Clone this repo:


  1. f44271e [Fuchsia] Deprecate by Chong Gu · 2 hours ago main
  2. cffeec4 Roll Fuchsia Internal Images from 8.20220525.1.1 to 8.20220525.2.1 by chromium-internal-autoroll · 3 hours ago
  3. 4a933f2 Android: Update Gradle and AGP versions by Andrew Heard · 4 hours ago
  4. 388e1a4 [fuchsia] Remove executable config by Joseph Wang · 6 hours ago
  5. d58af20 [Build] Make optimize_for_size assignable via by Samuel Huang · 6 hours ago


//build contains:

  • Core GN templates and configuration
  • Core Python build scripts

Since this directory is DEPS'ed in by some other repositories (webrtc, pdfium, v8, etc), it should be kept as self-contained as possible by not referring to files outside of it. Some exceptions exist (//testing, select //third_party subdirectories), but new dependencies tend to break these other projects, and so should be avoided.

Changes to //build should be landed in the Chromium repo. They will then be replicated to the stand-alone build repo by the gsubtreed tool. Note: You can find all directories already available through gsubtreed in the list of all chromium repos.


  • //build/config - Common templates via .gni files.
  • //build/toolchain - GN toolchain definitions.
  • Other .py files - Some are used by GN/Ninja. Some by gclient hooks, some are just random utilities.

Files referenced by //.gn:

  • //build/ - Included by all files.
  • //build/secondary - An overlay for files. Enables adding to directories that live in sub-repositories.
  • //build_overrides - Refer to //build_overrides/