I don't know about POSIX make, but GNU make you can run "make -p -f/dev/null" to get a dump of all the built in rules it has. And if you don't want to run thos

I don't know about POSIX make, but GNU make you can run "make -p -f/dev/null" to get a dump of all the built in rules it has. And if you don't want to run those, you can always use "make -r" to have it ignore built in rules.