Update docs for building runtime with local Roslyn #80725
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RikkiGibson
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Oct 14, 2025
docs/contributing/Building, Debugging, and Testing on Windows.md
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RikkiGibson
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RikkiGibson
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RikkiGibson
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docs/contributing/Building, Debugging, and Testing on Windows.md
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jcouv
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Oct 15, 2025
| - add `<RestoreAdditionalProjectSources><PATH-TO-YOUR-ROSLYN-ENLISTMENT>\artifacts\packages\Debug\Shipping\</RestoreAdditionalProjectSources>` using the local path to your `roslyn` repo to `Directory.Build.props` | ||
| - add `<UsingToolMicrosoftNetCompilers>true</UsingToolMicrosoftNetCompilers>` and `<MicrosoftNetCompilersToolsetVersion>4.1.0-dev</MicrosoftNetCompilersToolsetVersion>` with the package version you just packed (look in above artifacts folder) to `eng/Versions.props` | ||
| 1. Make sure that you can build the `runtime` repo as baseline (run `build.cmd libs+libs.tests`, which should be sufficient to build all C# code, installing any prerequisites if prompted to, and perhaps `git clean -xdf` and `build.cmd -restore` initially - see [runtime repo documentation](https://github.com/dotnet/runtime/blob/main/docs/workflow/README.md) for specific prerequisites and build instructions) | ||
| 2. `build.cmd -pack -c Release` on your `roslyn` repo |
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Why change the default? I thought it's useful to get the Debug build if I don't do anything special
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Adjusting the docs for building the runtime with local Roslyn. Attempting to improve clarity and indicate conditions when using a release mode or debug mode compiler is more preferable. @jcouv for review.