[Arm-dev] configs directory, compiling a custom kernel for ARM

[Chris Szilagyi]

One thing that I had searched for, but doesn't seem to exist, is 
CentOSPlus for ARM.  I would definitely be interested in this, but not 
sure if that is relevant here or not.

Best,
Chris


On 02/16/2018 02:06 PM, Chris Szilagyi wrote:
> Johnny,
>
> Thank you for the reply and I will continue the top posting, at least 
> for this thread. :)  Based on your reply I am assuming the 
> instructions posted on the CentOS wiki will be relevant for for 4.14.x?
>
> I did see the talk about the 4.14 kernel here.  As for options I can 
> definitely see why you would go with the Fedora defaults.  I was 
> compiling to obtain AppleTalk protocol support (not common) but I 
> ended up using DKMS and that worked perfectly.
>
> Thank you for all of your work.
>
> Chris
>
>
> On 02/16/2018 10:31 AM, Johnny Hughes wrote:
>> I normally don't top post .. but since you did, I will to follow along
>> in this thread :)
>>
>> You might want to try the newer 4.14.17 kernel that we are currently
>> testing .. see this thread:
>>
>> https://lists.centos.org/pipermail/arm-dev/2018-February/003223.html
>>
>> If this kernel works, we will likely be upgrading to the 4.14.x LTS 
>> tree.
>>
>> There does seem to be some differences in some config options between
>> the 4.9.x and 4.14.x kernels (we took the default configs for each from
>> Fedora).  If we need to turn on (or off) options in the 4.14.x config
>> file, please feed that back to us on this list.
>>
>> Thanks,
>> Johnny Hughes
>>
>>
>> On 02/07/2018 02:54 PM, Chris Szilagyi wrote:
>>> I finally ended up working around the problem by adding a copy 
>>> statement
>>> in the kernel.spec file, just after it runs the scripts to generate the
>>> configs, to manually copy my working config file to the
>>> BUILD/kernel-*/linux-*/ folder.  From there it looks like the scripts
>>> pick it up and then place it in to the BUILD/kernel-*/linux-*/configs/
>>> folder.  But initially I still am not sure where it tries to get them
>>> from initially.
>>>
>>>
>>> On 2018-02-07 09:46 AM, Chris Szilagyi wrote:
>>>> Hello:
>>>> I am following the CentOS instructions to compile a custom kernel for
>>>> ARM.  I am following the instructions here:
>>>> https://wiki.centos.org/HowTos/Custom_Kernel.  I do need my own config
>>>> which I have generated and copied to the directories as mentioned in
>>>> the instructions.
>>>>
>>>> I eventually get to the step and start the build with : rpmbuild -bb
>>>> --target=`uname -m` kernel.spec 2> build-err.log | tee build-out.log
>>>>
>>>> During the build, just after the "make -s mrproper", it tries to "cp
>>>> configs/kernel-4.9.75-armv7l.config", and gives the error "No such
>>>> file or directory".  It seems that the BUILD/kernel-*/linux-*configs/
>>>> directory is somehow being generated by some scripts, and the config I
>>>> need is not there.  I can't seem to find out where it gets the config
>>>> files that it places in the configs folder.  Can anybody shed some
>>>> light on this?
>>>>
>>>> I noticed that the running kernel is "armv7hl", and doing a "uname -m"
>>>> returns "armv7l" (missing the "h").  Not sure if this has anything to
>>>> do with it.