From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 4C022E007C0; Mon, 27 Oct 2014 12:40:14 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mail.chez-thomas.org (mail.mlbassoc.com [65.100.170.105]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id E3EF9E00796 for ; Mon, 27 Oct 2014 12:40:04 -0700 (PDT) Received: by mail.chez-thomas.org (Postfix, from userid 1998) id 1FB20F811E0; Mon, 27 Oct 2014 13:40:04 -0600 (MDT) Received: from [192.168.1.114] (zeus [192.168.1.114]) by mail.chez-thomas.org (Postfix) with ESMTP id 3CB46F811DC; Mon, 27 Oct 2014 13:40:03 -0600 (MDT) Message-ID: <544E9F93.1050808@mlbassoc.com> Date: Mon, 27 Oct 2014 13:40:03 -0600 From: Gary Thomas User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: Saul Wold , Yocto Project References: <544E77DC.5080408@mlbassoc.com> <544E890A.5000402@linux.intel.com> In-Reply-To: <544E890A.5000402@linux.intel.com> Subject: Re: Is the build system SCM sensitive? X-BeenThere: yocto@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Discussion of all things Yocto Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Oct 2014 19:40:14 -0000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit On 2014-10-27 12:03, Saul Wold wrote: > On 10/27/2014 09:50 AM, Gary Thomas wrote: >> I had a complete build (details probably don't matter) using >> Poky master. I'm working on a fix to one of the core recipes, >> so I made a local branch: >> % git checkout -b fix-python-pygtk master >> I made a single line change in the recipe (removing a line from >> the do_install step). When I then rebuilt the recipe, to my >> surprise, there were more than 450 tasks (73 unique recipes) >> executed :-( >> >> How does this make any sense? unless the build system cares >> that I changed the branch? >> >> n.b. I'm happy to provide more details if necessary. Also, I >> did this twice in two different build trees and saw the same >> strangeness. >> > I think so additional info might be needed here, I am guessing that you are changing pygtk and somehow that is changing some dependency, you might try using bitbake-diffsigs > between the 2 versions. I think I know what triggered this - a recent change in bitbake.conf redefined BUILD_CPP (and others). I had merged this change some six hours before my strange build and had been building many other recipes (also python with a similar set of dependencies) a number of times before I touched the python-pygtk recipe. Some dependency in that recipe set off the rebuild storm that my other recipes had not. So the large number of recipe rebuilds was [probably] warranted, but very unexpected given what I had been doing just prior. Sorry for the noise. Next time I'll try and remember bitbake-diffsigs and figure things out on my own. -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------