SDK 1-5-8 for iOS5

Is there any tutorial that teaches us how to import the QCAR lib in a new Xcode project from scratch? I tried to set up the same environment like "FramMarker" example. However, I kept getting some linker errors: Undefined symbols for architecture armv7: "_SecItemAdd", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecReturnRef", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecValueData", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_SecItemDelete", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_SecKeyDecrypt", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrKeyClass", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrKeyClassPublic", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecClassKey", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_SecItemCopyMatching", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecClass", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_SecKeyGetBlockSize", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrKeyTypeRSA", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecReturnPersistentRef", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrCanDecrypt", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrKeyType", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) "_kSecAttrApplicationTag", referenced from: l2920 in libQCAR.a(libQCAR.a-armv7-master.o) ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation) Any idea to solve this? Thanks a lot!