Re: Screensaver won't run on 10.6 even after porting to 64-bit
Re: Screensaver won't run on 10.6 even after porting to 64-bit
- Subject: Re: Screensaver won't run on 10.6 even after porting to 64-bit
- From: Ben Haller <email@hidden>
- Date: Sun, 11 Oct 2009 15:44:34 -0400
On 11-Oct-09, at 3:28 PM, Clark Cox wrote:
On Sun, Oct 11, 2009 at 12:23 PM, Dave Keck <email@hidden>
wrote:
So I guess System Preferences doesn't like my garbage collection
setting
(which is set to "Unsupported"). Do I really need to turn GC on
to get my
screensaver to work?
Yes, your screensaver must be GC-supported to support Snow Leopard.
This bit me recently too - I wasn't expecting it either. So much for
GC making our lives easier, eh? :)
On the bright side, you can make your bundle GC-supported, which
means
it contains both retain/release and GC logic. This will at least buy
you 10.5 & 10.6 support in the same bundle, but I imagine you'll have
to compile a separate GC-unsupported version for 10.4, but I'm really
not sure. Hopefully someone else could comment on that.
You can use per-arch build settings to make the ppc and i386 parts
GC-unsupported, but make the x86_64 part GC-required; there's no need
to build separate bundles.
OK, makes sense. My only question: what's the best way to switch
at compile time based on whether GC is enabled for the build? I.e.
what do I #if or #ifdef? I could do it based on the arch or the SDK,
but if there's a flag specifically for GC I'd rather use that...
Thanks!
Ben Haller
Stick Software
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