前提：本文假定你的mac已经配置好GOROOT和GOPATH 2个环境变量！！！

下载dlv

命令行上操作：
$ git clone https://github.com/go-delve/delve.git $GOPATH/src/github.com/go-delve/delve

注意：如果你本地已经下载过dlv，可以删除重新下载(先备份好)，git安装自己搞定，很简单。

下载完成如下所示

localhost:~ zhenhua$ git clone https://github.com/go-delve/delve.git $GOPATH/src/github.com/go-delve/delve
Cloning into ‘/Users/zhenhua/go/src/github.com/go-delve/delve’…
remote: Enumerating objects: 21408, done.
remote: Counting objects: 100% (1612/1612), done.
remote: Compressing objects: 100% (987/987), done.
remote: Total 21408 (delta 870), reused 1186 (delta 582), pack-reused 19796
Receiving objects: 100% (21408/21408), 28.09 MiB | 89.00 KiB/s, done.
Resolving deltas: 100% (14223/14223), done.

在命令行中cd 到 dlv下载所在目录：

delve zhenhua$ make install
Password:
go install -tags=macnative “-ldflags=-s -X main.Build=9013a121d8bc6359018bccfaa1f256a8870d01c7” github.com/go-delve/delve/cmd/dlv
codesign -s dlv-cert /Users/zhenhua/go/bin/dlv

此时可以在你的GOPATH/bin目录下看到dlv可执行文件

敲入dlv验证安装成功

$ dlv
Delve is a source level debugger for Go programs.
Delve enables you to interact with your program by controlling the execution of the process,
evaluating variables, and providing information of thread / goroutine state, CPU register state and more.
The goal of this tool is to provide a simple yet powerful interface for debugging Go programs.
Usage:
…中间省略一大段…
Additional help topics:
dlv backend Help about the --backend flag.
dlv log Help about logging flags.
dlv redirect Help about file redirection.
Use “dlv [command] --help” for more information about a command.。

此时dlv在本地磁盘上的目录结构如下

FYI: 我mac机器的GOPATH为 /Users/zhenhua/go, 正是对应下图的go文件夹

注意上图中多了一个文件夹，请往下看！

此时打开你的goland，打开一个项目，设置好断点，启动项目，你会发现如下错误：

err running program …"/Users/xxx/go/delve/delve/cmd/dlv/mac/dlv"
(in directory “<你的本地go项目路径>”): error=2, No such file or directory…

注意错误提示，缺少 /Users/xxx/go/delve/delve/cmd/dlv/mac/dlv文件！

关键点：把你在生成好的、存在于$GOPATH/bin目录下的dlv文件复制到 错误提示中提到的目录中，如我上面截图所示,比起刚安装编译发的dlv正是多出了我复制的mac目录及dlv文件。

依据提示在相应目录下新建mac文件夹，把dlv文件复制进来，ok!再次启动goland 项目，就可以调试你的项目了，完美！截图如下：