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## Arguments to Specify the Makefile

The way to specify the name of the makefile is with the ``-f'` or ``--file'` option (``--makefile'` also works). For example, ``-f altmake'` says to use the file ``altmake'` as the makefile.

If you use the ``-f'` flag several times and follow each ``-f'` with an argument, all the specified files are used jointly as makefiles.

If you do not use the ``-f'` or ``--file'` flag, the default is to try ``GNUmakefile'`, ``makefile'`, and ``Makefile'`, in that order, and use the first of these three which exists or can be made (see section Writing Makefiles).

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