libgsl-dev software package provides GNU Scientific Library (GSL) -- development package, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libgsl-dev
libgsl-dev is installed in your system.
Make ensure the libgsl-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgsl-dev *
You will get with libgsl-dev package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Library development |
| Package | libgsl-dev |
| Version | 2.1+dfsg-2 |
| Description | GNU Scientific Library (GSL) -- development package |
| Sub Section | Devel |