Duplicate Symbols for Architecture arm64

Question

When I try running my Xcode Project it fails with an error stating that I have duplicate symbols. I looked online where the find these duplicates but have had no luck:

Answer 1

This error happens when Linker is trying to link the obj files. Few reasons that i could think of for this error are:

1. The duplicated Function/Class is defined at two different places/files in the project and only one of them was supposed to compile for any variation of build command. But somehow both those files got compiled in your project. So you need to check your if-else conditions or other dependencies which adds src files to the list of files needed to be compiled and remove the un-needed file for your particular build command.

2. The duplicated Function/Class is defined accidentally at two different places/files in the project. Remove the wrong definition.

3. Clean your OBJ directory before you build again, there could be some old obj files in there from your previous builds which might be causing this conflict.

P.S i am no expert, but this is how i solved this problem when i faced it. :)