diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index bb3182837f7..7c8ce706b61 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -26,5 +26,6 @@ add_llvm_library(LLVMSupport
   StringPool.cpp
   SystemUtils.cpp
   Timer.cpp
+  Triple.cpp
   raw_ostream.cpp
   )