iOS接入新浪微博SDK编译报错

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Undefined symbols for architecture x86_64:

  "_OBJC_CLASS_$_PHAsset", referenced from:

      objc-class-ref in libWeiboSDK.a(WBImageObject.o)

      objc-class-ref in libWeiboSDK.a(WBNewVideoObject.o)

  "_OBJC_CLASS_$_PHAssetChangeRequest", referenced from:

      objc-class-ref in libWeiboSDK.a(WBImageObject.o)

      objc-class-ref in libWeiboSDK.a(WBNewVideoObject.o)

  "_OBJC_CLASS_$_PHPhotoLibrary", referenced from:

      objc-class-ref in libWeiboSDK.a(WBImageObject.o)

      objc-class-ref in libWeiboSDK.a(WBNewVideoObject.o)

ld: symbol(s) not found for architecture x86_64

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

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解决方法