Actually once you have working Tcl/Tk widget, it could be available to Perl (even with perlTk syntax) *without* extra code, using Tcl::Tk module.

For example I use in my applications pure-Tcl widgets, and therefore have much richier widget set than perlTk.

So my advice would be not to find any compilation issues but rather use ready-to-use Tcl widget.

As for latest development news for that module, now Jeff Hobbs (lead TCL developer), Gisle Aas, Jan Dubois spend their effort for it.

Very latest sources of Tcl::Tk module could be obtained from http://cvs.sourceforge.net/viewcvs.py/tcltkce/
Fresh and more capable release will be on CPAN immediately after this weekend.

update: corrected a typo in Jan's name

Courage, the Cowardly Dog