Install with Qt 5.12.1: Cannot convert QJsonArray::iterator about qtbase HOT 6 OPEN

https://download.qt.io/archive/qt/5.12/5.12.1/submodules/qtbase-everywhere-src-5.12.1.tar.xz

export QTDIR="/path/to/new/qt/"
export PATH="${QTDIR}/bin:${PATH}"
export LD_LIBRARY_PATH="${QTDIR}/lib"
export CMAKE_PREFIX_PATH="${QTDIR}"
export PKG_CONFIG_PATH="${QTDIR}/lib/pkgconfig"
R
install_github("ggobi/qtbase")

Generating SMOKE sources...
preparing SMOKE data [qt]
writing out smokedata.cpp [qt]
writing out x_*.cpp [qt]
Done.
[ 45%] Automatic MOC for target smokeqt
[ 45%] Built target smokeqt_autogen
Scanning dependencies of target smokeqt
[ 46%] Building CXX object kdebindings/smoke/qt/CMakeFiles/smokeqt.dir/smokedata.cpp.o
/private/var/folders/w0/tsvfs60x117d_vcxs0jhhsv00000gn/T/Rtmp9hb2Rs/R.INSTALL130de2433b2eb/qtbase/src-build/kdebindings/smoke/qt/smokedata.cpp:10362:35: error: 
      use of undeclared identifier 'RegisterType'; did you mean 'QMetaType::registerType'?
        case 1390: return (void*)(RegisterType*)xptr;
                                  ^~~~~~~~~~~~
                                  QMetaType::registerType
/usr/local/opt/qt/lib/QtCore.framework/Headers/qmetatype.h:511:16: note: 'QMetaType::registerType' declared here
    static int registerType(const char *typeName, Deleter deleter,
               ^
/private/var/folders/w0/tsvfs60x117d_vcxs0jhhsv00000gn/T/Rtmp9hb2Rs/R.INSTALL130de2433b2eb/qtbase/src-build/kdebindings/smoke/qt/smokedata.cpp:10362:48: error: 
      expected expression
        case 1390: return (void*)(RegisterType*)xptr;
                                               ^