Han Zhu ee68f612ba Second try: [clang][cmake] Add options to pass in vcs repo and revision info ...

V2: Fix cmake error when -DLLVM_APPEND_VC_REV=OFF

Clang may be built in an environment where Git is not available. In our case,
Clang is part of a larger monorepo which is not Git-based, and
GenerateVersionFromVCS was not able to get source info.

Provide options to pass in repo and revision info from cmake.
```
cmake \
  -DCLANG_VC_REPOSITORY=abc://repo.url.com \
  -DCLANG_VC_REVISION=abcd1234 \
  ...
```
This would allow us to prepare the source info beforehand and pass it to the
clang binary.

Differential Revision: https://reviews.llvm.org/D148262

2023-04-17 10:54:28 -07:00

1.7 KiB

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