menu "ISO-ANSI C layer" menu "Timezone and Daylight Saving Time" config RT_LIBC_USING_LIGHT_TZ_DST bool "Enable lightweight timezone and daylight saving time" default y if RT_LIBC_USING_LIGHT_TZ_DST config RT_LIBC_TZ_DEFAULT_HOUR int "Set the default local timezone (hour)" range -12 12 default 8 config RT_LIBC_TZ_DEFAULT_MIN int "Set the default local timezone (minute)" range -59 59 default 0 config RT_LIBC_TZ_DEFAULT_SEC int "Set the default local timezone (second)" range -59 59 default 0 endif endmenu endmenu