Qt for Windows - Building from Source
Qt sources can be installed in the Qt Online Installer. Source packages are also available as Git repositories, as archives in the Qt Account (commercial users), and on download.qt.io (open-source users).
If you install the sources through the Qt Online Installer, they will be available in the Qt installation directory, for instance
If you downloaded the source archive, extract it to a directory of your choice, for instance
Note: The path to the source directory must not contain any spaces or Windows specific file system characters. The path should also be kept short. This avoids issues with too long file paths in the compilation phase.
To build Qt from sources you need a build environment with a supported compiler and various build tools available:
- CMake (available in the Qt online installer)
- Ninja (available in the Qt online installer)
- ActivePerl - Install a recent version of ActivePerl (download page).
- Python - Install Python from the here.
python.exe must be available in your build environment. You achieve this by adding the respective directory to your
PATH environment variable.
Note: Please make sure that the
perl executable from ActivePerl is found in the path before a potential perl executable provided by msysgit, since the latter is outdated.
The following compilers and configurations are supported in Qt 6.0:
|Windows 10||MSVC 2019, MinGW 8.1|
We recommend creating a desktop link that opens a command prompt with the environment set up similar to the Command Prompt menu entries provided by Visual Studio. This is done by creating an application link passing a
.cmd file setting up the environment and the command line option
/k (remain open) to
Assuming the file is called
qt6vars.cmd and the Qt folder is called
REM Set up Microsoft Visual Studio 2019, where <arch> is amd64, x86, etc. CALL "C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\VC\Auxiliary\Build\vcvarsall.bat" <arch> SET _ROOT=C:\Qt\6.0.4\Src SET PATH=%_ROOT%\qtbase\bin;%PATH% SET _ROOT=
A desktop link can then be created by specifying the command
%SystemRoot%\system32\cmd.exe /E:ON /V:ON /k C:\Qt\qt6vars.cmd as application.
Depending on your individual setup, you might also need to make the installation directories of CMake, ninja, Perl, and Python part of the
SET %PATH% line above.
Note: Setups for MinGW are similar; they differ only in that the
bin folder of the installation should be added to the path instead of calling the Visual Studio setup script. For MinGW, please make sure that no
sh.exe can be found in the path, as it affects
To configure the Qt library for your machine type, run the
configure.bat script in the source directory.
By default, Qt is configured for installation in the
C:\Program Files\Qt directory, but this can be changed by using the
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