Game Engine architecture questions

So I've decided to create a simple game engine for learning purposes & I've decided to use minimum possible third-party libraries(but of course I'll use some of them for topics where I know nothing or very little). I've also decided not to use STL at all and minimum possible help from CRT(e.g. no malloc or free, no default new/delete etc).

But after this said, now I have 2 main questions at this point of time:

1.  How to link(in terms of C++ building process) engine, editor & game itself. Many engines have …