On 4/23/12 5:11 PM, Michael Jackson wrote: > > On Apr 23, 2012, at 4:57 PM, Stephen Chu wrote: > >> On 4/23/12 4:49 PM, Michael Jackson wrote: >>> I am going to do this from memory but www.apple.com is going to be the >>> source for the exact answer. >>> >>> OS X 10.5 was both PPC and Intel and 32 and 64 bit (Kinda/ sort of). >>> >>> You could install OS X 10.5 on 32/64 bit PPC and some Intel machines. Apple >>> did early on use the Intel Core Duo and Core Solo which are 32 bit >>> processors. So there are some intel machines that can run OS X 10.5 (even >>> 10.4.11) but only in 32 bit mode. >>> >>> OS X 10.6& 10.7 Requirements: >>> http://support.apple.com/kb/HT4949 >>> >>> OS X 10.5 Requirements: >>> http://support.apple.com/kb/HT3759 >>> >>> The question you need to ask yourself is how many of your customers are >>> still using OS X 10.5? If you have a relatively "new" app I would ditch 32 >>> bit support and just go with 64 bit support from here on out. If you have >>> some sort of custom app for an internal IT department or something special >>> where you need to support back to OS X 10.5 I would just stick with Qt >>> 4.7.4 which should have support for building all the way back to 10.5 with >>> Cocoa or Carbon. >>> >> >> We definitely have to support 10.6 and that means some of the customer may >> have 32-bit machines. And in my industry, it's really common to have older >> Macs running our software. They don't update very frequently, if at all. >> >> We just finally got rid of PPC support this year. :( > > I would stick with Qt 4.7.4 for exactly that purpose. Is there something > super-special that you MUST have in Qt 4.8 for your application? If you have > machines that old then you are going to be "stuck" with Qt 4.7.x until those > machines can get upgraded. From the writing on the wall it looks like 32 bit > support is being or should be dumped by Qt for OS X. Apple certainly dumped > it when OS X 10.7 came out. > > If Qt 5 is supposed to run on ALL OS X 10.6 machines then there is a bug in > that Qt 5 will NOT build in 32 bit mode. > > MJ.
Actually Qt 4.8 is not a problem. I have it built in 32-bit already. It's Qt 5 I am having trouble with. It's mentioned somewhere on Qt 5 supported platforms that 10.6 will be 2nd tier platform. I suppose it means 32-bit should be supported, hence the bug report. There's some nice additions like V8 JS engine and JSON support in Qt 5 that I am interested in. Not terribly hard to replace in 4.8. But I'd like to keep up since this project eventually have to be updated. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
