Can Visual Studio Code\'s Debugger Use Build Tags for Go Programs?

Tagging for Debugging in Visual Studio Code and Delve

Debugging Go programs with build tags can be a challenge, especially when using Visual Studio Code and the Delve debugger.

Original Question:

Can the debugger be configured to use specified build tags when compiling Go programs?

Answer:

Visual Studio Code's Go plugin now supports the buildFlags key in launch.json. This allows developers to specify build tags using the format "-tags Tag".

Configuration:

Task for Building Binary with Tags:

<code class="json">{
  "version": "0.1.0",
  "command": "bash",
  "isShellCommand": true,
  "args": [""],
  "showOutput": "always",
  "tasks": [
    {
      "taskName": "buildBinWithTag",
      "command": "go",
      "args": ["build", "-o", "BinaryName", "-tags", "THISISATAG"],
      "isShellCommand": true
    }
  ]
}</code>

Launch Configuration for Debugging:

<code class="json">{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "DebugBinWithTag",
      "type": "go",
      "request": "launch",
      "mode": "exec",
      "remotePath": "",
      "port": 2345,
      "host": "127.0.0.1",
      "program": "${workspaceRoot}/BinaryName",
      "env": {},
      "args": [],
      "showLog": true,
      "preLaunchTask": "buildBinWithTag"
    }
  ]
}</code>

Example:

Using the build tag " build THISISAFLAG":

<code class="go">//+build THISISAFLAG

package main</code>

Launch Configuration:

<code class="json">{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "DebugWithTag",
      "type": "go",
      "request": "launch",
      "mode": "exec",
      ...
      "buildFlags": "-tags THISISAFLAG",
      ...
    }
  ]
}</code>

This configuration will ensure that the debugger uses the specified build tags during compilation, allowing for the execution and debugging of Go programs with different tag-dependent configurations.

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