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What Gets Cleaned

The GNU Makefile Standards specify a number of different clean rules. See See Standard Targets for Users.

Generally the files that can be cleaned are determined automatically by Automake. Of course, Automake also recognizes some variables that can be defined to specify additional files to clean. These variables are MOSTLYCLEANFILES, CLEANFILES, DISTCLEANFILES, and MAINTAINERCLEANFILES.

As the GNU Standards aren't always explicit as to which files should be removed by which target, we've adopted a heuristic which we believe was first formulated by François Pinard:

We recommend that you follow this same set of heuristics in your