[OE-core] [PATCH] kernel.bbclass: restore kernel-abiversion file

[Koen Kooi]

Op 22 jun 2011, om 20:13 heeft Darren Hart het volgende geschreven:

> 
> 
> On 06/22/2011 08:41 AM, Koen Kooi wrote:
>> This fixes external module recipes that need $KERNEL_VERSION. It got removed by
>> 
>>    commit a9d41062e24a6b99661b3a5256f369b557433607
>>    Author: Darren Hart <dvhart at linux.intel.com>
>>    Date:   Tue Mar 8 17:09:10 2011 -0800
>> 
>>        kernel/bbclass: rework kernel and module classes to allow for building out-of-tree modules
>> 
>> seemingly as an oversight.
>> 
>> Signed-off-by: Koen Kooi <koen at dominion.thruhere.net>
>> ---
>> meta/classes/kernel.bbclass |    6 ++++++
>> 1 files changed, 6 insertions(+), 0 deletions(-)
>> 
>> diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
>> index 1bb69f5..8f9f108 100644
>> --- a/meta/classes/kernel.bbclass
>> +++ b/meta/classes/kernel.bbclass
>> @@ -123,6 +123,12 @@ kernel_do_install() {
>> 	install -d $kerneldir
>> 
>> 	#
>> +	# Store the kernel version in sysroots for module-base.bbclass
>> +	#
>> +
>> +	echo "${KERNEL_VERSION}" > $kerneldir/kernel-abiversion
> 
> From everything I can see this is an openembedded construct - which
> external modules need this? An example recipe I can review?
> 
> I'd like to understand this better as I don't like the idea of depending
> on an arbitrary file that isn't part of the kernel build system to build
> modules.
> 
> It seems to me that these modules should be able to DEPEND on something
> provided by the kernel recipes, rather than checking the contents of a
> file stuck in the build tree.

It's used in the stock module.bbclass thru module-base.bbclass:

https://github.com/openembedded/oe-core/blob/master/meta/classes/module-base.bbclass

An example of a recipe that's using it:

http://git.angstrom-distribution.org/cgi-bin/cgit.cgi/meta-texasinstruments/tree/recipes-bsp/powervr-drivers/omap3-sgx-modules_1.6.16.3977.bb

For various reasons the makefile can't be trusted or patched, so we can't use KBuild to get the version for us.

regards,

Koen