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

[Dr. Markus Eich]

I have tried the different task separately.

do_fetch works, no recursive link created
do_kernel_checkout works, no recursive link created
do_kernel_configme works, no recursive link created
do_compile works, no recursive link created
do_compile_kernelmodules works, no recursive link created
do_install works, no recursive link created

do_package : Here it crashes. Th package subfolder is created and here 
it creates the recursive link within the subfolder.

What does do_package do in detail? How can I further analyze the error.

/Markus




On 10.07.2014 17:46, Bruce Ashfield wrote:
> On 14-07-10 07:11 AM, Dr. Markus Eich wrote:
>> 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?
>
> Nothing off the top of my head. That link would be created by the kernel
> build, and not by bitbake or the oe-core kernel build classes.
>
> I'd start by looking at the kernel's makefiles and seeing where the
> link is being created.
>
> Do specific tasks work ? i.e. is that happening during unpack/patch, or
> during compilation.
>
> Bruce
>
>>
>> /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
  
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