Self-hosting (compilers)

Self-hosting is when you create your own version of something instead of relying on someone else's version. A compiler is a tool that takes code written in one language and transforms it into something that a computer can understand and run. When you self-host a compiler, you use a compiler to compile the code for that same compiler. This means that you create your own version of the compiler using the same compiler that you created it with. This way, you don't have to depend on anyone else's version of the compiler and you can customize the compiler however you'd like.