```make
# Include variables and rules generated by menuconfig
-include $(NPC_HOME)/include/config/auto.conf
-include $(NPC_HOME)/include/config/auto.conf.cmd
# 注意,这些
ifeq ($(CONFIG_WAVEFORM), y)
VERILATOR_CFLAGS += --trace
endif
```
对CONFIG环境变量的判断一定要放在 -include 后面,否则会无法识别