camlp4-extra software package provides Pre Processor Pretty Printer for OCaml - extras, 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 camlp4-extra
camlp4-extra is installed in your system.
Make ensure the camlp4-extra package were installed using the commands given below,
$ sudo dpkg-query -l | grep camlp4-extra *
You will get with camlp4-extra package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Development |
| Package | camlp4-extra |
| Version | 4.01.0-3ubuntu3 |
| Description | Pre Processor Pretty Printer for OCaml - extras |
| Sub Section | devel |