From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bryan Christ <bryan.christ@hp.com>
Subject: standard OS defines
Date: Wed, 22 Aug 2007 13:35:21 -0500
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does anyone know where i can find a list of standardized OS defines? 
i've come across the list below, but i haven't found an authoritative 
resource convince me these are standard/correct.  even if they are i'm 
sure what i've found is a just a subset of a larger list--but i don't 
know where to look.

__CYGWIN__
__NetBSD__
__OpenBSD__
__linux__
__sun__

also, is there a tool that like getconf that i can use to pipe these 
defines into gcc at compile time?

thanks in advance,
bryan