libclassad-dev software package provides HTCondor classads expression language - development library, 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 libclassad-dev
libclassad-dev is installed in your system.
Make ensure the libclassad-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libclassad-dev *
You will get with libclassad-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Library development |
| Package | libclassad-dev |
| Version | 8.2.3~dfsg.1-6 |
| Description | HTCondor classads expression language - development library |
| Sub Section | Libdevel |