Remove CUDA_STATIC_RUNTIME option

[bdice]

Description

Remove the CUDA_STATIC_RUNTIME CMake option from libcudf. All libcudf targets already force static cudart with rapids_cuda_set_runtime(... USE_STATIC ON), so retaining the option is misleading.

Part of rapidsai/build-planning#235.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

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ℹ️ Recent review info

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Run ID: 7c5218d4-022f-498c-9b15-736c19a90b10

📥 Commits

Reviewing files that changed from the base of the PR and between 5139e7d and 7ef8539.

📒 Files selected for processing (1)

• cpp/CMakeLists.txt

💤 Files with no reviewable changes (1)

• cpp/CMakeLists.txt

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📝 Walkthrough

Summary by CodeRabbit

• Build Configuration
  • Simplified CUDA linking configuration.
  • NVRTC and nvJitLink now use static linking without the previous runtime selection option.

Walkthrough

Changes

CUDA runtime option cleanup

Layer / File(s)	Summary
CMake static-link settings cpp/CMakeLists.txt	Removes the CUDA_STATIC_RUNTIME option and its assignments. The configuration retains static-link settings for NVRTC and nvJitLink.

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

Merge Risk: ⚪ Minimal · up to 7ef85

This removes a misleading CMake option without changing libcudf’s existing static CUDA runtime behavior. No actionable merge-blocking risk remains beyond normal checks and review.

Suggested reviewers: kylefromnvidia

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title clearly and concisely identifies the removal of the CUDA_STATIC_RUNTIME option, which is the main change.
Description check	✅ Passed	The description directly explains why the CUDA_STATIC_RUNTIME option is removed and relates to the changeset.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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