diff --git a/configure.py b/configure.py
index afaf6d738a7f9b..b67ad1f06f4e43 100755
--- a/configure.py
+++ b/configure.py
@@ -794,7 +794,7 @@ def get_nasm_version(asm):
 
 def get_llvm_version(cc):
   return get_version_helper(
-    cc, r"(^(?:FreeBSD )?clang version|based on LLVM) ([0-9]+\.[0-9]+)")
+    cc, r"(^(?:.+ )?clang version|based on LLVM) ([0-9]+\.[0-9]+)")
 
 def get_xcode_version(cc):
   return get_version_helper(