As a maintainer of science/madness, 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:
CMake Error at cmake/modules/FindTBB.cmake:103 (file):
file failed to open for reading (No such file or directory):
Call Stack (most recent call first):
-- Could NOT find TBB: Found unsuitable version ".", but required is at least "4.3.5" (found /usr/local/lib/libtbb.so, )
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,
Made TBB optional and OFF by default.
A commit references this bug:
Date: Fri Jan 15 18:36:00 UTC 2021
New revision: 561663
science/madness: Make TBB dependency optional, OFF by default until the upstream fixes oneTBB support