同时接入百度语音识别和百度语音合成，功能异常
Ta的回复 ：怎么集成呢，导.a包的时候会报错，说 Undefined symbols for architecture x86_64: "_OBJC_CLASS_$_BDSSpeechSynthesizer", referenced from: objc-class-ref in TtsManager.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)
