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From:	David Allsopp <David DOT Allsopp AT cl DOT cam DOT ac DOT uk>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	RE: Cygwin x86 on Windows 10 ARM64
Date:	Wed, 11 Jul 2018 12:33:50 +0000
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Corinna Vinschen wrote:
> On Jul 11 00:36, Andrey Repin wrote:
> > Greetings, David Allsopp!
> >
> > > Brian Inglis wrote:
> > >> On 2018-07-10 03:51, David Allsopp wrote:
> > >> > I've been trying out the x86 emulation in Microsoft's ARM64
> > >> > version of Windows 10 1803.
> > >> >
> > >> > I had two issues with Cygwin x86. The first, which is simple, is
> > >> > that Windows doesn't by default create
> > >> > C:\Windows\SysWOW64\drivers\etc which causes
> > >> > /etc/postinstall/base-files-mketc.sh to exit with an error all
> > >> > the time. I wonder if there's a possible workaround to make
> > >> that less intrusive?
> > >> > The error message implies that it may have computed the wrong
> > >> > directory, which it hasn't - it's just that the directory doesn't
> exist.
> > >>
> > >> Do C:\Windows\{System32,SysNative,Sys*}\drivers\etc exist under the
> > >> emulator?
> > >> What does "cygpath -SU" show?
> >
> > > cygpath -SU gives /proc/cygdrive/c/Windows/SysWOW64
> >
> > > Checking within C:\Windows\SysWOW64\cmd.exe (i.e. x86 cmd):
> >
> > > C:\Windows\System32\drivers\etc exists and contains expected files
> > > C:\Windows\Sysnative\drivers\etc exists and contains expected files
> > > (looks identical to System32, as you'd hope)
> > > C:\Windows\SysArm32\drivers does not contain an etc directory (but
> > > wasn't referenced) C:\Windows\SysWOW64\drivers didn't contain an etc
> > > directory (I created one to silence the error)
> >
> > > So perhaps on WOW64 it would be worth falling back to Sysnative if
> > > etc isn't found? Or even just using Sysnative by default in WOW64?
> >
> > I'd suggest using Sysnative unconditionally, and fall back to System32
> > if Sysnative not found.
> 
> 
> Did anybody notice my reply from 8 hours earlier?
> https://cygwin.com/ml/cygwin/2018-07/msg00091.html

Yes! I answered Brian's first because it didn't involve downloading anything, then I tried the snapshot you'd kindly provided - but it doesn't work, for weird reasons, and I'm still looking into exactly why in order to give a helpful reply as to why!

Sorry for the lag...


David

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