libgksu2-dev software package provides library providing su and sudo functionality (development files), 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 libgksu2-dev
libgksu2-dev is installed in your system.
Make ensure the libgksu2-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgksu2-dev *
You will get with libgksu2-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Library development |
| Package | libgksu2-dev |
| Version | 2.0.13~pre1-8 |
| Description | library providing su and sudo functionality (development files) |
| Sub Section | Libdevel |