Remove fatbin linker script from libcuvs builds

[robertmaynard]

Verified that both Debug and RelWithDebInfo builds with CMAKE_CUDA_ARCHITECTURES=RAPIDS work as expected without the .nvFatBinSegment/.nv_fatbin placement script.

This will make it easier to support different linkers with RAPIDS in the future.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Repository: NVIDIA/cuvs/.coderabbit.yaml
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📥 Commits

Reviewing files that changed from the base of the PR and between 60451af and a4f50fc.

📒 Files selected for processing: 1

• cpp/CMakeLists.txt

💤 Files with no reviewable changes: 1

• cpp/CMakeLists.txt

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📝 Summary

Summary by CodeRabbit

• Build
  • Shared-library builds no longer generate or use an additional linker script during linking. Static-library builds retain their existing linker configuration. This update changes build behavior only; no public interfaces or end-user application features are affected. The existing linker configuration for static libraries is unchanged, and no new functionality or changes to the user experience are included.

The CMake configuration no longer generates fatbin.ld or passes it as a host-link option for the shared cuvs target. The static target’s link option remains unchanged.

Changes: Shared Target Linking

Layer / File(s)	Summary
Shared target linker option cpp/CMakeLists.txt	Removes fatbin.ld generation and the host-link option for the shared cuvs target. The static target’s separate link option remains.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~5 minutes

Change: Refactor

Suggested reviewers: bdice

Merge Risk: ⚪ Minimal · up to a4f50

This change removes a linker script from shared libcuvs builds so other linkers are easier to support later. No concrete merge-blocking risk was identified.

Pre-merge checks: 5

Check name	Status	Explanation
Title check		The title clearly and concisely describes the main change: removing the fatbin linker script from libcuvs builds.
Description check		The description directly relates to the changeset. It reports successful Debug and RelWithDebInfo builds and explains the benefit of removing the placement script.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files.

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