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Makefile: Give a build error if ad-hoc CONFIG options are added

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New CONFIG options should be added via Kconfig. To help prevent new ad-hoc
CONFIGs from being added, give a build error when these are detected.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Simon Glass 2016-09-13 21:44:07 -06:00 committed by Tom Rini
parent eed921d923
commit 371244cb19
2 changed files with 64 additions and 1 deletions
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10
Makefile
View File

@ -740,7 +740,8 @@ DO_STATIC_RELA =
endif
# Always append ALL so that arch config.mk's can add custom ones
ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map u-boot.cfg binary_size_check
ALL-y += u-boot.srec u-boot.bin u-boot.sym System.map u-boot.cfg \
binary_size_check no_new_adhoc_configs_check
ALL-$(CONFIG_ONENAND_U_BOOT) += u-boot-onenand.bin
ifeq ($(CONFIG_SPL_FSL_PBL),y)
@ -938,6 +939,13 @@ u-boot.dis: u-boot
u-boot.cfg: include/config.h FORCE
$(call if_changed,cpp_cfg)
# Check that this build does not use CONFIG options that we don't know about
# unless they are in Kconfig. All the existing CONFIG options are whitelisted,
# so new ones should not be added.
no_new_adhoc_configs_check: u-boot.cfg FORCE
$(srctree)/scripts/check-config.sh $< \
$(srctree)/scripts/config_whitelist.txt ${srctree} 1>&2
ifdef CONFIG_TPL
SPL_PAYLOAD := tpl/u-boot-with-tpl.bin
else

55
scripts/check-config.sh Executable file
View File

@ -0,0 +1,55 @@
#!/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
#
# You can generate the list of current ad-hoc CONFIG options (those which are
# not in Kconfig) with this command:
#
# export LC_ALL=C LC_COLLATE=C
# git grep CONFIG_ |tr ' \t' '\n\n' |sed -n 's/^\(CONFIG_[A-Z0-9_]*\).*/\1/p' \
# |sort |uniq >scripts/config_whitelist.txt;
# unset LC_ALL LC_COLLATE
# 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 .
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/^config *\([A-Za-z0-9_]*\).*$/CONFIG_\1/p' \
-e 's/^menuconfig \([A-Za-z0-9_]*\).*$/CONFIG_\1/p' |sort |uniq > ${ok}
comm -23 ${suspects} ${ok} >${new_adhoc}
if [ -s ${new_adhoc} ]; then
echo "Error: You must add new CONFIG options using Kconfig"
echo "The following new ad-hoc CONFIG options were detected:"
cat ${new_adhoc}
echo
echo "Please add these via Kconfig instead. Find a suitable Kconfig"
echo "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