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Exclude ONNX docstrings in WebAssembly build #27370

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Merged
fs-eire merged 1 commit into from
Feb 18, 2026
Merged

Exclude ONNX docstrings in WebAssembly build #27370

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10 changes: 10 additions & 0 deletions tools/python/util/vcpkg_helpers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,16 @@ def add_port_configs(
)"""
)

# When building ONNX for WebAssembly, we disable doc strings to reduce the binary size. The ONNX doc strings are
# only used for error messages and are not critical for end users. Disabling them can significantly reduce the
# binary size, which is important for WebAssembly targets.
if is_emscripten:
f.write(
r"""
string(APPEND VCPKG_C_FLAGS " -D__ONNX_NO_DOC_STRINGS")
string(APPEND VCPKG_CXX_FLAGS " -D__ONNX_NO_DOC_STRINGS")"""
)

f.write(r"""
endif() # End ONNX-specific block
""")
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