[cfe-dev] Clang tests are using "clang-scan-deps" from host system?

[David Blaikie via cfe-dev]

Sounds like a bug to me. There's a list of tool replacements in the lit
configs somewhere I think, that's probably missing clang-scan-deps, I
guess. (maybe we could make this mechanism more robust/less easy to
skip/misuse)

Probably worth cc'ing/pulling someone into this thread who works on
clang-scan-deps, folks don't always keep up on all the mailing lists.

On Thu, Jul 29, 2021 at 10:58 AM Xun Li via cfe-dev <cfe-dev at lists.llvm.org>
wrote:

> I was playing with modules in Clang.
> And I noticed that when running Clang tests, they are using the
> "clang-scan-deps" tool from my host system instead of from the build
> dir.
> For example, if I do:
> ```
> bin/llvm-lit ../clang/test/ClangScanDeps/modules-pch.c -a
> ```
> And look at the output commands, I see things like:
> ```
> : 'RUN: at line 11';   clang-scan-deps -compilation-database
>
> /Users/xun/OSS/llvm-project/build_clang/tools/clang/test/ClangScanDeps/Output/modules-pch.c.tmp/cdb.json
> -format experimental-full    -generate-modules-path-args -module
> -files-dir
> /Users/xun/OSS/llvm-project/build_clang/tools/clang/test/ClangScanDeps/Output/modules-pch.c.tmp/build
> >>
> /Users/xun/OSS/llvm-project/build_clang/tools/clang/test/ClangScanDeps/Output/modules-pch.c.tmp/result_pch.json
> ```
> where clang-scan-deps is not using an absolute path. I verified this
> by adding "clang-scan-deps --version" in the test, and it matches my
> system version, instead of the build version.
>
> Is this a bug?
>
> --
> Xun
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