libtelepathy-qt5-dev software package provides Qt 5 Telepathy library (headers and static library), you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libtelepathy-qt5-dev
libtelepathy-qt5-dev is installed in your system.
Make ensure the libtelepathy-qt5-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libtelepathy-qt5-dev *
You will get with libtelepathy-qt5-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libtelepathy-qt5-dev |
| Version | 0.9.3-0ubuntu13 |
| Description | Qt 5 Telepathy library (headers and static library) |
| Sub Section | libdevel |