2009.07.23
I got this now to work on this Linux 2.4 kernel except the
KERN_ALERTs do not show up on the console, just in /var/log/messages.

I had to do the following to get it to compile.
  add the -c option which makes the compiler not look for main.
  add the ifndefs to get rid of redefinition warnings for __KERNEL__
    and MODULE