perl Makefile.PL
make
make test
make install

##</code><code>##

Deep recursion on subroutine "Tree::_fix_height" at /home/spek/perl5/perlbrew/perls/perl-5.26.1/lib/site_perl/5.26.1/Tree.pm line 333.
Deep recursion on subroutine "Tree::_fix_width" at /home/spek/perl5/perlbrew/perls/perl-5.26.1/lib/site_perl/5.26.1/Tree.pm line 346.
Deep recursion on subroutine "Tree::event" at /home/spek/perl5/perlbrew/perls/perl-5.26.1/lib/site_perl/5.26.1/Tree.pm line 198.
success