraphite[enable in and out of Graphite representation]'
  '-fgraphite-identity[enable Graphite Identity transformation]'
  '-fguess-branch-probability[enable guessing of branch probabilities]'
  '-fhoist-adjacent-loads[enable hoisting adjacent loads to encourage generating conditional move instructions]'
  "-fhosted[assume normal C execution environment]"
  '-fif-conversion2[perform conversion of conditional jumps to conditional execution]'
  '-fif-conversion[perform conversion of conditional jumps to branchless equivalents]'
  '-findirect-inlining[perform indirect inlining]'
  '-finhibit-size-directive[do not generate .size directives]'
  '-finline-atomics[inline __atomic operations when a lock free instruction sequence is available]'
  '-finline[enable inlining of function declared "inline", disabling disables all inlining]'
  '-finline-functions-called-once[integrate functions only required by their single caller]'
  '-finline-functions[integrate functions not declared "inline" into their callers when profitable]'
  '-finline-limit=-[limit the size of inlined functions to <number>]:number: '
  '-finline-small-functions[integrate functions into their callers when code size is known not to grow]'
  "-finput-charset=[specify the default character set for source files]:character set"
  '-finstrument-functions-exclude-file-list=-[do not instrument functions listed in files]:comma-separated file list:->commafiles'
  '-finstrument-functions-exclude-function-list=-[do not instrument listed functions]:comma-separated list of syms: '
  '-finstrument-functions[instrument function entry and exit with profiling calls]'
  '-fipa-bit-cp[perform interprocedural bitwise constant propagation]'
  '-fipa-cp-clone[perform cloning to make Interprocedural constant propagation stronger]'
  '-fipa-cp[perform interprocedural constant propagation]'
  '-fipa-icf-functions[perform Identical Code Folding for functions]'
  '-fipa-icf[perform Identical Code Folding for functions and read-only variables]'
  '-fipa-icf-variables[perform Identical Code Folding for variables]'
  '-fipa-profile[perform interprocedural profile propagation]'
  '-fipa-pta[perform interprocedural points-to analysis]'
  '-fipa-pure-const[discover pure and const functions]'
  '-fipa-ra[use caller save register across calls if possible]'
  '-fipa-reference[discover readonly and non addressable static variables]'
  '-fipa-sra[perform interprocedural reduction of aggregates]'
  '-fipa-vrp[perform IPA Value Range Propagation]'
  '-fira-algorithm=[set the used IRA algorithm]:algorithm:(cb priority)'
  '-fira-hoist-pressure[use IRA based register pressure calculation in RTL hoist optimizations]'
  '-fira-loop-pressure[use IRA based register pressure calculation in RTL loop optimizations]'
  '-fira-region=-[set regions for IRA]:region:(all mixed one)'
  '-fira-region=[set regions for IRA]:region:(one all mixed)'
  '-fira-share-save-slots[share slots for saving different hard registers]'
  '-fira-share-spill-slots[share stack slots for spilled pseudo-registers]'
  '-fira-verbose=-[control IRA'\''s level of diagnostic messages]:verbosity: '
  '-fisolate-erroneous-paths-attribute[detect paths that trigger erroneous or undefined behavior due to a null value being used in a way forbidden by a returns_nonnull or]'
  '-fisolate-erroneous-paths-dereference[detect paths that trigger erroneous or undefined behavior due to dereferencing a null pointer.  Isolate those paths from the main]'
  '-fivopts[optimize induction variables on trees]'
  '-fjump-tables[use jump tables for sufficiently large switch statements]'
  '-fkeep-inline-functions[generate code for functions even if they are fully inlined]'
  '-fkeep-static-consts[emit static const variables even if they are not used]'
  "-flax-vector-conversions[allow implicit conversions between vectors with differing numbers of subparts and/or differing element types]"
  '-fleading-underscore[give external symbols a leading underscore]'
  '-flifetime-dse[tell DSE that the storage for a C++ object is dead when the constructor starts and when the destructor finishes]'
  '-flive-range-shrinkage[relief of register pressure through live range shrinkage]'
  '-floop-nest-optimize[enable the loop nest optimizer]'
  '-floop-parallelize-all[mark all loops as parallel]'
  '-flra-remat[do CFG-sensitive rematerialization in LRA]'
  '-flto-compression-level=-[use specified zlib compression level for IL]:compression level: '
  '-flto-odr-type-merging[merge C++ types using One Definition Rule]'
  '-flto-partition=-[partition symbols and vars at linktime based on object files they originate from]:partitioning algorithm:(1to1 balanced max one none)'
  '-flto-report[report various link-time optimization statistics]'
  '-fmath-errno[set errno after built-in math functions]'
  '-fmax-errors=-[maximum number of errors to report]:errors: '
  '-fmem-report[report on permanent memory allocation]'
  '-fmem-report-wpa[report on permanent memory allocation in WPA only]'
  '-fmerge-all-constants[attempt to merge identical constants and constant variables]'
  '-fmerge-constants[attempt to merge identical constants across compilation units]'
  '-fmerge-debug-strings[attempt to merge identical debug strings across compilation units]'
  '-fmessage-length=-[limit diagnostics to <number> characters per line.  0 suppresses line-wrapping]:length: '
  '-fmodulo-sched-allow-regmoves[perform SMS based modulo scheduling with register moves allowed]'
  '-fmodulo-sched[perform SMS based modulo scheduling before the first scheduling pass]'
  '-fmove-loop-invariants[move loop invariant computations out of loops]'
  "-fms-extensions[don't warn about uses of Microsoft extensions]"
  "-fmudflapir[this switch lacks documentation]"
  "-fmudflap[this switch lacks documentation]"
  "-fmudflapth[this switch lacks documentation]"
  '-fnon-call-exceptions[support synchronous non-call exceptions]'
  '-fno-stack-limit[do not limit the size of the stack]'
  '-fno-threadsafe-statics[do not generate thread-safe code for initializing local statics]'
  '-fnothrow-opt[treat a throw() exception specification as noexcept to improve code size]'
  '-fomit-frame-pointer[when possible do not generate stack frames]'
  "-fopenacc[enable OpenACC]"
  "-fopenmp[enable OpenMP (implies -frecursive in Fortran)]"
  "-fopenmp-simd[enable OpenMP's SIMD directives]"
  '-foptimize-sibling-calls[optimize sibling and tail recursive calls]'
  '-foptimize-strlen[enable string length optimizations on trees]'
  '-fopt-info[enable all optimization info dumps on stderr]'
  '-fopt-info-type=-[dump compiler optimization details]:filename:_files'
  '-fpack-struct[pack structure members together without holes]'
  '-fpack-struct=[set initial maximum structure member alignment]:alignment (power of 2): '
  '-fpartial-inlining[perform partial inlining]'
  '-fpcc-struct-return[return small aggregates in memory, not registers]'
  "-fpch-deps[this switch lacks documentation]"
  "-fpch-preprocess[look for and use PCH files even when preprocessing]"
  '-fpeel-loops[perform loop peeling]'
  '-fpeephole2[enable an RTL peephole pass before sched2]'
  '-fpeephole[enable machine specific peephole optimizations]'
