libopal-dev software package provides OPAL library header files, 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 libopal-dev
libopal-dev is installed in your system.
Make ensure the libopal-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libopal-dev *
You will get with libopal-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libopal-dev |
| Version | 3.10.10~dfsg-2.1ubuntu3 |
| Description | OPAL library header files |
| Sub Section | libdevel |