Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

#!/bin/sh

# Find Kconfig variables used in source code but never defined in Kconfig

# Copyright (C) 2007, Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

# 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*[^~]'`"

echo -e "File list \tundefined symbol used"

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_\([0-9A-Z_]\+\).*!\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

                echo -e "$files: \t$symb"

        fi

done|sort