[Interest] Qt5.15 from source on centOS 7

[Alexander Carôt]

Follow up: I successfully compiled and installed gcc-7.3.0 on this centOS7 machine and now the configure process works fine by building qmake in /qt5/qtbase/bin/ however, then it bails out with this issue:

error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory

What apart from doing "make install" within gcc-7.3.0 should I do in order to get a working libstdc++.so.6 ? 

Of course I cannot do yum install libstdc++ becasue this would install an outdated lib.

Any further help appreciated,
best

Alex

--
http://www.carot.de
Email : Alexander at Carot.de
Tel.: +49 (0)177 5719797


> Gesendet: Freitag, 17. Juni 2022 um 09:05 Uhr
> Von: "Alexander Carôt" <alexander_carot at gmx.net>
> An: fromqt at tungware.se, "qt qt" <interest at qt-project.org>
> Betreff: Re: [Interest] Qt5.15 from source on centOS 7
>
> > Hi, default GCC version on CentOS 7.9 is 4.8.5 but Qt 5.15 requires at 
> > least GCC version 5.
> 
> Got it – thank you !
> 
> 
> 
> --
> http://www.carot.de
> Email : Alexander at Carot.de
> Tel.: +49 (0)177 5719797
> 
> 
> > Gesendet: Freitag, 17. Juni 2022 um 08:18 Uhr
> > Von: "Henry Skoglund" <henry at tungware.se>
> > An: interest at qt-project.org
> > Betreff: Re: [Interest] Qt5.15 from source on centOS 7
> >
> > On 2022-06-17 07:46, Alexander Carôt wrote:
> > > Hi all,
> > >
> > > I have to compile Qt5.15 from source on an older centOS 7.9 machine but it fails due to this issue (sorry, only german language):
> > >
> > > .In file included from ../include/QtCore/qmetatype.h:1:0,
> > >                   from ../include/QtCore/../../src/corelib/kernel/qvariant.h:46,
> > >                   from ../include/QtCore/qvariant.h:1,
> > >                   from ../include/QtCore/../../src/corelib/text/qlocale.h:43,
> > >                   from ../include/QtCore/qlocale.h:1,
> > >                   from ../include/QtCore/../../src/corelib/serialization/qtextstream.h:46,
> > >                   from ../include/QtCore/qtextstream.h:1,
> > >                   from ../include/QtCore/../../src/corelib/io/qdebug.h:49,
> > >                   from ../include/QtCore/qdebug.h:1,
> > >                   from /var/www/vhosts/soundjack.eu/qt5/qtbase/qmake/library/proitems.h:34,
> > >                   from /var/www/vhosts/soundjack.eu/qt5/qtbase/qmake/library/qmakeparser.h:34,
> > >                   from /var/www/vhosts/soundjack.eu/qt5/qtbase/qmake/library/qmakeevaluator.h:36,
> > >                   from /var/www/vhosts/soundjack.eu/qt5/qtbase/qmake/project.h:32,
> > >                   from /var/www/vhosts/soundjack.eu/qt5/qtbase/qmake/main.cpp:30:
> > > ../include/QtCore/../../src/corelib/kernel/qmetatype.h: In Instanziierung von »QtMetaTypePrivate::QSequentialIterableImpl::QSequentialIterableImpl(const T*) [with T = QList<QVariant>]«:
> > > ../include/QtCore/../../src/corelib/kernel/qvariant.h:772:139:   von hier erfordert
> > > ../include/QtCore/../../src/corelib/kernel/qmetatype.h:1160:135: Fehler: mehrdeutige Klassentemplate-Instanziierung für »struct QtMetaTypePrivate::ContainerCapabilitiesImpl<QList<QVariant>, void>«
> > >         , _iteratorCapabilities(ContainerAPI<T>::IteratorCapabilities | (1 << 4) | (ContainerCapabilitiesImpl<T>::ContainerCapabilities << (4+3)))
> > >                           
> > >
> > > There is an ambigious class template instantiation for struct QtMetaTypePrivate::ContainerCapabilitiesImpl<QList<QVariant> – that obvious but I currently don't know how to resolve it.
> > >
> > > Can anyone help ?
> > >
> > > Thanks !
> > >
> > > Alex
> > >
> > Hi, default GCC version on CentOS 7.9 is 4.8.5 but Qt 5.15 requires at 
> > least GCC version 5.
> > 
> > _______________________________________________
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> > Interest at qt-project.org
> > https://lists.qt-project.org/listinfo/interest
> >
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