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.