include-what-you-use command not found

Introduction

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

include-what-you-use: command not found

or when using sudo you get the following error message

sudo: include-what-you-use: command not found

Solutions to include-what-you-use: command not found

How To Fix include-what-you-use: command not found in Ubuntu / Debian / Kali Linux / Raspbian

In Ubuntu include-what-you-use is provided by iwyu package.

iwyu is:

“Include what you use” means this: for every symbol (type, function variable, or macro) that you use in foo.cc, either foo.cc or foo.h should #include a .h file that exports the declaration of that symbol. The include-what-you-use tool is a program that can be built with the clang libraries in order to analyze #includes of source files to find include-what-you-use violations, and suggest fixes for them.

The main goal of include-what-you-use is to remove superfluous #includes. It does this both by figuring out what #includes are not actually needed for this file (for both .cc and .h files), and replacing #includes with forward-declares when possible.

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

sudo apt-get -y install iwyu

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

You can also use apt command to install iwyu.

sudo apt -y install iwyu

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

sudo aptitude install iwyu

Summary

In this tutorial we learn how to fix include-what-you-use command not found error in Ubuntu / Debian / Kali Linux or Raspbian distribution.