These libraries are required in order for Odamex to compile correctly. Please note that you probably want to download both the standalone runtime libraies and development libraries.
SDL
SDL is a crossplatform library used to display graphics. It is required in order to compile the Odamex client. The latest version of SDL is 1.2.11
SDL_mixer
Latest version is 1.2.7
wxWidgets
wxWidgets is a library used to display graphical user interfaces. It is required in order to compile OdaLauncher. The latest version of wxWidgets is 2.8.0
A special note if your operating system has repositories
Before downloading the libraries, check to see if these librares are included with your distribution or avalable to download through an automated package management system, such as apt or ports. If such packages are avalable, setting up your build environment will be substantially easier.