From b578d659b7e14daf340279d78d4f4498f065e6c9 Mon Sep 17 00:00:00 2001
From: Daniel Micay
The operating system source tree includes hundreds of repositories. Many of these + are only used for debugging, testing or development and are not actually part of what + gets used for building a production release. The manifest repository references all of + these. Most of these are used unmodified from the Android Open Source Project (AOSP). + A few dozen of the repositories including most of the core OS are either forked from + AOSP or are unique to GrapheneOS. The operating system has a unified build system, but + some components like Chromium are too complex to fit into it so they're included as + prebuilts instead of porting them to the AOSP build system. This is also done for + developer convenience and bootstrapping, to avoid needing to build all the native / + cross-compilation toolchains for each host and target platform combination, etc. The + prebuilts can all be built from source if desired. The build instructions will be + expanded to cover all of this in the future.
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