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Implements the Distutils 'config' command, a (mostly) empty command class
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at least they're all named the same, and users always see "config" in the
list of standard commands. Also, this is a good place to put common
configure-like tasks: "try to compile this C code", or "figure out where
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config._cleanNr c C sP ddl m} | �� d}z| �||||� W n |yB d}Y n0 | �� |S )aQ Construct a source file from 'body' (a string containing lines
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and run it through the preprocessor. Return true if the
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('body' probably isn't of much use, but what the heck.)
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preprocesses an empty file -- which can be useful to determine the
symbols the preprocessor and compiler set by default.
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calls it. 'libraries' and 'library_dirs' are used when
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