Is the Visual Studio bundled clang-cl still supported?

Hi!

I'm pretty new to contributing to open source, so sorry if this is something obvious or if I'm asking in the wrong place.

I'm trying to build the latest master branch on Windows using the documented clang-cl preset, but I'm running into an issue and wasn't sure if it's something on my end or if the Visual Studio bundled clang-cl is no longer supported.

My setup

• Windows 11
• Visual Studio 2022 Community
• clang-cl 19.1.5 (the one that comes with Visual Studio)

What I ran

cmake --preset clang-cl
cmake --build --preset clang-cl-debug

The project configures fine, but the build fails with errors like:

error: cannot use 'throw' with exceptions disabled
error: cannot use 'try' with exceptions disabled

I spent some time trying to figure it out and noticed that the generated compile command doesn't seem to include /EHsc.

Just to test it, I added /EHsc locally, reconfigured, and the project built successfully.

Before posting here, I also looked at the GitHub Actions workflow and noticed that the Windows Clang CI is using:

Clang 20.1.8

from:

C:\Program Files\LLVM\bin\clang-cl.exe

whereas I'm using the Visual Studio bundled Clang 19.1.5.

So I was wondering:

• Is the Visual Studio bundled clang-cl (19.1.5) still expected to work?
• Or is the standalone LLVM installation the recommended/supported compiler now?

If I've missed something in the documentation or made a mistake while setting things up, I'd really appreciate any guidance.

Thanks!