We have a similar looking error. Although not exactly the same.

Error....

Can't load '/usr/local/lib/perl5/site_perl/5.8.7/sun4-solaris/auto/XML/Xerces/Xerces.so' for module XML::Xerces: ld.so.1: /usr/bin/perl: fatal: relocation error: file /usr/local/lib/perl5/site_perl/5.8.7/sun4-solaris/auto/XML/Xerces/Xerces.so: symbol _ZN11xercesc_2_56XMLUni22fgUCS4LEncodingString2E: referenced symbol not found at /usr/local/lib/perl5/5.8.7/sun4-solaris/DynaLoader.pm line 230. at /usr/local/lib/perl5/site_perl/5.8.7/sun4-solaris/XML/Xerces.pm line 7

We have used these two guides to attempt the installation of Xerces...

http://xml.apache.org/xerces-c/build-winunix.html#UNIX

We follow the install.txt file

set XERCESCROOT
perl Makefile.PL
make
make test (which is never 100% ok)
make install

Are we leaving something out of install process?

Thanks john