[llvm-dev] Showcase of the Windows/ARM64/MinGW target

[Hayden Livingston via llvm-dev]

So are you saying that LLVM can be built as ARM64 on Windows now?
CMake doesn't show me an option for ARM64 when using MSVC on Windows.
I have the latest CMake.

On Mon, May 21, 2018 at 2:34 AM, Martin Storsjö via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> Hi,
>
> At the Build conference recently, Microsoft had a session about Windows on
> ARM(64), [1]. As case example of a large, nontrivial app rebuilt for this
> arch, they demonstrated VLC.
>
> The presentation claimed that this was built with MSVC, with zero changes to
> the source.
>
> This actually isn't true; the app that was demonstrated was actually built
> with Clang and LLD with mingw-w64 as SDK (and there had been quite a few
> minor fixes throughout the codebase to make it all build both with
> clang/libc++ for windows, and for windows on non x86 targets).
>
> Despite the pretty drastic miscommunication, I think it was nice to have at
> least the output from these tools demonstrated. (The presenter was reminded
> about how it actually was built after the presentation; apparently this
> information had been lost somewhere along the chain.)
>
> And as a fun fact, it can be mentioned that a large amout of the
> windows/arm64 support in LLVM/LLD was developed before I even had access to
> this OS for testing, or even MSVC for reference - most of it was developed
> and tested just with wine (bootstrapped from a handful of reference
> windows/arm64 binaries).
>
> Thanks to everybody who have helped make this happen!
>
> // Martin
>
> [1] https://www.youtube.com/watch?v=vdYIaUeZnqc
>
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