环信3.2.0 导入报错 求助 求助！！！！！

   环信3.2.0，   导入报错Undefined symbols for architecture x86_64:
  "webrtc::BlockDifference_SSE2_W32(unsigned char const*, unsigned char const*, int)", referenced from:
      webrtc::BlockDifference(unsigned char const*, unsigned char const*, int) in libHyphenateFullSDK.a(desktop_capture.differ_block.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)