libmozjs-24-0-dbg software package provides Spidermonkey JavaScript engine (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 libmozjs-24-0-dbg
libmozjs-24-0-dbg is installed in your system.
Make ensure the libmozjs-24-0-dbg package were installed using the commands given below,
$ sudo dpkg-query -l | grep libmozjs-24-0-dbg *
You will get with libmozjs-24-0-dbg package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Debug packages |
| Package | libmozjs-24-0-dbg |
| Version | 24.2.0-1 |
| Description | Spidermonkey JavaScript engine (debug symbols) |
| Sub Section | debug |