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This patch extends tensorflow.patch with changes to support:
1. Abseil backward compatibility:
- Add absl_base_prefetch.h compatibility shim for older Abseil
versions that lack absl/base/prefetch.h
- Update prefetch includes across TensorFlow/TSL to use the shim
- Add inline implementation of NullTerminatedMessage for older
Abseil versions without StatusMessageAsCStr
2. Protobuf 4.x support:
- Refactor cc_proto_library to use native proto_library and
cc_proto_library rules instead of custom proto_gen
- Implement custom _tsl_py_proto_library_rule to replace the
built-in py_proto_library removed in Protobuf 4.x
- Update proto library generation to depend on generated
cc_proto_library targets
3. Build cleanup:
- Remove unused absl/strings:string_view dependency
- Update BUILD files to reflect new dependency structure
These changes enable building struct2tensor with older Abseil versions
while supporting Protobuf 4.x, improving compatibility across different
dependency versions.
Remove vendored google/protobuf/any.proto and obsolete third_party/README.md
Upgrade `struct2tensor` to Protobuf 4.25.6 with compatibility patches
Testing to Testing1
Prefix cc_binary and cc_library with native. in struct2tensor.bzl
Apply rules_cc patch before adding struct2tensor local repository to ensure proper Bazel configuration.
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