Re, My last post to ports@ give me an idea :At the end of "make configure" adding a grep to check if there is one "ld returned 1 exit status" in config.log. If yes "make build" shouldn't be launched and the port should be marked as broken. Without this check you can build a package who can have some bugs, "lazy binding failed!" for example.
It this happens for kdemultimedia, perhaps it happens for other port.