1.2 What the book is not
This book is not a definitive reference to Autoconf, Automake or Libtool. Attempting to do so would fill this book with information that is doomed to obsolescence. For instance, you will not find a description of every predefined macro provided by Autoconf. Instead, the book will attempt to help you understand any macro you encounter and, instead, influence how you approach software portability and package building. The GNU manual for each tool should be consulted as a reference.
This book briefly introduces pertinent concepts, but does not attempt to teach them comprehensively. You will find an introduction to writing `Makefile's and Bourne shell scripts, but you should consult other references to become familiar with these broader topics.