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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/crypto++-8.9.0:0/8.9.0::gentoo  USE="asm openmp -static-libs -verify-sig" 9071 KiB

Total: 1 package (1 new), Size of downloads: 9071 KiB