diff --git a/lib/System/CMakeLists.txt b/lib/System/CMakeLists.txt
index 9ac663e84fe..31baf356bb0 100644
--- a/lib/System/CMakeLists.txt
+++ b/lib/System/CMakeLists.txt
@@ -2,6 +2,7 @@ add_llvm_library(LLVMSystem
   Alarm.cpp
   Disassembler.cpp
   DynamicLibrary.cpp
+  Host.cpp
   IncludeFile.cpp
   Memory.cpp
   Mutex.cpp