renjunqu <renjunqu@xxxxxxxxx> writes: > I want use gcc's "-finstrument-functions" option to hack a > open-source project. But if i want to make the most use of this option, i > should tell the compiler the my own definition of "__cyg_profile_func_enter" > and "__cyg_profile_func_exit" functions. If the project i want to hack will > create many different 'elf' files,and different 'elf' use different source > files,so i have to define the two function in many many files. > Is there some easy ways to tell the compiler my function's > definition??? I don't understand why you have to define the functions in many files. Why can't you just define them once as globally visible functions? Ian