Re: MinGW build on master fails with Error 127

[Loreno Heer <helohe@bluewin.ch>]

On 24.12.2022 15:43, Eli Zaretskii wrote:
>> Date: Sat, 24 Dec 2022 15:18:02 +0100
>> Cc: emacs-devel@gnu.org
>> From: Loreno Heer <helohe@bluewin.ch>
>>
>> I did and if I understand it correctly they basically say that they did
>> some change but it is now up to emacs to change the build behavior:
>>
>> https://github.com/msys2/MINGW-packages/issues/14573#issuecomment-1364532147
> 
> Are you building Emacs on Windows 7?  If yes, I understand what they
> are saying: that MinGW64 no longer supports Windows 7.

Yes I am building on Win 7 ESR. But it looks like I have to switch to
linux soon because everyone drops support for it.

I think in theory though their build system still supports win 7 or
older just fine. As long as I set that variable everything builds and
runs just fine.
> 
> If you build on a later version of Windows, then I don't understand
> what they are saying:
> 
>   As examples mentioned on #14452 illustrate, a package can support
>   Win7 fine but if we say to its build system that we target >Win7 the
>   resulting binary may be incompatible with Win7. This means in
>   practice that Emacs (or any other software) can't rely on using our
>   packages as runtime dependencies for supporting Win7.
> 
> Emacs will support MS-Windows versions as old as Windows 9X, as long
> as the MinGW headers and runtime support those versions.  If your
> MinGW supports only Windows versions newer than some version N, then
> Emacs cannot magically overcome this limitation, and will also support
> only versions of Windows newer than N.