  '-fPIC[generate position-independent code if possible (large mode)]'
  '-fpic[generate position-independent code if possible (small mode)]'
  '-fPIE[generate position-independent code for executables if possible (large mode)]'
  '-fpie[generate position-independent code for executables if possible (small mode)]'
  "-fplan9-extensions[enable Plan 9 language extensions]"
  '-fplt[use PLT for PIC calls (-fno-plt- load the address from GOT at call site)]'
  '-fplugin-arg--[specify argument <key>=<value> for plugin <name>]:-fplugin-arg-name-key=value: ' #TODO
  '-fplugin=-[specify a plugin to load]:plugin: ' # TODO: complete plugins?
  '-fpost-ipa-mem-report[report on memory allocation before interprocedural optimization]'
  '-fpredictive-commoning[run predictive commoning optimization]'
  '-fprefetch-loop-arrays[generate prefetch instructions, if available, for arrays in loops]'
  '-fpre-ipa-mem-report[report on memory allocation before interprocedural optimization]'
  "-fpreprocessed[treat the input file as already preprocessed]"
  '-fprintf-return-value[treat known sprintf return values as constants]'
  '-fprofile-arcs[insert arc-based program profiling code]'
  '-fprofile-correction[enable correction of flow inconsistent profile data input]'
  '-fprofile-dir=-[set the top-level directory for storing the profile data]:profile directory:_files -/'
  '-fprofile[enable basic program profiling code]'
  '-fprofile-generate[enable common options for generating profile info for profile feedback directed optimizations]'
  '-fprofile-report[report on consistency of profile]'
  '-fprofile-use[enable common options for performing profile feedback directed optimizations]'
  '-fprofile-values[insert code to profile values of expressions]'
  '-frandom-seed=-[use <string> as random seed]:seed: '
  '-freciprocal-math[same as -fassociative-math for expressions which include division]'
  '-frecord-gcc-switches[record gcc command line switches in the object file]'
  '-free[turn on Redundant Extensions Elimination pass]'
  '-freg-struct-return[return small aggregates in registers]'
  '-frename-registers[perform a register renaming optimization pass]'
  '-freorder-blocks-algorithm=[set the used basic block reordering algorithm]:algorithm:(simple stc)'
  '-freorder-blocks-and-partition[reorder basic blocks and partition into hot and cold sections]'
  '-freorder-blocks[reorder basic blocks to improve code placement]'
  '-freorder-functions[reorder functions to improve code placement]'
  '-frequire-return-statement[functions which return values must end with return statements]'
  '-frerun-cse-after-loop[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]'
  '-frounding-math[disable optimizations that assume default FP rounding behavior]'
  '-frtti[generate run time type descriptor information]'
  "-fsanitize=-[enable AddressSanitizer, a memory error detector]:style:($sanitizers)"
  '-fsched2-use-superblocks[if scheduling post reload, do superblock scheduling]'
  '-fsched-critical-path-heuristic[enable the critical path heuristic in the scheduler]'
  '-fsched-dep-count-heuristic[enable the dependent count heuristic in the scheduler]'
  '-fsched-group-heuristic[enable the group heuristic in the scheduler]'
  '-fsched-interblock[enable scheduling across basic blocks]'
  '-fsched-last-insn-heuristic[enable the last instruction heuristic in the scheduler]'
  '-fsched-pressure[enable register pressure sensitive insn scheduling]'
  '-fsched-rank-heuristic[enable the rank heuristic in the scheduler]'
  '-fsched-spec[allow speculative motion of non-loads]'
  '-fsched-spec-insn-heuristic[enable the speculative instruction heuristic in the scheduler]'
  '-fsched-spec-load[allow speculative motion of some loads]'
  '-fsched-spec-load-dangerous[allow speculative motion of more loads]'
  '-fsched-stalled-insns[allow premature scheduling of queued insns]'
  '-fsched-stalled-insns-dep[set dependence distance checking in premature scheduling of queued insns]'
  '-fsched-stalled-insns-dep=[set dependence distance checking in premature scheduling of queued insns]:insns:'
  '-fsched-stalled-insns-dep=-[set dependence distance checking in premature scheduling of queued insns]:instructions: '
  '-fsched-stalled-insns=[set number of queued insns that can be prematurely scheduled]:insns:'
  '-fsched-stalled-insns=-[set number of queued insns that can be prematurely scheduled]:instructions: '
  '-fschedule-fusion[perform a target dependent instruction fusion optimization pass]'
  '-fschedule-insns2[reschedule instructions after register allocation]'
  '-fschedule-insns[reschedule instructions before register allocation]'
  '-fsched-verbose=-[set the verbosity level of the scheduler]:verbosity: '
  '-fsection-anchors[access data in the same section from shared anchor points]'
  '-fselective-scheduling2[run selective scheduling after reload]'
  '-fselective-scheduling[schedule instructions using selective scheduling algorithm]'
  '-fsel-sched-pipelining-outer-loops[perform software pipelining of outer loops during selective scheduling]'
  '-fsel-sched-pipelining[perform software pipelining of inner loops during selective scheduling]'
  '-fsel-sched-reschedule-pipelined[reschedule pipelined regions without pipelining]'
  "-fshort-double[use the same size for double as for float]"
  '-fshort-enums[use the narrowest integer type possible for enumeration types]'
  '-fshort-wchar[force the underlying type for "wchar_t" to be "unsigned short"]'
  '-fshow-column[show column numbers in diagnostics, when available]'
  '-fshrink-wrap[emit function prologues only before parts of the function that need it, rather than at the top of the function]'
  '-fshrink-wrap-separate[shrink-wrap parts of the prologue and epilogue separately]'
  '-fsignaling-nans[disable optimizations observable by IEEE signaling NaNs]'
  "-fsigned-bitfields[when signed or unsigned is not given make the bitfield signed]"
  "-fsigned-char[make char signed by default]"
  '-fsigned-zeros[disable floating point optimizations that ignore the IEEE signedness of zero]'
  '-fsimd-cost-model=[specifies the vectorization cost model for code marked with a simd directive]:model:(unlimited dynamic cheap)'
  '-fsingle-precision-constant[convert floating point constants to single precision constants]'
  '-fsplit-ivs-in-unroller[split lifetimes of induction variables when loops are unrolled]'
  '-fsplit-loops[perform loop splitting]'
  '-fsplit-paths[split paths leading to loop backedges]'
  '-fsplit-stack[generate discontiguous stack frames]'
  '-fsplit-wide-types[split wide types into independent registers]'
  '-fssa-backprop[enable backward propagation of use properties at the SSA level]'
  '-fssa-phiopt[optimize conditional patterns using SSA PHI nodes]'
  '-fstack-check=-[insert stack checking code into the program.  -fstack-check=specific if to argument given]:type:(none generic specific)'
  '-fstack-limit-register=-[trap if the stack goes past <register>]:register: '
  '-fstack-limit-symbol=-[trap if the stack goes past symbol <name>]:name: '
  '-fstack-protector-all[use a stack protection method for every function]'
  '-fstack-protector-explicit[use stack protection method only for functions with the stack_protect attribute]'
