message: UI-CPP: made dependency on dl public.
  VFRendering otherwise does not link properly.
diff: @@ -142,7 +142,7 @@ target_link_libraries( ${PROJECT_NAME} PRIVATE ${SPIRIT_LIBRARIES_STATIC} )
  ### OSX and Unix need libdl
  if( APPLE OR UNIX )
  - target_link_libraries( ${PROJECT_NAME} PRIVATE dl )
  + target_link_libraries( ${PROJECT_NAME} PUBLIC dl )
  endif()
  ####################################################################
  