cmake __KDE_HAVE_W_OVERLOADED_VIRTUAL examples

rose-compiler/rose cmake/modules/FindKDE4Internal.cmake :1012 

check_cxx_compiler_flag(-Woverloaded-virtual __KDE_HAVE_W_OVERLOADED_VIRTUAL)

rose-compiler/rose cmake/modules/FindKDE4Internal.cmake :1015 

endif(__KDE_HAVE_W_OVERLOADED_VIRTUAL)