Add re2 shim for Buck2 OSS builds#17664
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larryliu0820 merged 2 commits intomainfrom Feb 24, 2026
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The tokenizers BUCK file references fbsource//third-party/re2:re2, which resolves to shim_et//third-party/re2:re2 in OSS builds. This target didn't exist, causing Buck2 build failures. Add a shim cxx_library in shim_et/third-party/re2/ that re-exports from the actual re2 build in extension/llm/tokenizers/third-party. The shim is gated behind runtime.is_oss so it's a no-op internally. This PR was authored with the help of Claude.
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/17664
Note: Links to docs will display an error until the docs builds have been completed. ❌ 2 New FailuresAs of commit 9263bbe with merge base aebf42e ( NEW FAILURES - The following jobs have failed:
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This is a follow-up of #17638 since it's breaking internal.
The tokenizers BUCK file references fbsource//third-party/re2:re2, which resolves to shim_et//third-party/re2:re2 in OSS builds. This target didn't exist, causing Buck2 build failures.
Add a shim cxx_library in shim_et/third-party/re2/ that re-exports from the actual re2 build in extension/llm/tokenizers/third-party. The shim is gated behind runtime.is_oss so it's a no-op internally.
This PR was authored with the help of Claude.