kconfig: convert Kconfig helper script into a shell script
Commit 51148790 added scripts/multiconfig.py written in Python 2
to adjust Kconfig for U-Boot.
It has been hard for Python 3 users because Python 2 and Python 3
are not compatible with each other.
We are not happy about adding a new host tool dependency
(in this case, Python version dependency) for the core build process.
After some discussion, we decided to use only basic tools.
The script may get a bit more unreadable by shell scripting,
but we believe it is worthwhile.
In addition, this commit revives "<board>_config" target that is
equivalent to "<board>_defconfig" for backwards compatibility.
It is annoying to adjust various projects which use U-Boot.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Suggested-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@ti.com>
Cc: Jeroen Hofstee <jeroen@myspectrum.nl>
Cc: Stephen Warren <swarren@nvidia.com>
diff --git a/scripts/multiconfig.sh b/scripts/multiconfig.sh
new file mode 100644
index 0000000..56cf0c2
--- /dev/null
+++ b/scripts/multiconfig.sh
@@ -0,0 +1,260 @@
+#!/bin/sh
+#
+# A wrapper script to adjust Kconfig for U-Boot
+#
+# Instead of touching various parts under the scripts/kconfig/ directory,
+# pushing necessary adjustments into this single script would be better
+# for code maintainance. All the make targets related to the configuration
+# (make %config) should be invoked via this script.
+# See doc/README.kconfig for further information of Kconfig.
+#
+# Copyright (C) 2014, Masahiro Yamada <yamada.m@jp.panasonic.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+set -e
+
+# Set "DEBUG" enavironment variable to show debug messages
+debug () {
+ if [ $DEBUG ]; then
+ echo "$@"
+ fi
+}
+
+# Useful shorthands
+build () {
+ debug $progname: $MAKE -f $srctree/scripts/Makefile.build obj="$@"
+ $MAKE -f $srctree/scripts/Makefile.build obj="$@"
+}
+
+autoconf () {
+ debug $progname: $MAKE -f $srctree/scripts/Makefile.autoconf obj="$@"
+ $MAKE -f $srctree/scripts/Makefile.autoconf obj="$@"
+}
+
+# Make a configuration target
+# Usage:
+# run_make_config <target> <objdir>
+# <target>: Make target such as "config", "menuconfig", "defconfig", etc.
+# <objdir>: Target directory where the make command is run.
+# Typically "", "spl", "tpl" for Normal, SPL, TPL, respectively.
+run_make_config () {
+ target=$1
+ objdir=$2
+
+ # Linux expects defconfig files in arch/$(SRCARCH)/configs/ directory,
+ # but U-Boot has them in configs/ directory.
+ # Give SRCARCH=.. to fake scripts/kconfig/Makefile.
+ options="SRCARCH=.. KCONFIG_OBJDIR=$objdir"
+ if [ "$objdir" ]; then
+ options="$options KCONFIG_CONFIG=$objdir/$KCONFIG_CONFIG"
+ mkdir -p $objdir
+ fi
+
+ build scripts/kconfig $options $target
+}
+
+# Parse .config file to detect if CONFIG_SPL, CONFIG_TPL is enabled
+# and returns:
+# "" if neither CONFIG_SPL nor CONFIG_TPL is defined
+# "spl" if CONFIG_SPL is defined but CONFIG_TPL is not
+# "spl tpl" if both CONFIG_SPL and CONFIG_TPL are defined
+get_enabled_subimages() {
+ if [ ! -r "$KCONFIG_CONFIG" ]; then
+ # This should never happen
+ echo "$progname: $KCONFIG_CONFIG not found" >&2
+ exit 1
+ fi
+
+ # CONFIG_SPL=y -> spl
+ # CONFIG_TPL=y -> tpl
+ sed -n -e 's/^CONFIG_\(SPL\|TPL\)=y$/\1/p' $KCONFIG_CONFIG | \
+ tr '[A-Z]' '[a-z]'
+}
+
+do_silentoldconfig () {
+ run_make_config silentoldconfig
+ subimages=$(get_enabled_subimages)
+
+ for obj in $subimages
+ do
+ mkdir -p $obj/include/config $obj/include/generated
+ run_make_config silentoldconfig $obj
+ done
+
+ # If the following part fails, include/config/auto.conf should be
+ # deleted so "make silentoldconfig" will be re-run on the next build.
+ autoconf include include/autoconf.mk include/autoconf.mk.dep || {
+ rm -f include/config/auto.conf
+ exit 1
+ }
+
+ # include/config.h has been updated after "make silentoldconfig".
+ # We need to touch include/config/auto.conf so it gets newer
+ # than include/config.h.
