Add bazel build opt to support multiple model for mace_run.

mace/examples/mace_run.cc

@@ -21,7 +21,7 @@ using namespace std;
 using namespace mace;
 
 namespace mace {
-extern NetDef CreateGCN512();
+extern NetDef MACE_MODEL_FUNCTION();
 }
 void ParseShape(const string &str, vector<index_t> *shape) {
   string tmp = str;
@@ -95,7 +95,7 @@ int main(int argc, char **argv) {
 //  NetDef net_def;
 //  net_def.ParseFromIstream(&file_stream);
 //  file_stream.close();
-  NetDef net_def = mace::CreateGCN512();
+  NetDef net_def = mace::MACE_MODEL_FUNCTION();
 
   DeviceType device_type = ParseDeviceType(device);
   VLOG(0) << device_type;

tools/validate_gcn.sh

@@ -46,10 +46,12 @@ bazel-bin/mace/python/tools/tf_converter --input=${TF_MODEL_FILE_PATH} \
 
 # Step 3: Run model on the phone
 echo "Step 3: Run model on the phone"
+echo Create${MODEL_TAG}
 bazel build -c opt --strip always mace/examples:mace_run \
     --crosstool_top=//external:android/crosstool \
     --host_crosstool_top=@bazel_tools//tools/cpp:toolchain \
-    --cpu=arm64-v8a
+    --cpu=arm64-v8a \
+    --copt=-DMACE_MODEL_FUNCTION=Create${MODEL_TAG}
 
 adb shell "mkdir -p ${PHONE_DATA_DIR}"
 adb shell "mkdir -p ${KERNEL_DIR}"