llvm/clang/test/Modules/Inputs/wildcard-submodule-exports/module.modulemap

module A {
  module One { header "A_one.h" }
  module Two { header "A_two.h" }
}

module B {
  module One { header "B_one.h" }
  module Two { header "B_two.h" }
}

module C {
  module One { 
    header "C_one.h" 
    export A.*
  }
  module Two { 
    header "C_two.h"
    export * 
  }
}