1.1选中要build的main.go,然后执行Open in Terminal

1.2在Terminal中执行go env

d:\goprojects\src\day1\exp6>go env

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set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Administrator\AppData\Local\go-build
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=D:\goprojects
set GOPROXY=
set GORACE=
set GOROOT=D:\program Files\go
set GOTMPDIR=
set GOTOOLDIR=D:\program Files\go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build131073830=/tmp/go-build -gno-record-gcc-switches

1.3执行修改goos

d:\goprojects\src\day1\exp6>set GOOS=linux

d:\goprojects\src\day1\exp6>go env

set GOARCH=amd64
set GOBIN=
set GOCACHE=C:\Users\Administrator\AppData\Local\go-build
set GOEXE=
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=linux
set GOPATH=D:\goprojects
set GOPROXY=
set GORACE=
set GOROOT=D:\program Files\go
set GOTMPDIR=
set GOTOOLDIR=D:\program Files\go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set CXX=g++
set CGO_ENABLED=0
set GOMOD=
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config
set GOGCCFLAGS=-fPIC -m64 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build488831346=/tmp/go-build -gno-record-gcc-switches

d:\goprojects\src\day1\exp6>go build

d:\goprojects\src\day1\exp6>

1.4 goos 和gorch取值范围

注意里面两个重要的环境变量GOOS和GOARCH,其中GOOS指的是目标操作系统，它的可用值为：

darwin
freebsd
linux
windows
android
dragonfly
netbsd
openbsd
plan9
solaris

一共支持10中操作系统。

GOARCH指的是目标处理器的架构，目前支持的有：

arm
arm64
386
amd64
ppc64
ppc64le
mips64
mips64le
s390x

一共支持9中处理器的架构，GOOS和GOARCH组合起来，支持生成的可执行程序种类很多

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