Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!att!cbnews!res
From: res@cbnews.ATT.COM (Robert E. Stampfli)
Newsgroups: gnu.gcc
Subject: gcc -ansi and predefined macros
Keywords: macros ansi option
Message-ID: <7561@cbnews.ATT.COM>
Date: 18 Jun 89 23:56:13 GMT
Distribution: na
Organization: AT&T Bell Laboratories
Lines: 9

Could someone please explain why certain macros such as "unix" and the
machine designator (e.g. "vax"), which are normally defined by the compiler,
are explicitly left undefined when using the -ansi option?  I know this fact
is noted in the documentation.  I am just curious as to why.

Thanks,
Rob Stampfli
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