(make.info.gz) Preparing

 
 Preparing and Running Make
 ==========================
 
    To prepare to use `make', you must write a file called the
 "makefile" that describes the relationships among files in your program
 and provides commands for updating each file.  In a program, typically,
 the executable file is updated from object files, which are in turn
 made by compiling source files.
 
    Once a suitable makefile exists, each time you change some source
 files, this simple shell command:
 
      make
 
 suffices to perform all necessary recompilations.  The `make' program
 uses the makefile data base and the last-modification times of the
 files to decide which of the files need to be updated.  For each of
 those files, it issues the commands recorded in the data base.
 
    You can provide command line arguments to `make' to control which
 files should be recompiled, or how.   How to Run `make' Running.

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