Xcode 10, Xcode11 'string' file not found C++ header file, `libstdc++6.0.9.tbd` library missing issue

Xcode10 'string' file not found C++ header file missing issue

Copy the corresponding file to the corresponding directory in Xcode 10

Real machine: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/c++
Simulator:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/include/c++

Xcode9 C++ header file github link:https://github.com/DeCori/Xcode9-cpp.git

Missing from Xcode 10libstdc++6.0.9.tbdstorehouse
The files in folders 1, 2, 3, and 4 should be copied to the following four directories in Xcode 10:

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

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

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

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

Xcode11 path:
Xcode11 file 1 path changed

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