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Path: utzoo!linus!decvax!minow
From: minow@decvax.UUCP (Martin Minow)
Newsgroups: net.unix,net.lang.c,net.unix-wizards
Subject: Re: Standardized predefined CPP symbols
Message-ID: <32@decvax.UUCP>
Date: Tue, 10-Jul-84 22:31:53 EDT
Article-I.D.: decvax.32
Posted: Tue Jul 10 22:31:53 1984
Date-Received: Thu, 12-Jul-84 01:11:13 EDT
References: <297@watdcsu.UUCP>
Organization: DEC UNIX Engineering Group
Lines: 19

For what it's worth, Decus C predefines the following symbols:

decus, pdp11
nomacarg	The Decus C preprocessor doesn't support #define x(args)
rsx, rt11	As appropriate
_FILE_		Source file name	(might be __FILE__)
_LINE_		Current line number	(might be __LINE__)
_DATE_		Compilation date in ctime() format (without the trailing \n)

Vax-11C predefines the following symbols:

vax, vax11c, vms

Moral:  programs may need to know the target machine and operating system,
along with any unique quirks of the compiler.

Martin Minow
decvax!minow