Function displayMessage

Source/cmMessenger.cxx:72–110

}

void displayMessage(MessageType t, std::ostringstream& msg)
{
  // Add a note about warning suppression.
  if (t == MessageType::AUTHOR_WARNING) {
    msg << "This warning is for project developers.  Use -Wno-dev to suppress "
           "it.";
  } else if (t == MessageType::AUTHOR_ERROR) {
    msg << "This error is for project developers. Use -Wno-error=dev to "
           "suppress it.";
  }

  // Add a terminating blank line.
  msg << '\n';

#if !defined(CMAKE_BOOTSTRAP)
  // Add a C++ stack trace to internal errors.
  if (t == MessageType::INTERNAL_ERROR) {
    std::string stack = cmsys::SystemInformation::GetProgramStack(0, 0);
    if (!stack.empty()) {
      if (cmHasLiteralPrefix(stack, "WARNING:")) {
        stack = "Note:" + stack.substr(8);
      }
      msg << stack << '\n';
    }
  }
#endif

  // Output the message.
  cmMessageMetadata md;
  md.attrs = getMessageColor(t);
  if (t == MessageType::FATAL_ERROR || t == MessageType::INTERNAL_ERROR ||
      t == MessageType::DEPRECATION_ERROR || t == MessageType::AUTHOR_ERROR) {
    cmSystemTools::SetErrorOccurred();
    md.title = "Error";
  } else {
    md.title = "Warning";
  }
  cmSystemTools::Message(msg.str(), md);
}

void PrintCallStack(std::ostream& out, cmListFileBacktrace bt,
                    cm::optional<std::string> const& topSource)