That's really not necessary. Everyone here knows where to find the manual, and we all also know it has a considerable volume of information.
Not sure if you're being snarky, but the manual has a list of all options accepted by make: https://www.gnu.org/software/make/manual/html_node/Options-S...
(`make --help` will only print the most common options)
make --help
Will give you the command line options. And GNU make has decent documentation online for everything else:
https://www.gnu.org/software/make/manual/html_node/index.htm...
Maybe the make authors could compile a list of options somewhere and ship it with their program, so users could read them? Something like a text file or using some typesetting language. This would make that knowledge much more accessible.