  '-fstack-protector-strong[use a smart stack protection method for certain functions]'
  '-fstack-protector[use propolice as a stack protection method]'
  '-fstack-reuse=[set stack reuse level for local variables]:level:(all named_vars none)'
  '-fstack-reuse=-[set stack reuse level for local variables]:reuse-level:(all named_vars none)'
  '-fstack-usage[output stack usage information on a per-function basis]'
  '-fstdarg-opt[optimize amount of stdarg registers saved to stack at start of function]'
  '-fstore-merging[merge adjacent stores]'
  '-fstrict-aliasing[assume strict aliasing rules apply]'
  '-fstrict-enums[assume that values of enumeration type are always within the minimum range of that type]'
  '-fstrict-overflow[treat signed overflow as undefined]'
  '-fstrict-volatile-bitfields[force bitfield accesses to match their type width]'
  '-fsync-libcalls[implement __atomic operations via libcalls to legacy __sync functions]'
  '-fsyntax-only[check for syntax errors, then stop]'
  "-ftabstop=[distance between tab stops for column reporting]:number"
  '-ftest-coverage[create data files needed by "gcov"]'
  '-fthread-jumps[perform jump threading optimizations]'
  '-ftime-report[report the time taken by each compiler pass]'
  '-ftls-model=-[set the default thread-local storage code generation model]:TLS model:(global-dynamic local-dynamic initial-exec local-exec)'
  '-ftracer[perform superblock formation via tail duplication]'
  "-ftrack-macro-expansion=[track locations of tokens coming from macro expansion and display them in error messages]::argument"
  '-ftrapping-math[assume floating-point operations can trap]'
  '-ftrapv[trap for signed overflow in addition, subtraction and multiplication]'
  '-ftree-bit-ccp[enable SSA-BIT-CCP optimization on trees]'
  '-ftree-builtin-call-dce[enable conditional dead code elimination for builtin calls]'
  '-ftree-ccp[enable SSA-CCP optimization on trees]'
  '-ftree-ch[enable loop header copying on trees]'
  '-ftree-coalesce-vars[enable SSA coalescing of user variables]'
  '-ftree-copy-prop[enable copy propagation on trees]'
  '-ftree-cselim[transform condition stores into unconditional ones]'
  '-ftree-dce[enable SSA dead code elimination optimization on trees]'
  '-ftree-dominator-opts[enable dominator optimizations]'
  '-ftree-dse[enable dead store elimination]'
  '-ftree-forwprop[enable forward propagation on trees]'
  '-ftree-fre[enable Full Redundancy Elimination (FRE) on trees]'
  '-ftree-loop-distribute-patterns[enable loop distribution for patterns transformed into a library call]'
  '-ftree-loop-distribution[enable loop distribution on trees]'
  '-ftree-loop-if-convert[convert conditional jumps in innermost loops to branchless equivalents]'
  '-ftree-loop-im[enable loop invariant motion on trees]'
  '-ftree-loop-ivcanon[create canonical induction variables in loops]'
  '-ftree-loop-linear[enable loop interchange transforms.  Same as  -floop-interchange]'
  '-ftree-loop-optimize[enable loop optimizations on tree level]'
  '-ftree-loop-vectorize[enable loop vectorization on trees]'
  '-ftree-lrs[perform live range splitting during the SSA- >normal pass]'
  '-ftree-parallelize-loops=[enable automatic parallelization of loops]'
  '-ftree-parallelize-loops=-[enable automatic parallelization of loops]:threads: '
  '-ftree-partial-pre[in SSA-PRE optimization on trees, enable partial- partial redundancy elimination]'
  '-ftree-phiprop[enable hoisting loads from conditional pointers]'
  '-ftree-pre[enable SSA-PRE optimization on trees]'
  '-ftree-pta[perform function-local points-to analysis on trees]'
  '-ftree-reassoc[enable reassociation on tree level]'
  '-ftree-scev-cprop[enable copy propagation of scalar-evolution information]'
  '-ftree-sink[enable SSA code sinking on trees]'
  '-ftree-slp-vectorize[enable basic block vectorization (SLP) on trees]'
  '-ftree-slsr[perform straight-line strength reduction]'
  '-ftree-sra[perform scalar replacement of aggregates]'
  '-ftree-switch-conversion[perform conversions of switch initializations]'
  '-ftree-tail-merge[enable tail merging on trees]'
  '-ftree-ter[replace temporary expressions in the SSA->normal pass]'
  '-ftree-vectorize[enable vectorization on trees]'
  '-ftree-vrp[perform Value Range Propagation on trees]'
  '-funconstrained-commons[assume common declarations may be overridden with ones with a larger trailing array]'
  '-funroll-all-loops[perform loop unrolling for all loops]'
  '-funroll-loops[perform loop unrolling when iteration count is known]'
  '-funsafe-loop-optimizations[allow loop optimizations to assume that the loops behave in normal way]'
  '-funsafe-math-optimizations[allow math optimizations that may violate IEEE or ISO standards]'
  "-funsigned-bitfields[when signed or unsigned is not given make the bitfield unsigned]"
  "-funsigned-char[make char unsigned by default]"
  '-funswitch-loops[perform loop unswitching]'
  '-funwind-tables[just generate unwind tables for exception handling]'
  '-fuse-ld=-[use the specified linker instead of the default linker]:linker:(bfd gold)'
  '-fuse-linker-plugin[use linker plugin during link-time optimization]'
  '-fvariable-expansion-in-unroller[apply variable expansion when loops are unrolled]'
  '-fvar-tracking-assignments[perform variable tracking by annotating assignments]'
  '-fvar-tracking-assignments-toggle[toggle -fvar-tracking-assignments]'
  '-fvar-tracking[perform variable tracking]'
  '-fvar-tracking-uninit[perform variable tracking and also tag variables that are uninitialized]'
  '-fvect-cost-model=[specifies the cost model for vectorization]:model:(unlimited dynamic cheap)'
  '-fverbose-asm[add extra commentary to assembler output]'
  '-fvisibility=-[set the default symbol visibility]:visibility:(default internal hidden protected)'
  '-fvpt[use expression value profiles in optimizations]'
  '-fweb[construct webs and split unrelated uses of single variable]'
  '-fwhole-program[perform whole program optimizations]'
  "-fwide-exec-charset=[convert all wide strings and character constants to character set]:character set"
  "-fworking-directory[generate a #line directive pointing at the current working directory]"
  '-fwrapv[assume signed arithmetic overflow wraps around]'
  '-fzero-initialized-in-bss[put zero initialized data in the bss section]'
  {-g-,--debug=}'[generate debug information]::debugging information type or level:(0 1 2 3 gdb gdb0 gdb1 gdb2 gdb3 coff stabs stabs+ dwarf dwarf+ dwarf-2 dwarf-3 dwarf-4 dwarf-5 dwarf32 dwarf64 xcoff xcoff+)'
  '-gno-pubnames[don'\''t generate DWARF pubnames and pubtypes sections]'
  '-gno-record-gcc-switches[don'\''t record gcc command line switches in DWARF DW_AT_producer]'
  '-gno-split-dwarf[don'\''t generate debug information in separate .dwo files]'
  '-gno-strict-dwarf[emit DWARF additions beyond selected version]'
  '-gpubnames[generate DWARF pubnames and pubtypes sections]'
  '-grecord-gcc-switches[record gcc command line switches in DWARF DW_AT_producer]'
  '-gsplit-dwarf[generate debug information in separate .dwo files]'
  '-gstrict-dwarf[don'\''t emit DWARF additions beyond selected version]'
  '-gtoggle[toggle debug information generation]'
