diff --git a/crossdev b/crossdev
index f989556..b208931 100755
--- a/crossdev
+++ b/crossdev
@@ -12,9 +12,9 @@ if [[ ${ROOT:-/} != "/" ]] ; then
 	exit 2
 fi
 
-CONFIGROOT="${PORTAGE_CONFIGROOT}/etc/portage"
+CONFIGROOT="@GENTOO_PORTAGE_EPREFIX@${PORTAGE_CONFIGROOT}/etc/portage"
 
-source /etc/init.d/functions.sh || exit 1
+source @GENTOO_PORTAGE_EPREFIX@/etc/init.d/functions.sh || exit 1
 esyslog() { :; }
 die_logs() {
 	echo
@@ -316,7 +316,7 @@ setup_portage_vars() {
 	CROSSDEV_OVERLAY=${CROSSDEV_OVERLAY%% *}
 
 	# make sure we have a valid logdir
-	: ${PORT_LOGDIR:=/var/log/portage}
+	: ${PORT_LOGDIR:=@GENTOO_PORTAGE_EPREFIX@/var/log/portage}
 	mkdir -p "${PORT_LOGDIR}"
 }
 
@@ -337,13 +337,13 @@ uninstall() {
 	done
 	rm -rf "${CONFIGROOT}"/env/cross-${CTARGET}
 	rmdir "${CONFIGROOT}"/env 2>/dev/null
-	rm -f /etc/revdep-rebuild/05cross-${CTARGET}
-	rmdir /etc/revdep-rebuild 2>/dev/null
+	rm -f @GENTOO_PORTAGE_EPREFIX@/etc/revdep-rebuild/05cross-${CTARGET}
+	rmdir @GENTOO_PORTAGE_EPREFIX@/etc/revdep-rebuild 2>/dev/null
 
-	rmdir /var/db/pkg/cross-${CTARGET} 2>/dev/null
-	if [[ -d /var/db/pkg/cross-${CTARGET} ]] ; then
+	rmdir @GENTOO_PORTAGE_EPREFIX@/var/db/pkg/cross-${CTARGET} 2>/dev/null
+	if [[ -d @GENTOO_PORTAGE_EPREFIX@/var/db/pkg/cross-${CTARGET} ]] ; then
 		export CLEAN_DELAY=0
-		cd /var/db/pkg
+		cd @GENTOO_PORTAGE_EPREFIX@/var/db/pkg
 		local pkgs=( cross-${CTARGET}/* )
 		emerge -qC ${pkgs[@]/#/=} || exit 1
 	else
@@ -356,29 +356,29 @@ uninstall() {
 		gcc-{ar,nm,ranlib} gccbug gprof ld nm objcopy objdump \
 		ranlib readelf size strings strip windmc windres
 	do
-		rm -f /usr/bin/${CTARGET}-${f} /usr/${CTARGET}/bin/${f}
+		rm -f @GENTOO_PORTAGE_EPREFIX@/usr/bin/${CTARGET}-${f} @GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}/bin/${f}
 	done
-	rm -f /usr/${CTARGET}/{sys-include,usr}
-	rmdir /usr/${CTARGET}/{include/asm,include} 2>/dev/null
-	rm -f /usr/bin/${CTARGET}-{gcc,{c,g}++,cpp,gfortran,gcov}
-	rm -f /etc/env.d/{binutils,gcc}/config-${CTARGET}
+	rm -f @GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}/{sys-include,usr}
+	rmdir @GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}/{include/asm,include} 2>/dev/null
+	rm -f @GENTOO_PORTAGE_EPREFIX@/usr/bin/${CTARGET}-{gcc,{c,g}++,cpp,gfortran,gcov}
+	rm -f @GENTOO_PORTAGE_EPREFIX@/etc/env.d/{binutils,gcc}/config-${CTARGET}
 
 	# clean out files from crossdev itself
-	[[ -e /var/db/pkg/cross-${CTARGET} ]] && rmdir /var/db/pkg/cross-${CTARGET}
-	rm -f /usr/bin/${CTARGET}-{emerge,fix-root,pkg-config} /usr/bin/emerge-${CTARGET}
+	[[ -e @GENTOO_PORTAGE_EPREFIX@/var/db/pkg/cross-${CTARGET} ]] && rmdir @GENTOO_PORTAGE_EPREFIX@/var/db/pkg/cross-${CTARGET}
+	rm -f @GENTOO_PORTAGE_EPREFIX@/usr/bin/${CTARGET}-{emerge,fix-root,pkg-config} @GENTOO_PORTAGE_EPREFIX@/usr/bin/emerge-${CTARGET}
 
