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

In may case, I followed some instructions to build a newer version of Subversion which directed me to create this symbolic link:

ln -s /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/ /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.10.xctoolchain

Now I'm really a Windows guy so it wasn't immediately obvious to me - but removing the link fixed it for me (after restarting XCode):

rm /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.10.xctoolchain

Phew.

(The actual error I got was the one described here: build error duplicate symbols arclite.o)