[yocto] How to select defconfig for kernel build with yocto/bitbake

[Dr. Markus Eich]

Thank you Bruce, that did the trick. But I am facing a new problem while 
using bitbake for the build process.

I have checked to build the odroid kernel with a standard crosscompiler 
tool chain and it works without any problems.

When I do the same with the bitbake toolchain (bitbake virtual/kernel), 
it somehow creates a recursive link in the folder

package/usr/src/kernel/drivers/gpu/arm/mali400/ump/arch/arch-release -> 
arch-release

This causes a crash in the build system.

Compilation runs fine though. This error seems to be within do_package. 
I have removed the link, but somehow it is created automatically.

Any ideas?

/Markus



On 09.07.2014 14:44, Bruce Ashfield wrote:
> On 14-07-09 05:38 AM, Dr. Markus Eich wrote:
>> Dear all,
>>
>> I work on the process to compile odroid xu kernel with yocto/bitbake
>>
>> In the kernel sources (from hardkernel) I have the corresponding
>> defconfig file, i.e. in the git folder
>> /arch/arm/configs/odroidxu_ubuntu_defconfig.
>>
>> How can I tell bitbake in my recipe to use "odroidxu_ubuntu_defconfig"?
>
> To trigger the oe-core kernel processing to use the defconfig, you need
> to put that defconfig in your SRC_URI.
>
> Which means you should grab a copy of that from the kernel tree, and
> in the same directory structure as your kernel recipe.
>
> See meta-skeleton/recipes-kernel/linux/linux-yocto-custom.bb for an
> example.
>
> Cheers,
>
> Bruce
>
>
>>
>> My recipe looks as follow:
>>
>> ===
>> require recipes-kernel/linux/linux-yocto.inc
>>
>> KERNEL_IMAGETYPE = "uImage"
>>
>> COMPATIBLE_MACHINE = "odroid-xu"
>>
>> LINUX_VERSION = "3.4.91"
>> LINUX_VERSION_EXTENSION = "-custom"
>>
>> FILESEXTRAPATHS_prepend := "${THISDIR}/linux-hardkernel-3.4:"
>>
>> S = "${WORKDIR}/git"
>>
>> # from where to fetch the kernel
>> KERNEL_REPO_OWNER ??= "hardkernel"
>> KERNEL_REPO_URI ??= "git://github.com/${KERNEL_REPO_OWNER}/linux.git"
>> KBRANCH = "odroidxu-3.4.y"
>>
>> SRCREV = "${AUTOREV}"
>>
>> KV = "3.4.91"
>> PV = "${KV}+gitr${SRCPV}"
>> LOCALVERSION ?= ""
>>
>>
>> SRC_URI = " \
>>    ${KERNEL_REPO_URI};nocheckout=1;branch=${KBRANCH} \
>> "
>>
>> PACKAGES =+ "kernel-headers"
>> FILES_kernel-headers = "${exec_prefix}/src/linux*"
>> ===
>>
>> Cheers,
>>
>> Markus
>>
>>
>>
>>
>

-- 
Dr.-Ing. Markus Eich

  Senior Researcher
  Marine Inspection Robotics
  Space Robotics
   Besuchsadresse der Nebengeschäftstelle:
  DFKI GmbH
  Robotics Innovation Center
  Robert-Hooke-Straße 5
  28359 Bremen, Germany
   Postadresse der Hauptgeschäftsstelle Standort Bremen:
  DFKI GmbH
  Robotics Innovation Center
  Robert-Hooke-Straße 1
  28359 Bremen, Germany

  Tel.:     +49 421 178 45-4105
  Zentrale: +49 421 178 45-0
  Fax:      +49 421 178 45-4150 (Faxe bitte namentlich kennzeichnen)
  E-Mail:   markus.eich at dfki.de

  Weitere Informationen: http://www.dfki.de/robotik
  -----------------------------------------------------------------------
  Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH
  Firmensitz: Trippstadter Straße 122, D-67663 Kaiserslautern
  Geschaeftsfuehrung: Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster
  (Vorsitzender) Dr. Walter Olthoff
  Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes
  Amtsgericht Kaiserslautern, HRB 2313
  Sitz der Gesellschaft: Kaiserslautern (HRB 2313)
  USt-Id.Nr.:    DE 148646973
  Steuernummer:  19/673/0060/3
  -----------------------------------------------------------------------