fa3c5e3056
In the common case of not specifying a size, we are already running "du" over the image to figure out how big it is. Leverage that by saving it's output and displaying a pruned list of big files when requested. We add a flag to show a summarised option (files >10MiB) and another to show full output, should you wish that level of detail. "Invocation" documentation is updated (and formatted a little better while we're here). Change-Id: I255800790a62fed1c82fcd311f1cc29c9867766d
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Invocation
The scripts can generally just be run. Options can be set on the command line or by exporting variables to override those present in lib/img-defaults. -h to get help.
The image building scripts expect to be able to invoke commands with sudo, so if you want them to run non-interactively, you should either run them as root, with sudo -E, or allow your build user to run any sudo command without password.
Using the variable ELEMENTS_PATH will allow to specify
multiple elements locations. It is a colon (:) separated path list, and
it will work in a first path/element found, first served approach. The
included elements tree is used when no path is supplied, and is added to
the end of the path if a path is supplied.
By default, the image building scripts will not overwrite existing
disk images, allowing you to compare the newly built image with the
existing one. To change that behaviour, set the variable
OVERWRITE_OLD_IMAGE to any value that isn't
0.
Setting the variable DIB_SHOW_IMAGE_USAGE will print out
a summarised disk-usage report for the final image of files and
directories over 10MiB in size. Setting
DIB_SHOW_IMAGE_USAGE_FULL will show all files and
directories. These settings can be useful additions to the logs in
automated build situations where debugging image-growth may be
important.