Warnings

If you compile and link your program in separate steps, then including the -g option in one step and excluding it from the other step will not affect the correctness of the program, but it will affect the ability to debug the program. Any module that is not compiled with -g (or -g0), but is linked with -g (or -g0) will not be prepared properly for debugging. Note that compiling the module that contains the function main with the -g option (or the -g0 option) is usually necessary for debugging.