the main problem is that make itself doesn't support a concept of "hidden files". also a problem is that GNU make comes with lots of implicit rules, so you really need something like make -R -r -p for this to remotely work.
I tried that on a small Makefile with 4 simple rules, and it spit out 2436 lines of diagnostic information. Which to be fair is less then `make -p`'s 8687 lines, but it's still completely useless to me.
