> variable has incomplete type 'BIO_METHOD'
During BSDCan 2018 the intention to update OpenSSL in base to 1.1.x branch was documented.
Intention is to update 12-STABLE to current 1.1.0 and subsequently update it to 1.1.1 when that is released.
OpenSSL is not supported in htmldoc, according to upstream:
Closing, per upstream comment that openssl is not supported (reaD: only gnutls is supported).
Latest patch in 223721 removes BROKEN_SSL which is a red herring, as USES=ssl is a noop, and the port will still build with GnuTLS even with other ssl libraries installed
The OpenSSL configure options were removed in a later version.
Please update the port to the latest version and switch to using GnuTLS.