[ns3:~/linkrabbit] administrator% sudo cpan install XML::LibXML
Loading internal null logger. Install Log::Log4perl for logging messages
CPAN: Storable loaded ok (v2.56)
Reading '/Users/administrator/.cpan/Metadata'
  Database was generated on Sun, 11 Feb 2018 22:17:03 GMT
Running install for module 'XML::LibXML'
CPAN: Digest::SHA loaded ok (v5.95)
CPAN: Compress::Zlib loaded ok (v2.069)
Checksum for /Users/administrator/.cpan/sources/authors/id/S/SH/SHLOMIF/XML-LibXML-2.0132.tar.gz ok
CPAN: YAML loaded ok (v1.24)
CPAN: CPAN::Meta::Requirements loaded ok (v2.140)
CPAN: Parse::CPAN::Meta loaded ok (v1.4417)
CPAN: CPAN::Meta loaded ok (v2.150005)
CPAN: Module::CoreList loaded ok (v5.20160506)
Configuring S/SH/SHLOMIF/XML-LibXML-2.0132.tar.gz with Makefile.PL
enable native perl UTF8
running xml2-config...failed
The installed version of libxml2 VERSION 2.9.4
 is not compatible with XML::LibXML (and probably buggy)!