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Download Qt 6 Source 💢

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How to Download Qt 6 Source Code

Qt 6 is the latest version of the popular cross-platform application development framework that lets you create intuitive user interfaces for multiple devices and platforms. In this article, you will learn how to download Qt 6 source code from different sources and how to build it on your preferred platform.

What is Qt 6 and why you should use it

Qt 6 is the first major release of Qt in the Qt 6 series, which aims to provide a higher degree of freedom to implement new features, functionality, and better support today and tomorrow’s requirements. Qt 6 is a continuation of the Qt 5 series and should not be disruptive for users to migrate on.

Qt 6 features and benefits

Some of the key changes and improvements in Qt 6 include:

  • Leveraging C++17 for more modern and expressive code
  • Next generation QML for faster and easier UI development
  • New graphics architecture for more flexibility and performance
  • Unified 2D and 3D for Qt Quick for seamless integration of 2D and 3D content
  • CMake build system for more standard and robust configuration
  • Multiple improvements throughout the framework for enhanced functionality and usability

Qt 6 lets you develop applications that are beautiful in the front-end and powerful in the back-end, with the same codebase for any hardware, any OS, or on bare metal. You can also use Qt Design Studio and Qt Creator to design, code, test, and deploy your applications with ease.

Qt 6 license and pricing

Qt 6 is available under different licensing options designed to accommodate the needs of various users:

  • Qt licensed under commercial licenses is appropriate for development of proprietary/commercial software where you do not want to share any source code with third parties or otherwise cannot comply with the terms of the GNU LGPL version 3.
  • Qt licensed under the GNU Lesser General Public License (LGPL) version 3 is appropriate for the development of Qt applications provided you can comply with the terms and conditions of the GNU LGPL version 3 (or GNU GPL version 3).
  • Qt components licensed under the Qt Marketplace License Agreement are appropriate for the development of Qt applications commonly with Qt software components licensed under the commercial or GNU LGPL version 3 (or GNU GPL version 3) terms and conditions.

You can purchase a Qt license from the Qt website. For further information and assistance about Qt licensing, contact the sales team.

How to get Qt 6 source code from different sources

You can get Qt 6 source code from various sources depending on your needs and preferences. Here are some of the most common ways to obtain Qt 6 source code:

Qt Online Installer

The easiest way to get Qt 6 source code is to use the Qt Online Installer, which gives you the choice of installing only the modules and tools you need to develop on a particular desktop platform and to run your applications on one or several desktop platforms, mobile or embedded devices, or MCUs. You need to create a Qt Account to use the online installer.

Qt Account Portal

If you are a commercial customer, you can download the source packages from your < a href="">Qt Account Portal. You can also access the source code for the Qt Marketplace components that you have purchased or downloaded from there.

Qt Git Repository

If you want to get the latest development version of Qt 6 or contribute to the Qt project, you can clone the Qt Git Repository and check out the dev branch. You can also browse the repository online and view the commit history, branches, tags, and code reviews.

How to build Qt 6 from source on different platforms

Once you have obtained the Qt 6 source code, you can build it on your preferred platform by following the instructions in the Qt Documentation. Here is a brief overview of the steps involved for some of the most common platforms:

Windows

To build Qt 6 on Windows, you need to have the following prerequisites:

  • A supported compiler, such as Microsoft Visual C++ or MinGW-w64
  • CMake version 3.16 or later
  • Ninja version 1.10.0 or later
  • Perl version 5.14 or later
  • Python version 3.6 or later
  • An OpenGL driver that supports OpenGL 2.0 or higher

The basic steps to build Qt 6 on Windows are:

  1. Create a build directory and change to it
  2. Run CMake to configure the build options and generate the build files
  3. Run Ninja to compile and install Qt 6
  4. Add the bin directory of the installed Qt 6 to your PATH environment variable

macOS

To build Qt 6 on macOS, you need to have the following prerequisites:

  • Xcode version 11.0 or later with command-line tools installed
  • CMake version 3.16 or later
  • Ninja version 1.10.0 or later
  • Perl version 5.14 or later
  • Python version 3.6 or later
  • An OpenGL driver that supports OpenGL 2.0 or higher (optional)

