sudo emerge @preserved-rebuild
'
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These are the packages that would be merged, in order:

Calculating dependencies                       ... done! 
[ebuild   R    ] dev-util/intel-ocl-sdk-4.4.0.117-r3::gentoo  USE="system-boost system-tbb -android" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB

>>> Verifying ebuild manifests
>>> Emerging (1 of 1) dev-util/intel-ocl-sdk-4.4.0.117-r3::gentoo
>>> Installing (1 of 1) dev-util/intel-ocl-sdk-4.4.0.117-r3::gentoo
>>> Jobs: 1 of 1 complete                           Load avg: 1.19, 1.01, 0.94
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.

 * GNU info directory index is up-to-date.

!!! existing preserved libs:
>>> package: dev-cpp/tbb-2021.5.0-r1
 *  - /usr/lib64/libtbb.so.2
 *      used by /opt/intel/opencl-1.2-4.4.0.117/lib64/libtask_executor.so (dev-util/intel-ocl-sdk-4.4.0.117-r3)
Use emerge @preserved-rebuild to rebuild packages using these libraries

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 * IMPORTANT: 12 news items need reading for repository 'gentoo'.
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