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Newsgroups: comp.os.msdos.djgpp
Subject: Re: DJGGP 2.05 upgrade problems.
Date: Fri, 12 Jun 2015 21:35:17 +0200
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Am 12.06.2015 um 09:28 schrieb Eli Zaretskii (eliz AT gnu DOT org):

> It's usually best to invoke the same GCC command that was used to
> compile the offending source file, but with -c replaced with -E and
> with output redirected to some *.ii file, and then examine the
> preprocessed source near the problematic place.

While a method like that is needed for many compilers, GCC has offered a 
considerably better one since a long time ago: the "-save-temps" option. 
  That will save all the intermediate files, including preprocessor 
output, of a compile run.  I.e. just add -save-temps (or, these days, 
possibly -save-temps=obj) to your CFLAGS, and go.