pth-dbg software package provides GNU Portable Threads (debug), 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 pth-dbg
pth-dbg is installed in your system.
Make ensure the pth-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep pth-dbg *
You will get with pth-dbg package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | pth-dbg |
| Version | 2.0.7-19ubuntu1 |
| Description | GNU Portable Threads (debug) |
| Sub Section | libdevel |