zlib upgrade

Over the last couple of months I have been unable to upgrade zlib - each time getting the error messages shown below. Is there any sort of problem with this port or any way to fix the upgrade? Building zlib 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_archivers_zlib/work/zlib-1.2.3" && make all " returned error 2 ... make: *** [libz.a] Error 1 Error: Unable to upgrade port: 1 -- View this message in context: http://www.nabble.com/zlib-upgrade-tp16239676p16239676.html Sent from the MacPorts - Users mailing list archive at Nabble.com.