message: don't install main API headers twice
diff: @@ -228,12 +228,14 @@ set(OSPRAY_ISPC_DEVICE_SOURCES
  get_subdirectories(SUBDIRS ${CMAKE_CURRENT_LIST_DIR})
  foreach(dir ${SUBDIRS})
  + if (NOT "${dir}" STREQUAL ospray)
  install(DIRECTORY ${dir}
  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/ospray/SDK
  FILES_MATCHING
  PATTERN *.h
  PATTERN *.ih
  )
  + endif()
  endforeach()
  ##############################################################
  