GNU make is the most widely used build automation tool, but it can be challenging to master and its terse language can be tough to parse for even experienced programmers. Those who run into difficulties face a long, involved struggle, often leaving unsolved problems behind and GNU make's vast potential untapped.The GNU Make Book demystifies GNU make and shows you how to use its best features. You'll find a fast, thorough rundown of the basics of variables, rules, targets, and makefiles. Learn how to fix wastefully long build times and other common problems, and gain insight into more advanced capabilities, such as complex pattern rules. With this utterly pragmatic manual and cookbook, you'll make rapid progress toward becoming a more effective user.You'll also learn how to:Master user-defined functions, variables, and path handlingWeigh the pitfalls and advantages of GNU make parallelizationHandle automatic dependency generation, rebuilding, and non-recursive makeModify the GNU make source and take advantage of the GNU Make Standard LibraryCreate makefile assertions and debug makefilesGNU make is known for being tricky to use, but it doesn't have to be. If you're looking for a deeper understanding of this indispensable tool, you'll find The GNU Make Book to be an indispensable guide.