>>> Emerging : portage://net-misc/iperf-3.19.1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ download  portage://dev-libs/cJSON-1.7.19
             │           └─ file ─┤ 347.90 Kb  	 cJSON-1.7.19.tar.gz
             │ download  portage://net-misc/iperf-3.19.1
             │           └─ file ─┤ 682.08 Kb  	 iperf-3.19.1.tar.gz

 └─step  2─┤ install   portage://dev-libs/cJSON-1.7.19
             │           └─ conf ─┤ USE = "-test"

 └─step  3─┤ run       portage://dev-libs/cJSON-1.7.19

 └─step  4─┤ install   portage://net-misc/iperf-3.19.1
             │           └─ conf ─┤ USE = "-sctp"
             │                    │ SLOT = "3"

 └─step  5─┤ run     portage://net-misc/iperf-3.19.1

Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
       1.01 Mb to be downloaded.