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Remove Homebrew LLVM during macOS CI setup #125763

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Merged
akoeplinger merged 5 commits into from
Mar 19, 2026
Merged

Remove Homebrew LLVM during macOS CI setup #125763

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cba74d7
Prefer AppleClang from Xcode toolchain on macOS
steveisok Mar 19, 2026
4fbe548
Use Apple toolchain shim instead of raw Xcode clang on macOS
steveisok Mar 19, 2026
f9a6565
Export CC and CXX in gen-buildsys.sh so CMake uses the resolved compiler
steveisok Mar 19, 2026
5c5fdb4
Remove Homebrew LLVM during macOS CI setup
steveisok Mar 19, 2026
5791617
Change Homebrew LLVM uninstallation to llvm@18
akoeplinger Mar 19, 2026
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7 changes: 7 additions & 0 deletions eng/common/native/install-dependencies.sh
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Expand Up @@ -47,6 +47,13 @@ case "$os" in
export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
# Skip brew update for now, see https://github.com/actions/setup-python/issues/577
# brew update --preinstall

# Remove Homebrew LLVM if present. The CI runner image may ship with a
# Homebrew LLVM whose libraries (e.g., libunwind.dylib) are the wrong
# architecture or conflict with the Apple SDK, breaking native linking.
# The build uses Apple clang from /usr/bin/clang exclusively.
brew uninstall --ignore-dependencies llvm 2>/dev/null || true
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brew bundle --no-upgrade --file=- <<EOF
brew "cmake"
brew "icu4c"
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