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From: Gene <gene.ressler@gmail.com>
Newsgroups: comp.compilers
Subject: Re: C or Similar Preprocessor for General Use
Date: Thu, 16 Jun 2011 19:03:14 -0700 (PDT)
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Xref: x330-a1.tempe.blueboxinc.net comp.compilers:153

As John says, M4 works fine under Windows. You can also install any of
the several versions of gcc for Windows (see the FAQ) and use the -E
option.  It's not terribly hard to build a simple preprocessor with a
scripting language like Perl.  I have looked at mcpp in the past (see
Source Forge).  It looks pretty good and works on Windows.
http://mcpp.sourceforge.net/download.html