  '-gvms[generate debug information in VMS format]'
  '--help[display this information]'
  {-H,--trace-includes}'[print name of each header file used]'
  {'*-idirafter','*--include-directory-after='}'[add directory after include search path]:second include path directory:_files -/'
  {'*-I-','*--include-directory='}'[add directory to include search path]:header file search path:_files -/'
  {'*-imacros','*--imacros='}'[include macros from file before parsing]:macro input file:_files -g \*.h\(-.\)'
  '-imultiarch[set <dir> to be the multiarch include subdirectory]:directory:_files -/' #XXX not in manpage
  "-imultilib=[set dir to be the multilib include subdirectory]:dir:_files -/"
  "--include-barrier[restrict all prior -I flags to double-quoted inclusion and remove current directory from include path]"
  {'*-include=','*--include='}'[include file before parsing]:include file:_files -g \*.h\(-.\)'
  '-iplugindir=-[set <dir> to be the default plugin directory]:directory:_files -/'
  {'*-iprefix','*--include-prefix='}'[set the -iwithprefix prefix]:prefix:_files'
  "-iquote=[add dir to the end of the quote include path]:dir:_files -/"
  "-isysroot=[set dir to be the system root directory]:dir:_files -/"
  '*-isystem[add directory to system include search path]:second include path directory (system):_files -/'
  {'*-iwithprefixbefore','*--include-with-prefix-before='}'[set directory to include search path with prefix]:main include path directory:_files -/'
  {'*-iwithprefix','*--include-with-prefix=','*--include-with-prefix-after='}'[set directory to system include search path with prefix]:second include path directory:_files -/'
  '*-L-[add directory to library search path]:library search path:_files -/'
  "-lang-asm[set lang asm]"
  '*-l+[include library found in search path]:library:->library'
  "-MF[write dependency output to the given file]:file:_files"
  "-MJ[write a compilation database entry per input]"
  "-MQ[add a make-quoted target]:target"
  '*-M-[set flags for generating Makefile dependencies]::output dependencies:->dependencies'
  "-MT[add an unquoted target]:target"
  '-no-canonical-prefixes[do not canonicalize paths when building relative prefixes to other gcc components]'
  '-nodefaultlibs[do not use the standard system libraries when linking]'
  '-nostartfiles[do not use the standard system startup files when linking]'
  {-nostdinc,--no-standard-includes}"[do not search standard system directories or compiler builtin directories for include files]"
  '-nostdlib[do not use standard system startup files or libraries when linking]'
  {-O-,--optimize=-}'[control the optimization]::optimization level:((0 1 2 3 g\:optimize\ for\ debugging\ experience s\:optimize\ for\ space fast\:optimize\ for\ speed\ disregarding\ exact\ standards\ compliance))'
  {-o,--output=}'[write output to file]:output file:_files -g "^*.(c|h|cc|C|cxx|cpp|hpp)(-.)"'
  "--output-pch=[output pch]"
  '--param[set parameter <param> to value.  See manpage for a complete list of parameters]:name=value'
  '-pass-exit-codes[exit with highest error code from a phase]'
  {-pedantic-errors,--pedantic-errors}'[like -pedantic but issue them as errors]'
  {-pedantic,--pedantic}'[issue all mandatory diagnostics in the C standard]'
  '(-pg)-p[enable function profiling for prof]'
  '-pie[create a position independent executable]'
  {-pipe,--pipe}'[use pipes rather than intermediate files]'
  {-P,--no-line-commands}'[inhibit generation of linkemakers during preprocess]'
  '(-p)-pg[enable function profiling for gprof]'
  '-###[print commands to run this compilation]'
  '-print-file-name=-[display the full path to library <library>]:library:->library'
  '-print-libgcc-file-name[display the name of the compiler'\''s companion library]'
  "--print-missing-file-dependencies[print missing file dependencies]"
  '-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-prog-name=-[display the full path to compiler component <program>]:program:'
  '-print-search-dirs[display the directories in the compiler'\''s search path]'
  '-print-sysroot[display the target libraries directory]'
  '-print-sysroot-headers-suffix[display the sysroot suffix used to find headers]'
  {-Qn,-fno-ident}"[do not emit metadata containing compiler name and version]"
  '-quiet[do not display functions compiled or elapsed time]'
  {-Qy,-fident}"[emit metadata containing compiler name and version]"
  '-rdynamic[pass the flag -export-dynamic to the ELF linker, on targets that support it]'
  "-remap[remap file names when including files]"
  {-S,--assemble}'[compile only; do not assemble or link]'
  '-save-stats=-[save code generation statistics]:location:(cwd obj)'
  '-save-temps[do not delete intermediate files]'
  '-shared[create a shared library]'
  '-shared-libgcc[force shared libgcc]'
  '*-specs=-[override built-in specs with the contents of <file>]:file:_files'
  '-s[remove all symbol table and relocation information from the executable]'
  '-static-libgcc[force static libgcc]'
  '-static[on systems that support dynamic linking, this prevents linking with the shared libraries]'
  {'-std=-','--std='}'[assume that the input sources are for specified standard]:standard:(c90 c89 iso9899\:1990 iso9899\:199409 c99 iso9899\:1999 c11 iso9899\:2011 gnu90 gnu89 gnu99 gnu11 c++98 c++03 gnu++98 gnu++03 c++11 gnu++11 c++1y gnu++1y c++14 gnu++14 c++1z gnu++1z c++17 iso9899\:2017 gnu++17 c++2a gnu++2a)'
  '-symbolic[bind references to global symbols when building a shared object]'
  '--sysroot=-[use <directory> as the root directory for headers and libraries]:directory:_files -/'
  '--target-help[display target specific command line options]'
  '-time[time the execution of each subprocess]'
  {-traditional-cpp,--traditional-cpp}"[use traditional preprocessor]"
  {-trigraphs,--trigraphs}"[process trigraph sequences]"
  '-T[specify linker script]:linker script:_files'
  "-undef[do not predefine system specific and gcc specific macros]"
  '*-u[pretend symbol to be undefined]:symbol:'
  "--user-dependencies[print user dependencies]"
  {'*-U-','*--undefine-macro='}'[undefine a macro]:undefine macro:'
  '-version[display the compiler'\''s version]'
  '--version[display version information]'
  '-V[specify compiler version]:compiler version:'
  {-v,--verbose}'[enable verbose output]'
  '*-Wa,-[pass arguments to the assembler]:assembler option:'
  '--warn--[enable the specified warning]:warning:->warning'
  '*-Werror=-[treat specified warning as error (or all if none specified)]::warning:->warning'
  '-Wfatal-errors[exit on the first error occurred]'
  '*-Wl,-[pass arguments to the linker]:linker option:'
  {-w,--no-warnings}'[suppress warnings]'
  '*-Wp,-[pass arguments to the preprocessor]:preprocessor option:'
  "--write-dependencies[write a depfile containing user and system dependencies]"
  "--write-user-dependencies[write a depfile containing user dependencies]"
  '*-Xassembler[pass argument to the assembler]:assembler option:'
  '*-Xlinker[pass argument to the linker]:linker option:'
  '*-Xpreprocessor[pass argument to the preprocessor]:preprocessor option:'
  '-x[specify the language of the following input files]:input file language:('"$languages"')'
)

