public static File getOrCreateConfigFile(
      final JpsFlexBuildConfiguration bc, final ProjectDescriptor projectDescriptor)
      throws IOException {
    final CompilerConfigGeneratorRt generator =
        new CompilerConfigGeneratorRt(
            bc,
            bc.getModule().getProperties().getModuleLevelCompilerOptions(),
            JpsFlexProjectLevelCompilerOptionsExtension.getProjectLevelCompilerOptions(
                bc.getModule().getProject()),
            projectDescriptor);
    String text = generator.generateConfigFileText();

    if (bc.isTempBCForCompilation()) {
      final JpsFlexBuildConfiguration originalBC =
          bc.getModule().getProperties().findConfigurationByName(bc.getName());
      final boolean makeExternalLibsMerged =
          FlexCommonUtils.isFlexUnitBC(bc)
              || (originalBC != null && originalBC.getOutputType() == OutputType.Library);
      final boolean makeIncludedLibsMerged = FlexCommonUtils.isRuntimeStyleSheetBC(bc);
      text =
          FlexCompilerConfigFileUtilBase.mergeWithCustomConfigFile(
              text,
              bc.getCompilerOptions().getAdditionalConfigFilePath(),
              makeExternalLibsMerged,
              makeIncludedLibsMerged);
    }

    final String name = getConfigFileName(bc, FlexCommonUtils.getBCSpecifier(bc));
    return getOrCreateConfigFile(name, text);
  }