The basic steps to build Qt 6 on macOS are:

  1. Create a build directory and change to it
  2. Run CMake to configure the build options and generate the build files
  3. Run Ninja to compile and install Qt 6
  4. Add the bin directory of the installed Qt 6 to your PATH environment variable

Linux/X11

To build Qt 6 on Linux/X11, you need to have the following prerequisites:

  • A supported compiler, such as GCC or Clang
  • CMake version 3.16 or later
  • Ninja version 1.10.0 or later
  • Perl version 5.14 or later
  • Python version 3.6 or later
  • An OpenGL driver that supports OpenGL ES 2.0 or higher (optional)
  • X11 development packages (optional)
  • Wayland development packages (optional)

The basic steps to build Qt 6 on Linux/X11 are:

  1. Create a build directory and change to it
  2. Run CMake to configure the build options and generate the build files
  3. Run Ninja to compile and install Qt 6
  4. Add the bin directory of the installed Qt 6 to your PATH environment variable

Android

To build Qt 6 for Android, you need to have the following prerequisites:

  • A supported compiler, such as GCC or Clang
  • CMake version 3.16 or later
  • Ninja version 1.10.0 or later
  • Perl version 5.14 or later
  • Python version 3.6 or later
  • An OpenGL driver that supports OpenGL ES 2.0 or higher (optional)
  • The Android SDK and NDK
  • The Java Development Kit (JDK)

The basic steps to build Qt 6 for Android are:

  1. Create a build directory and change to it
  2. Run CMake with the -DCMAKE_TOOLCHAIN_FILE option pointing to the android.toolchain.cmake file in the Android NDK
  3. Run Ninja to compile and install Qt 6
  4. Add the bin directory of the installed Qt 6 to your PATH environment variable
  5. Set the ANDROID_NDK_ROOT and ANDROID_SDK_ROOT environment variables to point to the Android NDK and SDK directories

iOS

To build Qt 6 for iOS, you need to have the following prerequisites:

  • Xcode version 11.0 or later with command-line tools installed
  • CMake version 3.16 or later
  • Ninja version 1.10.0 or later
  • Perl version 5.14 or later
  • Python version 3.6 or later
  • An OpenGL driver that supports OpenGL ES 2.0 or higher (optional)

The basic steps to build Qt 6 for iOS are:

  1. Create a build directory and change to it
  2. Run CMake with the -DCMAKE_TOOLCHAIN_FILE option pointing to the ios.toolchain.cmake file in the Qt source directory
  3. Run Ninja to compile and install Qt 6
  4. Add the bin directory of the installed Qt 6 to your PATH environment variable

Conclusion

In this article, you have learned how to download Qt 6 source code from different sources and how to build it on your preferred platform. Qt 6 is a powerful and versatile framework that lets you create cross-platform applications with ease and efficiency. Whether you are a beginner or an expert, Qt 6 has something for you.

FAQs

What are the system requirements for Qt 6?

The system requirements for Qt 6 vary depending on the platform and the modules you want to use. You can check the Qt Documentation for more details.

How can I update Qt 6 to the latest version?

If you have installed Qt 6 using the online installer, you can update it by running the Maintenance Tool in the installation directory. If you have downloaded the source code from another source, you can either download the latest source code package or clone the latest branch from the Git repository.

How can I migrate my Qt 5 applications to Qt 6?

Qt 6 is designed to be compatible with Qt 5 as much as possible, but some changes and improvements may require you to adapt your code accordingly. You can use the Qt Upgrade Assistant tool to help you identify and fix potential issues in your code. You can also refer to the Qt Porting Guide for more information and tips.

How can I get help and support for Qt 6?

If you are a commercial customer, you can get help and support from the Qt Support Team. If you are using Qt under an open source license, you can get help and support from the Qt Community, which includes forums, mailing lists, blogs, wikis, IRC channels, and more.

How can I contribute to Qt 6?

If you want to contribute to Qt 6, you can do so by reporting bugs, suggesting improvements, submitting patches, writing documentation, translating texts, creating examples, testing releases, and more. You can find out how to get involved in the Qt Contribution Guide.

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