!2119 #I4UGC9完成，请审批

Merge pull request !2119 from Annie_wang/PR1471

en/device-dev/subsystems/subsys-build-gn-kconfig-visual-config-guid.md

+# Building the Kconfig Visual Configuration
+
+## Overview
+
+### Kconfig Visual Configuration
+Kconfig visual configuration is implemented on [Kconfiglib](https://github.com/ulfalizer/Kconfiglib) and [Kconfig](https://www.kernel.org/doc/html/latest/kbuild/kconfig-language.html#introduction). It allows customized configuration of OpenHarmony subsystem components.
+
+This function has the following advantages:
+
+- Intuitive display of software component options
+- High reliability (Linux kernel and Buildroot use Kconfig for visualized configuration)
+
+### Key Concepts
+
+- [Kconfig](https://www.kernel.org/doc/html/latest/kbuild/kconfig-language.html#introduction): a visual configuration file format for Linux.
+
+- [Kconfiglib](https://github.com/ulfalizer/Kconfiglib): a visual configuration tool based on the Kconfig format for Linux.
+
+### Related Modules
+
+- [Kconfig update module](https://gitee.com/openharmony/build/blob/master/tools/component_tools/generate_kconfig.py): updates the component information list in the Kconfig menu.
+
+- [Config format conversion](https://gitee.com/openharmony/build/blob/master/tools/component_tools/parse_kconf.py): converts the **config** file generated on the GUI to the standard format for compilation and build.
+
+## Procedure
+
+1. Obtain the source code.
+
+   For details, see [Obtaining Source Code](https://gitee.com/openharmony/docs/blob/master/en/device-dev/get-code/sourcecode-acquire.md).
+
+2. Set up the environment.
+
+   The Kconfiglib required for environment configuration has been embedded in the OpenHarmony hb tool.
+
+3. Open the Kconfig configuration interface.
+
+   ```shell
+   #Go to the build repository directory.
+   cd build/tools/component_tools
+   menuconfig kconfig
+   ```
+
+   ![Kconfig example](./figure/kconfig_interface.png)
+
+4. Set parameters.
+
+   For details about the parameters, see [productdefine/common/base/base_product.json](https://gitee.com/openharmony/productdefine_common/blob/master/base/base_product.json).
+
+   ![Setting parameters](./figure/kconfig_set_parameters.gif)
+
+5. Select and configure the component.
+
+   1. Press the arrow keys and select a subsystem. The component list of the subsystem is displayed.
+
+   2. Press **Enter** to select a component.
+
+   3. When setting `feature`, use commas (,) to separate multiple values.
+
+      ![Selecting a component](./figure/kconfig_select_component.gif)
+
+6. Save the settings.
+
+   Press **S** to save the settings. You can set the name of the file to generate. By default, a file named `.config` file is generated in the current directory.
+
+   ![Save settings](./figure/kconfig_save.png)
+
+7. Generate the OpenHarmony style configuration file.
+
+   Example:
+
+   1. Perform a global build.
+
+      ```shell
+      cp productdefine/common/base/base_product.json productdefine/common/products/ohos-arm64.json
+      ./build.sh --product-name ohos-arm64  --build-only-gn --ccache --gn-args pycache_enable=true --gn-args check_deps=true --build-only-gn
+      ```
+
+   2. Generate dependency files for the component.
+
+      ```shell
+      ./build/tools/module_dependence/part_deps.py --deps-files-path out/arm64/deps_files
+      # output: out/arm64/part_deps_info/part_deps_info.json
+      ```
+
+   3. Generate the OpenHarmony style configuration file.
+
+      ```shell
+      cd build/tools/component_tools
+      python3 parse_kconf.py --deps=/path/to/out/arm64/part_deps_info/part_deps_info.json
+      ```
+
+      By default, the file **product.json** is generated in the current directory. You can also use `python3 parse_kconf.py --out="example/out.json"` to specify the file path.
+
+      For more operations, see `python3 parse_kconf.py -h`.
+
+​	
+
+## FAQs
+
+### The latest component information is missing from the menu.
+
+The component list [productdefine/common/base/base_product.json](https://gitee.com/openharmony/productdefine_common/blob/master/base/base_product.json) is updated with product updates and iterations. As a result, the Kconfig menu does not contain the latest components.
+
+Solution:
+
+- Update the [Kconfig file](https://gitee.com/openharmony/build/blob/master/tools/component_tools/kconfig).
+
+  ```shell
+  cd build/tools/component_tools
+  python3 generate_kconfig.py
+  ```
+
+  For more details, see `python3 generate_kconfig.py -h`.