error from net-snmp on Win 2003 SP1 install - 5.1.3.1.

Tried to install 5.1.3.1 under Cygwin on a Win 2003 - SP1 server and got the following message. (Installation was just ./configure, make, and make install). I got the following error message from running ./configure.

error from net-snmp on Win 2003 SP1 install

checking winsock.h usability... no checking winsock.h presence... yes configure: WARNING: winsock.h: present but cannot be compiled configure: WARNING: winsock.h: check for missing prerequisite headers? configure: WARNING: winsock.h: see the Autoconf documentation configure: WARNING: winsock.h: