The makefile s shown throughout this book are industrial strength and quite suitable for adapting to your most advanced needs. But it's still worthwhile looking at some makefile s from real-life projects to see what people have done with make under the stress of providing deliverables. Here, we discuss several example makefile s in detail. The first example is the makefile to build this book. The second is the makefile used to build the 2.6.7 Linux kernel.