go 环境搭建

1,下载

Golang官网下载地址：https://golang.google.cn/dl/

2,解压到指定目录

3,运行go 

获取环境变量修改方法

go help env
usage: go env [-json] [-u] [-w] [var ...]

Env prints Go environment information.

By default env prints information as a shell script
(on Windows, a batch file). If one or more variable
names is given as arguments, env prints the value of
each named variable on its own line.

The -json flag prints the environment in JSON format
instead of as a shell script.

The -u flag requires one or more arguments and unsets
the default setting for the named environment variables,
if one has been set with 'go env -w'.

The -w flag requires one or more arguments of the
form NAME=VALUE and changes the default settings
of the named environment variables to the given values.

For more about environment variables, see 'go help environment'.

windows现在环境变量

C:UsersAdministrator>go env
set GO111MODULE=on
set GOARCH=amd64
set GOBIN=
set GOCACHE=C:UsersAdministratorAppDataLocalgo-build
set GOENV=C:UsersAdministratorAppDataRoaminggoenv
set GOEXE=.exe
set GOFLAGS=
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOINSECURE=
set GONOPROXY=
set GONOSUMDB=
set GOOS=windows
set GOPATH=C:Go
etworkpkg;
set GOPRIVATE=
set GOPROXY=https://goproxy.io,direct
set GOROOT=c:go
set GOSUMDB=sum.golang.org
set GOTMPDIR=
set GOTOOLDIR=c:gopkg	oolwindows_amd64
set GCCGO=gccgo
set AR=ar
set CC=gcc
set CXX=g++
set CGO_ENABLED=1
set GOMOD=NUL
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 -fmessage-length=0 -fdebug-prefix-map=C:UsersADMINI~1AppDataLocalTempgo-build644129466=/tmp/go-build -gno-record-gcc-switches

C:UsersAdministrator>

linux 现在环境变量

root@ubuntu:~# go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/root/go"
GOPRIVATE=""
GOPROXY="https://goproxy.cn/"
GOROOT="/home/goenv/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/home/goenv/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build869956040=/tmp/go-build -gno-record-gcc-switches"
root@ubuntu:~# 

　设置/etc/profile环境变量

设置GOPATH环境变量

修改/etc/profile系统环境变量文件，写入GOPATH信息以及go sdk路径
#for go env

export GOROOT=/home/goenv/go
export PATH=$PATH:$GOROOT/bin

读取/etc/profile，立即生效

source /etc/profile     #读取环境变量

　　

　修改方法

go env -w GOPROXY=https://goproxy.cn/
go env -w GO111MODULE=on

　　

想在linux 同时设置 x64,x86的环境失败了.

GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"

GOROOT="/home/goenv/go"
会同时修改.只有用2台机器来配置环境变量

安装mingw ,gcc

安装mingw，想用g++gcc编译器。

网上很多教程都是指引下载安装器的，但是下载后在线安装时却都出现下载的错误，所以无法安装成功。

参考mingw贴吧：https://tieba.baidu.com/p/5487544851?red_tag=1967781305

可以到页面：https://sourceforge.net/projects/mingw-w64/files/?source=navbar 下载离线安装包