$ gcc --help=joined 連続したテキストに続く等号の後に現れる引数を取るオプションを表示 The following options take joined arguments: --assert= Same as -A. Use the latter option instead. --define-macro= Same as -D. Use the latter option instead. --dump= Same as -d. Use the latter option instead. --help=<class> Display descriptions of a specific class of options. <class> is one or more of optimizers, target, warnings, undocumented, params. --imacros= Same as -imacros. Use the latter option instead. --include-directory-after= Same as -idirafter. Use the latter option instead. ︙ -mstringop-strategy= Chose strategy to generate stringop using. -mtls-dialect= Use given thread-local storage dialect. -mtune-ctrl= Fine grain control of tune features. -mtune= Schedule code for given CPU. -mveclibabi= Vector library ABI to use. -o <file> Place output into <file>. Known assembler dialects (for use with the -masm= option): att intel Known ABIs (for use with the -mabi= option): ms sysv Known code models (for use with the -mcmodel= option): 32 kernel large medium small Valid arguments to -mfpmath=: 387 387+sse 387,sse both sse sse+387 sse,387 Known indirect branch choices (for use with the -mindirect-branch=/-mfunction-return= options): keep thunk thunk-extern thunk-inline Known data alignment choices (for use with the -malign-data= option): abi cacheline compat Known vectorization library ABIs (for use with the -mveclibabi= option): acml svml Known address mode (for use with the -maddress-mode= option): long short Known preferred register vector length (to use with the -mprefer-vector-width= option) 128 256 512 none Known stack protector guard (for use with the -mstack-protector-guard= option): global tls Valid arguments to -mstringop-strategy=: byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop vector_loop Known TLS dialects (for use with the -mtls-dialect= option): gnu gnu2 $