Don't add examples to the check-clang dependencies unless requested

The tests were correctly getting skipped but the targets still mistakenly got
built.

llvm-svn: 209983
diff --git a/clang/test/CMakeLists.txt b/clang/test/CMakeLists.txt
index 66a8cab..fe80df4 100644
--- a/clang/test/CMakeLists.txt
+++ b/clang/test/CMakeLists.txt
@@ -29,10 +29,16 @@
   c-index-test diagtool arcmt-test c-arcmt-test
   clang-check clang-format
   clang-tblgen
-  clang-interpreter
-  PrintFunctionNames
-  SampleAnalyzerPlugin
   )
+
+if (ENABLE_CLANG_EXAMPLES)
+  list(APPEND CLANG_TEST_DEPS
+    clang-interpreter
+    PrintFunctionNames
+    SampleAnalyzerPlugin
+    )
+endif ()
+
 set(CLANG_TEST_PARAMS
   clang_site_config=${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
   )