- Also, I have a question about debugggers. I think that the GDB debugger from GNU project is used on VS by default. But when I installed the 2 intel toolkits, is VS IDE using IDB debugger know ? Also when I compile on the command prompt, what is the command to use GDB or an other debugger for example here : ifort hfaxial7.f vector.f gmatrix.f pn.f newlan.f laso.f -o hfaxial7.exe (before the command line, I set up the intel environment)