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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