Hi, In short, I would like to hear what others think about using clang(-cl) for building skia. Why? See this video from Lubos, showing skia raster performance on Windows: <https://youtu.be/iSo4wVtGQ2A>. Above is clang-cl, below is MSVC. The reason for the difference is that skia developers focus on good performance with clang, so building their codebase with gcc or msvc works, but the result is not as great as it could be. This would be the benefit. (This is raster rendering; if the needed HW is in place, then Vulkan rendering is used, and that's not a problem with msvc/gcc, either.) Regarding the cost, clang-cl is actually just 1 more click when you install Visual Studio 2019, it's not something you need to download from llvm.org separately. Current state is that you get a more or less silent warning from configure if clang is missing; and it's used to build skia (and only skia, to be conservative) if it's found. I think it would make sense to make this more strict and: 1) Make the warning more visible, i.e. a yellow warning at the end of configure, that is actually noticed by most people. 2) Make the warning an error in case of release builds (or something like that). What do others think? Thanks, Miklos
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