Add fetchcontent for google benchmark#381

Merged

nmm0 merged 1 commit intokokkos:stablefrom nmm0:fetchcontent-google-bench

Mar 3, 2025

+15-1

Commits on Feb 14, 2025

cmake: add a path to fetchcontent google benchmark. add flag MDSPAN_USE_SYSTEM_BENCHMARK defaulted to On (to preserve previous behavior) to use a system-provided library instead
nmm0
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