From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 4699EE00E41; Thu, 28 Apr 2016 23:06:20 -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.analogue-micro.com (mail.analogue-micro.com [217.144.149.242]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id DFB87E00E3D for ; Thu, 28 Apr 2016 23:06:18 -0700 (PDT) Received: by mail.analogue-micro.com (Postfix, from userid 999) id 85C7168A01D; Fri, 29 Apr 2016 07:06:17 +0100 (BST) Received: from zeus.mlbassoc.com (unknown [10.8.0.2]) by mail.analogue-micro.com (Postfix) with ESMTP id ACBAC68A019; Fri, 29 Apr 2016 07:06:16 +0100 (BST) Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by zeus.mlbassoc.com (Postfix) with ESMTP id 4837F674004E; Fri, 29 Apr 2016 08:06:16 +0200 (CEST) To: Paul Eggleton References: <5722E217.40108@mlbassoc.com> <1690881.tSgHQ4Xn3V@peggleto-mobl.ger.corp.intel.com> From: Gary Thomas Message-ID: <5722F9D8.2080202@mlbassoc.com> Date: Fri, 29 Apr 2016 08:06:16 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <1690881.tSgHQ4Xn3V@peggleto-mobl.ger.corp.intel.com> Cc: yocto@yoctoproject.org Subject: Re: Change in override behavior? 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: Fri, 29 Apr 2016 06:06:20 -0000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit On 2016-04-29 07:08, Paul Eggleton wrote: > Hi Gary, > > On Fri, 29 Apr 2016 06:24:55 Gary Thomas wrote: >> I used to be able to use something like this: >> VARIABLE = "xyz" >> and maybe in a .bbappend use >> VARIABLE_mymachine = "xyzzy" >> where 'mymachine' is in OVERRIDES, which resulted in >> VARIABLE = "xyzzy" >> >> This doesn't seem to work the same today, what I get is >> VARIABLE = "xyz" >> VARIABLE_mymachine = "xyzzy" >> >> Has this changed (recently)? Why? How to I make use of overrides? >> >> Note: I'm using the latest Poky master (a9b503b26) updated 2016-04-28 > > When you say this is what you're seeing, how are you checking this? bitbake -e > ? Which part of that output are you looking at? > > You *will* now see VARIABLE_mymachine in bitbake -e output even if "mymachine" > is in OVERRIDES - that's because the overridden values stay in the datastore > instead of a "finalisation" step eliminating them, in order to allow OVERRIDES > to be changed dynamically (possibly multiple times) and still get the > datastore contents you expect. That change was made in the 2.0 release > (jethro). However That should not affect the final value of VARIABLE if > "mymachine" is in OVERRIDES however. Are you sure you are seeing what you > think you're seeing? If so, is the bbappend in fact being applied? Because if > what you describe was really happening then pretty much the entire system > would be broken. I just checked a similar case here and I see the expected > results. Yes, I am using 'bitbake -e | grep ^VARIABLE' to look at this. In my main recipe, I have this: SOME_OTHER_VARIABLE ?= "${MACHINE}" and my .bbappend for that recipe has these lines: SOME_OTHER_VARIABLE_my-target-A = "something-else1" SOME_OTHER_VARIABLE_my-target-B = "something-else2" and local.conf has MACHINE="my-target-B" With Yocto 2.0 (Poky ceeb52a2544) I get this: SOME_OTHER_VARIABLE = "something-else2" SOME_OTHER_VARIABLE_my-target-A = "something-else1" SOME_OTHER_VARIABLE_my-target-B = "something-else2" With today's (Poky a9b503b26) I get this: SOME_OTHER_VARIABLE = "my-target-B" SOME_OTHER_VARIABLE_my-target-A = "something-else1" SOME_OTHER_VARIABLE_my-target-B = "something-else2" I also use this mechanism to set COMPATIBLE_MACHINE a lot and that doesn't seem to be working the same either. Am I doing something incorrectly (and just got away with it for years)? n.b. If you're interested, I can share the .bb/.bbappend files with you privately (I can't put them on the public list) -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------