RTFM: https://www.gnu.org/software/make/manual/make.html
Books:
* https://www.amazon.fr/Make-Reference-Manual-Richard-Stallman/dp/9881443512/ref=sr_1_1?ie=UTF8&qid=1480523162&sr=8-1&keywords=make+reference+manual
* https://www.amazon.fr/GNU-Make-Book-John-Graham-cunning/dp/1593276494/ref=sr_1_2?ie=UTF8&qid=1480523183&sr=8-2&keywords=gnu+make