下载地址：GitHub - hjMaGitHub/xcode10-libstdc-6.0.9.tbd

使用说明：
# libstdc-.6.0.9.tbd

libstdc++.6.0.9.tbd

# for device

put tbd copy to the path:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/

# for simulator

put dylib copy to the path: 

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/

put tbd copy to the path:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/