Method CheckCompileFeaturesAvailable

Source/cmStandardLevelResolver.cxx:594–631

}

bool cmStandardLevelResolver::CheckCompileFeaturesAvailable(
  std::string const& targetName, std::string const& feature, std::string& lang,
  std::string* error) const
{
  if (!this->CompileFeatureKnown(targetName, feature, lang, error)) {
    return false;
  }

  if (!this->Makefile->GetGlobalGenerator()->GetLanguageEnabled(lang)) {
    return true;
  }

  cmValue features = this->CompileFeaturesAvailable(lang, error);
  if (!features) {
    return false;
  }

  cmList availableFeatures{ features };
  if (!cm::contains(availableFeatures, feature)) {
    std::ostringstream e;
    e << "The compiler feature \"" << feature << "\" is not known to " << lang
      << " compiler\n\""
      << this->Makefile->GetSafeDefinition(
           cmStrCat("CMAKE_", lang, "_COMPILER_ID"))
      << "\"\nversion "
      << this->Makefile->GetSafeDefinition(
           cmStrCat("CMAKE_", lang, "_COMPILER_VERSION"))
      << '.';
    if (error) {
      *error = e.str();
    } else {
      this->Makefile->IssueMessage(MessageType::FATAL_ERROR, e.str());
    }
    return false;
  }

  return true;
}

bool cmStandardLevelResolver::CompileFeatureKnown(
  std::string const& targetName, std::string const& feature, std::string& lang,