diff --git a/utils/unittest/CMakeLists.txt b/utils/unittest/CMakeLists.txt
index fd1a048d832..569af88d670 100644
--- a/utils/unittest/CMakeLists.txt
+++ b/utils/unittest/CMakeLists.txt
@@ -42,6 +42,4 @@ add_llvm_library(gtest
   googletest/src/gtest-all.cc
   )
 
-add_llvm_library(gtest_main
-  UnitTestMain/TestMain.cpp
-  )
+add_subdirectory(UnitTestMain)
diff --git a/utils/unittest/UnitTestMain/CMakeLists.txt b/utils/unittest/UnitTestMain/CMakeLists.txt
new file mode 100644
index 00000000000..e217d18198f
--- /dev/null
+++ b/utils/unittest/UnitTestMain/CMakeLists.txt
@@ -0,0 +1,3 @@
+add_llvm_library(gtest_main
+  TestMain.cpp
+  )