Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262375AbUKDULA (ORCPT ); Thu, 4 Nov 2004 15:11:00 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262381AbUKDUH5 (ORCPT ); Thu, 4 Nov 2004 15:07:57 -0500 Received: from mailout.stusta.mhn.de ([141.84.69.5]:30219 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S262434AbUKDUDi (ORCPT ); Thu, 4 Nov 2004 15:03:38 -0500 Date: Thu, 4 Nov 2004 21:03:03 +0100 From: Adrian Bunk To: Ian Hastie Cc: Valdis.Kletnieks@vt.edu, Adam Heath , Chris Wedgwood , Christoph Hellwig , Timothy Miller , Linux Kernel Mailing List Subject: Re: support of older compilers Message-ID: <20041104200303.GO4013@stusta.de> References: <41894779.10706@techsource.com> <200411041704.iA4H4sdZ014948@turing-police.cc.vt.edu> <200411041936.27100.ianh@iahastie.local.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200411041936.27100.ianh@iahastie.local.net> User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1708 Lines: 43 On Thu, Nov 04, 2004 at 07:36:26PM +0000, Ian Hastie wrote: > On Thursday 04 Nov 2004 17:04, Valdis.Kletnieks@vt.edu wrote: > > On Thu, 04 Nov 2004 10:50:38 CST, Adam Heath said: > > > I didn't deny the speed difference of older and newer compilers. > > > > > > But why is this an issue when compiling a kernel? How often do you > > > compile your kernel? > > > > If you're working on older hardware (note the number of people on this > > list still using 500mz Pentium3 and similar), and a kernel developer, the > > difference between 2 hours to build a kernel and 4 hours to build a > > kernel matters quite a bit. > > How often is it necessary to do a full rebuild of the kernel? If the > dependencies in the make system work properly then only the amended parts > should be recompiled. That'd be a much bigger time saving than just using an > older compiler. As soon as you touch include files, a full recompile occurs pretty often because there are some include files pretty every other file depends on (and has to depend on). Well, although I'm doing full kernel compiles sometimes several times a day I'm not that much addicted to compiler speed but I do understand others are. > Ian. cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/