Hello Paul!

On Fri, Aug 31, 2012 at 9:28 AM, Pau Garcia i Quiles
<[email protected]> wrote:
> Hi,
>
> Qt Project is again trying to decide on what gcc to use on Windows. If
> someone could drop by [email protected] and give more insight
> (like: SEH vs Dwarf2 builds, std::thread, make -j support, etc), it'd
> be great.

I would like to see something like 4.7.1 / 4.7.0 to get support for as much
of the new c++11 standard as we can, including std::thread.

My personal preference would be to go for 64 bits, although lowest common
denominator would argue for sticking to 32 bits.

There is a memory-exhausted issue with building recent versions of Qt with
recent versions of mingw-w64.  I don't know whose "fault" it is -- my guess
is that there is an inefficiency in mingw-w64 that is triggered by the large
size of Qt.  I've been able to work around it, but it is a nuisance.

Also, I've had a problem with recent versions of mingw-w64 gdb.  It's slow
as molasses loading up and/or initializing an application (minutes), but
once the application starts, it seems to be fine. (I don't think that this is
Qt specific.)

Obviously, you need a stable enough and good enough version of gcc to
get Qt built, but in general my preference would be for you to push up
close to the mingw-w64 bleeding edge.  Getting Qt built is a good test
for the compiler, so you'd be helping the mingw-w64 project.

Thanks for everyone's work on these tools.


K. Frank

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