--- ./lddtree.sh.orig	2014-03-18 13:38:57.284756931 +0100
+++ ./lddtree.sh	2014-03-18 13:22:47.296407170 +0100
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # Copyright 2007-2013 Gentoo Foundation
 # Copyright 2007-2013 Mike Frysinger <vapier@gentoo.org>
 # Distributed under the terms of the GNU General Public License v2
@@ -7,8 +7,9 @@
 argv0=${0##*/}
 
 : ${ROOT:=/}
-[[ ${ROOT} != */ ]] && ROOT="${ROOT}/"
-[[ ${ROOT} != /* ]] && ROOT="${PWD}${ROOT}"
+
+[ "${ROOT}" = "${ROOT%/}" ] && ROOT="${ROOT}/"
+[ "${ROOT}" = "${ROOT#/}" ] && ROOT="${PWD}/${ROOT}"
 
 usage() {
 	cat <<-EOF
@@ -54,7 +55,7 @@
 	_find_elf=''
 
 	local elf=$1 needed_by=$2
-	if [[ ${elf} == */* ]] && [[ -e ${elf} ]] ; then
+	if [ "${elf}" != "${elf##*/}" ] && [ -e "${elf}" ] ; then
 		_find_elf=${elf}
 		return 0
 	else
@@ -63,8 +64,8 @@
 			local path pe
 			for path ; do
 				pe="${path%/}/${elf#/}"
-				if [[ -e ${pe} ]] ; then
-					if [[ $(elf_specs "${pe}") == "${elf_specs}" ]] ; then
+				if [ -e "${pe}" ] ; then
+					if [ "$(elf_specs "${pe}")" = "${elf_specs}" ] ; then
 						_find_elf=${pe}
 						return 0
 					fi
@@ -73,52 +74,53 @@
 			return 1
 		}
 
-		if [[ ${c_last_needed_by} != ${needed_by} ]] ; then
-			c_last_needed_by=${needed_by}
+		if [ "${c_last_needed_by}" != "${needed_by}" ] ; then
+			c_last_needed_by="${needed_by}"
 			c_last_needed_by_rpaths=$(scanelf -qF '#F%r' "${needed_by}" | \
 				sed -e 's|:| |g' -e "s:[$]ORIGIN:${needed_by%/*}:")
 		fi
 		check_paths "${elf}" ${c_last_needed_by_rpaths} && return 0
 
-		if [[ -n ${LD_LIBRARY_PATH} ]] ; then
+		if [ -n "${LD_LIBRARY_PATH}" ] ; then
 			# Need to handle empty paths as $PWD,
 			# and handle spaces in between the colons
 			local p path=${LD_LIBRARY_PATH}
 			while : ; do
 				p=${path%%:*}
 				check_paths "${elf}" "${p:-${PWD}}" && return 0
-				[[ ${path} == *:* ]] || break
+				[ "${path}" = "${path#*:}" ] && break
 				path=${path#*:}
 			done
 		fi
 
 		if ! ${c_ldso_paths_loaded} ; then
 			c_ldso_paths_loaded='true'
-			c_ldso_paths=()
-			if [[ -r ${ROOT}etc/ld.so.conf ]] ; then
+			c_ldso_paths=
+			if [ -r ${ROOT}etc/ld.so.conf ] ; then
 				read_ldso_conf() {
 					local line p
 					for p ; do
 						# if the glob didnt match anything #360041,
 						# or the files arent readable, skip it
-						[[ -r ${p} ]] || continue
+						[ -r "${p}" ] || continue
 						while read line ; do
 							case ${line} in
 								"#"*) ;;
 								"include "*) read_ldso_conf ${line#* } ;;
-								*) c_ldso_paths+=( "${ROOT}${line#/}" ) ;;
+								*) c_ldso_paths="$c_ldso_paths:${ROOT}${line#/}";;
 							esac
 						done <"${p}"
 					done
 				}
 				# the 'include' command is relative
-				pushd "${ROOT}"etc >/dev/null
+				local _oldpwd="$PWD"
+				cd "$ROOT"etc >/dev/null
 				read_ldso_conf "${ROOT}"etc/ld.so.conf
-				popd >/dev/null
+				cd "$_oldpwd"
 			fi
 		fi
-		if [[ ${#c_ldso_paths[@]} -gt 0 ]] ; then
-			check_paths "${elf}" "${c_ldso_paths[@]}" && return 0
+		if [ -n "${c_ldso_paths}" ] ; then
+			check_paths "${elf}" ${c_ldso_paths//:/ } && return 0
 		fi
 
 		check_paths "${elf}" ${lib_paths_ldso:-${lib_paths_fallback}} && return 0
@@ -135,27 +137,29 @@
 	elf=${elf##*/}
 
