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How To Install qt5-default on Ubuntu 21.04

Ubuntu 5

Ubuntu 21.04, also known as Hirsute Hippo, does not have the qt5-default package in its repository. This package was removed because it was considered obsolete and replaced with more specific packages. However, you can still set up your Ubuntu 21.04 system for Qt5 development by manually installing the necessary packages. This article will guide you through the process.

Quick Answer

To install qt5-default on Ubuntu 21.04, you will need to manually install the necessary packages for Qt5 development. The qt5-default package is no longer available in Ubuntu 21.04 and later versions. However, you can still set up your system by installing qtbase5-dev, qt5-qmake, and qtbase5-dev-tools packages. Additionally, you may want to install qtchooser if you have multiple versions of Qt installed.

Understanding the qt5-default Package

The qt5-default package was a meta-package that installed the necessary packages for Qt5 development. It was particularly useful because it allowed users to install all the required packages with a single command. However, this package is no longer available in Ubuntu 21.04 and later versions.

Installing the Necessary Packages

Even though qt5-default is not available, you can still install the necessary packages for Qt5 development. The main packages you need are qtbase5-dev and qt5-qmake. The qtbase5-dev package includes the development files for the Qt5 core library, while qt5-qmake is the build tool used by Qt5.

To install these packages, open a terminal and run the following command:

sudo apt-get install qtbase5-dev qt5-qmake qtbase5-dev-tools

This command uses the apt-get install command to install packages. The sudo command is used to run the command with root privileges, which are necessary for installing packages.

Verifying the Installation

After installing the packages, you can verify that they are correctly installed by checking the version of qmake. Run the following command in the terminal:

qmake -v

This command should output the version of qmake, which should be a version of Qt5.

Installing qtchooser

In some cases, you may need to install the qtchooser package. This package is a wrapper that allows you to choose between different versions of Qt when you have multiple versions installed.

To install qtchooser, run the following command in the terminal:

sudo apt-get install qtchooser

Conclusion

While the qt5-default package is not available in Ubuntu 21.04, you can still install the necessary packages for Qt5 development. By installing qtbase5-dev, qt5-qmake, and qtbase5-dev-tools, you can set up your system for Qt5 development. If you have multiple versions of Qt installed, you may also want to install qtchooser to easily switch between them.

Why was the `qt5-default` package removed from Ubuntu 21.04?

The qt5-default package was considered obsolete and replaced with more specific packages. It was removed from Ubuntu 21.04 and later versions to streamline the package management system.

What are the main packages needed for Qt5 development in Ubuntu 21.04?

The main packages needed for Qt5 development in Ubuntu 21.04 are qtbase5-dev and qt5-qmake. The qtbase5-dev package includes the development files for the Qt5 core library, while qt5-qmake is the build tool used by Qt5.

How can I install the necessary packages for Qt5 development in Ubuntu 21.04?

To install the necessary packages for Qt5 development in Ubuntu 21.04, open a terminal and run the command sudo apt-get install qtbase5-dev qt5-qmake qtbase5-dev-tools. This will install the required packages.

How can I verify that the packages are correctly installed?

After installing the packages, you can verify their installation by running the command qmake -v in the terminal. This will display the version of qmake, which should be a version of Qt5 if the packages are correctly installed.

Do I need to install the `qtchooser` package?

In some cases, you may need to install the qtchooser package. This package is a wrapper that allows you to choose between different versions of Qt when you have multiple versions installed. You can install it by running the command sudo apt-get install qtchooser in the terminal.

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