libgdk3.0-cil software package provides CLI binding for GDK 3, 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 libgdk3.0-cil
libgdk3.0-cil is installed in your system.
Make ensure the libgdk3.0-cil package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgdk3.0-cil *
You will get with libgdk3.0-cil package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Mono/CLI |
| Package | libgdk3.0-cil |
| Version | 2.99.3-2+b1 [s390x], 2.99.3-2 |
| Description | CLI binding for GDK 3 |
| Sub Section | Cli-mono |