Hello, I'm trying to use instrumentation in a big project now. I added an instrumentation.h with instrumentation functions prototype and an instrumentation.cpp with instrumentation functions definition. Now, I wonder why nothing has come up. I compiled with -finstrument-functions and I also include the instrumentation.h in main.cpp (which has the main function) . Should I include instrumentation.h from all cpp files? Any suggestions to make this work? Cheers, -- Paulo Jorge Matos - pocm at soton.ac.uk http://www.personal.soton.ac.uk/pocm PhD Student @ ECS University of Southampton, UK