From owner-freebsd-questions@FreeBSD.ORG  Wed Aug  2 13:42:24 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id AD3AB16A4DE
	for <freebsd-questions@freebsd.org>;
	Wed,  2 Aug 2006 13:42:24 +0000 (UTC) (envelope-from cswiger@mac.com)
Received: from pi.codefab.com (pi.codefab.com [199.103.21.227])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 44B0A43D60
	for <freebsd-questions@freebsd.org>;
	Wed,  2 Aug 2006 13:42:22 +0000 (GMT) (envelope-from cswiger@mac.com)
Received: from localhost (localhost [127.0.0.1])
	by pi.codefab.com (Postfix) with ESMTP id 93E9B5E8B;
	Wed,  2 Aug 2006 09:42:21 -0400 (EDT)
X-Virus-Scanned: amavisd-new at codefab.com
Received: from pi.codefab.com ([127.0.0.1])
	by localhost (pi.codefab.com [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id UgNVoUAV2HL7; Wed,  2 Aug 2006 09:42:20 -0400 (EDT)
Received: from [192.168.1.251] (pool-68-161-117-245.ny325.east.verizon.net
	[68.161.117.245])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(No client certificate requested)
	by pi.codefab.com (Postfix) with ESMTP id 590815E7C;
	Wed,  2 Aug 2006 09:42:20 -0400 (EDT)
Message-ID: <44D0ABB1.9070307@mac.com>
Date: Wed, 02 Aug 2006 09:42:09 -0400
From: Chuck Swiger <cswiger@mac.com>
User-Agent: Thunderbird 1.5.0.5 (Windows/20060719)
MIME-Version: 1.0
To: Lorin Lund <wbs@infowest.com>
References: <ef10de9a0608011723y770687f7me0b4cacd176fe4d1@mail.gmail.com>
	<44D06735.40603@infowest.com>
In-Reply-To: <44D06735.40603@infowest.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-questions@freebsd.org
Subject: Re: gcc: cpp pre-defined variables
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 02 Aug 2006 13:42:24 -0000

Lorin Lund wrote:
> How can I find all the variables that are pre-defined in the pre-processor.
> 
> Do these come from a configuration file? Or are the compiled in to cpp when
> it is ported to a platform?

Something like:

	touch test.h; cpp -dM test.h

...will show you all of the predefined macros.  These are compiled into the 
compiler when the toolchain is built.

-- 
-Chuck