diff --git a/lldb/CMakeLists.txt b/lldb/CMakeLists.txt
--- a/lldb/CMakeLists.txt
+++ b/lldb/CMakeLists.txt
@@ -124,10 +124,31 @@
   finish_swig_lua("lldb-lua" "${lldb_lua_bindings_dir}" "${lldb_lua_target_dir}")
 endif()
 
+if (LLDB_BUILT_STANDALONE)
+  # Build the gtest library needed for unittests, if we have LLVM sources
+  # handy.
+  if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest AND NOT TARGET llvm_gtest)
+    add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/unittest utils/unittest)
+  endif()
+  # LLVMTestingSupport library is needed for Process/gdb-remote.
+  if (EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      AND NOT TARGET LLVMTestingSupport)
+    add_subdirectory(${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
+      lib/Testing/Support)
+  endif()
+endif()
+
+set(LLDB_INCLUDE_UNITTESTS ON)
+if (NOT TARGET llvm_gtest)
+  set(LLDB_INCLUDE_UNITTESTS OFF)
+endif()
+
 option(LLDB_INCLUDE_TESTS "Generate build targets for the LLDB unit tests." ${LLVM_INCLUDE_TESTS})
 if(LLDB_INCLUDE_TESTS)
   add_subdirectory(test)
-  add_subdirectory(unittests)
+  if (LLDB_INCLUDE_UNITTESTS)
+    add_subdirectory(unittests)
+  endif()
   add_subdirectory(utils)
 endif()
 
diff --git a/lldb/unittests/CMakeLists.txt b/lldb/unittests/CMakeLists.txt
--- a/lldb/unittests/CMakeLists.txt
+++ b/lldb/unittests/CMakeLists.txt
@@ -17,20 +17,6 @@
   list(APPEND LLVM_COMPILE_FLAGS -include ${LLDB_GTEST_COMMON_INCLUDE})
 endif ()
 
-if (LLDB_BUILT_STANDALONE)
-  # Build the gtest library needed for unittests, if we have LLVM sources
-  # handy.
-  if (EXISTS ${LLVM_MAIN_SRC_DIR}/utils/unittest AND NOT TARGET llvm_gtest)
-    add_subdirectory(${LLVM_MAIN_SRC_DIR}/utils/unittest utils/unittest)
-  endif()
-  # LLVMTestingSupport library is needed for Process/gdb-remote.
-  if (EXISTS ${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
-      AND NOT TARGET LLVMTestingSupport)
-    add_subdirectory(${LLVM_MAIN_SRC_DIR}/lib/Testing/Support
-      lib/Testing/Support)
-  endif()
-endif()
-
 function(add_lldb_unittest test_name)
   cmake_parse_arguments(ARG
     ""