Re: libmsvcrt.a and _create_locale in win7

On 05/06/19 08:43, Andrei Voronin wrote:
> There is an issue that I hit a few days ago. Unfotuanally osdn.net
> can't register new accounts right now.

In what way is it failing?  I can access the account creation form, and
complete it, but I didn't go as far as submitting it, (because I don't
really want a second OSDN.net account).

> The thing is the libmsvcrt.a points on msvcrt.dll and suppose that in
> there is a declaration (definition?) of _create_locale function. In
> win10 this statement is correct, but in win7 (Microsoft Windows [Version
> 6.1.7601] in my case) the declaration is in msvcr120_clr0400.dll.

MSVCR120_CLR400.DLL is a component of Microsoft's Common Language
Runtime, (part of the .NET framework).  I don't know to what extent it
may be a viable replacement for MSVCRT.DLL; I suspect not at all.

> I found some config file for preprocessor where msvcrt.dll functions
> restricted by a version of the Windows 
> https://osdn.net/projects/mingw/scm/git/mingw-org-wsl/blobs/5.2-trunk/mingwrt/msvcrt-xref/msvcrt.def.in 
> but I don't understand all build workflow.

That's the common source for the MSVCRT.DLL, and its various non-free
MSVCRxxx.DLL counterpart, import library definition files; it is also a
component of the source for the msvcrt-xref.pdf document, which cross
references symbol availability in each of these import libraries, (up to
MSVCRT.DLL on Win7, and non-free to MSVCR120.DLL).

> I really hope that is a fixable problem. 

It may be fixable, but not as readily as you might like.  You most
definitely must _not_ link with both MSVCRT.DLL and any version of the
CLR, in any one application; (indeed, as noted above, you may not be
able to use the CLR with MinGW, in any way).  A viable solution, for
you, may be to _substitute_ MSVCR120.DLL for MSVCRT.DLL — you must not
attempt to link any one application with both — but that implies:–

  1) Acceptance of a dependency on a non-free runtime library, which
     you must obtain for yourself, and which you may not be authorized
     to redistribute, unless you have a paid-for MSVC licence.

  2) Modification of your MinGW installation, by way of a customized
     GCC specs file, to exclude MSVCRT.DLL from the link, replacing
     all MSVCRT.DLL references with MSVCR120.DLL, as described in my
     comment on http://www.mingw.org/wiki/SpecsFileHOWTO (an article
     which would benefit from a comprehensive overhaul).

-- 
Regards,
Keith.

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