[linux.git] / scripts / checkkconfigsymbols.sh

#!/bin/sh
# Find Kconfig variables used in source code but never defined in Kconfig
# Copyright (C) 2007, Paolo 'Blaisorblade' Giarrusso <[email protected]>

# Tested with dash.
paths="$@"
[ -z "$paths" ] && paths=.

# Doing this once at the beginning saves a lot of time, on a cache-hot tree.
Kconfigs="`find . -name 'Kconfig' -o -name 'Kconfig*[^~]'`"

printf "File list \tundefined symbol used\n"
find $paths -name '*.[chS]' -o -name 'Makefile' -o -name 'Makefile*[^~]'| while read i
do
	# Output the bare Kconfig variable and the filename; the _MODULE part at
	# the end is not removed here (would need perl an not-hungry regexp for that).
	sed -ne 's!^.*\<\(UML_\)\?CONFIG_\([0-9A-Za-z_]\+\).*!\2 '$i'!p' < $i
done | \
# Smart "sort|uniq" implemented in awk and tuned to collect the names of all
# files which use a given symbol
awk '{map[$1, count[$1]++] = $2; }
END {
	for (combIdx in map) {
		split(combIdx, separate, SUBSEP);
		# The value may have been removed.
		if (! ( (separate[1], separate[2]) in map ) )
			continue;
		symb=separate[1];
		printf "%s ", symb;
		#Use gawk extension to delete the names vector
		delete names;
		#Portably delete the names vector
		#split("", names);
		for (i=0; i < count[symb]; i++) {
			names[map[symb, i]] = 1;
			# Unfortunately, we may still encounter symb, i in the
			# outside iteration.
			delete map[symb, i];
		}
		i=0;
		for (name in names) {
			if (i > 0)
				printf ", %s", name;
			else
				printf "%s", name;
			i++;
		}
		printf "\n";
	}
}' |
while read symb files; do
	# Remove the _MODULE suffix when checking the variable name. This should
	# be done only on tristate symbols, actually, but Kconfig parsing is
	# beyond the purpose of this script.
	symb_bare=`echo $symb | sed -e 's/_MODULE//'`
	if ! grep -q "\<$symb_bare\>" $Kconfigs; then
		printf "$files: \t$symb\n"
	fi
done|sort
Commit	Line	Data
0bce6735 PBG	1	#!/bin/sh
	2	# Find Kconfig variables used in source code but never defined in Kconfig
	3	# Copyright (C) 2007, Paolo 'Blaisorblade' Giarrusso <[email protected]>
	4
	5	# Tested with dash.
	6	paths="$@"
	7	[ -z "$paths" ] && paths=.
	8
	9	# Doing this once at the beginning saves a lot of time, on a cache-hot tree.
	10	Kconfigs="`find . -name 'Kconfig' -o -name 'Kconfig*[^~]'`"
	11
36b5401b	12	printf "File list \tundefined symbol used\n"
0bce6735 PBG	13	find $paths -name '.[chS]' -o -name 'Makefile' -o -name 'Makefile[^~]'\| while read i
	14	do
	15	# Output the bare Kconfig variable and the filename; the _MODULE part at
	16	# the end is not removed here (would need perl an not-hungry regexp for that).
03b550d3	17	sed -ne 's!^.\<\(UML_\)\?CONFIG_\([0-9A-Za-z_]\+\).!\2 '$i'!p' < $i
0bce6735 PBG	18	done \| \
	19	# Smart "sort\|uniq" implemented in awk and tuned to collect the names of all
	20	# files which use a given symbol
	21	awk '{map[$1, count[$1]++] = $2; }
	22	END {
	23	for (combIdx in map) {
	24	split(combIdx, separate, SUBSEP);
	25	# The value may have been removed.
	26	if (! ( (separate[1], separate[2]) in map ) )
	27	continue;
	28	symb=separate[1];
	29	printf "%s ", symb;
	30	#Use gawk extension to delete the names vector
	31	delete names;
	32	#Portably delete the names vector
	33	#split("", names);
	34	for (i=0; i < count[symb]; i++) {
	35	names[map[symb, i]] = 1;
	36	# Unfortunately, we may still encounter symb, i in the
	37	# outside iteration.
	38	delete map[symb, i];
	39	}
	40	i=0;
	41	for (name in names) {
	42	if (i > 0)
	43	printf ", %s", name;
	44	else
	45	printf "%s", name;
	46	i++;
	47	}
	48	printf "\n";
	49	}
	50	}' \|
	51	while read symb files; do
	52	# Remove the _MODULE suffix when checking the variable name. This should
	53	# be done only on tristate symbols, actually, but Kconfig parsing is
	54	# beyond the purpose of this script.
	55	symb_bare=`echo $symb \| sed -e 's/_MODULE//'`
	56	if ! grep -q "\<$symb_bare\>" $Kconfigs; then
36b5401b	57	printf "$files: \t$symb\n"
0bce6735 PBG	58	fi
0bce6735 PBG	59	done\|sort