 	for f in make.{conf,globals,profile} ; do
-		f="/usr/${CTARGET}/etc/${f}"
+		f="@GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}/etc/${f}"
 		[[ -L ${f} ]] && rm -f ${f}
-		f="/usr/${CTARGET}/etc/portage/${f##*/}"
+		f="@GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}/etc/portage/${f##*/}"
 		[[ -L ${f} ]] && rm -f ${f}
 	done
-	find /usr/share/crossdev/etc/ -type f | \
+	find @GENTOO_PORTAGE_EPREFIX@/usr/share/crossdev/etc/ -type f | \
 	while read f ; do
 		f1=${f}
 		[[ ! -e ${f1} ]] && continue
 		m1=$(set -- `md5sum ${f1}`; echo $1)
-		f2=/usr/${CTARGET}${f#/usr/share/crossdev}
+		f2=@GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}${f#/usr/share/crossdev}
 		[[ ! -e ${f2} ]] && continue
 		m2=$(set -- `md5sum ${f2}`; echo $1)
 		if [[ ${m1} == ${m2} ]] ; then
@@ -387,7 +387,8 @@ uninstall() {
 	done
 
 	# clean out the sysroot, prompting the user if need be
-	for d in /usr/lib/gcc{,-lib}/${CTARGET} /usr/${CTARGET} ; do
+	for d in @GENTOO_PORTAGE_EPREFIX@/usr/lib/gcc{,-lib}/${CTARGET} \
+			@GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET} ; do
 		if [[ ! -d ${d} ]] ; then
 			rm -f "${d}"
 		else
@@ -846,7 +847,7 @@ set_env() {
 	output="env/cross-${CTARGET}/${pkg}.conf"
 	cat <<-EOF > "${output}"
 	SYMLINK_LIB=no
-	COLLISION_IGNORE="\${COLLISION_IGNORE} /usr/lib/debug/.build-id"
+	COLLISION_IGNORE="\${COLLISION_IGNORE} @GENTOO_PORTAGE_EPREFIX@/usr/lib/debug/.build-id"
 	$(printf '%b' "${env}")
 	$(printf '%b' "${AENV}")
 	EOF
@@ -987,21 +988,21 @@ done
 set_metadata
 
 # filter out revdep rebuild stuff #182601
-mkdir -p /etc/revdep-rebuild
-echo "SEARCH_DIRS_MASK=/usr/${CTARGET}" > /etc/revdep-rebuild/05cross-${CTARGET}
+mkdir -p @GENTOO_PORTAGE_EPREFIX@/etc/revdep-rebuild
+echo "SEARCH_DIRS_MASK=@GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}" > @GENTOO_PORTAGE_EPREFIX@/etc/revdep-rebuild/05cross-${CTARGET}
 
 hr
 
 #######################################
 ### Create links for helper scripts ###
 
-mkdir -p /usr/${CTARGET}
+mkdir -p @GENTOO_PORTAGE_EPREFIX@/usr/${CTARGET}
 emerge-wrapper --target ${CTARGET} --init || exit 1
 
 #################
 emerged_with_use() {
 	local pkg=$1 use=$2
-	grep -qs ${use} /var/db/pkg/cross-${CTARGET}/${pkg}-*/USE
+	grep -qs ${use} @GENTOO_PORTAGE_EPREFIX@/var/db/pkg/cross-${CTARGET}/${pkg}-*/USE
 }
 set_eopts_on_pkg_status() {
 	emerged_with_use "$@" \
diff --git a/wrappers/cross-pkg-config b/wrappers/cross-pkg-config
index 37f3690..b838bf5 100755
--- a/wrappers/cross-pkg-config
+++ b/wrappers/cross-pkg-config
@@ -57,7 +57,7 @@ if [ -z "${SYSROOT}" ] ; then
 		# /usr/<target>
 		CHOST=${0##*/}
 		CHOST=${CHOST%-pkg-config}
-		SYSROOT="/usr/${CHOST}"
+		SYSROOT="@GENTOO_PORTAGE_EPREFIX@/usr/${CHOST}"
 		if [ -z "${CHOST}" ] || [ ! -d "${SYSROOT}" ] ; then
 			error "Need \$ROOT or \$STAGEDIR set first"
 		fi
diff --git a/wrappers/etc/portage/make.conf b/wrappers/etc/portage/make.conf
index 82e489b..8dc5372 100644
--- a/wrappers/etc/portage/make.conf
+++ b/wrappers/etc/portage/make.conf
@@ -5,7 +5,7 @@ ARCH=__ARCH__
 HOSTCC=__CBUILD__-gcc
 E_MACHINE=__E_MACHINE__
 
-ROOT=/usr/${CHOST}/
+ROOT=@GENTOO_PORTAGE_EPREFIX@/usr/${CHOST}/
 
 ACCEPT_KEYWORDS="__ARCH__ ~__ARCH__"