monodevelop gdb failed to set controlling terminal

I looked this up on other stackoverflow questions and they said to uncheck the box that says run on external console. And I did that on both Run and Build settings in my Project Options. However it seems like i'm still using the external console and i get the following error: enter image description here

I want to use gdb so i can step debug my program. I'm using ubuntu 14.04.

Another quick question: How do i get the error messages to output line numbers? Right now it only says the following: enter image description here

Solution

This error from gdb just means that gdb itself is not being run with a controlling terminal. I think it is safe to just ignore this.