buildbrain/README.md

buildbrain

This repository includes:

• linux-brain and u-boot-brain as submodules
• Useful build targets in Makefile
• r3build.toml to watch changes that occur in submodules

Getting Started

1. Clone this repository with recursive clone enabled.

   $ git clone --recursive git@github.com:puhitaku/buildbrain.git
   

   • If you've cloned it without --recursive, run following command:

   $ git submodule update --init --recursive
   

2. Then run make setup to prepare an build environment. Namely;

   • Python 3 venv in env
   • r3build command in the env

3. Install uuu.

   • Follow the instruction and build uuu executable.
   • Put uuu where the PATH executable points to.

Build and inject U-Boot

1. Run make udefconfig to generate .config.

2. Run make ubuild to build whole repository and generate u-boot.sb.

   • i.MX283 loads a packed U-Boot executable called u-boot.sb.

3. To inject the executable into i.MX283 in recovery mode, run make uuu.

Build Linux

1. Run make ldefconfig to generate .config.

2. Run make lbuild to generate zImage.

3. Confirm that linux-brain/arch/arm/boot/zImage exists.

Watch changes in submodules & auto-build

1. Run r3build. It'll detect the changes you make and builds the corresponding executable automatically.

What's r3build?

r3build is a smart file watcher that aims to provide hot-reloading feature like Web frontend development.