diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt
index 25fce71a6ad..f7e02c9bc0a 100644
--- a/lib/Support/CMakeLists.txt
+++ b/lib/Support/CMakeLists.txt
@@ -35,6 +35,7 @@ add_llvm_library(LLVMSupport
   SystemUtils.cpp
   TargetRegistry.cpp
   Timer.cpp
+  ToolOutputFile.cpp
   Triple.cpp
   Twine.cpp
   raw_os_ostream.cpp