Hi Nuno,
When you compile the project you need to select the debug checkbox in order to have debug info like the line number. As counter effect your program will run slower.
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges