iPhone - Using Reachability throwing duplicate symbol _OBJC_IVAR error

Question

I have added the Apple Reachability files to my project and I am already getting errors. I have NOT even added these files to any of my classes, only added them to my project. How could I already be getting this error?

When compiling I get the following error:

ld: duplicate symbol _OBJC_IVAR_$_Reachability.localWiFiRef in /Users/webmaster/Dropbox/iPhone-Development/Official-Projects/PUC/build/PUC.build/Debug-iphonesimulator/PUC.build/Objects-normal/i386/Reachability-B40F6D608A62C635.o and /Users/webmaster/Dropbox/iPhone-Development/Official-Projects/PUC/build/PUC.build/Debug-iphonesimulator/PUC.build/Objects-normal/i386/Reachability-823B59DA9A9B0D23.o
collect2: ld returned 1 exit status
Command /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1

Note: I am using the Three20 project, so I am not sure if it could be conflicting somehow?

Pasteurism

Answer 1

So, I figured it out. I realized that since I am using ShareKit, it also includes Reachability, so it WAS in my project twice, I just didn't realize it.

Pasteurism

Cheers, was stuck on this and was sure I hadn't used Reachability – Weightless

Answer 2

You need to #import your custom class's .h in your .m. Otherwise the #import "Reachability.h" is happening twice and, I'm guessing, there is a variable called localWiFiRef defined in Reachability.h that now is beind declared twice and hence the "duplicated symbol" error.

When doing that, you will not need to #import "Reachability.h" in the .m.

Kuomintang

I was doing that, I just didn't post it here. So, it seems that I still get this error even when I don't include any reachability files into my class... – Pasteurism

Is "Reachability.h" imported anyplace else? – Kuomintang

Remove all references to the Reachability files, and only have them sitting in my project. Still same error. – Pasteurism

I figured it out. I was using ShareKit which had already included Reachability, I just didn't realize it. – Pasteurism