libmozjs185-dev software package provides Spidermonkey javascript library - development headers, 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 libmozjs185-dev
libmozjs185-dev is installed in your system.
Make ensure the libmozjs185-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libmozjs185-dev *
You will get with libmozjs185-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libmozjs185-dev |
| Version | 1.8.5-1.0.0+dfsg-4ubuntu1 |
| Description | Spidermonkey javascript library - development headers |
| Sub Section | libdevel |