>arm-none-eabi-gcc --help=undocument
>arm-none-eabi-gcc --help=undocument
>arm-none-eabi-gcc --help=undocument The following options are not documented: --preprocess This option lacks documentation. -E This option lacks documentation. -MD_ This option lacks documentation. -MMD_ This option lacks documentation. -Wc++0x-compat Same as -Wc++11-compat. Use the latter option instead. -Wimport This option lacks documentation. -Wlarger-than- Same as -Wlarger-than=. Use the latter option instead. -Wpsabi This option lacks documentation. -cpp= This option lacks documentation. -fallow-leading-underscore This option lacks documentation. -faux-classpath This option lacks documentation. -fbuilding-libgcc This option lacks documentation. -fbuiltin-printf Ignored. -fgnat-encodings=[all|gdb|minimal] Select the balance between GNAT encodings and standard DWARF emitted in the debug information -fkeep-gc-roots-live This option lacks documentation. -fsaw-java-file This option lacks documentation. -fsource-filename= This option lacks documentation. -ftemplate-depth- Same as -ftemplate-depth=. Use the latter option instead. -fuse-linker-plugin This option lacks documentation. -gant Catch typos. -lang-asm This option lacks documentation. -mapcs This option lacks documentation. -mapcs-stack-check This option lacks documentation. -mflip-thumb Switch ARM/Thumb modes on alternating functions for compiler testing. -mhard-float Same as -mfloat-abi=. Use the latter option instead. -msoft-float Same as -mfloat-abi=. Use the latter option instead. -std=c++0x Deprecated in favor of -std=c++11. Same as -std=c++11. -std=c++17 Same as -std=c++1z. Use the latter option instead. -std=c++1y Deprecated in favor of -std=c++14. Same as -std=c++14. -std=gnu++0x Deprecated in favor of -std=gnu++11. Same as -std=gnu++11. -std=gnu++17 Same as -std=gnu++1z. Use the latter option instead. -std=gnu++1y Deprecated in favor of -std=gnu++14. Same as -std=gnu++14.