libexpat-ocaml-dev software package provides OCaml expat bindings, 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 libexpat-ocaml-dev
libexpat-ocaml-dev is installed in your system.
Make ensure the libexpat-ocaml-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libexpat-ocaml-dev *
You will get with libexpat-ocaml-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libexpat-ocaml-dev |
| Version | 0.9.1+debian1-7build5 |
| Description | OCaml expat bindings |
| Sub Section | libdevel |