main.cpp

#include <iostream>

class BlahClass {
public:
  BlahClass() {
    std::cout << "BlahClass()" << std::endl;
  }
  ~BlahClass() {
    std::cout << "~BlahClass()" << std::endl;
  }
};

__attribute__((constructor))
void makeStaticBlah() {
  std::cout << "makeStaticBlah()" << std::endl;
  static BlahClass b;
}

int main(int argc, const char * argv[])
{
  std::cout << "Begin" << std::endl;
  std::cout << "End" << std::endl;
  return 0;
}

output.txt

makeStaticBlah()
BlahClass()
Begin
End
~BlahClass()
Program ended with exit code: 0