On Apr 24, 2012, at 6:38 PM, ext Thiago Macieira wrote: On terça-feira, 24 de abril de 2012 11.41.14, Stephen Chu wrote: So I grabbed Qt 5 from git to give it a shot again. I am now more confused then before. :)
The configure script uses pre-processor output from qtbase/config.tets/arch/arch.cpp to determine the host and target architectures (around line 3707). I assume this is to setup compiler flags for various features (SSE2, etc). It then check the architecture that qmake is built in and adds it to QT_CONFIG (line 4968). This makes the built libs in the same architecture as qmake. I guess I need to make/hack/trick the 2 the same to have a chance to make it work? The former is using i386 while the later wants x86. So I can't just copy them. I don't think I am capable of coming up with a elegant solution. The only way I can do it is to just hard code the architectures into the configure script and hope for the best. :( I think this discussion should be moved to developm...@qt-project.org<mailto:developm...@qt-project.org>. Cross- posting now. Please drop interest@qt-project.org<mailto:interest@qt-project.org> when replying. Like we've said before, you need to make the compiler flags such that it produces a non-universal build of one single architecture: x86. Then the arch- detection should work correctly. Unless you're saying that the arch-detection is broken. Well, it is in one way, I'm fixing it, but I don't think it's related to your problem. Disregarding Thiago and cross-posting (sorry!) Yes, Qt 5.0 will support 32-bit builds. We'll have to figure out _how_. I'm not a big fan of multiple mkspecs so I'm going to suggest a configure option of some sort. Perhaps we can re-use "-device-option" from http://labs.qt.nokia.com/2012/04/13/cross-compiling-qt-for-the-masses/ . The only reason for supporting 32-bit builds is as far as I can see the need to integrate with other 32-bit software. This is a very good and sufficient reason. Qt 5 requires Mac OS 10.6 minimum, which requires a 64-bit capable CPU (Core 2 Duo). Universal binary support is not needed since you can reach all of the supported install base with a single 32 or 64 bit executable. - Morten
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