This article introduces how to use visual studio code to build golang development environment and debug environment on Mac platform.

1. brew install golang

# install
brew install golang
# Check whether the installation is successful
$ go version
go version go1.12.7 darwin/amd64
$ brew info go
go: stable 1.13.3 (bottled), HEAD
Open source programming language to build simple/reliable/efficient software
https://golang.org
/usr/local/Cellar/go/1.12.7 (9,816 files, 452.7MB) *
  Poured from bottle on 2019-07-16 at 22:22:49
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/go.rb
==> Requirements
Required: macOS >= 10.10 ✔
==> Options
--HEAD
    Install HEAD version

2. Configure the Golang environment variable

GOROOT: Installation directory
GOPATH: Workspace directory (The directory cannot be associated with Go There are three subdirectories under this directory: src,bin,pkg)
Mac The environment variable of environment is set atvim ~/.bash_profile，Add at the end of the file

export GOROOT="/usr/local/Cellar/go/1.12.7/libexec"
export GOPATH="${HOME}/Documents/go"
export PATH="${PATH}:${GOPATH}:${GOPATH}/bin"

After setting, execute source ~ /. Bash? Profile to take effect.
Check go env to see if the environment variable is set successfully

$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/xxxx/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/xxxx/Documents/work/go_work"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.12.7/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.12.7/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
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 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/4t/rrdtjpp9487_6gf8mclrslpm0000gn/T/go-build714070253=/tmp/go-build -gno-record-gcc-switches -fno-common"

3. Install vscode

• Download and install on the official website: vscode official website
• brew cask installation:

# Installation:
brew cask install visual-studio-code
# To view vscode information:
-> % brew cask info visual-studio-code
visual-studio-code: 1.3.1,e6b4afa53e9c0f54edef1673de9001e9f0f547ae
Microsoft Visual Studio Code, VS Code
https://code.visualstudio.com/
Not installed
https://github.com/caskroom/homebrew-cask/blob/master/Casks/visual-studio-code.rb
==> Contents
  Visual Studio Code.app (app)
  /Applications/Visual Studio Code.app/Contents/Resources/app/bin/code (binary)

• vscode plug in installation
  go: development
  Vscode icons: color value, color file, directory
  Material Theme Kit: Editor UI theme
  visual studio code settings sync: synchronizing vscode profiles
  30 VSCode plug-ins that greatly improve development efficiency

• Custom vscode

  {
   "files.autoSave": "afterDelay",
   "editor.fontSize": 14,    // Controls the font size in pixels.
   "terminal.external.osxExec": "iterm.app", // Customize terminal applications to run on OS X
   "go.gopath": "/Users/xxxx/", // Personal GOPATH personal development workspace
   "go.goroot": "/usr/local/Cellar/go/1.7.3/libexec", //GO installation directory
   "workbench.statusBar.visible": false
  }

4. Use vscode to automatically install the necessary plug-ins for debug ging

Solutions that may not be available for download (no internet access) due to network reasons:

1. Enter cd $GOPATH/src/github.com/golang, if not, please create

2. Download tools tools:

   git clone https://github.com/golang/tools.git tools

3. Copy tools to $GOPATH/src/golang.org/x/tools

   cp -r $GOPATH/src/github.com/golang/tools $GOPATH/src/golang.org/x/

4. Install the golang debug plug-in, delve
   Use brew install go delve / delve / delve or install manually
   But in practice, there will be errors. We can't find the installation package. I don't know how to solve it. We need to install it manually instead.

   Updating Homebrew...
   Error: No available formula with the name "go-delve/delve/delve"
   ==> Searching for a previously deleted formula (in the last month)...
   Warning: go-delve/delve is shallow clone. To get complete history run:
    git -C "$(brew --repo go-delve/delve)" fetch --unshallow
   
   Error: No previously deleted formula found.
   ==> Searching for similarly named formulae...
   Error: No similarly named formulae found.

   Using Xcode command line tools to install

   xcode-select --install

   Create certificate

   • Open key chain access;
   • In the menu bar, select key chain access - Certificate assistant - create certificate to start creating self signed certificate;
   • The certificate name is set to dlv; the identity type is self signed root certificate; the certificate type is code signed, and finally, tick the place where I want to overwrite these default values and choose continue;
   • The validity period should be longer.
   • Then go all the way back until the location specified for the certificate appears, select the keychain system, and then select Create;

   • The certificate is created.

     Go to $GOPATH/src/github.com/derekparker, and create your own directory if not

     cd $GOPATH/src/github.com/derekparker
     git clone https://github.com/derekparker/delve.git
     cd delve
     # install
     CERT=dlv make install
     
     go get -u -v github.com/nsf/gocode
     go get -u -v github.com/rogpeppe/godef
     go get -u -v github.com/golang/lint/golint
     go get -u -v github.com/lukehoban/go-outline
     go get -u -v sourcegraph.com/sqs/goreturns
     go get -u -v golang.org/x/tools/cmd/gorename
     go get -u -v github.com/tpng/gopkgs
     go get -u -v github.com/newhook/go-symbols
     go get -u -v golang.org/x/tools/cmd/guru