Problem with qscintilla/Qt5 linking(?)

[Jan Rękorajski]

On Fri, 08 Apr 2022, Jan Palus wrote:

> On 08.04.2022 09:53, Jan Palus wrote:
> > On 08.04.2022 09:01, Jan Rękorajski wrote:
> > > 
> > > Python 3.10.4 (main, Apr  1 2022, 09:00:14) [GCC 11.2.0 20220208 (release)] on linux
> > > Type "help", "copyright", "credits" or "license" for more information.
> > > >>> from PyQt5 import Qsci
> > > Traceback (most recent call last):
> > >   File "<stdin>", line 1, in <module>
> > > ImportError: /usr/lib64/python3.10/site-packages/PyQt5/Qsci.so: undefined symbol: _ZTI11QsciPrinter
> > > 
> > > As far as I can see the symbol is there, recompiling qscintilla2 does
> > > not fix it.
> > > 
> > > Could someone more versed in the linker(?) take a look at it?
> > 
> > Unfortunately it has not much to do with linking, but rather with qmake.
> > 
> > Above symbol is defined in libqscintilla2_qt5.so which is not linked to the
> > module, that's the reason for undefined symbol:
> > 
> > x86_64-pld-linux-g++ -Wl,--as-needed -Wl,--no-copy-dt-needed-entries -Wl,-z,relro -Wl,-z,combreloc -Wl,--version-script=Qsci.exp -Wl,-O1 -shared -o libQsci.so sipQscipart0.o sipQscipart1.o sipQscipart2.o  -L/tmp/B.ldcyigur/BUILD/QScintilla-2.11.6/build-qt5/Qt4Qt5 /usr/lib64/libQt5PrintSupport.so /usr/lib64/libQt5Widgets.so /usr/lib64/libQt5Gui.so /usr/lib64/libQt5Core.so -lGL -lpthread
> > 
> > I guess linking to libqscintilla2_qt5.so should come from:
> > 
> > Python/configure.py:
> > qmake = {'CONFIG': 'qscintilla2'...
> > 
> > but perhaps due to the way we build python module it can't find newly built qscintilla2? No idea.
> > 
> > A brute force workaround is to BR: qscintilla2-qt5-devel so it finds system config.
> 
> Fixed in 2.11.6-2.

Thanks, I wonder how that symbol was defined if our rpm post-checks didn't
catch it's missing.

-- 
Jan Rękorajski                    | PLD/Linux
SysAdm | baggins<at>pld-linux.org | http://www.pld-linux.org/