Create a swift package of C++ library with C umbrella header

I have this open source library https://github.com/amraboelela/CLevelDB

Which is in c++, and have a C umbrella header https://github.com/amraboelela/CLevelDB/blob/master/CLevelDB/CLevelDB.h

What is the right Package.swift format which can work in Xcode for this library, so it can be imported by other swift packages?

This is the current one I have: https://github.com/amraboelela/CLevelDB/blob/master/Package.swift
Create a swift package of C++ library with C umbrella header
 
 
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