These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-util/opencl-headers-2026.05.29::gentoo  USE="-test" 87 KiB
[ebuild  N     ] dev-libs/opencl-icd-loader-2026.05.29::gentoo  USE="-test" 113 KiB
[ebuild  N     ] virtual/opencl-3-r5::gentoo  0 KiB
[ebuild  N     ] dev-cpp/clhpp-2024.10.24::gentoo  130 KiB

Total: 4 packages (4 new), Size of downloads: 329 KiB