macOS Help with linker Error in Xcode4

[GorillaPaws]

I'm getting several linker errors in the implementation of my AppController class. It's not finding any of the Core Animation classes or constants with several Apple Mach-O Linker errors such as:
"_kCAEmitterLayerAdditive", referenced from:"

I've cleaned and rebuilt to no effect. I also have kept all of my Developer files in their default locations to my knowledge. Also, when I run Apple's sample code using Core Animation, it builds fine.

In the AppController.h file I'm including at the top:

#import <QuartzCore/CoreAnimation.h>

just like with the sample code. Any suggestions for how to debug this? Any general suggestions for debugging linking issues (this is an area that I'm not very knowledgeable)?

Thanks.

 

[GorillaPaws]

I'm an idiot, I forgot to add the framework to my project.