option(ENABLE_GSASL_LIBRARY "Enable gsasl library" ${ENABLE_LIBRARIES})

if (NOT ENABLE_GSASL_LIBRARY)
    if(USE_INTERNAL_LIBGSASL_LIBRARY)
        message (${RECONFIGURE_MESSAGE_LEVEL} "Cannot use internal libgsasl library with ENABLE_GSASL_LIBRARY=OFF")
    endif()
    return()
endif()

option (USE_INTERNAL_LIBGSASL_LIBRARY "Set to FALSE to use system libgsasl library instead of bundled" ON)

if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/libgsasl/src/gsasl.h")
    if (USE_INTERNAL_LIBGSASL_LIBRARY)
        message (WARNING "submodule contrib/libgsasl is missing. to fix try run: \n git submodule update --init")
        message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find internal libgsasl")
        set (USE_INTERNAL_LIBGSASL_LIBRARY 0)
    endif ()
    set (MISSING_INTERNAL_LIBGSASL_LIBRARY 1)
endif ()

if (NOT USE_INTERNAL_LIBGSASL_LIBRARY)
    find_library (LIBGSASL_LIBRARY gsasl)
    find_path (LIBGSASL_INCLUDE_DIR  NAMES gsasl.h PATHS ${LIBGSASL_INCLUDE_PATHS})
    if (NOT LIBGSASL_LIBRARY OR NOT LIBGSASL_INCLUDE_DIR)
        message (${RECONFIGURE_MESSAGE_LEVEL} "Can't find system libgsasl")
    endif ()
endif ()

if (LIBGSASL_LIBRARY AND LIBGSASL_INCLUDE_DIR)
elseif (NOT MISSING_INTERNAL_LIBGSASL_LIBRARY)
    set (LIBGSASL_INCLUDE_DIR "${ClickHouse_SOURCE_DIR}/contrib/libgsasl/src" "${ClickHouse_SOURCE_DIR}/contrib/libgsasl/linux_x86_64/include")
    set (USE_INTERNAL_LIBGSASL_LIBRARY 1)
    set (LIBGSASL_LIBRARY gsasl)
endif ()

if(LIBGSASL_LIBRARY AND LIBGSASL_INCLUDE_DIR)
    set (USE_LIBGSASL 1)
endif()

message (STATUS "Using libgsasl=${USE_LIBGSASL}: ${LIBGSASL_INCLUDE_DIR} : ${LIBGSASL_LIBRARY}")