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From: guy@gorodish.UUCP
Newsgroups: comp.lang.c
Subject: Re: "unix" macro on System V?
Message-ID: <15807@sun.uucp>
Date: Sun, 29-Mar-87 04:45:07 EST
Article-I.D.: sun.15807
Posted: Sun Mar 29 04:45:07 1987
Date-Received: Sun, 29-Mar-87 23:42:20 EST
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> In 4.3BSD Unix C there is a macro called "unix" which may be used to
> control compilation. E.g:
> 
> I do not have access to a system to test this, so I was wondering
> if such a macro (or something similar) exists in System V C?

Berkeley didn't invent this.  AT&T did - specifically, the people at
Bell Labs did.  It dates back to V7.  4BSD, 2BSD, V7, S3, and S5 all
have it; the reason why is that the preprocessor portion of their C
compilers is derived from the preprocessor done at the labs for V7.