一个语言的编译器如何用这种语言编写？

问题描述

如何以与语言相同的语言编写一个编译器编写该编译器？

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这可能会被删除，但是...：

如何引导：

为什么引导：

解决方案

通常第一个版本的编译器是用不同的语言编写的，然后每个后续版本都用该语言编写，并用旧版本编译。一旦你使用版本 x-1 编译版本 x ，就可以使用新构建的版本 x 重新编译自身，利用版本引入的任何新的优化; GCC以这种方式发布

How can you write a compiler in the same language as the language you're writing that compiler for? Isn't that sort of recursive?

Edit:This may be deleted, but otherwise... :

How to bootstrap:

• Writing a compiler in its own language
• Bootstrapping a language

Why to bootstrap:

• Bootstrapping a compiler: why?

解决方案

Generally the first version of the compiler is written in a different language, and then each subsequent version is written in that language and compiled with the older version. Once you've compiled version x with version x-1, you can use the newly built version x to recompile itself, taking advantage of any new optimizations that version introduces; GCC does its releases that way

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