Index: tools/libclang/CMakeLists.txt
===================================================================
--- tools/libclang/CMakeLists.txt
+++ tools/libclang/CMakeLists.txt
@@ -141,6 +141,9 @@
   PATTERN ".svn" EXCLUDE
   )
 
+# Add dummy target to placate LLVM_DISTRIBUTION_COMPONENTS.
+add_custom_target(libclang-headers)
+
 if (NOT CMAKE_CONFIGURATION_TYPES) # don't add this for IDE's.
   add_custom_target(install-libclang-headers
     DEPENDS