libfields-camlp4-dev software package provides OCaml syntax extension that enables folding over record fields, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libfields-camlp4-dev
libfields-camlp4-dev is installed in your system.
Make ensure the libfields-camlp4-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libfields-camlp4-dev *
You will get with libfields-camlp4-dev package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Ocaml |
| Package | libfields-camlp4-dev |
| Version | 109.20.03-1+b1 |
| Description | OCaml syntax extension that enables folding over record fields |
| Sub Section | Ocaml |