camlp4 command not found

Introduction

When you run more command in linux terminal / console, you get the following error message

camlp4: command not found

or when using sudo you get the following error message

sudo: camlp4: command not found

Solutions to camlp4: command not found

How To Fix camlp4: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu camlp4 is provided by camlp4 package.

camlp4 is:

Camlp4 is a software system for writing extensible parsers for programming languages. It provides a set of OCaml libraries that are used to define grammars as well as loadable syntax extensions of such grammars. Camlp4 stands for Caml Preprocessor and Pretty-Printer and one of its most important applications is the definition of domain-specific extensions of the syntax of OCaml.

This package contains CamlP4 executables for pre-processing and pretty-printing OCaml sources both interactively and in a batch fashion.

To fix this problem, we can install more using the command below.

sudo apt-get -y install camlp4

This command might take some time to finish depending on your machine internet connection.

You can also use apt command to install camlp4.

sudo apt -y install camlp4

Or if you have aptitude installed you can use the following command.

sudo aptitude install camlp4

Summary

In this tutorial we learn how to fix camlp4 command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.