Howto build kernel module?

[Grant Edwards]

On 2005-09-15, Grant Edwards <grante at visi.com> wrote:

>     # sudo apt-get install build-essential linux-headers-`uname -r`
>     
>     All of the packages needed are available on the Ubuntu CD.
>
> I did that, and the linux-headers are installed under /usr/src,
> but I still can't compile a kernel module:
>
>     ***
>     *** Host machine kernel version=2.6.12-8-386, Driver kernel version=2.6.12-8, Path to kernel sources=/usr/src/linux, use KBUILD=yes
>     ***
>     make -C /usr/src/linux M=/home/grante/peak-linux-driver-3.21/driver V=0  modules
>     /bin/sh: /usr/src/linux-headers-2.6.12-8/scripts/gcc-version.sh: No such file or directory
>     make[1]: Entering directory `/usr/src/linux-headers-2.6.12-8'
>     
>       WARNING: Symbol version dump /usr/src/linux-headers-2.6.12-8/Module.symvers
>                is missing; modules will have no dependencies and modversions.

Ah.  I had symlinked

  /usr/src/linux -> /usr/src/linux-headers-2.6.12-8

when I should have done

  /usr/src/linux -> /usr/src/linux-headers-2.6.12-8-386

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