update hardknott for kernel and add some tools in image

guowenxue

2022-10-08 7a514684de3e29cda5ef8eccf84fb7dfb24583ae

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APP_NAME=hello
 
${APP_NAME}:
    ${CC} -o $@ $@.c
 
.PHONY: clean
 
clean:
    rm -rf ${APP_NAME}