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#!/bin/sh
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# Copyright (c) 2016 Google, Inc
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# Written by Simon Glass <sjg@chromium.org>
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#
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# Check that the u-boot.cfg file provided does not introduce any new
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# ad-hoc CONFIG options
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#
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# Use scripts/build-whitelist.sh to generate the list of current ad-hoc
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# CONFIG options (those which are not in Kconfig).
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# Usage
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# check-config.sh <path to u-boot.cfg> <path to whitelist file> <source dir>
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#
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# For example:
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# scripts/check-config.sh b/chromebook_link/u-boot.cfg kconfig_whitelist.txt .
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set -e
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set -u
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path="$1"
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whitelist="$2"
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srctree="$3"
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# Temporary files
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configs="${path}.configs"
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suspects="${path}.suspects"
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ok="${path}.ok"
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new_adhoc="${path}.adhoc"
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export LC_ALL=C
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export LC_COLLATE=C
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cat ${path} |sed -n 's/^#define \(CONFIG_[A-Za-z0-9_]*\).*/\1/p' |sort |uniq \
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>${configs}
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comm -23 ${configs} ${whitelist} > ${suspects}
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cat `find ${srctree} -name "Kconfig*"` |sed -n \
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-e 's/^\s*config *\([A-Za-z0-9_]*\).*$/CONFIG_\1/p' \
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-e 's/^\s*menuconfig \([A-Za-z0-9_]*\).*$/CONFIG_\1/p' \
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|sort |uniq > ${ok}
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comm -23 ${suspects} ${ok} >${new_adhoc}
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if [ -s ${new_adhoc} ]; then
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echo >&2 "Error: You must add new CONFIG options using Kconfig"
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echo >&2 "The following new ad-hoc CONFIG options were detected:"
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cat >&2 ${new_adhoc}
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echo >&2
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echo >&2 "Please add these via Kconfig instead. Find a suitable Kconfig"
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echo >&2 "file and add a 'config' or 'menuconfig' option."
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# Don't delete the temporary files in case they are useful
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exit 1
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else
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rm ${suspects} ${ok} ${new_adhoc}
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fi
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