Xcode4 Linking Problem. File was built for archive which is not the architecture being linked (arm6)

Question

Recently, I switched to Xcode4 and when I compile my project I got following error.

ld: warning: ignoring file /Users/myname/Library/Developer/Xcode/DerivedD         


        

Answer 1

I had this problem with the Three20 library. The thing that finally did it for me was switching the Project Format from Xcode 3.1 to Xcode 3.2 - leaving 'build active arch only' as "no".

Answer 2

I managed it by clicking the "unfriendly" Project's (in my case GMGridView). In tab "Architectures", I changed the value from something (I don't remember exactely anymore, I guess it was:) "armv7, armv6s" to "armv7, armv7". After that it worked for me.

Answer 3

I fixed this problem thanks to another thread where they show that armv6/armv7 is actually a little different than what you think it is: Upgrading to xcode 4 error No architectures to compile for

Answer 4

I met this problem when I upgraded the XCode to 4.5 and iOS to iOS6. For GMGridView, it just happened. Not for simulator, but only for device.

I fixed this by the following steps: 1) Go to GMGridView project -> Build Settings 2) Under Setting -> Architectures, select "Standard (armv7, armv7s)"

Then clean all (including DerivedData) and rebuild.

Hope it helps!

Answer 5

I managed to resolve this by just creating a adhoc configuration inside the Tapku info settings ...

XCODE 4, Project > Archive = library not found for -lTapkuLibrary - Issues - devinross/tapkulibrary - GitHub

Answer 6

Something else that worked for me was making sure that all sub projects had the architecture set to be armv6 and armv7, making sure to set both the TARGET and the PROJECT of each sub project. After cleaning and rebuilding everything, it worked without a problem.