qtscxml build failed

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g++ -c -pipe -g -Og -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -Wvla -Wdate-time -Werror -Wno-error=cpp -Wno-error=deprecated-declarations -Wno-error=strict-overflow -D_REENTRANT -fPIC -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_BUILD_SCXML_LIB -DQT_BUILDING_QT -DQT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_NAMESPACE=TestNamespace -I/home/qt/work/qt/qtscxml/src/scxml -I. -I../../include -I../../include/QtScxml -I../../include/QtScxml/5.9.1 -I../../include/QtScxml/5.9.1/QtScxml -I/home/qt/work/install/include/QtQml/5.9.1 -I/home/qt/work/install/include/QtQml/5.9.1/QtQml -I/home/qt/work/install/include/QtCore/5.9.1 -I/home/qt/work/install/include/QtCore/5.9.1/QtCore -I/home/qt/work/install/include -I/home/qt/work/install/include/QtQml -I/home/qt/work/install/include/QtNetwork -I/home/qt/work/install/include/QtCore -I.moc -I/home/qt/work/install/mkspecs/linux-g++ -o .obj/qscxmlecmascriptplatformproperties.o /home/qt/work/qt/qtscxml/src/scxml/qscxmlecmascriptplatformproperties.cpp
/home/qt/work/qt/qtscxml/src/scxml/qscxmlecmascriptdatamodel.cpp: In static member function ‘static void TestNamespace::QScxmlEcmaScriptDataModelPrivate::setReadonlyProperty(TestNamespace::QJSValue*, const TestNamespace::QString&, const TestNamespace::QJSValue&)’:
/home/qt/work/qt/qtscxml/src/scxml/qscxmlecmascriptdatamodel.cpp:292:39: error: no matching function for call to ‘TestNamespace::QV4::String::makeIdentifier(TestNamespace::QV4::ExecutionEngine*&)’
         s->makeIdentifier(scope.engine);
                                       ^
In file included from /home/qt/work/install/include/QtQml/5.9.1/QtQml/private/qjsvalue_p.h:57:0,
                 from /home/qt/work/qt/qtscxml/src/scxml/qscxmlecmascriptdatamodel.cpp:49:
/home/qt/work/install/include/QtQml/5.9.1/QtQml/private/qv4string_p.h:178:10: note: candidate: void TestNamespace::QV4::String::makeIdentifier() const
     void makeIdentifier() const {
          ^
/home/qt/work/install/include/QtQml/5.9.1/QtQml/private/qv4string_p.h:178:10: note:   candidate expects 0 arguments, 1 provided
Makefile:2662: recipe for target '.obj/qscxmlecmascriptdatamodel.o' failed
make[2]: *** [.obj/qscxmlecmascriptdatamodel.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/qt/work/build/src/scxml'
Makefile:45: recipe for target 'sub-scxml-make_first' failed
make[1]: *** [sub-scxml-make_first] Error 2
make[1]: Leaving directory '/home/qt/work/build/src'
Makefile:47: recipe for target 'sub-src-make_first' failed
make: *** [sub-src-make_first] Error 2
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