[yocto] kernel26 'machine feature'

[Chris Tapp]

On 5 Apr 2012, at 21:10, Gary Thomas wrote:

> On 2012-04-05 14:02, Chris Tapp wrote:
>> Quite a few machine conf files specify the kernel26 machine feature. e.g., crownbay.conf has:
>> 
>> MACHINE_FEATURES = "kernel26 screen keyboard pci usbhost ext2 ext3 x86 \
>>                     acpi serial usbgadget"
>> 
>> What does this do? It's not listed at http://www.yoctoproject.org/docs/latest/poky-ref-manual/poky-ref-manual.html#ref-features-machine and seems to be at odds with:
>> 
>> PREFERRED_PROVIDER_virtual/kernel ?= "linux-yocto"
>> PREFERRED_VERSION_linux-yocto = "3.0%"
> 
> I don't think it does anything any more.  I'm pretty sure it used
> to be used to select which style of kernel module utilities to
> install (there was a change in kernel module format between 2.4
> and 2.6), but it seems that's gone now.  At least in the Poky/Yocto
> tree (oe-core + meta-yocto), there is no active use of this feature.

Thanks, I was hoping it was something as simple as that.

Another (possibly related) question - when the kernel built I noticed that linux_libc_headers_yocto-2.6.37 was 'mentioned' in the log output. Why was this used and not the headers for 3.0.18 ? The host is 2.6.32, so it doesn't look like is was for the tool chain.

Chris Tapp

opensource at keylevel.com
www.keylevel.com