[llvm] [Github] Enable long paths in windows CI Container (PR #184224)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-github-workflow

Author: Aiden Grossman (boomanaiden154)

<details>
<summary>Changes</summary>

Otherwise we run into issues with file paths >260 characters.

https://github.com/ninja-build/ninja/issues/2400
https://gitlab.kitware.com/cmake/cmake/-/issues/22435

---
Full diff: https://github.com/llvm/llvm-project/pull/184224.diff


1 Files Affected:

- (modified) .github/workflows/containers/github-action-ci-windows/Dockerfile (+5) 


``````````diff
diff --git a/.github/workflows/containers/github-action-ci-windows/Dockerfile b/.github/workflows/containers/github-action-ci-windows/Dockerfile
index 508c5964bea19..f3f421a30dc49 100644
--- a/.github/workflows/containers/github-action-ci-windows/Dockerfile
+++ b/.github/workflows/containers/github-action-ci-windows/Dockerfile
@@ -89,6 +89,11 @@ RUN powershell -Command \
 RUN git config --system core.longpaths true & \
     git config --global core.autocrlf false
 
+# Enable long paths so that ninja can work with paths longer than 260 characters.
+RUN powershell -Command \
+    New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem" \
+    -Name "LongPathsEnabled" -Value 1 -PropertyType DWORD -Force
+
 ARG RUNNER_VERSION=2.331.0
 ENV RUNNER_VERSION=$RUNNER_VERSION
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/184224