openwrt/scripts/gen-dependencies.sh

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#!/bin/sh
#
# Copyright (C) 2012 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
SELF=${0##*/}
READELF="${READELF:-readelf}"
OBJCOPY="${OBJCOPY:-objcopy}"
TARGETS=$*
XARGS="${XARGS:-xargs -r}"
[ -z "$TARGETS" ] && {
echo "$SELF: no directories / files specified"
echo "usage: $SELF [PATH...]"
exit 1
}
find $TARGETS -type f -a -exec file {} \; | \
sed -n -e 's/^\(.*\):.*ELF.*\(executable\|shared object\).*,.*/\1/p' | \
$XARGS -n1 $READELF -d | \
awk '$2 ~ /NEEDED/ && $NF !~ /interpreter/ && $NF ~ /^\[?lib.*\.so/ { gsub(/[\[\]]/, "", $NF); print $NF }' | \
sort -u
tmp=$(mktemp $TMP_DIR/dep.XXXXXXXX)
for kmod in $(find $TARGETS -type f -name \*.ko); do
$OBJCOPY -O binary -j .modinfo $kmod $tmp
sed -e 's,\x00,\n,g' $tmp | \
sed -ne '/^depends=.\+/ { s/^depends=//; s/,/.ko\n/g; s/$/.ko/p; q }'
done | sort -u
rm -f $tmp