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  1. 8d55063 Add src-side configs for linux-blink-heap-incremental-marking trybot. by John Budorick · 7 hours ago master
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  3. 4698b5b Add jumbo trybots by Stephen Martinis · 2 days ago
  4. 678c223 Revert "[CFI] Enable cfi-icall on CFI memory bot" by Vlad Tsyrklevich · 2 days ago
  5. a62ed1c Fix name of cros vm test bot in mb_config. by Benjamin Pastene · 2 days ago

MB - The Meta-Build wrapper

MB is a simple wrapper around the GN build tool.

It was originally written as part of the GYP->GN migration, in order to provide a uniform interface to either GYP or GN, such that users and bots can call one script and not need to worry about whether a given bot was meant to use GN or GYP.

It eventually grew additional functionality and is now still used even though everything is GN-only.

It supports two main functions:

  1. “gen” - the main gn gen invocation that generates the Ninja files needed for the build.

  2. “analyze” - the step that takes a list of modified files and a list of desired targets and reports which targets will need to be rebuilt.

We also use MB as a forcing function to collect all of the different build configurations that we actually support for Chromium builds into one place, in //tools/mb/mb_config.pyl.

For more information, see: