Local development workflow

In this article, we will demonstrate how to develop and create patches for bsp.

Prepare working tree

Use --no-build and -C|--distclean to set up the source tree with bsp predefined profiles:

./bsp -C --no-build linux latest

Retrive additional commit history

bsp uses shallow clone by default to save bandwidth and speed up build process. However, you might want to access additional git history for rebase or cherry-pick. You can use either of the following 2 options to fetch more commits:

cd .src/linux
# Fetch HEAD~10 commits
git fetch --depth=10 --all
# Fetch everything
# WARNING! VERY SLOW!
git fetch --unshallow --all

Build packages

You can use --dirty to build without resetting the source tree. This will allow the build process to reuse previously built objects:

./bsp --dirty linux latest

Install build artifacts

You can use ./bsp install to install the built package to a root partition (like a microSD card):

./bsp install linux-image-6.*_arm64.deb /dev/sdb2

Create patch set

After you are happy with the changes, you can export your commits with git format-patch:

mkdir -p linux/latest/0500-my-first-pr
cd .src/linux
# Update start-number to the last one + 1
# in your targetting patch subfolder
git format-patch -M -N --start-number 1 --zero-commit -o ../../linux/latest/0500-my-first-pr HEAD~1

Move the outputted patch files to the corresponding subfolder, and you are ready to submit your first PR!