libfltk1.1-dev software package provides Fast Light Toolkit - 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 libfltk1.1-dev
libfltk1.1-dev is installed in your system.
Make ensure the libfltk1.1-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libfltk1.1-dev *
You will get with libfltk1.1-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libfltk1.1-dev |
| Version | 1.1.10-17 |
| Description | Fast Light Toolkit - development files |
| Sub Section | libdevel |