--- a/Makefile.orig	2012-01-22 19:39:46.000000000 -0800
+++ b/Makefile	2012-01-22 19:40:29.000000000 -0800
@@ -68,8 +68,9 @@ endif
 
 ifeq ($(MAKECMDGOALS),install-clang)
   DIRS := tools/clang/tools/driver tools/clang/lib/Headers \
-          tools/clang/runtime tools/clang/docs \
-          tools/lto
+          tools/clang/tools/libclang tools/clang/tools/c-index-test \
+          tools/clang/include/clang-c \
+          tools/clang/runtime tools/clang/docs
   OPTIONAL_DIRS :=
   NO_INSTALL = 1
 endif
