Xcode 5 can't find an armv7s architecture in a static library even though file and lipo say it's there

Question

I'm trying to integrate BugshotKit into my iOS project. I've built the static library on my machine, included it in my project directory, set my library and header search paths appropriately and added -lBugshotKit to my Other Linker Flags. But when I build, I'm getting the following error:

ld: warning: ignoring file ...Project/BugshotKit/libBugshotKit.a, missing required architecture armv7s in file .../BugshotKit/libBugshotKit.a (2 slices)

This strikes me as odd, because lipo thinks it's there:

$ xcrun -sdk iphoneos lipo -info libBugshotKit.a
Architectures in the fat file: libBugshotKit.a are: armv7 armv7s x86_64 arm64 

Note also how Xcode thinks there are "2 slices" where lipo (and file, for what it's worth) thinks there are four.

What is going wrong and how might I fix it?

Answer 1

It turns out Xcode was just being Xcode and Product/Clean Build Folder (⌥⇧⌘K) fixed it.