错误提示:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/i386/RTLabel.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(RTLabel.o)
duplicate symbol _OBJC_METACLASS_$_RTLabel in:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/i386/RTLabel.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(RTLabel.o)
duplicate symbol _OBJC_METACLASS_$_RTLabelButton in:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/i386/RTLabel.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(RTLabel.o)
duplicate symbol _OBJC_METACLASS_$_RTLabelComponent in:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/i386/RTLabel.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(RTLabel.o)
duplicate symbol _kReachabilityChangedNotification in:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/i386/Reachability.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(BNReachability.o)
ld: 23 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)
注意错误中加粗文字，从报错可以看出和RTLabel这个类有关，项目中有这个类，但是百度导航中没有，猜测是不是百度有封装到静态库中，所以重复了，尝试着把项目中的RTLabel类和用到的地方全部改了名字，成功，不再报RTLabel这个类的错误了，但出现另外的问题
ld: warning: path '/Users/xxxxxx/Desktop/project/project/library/libWeChatSDK.a' following -L not a directory
duplicate symbol _kReachabilityChangedNotification in:
/Users/xxxxxx/Library/Developer/Xcode/DerivedData/project-bayynvernsehfqbjjbzxrksdlofm/Build/Intermediates/project.build/Debug-iphonesimulator/project.build/Objects-normal/x86_64/Reachability.o
/Users/xxxxxx/Desktop/project/project/library/BaiduNaviSDK/libbaiduNaviSDK.a(BNReachability.o)
ld: 1 duplicate symbol for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
问题所指：和Reachability类的kReachabilityChangedNotification通知有关，同样的方法，把此通知换个名字，在跑次程序，全部OK
