diff -r 72b657a4e294 -r 7b5d0060108c components/libtool/Makefile
--- a/components/libtool/Makefile	Tue Jun 05 10:38:55 2012 -0700
+++ b/components/libtool/Makefile	Tue Jun 05 10:44:59 2012 -0700
@@ -99,6 +99,7 @@
 
 prep::	$(SOURCE_DIR_1)/.prep
 
+CLEAN_PATHS += $(SOURCE_DIR_1)
 
 # common targets
 build:		$(BUILD_32_and_64)