How can I run a script that uses cl.exe without Developer PowerShell?

If you're asking about `cl.exe`, which is part of MSVC, take a look at the batch file that starts the Visual Studio developer environment. You'll find some environment variables being set there. I recommend you replicate this in your PowerShell script. Just setting the path to `cl.exe` might not be enough—you might need other variables that are set when launching from that batch file.

You can directly find the path to `cl.exe` on your system and run it using its full path. A reliable method would be to check the registry for the Visual Studio installation location and then search within that for `cl.exe`. But if you want a quicker solution, try this PowerShell command to find it in the default installation directories:

```powershell
$FilePath = Get-ChildItem 'C:Program Files', 'C:Program Files (x86)' -Recurse -Filter cl.exe | select -First 1 -ExpandProperty FullName
& $FilePath
```

You could also just grab the batch file that initializes the Visual Studio command prompt, modify it, and run your own version. Just copying that batch file gives you everything set up correctly—any environment variables or settings you might need.

Another option is to have users add the `cl.exe` path to their system PATH variable, or just execute it with its full path instead of just calling `cl.exe`. It's a pretty common issue, and you can check out these Stack Overflow links for more background:
- https://stackoverflow.com/questions/4822400/register-an-exe-so-you-can-run-it-from-any-command-line-in-windows
- https://stackoverflow.com/questions/50739853/how-to-retrieve-the-path-to-cl-exe

What exactly is 'Developer PowerShell'? 🤔