check_function_exists(name_to_handle_at HAVE_NAME_TO_HANDLE_AT)
check_function_exists(pipe2 HAVE_PIPE2)
check_function_exists(accept4 HAVE_ACCEPT4)
check_function_exists(name_to_handle_at HAVE_NAME_TO_HANDLE_AT)
check_function_exists(pipe2 HAVE_PIPE2)
check_function_exists(accept4 HAVE_ACCEPT4)