Specific meaning of go bootstrap

Like many mainstream languages ,Go Language compilers were originally written by C Language and assembly language .C Language and assembly Go compiler （ Write it down as A） Used to compile Go Source file . So here comes the question ？

Whether it can be used Go The language itself implements a Go compiler B , Using compiler A To compile the Go compiler B The source code of the project is linked to the final Go compiler B Well ？ This is it. Go The core team is Go 1.5 What you do when you release .

They use most of the original C And compiled Go The compiler and runtime implementation are changed to use Go Language writing , And use Go 1.4.x compiler （C And assembly implementation , amount to A ） Compiled Go 1.5 compiler . So from Go 1.5 Version start ,Go The compiler uses Go Language implementation , This is called bootstrapping . That is, use the target programming language to compile （Go Language ） Write its （Go） compiler .