Thanks @DTS Engineer  , I believe Package.swift does not support both C++ and swift files in single target. right ? OR has it changed now ? What I have understood so for that for these setup (both C++ and Swift) we need to create two different target(one for C++ and other for swift) in single Package.swift file and then I need also I need to define interop setting also. So basically this Package.swift model will help me to create my static libraries without using XCode IDE. And for framework libraries and apps, we will use XCODE IDE and use the libraries as dependency/linkage created via Package.swift mechanism . right ? Just checking, for framework and apps, does apple have anything similar as Package.swift?

Thanks @B347 . I went through this and yes it would solve one of the problem, that now I can maintain these .xcconfig files as one source for all developers . And a developer who creates a project on xcode IDE can use these configuration . But can I create a xcode project without using xcode IDE? Basically I need to fulfil in nightly build. Get latest source code. -- This can be done easily via pulling all latest code from server to this machine. ** 2) Create a xcode project without using xcode IDE as its non-interactive env -- This I dont know how to do it :( OR even its possible to do so . ** build different projects. -- This can be done by using xcodebuild on command line.