[Build] croos compile

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#32,064 opened on Aug 13, 2026 1 comment 1 reaction 0 assignees View on GitHub

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build stale

Dominant language: C++
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Forks: 4.2k
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Merged PRs (30d): 184

Description

### Describe the issue

error compile openwrt glibc

### Urgency

_No response_

### Target platform

openwrt

### Build script

CMAKE_OPTIONS += \
-DONNX_BUILD_PYTHON=ON \
-Donnxruntime_BUILD_SHARED_LIB=ON \
-Donnxruntime_BUILD_UNIT_TESTS=OFF \
-Donnxruntime_ENABLE_PYTHON=ON

### Error / output

flatbuffers_utils.cc:203:34: error: unused variable 'dim' [-Werror=unused-variable]

error: ignoring return value of 'bool google::protobuf::MessageLite::SerializeToOstream(std::ostream*) const', declared with attribute 'nodiscard'

### Visual Studio Version

_No response_

### GCC / Compiler Version

gcc 14.3.0
protobuf 35.1
onnxruntime 1.29.0

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Research direction

Start with the reported OpenWrt glibc cross-compilation configuration in the issue and inspect flatbuffers_utils.cc around line 203. Reproduce the build using GCC 14.3.0, protobuf 35.1, and ONNX Runtime 1.29.0, then determine whether the unused-variable and ignored-return-value errors can be addressed without breaking the configured build; done means the build completes successfully.

Written by the indexing model from the issue text.

Assessment

Tech stack: cmake, cpp
Domain: build-system
Issue type: Bug
Difficulty: 4/5
Estimated time: 3-5 days
Activity status: Active
Clarity: Needs clarification
Newbie friendliness: 38/100