Linux

NOTE: These instructions apply to the git version.

1. Install git.
2. Install SDL2 development.
3. Check out the source from git://github.com/ioquake/ioq3.git with git clone git://github.com/ioquake/ioq3.git
4. Change to the ioq3 directory
5. Run make

Cross-compile for Windows

1. Install git.
2. Install mingw-w64.
3. Check out the source from git://github.com/ioquake/ioq3.git with git clone git://github.com/ioquake/ioq3.git
4. Change to the ioq3 directory
5. Run make PLATFORM=mingw32 ARCH=x86 or make PLATFORM=mingw32 ARCH=x86_64