+extern boost::filesystem::path config_path (boost::optional<std::string> version);
+extern boost::filesystem::path directory_containing_executable ();
+extern boost::filesystem::path fix_long_path (boost::filesystem::path path);
+extern bool show_in_file_manager (boost::filesystem::path dir, boost::filesystem::path select);
+namespace dcpomatic {
+ std::string get_process_id ();
+}