# not meant for end users
#'-fdisable--pass=-[disables an optimization pass]:range1+range2: '
#'-fdisable-[disables an optimization pass]'
#'-fenable--pass=-[enables an optimization pass]:range1+range2: '
#'-fenable-[enables an optimization pass]'
#'-fdump-<type>[dump various compiler internals to a file]'

args+=($warnings)

# How to mostly autogenerate the above stuff:
# joinhelplines() { sed '$!N;s/^\(  -.*\)\n  \s*\([^-]\)/\1 \2/;P;D' }
# gcc-x86() { gcc --help=target,\^undocumented | joinhelplines | joinhelplines }
# compdef _gnu_generic gcc-x86
# printf '%s\n' ${(onq-)_args_cache_gcc_x86}
# You might want to add r:|[_-]=* to the -M option
_arguments -C -M 'L:|-{fWm}no-=-{fWm} r:|=*' \
  "$args[@]" \
  "$args2[@]" && ret=0

case "$state" in
dump)
  local -a dump_values=(
    'A[verbose assembly output]'
    'D[macro definitions and normal output]'
    'I[include directives and normal output]'
    'J[after last jump optimization]'
    'L[after loop optimization]'
    'M[only macro definitions]'
    'N[macro names]'
    'R[after second instruction scheduling pass]'
    'S[after first instruction scheduling pass]'
    'a[all dumps]'
    'c[after instruction combination]'
    'd[after delayed branch scheduling]'
    'f[after flow analysis]'
    'g[after global register allocation]'
    'j[after jump optimization]'
    'k[after conversion from registers to stack]'
    'l[after local register allocation]'
    'm[print memory usage statistics]'
    'p[annotate assembler output]'
    'r[after RTL generation]'
    's[after CSE]'
    't[after second CSE pass]'
    'x[only generate RTL]'
    'y[debugging information during parsing]'
  )
  _values -s '' 'dump information' $dump_values && ret=0
  ;;
dependencies)
  local -a dependencies=(
    "D:generate make dependencies and compile"
    "G:treat missing header files as generated"
    "M:only user header files"
    "MD:output to file"
    "P:generate phony targets for all headers"
    "V:use NMake/Jom format for the depfile"
  )
  _describe dependencies dependencies && ret=0
  ;;
library)
  # TODO: base this list on the output of clang -Wl,-v
  local -a library_path=(
    "/usr/lib"
    "/usr/local/lib"
    "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/lib"
  )
  # Add directories from -L options
  for ((i = 2; i < $#words; i++)); do
    if [[ "$words[i]" = -L ]]; then
      ((i++))
      library_path+=("$words[i]")
    elif [[ "$words[i]" = -L* ]]; then
      library_path+=("${words[i]##-L}")
    fi
  done
  _wanted libraries expl library \
      compadd - $library_path/lib*.(a|so*|dylib)(:t:fr:s/lib//) && ret=0
  ;;
rundir)
  compset -P '*:'
  compset -S ':*'
  _files -/ -S/ -r '\n\t\- /:' "$@" && ret=0
  ;;
help)
  _values -s , 'help' \
    optimizers warnings target params common \
    c c++ objc objc++ lto ada adascil adawhy fortran go java \
    {\^,}undocumented {\^,}joined {\^,}separate \
  && ret=0
  ;;
dirtodir)
  compset -P '*='
  _files -/ && ret=0
  ;;
commafiles)
  compset -P '*,'
  _files && ret=0
  ;;
framework)
  local -a framework_path frameworks
  local path i

