Getting Started on Windows#
The Qt library has to be built with the same version of MSVC as Python and PySide, this can be selected when using the online installer.
Python 3.8.0 was missing some API required for PySide/Shiboken so it’s not possible to use it for a Windows build.
Building from source on Windows 10#
Creating a virtual environment#
venv module allows you to create a local, user-writeable copy of a python environment into
which arbitrary modules can be installed and which can be removed after use:
python -m venv testenv call testenv\Scripts\activate
will create and use a new virtual environment, which is indicated by the command prompt changing.
Setting up CLANG#
libclang can be downloaded from the
Note that from version 12 onwards, the prebuilt Windows binaries from LLVM no longer contain CMake configuration files; so they can no longer be used.
Extract the files, and leave it on any desired path, for example,
and set the environment variable required:
set LLVM_INSTALL_DIR=c:\libclang set PATH=C:\libclang\bin;%PATH%
Cloning the official repository can be done by:
git clone https://code.qt.io/pyside/pyside-setup
Checking out the version that we want to build, for example, 6.4:
cd pyside-setup && git checkout 6.4
Install the general dependencies:
pip install -r requirements.txt
Keep in mind you need to use the same version as your Qt installation
Check your Qt installation path, to specifically use that version of qtpaths to build PySide.
Build can take a few minutes, so it is recommended to use more than one CPU core:
python setup.py build --qtpaths=c:\path\to\qtpaths.exe --openssl=c:\path\to\openssl\bin --build-tests --ignore-git --parallel=8
Creating Debug Builds#
Choose Custom Installation when installing Python and tick the options for debug binaries and libraries
venvto create a virtual environment and pass the debug binary:
python_d.exe -m venv testenv_d
To install on the current directory, just run:
python setup.py install --qtpaths=c:\path\to\qtpaths.exe --openssl=c:\path\to\openssl\bin --build-tests --ignore-git --parallel=8
You can execute one of the examples to verify the process is properly working. Remember to properly set the environment variables for Qt and PySide: