diff --git a/macros b/macros
index 16caca9..5515620 100644
--- a/macros
+++ b/macros
@@ -73,6 +73,17 @@
 #==============================================================================
 # ---- Build policy macros.
 #
+#
+#---------------------------------------------------------------------
+#	Expanded at beginning of %install scriptlet.
+#
+
+%__spec_install_pre %{___build_pre}\
+    [ "$RPM_BUILD_ROOT" != "/" ] && rm -rf "${RPM_BUILD_ROOT}"\
+    mkdir -p `dirname "$RPM_BUILD_ROOT"`\
+    mkdir "$RPM_BUILD_ROOT"\
+%{nil}
+
 #---------------------------------------------------------------------
 #	Expanded at end of %install scriptlet.
 #