cmake: switch python linker flags to target_link_options

[fallintoplace]

Why

_compiled_module set LINK_FLAGS three times in set_target_properties, which means earlier values can be overwritten and final exported flags may miss required linker options.

What changed

• Replace repeated LINK_FLAGS assignments with a single target_link_options(_compiled_module PRIVATE ...) call.
• Preserve LINK_WHAT_YOU_USE in its existing set_target_properties(...) call.

Verification

cmake configure/build in this environment is blocked by missing CUDA (nvcc not found).

Please validate with:

cmake -S . -B build-link-check -G Ninja \\\n  -DCUDNN_FRONTEND_BUILD_PYTHON_BINDINGS=ON \\\n  -DCUDNN_FRONTEND_BUILD_TESTS=OFF \\\n  -DCUDNN_FRONTEND_BUILD_SAMPLES=OFF
cmake --build build-link-check --target _compiled_module --verbose

Confirm the verbose link line contains all three flags:

• -Wl,--no-as-needed
• -Wl,--enable-new-dtags
• -Wl,-rpath,\x27$ORIGIN\x27,-rpath,\x27$ORIGIN/../lib\x27,-rpath,\x27$ORIGIN/../nvidia/cudnn/lib\x27

Summary by CodeRabbit

• Chores
  • Updated the Python build configuration to use a more standard linker options setup.
  • Preserved existing build behavior while improving how linker settings are applied during module compilation.

[coderabbitai]

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ℹ️ Recent review info

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Run ID: 1334ec11-b245-4a23-bb63-d2a08e79baa0

📥 Commits

Reviewing files that changed from the base of the PR and between 52119ee and 448c810.

📒 Files selected for processing (1)

• python/CMakeLists.txt

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📝 Walkthrough

Walkthrough

This change modifies python/CMakeLists.txt to move linker flag configuration for the _compiled_module target from the LINK_FLAGS property in set_target_properties to a dedicated target_link_options call, preserving the same flag values.

Changes

CMake linker configuration

Layer / File(s)	Summary
Migrate linker flags to target_link_options python/CMakeLists.txt	--no-as-needed, --enable-new-dtags, and $ORIGIN-based rpath flags are moved from the LINK_FLAGS property in set_target_properties to a new target_link_options(_compiled_module PRIVATE ...) block.

Estimated code review effort: 1 (Trivial) | ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: moving Python linker flags to target_link_options in CMake.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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