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Ashay Rane 370d6ac9a2
build: find Protobuf using config mode search (#2900) 
This patch makes the Protobuf package mandatory in addition to forcing a
config mode search.  The (default) module mode search looks for the
CMake-provided FindProtobuf.cmake file, but this file does not list
Abseil as a dependency, causing linker issues like the one below:

```
ld: Undefined symbols:
  absl::lts_20230802::log_internal::LogMessageFatal::LogMessageFatal(char const*, int, std::__1::basic_string_view<char, std::__1::char_traits<char>>), referenced from:
      google::protobuf::RepeatedPtrField<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>::TypeHandler::Type const& google::protobuf::internal::RepeatedPtrFieldBase::Get<google::protobuf::RepeatedPtrField<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char>>>::TypeHandler>(int) const (.cold.1) in OnnxImporter.cpp.o
```

By forcing a config mode search, CMake looks for the file that is
installed as part of the protobuf package and which does contain the
Abseil dependency.  This workaround is also mentioned in a GitHub issue
for Protobuf:
https://github.com/protocolbuffers/protobuf/issues/12292#issuecomment-1529680040.
 		2024-02-12 17:31:41 -06:00
..
CMakeLists.txt build: find Protobuf using config mode search (#2900) 2024-02-12 17:31:41 -06:00
OnnxImporter.cpp [onnx] Add torch-mlir-import-onnx native port as an optional tool/library. (#2694) 2023-12-27 12:13:34 -08:00
OnnxImporter.h [onnx] Add torch-mlir-import-onnx native port as an optional tool/library. (#2694) 2023-12-27 12:13:34 -08:00
README.md [onnx] Add torch-mlir-import-onnx native port as an optional tool/library. (#2694) 2023-12-27 12:13:34 -08:00
import-onnx-main.cpp [onnx] Add torch-mlir-import-onnx native port as an optional tool/library. (#2694) 2023-12-27 12:13:34 -08:00

README.md

ONNX C Importer

This project provides a C implementation of the onnx_importer.py, which is the canonical source. It is provided as sample code for anyone who wishes to integrate it into their system. By design, it only depends on the ONNX API and the MLIR C API via the mlir-c headers. As such, it should be easy to build into any system that already has those things by adding the sources.