message: usage of additional plugins
diff: +foreach(ADDITIONAL_PLUGIN_SOURCE_DIR ${EOSIO_ADDITIONAL_PLUGINS})
  + message(STATUS "Additional plugin source dir: ${ADDITIONAL_PLUGIN_SOURCE_DIR}")
  + add_subdirectory(${ADDITIONAL_PLUGIN_SOURCE_DIR} ${CMAKE_BINARY_DIR}/additional_plugins/${ADDITIONAL_PLUGIN_SOURCE_DIR})
  +endforeach()
  +
  add_executable( nodeos main.cpp )
  if( UNIX AND NOT APPLE )
  set(rt_library rt )
  @@ -60,6 +65,11 @@ target_link_libraries( nodeos
  PRIVATE chain_plugin http_plugin producer_plugin http_client_plugin
  PRIVATE eosio_chain fc ${CMAKE_DL_LIBS} ${PLATFORM_SPECIFIC_LIBS} )
  +foreach(ADDITIONAL_PLUGIN_TARGET ${ADDITIONAL_PLUGINS_TARGET})
  + message(STATUS "Additional plugin target: ${ADDITIONAL_PLUGIN_TARGET}")
  + target_link_libraries( nodeos PRIVATE -Wl,${whole_archive_flag} ${ADDITIONAL_PLUGIN_TARGET} -Wl,${no_whole_archive_flag} )
  +endforeach()
  +
  if(BUILD_MONGO_DB_PLUGIN)
  target_link_libraries( nodeos PRIVATE -Wl,${whole_archive_flag} mongo_db_plugin -Wl,${no_whole_archive_flag} )
  endif()
  