hostap_compat.h compling error...

[vestige]

Hi all,
  I'm a newbie to Host AP :).
  Now I wanted to build a host AP module for an embeded 2.4.21 kernel.
So I downloaded hostap-driver-0.3.10.tar.gz. I wanted to build it with
kernel, so I followed
hostap-driver-0.3.10/kernel-patches/readme to make a patch to the
kenel. Unfortunately, there wasn't 2.4.21 patch, so I just use 2.4.20
patch and do what the readme told me to.
  But at the step of "make modules", following error occur,
hostap_compat.h:22: error: parse error before "do"
hostap_compat.h:22: error: parse error before "struct"

  I wondered how could I fix it?
  Thanks very much!

  Wu Yu