Xcode 7.1 环信sdk集成问题

在Xcode 7.1中集成EaseMobSDK和EaseUI，开始按照教程集成EaseMobSDK能够成功运行，接下来集成EaseUI时遇到问题：
ld: 64 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
 
linker的设置为 -force_load ...SDKLite.a，如果改成SDK.a会报错：
Undefined symbols for architecture x86_64:
  "webrtc::FIRFilterSSE2::FIRFilterSSE2(float const*, unsigned long, unsigned long)", referenced from:
      webrtc::FIRFilter::Create(float const*, unsigned long, unsigned long) in libEaseMobClientSDK.a(fir_filter.o)
ld: symbol(s) not found for architecture x86_64
 
如果改成-ObjC，则会报错：
Undefined symbols for architecture x86_64:
  "_ACAccountTypeIdentifierTwitter", referenced from:
      -[PF_Twitter getLocalTwitterAccountAsync] in Parse(PF_Twitter.o)
  "_OBJC_CLASS_$_ACAccountStore", referenced from:
      objc-class-ref in Parse(PF_Twitter.o)
  "_OBJC_CLASS_$_SKPayment", referenced from:
      objc-class-ref in Parse(PFPurchase.o)
  "_OBJC_CLASS_$_SKPaymentQueue", referenced from:
      objc-class-ref in Parse(PFPurchase.o)
  "_OBJC_CLASS_$_SKProductsRequest", referenced from:
      objc-class-ref in Parse(PFPurchase.o)
  "_OBJC_CLASS_$_SLComposeViewController", referenced from:
      objc-class-ref in Parse(PF_Twitter.o)
  "_OBJC_CLASS_$_SLRequest", referenced from:
      objc-class-ref in Parse(PF_Twitter.o)
  "_SLServiceTypeTwitter", referenced from:
      -[PF_Twitter getAccessTokenForReverseAuthAsync:localTwitterAccount:] in Parse(PF_Twitter.o)
      -[PF_Twitter getLocalTwitterAccountAsync] in Parse(PF_Twitter.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
 
项目结构请看附件，导入的为demo3.0中的相关文件，并且项目不包括其他的第三方库。
现在不知道怎么解决了，所以来求助一下，谢谢大家！