Tracking changes to image contents in Yocto - buildhistory

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Yocto provides "buildhistory" to keep track of changes to the image.  To enable "buildhistory", need to add the following lines in the local.conf file.

INHERIT += "buildhistory"
BUILDHISTORY_COMMIT = "1"

 INHERIT method includes the buildhistory class hooks in the building process.
BUILDHISTORY_COMMIT enables bitbake to create a new GIT Commit in the buildhistory process. During the first build with the above changes, "buildhistory" directory is created, which has the git repository inside it.


You can see I have added the above lines to the local.conf file and modified the core-image-minimal image to include 'usbutils' package.

Now, to find out what all has changed, you can use the script provided by poky: 'buildhistory-diff'
To use this script you need to have installed GitPython installed. If you get the following error:
"Please install GitPython (python3-git) 0.3.4 or later in order to use this script", run the following command: "sudo pip3 install gitpython"




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