Index: tools/clang-format/Makefile
===================================================================
--- tools/clang-format/Makefile	(revision 198062)
+++ tools/clang-format/Makefile	(working copy)
@@ -22,3 +22,8 @@
            clangLex.a clangBasic.a 
 
 include $(CLANG_LEVEL)/Makefile
+
+# Strip dead symbols.
+ifeq ($(HOST_OS),Darwin)
+    LLVMLibsOptions += -Wl,-dead_strip
+endif