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#!/bin/sh
# Copyright (c) 2016 Google, Inc
# Written by Simon Glass <sjg@chromium.org>
#
# This script creates the configuration whitelist file. This file contains
# all the config options which are allowed to be used outside Kconfig.
# Please do not add things to the whitelist. Instead, add your new option
# to Kconfig.
#
export LC_ALL=C LC_COLLATE=C
# There are two independent greps. The first pulls out the component parts
# of CONFIG_SYS_EXTRA_OPTIONS. An example is:
#
# SUNXI_GMAC,AHCI,SATAPWR=SUNXI_GPB(8)
#
# We want this to produce:
# CONFIG_SUNXI_GMAC
# CONFIG_AHCI
# CONFIG_SATAPWR
#
# The second looks for the rest of the CONFIG options, but excludes those in
# Kconfig and defconfig files.
#
(
git grep CONFIG_SYS_EXTRA_OPTIONS |sed -n \
's/.*CONFIG_SYS_EXTRA_OPTIONS="\(.*\)"/\1/ p' \
| tr , '\n' \
| sed 's/ *\([A-Za-z0-9_]*\).*/CONFIG_\1/'
git grep CONFIG_ | \
egrep -vi "(Kconfig:|defconfig:|README|\.py|\.pl:)" \
| tr ' \t' '\n\n' \
| sed -n 's/^\(CONFIG_[A-Za-z0-9_]*\).*/\1/p'
) \
|sort |uniq >scripts/config_whitelist.txt.tmp1;
# Finally, we need a list of the valid Kconfig options to exclude these from
# the whitelist.
cat `find . -name "Kconfig*"` |sed -n \
-e 's/^config *\([A-Za-z0-9_]*\).*$/CONFIG_\1/p' \
-e 's/^menuconfig *\([A-Za-z0-9_]*\).*$/CONFIG_\1/p' \
|sort |uniq >scripts/config_whitelist.txt.tmp2
# Use only the options that are present in the first file but not the second.
comm -23 scripts/config_whitelist.txt.tmp1 scripts/config_whitelist.txt.tmp2 \
|sort |uniq >scripts/config_whitelist.txt.tmp3
# If scripts/config_whitelist.txt already exists, take the intersection of the
# current list and the new one. We do not want to increase whitelist options.
if [ -r scripts/config_whitelist.txt ]; then
comm -12 scripts/config_whitelist.txt.tmp3 scripts/config_whitelist.txt \
> scripts/config_whitelist.txt.tmp4
mv scripts/config_whitelist.txt.tmp4 scripts/config_whitelist.txt
else
mv scripts/config_whitelist.txt.tmp3 scripts/config_whitelist.txt
fi
rm scripts/config_whitelist.txt.tmp*
unset LC_ALL LC_COLLATE