Make is a programming utility used to automate the process of recompiling multiple interdependent source files into an output file (the goal). The Make program uses rules of inference to make the goal. The rules for making the goal are explicitly stated in an input file called the Makefile, and implicitly determined from builtin rules. Normally, the Makefile for a goal is written so that the only thing that needs to be done to recompile newly modified source files is to run the Make program.