1、 Output debugging information: makefile file debugging information $(warning "tests" $(mkfile\u path)); makefile file path

At compile time , With the help of printing information , You can understand the compilation process more clearly , Location problem .

cc=gcc

src=hello.c fun.c

mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST)))
 
$(warning "tests" $(mkfile_path))
 
all:
   
	cc $(src) -o hello

clean:
	rm hello