[yocto] Yocto 2.2 minimum kernel requirement

Mon Oct 31 07:37:54 PDT 2016

We are looking at upgrading from Yocto 1.8 to 2.2.

Yocto 2.2 has a minimum kernel requirement of 3.2.0.

This isn't an issue for our target (ARMv5, Linux 4.4) but may be
an issue for our automated build machines (x86, Linux 2.6.32-CentOS 6.)

However, there is a note that says
"For x86 and x86_64, you can reset OLDEST_KERNEL<http://www.yoctoproject.org/docs/2.2/mega-manual/mega-manual.html#var-OLDEST_KERNEL> to anything down to 2.6.32 if desired."

Is it possible to configure things such that we can keep supporting the old
kernel for the SDK while we support a more up-to-date kernel for the target?

MV
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