libbox2d-dev software package provides 2D physics engine - 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 libbox2d-dev
libbox2d-dev is installed in your system.
Make ensure the libbox2d-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libbox2d-dev *
You will get with libbox2d-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Library development |
| Package | libbox2d-dev |
| Version | 2.3.1+ds-1 |
| Description | 2D physics engine - development files |
| Sub Section | Libdevel |