digest defined ENABLE_DIGEST
https defined HAVE_SSL
ipv6 defined ENABLE_IPV6
iri defined ENABLE_IRI
large-file SIZEOF_OFF_T >= 8
nls defined ENABLE_NLS
ntlm defined ENABLE_NTLM
opie defined ENABLE_OPIE
ssl choice:
openssl defined HAVE_LIBSSL || defined HAVE_LIBSSL32
gnutls defined HAVE_LIBGNUTLS