Qt for Python/GettingStarted/Windows: Difference between revisions

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The Qt library has to be built with the same version of MSVC as Python and PySide2, this can be selected when using the online installer.   
 
The Qt library has to be built with the same version of MSVC as Python and PySide2.   
                                                                                      
                                                                                      
==== Requirements ====                                                               
==== Requirements ====                                                               
* Qt package from https://www.qt.io or a custom build of Qt (preferably '''Qt 5.9''' or '''Qt 5.6''')
* Qt package from https://www.qt.io or a custom build of Qt (preferably '''Qt 5.9''')
* Python from https://www.python.org/downloads/ ('''Python 3.6''' or '''Python 2.7''')
* Python from https://www.python.org/downloads/ ('''Python 3.6''' or '''Python 2.7''')
* [http://landinghub.visualstudio.com/visual-cpp-build-tools MSVC2015] (for Python 3 on Windows), MSCVC2008 (for Python 2 on Windows)         
* [http://landinghub.visualstudio.com/visual-cpp-build-tools MSVC2015] (for Python 3 on Windows), MSCVC2008 (for Python 2 on Windows)         
* CMake from https://cmake.org/download/ ('''>= 3.1''')                               
* CMake from https://cmake.org/download/ ('''>= 3.1''')                               
* libclang (required for the 5.9 and dev branches) from [http://download.qt.io/development_releases/prebuilt/libclang/ download.qt.io] ('''>= 3.9''')
* libclang (required for the 5.9 and dev branches) from [http://download.qt.io/development_releases/prebuilt/libclang/ download.qt.io] ('''>= 3.9''')                                                        
* [https://llvm.org/ LLVM]                                                         
* virtualenv (optional but recommended)                                                 
* virtualenv (optional but recommended)                                                 
* Python sphinx package for documentation (optional, pip install sphinx)                 
* Python sphinx package for documentation (optional, pip install sphinx)                 
=== Building from sources on Windows 10 ===
The following steps are performed on the command prompt (''cmd'').
A 64bit infrastructure is assumed in the procedure, but if the host is a 32bit environment it is possible to just download the proper architecture packages.
==== Setting up CLANG ====
* Download [http://download.qt.io/development_releases/prebuilt/libclang/ libclang], e.g.
[http://download.qt.io/development_releases/prebuilt/libclang/libclang-release_39-windows-vs2015_64.7z http://download.qt.io/development_releases/prebuilt/libclang/libclang-release_39-windows-vs2015_64.7z]
* Extract the files, e.g. using [http://www.7-zip.org/ 7zip]                       
* Move the directory ''libclang'' to any desire path, e.g ''c:\'', and then set an environment variable with the new path:
set LLVM_INSTALL_DIR=c:\libclang                                             
                                                                                   
==== Getting PySide2 ====                                                 
* You must [https://git-scm.com/download/win download git] in order to clone the repository.
* Clonning the official repository
git clone --recursive https://codereview.qt-project.org/pyside/pyside-setup       
* Checking out the version that we want to build, e.g. 5.9 (Keep in mind you need to use the same version as your Qt installation)
cd pyside-setup && git checkout 5.9                                                               
==== Building PySide2 ====                                               
* You must [https://www.python.org/downloads/windows/ download Python] to build PySide2 (3.6 is recommended)
* Check your Qt installation path, to specifically use that version of ''qmake'' to build PySide2.
e.g. ''E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe''
* Build can take a few minutes, so it is recommended to use more than one CPU core (e.g. 8). Remember to replace the paths to your current ''qmake'' path:
python setup.py build --qmake=E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe  --build-tests --ignore-git --jobs=8
                                                                                   
==== Installing PySide2 ====                                     
* To install on the current directory, just run:
python setup.py install --qmake=E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe --build-tests --ignore-git --jobs=8
                                                                                   
==== Test installation ====                                                     
* You can execute one of the examples to verify the process is properly working.
* Remember to properly set the environment variables for Qt and PySide2.
python examples/examples/widgets/widgets/tetrix.py
                                                                                          
                                                                                          
== Development ==                                                                       
== Development ==                                                                       

Revision as of 10:06, 29 January 2018

The Qt library has to be built with the same version of MSVC as Python and PySide2, this can be selected when using the online installer.

Requirements

Building from sources on Windows 10

The following steps are performed on the command prompt (cmd). A 64bit infrastructure is assumed in the procedure, but if the host is a 32bit environment it is possible to just download the proper architecture packages.

Setting up CLANG

http://download.qt.io/development_releases/prebuilt/libclang/libclang-release_39-windows-vs2015_64.7z
  • Extract the files, e.g. using 7zip
  • Move the directory libclang to any desire path, e.g c:\, and then set an environment variable with the new path:
set LLVM_INSTALL_DIR=c:\libclang                                               
                                                                                    

Getting PySide2

  • You must download git in order to clone the repository.
  • Clonning the official repository
git clone --recursive https://codereview.qt-project.org/pyside/pyside-setup         
  • Checking out the version that we want to build, e.g. 5.9 (Keep in mind you need to use the same version as your Qt installation)
cd pyside-setup && git checkout 5.9                                                                 

Building PySide2

  • You must download Python to build PySide2 (3.6 is recommended)
  • Check your Qt installation path, to specifically use that version of qmake to build PySide2.

e.g. E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe

  • Build can take a few minutes, so it is recommended to use more than one CPU core (e.g. 8). Remember to replace the paths to your current qmake path:
python setup.py build --qmake=E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe  --build-tests --ignore-git --jobs=8
                                                                                    

Installing PySide2

  • To install on the current directory, just run:
python setup.py install --qmake=E:\Qt\5.9.4\msvc2015_64\bin\qmake.exe --build-tests --ignore-git --jobs=8
                                                                                    

Test installation

  • You can execute one of the examples to verify the process is properly working.
  • Remember to properly set the environment variables for Qt and PySide2.
python examples/examples/widgets/widgets/tetrix.py


Development

Development happens in the 5.9 and dev branches of the pyside-setup repository.

The top level repository has the following submodules:

  • sources/pyside2-tools: uic, rcc tools
  • examples/

Contributions follow the standard process.

It is helpful to have debug binaries and/or symbols for Python available. On Windows, this is done by choosing Customized Installation when installing Python and ticking the respective check boxes.

It is also recommended to use a Virtual Environment for testing to be able to always start from a clean base and avoid issues with write permissions in installations.

On Windows an installation step may be required:

python -m pip install virtualenv                                                       
python -m virtualenv testenv                                                           
                                                                                       

The Virtual Environment is activated by·

CALL testenv\Scripts\activate.bat                                                                                                                                                                                                           
                                                                                       

Before building the first time, the module Sphinx should be installed into the virtual environment:·

pip install sphinx