qmk_firmware/keyboards/xd004/v1/rules.mk

# MCU name
MCU = atmega16u2


# Boot Section Size in *bytes*
#   Teensy halfKay   512
#   Teensy++ halfKay 2048
#   Atmel DFU loader 4096
#   LUFA bootloader  4096
#   USBaspLoader     2048
OPT_DEFS += -DBOOTLOADER_SIZE=4096
BOOTLOADER = atmel-dfu


# Build Options
BOOTMAGIC_ENABLE = lite       # Virtual DIP switch configuration
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
BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality
MIDI_ENABLE = no            # MIDI controls
AUDIO_ENABLE = no           # Audio output on port C6
UNICODE_ENABLE = no         # Unicode
BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
RGBLIGHT_ENABLE = no        # Enable WS2812 RGB underlight.
SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
SPACE_CADET_ENABLE = no
# Saves about 5% of space:
LINK_TIME_OPTIMIZATION_ENABLE = yes

#LAYOUTS = ortho_1x4