CODEWITHSUNDEEP
govisual-studio-code
PrecisionPete
PrecisionPete

Reputation: 3401

How to compile multiple go files in vscode launch.json?

If I have several go files that need to be in the main package, how can I specify them to be compiled in the launch.json? I would refactor them into packages. But this project is resisting.

i.e. To run them on the command line, I have to use:

go run main.go stuff.go other.go

How would I include that in the launch.json file?

{
    "name": "Launch myprog",
    "type": "go",
    "request": "launch",
    "mode": "debug",
    "program": "${workspaceRoot}/cmd/myprog/main.go",
     "args": ["param"]
},

I've tried the obvious ways. I would like to do some debugging.

So... How do I specify in launch.json to compile the package in the folder and not just one specific file?

If go run main.go is equivalent to "program": "${workspaceRoot}/cmd/myprog/main.go"

Then, go run . is equivalent to what? "program": "${workspaceRoot}/cmd/myprog/[?????]"

Because the obvious didn't work for me.

Thanks

Upvotes: 3

Views: 6000

Answers (5)

Vladimir Mur
Vladimir Mur

Reputation: 1

Mulitple go files with func main() in the same folder is convinient for simple code snippents.

You cannot use go build on that folder. Go will give an error:

main redeclared in this block

But you can run individual files using command

go run file.go

To run single file in VSCode you have to add Launch file configuration to VSCode

  1. Press Gear next to Run triangle button Open 'launch.json'
  2. In the lower right part of the screen appears button Add configuration. Press it.
  3. Select '{} Go: Launch file' option from the list.

Added new configuration would be:

        {
            "name": "Launch file",
            "type": "go",
            "request": "launch",
            "mode": "debug",
            "program": "${file}"
        },
  1. Save launch.go
  2. To run your file select 'Launch file' in the drop down list next to Run triangle button.

Upvotes: 0

farbo
farbo

Reputation: 11

The way this worked for me:

  1. Run go mod init inside the package directory to start a module. This way go build works without specifying the .go files
  2. In the launch.json for your project, set the value of program field to the root directory of the package, without specifying any source file i.e. in your case, it would be "program": "${workspaceRoot}/cmd/myprog/"

Upvotes: 0

PrecisionPete
PrecisionPete

Reputation: 3401

There must have been some other problem with my system. Because at some point it all just started working... Though I am also now using the nightly version of the plugin golang.go-nightly. It fixed the missing root debug feature beautifully...

This now works fine...

{
   "name": "Prog",
   "type": "go",
   "request": "launch",
   "mode": "debug",
   "program": "${workspaceRoot}/src/cmd/prog/",
   "args": [""]
},

Upvotes: 3

Joshua DeMoss
Joshua DeMoss

Reputation: 131

Using "program": "." worked for me:

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Launch Package",
      "type": "go",
      "request": "launch",
      "mode": "auto",
      "program": ".",
      "cwd": "${workspaceFolder}",
    }
  ]
}

Upvotes: 9

Marcel Kohls
Marcel Kohls

Reputation: 1897

I believe you are mixing some concepts in your question, so let me try to answer step by step:

  • In vscode the launch.json file is created automatically by vscode to help it on debugging, it is not part of the go language and it does not define how your application will run or will be compiled. For more reference take a look at How To Debug Go Code with Visual Studio Code.

  • Compile your application (go build) means that all the files related to a specific package will be transformed in a binary. Take a look in this article to understand how the packages are linked to your application compile.

  • Run your application can be done using go run which will have almost the same effect as compiling except that this command does not generate your final shareable binary file. Check go run vs go build

Now, regarding to your question, if you need to enable the proper debugging on vscode, take a look on gopls-vscode, but if your code is not compiling because of dependencies on other files/packages then take a look on the tutorial about packages mentioned above.

I hope that I can give you some help.

Upvotes: 0

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