[Openmcl-devel] Determining OSX version at runtime

Raffael Cavallaro raffaelcavallaro at mac.com
Thu Aug 26 16:12:36 UTC 2010

On Aug 26, 2010, at 11:51 AM, Neil Baylis wrote:

> What's the correct way to determine the OSX version at runtime?
> Specifically, how do I make the behavior change if it's 10.6 or later?

I use this hack to distinguish between 10.5 and 10.6, since mainQueue is only available 10.6 or later according to Apple's docs:

? (defun snow-leopard-or-later-p ()
    (#/respondsToSelector: ns:ns-operation-queue (objc::@selector "mainQueue")))
? (snow-leopard-or-later-p)

warmest regards,


Raffael Cavallaro
raffaelcavallaro at me.com

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