On Apr 23, 2012, at 5:16 PM, Stephen Chu wrote: > 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.
Gack. I got Qt 4.8 and Qt 5 confused in my last post. As you say, Qt 4.8 should build in 32 bit mode without a problem. I think Tier 2 support means best try but not officially supported. So I would say that if compiling Qt 5 in 32 bit mode actually works great. If it does not then qt-project is not going to put time into fixing it. Sorry for the confusion. MJ. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
