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From: Michael S <already5chosen@yahoo.com>
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Subject: Re: is Vax addressing sane today
Date: Sun, 29 Sep 2024 13:55:11 +0300
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On Sat, 28 Sep 2024 23:59:23 -0700
Tim Rentsch <tr.17687@z991.linuxsc.com> wrote:

> EricP <ThatWouldBeTelling@thevillage.com> writes:
> 
> > Lawrence D'Oliveiro wrote:
> >  
> >> On Thu, 26 Sep 2024 13:13:02 -0400, EricP wrote:
> >>  
> >>> I've always paid for mine.  My first C compiler came with the
> >>> WinNT 3.5 beta in 1992 for $99 and came with the development kit,
> >>> editor, source code debugger, tools, documentation.
> >>> A few hundred bucks is not going to hurt my business.  
> >>
> >> Given that GCC offers more features and generates better code than
> >> MSVC, the money may not matter to your business, but the quality of
> >> the product will.  
> >
> > GCC is a compiler collection not a integrated development kit for
> > Windows. I have no knowledge of what state GCC was in in 1992 but
> > it likely did not support the MS enhancements for Win32 programming:
> > structured exception handling, various ABI's, inline assembler,
> > defined behavior for some of C's undefined behavior,
> > later first-class-type support for 64-bit signed and unsigned
> > integers, and most important:  integration with the GUI source code
> > debugger.
> >
> > Plus come with necessary API headers, various link libraries and
> > DLL's, supporting applications, documentation.
> > You know... what a product looks like.  
> 
> 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.


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.