Method ForceLinkerLanguage

Source/cmGlobalXCodeGenerator.cxx:1803–1851

}

void cmGlobalXCodeGenerator::ForceLinkerLanguage(cmGeneratorTarget* gtgt)
{
  // This matters only for targets that link.
  if (gtgt->GetType() != cmStateEnums::EXECUTABLE &&
      gtgt->GetType() != cmStateEnums::SHARED_LIBRARY &&
      gtgt->GetType() != cmStateEnums::MODULE_LIBRARY) {
    return;
  }

  std::string llang = gtgt->GetLinkerLanguage("NOCONFIG");
  if (llang.empty()) {
    return;
  }

  // If the language is compiled as a source trust Xcode to link with it.
  for (auto const& Language :
       gtgt->GetLinkImplementation("NOCONFIG", cmGeneratorTarget::UseTo::Link)
         ->Languages) {
    if (Language == llang) {
      return;
    }
  }

  // Allow empty source file list for iOS Sticker packs
  cm::string_view productType = this->GetTargetProductType(gtgt);
  if (productType ==
      "com.apple.product-type.app-extension.messages-sticker-pack"_s) {
    return;
  }

  // Add an empty source file to the target that compiles with the
  // linker language.  This should convince Xcode to choose the proper
  // language.
  cmMakefile* mf = gtgt->Target->GetMakefile();
  std::string fname = cmStrCat(
    gtgt->GetLocalGenerator()->GetCurrentBinaryDirectory(), "/CMakeFiles/",
    gtgt->GetName(), "-CMakeForceLinker.", cmSystemTools::LowerCase(llang));
  {
    cmGeneratedFileStream fout(fname);
    fout << '\n';
  }
  if (cmSourceFile* sf = mf->GetOrCreateSource(fname)) {
    sf->SetSpecialSourceType(
      cmSourceFile::SpecialSourceType::XcodeForceLinkerSource);
    sf->SetProperty("LANGUAGE", llang);
    sf->SetProperty("CXX_SCAN_FOR_MODULES", "0");
    gtgt->AddSource(fname);
  }
}

bool cmGlobalXCodeGenerator::IsHeaderFile(cmSourceFile* sf)
{