Error building for iOS simulator with Unity 5.3.0 and Xcode 7.1 (7B91b)

I am using Unity 5.3.0f4 (and earlier 5.2.3) followed by Xcode 7.1 (7B91b), to build for iOS simulator. When building in Xcode, I get this error:

"ld: in /Uesrs/<path-to-my-build>/iOS/Libraries/libiPhone-lib.a(asmassembly.o), building for iOS simulator, but linking in object file built for OSX, for architecture x86_64"

Looking into this I found that the libiPhone-lib.a library contains code which was compiled for MacOSX. A new feature for Xcode 7 asserts that the platform flag contained in...

Error building for iOS simulator with Unity 5.3.0 and Xcode 7.1 (7B91b)