  framework_path=(
    /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks
  )

  # Add directories from -F options
  for ((i = 2; i < $#words; i++)); do
    if [[ "$words[i]" = -F ]]; then
      ((i++))
      framework_path+=("$words[i]")
    elif [[ "$words[i]" = -F* ]]; then
      framework_path+=("${words[i]##-F}")
    fi
  done

  for path in $framework_path; do
    frameworks+=($path/*.framework(:t:r))
  done

  _wanted frameworks expl framework compadd -a frameworks && ret=0
  ;;
warning)
  local -a warning_names
  for warning in $warnings; do
    if [[ "$warning" = (#b)-W([^=\[]##)[^\[]#\[(*)\]* ]]; then
      warning_names+=("$match[1]:$match[2]")
    fi
  done
  _describe warning warning_names && ret=0
  ;;
arch)
  _wanted cputypes expl "CPU type" compadd -a arch && ret=0
  ;;
archgeneric)
  arch+=(generic)
  _wanted cputypes expl "CPU type" compadd -a arch && ret=0
  ;;
esac

return ret


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^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-22  2:28   ` Jacob Gelbman
  2021-03-22  2:29     ` Jacob Gelbman
@ 2021-03-22 15:18     ` Jun. T
  2021-03-31 12:31       ` Oliver Kiddle
  1 sibling, 1 reply; 9+ messages in thread
From: Jun. T @ 2021-03-22 15:18 UTC (permalink / raw)
  To: zsh-workers

Does anyone know a way to prevent '--' from being split in 'partial word completion'?

