digest          defined ENABLE_DIGEST
https           defined HAVE_SSL
ipv6            defined ENABLE_IPV6
iri             defined ENABLE_IRI
large-file      SIZEOF_OFF_T >= 8

md5 choice:
    builtin     defined HAVE_BUILTIN_MD5
    openssl     defined HAVE_OPENSSL_MD5
    solaris     defined HAVE_SOLARIS_MD5

nls             defined ENABLE_NLS
ntlm            defined ENABLE_NTLM
opie            defined ENABLE_OPIE

ssl choice:
    openssl     defined HAVE_LIBSSL
    gnutls      defined HAVE_LIBGNUTLS