fp-units-base-2.6.4 software package provides Free Pascal - base units, 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 fp-units-base-2.6.4
fp-units-base-2.6.4 is installed in your system.
Make ensure the fp-units-base-2.6.4 package were installed using the commands given below,
$ sudo dpkg-query -l | grep fp-units-base-2.6.4 *
You will get with fp-units-base-2.6.4 package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Development |
| Package | fp-units-base-2.6.4 |
| Version | 2.6.4+dfsg-4 |
| Description | Free Pascal - base units |
| Sub Section | Devel |