Hi, I want to generate a callgraph of nginx(1.0.2), whose code uses a feature which is in gcc 4.1 + version (atomic operation).

I have tried codeviz(1.0.11), which only applies in gcc 3.4.6, so when I compiles the nginx, it says: __sync_bool_compare_and_swap can't be found.

Could you please help me with this, how to generate a callgraph in nginx who uses a gcc4.1+ feature?