Re: problem with unistd.h on mingw systems

[Eric Blake]

On 01/17/2013 02:38 PM, Paul Eggert wrote:
> On 01/17/13 13:27, John W. Eaton wrote:
>>
>> Do you expect this to continue to work for older versions of mingw?
> 
> No, that hasn't been the practice in the past.  I pushed the following
> to the doc to make it clearer:
> 
> ---
>  doc/gnulib-intro.texi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/doc/gnulib-intro.texi b/doc/gnulib-intro.texi
> index 7b3ff8a..69d6e08 100644
> --- a/doc/gnulib-intro.texi
> +++ b/doc/gnulib-intro.texi
> @@ -143,6 +143,7 @@ unsupported on mingw: @code{mgetgroups}, 
> @code{getugroups}, @code{idcache},
>  @code{pt_chown}, @code{grantpt}, @code{pty}, @code{savewd},
>  @code{mkancesdirs}, @code{mkdir-p}, @code{euidaccess}, @code{faccessat}.
>  The versions of Windows that are supported are Windows XP and newer.
> +Only the latest version of mingw is tested; older versions are not supported.

There are two flavors of mingw; mingw32 (32-bit only) and mingw64 (both
32- and 64-bit support), with slightly different release schedules.
Fedora used to ship mingw32; but as of Fedora 17, ships only mingw64
(but both bit-widths).  Meanwhile, cygwin ships cross-compilers for both
flavors, but tends to lag behind when upstream mingw releases are made.
 All of my mingw testing has been via cross-compilation under Cygwin or
Fedora, rather than either upstream mingw proper, so stating that we
support _only_ the latest mingw may be a bit too strong or
oversimplified.  If someone wants to provide a mingw patch for a
currently shipping mingw cross-compilation environment (even if it is
not the latest upstream mingw), I'm sure we can accommodate that.  On
the other hand, I don't have any heartburn with this wording; after all,
we only fix problems if they get reported, and most people reporting
mingw problems are using relatively new builds.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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