Mach-O Linker reference error, but can't find the source file

I'm trying to add facebook connect login to my phonegap/cordova app using the https://github.com/mgcrea/cordova-facebook-connect plugin.

When I go to build the app, I get an error

Apple Mach-O Linker Error
"_OBJC_CLASS_$_Facebook", referenced from:
     objc-class-ref in FacebookConnect.o
     (maybe you meant: _OBJC_CLASS_$_FacebookConnect)
ld: symbol(s) not found for architecture armv7
clang: error: linker caommand failed with exit code 1 (user -v to see invocation)

I've been going through my files, and don't have any file called FacebookConnet.o, just FacebookConnect.h and FacebookConnect.m in my plugins directory, and a Facebook.h within the FacebookSDK.framework.

-Plugins
   FacebookConnect.h
   FacebookConnect.m
   -FacebookSDK.framework
       -headers
          Facebook.h
          FacebookSDK.h
          etc, etc, etc

Is the .o file created during the build, and if so, hwo can I find where this error might be so I can try to fix it? Or any other suggestions on resolving this?

Solution

Go to your Facebook.h, show Utilities (right tab), and click on File Inspector.

Is your project in Target Membership checked? If not, make sure it's checked and try again.