On Fri, Jul 18, 2014 at 9:26 AM, Gary Thomas <g...@mlbassoc.com> wrote:
> 've always used 'IMAGE_INSTALL += " xyz"' in my local.conf > to add new packages to a build. That said, I had a working > build for qemuarm (probably doesn't matter) and I added: > IMAGE_INSTALL += " strace" > This produced a completely broken image which barely came > up to a shell, lots of missing programs, etc. > > I then tried > CORE_IMAGE_EXTRA_INSTALL += " strace" > which produced a perfectly working build (just as previous) > with the new package added. > > I can see that the images produced are vastly different: > > * Original working build > -rw-r--r-- 1 gthomas gthomas 11719 Jul 18 09:34 > core-image-sato-qemuarm-20140718124453.rootfs.manifest > -rw-r--r-- 1 gthomas gthomas 87611203 Jul 18 09:34 > core-image-sato-qemuarm-20140718124453.rootfs.tar.bz2 > > * After 'IMAGE_INSTALL += ' > -rw-r--r-- 1 gthomas gthomas 9986 Jul 18 09:55 > core-image-sato-qemuarm-20140718155134.rootfs.manifest > -rw-r--r-- 1 gthomas gthomas 37859884 Jul 18 09:56 > core-image-sato-qemuarm-20140718155134.rootfs.tar.bz2 > > * After 'CORE_IMAGE_EXTRA_INSTALL += ' > -rw-r--r-- 1 gthomas gthomas 11738 Jul 18 10:05 > core-image-sato-qemuarm-20140718160108.rootfs.manifest > -rw-r--r-- 1 gthomas gthomas 87720106 Jul 18 10:05 > core-image-sato-qemuarm-20140718160108.rootfs.tar.bz2 > > What's the difference and why did the first attempt fail? > Most likely the image defined its own IMAGE_INSTALL using ?=, so defining it yourself in the configuration data overrode its default definition, since ?= is "set only if unset". If the recipe didn't use ?=, then your IMAGE_INSTALL += would have had no effect at all. To append to IMAGE_INSTALL directly without using CORE_IMAGE_EXTRA_INSTALL you could have used IMAGE_INSTALL_append, since that's a postponed operation that happens at the end of the recipe parsing. -- Christopher Larson clarson at kergoth dot com Founder - BitBake, OpenEmbedded, OpenZaurus Maintainer - Tslib Senior Software Engineer, Mentor Graphics
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