15.6) Example of a Makefile

prog: file1.o file2.o file3.o
        g++ file1.o file2.o file3.o -o prog
file1.o: file1.cpp file1.hpp
        g++ -c file1.cpp
file2.o: file2.cpp file2.hpp
        g++ -c file2.cpp
file3.o: file3.cpp file3.hpp
        g++ -c file3.cpp
clean:
        rm -f file1.o file2.o file3.o
veryclean: clean
        rm -f prog

Rules start with a target (the thing we are trying to build), then a colon, then a space-separated list of dependencies (the things from which the target is built)
Commands to execute appear on lines underneath
Each command MUST begin with a single tab character (NOT spaces!)
Rules don't have to be compiler-related; the clean and veryclean targets in the example above are used for clean-up operations, removing the object code files in the case of clean or the object code and executable in the case of veryclean
Make will display each command that it executes, unless that command begins with the @ symbol

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