fontconfig-config software package provides generic font configuration library - configuration, 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 fontconfig-config
fontconfig-config is installed in your system.
Make ensure the fontconfig-config package were installed using the commands given below,
$ sudo dpkg-query -l | grep fontconfig-config *
You will get with fontconfig-config package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Fonts |
| Package | fontconfig-config |
| Version | 2.11.0-6.3+deb8u1 |
| Description | generic font configuration library - configuration |
| Sub Section | Fonts |