Duplicate Symbol Error in Objective-C build?

Question

I got this error when I press build+debug:

ld: duplicate symbol .objc_class_name_BlogTableItemCell in /Users/fabian/Development/Workspaces/iphone_experiments         


        

Answer 1

I had a similar problem due to poor defining of consts. I had defined a const in my header:

int const kCropLocationTop = 1;

This was presumably imported multiple times. To fix i changed the header def as follows:

extern int const kCropLocationTop;

and moved the assigning of the const to the .m file:

int const kCropLocationTop = 1;

Hope that helps anyone who's as ignorant of simple objective c concepts as I am!