Index: scripts/Xcode/build-llvm.py
===================================================================
--- scripts/Xcode/build-llvm.py
+++ scripts/Xcode/build-llvm.py
@@ -5,6 +5,7 @@
 import fnmatch
 import os
 import platform
+import re
 import subprocess
 import sys
 
@@ -132,7 +133,9 @@
 
 def collect_archives_in_path (path): 
     files = os.listdir(path)
-    return [os.path.join(path, file) for file in files if file.endswith(".a")]
+    # Only use libclang and libLLVM archives, and exclude libclang_rt
+    regexp = "^lib(clang[^_]|LLVM).*$"
+    return [os.path.join(path, file) for file in files if file.endswith(".a") and re.match(regexp, file)]
 
 def archive_list ():
     paths = library_paths()