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

MOUSEKEY_ENABLE = yes    # Mouse keys
RGBLIGHT_ENABLE = yes    # Enable WS2812 RGB underlight.
OLED_ENABLE     = yes
OLED_DRIVER     = SSD1306
LTO_ENABLE      = yes
[Keyboard] Code consistency updates for CRKBD (#15779) Co-authored-by: Drashna Jaelre <drashna@live.com> 2022-01-22 05:57:03 +00:00			`MOUSEKEY_ENABLE = yes # Mouse keys`
			`RGBLIGHT_ENABLE = yes # Enable WS2812 RGB underlight.`
			`OLED_ENABLE = yes`
			`OLED_DRIVER = SSD1306`
			`LTO_ENABLE = yes`