Xcode 6.1 Missing required architecture X86_64 in file

Question

In Xcode 6.1 , I am getting error for iPhone 6, iPhone 5s(iOS 7.1) which says

    Undefined symbols for architecture x86_64:
      \"_OBJC_CLASS_$_ClientAut         


        

Answer 1

I use lipo command to combine two built static libraries manually.

EX: I have a static library(libXYZ.a) to build.

I run build for Generic iOS Device and got Product in Debug-iphoneos/

$ lipo -info Debug-iphoneos/libXYZ.a
Architectures in the fat file: Debug-iphoneos/libXYZ.a are: armv7 arm64

Then I run build for any iOS Simulator and got Product in Debug-iphonesimulator/

$ lipo -info Debug-iphonesimulator/libXYZ.a
Architectures in the fat file: Debug-iphonesimulator/libXYZ.a are: i386 x86_64

Finally I combine into one to contain all architectures.

$ lipo -create Debug-iphoneos/libXYZ.a Debug-iphonesimulator/libXYZ.a -output libXYZ.a
$ lipo -info libXYZ.a
Architectures in the fat file: libXYZ.a are: armv7 i386 x86_64 arm64