
Bug: 1106626 Change-Id: Idebe8cd8c62ff99bd3372e31ed7af60abc59bf75 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2373168 Commit-Queue: Samuel Huang <huangs@chromium.org> Reviewed-by: Brian Sheedy <bsheedy@chromium.org> Reviewed-by: Erik Chen <erikchen@chromium.org> Reviewed-by: Yuke Liao <liaoyuke@chromium.org> Reviewed-by: Sven Zheng <svenzheng@chromium.org> Cr-Commit-Position: refs/heads/master@{#803241}
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:
-
"gen" - the main
gn gen
invocation that generates the Ninja files needed for the build. -
"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: