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Date: Fri, 26 Jan 2024 07:36:25 -0500
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To: Michael Paquier <michael@paquier.xyz>,
 Dave Cramer <davecramer@postgres.rocks>
Cc: Anthony Roberts <anthony.roberts@linaro.org>,
 Peter Eisentraut <peter@eisentraut.org>, Daniel Gustafsson
 <daniel@yesql.se>, Tom Lane <tgl@sss.pgh.pa.us>,
 Mike Holmes <mike.holmes@linaro.org>, Andres Freund <andres@anarazel.de>,
 Thomas Munro <thomas.munro@gmail.com>,
 PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
 Lina Iyer <lina.iyer@linaro.org>
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From: Andrew Dunstan <andrew@dunslane.net>
Subject: Re: [PATCH] Add native windows on arm64 support
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On 2024-01-25 Th 20:32, Michael Paquier wrote:
> On Thu, Jan 25, 2024 at 04:52:30PM -0500, Dave Cramer wrote:
>> On Thu, 25 Jan 2024 at 16:32, Andrew Dunstan <andrew@dunslane.net> wrote:
>>> On 2024-01-25 Th 16:17, Dave Cramer wrote:
>>> Yeah, I think the default Developer Command Prompt for VS2022 is set up
>>> for x86 builds. AIUI you should start by executing "vcvarsall x64_arm64".
>> Yup, now I'm in the same state you are
> Wait a minute here.  Based on [1], x64_arm64 means you can use a x64
> host and you'll be able to produce ARM64 builds, still these will not
> be able to run on the host where they were built.  How much of the
> patch posted upthread is required to produce such builds?  Basically
> everything from it, I guess, so as build dependencies can be
> satisfied?
>
> [1]: https://learn.microsoft.com/en-us/cpp/build/building-on-the-command-line?view=msvc-170


If you look at the table here x86 and x64 are the only supported host 
architectures. But that's OK, the x64 binaries will run on arm64 (W11 
ARM64 has x64 emulation builtin). If that didn't work Dave and I would 
not have got as far as we have. But you want the x64_arm64 argument to 
vcvarsall so you will get ARM64 output.


cheers


andrew

--
Andrew Dunstan
EDB: https://www.enterprisedb.com