lib64objc-4.8-dev software package provides Runtime library for GNU Objective-C applications (64bit 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 lib64objc-4.8-dev
lib64objc-4.8-dev is installed in your system.
Make ensure the lib64objc-4.8-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep lib64objc-4.8-dev *
You will get with lib64objc-4.8-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | lib64objc-4.8-dev |
| Version | 4.8.4-2ubuntu1~14.04.3 [i386], |
| Description | Runtime library for GNU Objective-C applications (64bit development files) |
| Sub Section | libdevel |