Method ReserveGlobalTargetCodegen

Source/cmGlobalGenerator.cxx:3057–3095

}

void cmGlobalGenerator::ReserveGlobalTargetCodegen()
{
  // Read the policy value at the end of the top-level CMakeLists.txt file
  // since it's a global policy that affects the whole project.
  auto& mf = this->Makefiles[0];
  auto const policyStatus = mf->GetPolicyStatus(cmPolicies::CMP0171);

  this->AllowGlobalTargetCodegen = (policyStatus == cmPolicies::NEW);

  cmTarget* tgt = this->FindTarget("codegen");
  if (!tgt) {
    return;
  }

  MessageType messageType = MessageType::AUTHOR_WARNING;
  std::ostringstream e;
  bool issueMessage = false;
  switch (policyStatus) {
    case cmPolicies::WARN:
      e << cmPolicies::GetPolicyWarning(cmPolicies::CMP0171) << '\n';
      issueMessage = true;
      CM_FALLTHROUGH;
    case cmPolicies::OLD:
      break;
    case cmPolicies::NEW:
      issueMessage = true;
      messageType = MessageType::FATAL_ERROR;
      break;
  }
  if (issueMessage) {
    e << "The target name \"codegen\" is reserved.";
    this->GetCMakeInstance()->IssueMessage(messageType, e.str(),
                                           tgt->GetBacktrace());
    if (messageType == MessageType::FATAL_ERROR) {
      cmSystemTools::SetFatalErrorOccurred();
      return;
    }
  }
}

bool cmGlobalGenerator::CheckCMP0171() const
{