Relentnet/MarineComOS_RPI
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Allow export image customisation (#801)

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* Allow export image customisation

Add new variable EXPORT_CONFIG_DIR to set the location of the scripts
pigen will run when exporting an image. Setting this is optional. If
not specified, the current location is retained.

By utilising STAGE_LIST AND EXPORT_CONFIG_DIR, a user can construct
custom images out-of-tree without modification to any defaults.

(cherry picked from commit e5e6ceeaf46f52f77b759d3d35aef8bbd0a69c8b)

* Shellcheck and style fixes

Fixed shellcheck warnings and made the changes more consistent with the surrounding code

---------

Co-authored-by: Serge Schneider <serge@raspberrypi.com>
This commit is contained in:
Matthew Lear 2024-10-29 10:15:10 +00:00 committed by GitHub
parent 9dfbb1546d
commit b8e497cf21
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2 changed files with 12 additions and 1 deletions
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4
README.md
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@ -205,6 +205,10 @@ The following environment variables are supported:
If set, then instead of working through the numeric stages in order, this list will be followed. For example setting to `"stage0 stage1 mystage stage2"` will run the contents of `mystage` before stage2. Note that quotes are needed around the list. An absolute or relative path can be given for stages outside the pi-gen directory.
* `EXPORT_CONFIG_DIR` (Default: `$BASE_DIR/export-image`)
If set, use this directory path as the location of scripts to run when generating images. An absolute or relative path can be given for a location outside the pi-gen directory.
A simple example for building Raspberry Pi OS:
```bash

9
build.sh
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@ -301,6 +301,13 @@ log "Begin ${BASE_DIR}"
STAGE_LIST=${STAGE_LIST:-${BASE_DIR}/stage*}
export STAGE_LIST
EXPORT_CONFIG_DIR=$(realpath "${EXPORT_CONFIG_DIR:-"${BASE_DIR}/export-image"}")
if [ ! -d "${EXPORT_CONFIG_DIR}" ]; then
echo "EXPORT_CONFIG_DIR invalid: ${EXPORT_CONFIG_DIR} does not exist"
exit 1
fi
export EXPORT_CONFIG_DIR
for STAGE_DIR in $STAGE_LIST; do
STAGE_DIR=$(realpath "${STAGE_DIR}")
run_stage
@ -308,7 +315,7 @@ done
CLEAN=1
for EXPORT_DIR in ${EXPORT_DIRS}; do
STAGE_DIR=${BASE_DIR}/export-image
STAGE_DIR=${EXPORT_CONFIG_DIR}
# shellcheck source=/dev/null
source "${EXPORT_DIR}/EXPORT_IMAGE"
EXPORT_ROOTFS_DIR=${WORK_DIR}/$(basename "${EXPORT_DIR}")/rootfs