Problems compiling whoisserver

Hi, I'm not sure if this is the right place for this query, so apologies in advance if it's not. I'm having a few problems compiling whoisserver under Debian on AMD64. The error I'm getting is:- In file included from modules/ip/inet_ntop.c:39: modules/ip/inet6def.h:42: error: conflicting types for `inet_ntop' /usr/include/arpa/inet.h:67: error: previous declaration of `inet_ntop' make[3]: *** [inet_ntop.o] Error 1 make[3]: Leaving directory `/root/whoisserver-latest/src' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/root/whoisserver-latest/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/whoisserver-latest' make: *** [all] Error 2 Does this make sense to anyone? Andy.