+ # Otherwise, 'make silentoldconfig' would be invoked twice.
+ touch include/config/auto.conf
+
+ for obj in $subimages
+ do
+ autoconf $obj/include $obj/include/autoconf.mk || {
+ rm -f include/config/auto.conf
+ exit 1
+ }
+ done
+}
+
+cleanup_after_defconfig () {
+ rm -f configs/.tmp_defconfig
+ # ignore 'Directory not empty' error
+ # without using non-POSIX option '--ignore-fail-on-non-empty'
+ rmdir arch configs 2>/dev/null || true
+}
+
+# Usage:
+# do_board_defconfig <board>_defconfig
+do_board_defconfig () {
+ defconfig_path=$srctree/configs/$1
+ tmp_defconfig_path=configs/.tmp_defconfig
+
+ mkdir -p arch configs
+ # defconfig for Normal:
+ # pick lines without prefixes and lines starting '+' prefix
+ # and rip the prefixes off.
+ sed -n -e '/^[+A-Z]*:/!p' -e 's/^+[A-Z]*://p' $defconfig_path \
+ > configs/.tmp_defconfig
+
+ run_make_config .tmp_defconfig || {
+ cleanup_after_defconfig
+ exit 1
+ }
+
+ for img in $(get_enabled_subimages)
+ do
+ symbol=$(echo $img | cut -c 1 | tr '[a-z]' '[A-Z]')
+ # defconfig for SPL, TPL:
+ # pick lines with 'S', 'T' prefix and rip the prefixes off
+ sed -n -e 's/^[+A-Z]*'$symbol'[A-Z]*://p' $defconfig_path \
+ > configs/.tmp_defconfig
+ run_make_config .tmp_defconfig $img || {
+ cleanup_after_defconfig
+ exit 1
+ }
+ done
+
+ cleanup_after_defconfig
+}
+
+do_defconfig () {
+ if [ "$KBUILD_DEFCONFIG" ]; then
+ do_board_defconfig $KBUILD_DEFCONFIG
+ echo "*** Default configuration is based on '$KBUILD_DEFCONFIG'"
+ else
+ run_make_config defconfig
+ fi
+}
+
+do_savedefconfig () {
+ if [ -r "$KCONFIG_CONFIG" ]; then
+ subimages=$(get_enabled_subimages)
+ else
+ subimages=
+ fi
+
+ run_make_config savedefconfig
+
+ output_lines=
+
+ # -r option is necessay because some string-type configs may include
+ # backslashes as an escape character
+ while read -r line
+ do
+ output_lines="$output_lines $line"
+ done < defconfig
+
+ for img in $subimages
+ do
+ run_make_config savedefconfig $img
+
+ symbol=$(echo $img | cut -c 1 | tr '[a-z]' '[A-Z]')
+ unmatched=
+
+ while read -r line
+ do
+ tmp=
+ match=
+
+ # coalesce common lines together
+ for i in $output_lines
+ do
+ case "$i" in
+ "[+A-Z]*:$line")
+ tmp="$tmp $unmatched"
+ i=$(echo "$i" | \
+ sed -e "s/^\([^:]\)*/\1$symbol/")
+ tmp="$tmp $i"
+ match=1
+ ;;
+ "$line")
+ tmp="$tmp $unmatched"
+ tmp="$tmp +$symbol:$i"
+ match=1
+ ;;
+ *)
+ tmp="$tmp $i"
+ ;;
+ esac
+ done
+
+ if [ "$match" ]; then
+ output_lines="$tmp"
+ unmatched=
+ else
+ unmatched="$unmatched $symbol:$line"
+ fi
+ done < defconfig
+ done
+
+ rm -f defconfig
+ for line in $output_lines
+ do
+ echo $line >> defconfig
+ done
+}
+
+# Usage:
+# do_others <objdir>/<target>
+# The field "<objdir>/" is typically empy, "spl/", "tpl/" for Normal, SPL, TPL,
+# respectively.
+# The field "<target>" is a configuration target such as "config",
+# "menuconfig", etc.
+do_others () {
+ target=${1##*/}
+
+ if [ "$target" = "$1" ]; then
+ objdir=
+ else
+ objdir=${1%/*}
+ fi
+
+ run_make_config $target $objdir
+}
+
+progname=$(basename $0)
+target=$1
+
+case $target in
+*_defconfig)
+ do_board_defconfig $target;;
+*_config)
+ do_board_defconfig ${target%_config}_defconfig;;
+silentoldconfig)
+ do_silentoldconfig;;
+defconfig)
+ do_defconfig;;
+savedefconfig)
+ do_savedefconfig;;
+*)
+ do_others $target;;
+esac