qmk_firmware/keyboards/crkbd/keymaps/snowe/rules.mk

BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
CONSOLE_ENABLE = no         # Console for debug(+400)
COMMAND_ENABLE = no         # Commands for debug and configuration
NKRO_ENABLE = no            # Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
AUDIO_ENABLE = no           # Audio output on port C6
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
RGBLIGHT_ENABLE = no       # Enable WS2812 RGB underlight.
LEADER_ENABLE = no
MIDI_ENABLE = no            # MIDI controls
UNICODE_ENABLE = no         # Unicode
BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
SWAP_HANDS_ENABLE = no      # Enable one-hand typing
RGBLIGHT_TWINKLE = no
OLED_ENABLE = yes
OLED_DRIVER = SSD1306
RGB_MATRIX_ENABLE = yes

OCEAN_DREAM_ENABLE = yes
LUNA_ENABLE = no # disabled so travis build succeeds

# if firmware size over limit, try this option
CFLAGS += -flto

WPM_ENABLE = yes