Default mingw _WIN32_WINNT

Corinna Vinschen
Tue May 5 10:11:18 GMT 2020

On May  5 10:06, JonY via Cygwin wrote:
> On 5/5/20 9:05 AM, Rainer Emrich wrote:
> > Hi Corinna,
> > 
> > Am 05.05.2020 um 10:54 schrieb Corinna Vinschen:
> >> Therefore it might be a good idea to bump the default for these
> >> Cygwin-related headers to at least 0x0600.
> >>
> >> Setting them to 0x0602 sounds like a good idea, but as long as we didn't
> >> drop Vista or W7 support it might be premature.
> >>
> >> Btw., checking Cygwin sources for Vista and W7-specific code, it turned
> >> out that actually very few lines of code handle Vista or W7-specific
> >> workarounds.  The advantage of removing the code is pretty minor, so I
> >> didn't push the changes.  While it's a bad idea to keep Vista and W7
> >> running (at least attached to the internet), we can support them a while
> >> longer.
> > I would expect support for Windows 7 as long as the Micsrosoft ESU
> > program is active.
> > 
> By right, applications needing newer APIs should be setting them instead
> of relying on the defaults. In this case, Cygwin compiled with
> -D_WIN32_WINNT=0x602 if needed.

It's not about compiling Cygwin itself (which sets _WIN32_WINNT to
0x0a00 anyway), it's about compiling executables *for* Cygwin.  Given
they won't run under pre-0x0600 anyway, it may be a good thing if the
win32 headers for Cygwin executables define the minimum possible as


Corinna Vinschen
Cygwin Maintainer

More information about the Cygwin mailing list