Reachability duplicate symbol

Error on link: ``` ld: duplicate symbol _OBJC_METACLASS_$_Reachability in /Users/jmf/Documents/iOS Development/jmf_Client/jmf/jmf/ww_libs/libmfcbroem_ios.a(Reachability.o) and /Users/tpf/Library/Developer/Xcode/DerivedData/jmf-erlknghfcpoomnfanzovahfacgpv/Build/Intermediates/jmf.build/Debug-iphoneos/jmf.build/Objects-normal/armv7/Reachability.o for architecture armv7 ``` If I simply remove the h/m files (and associated import directives) in hopes of just using the Reachability in libmfcbroem_ios.a...the linker throws this: ``` Undefined symbols for architecture armv7: "_kReachabilityChangedNotification", referenced from: -[MKNetworkEngine initWithHostName:customHeaderFields:] in MKNetworkEngine.o -[MKNetworkEngine dealloc] in MKNetworkEngine.o ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation) ``` How can I tell the linker to utilize Reachability from the "a" file? (disclaimer, I'm just getting started with ObjC/iOS) Thanks for any help...