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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.arch
Subject: Re: is Vax addressing sane today
Date: Sun, 29 Sep 2024 19:45:16 +0300
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On Sun, 29 Sep 2024 09:39:27 -0700
Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:

> Michael S <already5chosen@yahoo.com> writes:
> 
> > On Sat, 28 Sep 2024 23:59:23 -0700
> > Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:
> >  
> [...]
> >> I am currently in the position of needing to take some code
> >> written for Linux/Unix and get it running in MS Windows.
> >>
> >> My attempts to use MSVC have been frustrating, because of some
> >> limitations of that environment.  The two most prominent are
> >> these:  long double is only 64 bits, and there are no integer
> >> types of 128 bits that I could find.
> >>
> >> Are there any MSVC folks here who can help with these problems?
> >> I am not an MSVC expert by any means and easily could have missed
> >> something.
> >>
> >> I should mention that the code is written in C, not C++, and that
> >> is not something I am at liberty to change.  
> >
> > Both of your problems have no [MSVC] solution right now.
> >
> > In case of 128-bit integer, there is a chance that MSVC will support
> > it in the future.
> >
> > In case of 80-bit long double, there is no chance.  If MSVC ever
> > supports binary floating point wider than 64-bit on x86-64 platform
> > then it would be IEEE binary128 implemented in software.  But even
> > then they would not use name 'long double' for a new type, because
> > it would break existing programs.  
> 
> Thank you, this is helpful.
> 
> > But if all you want is the program running on Windows, then the
> > solution is easy - use different compiler.
> > MSYS2 is just couple of clicks (and ~0.8 GB :( ) away.
> > After you have msys2 installed do
> > pacman -Sy
> > pacman mingw-w64-ucrt-x86_64-gcc
> >
> > Several hundreds of MB more and you have gcc14
> > Possible, I'd have to install make separately, i.e.
> > pacman make.  
> 
> Do I understand this right, that msys2 is to be installed
> on Windows?  And that the pacman commands are to be run
> within msys2 on the MS Windows system?

Yes and yes.
pacman has to be run from msys2 terminal window (bash).