Cross Compile Cisco VPN Client For Openwrt

Hi Can some one please compile Cisco VPN Client for AR71xx platform. I am using Kamikaze 8.09.2 on Mikrotik RB433AH. I am total newbie to openwrt software compliation and i have no idea on how to write makefile for cross compiliation. I have used vpnc in my project but it dosnt help as it has a lot of features missing. I other words vpnc is not at all a option for me. Following is the link for cisco vpn client source code.

ftp://ftp.cs.cornell.edu/pub/rvr/upload/vpn-5000-linux-5.2.8-3des-k9.tar.Z
ftp://ftp.cs.cornell.edu/pub/rvr/upload/vpn-5000-linux-5.2.8-des-k8.tar.Z

Can someone please provide me the ipk for these two packages for AR71xx platform...

Thanks in advance..

Kalpesh