Creating a Patch to a Package in Buildroot using Git:

First Step - getting a clone of the code.

There are 2 ways to do so:

• use buildroot to fetch the source code for us.

• fetch the source code manually.

Fetching Source Code Using Buildroot:

	make <package-name>-source

OR

	make <package-name>-patch  # also apply all available patches from buildroot.

Let’s assume that our package is called “linux” (in this challenge, challenge #3, it

actually is the name of our desired package for patching).

Then we should execute the following command:

	make linux-source

OR fetch the source code of linux manually:

	git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git

In case we’ve used buildroot we should do the following step as well.

	cd </path/to/buildroot>/output/build/<package-name>
        git init
        git add .
        git commit -m "meaningless commit message"

In Linux case:

	cd </path/to/buildroot>/output/build/linux
        git init
        git add .
        git commit -m "meaningless commit message"

Second Step - Modifying The Source Code:

In this stage we should modify source code as we like. After all the modifications were saved a git commit should be created. The commit message should be meaningless since it will be included in the patch file.

	git commit -s -m "some meaningless commit message"

Third & Final Step - Creating The Patch File:

In order for us to create the patch file we will use git since git format-patch can create patch files which includes commit messages. Creating patches is simple, it only requires executing the following command:

	git format-patch -M -N --signoff -1 HEAD -o <where to store the new patch file>