Thank you Olivier, As I mentioned I am inexperienced. I am rereading the man page more carefully again. BTW, I also tried to build myself from tarball and got a similar result, so I am thinking I must have a bad install/version of libxml2 as the undefined symbol is as follows. /usr/bin/ld: Undefined symbols: _xmlTextReaderSchemaValidate $ port installed libxml2 The following ports are currently installed: libxml2 @2.6.28_1 (active) $ ls -l *xml* -rwxr-xr-x 2 root admin 1254348 Jul 14 00:33 libxml2.2.6.28.dylib lrwxr-xr-x 1 root admin 20 Jul 14 00:34 libxml2.2.dylib -> libxml2.2.6.28.dylib lrwxr-xr-x 1 root admin 20 Jul 14 00:34 libxml2.dylib -> libxml2.2.6.28.dylib -rwxr-xr-x 2 root admin 859 Jul 14 00:33 libxml2.la -rw-r--r-- 2 root admin 265 Jul 14 00:33 xml2Conf.sh $ strings libxml2.2.6.28.dylib | grep xmlTextReaderSchemaValidate <no output, so the function must not be in the 2.2.6.28 library> Thanks for the pointers, Tom On Jul 14, 2007, at 12:47 PM, olivier SAINT-EVE wrote:

Hello Thomas,

be sure that (for example) openSSL is installed by typing "port installed", "port info aPort" does give you informations about a port even if you have not installed the port.

lolveley.