compile qtwebkit, 'undefined reference to 'QMetaObjectBuilder::setClassName'

[zeroDawn]

bugs appeared when compile qtwebkit , just like 'undefined reference to 'QMetaObjectBuilder::setClassName' ...

any idea?
thanks advance.

TestWebCore.dir/Tests/WebCore/TextCodec.cpp.o  -o bin/TestWebKitAPI/WebCore/TestWebCore  -Wl,-rpath,/root/Downloads/qtwebkit-5.212.0-alpha4/build/lib  lib/libWebCore.a  lib/libgtest.so  /usr/lib64/libQt5Gui.so.5.11.1  lib/libJavaScriptCore.a  lib/libwoff2.a  lib/libbrotli.a  /usr/lib64/libQt5Network.so.5.11.1  /usr/lib/libQt5Sensors.so.5.11.1  -ljpeg  -lpng  -lz  -lwebp  -lhyphen  -lxml2  -lxslt  -lsqlite3  -lX11  -lgio-2.0  -lgstapp-1.0  -lgstbase-1.0  -lgstreamer-1.0  -lgstpbutils-1.0  -lgstaudio-1.0  -lgsttag-1.0  -lgstvideo-1.0  -lgstfft-1.0  -ljpeg  -lpng  -lz  -lwebp  -lhyphen  -lxml2  -lxslt  -lsqlite3  -lX11  -lgio-2.0  -lgstapp-1.0  -lgstbase-1.0  -lgstreamer-1.0  -lgstpbutils-1.0  -lgstaudio-1.0  -lgsttag-1.0  -lgstvideo-1.0  -lgstfft-1.0  lib/libANGLESupport.a  lib/libWTF.a  /usr/lib64/libQt5Core.so.5.11.1  -ldl  -licuuc  -lgobject-2.0  -lglib-2.0  -licui18n  -lpthread && :
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaObjectBuilder::setClassName(QByteArray const&)', version 'Qt_5_PRIVATE_API'
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaMethodBuilder::signature() const', version 'Qt_5_PRIVATE_API'
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaObjectBuilder::setSuperClass(QMetaObject const*)', version 'Qt_5_PRIVATE_API'
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaObjectBuilder::QMetaObjectBuilder()', version 'Qt_5_PRIVATE_API'
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaObjectBuilder::toMetaObject() const', version 'Qt_5_PRIVATE_API'
/usr/lib/libQt5Sensors.so.5.11.1: error: undefined reference to 'QMetaObjectBuilder::~QMetaObjectBuilder()', version 'Qt_5_PRIVATE_API'

[JonB]

@zeroDawn
QtWebKit was deprecated a long time ago. You are probably trying to build it against a version of Qt which is too recent?

[zeroDawn]

@JonB
thanks.
i have to compile qtwebkit ,because i have an old project.
i have been troubled by this problem for several days.

[JonB]

@zeroDawn
I think start by answering:

• What platform are you on?
• What exact version of QtWebKit did you get sources for, and from where?
• What version of Qt are you using?
• Did you compile that version of Qt or did you get it ready-built from Linux distro?
• What compiler version are you using?

[zeroDawn]

@JonB
platform : linux aarch64
version of QtWebKit:5.212.0-alpha4 from github(qt)
version of qt:5.11.1,my linuxOS has qt-5.11.1,and i was also compiled qt-5.11.1 with g++ 7.3.0

[JonB]

@zeroDawn
That may actually be an OK combination then. You might Google for qt 5.11 qtwebkit.

Your errors actually seem to come from the /usr/lib/libQt5Sensors.so.5.11.1 when linking, rather than from the QtWebKit stuff?

The other Qt libraries being linked with are in /usr/lib64/ but libQt5Sensors.so.5.11.1 is in /usr/lib, I don't know whether that indicates a 32-/64-bit or other non-compatible mismatch?

Do you know when it last compiled/linked successfully on such a system?

I think I'll leave it at that, others may know better than I. I think it is possible your actual issue is with libQt5Sensors rather than the QtWebKit stuff.