Build fixes for TensorFlow 2.13.0

WORKSPACE

@@ -37,7 +37,7 @@ load("@org_tensorflow//tensorflow:workspace0.bzl", "tf_workspace0")
 tf_workspace0()
 
 load("@coral_crosstool//:configure.bzl", "cc_crosstool")
-cc_crosstool(name = "crosstool", cpp_version = "c++14")
+cc_crosstool(name = "crosstool", cpp_version = "c++17")
 
 # External Dependencies
 http_archive(

coral/detection/adapter.cc

@@ -78,11 +78,12 @@ std::vector<Object> GetDetectionResults(const tflite::Interpreter& interpreter,
   // If a model has signature, we use the signature output tensor names to parse
   // the results. Otherwise, we parse the results based on some assumption of
   // the output tensor order and size.
-  if (!interpreter.signature_def_names().empty()) {
-    CHECK_EQ(interpreter.signature_def_names().size(), 1);
-    VLOG(1) << "Signature name: " << *interpreter.signature_def_names()[0];
+  const auto interpreter_signature_keys = interpreter.signature_keys();
+  if (!interpreter_signature_keys.empty()) {
+    CHECK_EQ(interpreter_signature_keys.size(), 1);
+    VLOG(1) << "Signature name: " << *interpreter_signature_keys[0];
     const auto& signature_output_map = interpreter.signature_outputs(
-        interpreter.signature_def_names()[0]->c_str());
+        interpreter_signature_keys[0]->c_str());
     CHECK_EQ(signature_output_map.size(), 4);
     count = TensorData<float>(
         *interpreter.tensor(signature_output_map.at("output_0")));

coral/tflite_utils.cc

@@ -28,17 +28,6 @@ limitations under the License.
 
 namespace coral {
 namespace {
-TfLiteFloatArray* TfLiteFloatArrayCopy(const TfLiteFloatArray* src) {
-  if (!src) return nullptr;
-
-  auto* copy = static_cast<TfLiteFloatArray*>(
-      malloc(TfLiteFloatArrayGetSizeInBytes(src->size)));
-  CHECK(copy);
-  copy->size = src->size;
-  std::memcpy(copy->data, src->data, src->size * sizeof(float));
-  return copy;
-}
-
 TfLiteAffineQuantization* TfLiteAffineQuantizationCopy(
     const TfLiteAffineQuantization* src) {
   if (!src) return nullptr;