Re: Kernel Hacking

by Mathias Bage :: Rate this Message:

On Tue, 20 May 2008, Sergiy Fefilatyev wrote:

> for me rebuild command did not produce the right results

I had problems with kernel compiles too.

After googling and trying some bitbake commands, I noticed that you can't
(re)compile the kernel with 'bitbake -c rebuild gumstix-kernel' --
'rebuild' will download and unpack a fresh kernel source and then copy the
file:

gumstix-oe/com.gumstix.collection/packages/linux/gumstix-kernel-2.6.21/gumstix-custom-verdex/defconfig

to the file (assuming a uclibc target system and linux kernel version
2.6.21):

gumstix-oe/tmp/work/gumstix-custom-verdex-angstrom-linux-uclibcgnueabi/gumstix-kernel-2.6.21-r1/linux-2.6.21/.config

So, if you use 'bitbake gumstix-kernel -c rebuild' after a linux kernel
menuconfig (using 'bitbake gumstix-kernel -c menuconfig'), your kernel
.config file (path above) will have been overwritten by Gumstix Inc's
default file (the .../defconfig file (see 11 lines above))

To avoid this problem, I did the following;

bitbake gumstix-kernel -c menuconfig

bitbake gumstix-kernel -f -c compile

bitbake gumstix-kernel

bitbake -c rebuild task-base-gumstix

bitbake -c rebuild gumstix-directfb-image

(replace gumstix-directfb-image with your preferred image name)
The '-f' is used to force a '-c compile'.

>
> On Tue, May 20, 2008 at 3:21 PM, Mark Barton <mark@...> wrote:
>
>> Mike Caruso wrote:
>>> Hello list,
>>> I was wondering if anybody knew how to build a custom kernel for a
>>> Verdex running Open Embedded? I have a USB Ethernet adapter I'd like
>>> to get working on my Verdex, it uses the RTL8150 driver. My first
>>> thought was to try and add it to gumstix-custom-verdex.conf, but
>>> wouldn't you need to enable it in the kernel config first so that it
>>> knows to build that module? I found what appears to be the kernel
>>> config in:

[snip]

/Mathias

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