libqtassistantclient-dev software package provides Qt Assistant client library (development), 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 libqtassistantclient-dev
libqtassistantclient-dev is installed in your system.
Make ensure the libqtassistantclient-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libqtassistantclient-dev *
You will get with libqtassistantclient-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libqtassistantclient-dev |
| Version | 4.6.3-6 |
| Description | Qt Assistant client library (development) |
| Sub Section | libdevel |