Function HasUniqueOutputs

Source/cmLocalNinjaGenerator.cxx:765–782

namespace {
bool HasUniqueOutputs(std::vector<cmCustomCommandGenerator> const& ccgs)
{
  std::set<std::string> allOutputs;
  std::set<std::string> allByproducts;
  for (cmCustomCommandGenerator const& ccg : ccgs) {
    for (std::string const& output : ccg.GetOutputs()) {
      if (!allOutputs.insert(output).second) {
        return false;
      }
    }
    for (std::string const& byproduct : ccg.GetByproducts()) {
      if (!allByproducts.insert(byproduct).second) {
        return false;
      }
    }
  }
  return true;
}
}

std::string cmLocalNinjaGenerator::CreateUtilityOutput(