Clone this repo:

Branches

  1. 1dedf91 Fix new linux-blink-heap-incremental-marking bot name. by John Budorick · 11 hours ago master
  2. b19df6b Add build and test configuration for new Blink Heap Incremental Marking bot. by John Budorick · 16 hours ago
  3. f102c86 Add an Android CFI bot on chromium.memory (src). by Peter Collingbourne · 18 hours ago
  4. d777f24 Teach mb to be able to generate Windows GN files while running under Linux. by Nico Weber · 2 days ago
  5. 730c2b7 Add no-op optional Android trybot description. by Kenneth Russell · 3 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: