1 files changed, 5 insertions, 0 deletions
diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index 7701af1b3..764a59b9a 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -727,6 +727,11 @@ dyn_unpack() {
 }
 
 dyn_clean() {
+	if [ -z "${PORTAGE_BUILDDIR}" ]; then
+		echo "Aborting clean phase because PORTAGE_BUILDDIR is unset!"
+		return 1
+	fi
+
 	if [ "$USERLAND" == "BSD" ] && type -p chflags &>/dev/null; then
 		chflags -R noschg,nouchg,nosappnd,nouappnd,nosunlnk,nouunlnk \
 			"${PORTAGE_BUILDDIR}"