<![CDATA[Qt Mac and 32 bit application]]>Hi. I have to use a video capture device on Mac. The device vendor says that, in order to use this device. I have to run my application in 32bit mode. What exactly means? This is what the vendor has said to me:

The VideoGlide driver uses QuickTime. Because it does, the host
application must run in 32-bit mode. If you can run your app, or any other
app in 32-bit mode, the drover will likely work.

]]>https://forum.qt.io/topic/33406/qt-mac-and-32-bit-applicationRSS for NodeTue, 04 Aug 2026 14:01:41 GMTWed, 23 Oct 2013 08:11:29 GMT60<![CDATA[Reply to Qt Mac and 32 bit application on Sun, 27 Oct 2013 11:36:46 GMT]]>Thank for all advices. I have installed the "Command Line Tools" as you have written but does not work. I can't produce a 32 bit application with Xcode too.
I have written many posts in the apple developer forum without any good reply.

I'm a beginner on develop applications for Mac but I think the Mac video capture framework is very bad.

Is not possible to spend a very lot of time on buying video capture devices, trying many software as Vlc, QuickTime or framework as QCamera or OpenCV and discover that, the video capture devices normally work only with their own software or use 32 bit drivers.

Do you know a usb video capture device that works on Mac and with QCamera, OpenCV and QuickTime or Vlc?

]]>https://forum.qt.io/post/200432https://forum.qt.io/post/200432Sun, 27 Oct 2013 11:36:46 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Sat, 26 Oct 2013 06:15:05 GMT]]>It may well be that Apple decided to trop 32 compilation support in Mavericks, I don't know (but I have not heard it said anywhere).

You need to go to Xcode->Preferences->Downloads, then install "Command Line Tools".

]]>https://forum.qt.io/post/200419https://forum.qt.io/post/200419Sat, 26 Oct 2013 06:15:05 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Fri, 25 Oct 2013 20:34:51 GMT]]>Thanks again for your reply.
Now I obtain the error "not supported platform". I think I have to download something for Xcode but I don't know what...

]]>https://forum.qt.io/post/200415https://forum.qt.io/post/200415Fri, 25 Oct 2013 20:34:51 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Fri, 25 Oct 2013 18:27:41 GMT]]>See "this":https://qt-project.org/forums/viewthread/22926, maybe it will help.

]]>https://forum.qt.io/post/200409https://forum.qt.io/post/200409Fri, 25 Oct 2013 18:27:41 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Fri, 25 Oct 2013 18:21:03 GMT]]>I'm trying to compile Qt from source on Mac.
I have tried these rows:

./configure -platform macx-g++42 -arch x86
./configure -platform macx-g++ -arch x86
./configure -arch i386

but always I obtain:

Build types: macx-g++ (x86_64, ...

Where is the error?

]]>https://forum.qt.io/post/200408https://forum.qt.io/post/200408Fri, 25 Oct 2013 18:21:03 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Thu, 24 Oct 2013 06:22:52 GMT]]>You need to compile yourself. See "this":http://qt-project.org/wiki/Building_Qt_5_from_Git. You don't need to use git, you can download the tarball from the Downloads page. I just find the guide very useful in compiling Qt :)

]]>https://forum.qt.io/post/200273https://forum.qt.io/post/200273Thu, 24 Oct 2013 06:22:52 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Wed, 23 Oct 2013 19:10:35 GMT]]>Ok, thanks.
Can I download Qt5 x86 for Mac or have I to compile it myself?

]]>https://forum.qt.io/post/200225https://forum.qt.io/post/200225Wed, 23 Oct 2013 19:10:35 GMT<![CDATA[Reply to Qt Mac and 32 bit application on Wed, 23 Oct 2013 08:53:33 GMT]]>By default, Mac binaries are compiled in 64 bit. But you can still compile them in 32 bit mode (-arch x86 or -arch m32), and then they will work with your driver.

]]>https://forum.qt.io/post/200136https://forum.qt.io/post/200136Wed, 23 Oct 2013 08:53:33 GMT