study_objc4/objc4-750/runtime/Module/module.modulemap

module ObjectiveC [system] [extern_c] {
  umbrella "."
  export *
  module * { 
    export *
  }

  module NSObject {
    requires objc
    header "NSObject.h"
    export *
  }

#if defined(BUILD_FOR_OSX)
  module List {
    // Uses @defs, which does not work in ObjC++ or non-ARC.
    requires objc, !objc_arc, !cplusplus
    header "List.h"
    export *
  }

  module Object {
    requires objc
    header "Object.h"
    export *
  }

  module Protocol {
    requires objc
    header "Protocol.h"
    export *
  }
#endif

#if !defined(BUILD_FOR_OSX)
  // These file are not available outside macOS.
  exclude header "hashtable.h"
  exclude header "hashtable2.h"
#endif
}