kernelconfig_penguin
CONFIG_ARC_TUNE_MCPU is not available for the default architecture x86.
Result is shown for architecture arc

Override default -mcpu compiler flag

configname: CONFIG_ARC_TUNE_MCPU

Linux Kernel Configuration
└─> ARC Architecture Configuration
└─> ARC CPU Configuration
└─> Override default -mcpu compiler flag

Override default -mcpu=xxx compiler flag (which is set depending on
the ISA version) with the specified value.
NOTE: If specified flag isn't supported by current compiler the
ISA default value will be used as a fallback.