GNU Make Manual Version 4.4.1

The make utility automatically determines which pieces of a large program need to berecompiled, and issues commands to recompile them. This manual describes GNU make,which was implemented by Richard Stallman and Roland McGrath. Development sinceVersion 3.76 has been handled by Paul D. Smith.GNU make conforms to section 6.2 of IEEE Standard 1003.2-1992 (POSIX.2).Our examples show C programs, since they are most common, but you can use makewith any programming language whose compiler can be run with a shell command. Indeed,make is not limited to programs. You can use it to describe any task where some files mustbe updated automatically from others whenever the others change.