Duplicate symbols qt_mac_genericColorSpace when building qpa example statically

1) Build qt as "static":
./configure -prefix "/path/where/qt/will/be/installed" -static -debug -commercial -confirm-license -no-javascript-jit -no-qml-debug -no-nis -no-cups -qpa cocoa -nomake examples -nomake tools -nomake tests -no-eglfs -no-kms -no-sql-psql -no-sql-odbc

2) Open Xcode. In Xcode go to "Preferences -> Locations -> Source Trees"
3) Add setting "AIRQT5DIR" and set path to the folder where Qt was installed.
Example: AIRQT5DIR => /Volumes/Data/Qt/builds/qt500rc1

4) Open "qpa_demo" project from attachment and build target "qpa_demo_static".
As result error:

ld: duplicate symbol qt_mac_genericColorSpace() in /../build_qt5/lib/libQt5Widgets_debug.a(qmacstyle_mac.o) and /../build_qt5/plugins/platforms/libqcocoa_debug.a(qcocoahelpers.o) for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

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• Optional steps:

5) Build qt as "shared":
./configure -prefix "/path/where/qt/will/be/installed" -shared -debug -commercial -confirm-license -no-javascript-jit -no-qml-debug -no-nis -no-cups -qpa cocoa -nomake examples -nomake tools -nomake tests -no-eglfs -no-kms -no-sql-psql -no-sql-odbc -no-framework

6) Close and Open Xcode.
7) Open "qpa_demo" project from attachment and build target "qpa_demo_dynamic".
As result: qpa_demo_dynamic just working fine.