Bug 4204

Summary:	PREFERRED_VERSION_linux-yocto does not override machine specific settings in poky.conf
Product:	[Build System, Metadata & Runtime] Meta-yocto	Reporter:	Song Liu <song.liu>
Component:	meta-yocto	Assignee:	Richard Purdie <richard.purdie>
Status:	VERIFIED NOTABUG	QA Contact:	Bogdan Alexandru Voiculescu <bogdanx.a.voiculescu>
Severity:	normal
Priority:	Undecided	CC:	bogdanx.a.voiculescu, poky.bs.watcher, poky.watcher, Qi.Chen
Version:	unspecified
Target Milestone:	---
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Song Liu 2013-04-04 23:48:57 UTC

Set this in local.conf:

PREFERRED_VERSION_linux-yocto = "3.4%"

to build a qemux86 image with 3.4 kernel. But the machine specific settings in poky.conf overrides this and continue building 3.8 kernel.

As a user I think the generic settings in local.conf reflects the user's intent and should have the highest priority. 


 4461 # $PREFERRED_VERSION_linux-yocto [5 operations]
 4462 #   set /home/liusong/yocto/yp-beta-build/conf/local.conf:249
 4463 #     "3.4%"
 4464 #   set? /home/liusong/yocto/beta/meta-yocto/conf/distro/poky.conf:17
 4465 #     "3.4%"
 4466 #   finalize ast.py:331 [finalize]
 4467 #     "was: 3.4%"
 4468 #   override[qemux86]:set? /home/liusong/yocto/beta/meta-yocto/conf/distro/poky.conf:18
 4469 #     "3.8%"
 4470 #   finalize override[qemux86]:
 4471 #     "3.8%"
 4472 # computed:
 4473 #   "3.8%"
 4474 PREFERRED_VERSION_linux-yocto="3.8%"

Comment 1 Chen Qi 2013-04-08 07:22:38 UTC

Notice the 'override' message in your log.
"
4468 #   override[qemux86]:set? /home/liusong/yocto/beta/meta-yocto/conf/distro/poky.conf:18
 4469 #     "3.8%"
 4470 #   finalize override[qemux86]:
 4471 #     "3.8%"
"

What about using PREFERRED_VERSION_linux-yocto_qemux86 = "3.4%" ?


//Chen Qi

Comment 2 Richard Purdie 2013-04-08 14:30:51 UTC

This is working as designed, even if it is not intuative. As Chen points out, you can use a machine override to force this, or you can use the forcevariable override which wins over all others:

PREFERRED_VERSION_linux-yocto_forcevariable = "3.4%"

Comment 3 Bogdan Alexandru Voiculescu 2015-10-28 09:38:14 UTC

Verified as not a bug; I filled a separated bug for updating the documentation: how to easily change the kernel version: Bug 8595