[Qt-interest] Qt on 64-bit Windows

[Yves Bailly]

Josh a écrit :
> On Sun, 27 Jun 2010, Thiago Macieira wrote:
>>> 2) Can anyone comment on any speed differences (in the compiled code) from
>>> using MSVC and MinGW (preferably with 64-bit, but info about 32-bit would
>>> be helpful too)?
>> MSVC produces much better code.
> 
> I guess that settles it. Thanks!

On a related note, just as we can build both debug and release flavors, it
would be really nice if it was possible to build 32bits and 64bits flavors
in a single pass (whichever platform used, though I'm mainly on Win7/64 for
now).

A value in CONFIG allowing to know in the .pro file if we're dealing with
32bits or 64bits would be very (very) usefull.

About the MinGW64 story...
1) it seems to be getting quite usable, so maybe a bit of care about it
   would not harm;
2) correct me if I'm wrong, but Qt supported GNU/Linux long before it
   became anything close to "official" on less than 1% of computers;
3) using it from time to time would allow to fix a few nasty quircks here
   and there, such as storing a pointer in an "unsigned long" (found in
   WebKit, don't remember exactly, but I can have a look again if needed);
   use a "size_t" if you need an integer type to contain a pointer, at
   least it will always be of the correct size.

Regards,

-- 
      /- Yves Bailly - Software developper  -\
      \- Sescoi R&D  - http://www.sescoi.fr -/
"The possible is done. The impossible is being done. For miracles,
thanks to allow a little delay."