"A proper C++ ffi for CL with a good clbind" is easy to say but much harder to implement - no one but I have achieved it and I had to implement a Common Lisp to

"A proper C++ ffi for CL with a good clbind" is easy to say but much harder to implement - no one but I have achieved it and I had to implement a Common Lisp to achieve it. It's not just calling functions and translating arguments and return values that is difficult. The much harder problem is unwinding the stack over C++ frames that use RAII.