 	${LIST} || printf "%${indent}s%s => " "" "${elf}"
-	if [[ ,${parent_elfs}, == *,${elf},* ]] ; then
+	case ",${parent_elfs}," in
+	*,${elf},*)
 		${LIST} || printf "!!! circular loop !!!\n" ""
 		return
-	fi
+		;;
+	esac
 	parent_elfs="${parent_elfs},${elf}"
 	if ${LIST} ; then
 		echo "${resolved:-$1}"
 	else
 		printf "${resolved:-not found}"
 	fi
-	if [[ ${indent} -eq 0 ]] ; then
+	if [ ${indent} -eq 0 ] ; then
 		elf_specs=$(elf_specs "${resolved}")
 		interp=$(scanelf -qF '#F%i' "${resolved}")
-		[[ -n ${interp} ]] && interp="${ROOT}${interp#/}"
+		[ -n "${interp}" ] && interp="${ROOT}${interp#/}"
 
 		if ${LIST} ; then
-			[[ -n ${interp} ]] && echo "${interp}"
+			[ -n "${interp}" ] && echo "${interp}"
 		else
 			printf " (interpreter => ${interp:-none})"
 		fi
-		if [[ -r ${interp} ]] ; then
+		if [ -r "${interp}" ] ; then
 			# Extract the default lib paths out of the ldso.
 			lib_paths_ldso=$(
 				strings "${interp}" | \
@@ -166,7 +170,7 @@
 	fi
 	${LIST} || printf "\n"
 
-	[[ -z ${resolved} ]] && return
+	[ -z "${resolved}" ] && return
 
 	libs=$(scanelf -qF '#F%n' "${resolved}")
 
@@ -178,16 +182,15 @@
 
 	for lib in ${libs//,/ } ; do
 		lib=${lib##*/}
-		[[ ,${my_allhits}, == *,${lib},* ]] && continue
+		case ",${my_allhits}," in
+			*,${lib},*) continue;;
+		esac
 		find_elf "${lib}" "${resolved}"
 		rlib=${_find_elf}
 		show_elf "${rlib:-${lib}}" $((indent + 4)) "${parent_elfs}"
 	done
 }
 
-# XXX: internal hack
-if [[ $1 != "/../..source.lddtree" ]] ; then
-
 SHOW_ALL=false
 SET_X=false
 LIST=false
@@ -210,8 +213,8 @@
 	?) usage 1;;
 	esac
 done
-shift $((OPTIND - 1))
-[[ -z $1 ]] && usage 1
+shift $(( $OPTIND - 1))
+[ -z "$1" ] && usage 1
 
 ${SET_X} && set -x
 
@@ -219,21 +222,20 @@
 for elf ; do
 	unset lib_paths_ldso
 	unset c_last_needed_by
-	if ${AUTO_ROOT} && [[ ${elf} == /* ]] ; then
+	if ${AUTO_ROOT} && [ -z "${elf##/*}" ] ; then
 		elf="${ROOT}${elf#/}"
 	fi
-	if [[ ! -e ${elf} ]] ; then
+	if [ ! -e "${elf}" ] ; then
 		error "${elf}: file does not exist"
-	elif [[ ! -r ${elf} ]] ; then
+	elif [ ! -r "${elf}" ] ; then
 		error "${elf}: file is not readable"
-	elif [[ -d ${elf} ]] ; then
+	elif [ -d "${elf}" ] ; then
 		error "${elf}: is a directory"
 	else
 		allhits=""
-		[[ ${elf} != */* ]] && elf="./${elf}"
+		[ "${elf##*/*}" = "${elf}" ] && elf="./${elf}"
 		show_elf "${elf}" 0 ""
 	fi
 done
 exit ${ret}
 
-fi