I would like to use the annotated source output of gprof (activity of code by line number).

I am compiling the code using gcc 3.4.2 as:

gcc -pg program_name -o program

When program is run, I get the gmon.out file just fine. I then run gprof as

gprof program > LOG

The flat listing ouptut works fine.

The gprof man page says that I can get the annotated source output by running it as:

gprof -A program

gprof accepts this option (no errors or warnings) but produces no ouput. Am I doing something wrong or is this an unimplemented option?

I would also like to use profile outputs as an input for recompliling. The gcc man page lists some options such as -fprofile-arcs for this purpse. Can someone give me a sketch on how to use the profiling into for this purpose?

- Ian