[tproxy] Issue with iptables 1.3.8

Hy, I'm using the new version o tproxy 4.0.1 for kernel 2.6.22 and iptables 1.3.8. The patches are applyed correctly both in kernel and iptables. The modules of kernel are compiled correctly but I cant compile the library for iptables. Dont generate the .so file. Can someone help me please. Thanks, Marco.