Oh, and a follow-up question - is anybody able to confirm that Lion + Xcode 4-for-Lion will definitely be able to open (and hopefully edit) .xib files created using Xcode 5 or 6? That way I can know if there's any point in splashing out a whole £14 to upgrade that macbook to Lion...
On 30 Oct 2014, at 15:09, Jonathan Taylor <
email@hidden> wrote:
> Hi all,
>
> I'm doing most of my development work on modern versions of OS X and Xcode, but it would be very nice to maintain backward compatibility to Snow Leopard in order to maintain compatibility with legacy peripheral equipment (video cameras) that are a bit fussy about which hardware they connect to - we have a number of old macbooks that we know are happy talking to the cameras, but they are stuck on Snow Leopard (don't think we have the necessary install disks to upgrade to Lion).
>
> Thus I have:
> Ongoing development on Xcode 5 + OS 10.8
> Desire to build a binary that is back-compatible to OS 10.6
> As a bonus, it would be nice
to be able to build and debug the same source code on OS 10.6, though that is less important.
>
> If I just build the binary and try and run it on 10.6, it launches and broadly works ok, but I am seeing some notifications etc never being dispatched. I haven't investigated further because frankly I'm amazed it launched at all. I am assuming that as a bare minimum I should be building (on 10.8) against the appropriate SDK for 10.6. Can somebody advise on how I should do that (and whether there is anything else I should be doing?)
>
> In terms of actually building direct on 10.6, the immediate obstacle is that Xcode 3 doesn't recognise the upgraded .xib format and so I hit compile-time errors. I suspect that I would need to upgrade the OS on the macbook in order to install Xcode 4(*), and that seems to be a non-starter since I don't think we have the appropriate install disks.
>
> (*) Googling suggests there's an anomaly where Xcode 4 for snow leopard (specifically) is only available with a *paid* developer account...
>
>
> So in conclusion - I appreciate that I am fighting against the current in trying to maintain this level of back-compatibility, but if anybody could offer any advice at all about how to keep it going for a little bit longer, that would be very helpful.
>
> Cheers
> Jonny
>
>
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