qmk_firmware/keyboards/keebio/quefrency/rules.mk

# MCU name
MCU = atmega32u4

BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
MOUSEKEY_ENABLE = no        # Mouse keys
EXTRAKEY_ENABLE = yes       # Audio control and System control
CONSOLE_ENABLE = no         # Console for debug
COMMAND_ENABLE = no         # Commands for debug and configuration
NKRO_ENABLE = no            # Enable N-Key Rollover
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
AUDIO_ENABLE = no           # Audio output
RGBLIGHT_ENABLE = yes       # Enable WS2812 RGB underlight.

SPLIT_KEYBOARD = yes

DEFAULT_FOLDER = keebio/quefrency/rev1
LTO_ENABLE = yes