2.6.21.5-rt14 wont'compile here

[Dragan Noveski <perodog@gmx.net>]

hi list,
since i am trying to compile 2.6.24/25 kernel with the rt-patches, no 
one version will compile here and i always get the same output.
this is how it looks like while trying to compile 2.6.21.4-rt13, but it 
looks the same for 2.6.21.5-rt14 :


.....
 GEN     .version
  CHK     include/linux/compile.h
  UPD     include/linux/compile.h
  CC      init/version.o
  LD      init/built-in.o
  LD      .tmp_vmlinux1
kernel/built-in.o:(.data+0x5d8): undefined reference to 
`preempt_mark_thresh'
make: *** [.tmp_vmlinux1] Fehler 1



for me this looks related to:

http://www.mail-archive.com/linux-rt-users@vger.kernel.org/msg00447.html

but i don't know how to fix it myself.

i would appreciate any help in  finding out more about this problem  or 
how to solve it.


cheers,
doc