Can not install libwww on Mac OS X 10.5.1

[mea@…]

sudo port install libwww results in:

--->  Building libwww with target all
Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_www_libwww/work/w3c-libwww-5.4.0" && make all " returned error 2
Command output: make[2]: Nothing to be done for `all'.
Making all in modules
Making all in expat
Making all in xmltok
make[4]: Nothing to be done for `all'.
Making all in xmlparse
make[4]: Nothing to be done for `all'.
make[4]: Nothing to be done for `all-am'.
Making all in md5
make[3]: Nothing to be done for `all'.
make[3]: Nothing to be done for `all-am'.
Making all in Library
Making all in src
Making all in SSL
Making all in windows
make[5]: Nothing to be done for `all'.
/bin/sh ../../../libtool --mode=compile /usr/bin/gcc-4.0 -DHAVE_CONFIG_H -I. -I. -I../../.. -I/usr/local/include 	-I../../../modules/md5 	-I../../../modules/expat/xmlparse 	-I../../../Library/src 	-I/usr/include/openssl  -I/opt/local/include  -O2 -Wall -c HTSSL.c
rm -f .libs/HTSSL.lo
/usr/bin/gcc-4.0 -DHAVE_CONFIG_H -I. -I. -I../../.. -I/usr/local/include -I../../../modules/md5 -I../../../modules/expat/xmlparse -I../../../Library/src -I/usr/include/openssl -I/opt/local/include -O2 -Wall -c HTSSL.c  -fno-common -DPIC -o .libs/HTSSL.lo
In file included from HTSSL.c:33:
/usr/include/openssl/rand.h:86: error: redefinition of typedef 'RAND_METHOD'
/opt/local/include/openssl/ossl_typ.h:131: error: previous declaration of 'RAND_METHOD' was here
HTSSL.c: In function 'HTSSL_init':
HTSSL.c:214: warning: assignment from incompatible pointer type
make[5]: *** [HTSSL.lo] Error 1
make[4]: *** [all-recursive] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all-recursive-am] Error 2

Error: Status 1 encountered during processing.