[OE-core] KBUILD_DEFCONFIG issue

[Steffen.Pankratz at elektrobit.com]

Hi

I am in the process of creating a board support package (1) for NVIDIAs Jetson TK1 board (2).

In my kernel recipe I am using 'KBUILD_DEFCONFIG = "tegra_defconfig"' but the build failed always.

I think the issue is in do_kernel_metadata (meta/classes/kernel-yocto.bbclass), if no defconfig exists, the config specified in KBUILD_DEFCONFIG is never copied.
Attached you will find a possible patch for this issue.
Feedback is welcome.

Another, probably unrelated problem I face right now is, that basically most of the options of the tegra_defconfig get removed by kconf_check.
The kernel gets build, there are no warnings that things got removed but in the files in .meta/cfg/standard/jetson-tk1  I see for example:

Value requested for CONFIG_ARCH_TEGRA_124_SOC not in final .config Requested value:  CONFIG_ARCH_TEGRA_124_SOC=y Actual value:

Any ideas?


Kind regards
-Steffen

(1) https://bitbucket.org/kratz00/meta-jetson-tk1/src
(2) http://elinux.org/JetsonTK1

--
Steffen Pankratz
Expert, Software Integration & Services

EB - Driving the Future of Software
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