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