libgcal-dev software package provides Google calendar and contacts (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 libgcal-dev
libgcal-dev is installed in your system.
Make ensure the libgcal-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libgcal-dev *
You will get with libgcal-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Library development |
| Package | libgcal-dev |
| Version | 0.9.6-3.2 |
| Description | Google calendar and contacts (development files) |
| Sub Section | Libdevel |