DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 528AeLnZ1410121
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 4B51E3858D20
Message-ID: <bf01302d-aa70-4532-b1c8-169e13cd7b25@gmail.com>
Date: Sat, 8 Mar 2025 11:39:15 +0100
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: mv error building LilyPond tests, maybe MAX_PATH related
To: cygwin AT cygwin DOT com
References: <CAPF+3FGs8YnUaa+EKnc=76=0=jECrLFPH866ExgNkyba8Kp_iQ AT mail DOT gmail DOT com>
Content-Language: en-US
In-Reply-To: <CAPF+3FGs8YnUaa+EKnc=76=0=jECrLFPH866ExgNkyba8Kp_iQ@mail.gmail.com>
Precedence: list
From: Marco Atzeri via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; 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>

On 08/03/2025 06:10, Saul Tobin via Cygwin wrote:
> Hello,
> 
> I've encountered a kind of bizarre error when trying to build GNU LilyPond
> regression tests on Cygwin 3.5.7-1 on Windows 11. For one and only one
> folder, `mv` fails with `mv: cannot move './out-test' to
> './out-test-baseline': Permission denied`. The distinguishing feature of
> the failing folder seems to be that it contains its own subfolder with a
> copy of all the regtest files, some of which have rather long names. When I
> remove this subfolder, the error goes away. The error also goes away if I
> execute the rename in a way that forces a physical move of the files.
> 
> Based on this, it appears to me that when an in-place rename is performed
> by `mv`, it calls into a Win32 API that enforces the 260 character
> MAX_PATH. I can see in the trace that the error is occurring within a Win32
> call stack for resolving absolute path names, though the error code isn't
> specific enough to distinguish the precise reason for the failure.
> 
> I tried enabling LongPathsEnabled in the registry, but I get the same `mv`
> error after doing so and rebooting.
> 
> I reported this as a LilyPond bug with some further detail here
> https://gitlab.com/lilypond/lilypond/-/issues/6799, but the initial
> sentiment seems to be that this is an upstream issue.
> 
> In some respect this doesn't seem like a specifically Cygwin issue, since I
> encountered the same error in the same spot on WSL2 if the build tree was
> on the Windows filesystem. But I'm guessing if anybody knows how to answer
> this, it's probably folks on this list.
> 
> Any ideas what's going on here and how I might get it working? Is this a
> known type of issue? Is it a bug? If it's a bug, what is it a bug in?
> 
> Right now, LilyPond's developer documentation basically just says not to
> bother trying to compile on Windows. It would be REALLY nice to change
> that, and this is the only blocking issue from recommending Cygwin as a
> viable compilation environment for LilyPond development.
> 
> Thanks in advance for your help,
> 
> Saul
> 

Hi Saul,
it is a know issue by long but I never did an analysis like yours to 
identify the root cause.

I just skip to run the full tests when uploading the lilypond pkg

When I have extra time I will look again

Regards
Marco


-- 
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