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Date: Tue, 17 Jun 2025 10:12:44 -0700 (PDT)
To: Radek Barton <radek.barton@microsoft.com>
Subject: Re: [EXTERNAL] Cygwin /usr/bin/clang with Windows Aarch64 support?
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From: Jeremy Drake via Cygwin <cygwin@cygwin.com>
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On Tue, 17 Jun 2025, Radek Barton via Cygwin wrote:

> Hello Sebastian.
>
> AFAIK, LLVM has no *-pc-cygwin targets support and there is no-one trying to change that.

We're working on that.  LLVM 21.x should be much better in that regard.
There has been no effort towards aarch64-pc-cygwin though, but also
nothing that would actively prevent that.

> Does Cygwin /usr/bin/clang has Aarch64 support, to compile native
> Windows Aarch64 binaries if Cygwin-x86-64 runs on Windows Aarch64?

I don't know about the old unmaintained version currently available, but
we're working on getting LLVM/clang 20.x packaged that has all the
architectures enabled, and can be used to cross-compile for
aarch64-w64-mingw32 with https://github.com/mstorsjo/llvm-mingw
./build-all --host-clang


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