蓝牙接入iOS SDK在Xcode 6.4中编译失败

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下载了GizDataAccess并导入Single View工程，在定义

GizDataAccessLogin或者GizDataAccessSource时，都会编译失败，

编译提示如下，其中的armv7会根据目标不同变为i386，arm64等：

Undefined symbols for architecture armv7:

  "_OBJC_CLASS_$_AFHTTPRequestOperationManager", referenced from:

      objc-class-ref in GizDataAccess(GizDataAccessNetwork.o)

ld: symbol(s) not found for architecture armv7

clang: error: linker command failed with exit code 1 (use -v to see invocation)

调用的函数如下：

GizDataAccessSource* gdaSource = [[GizDataAccessSource alloc] initWithDelegate:self];

GizDataAccessLogin* gdaLogin = [[GizDataAccessLogin alloc] initWithDelegate:self];