Re: levels of Windows support

[Bruno Haible]

Hi Eli and Paul,

I'm trying to understand whether the #ifs you are adding for Emacs could
be generalized for gnulib users other than Emacs.

On one hand, Eli writes:
> Emacs dropped MSVC support a few years ago.  Only MinGW, with its 2
> flavors, is currently supported, in addition to Cygwin.

On the other hand, Paul commits patches that disable mingw AND MSVC support,
presumably for functions that are implemented in Emacs' w32.c.

Would a gnulib-wide option "ignore mingw and MSVC portability" be useful for
Emacs? Is it something that we should offer as a documented feature?

Would a gnulib-wide option "ignore MSVC portability" be useful for Emacs?
Is it something that we should offer as a documented feature?
(I would see it as quite arbitrary: it is like supporting GCC but not SUNWspro
cc on Solaris.)

If the answer to both questions is "no", then OK, the best approach then is to
continue with "#ifndef EMACS_CONFIGURATION" here and there.

Bruno