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直入主题，环境Mac os Mojave 10.14.6 ​

配置环境变量 ​

shell
export GOROOT=$HOME/Development/go
export GOPATH=$HOME/Development/path 
export PATH=$PATH:$HOME/Development/go/bin:/$HOME/Development/path/bin
#建议直接设置为go1.4，后续会创建go1.4目录，由于之前编译一直设置的go，走了很多弯路。
export GOROOT_BOOTSTRAP=$HOME/Development/go1.4

编译 ​

shell
git clone https://github.com/golang/go.git 
cd go/src
./all.bash

报错如下 ​

shell
Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.

根据github提示执行 ​

shell
#从源代码构建Go1.4
git checkout -b 1.4.3 go1.4.3
cd src
./all.bash
#复制~/go到$GOROOT_BOOTSTRAP（~/go1.4默认情况下）`
cp ~/go ~/go1.4 -rf
#从源代码构建Go1.6
cd ~/go
git clean -dfx
git checkout -b 1.6 go1.6
cd src
./all.bash

报错如下 ​

shell
missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

安装 ​

shell
xcode-select --install

再次编译 ​

shell
./all.bash

报错如下 ​

shell
Building Go cmd/dist using /Users/zhangzhichao/Development/go1.4.
Building Go toolchain1 using /Users/zhangzhichao/Development/go1.4.
Building Go bootstrap cmd/go (go_bootstrap) using Go toolchain1.
/Users/zhangzhichao/Development/go/src/runtime/zruntime_defs_darwin_amd64.go:7:7: _Gidle redeclared in this block
	previous declaration at /Users/zhangzhichao/Development/go/src/runtime/runtime2.go:35:11
/Users/zhangzhichao/Development/go/src/runtime/zruntime_defs_darwin_amd64.go:8:7: _Grunnable redeclared in this block
	previous declaration at /Users/zhangzhichao/Development/go/src/runtime/runtime2.go:39:2
/Users/zhangzhichao/Development/go/src/runtime/zruntime_defs_darwin_amd64.go:9:7: _Grunning redeclared in this block
	previous declaration at /Users/zhangzhichao/Development/go/src/runtime/runtime2.go:44:2
/Users/zhangzhichao/Development/go/src/runtime/zruntime_defs_darwin_amd64.go:10:7: _Gsyscall redeclared in this block
	previous declaration at /Users/zhangzhichao/Development/go/src/runtime/runtime2.go:49:2
/Users/zhangzhichao/Development/go/src/runtime/zruntime_defs_darwin_amd64.go:11:7: _Gwaiting redeclared in this block

再次编译 ​

git clean -df

最终编译完成 ​

shell
##### ../misc/cgo/testcshared
SKIP - short mode and $GO_BUILDER_NAME not set

##### ../misc/cgo/testplugin
ok  	misc/cgo/testplugin	0.008s

##### ../misc/cgo/errors
PASS

##### ../test/bench/go1

##### ../test

##### API check
Go version is "go1.13rc1", ignoring -next /Users/zhangzhichao/Development/go/api/next.txt

ALL TESTS PASSED
---
Installed Go for darwin/amd64 in /Users/zhangzhichao/Development/go
Installed commands in /Users/zhangzhichao/Development/go/bin

go新版本会依赖go1.4版本构建，走了好多弯路，之前不停的切换分支修改环境变量，后来突然想通，需要同时拥有两个版本。 ​