From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id E31FCE0083E; Tue, 7 Apr 2015 07:52:26 -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 5C99AE00830 for ; Tue, 7 Apr 2015 07:52:24 -0700 (PDT) Received: by mail.chez-thomas.org (Postfix, from userid 1998) id B1E65F811DA; Tue, 7 Apr 2015 08:52:23 -0600 (MDT) Received: from [192.168.1.114] (zeus [192.168.1.114]) by mail.chez-thomas.org (Postfix) with ESMTP id 31536F811D8; Tue, 7 Apr 2015 08:52:23 -0600 (MDT) Message-ID: <5523EF34.1000604@mlbassoc.com> Date: Tue, 07 Apr 2015 08:52:36 -0600 From: Gary Thomas User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Yocto Project Subject: sstate black hole? 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: Tue, 07 Apr 2015 14:52:27 -0000 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit I'm building for multiple ARM i.MX6 platforms. These have the same SoC, but slightly different peripherals. As far as I can tell, they should be able to share everything except for a few ${MACHINE} specific packages, e.g. the kernel and u-boot. Sadly, that doesn't seem to be the case. The architecture specific packages are being split into two categories - plain ARM/Cortex-A9 and those that have i.MX6 specific optimizations. For example, after building a complete image (on the order of core-image-sato), I have this split: $ ls tmp/work/cortexa9hf-vfp-neon-amltd-linux-gnueabi/ acl gst-player libsamplerate0 modutils-initscripts shadow-sysroot alsa-utils gst-plugins-bad libsm mpeg2dec shared-mime-info apmd gst-plugins-good libsndfile1 mplayer2 speex atk gst-plugins-ugly libsoup-2.4 mtdev sqlite3 attr gstreamer libtheora ncurses startup-notification base-passwd gstreamer1.0 libtirpc neon strace ... gst-ffmpeg libpostproc matchbox-wm scrnsaverproto zlib gst-fluendo-mpegmux libproxy mkfontdir settings-daemon gst-meta-base libpthread-stubs mkfontscale shadow $ ls tmp/work/cortexa9hf-vfp-neon-mx6qdl-amltd-linux-gnueabi/ alsa-lib gst-plugins-base imx-gpu-viv libfslparser libsdl xf86-video-imxfb-vivante cairo gstreamer1.0-plugins-bad libdrm libfslvpuwrap mesa xserver-xorg firmware-imx gstreamer1.0-plugins-base libfslcodec libglu pulseaudio It's the second category that is causing problems. They do not seem to end up in any shareable sstate at all. If I try to rebuild using only sstate, i.e. build my complete image to success, then remove 'tmp' and rebuild, using the sstate-cache from the first go, all of the above packages (alsa-lib, ..., xserver-xorg) are all rebuilt from scratch. Those recipes do seem to end in my sstate-cache, but they are never reused from it. What would make this happen? How can I prevent it? As is, sstate is not really shareable between these i.MX6 targets as so much is being rebuilt all the time... Any ideas or pointers gladly welcomed. Thanks -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------