qtpositioning not compiling on macOS10.14 x64: "error: property 'courseAccuracy' not found on object of type 'CLLocation *'"

cmake 
-DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ 
-DBUILD_EXAMPLES=OFF -DCMAKE_BUILD_TYPE=Release -DFEATURE_framework=ON 
-DPostgreSQL_ROOT=/Applications/Postgres.app/Contents/Versions/9.6/bin/..
 -DQT_BUILD_TESTS=OFF -GNinja /Users/qt/RTA/src-6.3.0 
-DCMAKE_INSTALL_PREFIX:PATH=/Users/qt/RTA/src-6.3.0/qtbase

[13625/16028] Building OBJCXX object qtpositioning/src/plugins/position/corelocation/CMakeFiles/QGeoPositionInfoSourceFactoryCLPlugin.dir/qgeopositioninfosource_cl.mm.o
FAILED: qtpositioning/src/plugins/position/corelocation/CMakeFiles/QGeoPositionInfoSourceFactoryCLPlugin.dir/qgeopositioninfosource_cl.mm.o 
/Applications/Xcode11.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -DGL_SILENCE_DEPRECATION -DQGeoPositionInfoSourceFactoryCLPlugin_EXPORTS -DQT_CORE_LIB -DQT_DEPRECATED_WARNINGS -DQT_DEPRECATED_WARNINGS_SINCE=0x060000 -DQT_DISABLE_DEPRECATED_BEFORE=0x050000 -DQT_NO_DEBUG -DQT_NO_EXCEPTIONS -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_PLUGIN -DQT_POSITIONING_LIB -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -I/Users/qt/RTA/src-6.3.0/qtpositioning/src/plugins/position/corelocation/QGeoPositionInfoSourceFactoryCLPlugin_autogen/include -I/Users/qt/RTA/src-6.3.0/qtpositioning/src/plugins/position/corelocation -I/Users/qt/RTA/src-6.3.0/qtbase/include -I/Users/qt/RTA/src-6.3.0/qtbase/include/QtCore -I/Users/qt/RTA/src-6.3.0/qtbase/lib/QtCore.framework/Headers -I/Users/qt/RTA/src-6.3.0/qtbase/mkspecs/macx-clang -I/Users/qt/RTA/src-6.3.0/qtbase/src/corelib -I/Users/qt/RTA/src-6.3.0/qtbase/include/QtCore/6.3.0 -I/Users/qt/RTA/src-6.3.0/qtbase/include/QtCore/6.3.0/QtCore -I/Users/qt/RTA/src-6.3.0/qtbase/include/QtPositioning -I/Users/qt/RTA/src-6.3.0/qtbase/lib/QtPositioning.framework/Headers -x objective-c++ -DNDEBUG -O2 -isysroot /Applications/Xcode11.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -mmacosx-version-min=10.14 -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -Wall -Wextra -fno-exceptions -fPIC -fapplication-extension -std=c++17 -MD -MT qtpositioning/src/plugins/position/corelocation/CMakeFiles/QGeoPositionInfoSourceFactoryCLPlugin.dir/qgeopositioninfosource_cl.mm.o -MF qtpositioning/src/plugins/position/corelocation/CMakeFiles/QGeoPositionInfoSourceFactoryCLPlugin.dir/qgeopositioninfosource_cl.mm.o.d -o qtpositioning/src/plugins/position/corelocation/CMakeFiles/QGeoPositionInfoSourceFactoryCLPlugin.dir/qgeopositioninfosource_cl.mm.o -c /Users/qt/RTA/src-6.3.0/qtpositioning/src/plugins/position/corelocation/qgeopositioninfosource_cl.mm
/Users/qt/RTA/src-6.3.0/qtpositioning/src/plugins/position/corelocation/qgeopositioninfosource_cl.mm:92:29: error: property 'courseAccuracy' not found on object of type 'CLLocation *'
            if (newLocation.courseAccuracy >= 0) {
                            ^
/Users/qt/RTA/src-6.3.0/qtpositioning/src/plugins/position/corelocation/qgeopositioninfosource_cl.mm:94:51: error: property 'courseAccuracy' not found on object of type 'CLLocation *'
                                      newLocation.courseAccuracy);
                                                  ^
2 errors generated.