原因：Xcode10~取消了6.0.9和6的支持，临时解决办法是下载 libstdc++、libstdc++.6、libstdc++6.0.9，拷贝到对应的路径即可
文件下载地址：
https://pan.baidu.com/s/14eFtJFWk_ctCl5DAgk0n8g 提取码vk8v
下载完成后，将三个文件拷贝到下载包里面的路径文件里面标注的两个两个路径下即可
XCode10配置方式
真机
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/
模拟器
dylib路径
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/
tdb路径
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/
XCode11配置方式
真机
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/
模拟器
dylib路径
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/
tdb路径
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/