Suppose a cmd accept --baz and -foo-bar as options, and match-spec
r:|-=* r:|=*
is in use. Then 'cmd --b<TAB>' will offer both options.

Is it possible to complete -foo-bar for -f-b<TAB> but only --baz for 'cmd --b<TAB>'?
(this is ralted with [2] below; [1] is cosmetic)

[1]
> 2021/03/22 11:28, Jacob Gelbman <gelbman@gmail.com> wrote:
> 
>> On Mar 18, 2021, at 11:51 PM, Jun T <takimoto-j@kba.biglobe.ne.jp> wrote:
>> 
>> I don't have any detailed knowledge of how Apple's command line tools work,
>> but probably it would better to use the output of 'xcrun --show-sdk-path' instead of 
>> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk.
> 
> I would use use clang -Wl,-v but it could be a bit tricky to get it to cache correctly, so I left that one be for now.

On one of my Mac, in which Xcode.app is installed, 'xcrun --show-sdk-path' gives
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
and not only Xcode but also clang invoked from the command line uses this directory.

[2]
>>> I removed the matchspec "r:|[_-]=*" from the _arguments call because there were certain options where I would try to complete them, and they positioned the cursor elsewhere unexpectedly. for example, I wrote "clang --opt<tab>" and after it completed up until --optimiz, it positioned me on the second - when I expected to be at the end of the fully completed option, --optimize=. also it didn't fully complete, it left it at --optimiz.
>> 
>> I can't reproduce your problem.
>> The matcher 'r:|[_-]=*' is quite useful and better not to be removed since it allows
>> gcc -fd-s-l<TAB>
>> to be completed to
>> gcc -fdiagnostics-show-location=
>> 
> 
> I miswrote how to reproduce it. You type --opti<tab>, not --opt<tab>, then you'll see it position the cursor -<here>-optimiz. This sort of thing is especially annoying if you bind tab to expand-or-complete-prefix.

But hitting a few more TABs will give you --optimize.

It may be annoying for you, but I believe there are many users who are accustomed
to using 'partial word completion' and removing it is not a good idea.

Match-spec 'r:|[_-][^-]=* r:|=*' may work better but not perfect.




^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-22 15:18     ` Jun. T
@ 2021-03-31 12:31       ` Oliver Kiddle
  2021-03-31 14:53         ` Jun. T
  0 siblings, 1 reply; 9+ messages in thread
From: Oliver Kiddle @ 2021-03-31 12:31 UTC (permalink / raw)
  To: Jun. T; +Cc: zsh-workers

On 23 Mar, "Jun. T" wrote:
> Does anyone know a way to prevent '--' from being split in 'partial word completion'?

It is possible if you check for a -- in $PREFIX and don't add the other
matches when it is found. That might subvert approximate completion,
however. It ought to be possible with matching control. It is likely
more useful to note the limitation in the BUGS file than to try some
hack for gcc completion. Mostly, it is rare to have long options
starting with both -- and -.

The || forms seem hopeful at first sight because we want to map the gap
to the left of a - but to the right of anything to *. But the ranchor
only needs to match the trial completion string so that doesn't work. I
think the || forms were added in an attempt to handle CamelCase but they
don't entirely work for that. 'l:[^-]||-=*' seems to be able to add
extra characters whether there is no - in either the candidate or on the
command-line. That can't be right.

'r:[^-]|-=* r:|=*' is also close but the character matching [^-] is not
treated as an anchor so it can be mapped to anything.

Was this the only outstanding issue for the contributed _gcc update?
What's the status otherwise?

I've briefly looked at the changes and it looks good to me. It does add
a commented out line that assigns args2 without the file glob. That
serves no useful purpose, was probably debug that got left in and should
be stripped.

Oliver


^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-31 12:31       ` Oliver Kiddle
@ 2021-03-31 14:53         ` Jun. T
  2021-03-31 15:06           ` Jun. T
  0 siblings, 1 reply; 9+ messages in thread
From: Jun. T @ 2021-03-31 14:53 UTC (permalink / raw)
  To: zsh-workers

[-- Attachment #1: Type: text/plain, Size: 1726 bytes --]


> 2021/03/31 21:31, Oliver Kiddle <opk@zsh.org> wrote:
> 
> On 23 Mar, "Jun. T" wrote:
>> Does anyone know a way to prevent '--' from being split in 'partial word completion'?
> 
> It is possible if you check for a -- in $PREFIX and don't add the other
> matches when it is found. That might subvert approximate completion,
> however. .... (snip)

Thanks for the analysis.
It seems 'r:|[_-][^-]=* r:|=*' works _slightly_ better, although I don't
know why. Or does this have some bad side effects?

> 2021/03/31 21:31, Oliver Kiddle <opk@zsh.org> wrote:
> 
> Was this the only outstanding issue for the contributed _gcc update?
> What's the status otherwise?

