This fork is the Pandora port of Zandronum, but it can be compiled on other ARM based linux machine, like ODroid and RaspberryPI. It feature ARM support (there are some small changes to be done in the code for that, and no assembler involved) and OpenAL audio backend (FMOD is still there and can be selected too). It can optionnaly use OpenGL for rendering. In that case, no GLES code is written here, and use of GL Wrapper is needed most of the time. I use gl4es (https://github.com/ptitSeb/gl4es) on Pandora and ODroid.
Zandronum is a multiplayer oriented port, based off Skulltag, for Doom and Doom II by id Software.
Zandronum brings classic Doom into the 21st century, maintaining the essence of what has made Doom great for so many years and, at the same time, adding new features to modernize it, creating a fresh, fun new experience.
Here's why you should kill your time with Zandronum, versus vanilla Doom:
New code in Zandronum is released under a 4-clause license based on the OSI-approved and GPL-compatible Sleepycat License, with the addition of the "No Endorsement" clause from the 3-clause New BSD License. Practically, this means that Zandronum's source code is safe to use in either GPL or Doom Source License/Raven Source License/etc. source ports as long as the terms of the Zandronum license are satisfied.
The Zandronum license only covers Zandronum-specific code. Some source files contain additional notices of original copyright by their contributors.
See ZDoom license page for more details on other licenses used within Zandronum.