configure a Qt5 5.7 application for Android with CMake

As a workaround (from here) you can comment out the line

set_property(TARGET Qt5::Core PROPERTY INTERFACE_COMPILE_FEATURES cxx_decltype)

in lib/cmake/Qt5Core/Qt5CoreConfigExtras.cmake file

For me, the trick was to clean all configuration and temporary build files and force a reconfiguration of the project:

• Close Qt Creator
• Remove manually
  • Qt build folders
  • All .pro.user and .cmake.user files
  • All CMake build folders
• Re-open the project