message: added dlload error msg
diff: @@ -421,7 +421,7 @@ int main(int argc, char* argv[])
  void* libhandle = dlopen((libs[idx]).c_str(), RTLD_LAZY);
  if(libhandle == NULL)
  {
  - std::cout << "Failed to open " << libs[idx] << std::endl;
  + std::cout << "Failed to open " << libs[idx] << ", error: " << dlerror() << std::endl;
  exit(1);
  }
  struct link_map* link = nullptr;
  