Re: Re: 10.6 SDK for Xcode 4.4?
Re: Re: 10.6 SDK for Xcode 4.4?
- Subject: Re: Re: 10.6 SDK for Xcode 4.4?
- From: Marc Respass <email@hidden>
- Date: Thu, 26 Jul 2012 14:55:39 -0400
> On Jul 25, 2012, at 11:28 PM, Jeff Johnson wrote:
>
> > On Jul 25, 2012, at 3:40 PM, Chris Hanson wrote:
> >
> >> On Jul 25, 2012, at 10:43 AM, Marc Respass <email@hidden> wrote:
> >>
> >>> I updated to Xcode 4.4 and lost the Mac OS X 10.6 SDK. I copied it from a backup of Xcode 4.3
> >>
> >> Modifying Xcode like this isn’t supported; you should virtually always set your Base SDK to the “Latest” option, and use the Deployment Target to specify the earliest operating system on which your code will run.
> >>
> >> -- Chris
> >
> > This is the really frustrating thing. There is no supported way to use the same SDK to build on both OS X 10.6 and 10.8. Xcode 4.2 is the highest supported version on OS X 10.6, but it doesn't have the 10.7 SDK. Xcode 4.4 is the lowest supported version on OS X 10.8, but it doesn't have the 10.6 SDK.
> >
> > We have apps that still support 10.6. Until today, when 10.8 became the latest released OS, we supported only the latest OS (10.7) and the previous version (10.6), which is a very common practice for developers. We will eventually drop 10.6 support, but it isn't going to happen overnight. We need a way to handle 10.6, 10.7, and 10.8 simultaneously, and Xcode fails us here. We can't truly support an app on an OS version without being able to build and debug the app on that OS, so deployment target is not sufficient. And using different SDKs on different OS versions is not a good option, because the shipping version of the app can only use one of the SDKs, and Apple's frameworks can behave very differently depending on the SDK you compile against.
>
> Is building the application on Mac OS X 10.6 with Xcode 3.x and the 10.6 SDK not a viable option for you?
>
It is not. I develop on 10.7 (soon 10.8). I just need the 10.6 SDK. Going back to Xcode 3 is right out! Xcode keeps getting better, I am not going back.
I appreciate everyone's response. Copying the SDK is not officially supported but it is a simple, working solution to the problem until Apple decides to help us continue to support older versions of the OS. I also have to use the LLVM-GCC 4.2 compiler with the 10.6 SDK.
I did file a Radar. I feel that I have done all that I can and I have a working solution. Hopefully, Apple will help us support older OS releases.
Thanks again
Marc
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