Building PyQt5 5.15.3 with SIP v4 fails.

[Ben Greiner]

On 26.02.21 10:20, Phil Thompson wrote:
> On 25/02/2021 21:53, Ben Greiner wrote:
>> Hi,
>>
>> I don't know how much this is still supported. After all the sources
>> still provide a configure.py. However with the update to 5.15.3,
>> calling python configure.py results in the following fail:
>>
>> [   30s] + python3 ../configure.py --verbose --sip=/usr/bin/sip-3.6
>> --qmake=/usr/bin/qmake-qt5 --confirm-license --assume-shared --disable
>> QtQuick3D --disable QtRemoteObjects --qsci-api --qsci-api-destdir
>> /usr/share/qt5/qsci 'QMAKE_CFLAGS+=-fmessage-length=0
>> -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2
>> -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables
>> -fstack-clash-protection -g ' 'QMAKE_CXXFLAGS+=-fmessage-length=0
>> -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2
>> -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables
>> -fstack-clash-protection -g '
>>
>> ...
>>
>> [   58s] Checking to see if the dbus support module should be built...
>> [   58s] pkg-config --cflags-only-I --libs dbus-1
>> [   58s] Qt v5.15.2 is being used.
>> [   58s] The qmake executable is /usr/bin/qmake-qt5.
>> [   58s] Qt is built as a shared library.
>> [   58s] SIP 4.19.24 is being used.
>> [   58s] The sip executable is /usr/bin/sip-3.6.
>> [   58s] These PyQt5 modules will be built: QtCore, QtGui, QtHelp, 
>> QtMultimedia,
>> [   58s] QtMultimediaWidgets, QtNetwork, QtOpenGL, QtPrintSupport,
>> QtQml, QtQuick,
>> [   58s] QtSql, QtSvg, QtTest, QtWebKit, QtWebKitWidgets, QtWidgets, 
>> QtXml,
>> [   58s] QtXmlPatterns, QtDesigner, QtDBus, _QOpenGLFunctions_2_0,
>> [   58s] _QOpenGLFunctions_2_1, _QOpenGLFunctions_4_1_Core, QtSensors,
>> QtSerialPort,
>> [   58s] QtX11Extras, QtBluetooth, QtPositioning, QtQuickWidgets, 
>> QtWebSockets,
>> [   58s] QtWebChannel, QtLocation, QtNfc, QtTextToSpeech.
>> [   58s] The PyQt5 Python package will be installed in
>> [   58s] /usr/lib64/python3.6/site-packages.
>> [   58s] PyQt5 is being built with generated docstrings.
>> [   58s] PyQt5 is being built with 'protected' redefined as 'public'.
>> [   58s] The Designer plugin will be installed in
>> /usr/lib64/qt5/plugins/designer.
>> [   58s] The qmlscene plugin will be installed in 
>> /usr/lib64/qt5/plugins/PyQt5.
>> [   58s] The QScintilla API file will be installed in
>> /usr/share/qt5/qsci/api/python.
>> [   58s] The PyQt5 PEP 484 stub files will be installed in
>> [   58s] /usr/lib64/python3.6/site-packages/PyQt5.
>> [   58s] The dbus support module will be installed in
>> [   58s] /usr/lib/python3.6/site-packages/dbus/mainloop.
>> [   58s] The PyQt5 .sip files will be installed in /usr/share/sip/PyQt5.
>> [   58s] pyuic5, pyrcc5 and pylupdate5 will be installed in /usr/bin.
>> [   58s] The interpreter used by pyuic5 is /usr/bin/python3.
>> [   58s] Generating the C++ source for the QtCore module...
>> [   58s] /usr/bin/sip-3.6 -w -n PyQt5.sip -t WS_X11 -t Qt_5_15_0 -f -P
>> -o -a QtCore.api -y QtCore.pyi -c
>> /home/abuild/rpmbuild/BUILD/PyQt5-5.15.3/build/QtCore -I sip -I
>> /home/abuild/rpmbuild/BUILD/PyQt5-5.15.3/sip
>> /home/abuild/rpmbuild/BUILD/PyQt5-5.15.3/sip/QtCore/QtCoremod.sip
>> [   58s] sip: Py_ssize_t is undefined
>>
>>
>> It used to work with 5.15.2. Adding -I /usr/include/python3.6m to the
>> sip call does not help. Am I missing something?
>>
>> (This is an rpmbuild for  openSUSE Leap 15.2. Building with SIP v6 and
>> sip-build works fine.)
>
> SIP v4 is unsupported but that was an unintentional change. I can fix 
> PyQt5 but it will be some time before the next release. Or I can fix 
> SIP v4 (it's the addition of one line) and make a release much sooner.
>
> Phil


Whatever works for you. I could even apply a patch to an existing 
release of PyQt5 or SIP v4. But in the meantime, I got approval to 
remove the SIPv4 build of PyQt5 for the openSUSE devel projects. This 
means removing the Python 2 packages of PyQt5 and all depending software 
as well. (It does not mean that it vanishes from the "stable" distros 
SLE and openSUSE Leap).

Thanks,
Ben