TARGET_PREBUILT_KERNEL
这个环境变量设置了吗，我的计算机没有配置了，没法帮你测试，总而言之要找一找类似这样的配置
https://github.com/LineageOS/android_device_google_dragon/blob/ad0267e01beabb9fd6d5e45704801631e3f2acae/device.mk#L35
#prebuilt kernel config
ifeq ($(TARGET_PREBUILT_KERNEL),)
LOCAL_KERNEL := device/google/dragon/Image.fit
else
LOCAL_KERNEL := $(TARGET_PREBUILT_KERNEL)
endif
PRODUCT_COPY_FILES := \
