man entry for GNU make
C-h i or
M-x info and scroll down until you find:
* Make: (make.info). The GNU `make' utility for automatic and orderly
recompilation of large codes.
Place your cursor on that line and press return.
/afs/ovpit.indiana.edu/common/gnu/doc/make-3.76.1
http://beige.ucs.indiana.eduA pointer to the PostScript version of ``GNU Make'' document is about 3/4 down the page.