The final section of this book contains information that is not central to the goals ofthe book, but you might find it useful for unusual situations. Appendix A lists the options that the GNU make command accepts on the command line. Appendix B, which you will find amusing and possibly useful, stretches make to act as a general-purpose programming language with data structures and arithmetic operations. Appendix C contains the free license for the book.
Appendix A, Running make Makefile
Appendix B, The Outer Limits
Appendix C, GNU Free Documentation License ”GNU Project ”Free Software Foundation (FSF)