Not sure, I would check with ldd 
#!/usr/bin/perl --

use strict;
use warnings;

use XML::LibXML;
use XML::Parser;

for my $so( grep /xml/i, @DynaLoader::dl_shared_objects ){
  print "$so\n";
  print `ldd $so\n`;
}
__END__

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In reply to Re^3: Benchmarks of XML Parsers by Anonymous Monk
in thread Benchmarks of XML Parsers by ikegami

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