after compiling your external (with tk2c.bash copied in /usr/bin beforehand)
you don't have to, I guess. tk2c it's just a script for embedding tk into C source files.
/usr/local/lib/pd/extra/tracker.pd_linux: /usr/local/lib/pd/extra/tracker.pd_linux: undefined symbol: binbuf_read_via_canvas
it seems to require at least pd-0.40-3
also: people getting 'invalid command name "pdtk_tracker_dialog"' error, probably have trouble running that script. please try running manually:
./tk2c.bash < tracker.tk > tracker.tk2c
hope this helps
-- Federico Ferri