From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.tuxdriver.com (charlotte.tuxdriver.com [70.61.120.58]) by dpdk.org (Postfix) with ESMTP id BB83FB368 for ; Thu, 31 Jul 2014 21:58:12 +0200 (CEST) Received: from uucp by smtp.tuxdriver.com with local-rmail (Exim 4.63) (envelope-from ) id 1XCwWK-0000R0-KB; Thu, 31 Jul 2014 16:00:12 -0400 Received: from linville-x1.hq.tuxdriver.com (localhost.localdomain [127.0.0.1]) by linville-x1.hq.tuxdriver.com (8.14.8/8.14.6) with ESMTP id s6VJwUQg007304; Thu, 31 Jul 2014 15:58:30 -0400 Received: (from linville@localhost) by linville-x1.hq.tuxdriver.com (8.14.8/8.14.8/Submit) id s6VJwUpW007303; Thu, 31 Jul 2014 15:58:30 -0400 Date: Thu, 31 Jul 2014 15:58:30 -0400 From: "John W. Linville" To: Bruce Richardson Message-ID: <20140731195829.GG17560@tuxdriver.com> References: <1406665466-29654-1-git-send-email-nhorman@tuxdriver.com> <20140730210920.GB6420@localhost.localdomain> <20140731131351.GA20718@hmsreliant.think-freely.org> <5766264.li3nkTmgY6@xps13> <20140731143228.GB20718@hmsreliant.think-freely.org> <20140731181032.GC20718@hmsreliant.think-freely.org> <20140731183631.GC6420@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140731183631.GC6420@localhost.localdomain> User-Agent: Mutt/1.5.23 (2014-03-12) Cc: dev@dpdk.org Subject: Re: [dpdk-dev] [PATCH 0/2] dpdk: Allow for dynamic enablement of some isolated features X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 31 Jul 2014 19:58:13 -0000 On Thu, Jul 31, 2014 at 11:36:32AM -0700, Bruce Richardson wrote: > With regards to the general approach for runtime detection of software > functions, I wonder if something like this can be handled by the > packaging system? Is it possible to ship out a set of shared libs > compiled up for different instruction sets, and then at rpm install > time, symlink the appropriate library? This would push the whole issue > of detection of code paths outside of code, work across all our > libraries and ensure each user got the best performance they could get > form a binary? > Has something like this been done before? The building of all the > libraries could be scripted easy enough, just do multiple builds using > different EXTRA_CFLAGS each time, and move and rename the .so's after > each run. I'm not aware of a package that does anything like that. It probably is possible, but I imagine that it would provoke a lot of debate and consternation in FESCO... -- John W. Linville Someday the world will need a hero, and you linville@tuxdriver.com might be all we have. Be ready.