From owner-freebsd-hackers  Fri Jan  4 11:21:15 2002
Delivered-To: freebsd-hackers@freebsd.org
Received: from mail12.speakeasy.net (mail12.speakeasy.net [216.254.0.212])
	by hub.freebsd.org (Postfix) with ESMTP id B9E5137B417
	for <freebsd-hackers@FreeBSD.ORG>; Fri,  4 Jan 2002 11:21:09 -0800 (PST)
Received: (qmail 7613 invoked from network); 4 Jan 2002 19:21:08 -0000
Received: from unknown (HELO laptop.baldwin.cx) ([64.81.54.73]) (envelope-sender <jhb@FreeBSD.org>)
          by mail12.speakeasy.net (qmail-ldap-1.03) with SMTP
          for <stephen@math.missouri.edu>; 4 Jan 2002 19:21:08 -0000
Message-ID: <XFMail.020104112055.jhb@FreeBSD.org>
X-Mailer: XFMail 1.4.0 on FreeBSD
X-Priority: 3 (Normal)
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 8bit
MIME-Version: 1.0
In-Reply-To: <3C35F513.2F16AC08@math.missouri.edu>
Date: Fri, 04 Jan 2002 11:20:55 -0800 (PST)
From: John Baldwin <jhb@FreeBSD.org>
To: Stephen Montgomery-Smith <stephen@math.missouri.edu>
Subject: Re: Tell gcc I have a i686
Cc: freebsd-hackers@FreeBSD.ORG, Alfred Perlstein <bright@mu.org>
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-hackers.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-hackers>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-hackers>
X-Loop: FreeBSD.ORG


On 04-Jan-02 Stephen Montgomery-Smith wrote:
> Alfred Perlstein wrote:
>> 
>> * Stephen Montgomery-Smith <stephen@math.missouri.edu> [020104 12:02] wrote:
>> > I want to create a Makefile for a C program that includes some Pentium
>> > II specific inline assembler code.  How do I tell the compiler whether
>> > we are compiling on a i686?
>> >
>> > For Linux, I can do something like this (for gnu-make)
>> > Arch = $(shell arch)
>> > cc ...... -DArch .....
>> >
>> > and inside the program
>> >
>> > #ifdef i686
>> >
>> > But arch doesn't exist on FreeBSD.
>> 
>> Isn't this somewhat trivial?
>> 
>> ARCH=i686
>> CFLAGS+=-D${ARCH}
>> 
>> ?
>> 
> 
> 
> What I want is a makefile that automatically detects whether it is on an
> i686 or not (not for me to tell it so).

This doesn't support a user who wants to compile an app that they want to run
on some other machine. :)  On FreeBSD, you can see if CPUTYPE is set from
make.conf, but it's not required to be set.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message