qmk_firmware/keyboards/yampad/rules.mk

# Build Options
#   change yes to no to disable
#
AUDIO_ENABLE = no           # Audio output
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
COMMAND_ENABLE = no         # Commands for debug and configuration
CONSOLE_ENABLE = no         # Console for debug
DEBOUNCE_TYPE = sym_eager_pk
EXTRAKEY_ENABLE = no        # Audio control and System control
LTO_ENABLE = yes            # Link time optimise, reduce firmware size
MOUSEKEY_ENABLE = no        # Mouse keys
NKRO_ENABLE = yes           # Enable N-Key Rollover
OLED_DRIVER = SSD1306
OLED_ENABLE = yes
RGBLIGHT_ENABLE = yes       # Enable keyboard RGB underglow