[yocto] Override machine conf settings

[Ayoub Zaki]

Hi Khem,

Thanks for the hints but unfortunately I got the following error :

~/Projects/yocto/build$ MACHINE=raspberrypi bitbake -f virtual/kernel






WARNING: Duplicate inclusion for /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf in /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf

WARNING: Duplicate inclusion for /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf in /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf

WARNING: Duplicate inclusion for /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf in /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf

WARNING: Duplicate inclusion for /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf in /home/zak/Projects/yocto/meta-
something/conf/machine/raspberrypi.conf

ERROR: Unable to parse /home/zak/Projects/yocto/bitbake/lib/bb/data_smart.py

Traceback (most recent call last):

  File "/home/zak/Projects/yocto/bitbake/lib/bb/data_smart.py", line 400,
in DataSmart.expandWithRefs(s='/home/zak/Projects/yocto/meta-
poky:${TOPDIR}:/home/zak/Projects/yocto/meta:/home/zak/
Projects/yocto/meta-yocto-bsp:/home/zak/Projects/yocto/meta-
yocto-bsp:/home/zak/Projects/yocto/meta-something:/home/
zak/Projects/yocto/meta-raspberrypi:/home/zak/Projects/yocto/meta-openembedded/meta-oe',
varname='BBPATH'):

                 except Exception as exc:

    >                raise ExpansionError(varname, s, exc) from exc



bb.data_smart.ExpansionError: Failure expanding variable BBPATH, expression
was /home/zak/Projects/yocto/meta-poky:${TOPDIR}:/home/zak/
Projects/yocto/meta:/home/zak/Projects/yocto/meta-yocto-bsp:
/home/zak/Projects/yocto/meta-yocto-bsp:/home/zak/Projects/
yocto/meta-something:/home/zak/Projects/yocto/meta-raspberrypi:/home/zak/
Projects/yocto/meta-openembedded/meta-oe which triggered exception
RecursionError: maximum recursion depth exceeded while calling a Python
object





2017-01-12 21:39 GMT+01:00 Khem Raj <raj.khem at gmail.com>:

> On Thu, Jan 12, 2017 at 10:37 AM, Ayoub Zaki <ayoub.zaki at googlemail.com>
> wrote:
> > Hello,
> >
> > I'm trying to figure out how can I override machine settings, for
> example in
> > raspberrypi  I want to change default kernel version from 4.4.x to 4.1.x
> for
> > that I created in my layer meta-somelayer/conf/machine/raspberrypi.conf
> :
>
> there is a machine config with same name in meta-raspberrypi layer and
> thats taking
> precedence over your layer see conf/layer.conf where it sets the
> PRIORITY and also ensure
> the BBPATHs are prefixed for your layer to be in front of
> meta-raspberrypi layer. So that
> it uses your layer and falls back to meta-raspberrypi to do the filler
> work.
>
>
> >
> > require conf/machine/raspberrypi.conf
> > PREFERRED_VERSION_linux-raspberrypi = "4.1.%"
> >
> >
> > when I ran bitbake it gives:
> >
> > $ MACHINE=raspberrypi bitbake virtual/kernel
> >
> > NOTE: Tainting hash to force rebuild of task
> > /home/zak/Projects/yocto/meta-somelayer/recipes-kernel/linux/
> linux-raspberrypi_4.4.bb,
> > do_compile
> >
> > so it seems that bitbake ignored my override settings !
> >
> > I'm using morty branch and my layer meta-somelayer has higher priority
> than
> > meta-rapberrypi :
> >
> > $ bitbake-layers show-layers
> > layer                 path                                      priority
> > ============================================================
> ==============
> > meta                  /home/zak/Projects/yocto/meta        5
> > meta-yocto-bsp        /home/zak/Projects/yocto/meta-yocto-bsp  5
> > meta-poky             /home/zak/Projects/yocto/meta-poky   5
> > meta-yocto-bsp        /home/zak/Projects/yocto/meta-yocto-bsp  5
> > meta-raspberrypi      /home/zak/Projects/yocto/meta-raspberrypi  9
> > meta-somelayer        /home/zak/Projects/yocto/meta-somelayer  5
> >
> >
> > when I tried to override the setting in rpi.conf instead of
> raspberrypi.conf
> > in meta-somelayer/conf/machine/rpi.conf:
> >
> > MACHINEOVERRIDES = "raspberrypi:${MACHINE}"
> > require conf/machine/raspberrypi.conf
> >
> > PREFERRED_VERSION_linux-raspberrypi = "4.1.%"
> >
> > and running bitbake with :
> >
> >
> > $ MACHINE=rpi bitbake virtual/kernel
> > NOTE: Tainting hash to force rebuild of task
> > /home/zak/Projects/yocto/meta-somelayer/recipes-kernel/linux/
> linux-raspberrypi_4.1.bb,
> > do_compile
> >
> > it worked !
> >
> > My objective however is to override the machine settings and keep the
> same
> > MACHINE name.
> >
> > Any Ideas?
> >
> >
> > Regards,
> >
> >
> >
> >
> >
> > --
> > _______________________________________________
> > yocto mailing list
> > yocto at yoctoproject.org
> > https://lists.yoctoproject.org/listinfo/yocto
> >
>
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