[Development] Qt 5.9

[Thiago Macieira]

On quarta-feira, 23 de novembro de 2016 02:06:14 PST Jake Petroules wrote:
> > If we still have time, I'd like to see MinGW 64-bit for 5.8, so we can
> > drop
> > the 32-bit binary build in time for 5.9.
> > 
> > Otherwise, if we have to wait for 5.9 to bring MinGW 64-bit, then we can't
> > drop 32-bit until 5.10.
> 
> Agreed. We should also consider dropping 32-bit MSVC since we've had both
> for a while and we only support Windows 7 and above now, which should mean
> adoption is good enough to do so.

Good point. Considering that MSVC 2017 is coming (RC is already out), I'd also 
be prepared to have it available for 5.9, so I propose:

5.7 (for comparison, no  change):
                32-bit      64-bit
MSVC 2013          Y           Y
MSVC 2015          Y           Y
MSVC 2017          N           N
MinGW              Y           N
(5 packages)

5.8:
                32-bit      64-bit
MSVC 2013          Y           Y
MSVC 2015          N           Y
MSVC 2017          N           N
MinGW              Y           Y
(5 packages)

5.9:
                32-bit      64-bit
MSVC 2013          N           Y
MSVC 2015          N           Y
MSVC 2017          N           Y
MinGW              N           Y
(4 packages)

This also allows us to pick one compiler to provide 32-bit support with if we 
need to. I just think it's time to let it die and get people who need it to 
compile from source.

There are no current Intel 32-bit only CPUs that regular Windows runs on, only 
legacy. I don't know AMD's product line, but I'd be surprised if it is 
different.

Intel does have new 32-bit only SoCs like [1], but whether Windows 10 IoT Core 
will run on them, I don't know. Even if it does, I doubt users will use our 
desktop binaries.

[1] http://ark.intel.com/products/79084/Intel-Quark-SoC-X1000-16K-Cache-400-MHz

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center