Hi Otavio, Le Mon, 23 Sep 2013 22:04:41 -0300, Otavio Salvador <[email protected]> a écrit :
> On Mon, Sep 23, 2013 at 8:04 PM, Eric Bénard <[email protected]> wrote: > > H Otavio, > > > > Le Mon, 23 Sep 2013 16:55:36 -0300, > > Otavio Salvador <[email protected]> a écrit : > > > >> This allow to easy reuse of binary packages among similar SoCs. The > >> usual use for this is to share SoC specific packages among different > >> boards. The class can be used to share GPU packages for i.MX53 boards > >> (as all them share the AMD GPU) and i.MX6 based boards (as all them > >> share Vivante GPU). > >> > >> It inspects the database and identify if the package provides or > >> depends on one of subarch provided values and if it does, it sets the > >> PACKAGE_ARCH for MACHINE_SUBARCH value otherwise if it matches in the > >> machine specific filter, it sets it to MACHINE_ARCH. > >> > >> Change-Id: Icb0a8060e862c8eeb166c45d1b39c40de07b01d8 > >> Signed-off-by: Otavio Salvador <[email protected]> > ... > > what is the time cost of this dynamic setting vs the static one ? > > This reduces the amount of packages we build, for example in case of > core-image-x11 we: > > $ ls -l tmp/deploy/rpm/cortexa9hf_vfp_neon_mx6/*.rpm | wc -l > 75 > > So we reuse 75 binaries; these would be build otherwise. > how many recipes are concerned by these 75 packages ? > Regarding it being dynamically set or statically set it has following > benefits: > > * correctness: it is easier to ensure the system behaves as expected > * correctness for non-tracked recipes: new recipes, if depending on > virtual/kernel or GPU has the right architecture choosen, without a > .bbappend file for them > * safeness: non-expert users get a more adequate behavior as the > complexity of choosing the right architecture is simplified for them do you have an example ? > * easy maintenance: it is easier for me, as maintainer, to maintain a > code which decides what to do than having hundreds of bbappend files > for it but in the present patchset you don't remove any bbappend ! What is the cost on the build/parse time to have this code running dynamicaly ? While at it : why does qt4 depends on virtual/kernel ? That's quite annoying as it seems qt gets rebuilt everytime we make a change to the kernel. Eric _______________________________________________ meta-freescale mailing list [email protected] https://lists.yoctoproject.org/listinfo/meta-freescale
