gthumb-dev software package provides image viewer and browser - 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 gthumb-dev
gthumb-dev is installed in your system.
Make ensure the gthumb-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep gthumb-dev *
You will get with gthumb-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | gthumb-dev |
| Version | 3:3.3.1.is.3.2.7-0ubuntu1 |
| Description | image viewer and browser - development files |
| Sub Section | devel |