DKIM-Filter: OpenDKIM Filter v2.11.0 delorie.com 488LbtTZ390097
Authentication-Results: delorie.com;
	dkim=pass (1024-bit key, unprotected) header.d=cygwin.com header.i=@cygwin.com header.a=rsa-sha256 header.s=default header.b=vusmT+TY
X-Recipient: archive-cygwin AT delorie DOT com
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 2DC2C385DDF0
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1725831473;
	bh=AcG6l7y2NtTP2aTInZbxtNuT8wrmRbpHuu7yG0GY6GE=;
	h=Date:Subject:To:References:In-Reply-To:List-Id:List-Unsubscribe:
	 List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:
	 From;
	b=vusmT+TYaf+hI1Za27pjx5FpJnkSjWFbHpKQawqtVh/chYOyu9aeEIGt1HJlOb+ga
	 Z2LJTSGDGkOGpEahNdp3u0+IBnmG5N2daDpJhSubIRJSFe4d0pyXpYHx5OifoN4Wiv
	 MSMN1Eokfasw7PtfDVwZ0hNvuLj0PT7f40gzZH9I=
X-Original-To: cygwin AT cygwin DOT com
Delivered-To: cygwin AT cygwin DOT com
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 49E7C3858C66
ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 49E7C3858C66
ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1725831422; cv=none;
 b=FkgWwDMM9KLtC43y3IfXl9V0fp4eRnil32fcbOq1GRIJJQF0nI4mlTp9qXKV9y3tSepHlpQpTCsrsHVsGREuo9liaIhgppTCrbTbT7dfPOVDw/oFk+UbXuU+ghnWBm4uNfzfvwpcfETguJS6EvcZGXOh8t6hAbwlRCH8YY0N6cA=
ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key;
 t=1725831422; c=relaxed/simple;
 bh=apJiBepBnoQWPIw33PTN7LBfGS2WVcqPe8y5e2wKU3I=;
 h=Message-ID:Date:MIME-Version:Subject:To:From;
 b=H7YuebndFmoFCdCJ8JZIoeFthGbz8AzroMCzuLi7WRmavhJFH6klCzGXBTCnbBeO7lQJjWvnCKglZVHobHJg19mlVsPDyRnVRApx3CWSvagKw5SE8RE/ryiGoMrKJuqz0iN9syTZxba1ZGBtme1yKKEpgEl7obwQ8iKAjCn7o94=
ARC-Authentication-Results: i=1; server2.sourceware.org
Message-ID: <49dca3b5-6545-44df-9535-23819689fc35@SystematicSW.ab.ca>
Date: Sun, 8 Sep 2024 15:36:57 -0600
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: Status of Cygwin on Windows/ARM64?
Content-Language: en-CA
To: cygwin AT cygwin DOT com
References: <CAN0SSYw_3T1qruepXPvWvEJE2uE8KHEEgqT8hMty6YAYDhAeKw AT mail DOT gmail DOT com>
 <e6efaeee-eb01-b9b5-ccca-fc2ae6ebdc43 AT cam DOT ac DOT uk>
 <CAN0SSYxyMPLefp66rPW9sgW+ipEXtX39wvriUjVrBxVsbaGZ4Q AT mail DOT gmail DOT com>
Organization: Systematic Software
In-Reply-To: <CAN0SSYxyMPLefp66rPW9sgW+ipEXtX39wvriUjVrBxVsbaGZ4Q@mail.gmail.com>
X-Rspamd-Queue-Id: 59F2B20024
X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
 RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS, SPF_PASS, TXREP,
 UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.6
X-Rspamd-Server: rspamout01
X-Stat-Signature: gfnh6snnftb4eiqaajqseqoqqgzgmq14
X-Session-Marker: 427269616E2E496E676C69734053797374656D6174696353572E61622E6361
X-Session-ID: U2FsdGVkX19bPtO9AF3wzdYZ1AcIxNlONajF/QWXJ5E=
X-HE-Tag: 1725831418-905597
X-HE-Meta: U2FsdGVkX1/D7y22NZc0e6TgsQ19zYyat2zRf0CAFI0uEDU7eaRMDyxEcaBQw4RCYH8teWjF9Qf17LJqqzsBZ56YXb1Liw3xAe1jPmJUhkv7OvAHmv1zz9xNsE4z8xHsH9VLyLi/WFbWfVnw5cr382z1XxMCKfqGkh8vdUpKlYoPH3xfUrIwg3hL8wEnz73BRpCp+t/A5ox8zwgiR+ZT94FwFqyDsG8s1KC7XIrWg6PjlBnRtvBOBVp6dD5jpItKFN/DXKRMOJiXTtArez21oYFhAGcZ9GPRNfRRCWbLUXh6SMoYNWgBKYut8DfEFGaufRO8A5OBfdZWSdCtD7cTz4voR3UeplHdLw9XRxKRG9ELtuKVI+4qmg==
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
 server2.sourceware.org
X-BeenThere: cygwin AT cygwin DOT com
X-Mailman-Version: 2.1.30
Precedence: list
List-Id: General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe: <https://cygwin.com/mailman/options/cygwin>,
 <mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive: <https://cygwin.com/pipermail/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe: <https://cygwin.com/mailman/listinfo/cygwin>,
 <mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
Cc: Brian Inglis <Brian DOT Inglis AT SystematicSW DOT ab DOT ca>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Errors-To: cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from base64 to 8bit by delorie.com id 488LbtTZ390097

On 2024-09-08 07:45, Mark Liam Brown via Cygwin wrote:
> On Sun, Sep 8, 2024 at 10:50 AM Arthur Norman <acn1 AT cam DOT ac DOT uk> wrote:
>>
>> I have been VERY happily pleased about how well Cygwin runs using
>> Prism on Windows/ARM64. I can build and test my x86_64 code there using it
>> despite the underlying CPU being an ARM. My genuine Windows/x86_64 machine
>> is not that new these days. Using a stack Macbook-m1/UTM/Windows11-ARM64
>> runs the proggrams in build using cygwin on that Windows as x86_64 code via
>> Prism and is quite close in speed to that which I observe on my "real"
>> Windows computer.
> 
> Clarification: I was asking for NATIVE ARM64 Cygwin binaries. The
> x86_64 to ARM64 emulation feels like having a racecar driving in
> molasses, just annoying users, and is thus no option.

Someone would probably have to do a decent amount of work to figure out how to 
get fork emulation working natively under Arm64 Windows, and other critical core 
emulation functions, on Arm64 Windows machines, probably as part of a paid or 
lengthy academic project, to donate to the volunteer Cygwin project.

Any CS/EE PhD candidates out there looking for a project, or embedded engineers 
needing to support POSIX toolchains and environments under native Arm64 Windows?

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry


-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple