Had to download Command Line Tools from Apple to get make to work, but not sure if that's still the problem here?
cpan[8]> install HTML::Template
Running install for module 'HTML::Template'
Running make for W/WO/WONKO/HTML-Template-2.91.tar.gz
Has already been unwrapped into directory /Users/jaldama/.cpan/build/HTML-Template-2.91- 0bPiwL
Has already been made
Running make test
Has already been tested successfully
Running make install
Already tried without success