gprof : How to generate call graph for functions in shared library that is linked to main program

Question

Hi, I am working on Linux environment. I have two 'C' source packages train and test_train.

1. train package when compiled generates libtrain.so
2. test_train links to libtrain.so and generates executable train-test

Now I want to generate a call graph using gprof which shows calling sequence of functions in main program as well as those inside libtrain.so

I am compiling and linking both packages with -pg option and debugging level is o0. After I do ./train-test , gmon.out is generated. Then I do:

$ gprof -q ./train-test gmon.out

Here, output shows call graph of functions in train-test but not in libtrain.so

What could be the problem ?

Answer 1

Do you just want a call graph? Or are you trying to find performance problems? If the latter, consider this link.