## Appendix C Installing the GNU C Library

Before you do anything else, you should read the FAQ at http://sourceware.org/glibc/wiki/FAQ. It answers common questions and describes problems you may experience with compilation and installation.

Features can be added to the GNU C Library via add-on bundles. These are separate tar files, which you unpack into the top level of the source tree. Then you give `configure` the ‘`--enable-add-ons`’ option to activate them, and they will be compiled into the library.

You will need recent versions of several GNU tools: definitely GCC and GNU Make, and possibly others. See Tools for Compilation, below.