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better windows setup instructions

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Signed-off-by: Anton-4 <17049058+Anton-4@users.noreply.github.com>
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Anton-4 2022-09-02 19:42:56 +02:00 committed by GitHub
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BUILDING_FROM_SOURCE.md
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@ -188,16 +188,21 @@ Installing LLVM's prebuilt binaries doesn't seem to be enough for the `llvm-sys`
1. Download the custom LLVM 7z archive [here](https://github.com/PLC-lang/llvm-package-windows/releases/tag/v13.0.0).
1. [Download 7-zip](https://www.7-zip.org/) to be able to extract this archive.
1. Extract the 7z file to where you want to permanently keep the folder.
1. In powershell, set the `LLVM_SYS_130_PREFIX` environment variable (check [here](https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_environment_variables?view=powershell-7.2#saving-changes-to-environment-variables) to make this a permanent environment variable):
1. In powershell, set the `LLVM_SYS_130_PREFIX` environment variable (check [here](https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_environment_variables?view=powershell-7.2#saving-environment-variables-with-the-system-control-panel) to make this a permanent environment variable):
```
<# ! Replace YOUR_USERNAME ! #>
$env:LLVM_SYS_130_PREFIX = 'C:\Users\YOUR_USERNAME\Downloads\LLVM-13.0.0-win64'
```
1. add the LLVM bin to the path to prevent issue #3952:
```
<# ! Replace YOUR_USERNAME ! #>
[Environment]::SetEnvironmentVariable(
"Path",
[Environment]::GetEnvironmentVariable("Path", "User") + ";C:\Users\anton\Downloads\LLVM-13.0.0-win64\bin",
[Environment]::GetEnvironmentVariable("Path", "User") + ";C:\Users\YOUR_USERNAME\Downloads\LLVM-13.0.0-win64\bin",
"User"
)
```
Once all that was done, `cargo build` ran successfully for Roc!
### Build speed on WSL/WSL2