Opt dep cleanup

[teseoch]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.50%. Comparing base (22f6767) to head (5691597).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #100   +/-   ##
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  Coverage   80.50%   80.50%           
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  Files          49       49           
  Lines        2119     2119           
  Branches      283      283           
=======================================
  Hits         1706     1706           
  Misses        413      413           

Flag	Coverage Δ
polysolve	80.50% <ø> (ø)

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[Copilot]

Pull request overview

This PR refactors PolySolve’s CMake dependency handling so that optional solver backends are enabled only when their corresponding CMake targets are actually available/linkable, and adds CI “contract” checks to keep that behavior stable across platforms.

Changes:

• Introduces a new polysolve_optional_dependency CMake helper module and applies it across multiple dependency recipes to probe system availability and gracefully disable missing optional solvers.
• Adjusts platform/architecture handling (e.g., MKL defaults on ARM) and tightens “only link/define when target exists” logic in the top-level CMakeLists.txt.
• Adds a new optional-dependency contract-test CMake project and a GitHub Actions workflow to validate target/definition behavior under different dependency-availability scenarios.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
CMakeLists.txt	Centralizes optional-solver enablement around target existence, adds ARM detection and MKL default logic, and wires in the new optional-dependency helper.
tests/CMakeLists.txt	Renames the unit test executable target and updates link/test discovery wiring accordingly.
tests/cmake/optional_dependencies/CMakeLists.txt	New “contract test” CMake project that validates optional solver targets/definitions match expectations.
cmake/polysolve/polysolve_optional_dependency.cmake	New helper module to find system deps, decide whether to fetch, and run compile/link probes.
cmake/recipes/accelerate.cmake	New recipe for Apple Accelerate with linkability probing and graceful disable behavior.
cmake/recipes/mkl.cmake	Adds internal MKL target + probe gating, ARM/platform guards, and more graceful failure paths.
cmake/recipes/onetbb.cmake	Adds system-probe-first behavior and fetch gating for oneTBB (required for MKL TBB threading).
cmake/recipes/blas.cmake	Switches BLAS discovery to QUIET mode and makes BLAS optional (warn instead of hard fail).
cmake/recipes/lapack.cmake	Switches LAPACK discovery to QUIET mode and makes LAPACK optional (warn instead of hard fail).
cmake/recipes/suitesparse.cmake	Adds system probe logic and makes SuiteSparse failures non-fatal, disabling solvers instead.
cmake/recipes/superlu.cmake	Makes SuperLU discovery quiet, adds linkability probe, and only exposes alias after success.
cmake/recipes/spqr.cmake	Fixes target name check and adds system probing for SuiteSparse/SPQR.
cmake/recipes/pardiso.cmake	Makes Pardiso discovery quiet, adds LAPACK check + linkability probe, and only exposes alias after success.
cmake/recipes/hypre.cmake	Adds system-probe-first behavior and fetch gating (disable if missing and fetch disabled).
cmake/recipes/amgcl.cmake	Adds system-probe-first behavior and fetch gating (disable if missing and fetch disabled).
cmake/recipes/spectra.cmake	Adds system-probe-first behavior and fetch gating (disable if missing and fetch disabled).
cmake/recipes/boost.cmake	Adds system probing (including Boost::headers aliasing) before fetching.
cmake/recipes/eigen.cmake	Adds system probe path and consolidates Eigen target configuration in a helper function.
cmake/recipes/spdlog.cmake	Adds system probing before fetching; keeps spdlog required and hard-fails if unavailable.
cmake/recipes/json.cmake	Adds system probing before fetching; keeps JSON required and hard-fails if unavailable.
cmake/recipes/LBFGSpp.cmake	Fixes target naming and adds system probing before fetching; keeps LBFGSpp required.
cmake/find/FindSuperLU.cmake	Switches compile checks to C++ source compiles for version probing.
cmake/find/FindPardiso.cmake	Adjusts package handle naming to Pardiso (aligning found-variable naming).
.github/workflows/optional-dependencies.yml	New CI workflow to validate optional dependency contract scenarios across OSes.
.github/workflows/coverage.yml	Simplifies the coverage matrix/caching by removing the unused threading dimension.

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