libgail-3-0-dbg software package provides Gail libraries and debugging symbols, 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 libgail-3-0-dbg
libgail-3-0-dbg is installed in your system.
Make ensure the libgail-3-0-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgail-3-0-dbg *
You will get with libgail-3-0-dbg package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Debug packages |
| Package | libgail-3-0-dbg |
| Version | 3.14.5-1+deb8u1 |
| Description | Gail libraries and debugging symbols |
| Sub Section | Debug |