Re: Launching 10.5 app on 10.4
Re: Launching 10.5 app on 10.4
- Subject: Re: Launching 10.5 app on 10.4
- From: Nick Zitzmann <email@hidden>
- Date: Tue, 18 Oct 2011 13:33:45 -0600
On Oct 18, 2011, at 12:37 PM, email@hidden wrote:
> What is the canonical method of alerting a user that an application is built for a newer version of OSX?
You need to set the LSMinimumSystemVersion or LSMinimumSystemVersionByArchitecture keys in your application's info.plist file. The former will block the app from running on any older version of the OS[1]. The latter is used to prevent certain architectures from being launched under certain versions of the OS, and is typically used to lock the 64-bit version of any app from running under Leopard[2].
If the key is set, and a user tries to run it under an unsupported OS, then they'll get an error message saying the app requires a newer OS version, except under Panther, where the error message won't appear due to a bug that was fixed in Tiger.
[1] except under Cheetah and Puma, where the key-value is ignored, but nobody uses Cheetah or Puma anymore
[2] since Leopard's 64-bit frameworks were very immature
Nick Zitzmann
<http://www.chronosnet.com/>
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