1# utils<a name="EN-US_TOPIC_0000001078403148"></a> 2 3- [Introduction](#section11660541593) 4- [Directory Structure](#section17271017133915) 5- [Usage](#section137421544135015) 6- [Repositories Involved](#section1249817110914) 7 8## Introduction<a name="section11660541593"></a> 9 10The **utils** repository provides ndk_libraries_config and system functions. 11 12## Directory Structure<a name="section17271017133915"></a> 13 14``` 15utils 16├── native # Utility class implementation at the Native layer 17├── ndk_libraries_config # Configuration of the NDK library 18└── system # System-related predefined values and security policy configuration 19``` 20 21## Usage<a name="section137421544135015"></a> 22 23For details, see the API Reference. 24 25## Repositories Involved<a name="section1249817110914"></a> 26 27Utils subsystem 28 29**utils** 30 31utils\_native 32 33[utils\_native\_lite](https://gitee.com/openharmony/utils_native_lite) 34 35