lib64objc3-dbg software package provides Runtime library for GNU Objective-C applications (64 bit debug symbols), 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 lib64objc3-dbg
lib64objc3-dbg is installed in your system.
Make ensure the lib64objc3-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep lib64objc3-dbg *
You will get with lib64objc3-dbg package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Debug packages |
| Package | lib64objc3-dbg |
| Version | 4.6.4-6ubuntu2 |
| Description | Runtime library for GNU Objective-C applications (64 bit debug symbols) |
| Sub Section | debug |