In the last episode (Dec 10), Martin Nilsson (hehe Torgny) @ Pike (-) developers forum said:
I think we've just identified it as broken. Wasn't there a configure test to make sure the tiff glue didn't build with tifflib 4.2?
And I don't think it has been decided that tifflib is broken; the API may have changed and no-one has looked closely at the module source to determine what's wrong.