Compilation fails libqt_plugin.la

[aleung27]

Hi!

I've been trying to compile VLC on Ubuntu 20.04 and I've managed to get ./configure to run with no issue. However, when running 'make' I get the following error message:

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make[4]: Entering directory '/home/<username>/Desktop/vlc/modules' CXXLD libqt_plugin.la collect2: error: ld returned 1 exit status make[4]: *** [Makefile:20410: libqt_plugin.la] Error 1 make[4]: Leaving directory '/home/<username>/Desktop/vlc/modules' make[3]: *** [Makefile:34271: all-recursive] Error 1 make[3]: Leaving directory '/home/<username>/Desktop/vlc/modules' make[2]: *** [Makefile:14327: all] Error 2 make[2]: Leaving directory '/home/<username>/Desktop/vlc/modules' make[1]: *** [Makefile:1584: all-recursive] Error 1 make[1]: Leaving directory '/home/<username>/Desktop/vlc' make: *** [Makefile:1471: all] Error 2

The following packages I have installed that are returned from running

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apt list --installed | grep qt

are:

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libqt5concurrent5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5core5a/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5dbus5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5gui5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5network5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5printsupport5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5qml5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5quick5/focal,now 5.12.8-0ubuntu1 amd64 [installed] libqt5quickcontrols2-5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed] libqt5quickparticles5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5quickshapes5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5quicktemplates2-5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5quicktest5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5quickwidgets5/focal,now 5.12.8-0ubuntu1 amd64 [installed] libqt5sql5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5svg5-dev/focal,now 5.12.8-0ubuntu1 amd64 [installed] libqt5svg5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5test5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5widgets5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] libqt5x11extras5-dev/focal,now 5.12.8-0ubuntu1 amd64 [installed] libqt5x11extras5/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] libqt5xml5/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] qt5-qmake-bin/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] qt5-qmake/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] qt5-qmltooling-plugins/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] qtbase5-dev-tools/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed,automatic] qtbase5-dev/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed] qtbase5-private-dev/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed] qtchooser/focal,now 66-2build1 amd64 [installed,automatic] qtdeclarative5-dev-tools/focal,now 5.12.8-0ubuntu1 amd64 [installed,automatic] qtdeclarative5-dev/focal,now 5.12.8-0ubuntu1 amd64 [installed] qtquickcontrols2-5-dev/focal,now 5.12.8+dfsg-0ubuntu1 amd64 [installed]

I was wondering if anyone could please help me find out what's wrong. Please let me know if you also need any more information!
Many thanks

[Rémi Denis-Courmont]

Check the actual linker error.

[aleung27]

Hi Rémi,

Thanks for getting back to me, running ./compile I got the following error if this helps:

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MAKE : modules MAKE : . COMPILE : libqt_plugin_la-bookmarks.moc.lo ERROR : gui/qt/dialogs/bookmarks/bookmarks.moc.cpp:103: 18: 'QMetaObject::SuperData' has not been declared QMetaObject::SuperData::link<QVLCFrame::staticMetaObject>(), ^~~~~~~~~ ERROR : gui/qt/dialogs/bookmarks/bookmarks.moc.cpp:103: 63: expected primary-expression before ')' token QMetaObject::SuperData::link<QVLCFrame::staticMetaObject>(), ^ cc1plus: warning: unrecognized command line option '-Wno-deprecated-copy' make: *** [Makefile:1471: all] Error 2