Duplicate symbol

Question

I recently added some openfeint code to my classes and changed them to .mm

All of a sudden I get errors that duplicate symbols are found in the object files when building.

ld: duplicate symbol _audioPlayer in blah blah /Objects-normal/i386/Stage2.o and /Users/blah blah .build/Debug-iphonesimulator/blah.build/Objects-normal/i386/Stage1.o

Why is it suddenly causing this error? What exactly is the error?

I have variables with the same name in different classes, it should be a problem?

Thanks

Answer 1

You're probably declaring two variables with the same name in global scope (not inside interfaces), and the linker is complaining about that.

Answer 2

This error can also occur if you import a .m file instead of .h.

#import "SomeClass.m"