How To Install include-what-you-use on Ubuntu 22.04

In this guide, we’ll discuss How To Install include-what-you-use on Ubuntu 22.04. Also, we will demonstrate how to uninstall and update include-what-you-use.

One-liner install command

For those in a hurry, here's a one-line installation command:

sudo apt-get update && sudo apt -y install iwyu

But if you are interested in the detailed steps with descriptions, the following information is for you.

What is include-what-you-use and what are the ways to install it?

Before beginning this tutorial, you will need access to a server or computer running Ubuntu 22.04. This guide was written specifically with a server running Ubuntu 22.04 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install include-what-you-use on Ubuntu 22.04. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install include-what-you-use using apt-get

First, update apt database with apt-get using the following command.

sudo apt-get update

After updating apt-get database, You can install include-what-you-use using apt by running the following command:

sudo apt -y install iwyu

Install include-what-you-use using apt

Because include-what-you-use is available in Ubuntu 22.04’s default repositories, it is possible to install it from these repositories using the apt packaging system.

To begin, update apt database with apt using the following command.

sudo apt update

After updating apt database, You can install include-what-you-use using apt by running the following command:

sudo apt -y install iwyu

Install include-what-you-use using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu 22.04. Update apt database with aptitude using the following command.

sudo aptitude update

After updating aptitude database, You can install include-what-you-use by running the following command:

sudo aptitude -y install iwyu

How to upgrade (update) a single package include-what-you-use using apt-get?

First, you will need to update packages index. Run update command as usual:

sudo apt-get update

Next, to upgrade only the include-what-you-use, e.g. single package, you should use the following format with the apt-get command/apt command:

sudo apt-get --only-upgrade install iwyu

Note that this command will not install any new packages! If you wish to install the package if it doesn't exist you may leave out --only-upgrade part.

How To Uninstall include-what-you-use from Ubuntu 22.04

To uninstall only the include-what-you-use package you can execute the following command:

sudo apt-get remove iwyu

Uninstall include-what-you-use and all its dependencies

To uninstall include-what-you-use and its dependencies that are no longer needed by Ubuntu 22.04, you can use the command below:

sudo apt-get -y autoremove iwyu

Remove include-what-you-use with all configurations and data

To remove include-what-you-use configuration and data from your system you can run the following purge command:

sudo apt-get -y purge iwyu

Remove include-what-you-use completely (configurations, data and all of its dependencies)

And lastly, you can run the next command to remove absolutely everything related to include-what-you-use package, e.g.: configurations, data and all of its dependencies. Just use this command:

sudo apt-get -y autoremove --purge iwyu

Extra info and code examples

"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.

Conclusion

You now have a full guide on how to install include-what-you-use using apt, apt-get and aptitude tools. Also, we showed how to update as a single package and different ways to uninstall the include-what-you-use from Ubuntu 22.04.

See also:

How To Install include-what-you-use on CentOS 8

How To Install include-what-you-use on Kali Linux

How To Install include-what-you-use on Debian 11

How To Install include-what-you-use on Ubuntu 22.04

How To Install include-what-you-use on Ubuntu 21.04

How To Install include-what-you-use on Fedora 34

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