Re: How to select Linux kernel version?


Quentin Schulz
 

Hi Jupiter,

On Fri, Jan 08, 2021 at 02:03:47PM +1100, Jupiter wrote:
Thanks Quentin, here are results:

So we can stop half guessing and help you can you give us the output of:
bitbake -e virtual/kernel | grep -e "^PREFERRED_PROVIDER_"
$ bitbake -e virtual/kernel | grep -e "^PREFERRED_PROVIDER_"
[...]
PREFERRED_PROVIDER_virtual/kernel="linux-yocto"
[...]

bitbake -e virtual/kernel | grep -e "^PREFERRED_VERSION_"
$ bitbake -e virtual/kernel | grep -e "^PREFERRED_VERSION_"
PREFERRED_VERSION_linux-libc-headers="5.2%"
PREFERRED_VERSION_linux-yocto="5.10.%"
Not sure this will fly nicely (the kernel headers being older than your
kernel).

Otherwise ok.


bitbake -e virtual/kernel | grep -e "^OVERRIDES="
$ bitbake -e virtual/kernel | grep -e "^OVERRIDES="
OVERRIDES="linux:i686:pn-linux-yocto:x86:qemuall:qemux86:solar-distro:class-target:libc-glibc:forcevariable"

bitbake-layers show-recipes linux-yocto linux-fslc
$ bitbake-layers show-recipes linux-yocto linux-fslc
NOTE: Starting bitbake server...
Loading cache: 100% |############################################| Time: 0:00:00
Loaded 1473 entries from dependency cache.
Parsing recipes: 100% |##########################################| Time: 0:00:02
Parsing of 922 .bb files complete (920 cached, 2 parsed). 1475
targets, 295 skipped, 0 masked, 0 errors.
=== Matching recipes: ===
linux-fslc:
meta-freescale 5.1 (skipped)
linux-yocto:
meta 5.2.28+gitAUTOINC+dd6019025c_992280855e
meta 4.19.87+gitAUTOINC+4f5d761316_b44ad1b1e7
And here we have the winner :)

You don't have a 5.10 linux-yocto recipe so obviously bitbake can't
compile it.

Now, I don't know why 4.19 is taken and not 5.2. I quickly looked into
both recipes and didn't find a DEFAULT_PREFERENCE
(c.f. https://docs.yoctoproject.org/ref-manual/variables.html?highlight=preference#term-DEFAULT_PREFERENCE).

So, can you tell us how you created your 5.10 recipe and where you put
it (the filename, the path in the layer, is it in a new layer? if yes,
did you add it to bblayers.conf? etc...).

Quentin

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