On Thu, Apr 05, 2012 at 09:17:28PM +0100, Chris Tapp wrote: > 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.
Yes, Classic OE (unlike OE-Core) used to support 2.4 and 2.6 kernels, hence the use flag. > 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. Those are "user-space" kernel headers for libc. Those usually don't need to match the exact kernel version, as APIs don't change that often between the kernel and user-space. Unless you need some specific new API that got added in the latest kernel... -- Denys _______________________________________________ yocto mailing list [email protected] https://lists.yoctoproject.org/listinfo/yocto
