Created attachment 248464 [details] configure with --without-zlib-version-check option security/openiked 2.2 fails at configure by the error below: ---- checking for possibly buggy zlib... yes configure: error: *** zlib too old - check config.log *** Your reported zlib version has known security problems. It's possible your vendor has fixed these problems without changing the version number. If you are sure this is the case, you can disable the check by running "./configure --without-zlib-version-check". If you are in doubt, upgrade zlib to version 1.2.3 or greater. See http://www.gzip.org/zlib/ for details. ---- The zlib version in base is 1.2.13 in 13.2-RELEASE, and apparently newer in 13-STABLE, 14.0-RELEASE, 14-STABLE and CURRENT. So, we can use the option --without-zlib-version-check safely. The reason of configure failing is maybe FreeBSD wraps zlib with the zopen wrapper?