🍒 [next] [swift/cxx-interop] Move swift/bridging header to clang resource dir and suffix it with .h#13298
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🍒 [next] [swift/cxx-interop] Move swift/bridging header to clang resource dir and suffix it with .h#13298j-hui wants to merge 2 commits into
j-hui wants to merge 2 commits into
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The swift/bridging header provides annotation macros (e.g., SWIFT_SHARED_REFERENCE, SWIFT_COMPUTED_PROPERTY) for C++ code that interoperate with Swift. Previously, this header was shipped in the Swift toolchain's usr/include, which is not part of Clang's default search paths in the OSS toolchain, which forced users to manually pass -I flags to find the header. By placing it in Clang's resource directory, the header is automatically discoverable by both clang and swift (via its embedded Clang instance), since both already search <clang-resource-dir>/include by default. rdar://136716355 (cherry picked from commit c19415a)
Some SWIFT_* annotation macros are usable from C and ObjC, not just C++. Rename the extensionless header to swift/bridging.h, and keep around swift/bridging as a compatibility alias for existing users. rdar://150298665 (cherry picked from commit 117199f)
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@swift-ci please test llvm |
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Failures seem unrelated: They appear to also be happening elsewhere: https://ci.swift.org/job/swiftlang-clang-stage1-RA/job/next/128/ |
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@swift-ci please test llvm |
egorzhdan
approved these changes
Jul 8, 2026
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Place the
swift/bridgingheader in Clang's resource directory, so that it is automatically discoverable by both clang and swift. Also, add.hsuffix to the file so that headers can#include <swift/bridging.h>.Cherry-picked from #12861 and #13083
rdar://136716355
rdar://150298665