[Interest] OSX 10.6.* + Qt4.8.1 Problem

[Stephen Chu]

On 6/7/12 4:23 PM, Till Oliver Knoll wrote:
> Am 07.06.2012 um 14:06 schrieb "Alexander Carôt" <alexander_carot at gmx.net>:
>
>> ...
>>
>> ld: warning: in /Users/soulalex/QtSDK2/Desktop/Qt/4.8.1/gcc/lib/QtScript.framework/QtScript, file was built for unsupported file format which is not the architecture being linked (i386) --- and then it spreads tons of errors due to the wrong file format (it says Qt was built for "unsupported")
>
> Qt is "unsupported" in the sense that it does not support the architecture you are currently trying to build and link. And from your error description I understand that you are trying to build and link /your/ application in 32bit mode! Which in fact is /not/ supported anymore by the precompiled Mac Cocoa Qt which since some recent version (4.8? 4.7.x) comes /only/ in 64bit architecture.
>
> You probably used to link against some older (4.6? Some early 4.7?) Qt version which /did/ come in both 32 and 64bit flavours (there is a command line tool of which I always forget the name - file? - which shows you the architectures a given binary supports). I know this for sure because in my qmake script I used to strip away the 32bit part of all Qt libraries and plugins - this part has become superfluous (and in fact did raise an error), as Qt now ships in 64bit /only/.
>
> Note that gcc with the latest XCode on 10.6.8 does produce 64bit binaries by default. Which is also the recommended thing (it /does/ give you a few extra registers on the CPU and hence slightly more performant code).
>
> So in your qmake project file make sure to exclude the i384 build option (or not to include it - as I said, default should be 64bit only anyway).
>
> However if you /really/ want to (also) support 32bit CPUs, you now need to compile Qt yourself with the appropriate build flags.
>
> Cheers, Oliver

Mac OS X 10.6 32-bit is a supported platform. It's a tier 2 platform but 
supported nonetheless.


http://qt-project.org/doc/qt-4.8/supported-platforms.html#tier-2-platforms