ioquake3-dbg software package provides debug symbols for the ioquake3 game engine, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ioquake3-dbg
ioquake3-dbg is installed in your system.
Make ensure the ioquake3-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep ioquake3-dbg *
You will get with ioquake3-dbg package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Debug packages |
| Package | ioquake3-dbg |
| Version | 1.36+u20140802+gca9eebb-2+b1 |
| Description | debug symbols for the ioquake3 game engine |
| Sub Section | Debug |