QtWebEngine fails compiling on CentOS 7

[may24x]

Hi all,

I'm tryting to build the build the opensource Qt5.5.0 but the last step fails:

-L/usr/local/lib -L/work/qt-everywhere-opensource-src-5.5.0/qtbase/lib -L/work/qt-everywhere-opensource-src-5.5.0/qtdeclarative/lib -lQt5Gui -lQt5Qml -lQt5Network -lQt5Core -linput -levdev -lpthread -lGL 
Release/obj/src/core/QtWebEngineCore.content_browser_client_qt.o:content_browser_client_qt.cpp:function QtWebEngineCore::ShareGroupQtQuick::AboutToAddFirstContext(): error: undefined reference to 'QString::toLower_helper(QString const&)'
Release/obj/src/core/QtWebEngineCore.delegated_frame_node.o:delegated_frame_node.cpp:function QtWebEngineCore::DelegatedFrameNode::commit(QtWebEngineCore::ChromiumCompositorData*, std::vector<cc::ReturnedResource, std::allocator<cc::ReturnedResource> >*, QtWebEngineCore::RenderWidgetHostViewQtDelegate*): error: undefined reference to 'QSGSimpleTextureNode::setSourceRect(QRectF const&)'
collect2: Fehler: ld gab 1 als Ende-Status zurück
make[4]: *** [../../lib/libQt5WebEngineCore.so.5.5.0] Fehler 1
make[4]: Leaving directory `/work/qt-everywhere-opensource-src-5.5.0/qtwebengine/src/core'
make[3]: *** [sub-core_module-pro-make_first] Fehler 2
make[3]: Leaving directory `/work/qt-everywhere-opensource-src-5.5.0/qtwebengine/src/core'
make[2]: *** [sub-core-make_first] Fehler 2
make[2]: Leaving directory `/work/qt-everywhere-opensource-src-5.5.0/qtwebengine/src'
make[1]: *** [sub-src-make_first] Fehler 2
make[1]: Leaving directory `/work/qt-everywhere-opensource-src-5.5.0/qtwebengine'
make: *** [module-qtwebengine-make_first] Fehler 2

Any ideas ?