PySide2 (Qt for python) installation on Jetson Xavier

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
5

This issue was finally resolved, thanks to DaneLLL’s help.
Here is the method to build Qt5 (and then PySide2 if you need Qt for Python) from source on Jetson devices:

  1. Download Qt source:
    if you need the whole Qt5 (~900MB):

    wget http://master.qt.io/archive/qt/5.15/5.15.2/single/qt-everywhere-src-5.15.2.tar.xz

    or
    qtbase (basic module such as QtCore, QtGui and QtWidget)(~90MB):

    wget http://master.qt.io/archive/qt/5.15/5.15.2/submodules/qtbase-everywhere-src-5.15.2.tar.xz

  2. configure and install Qt5 (here I used qtbase):

    tar -xpf qtbase-everywhere-src-5.15.2.tar.xz
    cd qtbase-everywhere-src-5.15.2/
    ./configure -xcb

    (must enable xcb here manually)
    Choose “o” to install Qt open source version.

    make -j4
    sudo make install

  3. Now we have Qt5 under /usr/local/Qt-5.15.2

  4. Before install PySide2, first we have to deal with some requirements:
    General requirements: Python: 3.5+, Qt: 5.12+, libclang: version10, CMake:3.1+, llvm: version10

    Here I personally suggest use synaptic to manage library:

    sudo apt-get install synaptic

    Then install the correct version of libclang and llvm via synaptic.

  5. Download and build PySide2:

    git clone http://code.qt.io/pyside/pyside-setup.git
    cd pyside-setup/
    git checkout 5.15.2

    I’m not sure whether the version of Qt5 and PySide2 must match. Anyway, here I used PySide2 5.12.2

    Finally, to install PySide2:

    sudo python setup.py install --qmake=/usr/local/Qt-5.15.2/bin/qmake

    (qmake is automatically installed with Qt5)

  6. Try PySide2 in Python:

    python
    from PySide2 import *

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