Thanks a lot, Greg! The reordering workaround makes me feel funny inside, but it does appear to work.
<rdar://problem/8363909> has been filed. -Sidney On Tue, Aug 24, 2010 at 2:51 AM, Greg Parker <gpar...@apple.com> wrote: > On Aug 23, 2010, at 12:46 PM, Greg Parker wrote: >> On Aug 23, 2010, at 12:20 PM, Sidney San Martín wrote: >>> I'm developing for 10.4.11 and up, using -respondsToSelector: and >>> NSClassFromString() to target different OSs at runtime, and it's gone >>> super-smoothly so far. >>> >>> I just ran into an issue I can't figure out on my own. When I link to >>> the System Configuration framework and IOKit, and target 10.4, calling >>> some SystemConfiguration framework functions crashes my application >>> with "Symbol not found: _SCDynamicStoreCreate". >>> >>> This happens if I use any base SDK newer than 10.4, which is a bad >>> thing for this project. >> >> This looks like a bug in the SDKs. I don't see the appropriate magic symbols >> that tell the linker the OS version when the function moved from IOKit to >> SystemConfiguration. You should file a bug report. >> >> You can use dlsym() to work around the problem. > > You can also be able to work around this by fiddling with the framework link > order in your build. The problem is that you want the symbol from > SystemConfiguration, but instead you're getting the symbol from IOKit. This > dies on 10.4 because the symbol was not in IOKit then. If you can modify the > link order so that SystemConfiguration comes before IOKit in the linker > command, then the linker should choose the symbol from SystemConfiguration. > > To do this in Xcode: > 1. Find your app in the Targets list on the left side of the project window. > 2. Open the Link Binary With Libraries build phase. > 3. Drag SystemConfiguration.framework to the top of the list. > > > -- > Greg Parker Runtime Wrangler > > > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
