How to make android native shared library(.so) to be unable to debug by attaching

How to make android native shared library(.so) to be unable to debug by
attaching

I am making the native shared library to be running on android. Before, I
experienced that protecting the shared library from debug(i.e set break
point and trace) by attaching by IDA, at that time, SIGSTOP signal
occurred and process was terminated. So I wanna to make my library such
that. I will be appreciate to tell me how to. Also, if you know another
method to protect the native shared library to be running on android
device from debug, disassemble or reverse-engineering. Thanks in advance.