Just run: cpan -i Tk Duh ... the source needs to be altered, doesn't it :-(
Download https://cpan.metacpan.org/authors/id/S/SR/SREZIC/Tk-804.035.tar.gz cd to your local directory in which Tk-804.035.tar.gz resides.
Run: tar zxvf Tk-804.035.tar.gz Run: cd Tk-804.035 Make the changes to encGlue.c specified in the earlier part of this thread.
Run: perl Makefile.PL Run: gmake test Run: gmake install