onnx-data.pb.h

This header provides the compatibility Version enum expected from the protobuf-generated ONNX C++ API.

Compatibility layer for the protobuf-generated onnx-data.pb.h header from ONNX.

The reference ONNX C++ distribution generates this header from onnx-data.proto and uses it as the canonical definition point for the Version enum. Some ONNX headers vendored into onnx-light still include onnx/onnx-data.pb.h unchanged.

onnx-light does not depend on protobuf code generation, so this header provides a minimal API-compatible replacement:

• it includes onnx/common/onnx_pb.h for shared ONNX C++ symbols;

• it defines the ONNX IR Version enum expected by downstream code.

Defines

ONNX_LIGHT_VERSION_ENUM_DEFINED

ONNX IR version constants mirrored from the ONNX protobuf schema.

IR_VERSION is the latest IR version supported by this build of onnx-light.

namespace onnx_light

Alias that makes onnx-light headers compatible with code that references ONNX_LIGHT_NAMESPACE (the macro used in the standard onnx package).

Set to ONNX_LIGHT_NAMESPACE so both names resolve to the same namespace.

Symbol-visibility attribute for the public onnx-light C++ API.

Defined as empty because onnx-light does not require explicit __declspec(dllexport) or __attribute__((visibility("default"))) annotations — visibility is controlled at the shared-library level. The macro is provided so that vendored ONNX headers that decorate their declarations with ONNX_API compile without modification.

Namespace alias so that ONNX C++ code (and consumers such as onnxruntime) that refers to the literal onnx namespace — rather than the ONNX_NAMESPACE macro — resolves to the onnx-light namespace. The standard onnx package lives in namespace onnx; onnx-light uses onnx_light (via ONNX_LIGHT_NAMESPACE), so this alias keeps onnx-light a true drop-in. It is only introduced when the onnx-light namespace differs from onnx.

Enums

enum Version

Values:

enumerator START_VERSION

enumerator IR_VERSION_2017_10_10

enumerator IR_VERSION_2017_10_30

enumerator IR_VERSION_2017_11_3

enumerator IR_VERSION_2019_1_22

enumerator IR_VERSION_2019_3_18

enumerator IR_VERSION_2019_9_19

enumerator IR_VERSION_2020_5_8

enumerator IR_VERSION_2021_7_30

enumerator IR_VERSION_2023_5_5

enumerator IR_VERSION_2024_3_25

enumerator IR_VERSION_2025_05_12

enumerator IR_VERSION_2025_08_26

enumerator IR_VERSION

enumerator START_VERSION

enumerator IR_VERSION_2017_10_10

enumerator IR_VERSION_2017_10_30

enumerator IR_VERSION_2017_11_3

enumerator IR_VERSION_2019_1_22

enumerator IR_VERSION_2019_3_18

enumerator IR_VERSION_2019_9_19

enumerator IR_VERSION_2020_5_8

enumerator IR_VERSION_2021_7_30

enumerator IR_VERSION_2023_5_5

enumerator IR_VERSION_2024_3_25

enumerator IR_VERSION_2025_05_12

enumerator IR_VERSION_2025_08_26

enumerator IR_VERSION