fix tuner_test

mace/utils/BUILD

@@ -64,7 +64,7 @@ cc_test(
         "tuner_test.cc",
     ],
     copts = ["-Werror", "-Wextra", "-Wno-missing-field-initializers"],
-    linkopts = if_android([
+    linkopts = ["-ldl"] + if_android([
         "-pie",
         "-lm",  # Required by unordered_map
     ]),

mace/utils/tuner_test.cc

@@ -33,6 +33,8 @@ TEST_F(TunerTest, SimpleRun) {
   int expect = 1;
   auto TunerFunc = [&](const std::vector<unsigned int> &params, Timer *timer,
                        std::vector<uint32_t> *tuning_result) -> int {
+    (void)(timer);
+    (void)(tuning_result);
     if (params.front() == 1) {
       return expect;
     } else {