option (USE_INTERNAL_POCO_LIBRARY "Use internal Poco library" ${NOT_UNBUNDLED}) if (USE_INTERNAL_POCO_LIBRARY) set (LIBRARY_DIR ${ClickHouse_SOURCE_DIR}/contrib/poco) else () find_path (ROOT_DIR NAMES Foundation/include/Poco/Poco.h include/Poco/Poco.h) endif () add_subdirectory (Crypto) add_subdirectory (Data) add_subdirectory (Data/ODBC) add_subdirectory (Foundation) add_subdirectory (JSON) add_subdirectory (MongoDB) add_subdirectory (Net) add_subdirectory (Net/SSL) add_subdirectory (Redis) add_subdirectory (Util) add_subdirectory (XML)