libpqxx3-dev software package provides C++ library to connect to PostgreSQL (development 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 libpqxx3-dev
libpqxx3-dev is installed in your system.
Make ensure the libpqxx3-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libpqxx3-dev *
You will get with libpqxx3-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libpqxx3-dev |
| Version | 1:3.1.1-0ubuntu4 |
| Description | C++ library to connect to PostgreSQL (development files) |
| Sub Section | libdevel |