net-snmp 5.4.2.1_1 Build Failed Under Mac OS X 10.6

[james.applemac@…]

OS: OS X 10.6
xcode 3.2
macport 1.8.0_0 for Snow Leopard

following is the error messages: =====================

port install net-snmp
Port command started with PID 11004
--->  Computing dependencies for net-snmp
--->  Fetching net-snmp
--->  Verifying checksum(s) for net-snmp
--->  Extracting net-snmp
--->  Applying patches to net-snmp
--->  Configuring net-snmp
Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_net_net-snmp/work/net-snmp-5.4.2.1" && ./configure --prefix=/opt/local --with-defaults --disable-agent --with-sys-contact=nobody@no.where --with-persistent-directory=/opt/local/var/net-snmp --mandir=/opt/local/share/man --infodir=/opt/local/share/info --with-logfile=/opt/local/var/log --with-openssl=/opt/local --with-zlib=/opt/local --with-install-prefix=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_net_net-snmp/work/destroot --without-kmem-usage --enable-ipv6 --with-out-mib-modules=mibII/ipv6 " returned error 1
Command output: checking for netinet6/nd6.h... no
checking for netinet6/tcp6_timer.h... no
checking for netinet6/tcp6_var.h... no
checking for dlfcn.h... (cached) yes
checking search.h usability... yes
checking search.h presence... yes
checking for search.h... yes
checking for netinet/in_pcb.h... yes
checking for sys/disklabel.h... no
checking openssl/hmac.h usability... yes
checking openssl/hmac.h presence... yes
checking for openssl/hmac.h... yes
checking openssl/evp.h usability... yes
checking openssl/evp.h presence... yes
checking for openssl/evp.h... yes
checking openssl/aes.h usability... yes
checking openssl/aes.h presence... yes
checking for openssl/aes.h... yes
checking openssl/des.h usability... yes
checking openssl/des.h presence... yes
checking for openssl/des.h... yes
checking openssl/dh.h usability... yes
checking openssl/dh.h presence... yes
checking for openssl/dh.h... yes
checking security/cryptoki.h usability... no
checking security/cryptoki.h presence... no
checking for security/cryptoki.h... no
checking for lpstat... /usr/bin/lpstat
checking for cgetnext... yes
checking for authentication support... configure: error: Asked to use OpenSSL but I couldn't find it.
Error: Status 1 encountered during processing.
--->  Executing: /opt/local/bin/port install net-snmp