[qt6] duplicate symbols in mac style plugin

[4/4 2.3/sec] Linking CXX executable abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt
ld: warning: duplicate symbol '_OBJC_CLASS_$_QDarkNSBox_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_METACLASS_$_QDarkNSBox_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_CLASS_$_QVerticalSplitView_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_METACLASS_$_QVerticalSplitView_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_CLASS_$_QIndeterminateProgressIndicator_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_METACLASS_$_QIndeterminateProgressIndicator_NI_6_x_dev' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)
ld: warning: duplicate symbol '_OBJC_IVAR_$_QIndeterminateProgressIndicator_NI_6_x_dev._animators' in:
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./qml/QtQuick/NativeStyle/libqtquickcontrols2nativestyleplugin.a(qquickmacstyle_mac.mm.o)
    /Users/tim/dev/qt3rd/Qt-6.x-dev-macx-clang-static/./plugins/styles/libqmacstyle.a(qmacstyle_mac.mm.o)

objc[41301]: Class QIndeterminateProgressIndicator_NI_6_x_dev is implemented in both /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0decf8) and /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0decf8). One of the two will be used. Which one is undefined.
objc[41301]: Class QVerticalSplitView_NI_6_x_dev is implemented in both /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0ded70) and /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0ded70). One of the two will be used. Which one is undefined.
objc[41301]: Class QDarkNSBox_NI_6_x_dev is implemented in both /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0ded98) and /Users/tim/build/nilibs-xc11-Debug22/abFramework/Demo/ABDemoQt.app/Contents/MacOS/ABDemoQt (0x10b0ded98). One of the two will be used. Which one is undefined.