As a maintainer of math/dune-grid, could you have a look at PR #252648:
In short, TBB version 2021 will soon be available as devel/onetbb but the port you maintain does not build correctly with it, see the following Poudriere run:
and error logs:
-- Performing Test TBB_COMPILE_TEST
-- Performing Test TBB_COMPILE_TEST - Failed
-- Could NOT find TBB (missing: TBB_INCLUDE_DIRS TBB_COMPILE_TEST)
That error does not seem to prevent the port from building (and being linked to new tbb), but tbb support may not be functional.
Could you try to provide a patch (important: *by replying to this PR*) to facilitate the migration to devel/onetbb ?
To help you modifying your port, expected patches to devel/tbb and devel/onetbb are available in PR #252648.
Thanks for your contribution,
All math/dune-* ports need to be updated first. I'll do this over the weekend.
math/dune-grid now builds with oneTBB.