libatk-adaptor software package provides AT-SPI 2 toolkit bridge, 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 libatk-adaptor
libatk-adaptor is installed in your system.
Make ensure the libatk-adaptor package were installed using the commands given below,
$ sudo dpkg-query -l | grep libatk-adaptor *
You will get with libatk-adaptor package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Miscellaneous |
| Package | libatk-adaptor |
| Version | 2.10.2-2ubuntu1 |
| Description | AT-SPI 2 toolkit bridge |
| Sub Section | misc |