[release/8.0-staging] Remove Homebrew LLVM during macOS CI setup - Part 2#125784
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steveisok wants to merge 1 commit intodotnet:release/8.0-stagingfrom
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[release/8.0-staging] Remove Homebrew LLVM during macOS CI setup - Part 2#125784steveisok wants to merge 1 commit intodotnet:release/8.0-stagingfrom
steveisok wants to merge 1 commit intodotnet:release/8.0-stagingfrom
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Pull request overview
Removes potentially conflicting Homebrew LLVM from macOS CI dependency setup to prevent native linking failures caused by /usr/local/lib picking up incompatible LLVM-provided libraries, while keeping the build on Apple clang (/usr/bin/clang).
Changes:
- Uninstall Homebrew
llvm(if present) during macOS-family dependency installation to avoid linker/library conflicts. - Add inline documentation explaining the rationale and symptoms the change mitigates.
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steveisok
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The CI runner image may ship with a Homebrew LLVM whose libraries (e.g., an x86_64-only libunwind.dylib in /usr/local/lib) conflict with the Apple SDK and break native linking. The build uses Apple clang from /usr/bin/clang exclusively and does not need Homebrew LLVM. Backport of dotnet#125763
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This was referenced Mar 19, 2026
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not needed anymore now that the image update was reverted |
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The CI runner image may ship with a Homebrew LLVM whose libraries (e.g., an x86_64-only libunwind.dylib in /usr/local/lib) conflict with the Apple SDK and break native linking. The build uses Apple clang from /usr/bin/clang exclusively and does not need Homebrew LLVM.
Backport of #125763