qt4-mac and qt4-mac-devel
ctreleaven at cogeco.ca
Sun Jun 17 13:05:25 PDT 2012
At 3:17 PM -0400 6/17/12, Michael Dickens wrote:
>On Jun 17, 2012, at 11:41 AM, Craig Treleaven wrote:
>> From the Qt4-mac portfile, it appears that OS X 10.4 through 10.7
>>are supported on the various combinations of PPC, i386, x86_64 in
>>32 and 64 bit modes, as appropriate. (So the minimum would be PPC
>>32 bit if anyone was patient enough to build there?)
>Yes, at least in theory. The oldest I know of currently is 10.5 PPC
>32-bit. There is legacy code in the Portfile that might allow it to
>work with 10.4, but I do not have a way to test this and also have heard
>nothing from that group of users (assuming there are any out there) as
>to whether this updated port works for them.
>I do know that 10.5 PPC 32-bit takes "a day" to compile. On my 2.6 GHz
>Core-2 64-bit, and no special variants, I can get the compile time down
>to "only" 1.5 hours. The compile is highly parallelizable, so in theory
>an 8-core modern Intel processor could do this compile in maybe 30-45
>minute. Compile time doubles with +debug, and also with +universal --
>so a +debug+universal will take my computer around 7 hours.
>> Are there any major gotchas with, say 10.5 on 32 bit Intel?
>We fixed a bug last week that seems to allow qt4-mac 4.8.2 to work on
>32-bit Intel and PPC under 10.5 (and, newer, for x86). As far as I
>know, this latest Qt works just fine on 10.5 PPC or x86 32-bit. I've
>tested this release on 64-bit Intel 10.6 and 10.7. I'm in the process
>of fixing an issue with ccache, but that won't effect Qt runtime.
>> Is there any word on Mountain Lion support with 4.8.2? Just works?
>Hopefully it "just works", but I won't know until I get access to 10.8
>or Qt publishes something (which they might have already, and I just
>haven't seen it). I've read nothing online about Qt and 10.8, but then
>I haven't been actively looking either.
>Hope this helps! - MLD
Thanks, Michael, that does help. One of the to do's on my MythTV
port is to try to figure out a reasonable OS X minimum deployment
target. If Qt didn't offer decent support for 10.5, there'd be no
reason to consider it. Since it does, I should see what I can do.
Practically speaking, with 10.8 so close, the n-2 argument may be
BTW, as another data point on build times, I've built qt4-mac +mysql
(and all dependencies) on both an older Core2Duo 1.83 GHz and a quad
core 2 GHz i7: ~3.5 hours for the former and just less than 1 hour
for the latter. That's pretty brutal about the universal build
doubling the time!!
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