使用mingw中的gcc, SDL:“对‘SDL_Init’的未定义引用”错误消息是什么意思，我如何解决它?

So I am trying to get a basic sdl program to compile. I have been confronted with multiple different errors which I have resolved from being unable to find the libraries in question. This error however I have no idea how to fix. The bad realoc error in particular concerns me, though I assume it will go away once I figure out how to define the particular functions involved.So I am trying to get a basic sdl program to co