[OE-core] [PATCH 10/13] linux-yocto/3.14: introduce versioned recipes

[Richard Purdie]

On Thu, 2014-03-27 at 14:25 -0400, Bruce Ashfield wrote:
> The release kernel for Yocto 1.5 is the 3.14 kernel, so we introduce
> the versioned recipes here.
> 
> Signed-off-by: Bruce Ashfield <bruce.ashfield at windriver.com>
> ---
>  meta/recipes-kernel/linux/linux-yocto-tiny_3.14.bb | 21 ++++++++++++
>  meta/recipes-kernel/linux/linux-yocto_3.14.bb      | 37 ++++++++++++++++++++++
>  2 files changed, 58 insertions(+)
>  create mode 100644 meta/recipes-kernel/linux/linux-yocto-tiny_3.14.bb
>  create mode 100644 meta/recipes-kernel/linux/linux-yocto_3.14.bb
> 
> diff --git a/meta/recipes-kernel/linux/linux-yocto-tiny_3.14.bb b/meta/recipes-kernel/linux/linux-yocto-tiny_3.14.bb
> new file mode 100644
> index 000000000000..8faa9584acf0
> --- /dev/null
> +++ b/meta/recipes-kernel/linux/linux-yocto-tiny_3.14.bb
> @@ -0,0 +1,21 @@
> +require recipes-kernel/linux/linux-yocto.inc
> +
> +KBRANCH = "standard/tiny/base"
> +LINUX_KERNEL_TYPE = "tiny"
> +KCONFIG_MODE = "--allnoconfig"
> +
> +LINUX_VERSION ?= "3.14-rc8"
> +
> +KMETA = "meta"
> +
> +SRCREV_machine ?= "fecc3fd7d31bd93766ff4f0431fecdbbfa4c3a7c"
> +SRCREV_meta ?= "3689f99f4d2a051e8d3ff72345a67d4d04a88020"
> +
> +PV = "${LINUX_VERSION}+git${SRCPV}"

I'm afraid we can't do this in such a simple way. The big issue is that
according to our version comparison functions (in bitbake and in the
package managers), "3.14-rc8" > "3.14". This will then break updates
from package feeds.

The traditional way we've worked around this in times gone by is the
rather ugly:

PV = "3.13+3.14-rc8+git${SRCPV}"

since in this case "3.14" > "3.13+3.14-rc8"

The better way to handle this would be "3.14~rc8" however not all of our
package backends have support for "~" at this point so we can't do that.
There is a long standing bug open about this.

The same issue also applies to the libc-headers recipe.

Cheers,

Richard