Probably the symbol xmlFree is not defined in the Common.so library and is needed by the linking. try 
nm blib/arch/auto/XML/LibXML/Common/Common.so|grep 'xmlFree'

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and see if the symbol name comes up with that name or a bit altered;I have seen cases that the symbol name looked up contained an underscore;ie. the function name that was called by the programm was iiseterr and inside the library it was iiseterr_.The underscore did the damage and the symbol could not be found.This was resolved by editing the program and adding an underscore

In reply to Re: XML::LibXML::Common 0.13 on linux - undefined symbol by nikosv
in thread XML::LibXML::Common 0.13 on linux - undefined symbol by joec_

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