I've been trying to find a reasonable default for library_path.
We need to add /usr/lib/x86_64-linux-gnu on Ubuntu (and Debian?) and
/usr/lib64 and on Fedora/CentOS. Are there any OSs that are known to
use directories other than /usr/{,local/}lib? In the attached _gcc
I use the following for OSTYPE==linux-gnu:

      tmp=$(_call_program library-paths $words[1] -print-multiarch)
      if [[ $tmp != '' && -d /usr/lib/$tmp ]]; then
	library_path+=( /usr/lib/$tmp )
      elif [[ -d /usr/lib64 ]]; then
	library_path+=( /usr/lib64 )
      fi

> It does add
> a commented out line that assigns args2 without the file glob. That
> serves no useful purpose, was probably debug that got left in and should
> be stripped.

OP (Jacob Gelbman) wanted to use the commend-out version, but I argued that
it was not a good idea in a response to him.

Only differences of the attached _gcc from the 2nd version by OP are
the above three points (except for format changes etc.).

I will push this soon unless any problems are found.


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^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: Improvements to the gcc completion script
  2021-03-31 14:53         ` Jun. T
@ 2021-03-31 15:06           ` Jun. T
  2021-03-31 18:37             ` two anchor forms of matching control (was Re: Improvements to the gcc completion script) Oliver Kiddle
  0 siblings, 1 reply; 9+ messages in thread
From: Jun. T @ 2021-03-31 15:06 UTC (permalink / raw)
  To: zsh-workers

[-- Attachment #1: Type: text/plain, Size: 234 bytes --]

Oops, sorry. Please throw away the one attached to the previous post.

> 2021/03/31 23:53、Jun. T <takimoto-j@kba.biglobe.ne.jp>のメール:
> 
> It seems 'r:|[_-][^-]=* r:|=*' works _slightly_ better

No. It doesn't work.


[-- Attachment #2: _gcc --]
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^ permalink raw reply	[flat|nested] 9+ messages in thread

* two anchor forms of matching control (was Re: Improvements to the gcc completion script)
  2021-03-31 15:06           ` Jun. T
@ 2021-03-31 18:37             ` Oliver Kiddle
  0 siblings, 0 replies; 9+ messages in thread
From: Oliver Kiddle @ 2021-03-31 18:37 UTC (permalink / raw)
  To: zsh-workers

"Jun. T" wrote:
> > It seems 'r:|[_-][^-]=* r:|=*' works _slightly_ better
>
> No. It doesn't work.

It's easiest to view matching controls as converting the command-line
into a pattern. [_-][^-] matches in --b at the second char position and
because this is a right anchor, that's converted to -*-b* (second * is
from cursor position) which in turn matches -foo-bar or --baz.

I'm still inclined to think that 'r:[^-]||-=*' ought to work. Why that
allows --b to match -foo-bar is a mystery to me. 'r:[^-]||-=X' does not
allow it to match -X-b. In general, I wonder if there is some subtlty to
the single * not matching anchors that I've missed.

From experimenting, it would seem that lanchor only needs to match the
trial completion. This is documented for ranchor with l: but it could
be more explicit. I get the impression that the intention at least is
that where * rather than ** is used on the rhs, it is only the ranchor
that it won't insert for r: and lanchor for l:. Again this could be more
explicit in the documentation. The documentation patch also covers that
but this is questionable because, assuming I've understood the intent,
it is most definitely buggy.

The one use of this by Sven was 'r:[^ A-Z0-9]||[ A-Z0-9]=*' 'r:|=*' for
camel case and I think that reflects what it was intended to support.
That allows anything before an initial uppercase character including
other uppercase characters. 'r:|[:upper:]=* r:|=*' tends to work better
in practice but also has quirks (consecutive uppercase)

A good test pattern is
  compadd -M 'r:[A-N]||[O-Z]=* b:=*' ABCDEFGHIJKLMNOPQRSTUVWXYZ
And then various two letter combinations on the command-line. Quite a
few combinations produce results that I can't explain.

Oliver

diff --git a/Doc/Zsh/compwid.yo b/Doc/Zsh/compwid.yo
index 0b98d07b2..3e86d3b42 100644
--- a/Doc/Zsh/compwid.yo
+++ b/Doc/Zsh/compwid.yo
@@ -959,6 +959,9 @@ As tt(l), tt(L), tt(b) and tt(B), with the difference that the command
 line and trial completion patterns are anchored on the right side.
 Here an empty var(ranchor) and the tt(e) and tt(E) forms force the
 match to the end of the command line or trial completion string.
+
+In the form where var(lanchor) is given, the var(lanchor) only needs
+to match the trial completion string.
 )
 item(tt(x:))(
 This form is used to mark the end of matching specifications:
@@ -1022,8 +1025,10 @@ any number of characters in the trial completion. In this case the
 pattern must be anchored (on either side); in the case of a single
 star, the var(anchor) then determines how much of the trial completion
 is to be included DASH()- only the characters up to the next appearance of
-the anchor will be matched. With two stars, substrings matched by the
-anchor can be matched, too.
+the anchor will be matched. With two stars, substrings matched by
+the anchor can be matched, too. In the forms that include two
+anchors, `tt(*)' can match characters from the additional anchor
+DASH()- var(lanchor) with tt(r) or var(ranchor) with tt(l).
 
 Examples:
 


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2021-03-31 18:37 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-03-12  4:07 Improvements to the gcc completion script Jacob Gelbman
2021-03-19  3:51 ` Jun T
2021-03-22  2:28   ` Jacob Gelbman
2021-03-22  2:29     ` Jacob Gelbman
2021-03-22 15:18     ` Jun. T
2021-03-31 12:31       ` Oliver Kiddle
2021-03-31 14:53         ` Jun. T
2021-03-31 15:06           ` Jun. T
2021-03-31 18:37             ` two anchor forms of matching control (was Re: Improvements to the gcc completion script) Oliver Kiddle

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