Unbreak cmake build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116003 91177308-0d34-0410-b5e6-96231b3b80d8

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