return systemHeaderDirs;
    }

    public List<File> getUserHeaderSearchPaths() {
        return userHeaderDirs;
    }

    public List<DefaultMacroDirective> getMacroDefines() {
        return macroDefines;
    }

    public List<String> getMacroUndefines() {
        return Collections.emptyList();
    }

    public List<String> getAdditionalArgs() {

     */
    Set<File> getHeaderDirs();

    /**
     * Returns the macro define directives for this binary.
     */
    DomainObjectSet<? extends MacroDirective> getMacroDefines();

    /**
     * Returns the macro undefine directives for this binary.
     */
    Set<String> getMacroUndefines();

    /**