[libc-commits] [libc] [libc] implement vdso (PR #91572)

[Schrodinger ZHU Yifan via libc-commits]

SchrodingerZhu wrote:

@michaelrj-google CI build should be working now. 

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However, there  is a complication:
![image](https://github.com/llvm/llvm-project/assets/20108837/d4b63d0c-aad9-4aa6-a899-50a0686e89c0)

In seems that the object library in `OSUtil` is not collected into the static library. I am looking into it


https://github.com/llvm/llvm-project/pull/91572