# gn_helper_ohos

**Repository Path**: cctom/gn_helper_ohos

## Basic Information

- **Project Name**: gn_helper_ohos
- **Description**: GN Helper (for OHOS build)
- **Primary Language**: Python
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 2
- **Forks**: 0
- **Created**: 2021-11-21
- **Last Updated**: 2024-04-07

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# gn_helper_ohos

#### 介绍
GN Helper (for OHOS build)  
Print GN dependency information from a dependency tree stored in a file.

#### 使用说明
Enable the check_deps arg when running hb build (eg. hb build --build-only-gn --gn-args check_deps=true) to generate the files documenting OpenHarmony dependencies.  Then write the output of a GN deps --tree to a file and specify the file with the --cache option when running gn_helper (defaults to deptree.cache in the out_dir).  
eg:  
`gn desc out/rk3568 //build/core/gn:images deps --tree > out/rk3568/deptree.cache`

The commands which are the same as GN use the same command line as GN.  
eg:  
`gn_helper.py desc out/rk3568 //build/ohos/images:make_images deps --tree`

gn_helper_ohos understands OHOS type descriptions \<subsystem>:\<part_name> and \<part_name>:\<module> and I added some options.  
eg:  
`gn_helper.py desc out/rk3568 time:time_service deps --all --type external --reverse-external-deps`  
Prints all the external dependencies of time:time_service in \<part_name>:\<module> format.

`gn_helper.py desc out/rk3568 time:time_service deps --skip-suffix __notice --tree --leading-to image_framework:image --reverse-external-deps`  
Prints a dependency tree from time:time_service for all deps not ending with __notice leading to image_framework:image

Notes:  
--leading-to can be used to see paths from one target to another (easier to implement than path).  
--skip-suffix, when used with --tree, excludes everything under a target with the specified suffix from the tree.  
--type doesn't do anything when used with --tree