Lack of Linux Headers?

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1

Hey everyone,

I've just run Ubuntu on my Beagleboard for the first time and it feels
great. Currently it's running Xubuntu 10.04.1 . However, I've had
trouble building packages.

I've been trying to use a DisplayLink LCD screen, and part of the
instruction on installing displaylink drivers involves a package
called "udlfb". When I enter "make" under the udlfb directory, there
is an error:

2

It really depends on which kernel you are running.. If you are
running ubuntu's supported kernel, the headers are available in the
repo..

However if your running one of my images (2.6.35.x-lx syntax with
uname -a) you'll have built it against the src/tree here..

https://code.launchpad.net/~beagleboard-kernel/+junk/2.6-stable

Regards,

3

Hi Robert,

I'm not sure how can I derive headers from the given rev.
Say I need headers for 2.6.35.6-l5, is there a patch I can apply to
the standard ubuntu linux-headers?

I'm trying to build a kernel module and get some mismatch on module
installation, possibly be due to headers difference.

Thanks in advance,
Vlad

4

Not from ubuntu's linux-headers but you can make it yourself from mainline..

Get 2.6.35 + 2.6.35.6 from kernel.org..

DL Patch and config:
http://rcn-ee.net/deb/lucid/v2.6.35.6-l5/patch-2.6.35.6-l5.diff.gz
http://rcn-ee.net/deb/lucid/v2.6.35.6-l5/defconfig

patch source, add defconfig as .config then run:

make ARCH=arm CROSS_COMPILE=${CC} headers_install
INSTALL_HDR_PATH=dir/to/where/ever/

Regards,

5

Thank you Robert,

Seems like headers_install exports headers for the user space and
could be not enough for building a kernel module, as I learned.
I ended up building the kernel and pointing /lib/modules/<uname -r>/
build to the tree. Perhaps it's an overkill and there is an easier way
to extract all the needed stuff from the source tree.

Thanks again for your help,
Vlad