[molecules] add Sabayon ARM Base molecule (woot!)

molecules/sabayon-arm-base.spec

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+# Define an alternative execution strategy, in this case, the value must be
+execution_strategy: chroot_to_mmc
+
+# Error script command, executed when something went wrong and molecule has
+# to terminate the execution
+# error_script: /path/to/some/error_script.sh
+
+# Pre-image building script. Hook called before image file creation
+# pre_image_script: /sabayon/scripts/pre_image_script.sh
+
+# Post-image building script. Hook called after image file creation and move
+# into destination directory.
+# Variables exported:
+# IMAGE_PATH = path pointing to the destination image file
+# IMAGE_CHECKSUM_PATH = path pointing to the destination image file checksum (md5)
+post_image_script: /sabayon/scripts/post_mmc_image_script.sh
+
+# Destination directory for the image path (MANDATORY)
+destination_image_directory: /sabayon/images
+
+# Specify image file name (image file name will be automatically
+# produced otherwise)
+image_name: Sabayon_Linux_DAILY_armv7a_Base.img
+
+# External script that will generate the image file.
+# The same can be copied onto a MMC by using dd
+image_generator_script: /sabayon/scripts/mkloopcard.txt
+
+# Specify the image file size in Megabytes. This is mandatory.
+# To avoid runtime failure, make sure the image is large enough to fit your
+# chroot data.
+# Example: 5000 (means: ~5GB)
+# Example: 15000 (means: ~15GB)
+image_mb: 2048
+
+# Directories to remove completely (comma separated)
+# paths_to_remove:
+
+# Directories to empty (comma separated)
+# paths_to_empty:
+
+# Path to source chroot (mandatory)
+source_chroot: /sabayon/sources/armv7l_core-2012
+
+# Path to boot partition data (MLO, u-boot.img etc)
+source_boot_directory: /sabayon/beaglebone/boot
+
+# Release file that will be created onto the root filesystem
+release_file: /etc/sabayon-edition
+
+# Release string (the actual distro name)
+release_string: Sabayon Linux
+
+# Release desc (the actual release description)
+release_desc: armv7a Base
+
+# Release Version (used to generate release_file)
+release_version: 7

scripts/post_mmc_image_script.sh

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+#!/bin/bash
+# Compress the freaking MMC image using xz
+#
+# Available env vars:
+# IMAGE_PATH = path to generated image
+# IMAGE_CHECKSUM_PATH = path to generated md5 for image
+#
+
+/usr/sbin/env-update && source /etc/profile
+
+COMPRESSED_IMAGE_PATH="${IMAGE_PATH}.xz"
+COMPRESSED_IMAGE_CHECKSUM_PATH="${IMAGE_CHECKSUM_PATH}.xz"
+
+echo
+echo "Spawning xz --compress --force for:"
+echo "IMAGE_PATH = ${IMAGE_PATH}"
+echo "COMPRESSED_IMAGE_PATH = ${COMPRESSED_IMAGE_PATH}"
+echo "IMAGE_CHECKSUM_PATH = ${IMAGE_CHECKSUM_PATH}"
+echo
+
+xz --compress --force "${IMAGE_PATH}" || exit 1
+[[ ! -f "${COMPRESSED_IMAGE_PATH}" ]] && { echo "${COMPRESSED_IMAGE_PATH} not found"; exit 1; }
+
+cd "$(dirname "${COMPRESSED_IMAGE_PATH}")" || exit 1
+img_name=$(basename "${COMPRESSED_IMAGE_PATH}")
+md5sum "${img_name}" > "${COMPRESSED_IMAGE_CHECKSUM_PATH}"
+exit ${?}
+