This patch adds a LLVM_FORCE_VC_REVISION option to force a custom
VC revision to be included instead of trying to fetch one from a
git command. This is helpful in environments where git is not
available or is non-functional but the vc revision is available
through some other means.
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
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
Find dependent scripts of GenerateVersionFromVCS in current directory
rather than ../../cmake/modules. I do not see any reason why the former
would not work and The latter is incorrect when GenerateVersionFromVCS
is used from install directory (i.e. in stand-alone builds).
Differential Revision: https://reviews.llvm.org/D57996
llvm-svn: 353674
Previously, there were two different scripts for generating VCS headers:
one used by LLVM and one used by Clang and lldb. They were both similar,
but different. They were both broken in their own ways, for example the
one used by Clang didn't properly handle monorepo resulting in an
incorrect version information reported by Clang.
This change unifies two the scripts by introducing a new script that's
used from both LLVM, Clang and lldb, ensures that the new script
supports both monorepo and standalone SVN and Git setups, and removes
the old scripts.
Differential Revision: https://reviews.llvm.org/D57063
llvm-svn: 353268
Previously, there were two different scripts for generating VCS headers:
one used by LLVM and one used by Clang. They were both similar, but
different. They were both broken in their own ways, for example the one
used by Clang didn't properly handle monorepo resulting in an incorrect
version information reported by Clang.
This change unifies two the scripts by introducing a new script that's
used from both LLVM and Clang, ensures that the new script supports both
monorepo and standalone SVN and Git setups, and removes the old scripts.
Differential Revision: https://reviews.llvm.org/D57063
llvm-svn: 352729
