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Kenmar Francisco
f7ad23157f
The Caffe importer removal (#28678) left behind the protoc-generated opencv-caffe.pb.{cc,h} and caffe_io.{cpp,hpp}. The generated files can only be compiled with an old libprotobuf and can no longer be regenerated since opencv-caffe.proto was deleted, so any build with PROTOBUF_UPDATE_FILES=ON or an external protobuf failed (#29291, #29419). - Move the generic ReadProto* helpers, the only remaining consumers of caffe_io (used by the TensorFlow importer), to src/protobuf_io.{hpp,cpp}; delete src/caffe and misc/caffe, and move glog_emulator.hpp to src/. - Guard the protobuf version check so it also works with newer protobuf where GOOGLE_PROTOBUF_VERSION is not defined. - Drop the unconditional opencv-onnx.pb.h include from cast2_layer.cpp, using the spec-fixed ONNX data type values instead, and update stale readNetFromONNX/readNetFromTensorflow stubs to the current signatures so WITH_PROTOBUF=OFF builds link again.