Recipe for wrapping C++ files

Hello How can one bridge between C++ objects and CL? For example, given a class to the lines of

class A { public: A(int q, int w); ~A(); void foo(int q); int bar(); };

that has its instances wrapped in smart pointers, how can that functionality be made available from embedded Common Lisp? Sorry if that's too general of a question. I am somewhat ignorant at the moment, and would appreciate any tips as to where to dig to solve that