ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
OPT_DEFS += -DSPLIT_KEYBOARD
QUANTUM_SRC += $(QUANTUM_DIR)/split_common/split_flags.c \
- $(QUANTUM_DIR)/split_common/split_util.c \
- $(QUANTUM_DIR)/split_common/i2c.c \
- $(QUANTUM_DIR)/split_common/serial.c
+ $(QUANTUM_DIR)/split_common/split_util.c
+ QUANTUM_LIB_SRC += $(QUANTUM_DIR)/split_common/i2c.c
+ QUANTUM_LIB_SRC += $(QUANTUM_DIR)/split_common/serial.c
endif