1# MB - The Meta-Build wrapper 2 3MB is a simple wrapper intended to provide a uniform interface to either 4GYP or GN, such that users and bots can call one script and not need to 5worry about whether a given bot is meant to use GN or GYP. 6 7It supports two main functions: 8 91. "gen" - the main `gyp_chromium` / `gn gen` invocation that generates the 10 Ninja files needed for the build. 11 122. "analyze" - the step that takes a list of modified files and a list of 13 desired targets and reports which targets will need to be rebuilt. 14 15We also use MB as a forcing function to collect all of the different 16build configurations that we actually support for Chromium builds into 17one place, in `//tools/mb/mb_config.pyl`. 18 19For more information, see: 20 21* [The User Guide](docs/user_guide.md) 22* [The Design Spec](docs/design_spec.md) 23